diff --git a/Makefile b/Makefile
index 37bfd2e..e9601e2 100644
--- a/Makefile
+++ b/Makefile
@@ -46,7 +46,6 @@ tools:
 build:
 	(cd userland && $(MAKE) build)
 	(cd man && $(MAKE) install-staging)
-	(cd testscripts && $(MAKE) build)
 
 includes tags depend:
 	(cd kern && $(MAKE) $@)
diff --git a/configure b/configure
index ae861a1..0e3586b 100755
--- a/configure
+++ b/configure
@@ -134,7 +134,6 @@ else
     HOST_CFLAGS="${HOST_CFLAGS} -DDECLARE_NTOHLL"
 fi
 
-
 ####################
 
 # Now generate defs.mk.
diff --git a/kern/arch/mips/vm/dumbvm.c b/kern/arch/mips/vm/dumbvm.c
index cf9d916..1b2e6cd 100644
--- a/kern/arch/mips/vm/dumbvm.c
+++ b/kern/arch/mips/vm/dumbvm.c
@@ -126,6 +126,21 @@ free_kpages(vaddr_t addr)
 	(void)addr;
 }
 
+unsigned
+int
+coremap_used_bytes() {
+
+	/* dumbvm doesn't track page allocations. Return 0 so that khu works. */
+
+	return 0;
+}
+
+void
+vm_tlbshootdown_all(void)
+{
+	panic("dumbvm tried to do tlb shootdown?!\n");
+}
+
 void
 vm_tlbshootdown(const struct tlbshootdown *ts)
 {
diff --git a/kern/conf/DUMBVM b/kern/conf/DUMBVM
index 7862c64..3216e1f 100644
--- a/kern/conf/DUMBVM
+++ b/kern/conf/DUMBVM
@@ -30,3 +30,4 @@ options sfs			# Always use the file system
 #options netfs			# You might write this as a project.
 
 options dumbvm			# Chewing gum and baling wire.
+#options synchprobs # Uncomment to enable ASST1 synchronization problems
diff --git a/kern/conf/conf.kern b/kern/conf/conf.kern
index 48ed457..5e5f927 100644
--- a/kern/conf/conf.kern
+++ b/kern/conf/conf.kern
@@ -309,6 +309,14 @@ file      ../common/libc/string/strlen.c
 file      ../common/libc/string/strrchr.c
 file      ../common/libc/string/strtok_r.c
 
+#
+# libtest161 shared code and security functions
+#
+
+file      ../common/libtest161/test161.c
+file      ../common/libtest161/secure.c
+file      ../common/libtest161/sha256.c
+
 ########################################
 #                                      #
 #       Core kernel source files       #
@@ -434,7 +442,19 @@ file		test/threadlisttest.c
 file		test/threadtest.c
 file		test/tt3.c
 file		test/synchtest.c
+file		test/rwtest.c
 file		test/semunit.c
+file		test/hmacunit.c
 file		test/kmalloctest.c
 file		test/fstest.c
+file		test/lib.c
+
 optfile net	test/nettest.c
+
+defoption synchprobs
+optfile   synchprobs  synchprobs/whalemating.c
+optfile   synchprobs  synchprobs/stoplight.c
+optfile   synchprobs  test/synchprobs.c
+
+defoption automationtest
+optfile automationtest	test/automationtest.c
diff --git a/kern/conf/config b/kern/conf/config
index 01bca35..ddbb50a 100755
--- a/kern/conf/config
+++ b/kern/conf/config
@@ -206,7 +206,7 @@ echo "$CONFNAME" $CONFTMP | awk '
 #
 
 if [ ! -d "$COMPILEDIR" ]; then
-    mkdir $COMPILEDIR
+    mkdir -p $COMPILEDIR
 fi
 
 echo -n 'Generating files...'
diff --git a/kern/include/cpu.h b/kern/include/cpu.h
index cd386ec..787c6cf 100644
--- a/kern/include/cpu.h
+++ b/kern/include/cpu.h
@@ -35,6 +35,7 @@
 #include <threadlist.h>
 #include <machine/vm.h>  /* for TLBSHOOTDOWN_MAX */
 
+extern unsigned num_cpus;
 
 /*
  * Per-cpu structure
@@ -74,21 +75,24 @@ struct cpu {
 	 * Accessed by other cpus.
 	 * Protected by the IPI lock.
 	 *
-	 * TLB shootdown requests made to this CPU are queued in
-	 * c_shootdown[], with c_numshootdown holding the number of
-	 * requests. TLBSHOOTDOWN_MAX is the maximum number that can
-	 * be queued at once, which is machine-dependent.
+	 * If c_numshootdown is -1 (TLBSHOOTDOWN_ALL), all mappings
+	 * should be invalidated. This is used if more than
+	 * TLBSHOOTDOWN_MAX mappings are going to be invalidated at
+	 * once. TLBSHOOTDOWN_MAX is MD and chosen based on when it
+	 * becomes more efficient just to flush the whole TLB.
 	 *
-	 * The contents of struct tlbshootdown are also machine-
-	 * dependent and might reasonably be either an address space
-	 * and vaddr pair, or a paddr, or something else.
+	 * struct tlbshootdown is machine-dependent and might
+	 * reasonably be either an address space and vaddr pair, or a
+	 * paddr, or something else.
 	 */
 	uint32_t c_ipi_pending;		/* One bit for each IPI number */
 	struct tlbshootdown c_shootdown[TLBSHOOTDOWN_MAX];
-	unsigned c_numshootdown;
+	int c_numshootdown;
 	struct spinlock c_ipi_lock;
 };
 
+#define TLBSHOOTDOWN_ALL  (-1)
+
 /*
  * Initialization functions.
  *
diff --git a/kern/include/lib.h b/kern/include/lib.h
index 7478ce6..5374a96 100644
--- a/kern/include/lib.h
+++ b/kern/include/lib.h
@@ -129,6 +129,8 @@ uint32_t random(void);
 void *kmalloc(size_t size);
 void kfree(void *ptr);
 void kheap_printstats(void);
+void kheap_printused(void);
+unsigned long kheap_getused(void);
 void kheap_nextgeneration(void);
 void kheap_dump(void);
 void kheap_dumpall(void);
diff --git a/kern/include/synch.h b/kern/include/synch.h
index fee3b07..59058d0 100644
--- a/kern/include/synch.h
+++ b/kern/include/synch.h
@@ -44,10 +44,10 @@
  * internally.
  */
 struct semaphore {
-        char *sem_name;
+	char *sem_name;
 	struct wchan *sem_wchan;
 	struct spinlock sem_lock;
-        volatile unsigned sem_count;
+	volatile unsigned sem_count;
 };
 
 struct semaphore *sem_create(const char *name, unsigned initial_count);
@@ -137,5 +137,40 @@ void cv_wait(struct cv *cv, struct lock *lock);
 void cv_signal(struct cv *cv, struct lock *lock);
 void cv_broadcast(struct cv *cv, struct lock *lock);
 
+/*
+ * Reader-writer locks.
+ *
+ * When the lock is created, no thread should be holding it. Likewise,
+ * when the lock is destroyed, no thread should be holding it.
+ *
+ * The name field is for easier debugging. A copy of the name is
+ * (should be) made internally.
+ */
+
+struct rwlock {
+        char *rwlock_name;
+        // add what you need here
+        // (don't forget to mark things volatile as needed)
+};
+
+struct rwlock * rwlock_create(const char *);
+void rwlock_destroy(struct rwlock *);
+
+/*
+ * Operations:
+ *    rwlock_acquire_read  - Get the lock for reading. Multiple threads can
+ *                          hold the lock for reading at the same time.
+ *    rwlock_release_read  - Free the lock. 
+ *    rwlock_acquire_write - Get the lock for writing. Only one thread can
+ *                           hold the write lock at one time.
+ *    rwlock_release_write - Free the write lock.
+ *
+ * These operations must be atomic. You get to write them.
+ */
+
+void rwlock_acquire_read(struct rwlock *);
+void rwlock_release_read(struct rwlock *);
+void rwlock_acquire_write(struct rwlock *);
+void rwlock_release_write(struct rwlock *);
 
 #endif /* _SYNCH_H_ */
diff --git a/kern/include/test.h b/kern/include/test.h
index 7b02114..9445a5c 100644
--- a/kern/include/test.h
+++ b/kern/include/test.h
@@ -30,6 +30,13 @@
 #ifndef _TEST_H_
 #define _TEST_H_
 
+/* Get __PF() for declaring printf-like functions. */
+#include <cdefs.h>
+#include <kern/secret.h>
+
+#include "opt-synchprobs.h"
+#include "opt-automationtest.h"
+
 /*
  * Declarations for test code and other miscellaneous high-level
  * functions.
@@ -52,8 +59,18 @@ int threadtest2(int, char **);
 int threadtest3(int, char **);
 int semtest(int, char **);
 int locktest(int, char **);
+int locktest2(int, char **);
+int locktest3(int, char **);
 int cvtest(int, char **);
 int cvtest2(int, char **);
+int cvtest3(int, char **);
+int cvtest4(int, char **);
+int cvtest5(int, char **);
+int rwtest(int, char **);
+int rwtest2(int, char **);
+int rwtest3(int, char **);
+int rwtest4(int, char **);
+int rwtest5(int, char **);
 
 /* semaphore unit tests */
 int semu1(int, char **);
@@ -88,11 +105,15 @@ int longstress(int, char **);
 int createstress(int, char **);
 int printfile(int, char **);
 
+/* HMAC/hash tests */
+int hmacu1(int, char**);
+
 /* other tests */
 int kmalloctest(int, char **);
 int kmallocstress(int, char **);
 int kmalloctest3(int, char **);
 int kmalloctest4(int, char **);
+int kmalloctest5(int, char **);
 int nettest(int, char **);
 
 /* Routine for running a user-level program. */
@@ -104,5 +125,75 @@ void menu(char *argstr);
 /* The main function, called from start.S. */
 void kmain(char *bootstring);
 
+#if OPT_SYNCHPROBS
+
+/*
+ * Synchronization driver primitives.
+ */
+
+void male_start(uint32_t);
+void male_end(uint32_t);
+void female_start(uint32_t);
+void female_end(uint32_t);
+void matchmaker_start(uint32_t);
+void matchmaker_end(uint32_t);
+int whalemating(int, char **);
+
+void inQuadrant(int, uint32_t);
+void leaveIntersection(uint32_t);
+int stoplight(int, char **);
+
+/*
+ * Synchronization problem primitives.
+ */
+
+/*
+ * whalemating.c.
+ */
+
+void whalemating_init(void);
+void whalemating_cleanup(void);
+void male(uint32_t);
+void female(uint32_t);
+void matchmaker(uint32_t);
+ 
+/*
+ * stoplight.c.
+ */
+
+void gostraight(uint32_t, uint32_t);
+void turnleft(uint32_t, uint32_t);
+void turnright(uint32_t, uint32_t);
+void stoplight_init(void);
+void stoplight_cleanup(void);
+
+#endif
+
+/*
+ * Automation tests for detecting kernel deadlocks and livelocks.
+ */
+
+#if OPT_AUTOMATIONTEST
+int dltest(int, char **);
+int ll1test(int, char **);
+int ll16test(int, char **);
+#endif
+
+void random_yielder(uint32_t);
+void random_spinner(uint32_t);
+
+/*
+ * kprintf variants that do not (or only) print during automated testing.
+ */
+
+#ifdef SECRET_TESTING
+#define kprintf_t(...) kprintf(__VA_ARGS__)
+#define kprintf_n(...) silent(__VA_ARGS__)
+#else
+#define kprintf_t(...) silent(__VA_ARGS__)
+#define kprintf_n(...) kprintf(__VA_ARGS__)
+#endif
+
+static inline void silent(const char * fmt, ...) { (void)fmt; };
 
 #endif /* _TEST_H_ */
diff --git a/kern/include/thread.h b/kern/include/thread.h
index 48ca76d..04a46d3 100644
--- a/kern/include/thread.h
+++ b/kern/include/thread.h
@@ -48,6 +48,7 @@ struct cpu;
 
 /* Size of kernel stacks; must be power of 2 */
 #define STACK_SIZE 4096
+#define MAX_NAME_LENGTH 64
 
 /* Mask for extracting the stack base address of a kernel stack pointer */
 #define STACK_MASK  (~(vaddr_t)(STACK_SIZE-1))
@@ -70,7 +71,16 @@ struct thread {
 	 * These go up front so they're easy to get to even if the
 	 * debugger is messed up.
 	 */
-	char *t_name;			/* Name of this thread */
+
+	/*
+	 * Name of this thread. Used to be dynamically allocated using kmalloc, but
+	 * this can cause small changes in the amount of available memory due to the
+	 * fact that it was cleaned up in exorcise. This produces more predictable
+	 * behavior at the cost of a small amount of memory overhead and the
+	 * inability to give threads huge names.
+	 */
+
+	char t_name[MAX_NAME_LENGTH];
 	const char *t_wchan_name;	/* Name of wait channel, if sleeping */
 	threadstate_t t_state;		/* State this thread is in */
 
@@ -168,5 +178,7 @@ void schedule(void);
  */
 void thread_consider_migration(void);
 
+extern unsigned thread_count;
+void thread_wait_for_count(unsigned);
 
 #endif /* _THREAD_H_ */
diff --git a/kern/include/version.h b/kern/include/version.h
index 43f66be..532d7ec 100644
--- a/kern/include/version.h
+++ b/kern/include/version.h
@@ -34,7 +34,7 @@
  * Leave this alone, so we can tell what version of the OS/161 base
  * code we gave you.
  */
-#define BASE_VERSION    "2.0.2"
+#define BASE_VERSION    "2.0.1"
 
 /*
  * Change this as you see fit in the course of hacking the system.
diff --git a/kern/include/vfs.h b/kern/include/vfs.h
index b4a6cc3..77b0dc7 100644
--- a/kern/include/vfs.h
+++ b/kern/include/vfs.h
@@ -156,13 +156,6 @@ int vfs_getcwd(struct uio *buf);
  *    vfs_unmount   - Unmount the filesystem presently mounted on the
  *                    specified device.
  *
- *    vfs_swapon    - Look up DEVNAME and mark it as a swap device,
- *                    returning a vnode. Similar to vfs_mount.
- *
- *    vfs_swapoff   - Unmark DEVNAME as a swap device. The vnode
- *                    previously returned by vfs_swapon should be
- *                    decref'd first. Similar to vfs_unmount.
- *
  *    vfs_unmountall - Unmount all mounted filesystems.
  */
 
@@ -179,8 +172,6 @@ int vfs_mount(const char *devname, void *data,
 			       struct device *dev,
 			       struct fs **result));
 int vfs_unmount(const char *devname);
-int vfs_swapon(const char *devname, struct vnode **result);
-int vfs_swapoff(const char *devname);
 int vfs_unmountall(void);
 
 /*
diff --git a/kern/include/vm.h b/kern/include/vm.h
index abc0cfe..a783f33 100644
--- a/kern/include/vm.h
+++ b/kern/include/vm.h
@@ -55,7 +55,15 @@ int vm_fault(int faulttype, vaddr_t faultaddress);
 vaddr_t alloc_kpages(unsigned npages);
 void free_kpages(vaddr_t addr);
 
+/*
+ * Return amount of memory (in bytes) used by allocated coremap pages.  If
+ * there are ongoing allocations, this value could change after it is returned
+ * to the caller. But it should have been correct at some point in time.
+ */
+unsigned int coremap_used_bytes(void);
+
 /* TLB shootdown handling called from interprocessor_interrupt */
+void vm_tlbshootdown_all(void);
 void vm_tlbshootdown(const struct tlbshootdown *);
 
 
diff --git a/kern/lib/kprintf.c b/kern/lib/kprintf.c
index 3adc7a3..2b04bbc 100644
--- a/kern/lib/kprintf.c
+++ b/kern/lib/kprintf.c
@@ -39,6 +39,8 @@
 #include <mainbus.h>
 #include <vfs.h>          // for vfs_sync()
 #include <lamebus/ltrace.h> // for ltrace_stop()
+#include <kern/secret.h>
+#include <test.h>
 
 
 /* Flags word for DEBUG() macro. */
@@ -90,13 +92,14 @@ console_send(void *junk, const char *data, size_t len)
 }
 
 /*
- * Printf to the console.
+ * kprintf and tprintf helper function.
  */
+static
+inline
 int
-kprintf(const char *fmt, ...)
+__kprintf(const char *fmt, va_list ap)
 {
 	int chars;
-	va_list ap;
 	bool dolock;
 
 	dolock = kprintf_lock != NULL
@@ -111,9 +114,7 @@ kprintf(const char *fmt, ...)
 		spinlock_acquire(&kprintf_spinlock);
 	}
 
-	va_start(ap, fmt);
 	chars = __vprintf(console_send, NULL, fmt, ap);
-	va_end(ap);
 
 	if (dolock) {
 		lock_release(kprintf_lock);
@@ -125,6 +126,22 @@ kprintf(const char *fmt, ...)
 	return chars;
 }
 
+/*
+ * Printf to the console.
+ */
+int
+kprintf(const char *fmt, ...)
+{
+	int chars;
+	va_list ap;
+
+	va_start(ap, fmt);
+	chars = __kprintf(fmt, ap);
+	va_end(ap);
+
+	return chars;
+}
+
 /*
  * panic() is for fatal errors. It prints the printf arguments it's
  * passed and then halts the system.
diff --git a/kern/main/main.c b/kern/main/main.c
index d095480..715ef99 100644
--- a/kern/main/main.c
+++ b/kern/main/main.c
@@ -48,6 +48,7 @@
 #include <device.h>
 #include <syscall.h>
 #include <test.h>
+#include <kern/test161.h>
 #include <version.h>
 #include "autoconf.h"  // for pseudoconfig
 
@@ -127,6 +128,7 @@ boot(void)
 	vm_bootstrap();
 	kprintf_bootstrap();
 	thread_start_cpus();
+	test161_bootstrap();
 
 	/* Default bootfs - but ignore failure, in case emu0 doesn't exist */
 	vfs_setbootfs("emu0");
diff --git a/kern/main/menu.c b/kern/main/menu.c
index 8905f09..2451b13 100644
--- a/kern/main/menu.c
+++ b/kern/main/menu.c
@@ -41,8 +41,11 @@
 #include <sfs.h>
 #include <syscall.h>
 #include <test.h>
+#include <prompt.h>
 #include "opt-sfs.h"
 #include "opt-net.h"
+#include "opt-synchprobs.h"
+#include "opt-automationtest.h"
 
 /*
  * In-kernel menu and command dispatcher.
@@ -114,6 +117,7 @@ common_prog(int nargs, char **args)
 {
 	struct proc *proc;
 	int result;
+	unsigned tc;
 
 	/* Create a process for the new program to run in. */
 	proc = proc_create_runprogram(args[0] /* name */);
@@ -121,6 +125,8 @@ common_prog(int nargs, char **args)
 		return ENOMEM;
 	}
 
+	tc = thread_count;
+
 	result = thread_fork(args[0] /* thread name */,
 			proc /* new process */,
 			cmd_progthread /* thread function */,
@@ -136,6 +142,10 @@ common_prog(int nargs, char **args)
 	 * once you write the code for handling that.
 	 */
 
+	// Wait for all threads to finish cleanup, otherwise khu be a bit behind,
+	// especially once swapping is enabled.
+	thread_wait_for_count(tc);
+
 	return 0;
 }
 
@@ -373,6 +383,18 @@ cmd_kheapstats(int nargs, char **args)
 	return 0;
 }
 
+static
+int
+cmd_kheapused(int nargs, char **args)
+{
+	(void)nargs;
+	(void)args;
+
+	kheap_printused();
+
+	return 0;
+}
+
 static
 int
 cmd_kheapgeneration(int nargs, char **args)
@@ -466,16 +488,31 @@ static const char *testmenu[] = {
 	"[km2] kmalloc stress test           ",
 	"[km3] Large kmalloc test            ",
 	"[km4] Multipage kmalloc test        ",
+	"[km5] kmalloc coremap alloc test    ",
 	"[tt1] Thread test 1                 ",
 	"[tt2] Thread test 2                 ",
 	"[tt3] Thread test 3                 ",
 #if OPT_NET
 	"[net] Network test                  ",
 #endif
-	"[sy1] Semaphore test                ",
-	"[sy2] Lock test             (1)     ",
-	"[sy3] CV test               (1)     ",
-	"[sy4] CV test #2            (1)     ",
+	"[sem1] Semaphore test               ",
+	"[lt1]  Lock test 1           (1)    ",
+	"[lt2]  Lock test 2           (1*)   ",
+	"[lt3]  Lock test 3           (1*)   ",
+	"[cvt1] CV test 1             (1)    ",
+	"[cvt2] CV test 2             (1)    ",
+	"[cvt3] CV test 3             (1*)   ",
+	"[cvt4] CV test 4             (1*)   ",
+	"[cvt5] CV test 5             (1)    ",
+	"[rwt1] RW lock test          (1?)   ",
+	"[rwt2] RW lock test 2        (1?)   ",
+	"[rwt3] RW lock test 3        (1?)   ",
+	"[rwt4] RW lock test 4        (1?)   ",
+	"[rwt5] RW lock test 5        (1?)   ",
+#if OPT_SYNCHPROBS
+	"[sp1] Whalemating test       (1)    ",
+	"[sp2] Stoplight test         (1)    ",
+#endif
 	"[semu1-22] Semaphore unit tests     ",
 	"[fs1] Filesystem test               ",
 	"[fs2] FS read stress                ",
@@ -483,6 +520,7 @@ static const char *testmenu[] = {
 	"[fs4] FS write stress 2             ",
 	"[fs5] FS long stress                ",
 	"[fs6] FS create stress              ",
+	"[hm1] HMAC unit test                ",
 	NULL
 };
 
@@ -496,15 +534,41 @@ cmd_testmenu(int n, char **a)
 	showmenu("OS/161 tests menu", testmenu);
 	kprintf("    (1) These tests will fail until you finish the "
 		"synch assignment.\n");
+	kprintf("    (*) These tests will panic on success.\n");
+	kprintf("    (?) These tests are left to you to implement.\n");
 	kprintf("\n");
 
 	return 0;
 }
 
+#if OPT_AUTOMATIONTEST
+static const char *automationmenu[] = {
+	"[dl]   Deadlock test (*)             ",
+	"[ll1]  Livelock test (1 thread)      ",
+	"[ll16] Livelock test (16 threads)     ",
+	NULL
+};
+
+static
+int
+cmd_automationmenu(int n, char **a)
+{
+	(void)n;
+	(void)a;
+
+	showmenu("OS/161 automation tests menu", automationmenu);
+	kprintf("    (*) These tests require locks.\n");
+	kprintf("\n");
+
+	return 0;
+}
+#endif
+
 static const char *mainmenu[] = {
 	"[?o] Operations menu                ",
 	"[?t] Tests menu                     ",
 	"[kh] Kernel heap stats              ",
+	"[khu] Kernel heap usage             ",
 	"[khgen] Next kernel heap generation ",
 	"[khdump] Dump kernel heap           ",
 	"[q] Quit and shut down              ",
@@ -536,6 +600,9 @@ static struct {
 	{ "help",	cmd_mainmenu },
 	{ "?o",		cmd_opsmenu },
 	{ "?t",		cmd_testmenu },
+#if OPT_AUTOMATIONTEST
+	{ "?a",		cmd_automationmenu },
+#endif
 
 	/* operations */
 	{ "s",		cmd_shell },
@@ -554,6 +621,7 @@ static struct {
 
 	/* stats */
 	{ "kh",         cmd_kheapstats },
+	{ "khu",        cmd_kheapused },
 	{ "khgen",      cmd_kheapgeneration },
 	{ "khdump",     cmd_kheapdump },
 
@@ -566,18 +634,33 @@ static struct {
 	{ "km2",	kmallocstress },
 	{ "km3",	kmalloctest3 },
 	{ "km4",	kmalloctest4 },
+	{ "km5",	kmalloctest5 },
 #if OPT_NET
 	{ "net",	nettest },
 #endif
 	{ "tt1",	threadtest },
 	{ "tt2",	threadtest2 },
 	{ "tt3",	threadtest3 },
-	{ "sy1",	semtest },
 
 	/* synchronization assignment tests */
-	{ "sy2",	locktest },
-	{ "sy3",	cvtest },
-	{ "sy4",	cvtest2 },
+	{ "sem1",	semtest },
+	{ "lt1",	locktest },
+	{ "lt2",	locktest2 },
+	{ "lt3",	locktest3 },
+	{ "cvt1",	cvtest },
+	{ "cvt2",	cvtest2 },
+	{ "cvt3",	cvtest3 },
+	{ "cvt4",	cvtest4 },
+	{ "cvt5",	cvtest5 },
+	{ "rwt1",	rwtest },
+	{ "rwt2",	rwtest2 },
+	{ "rwt3",	rwtest3 },
+	{ "rwt4",	rwtest4 },
+	{ "rwt5",	rwtest5 },
+#if OPT_SYNCHPROBS
+	{ "sp1",	whalemating },
+	{ "sp2",	stoplight },
+#endif
 
 	/* semaphore unit tests */
 	{ "semu1",	semu1 },
@@ -611,6 +694,16 @@ static struct {
 	{ "fs5",	longstress },
 	{ "fs6",	createstress },
 
+	/* HMAC unit tests */
+	{ "hm1",	hmacu1 },
+
+#if OPT_AUTOMATIONTEST
+	/* automation tests */
+	{ "dl",	dltest },
+	{ "ll1",	ll1test },
+	{ "ll16",	ll16test },
+#endif
+
 	{ NULL, NULL }
 };
 
@@ -724,7 +817,11 @@ menu(char *args)
 	menu_execute(args, 1);
 
 	while (1) {
-		kprintf("OS/161 kernel [? for menu]: ");
+		/*
+		 * Defined in overwrite.h. If you want to change the kernel prompt, please
+		 * do it in that file. Otherwise automated test testing will break.
+		 */
+		kprintf(KERNEL_PROMPT);
 		kgets(buf, sizeof(buf));
 		menu_execute(buf, 0);
 	}
diff --git a/kern/test/kmalloctest.c b/kern/test/kmalloctest.c
index 6abb39c..60517fc 100644
--- a/kern/test/kmalloctest.c
+++ b/kern/test/kmalloctest.c
@@ -33,13 +33,19 @@
 #include <types.h>
 #include <kern/errno.h>
 #include <lib.h>
+#include <cpu.h>
 #include <thread.h>
 #include <synch.h>
 #include <vm.h> /* for PAGE_SIZE */
 #include <test.h>
+#include <kern/test161.h>
+#include <mainbus.h>
 
 #include "opt-dumbvm.h"
 
+// from arch/mips/vm/ram.c
+extern vaddr_t firstfree;
+
 ////////////////////////////////////////////////////////////
 // km1/km2
 
@@ -58,6 +64,12 @@
 #define ITEMSIZE  997
 #define NTHREADS  8
 
+#define PROGRESS(iter) do { \
+	if ((iter % 100) == 0) { \
+		kprintf("."); \
+	} \
+} while (0)
+
 static
 void
 kmallocthread(void *sm, unsigned long num)
@@ -69,15 +81,16 @@ kmallocthread(void *sm, unsigned long num)
 	int i;
 
 	for (i=0; i<NTRIES; i++) {
+		PROGRESS(i);
 		ptr = kmalloc(ITEMSIZE);
 		if (ptr==NULL) {
 			if (sem) {
 				kprintf("thread %lu: kmalloc returned NULL\n",
 					num);
-				goto done;
+				panic("kmalloc test failed");
 			}
 			kprintf("kmalloc returned null; test failed.\n");
-			goto done;
+			panic("kmalloc test failed");
 		}
 		if (oldptr2) {
 			kfree(oldptr2);
@@ -85,7 +98,7 @@ kmallocthread(void *sm, unsigned long num)
 		oldptr2 = oldptr;
 		oldptr = ptr;
 	}
-done:
+
 	if (oldptr2) {
 		kfree(oldptr2);
 	}
@@ -105,7 +118,8 @@ kmalloctest(int nargs, char **args)
 
 	kprintf("Starting kmalloc test...\n");
 	kmallocthread(NULL, 0);
-	kprintf("kmalloc test done\n");
+	kprintf("\n");
+	success(TEST161_SUCCESS, SECRET, "km1");
 
 	return 0;
 }
@@ -140,7 +154,8 @@ kmallocstress(int nargs, char **args)
 	}
 
 	sem_destroy(sem);
-	kprintf("kmalloc stress test done\n");
+	kprintf("\n");
+	success(TEST161_SUCCESS, SECRET, "km2");
 
 	return 0;
 }
@@ -252,6 +267,7 @@ kmalloctest3(int nargs, char **args)
 	curpos = 0;
 	cursizeindex = 0;
 	for (i=0; i<numptrs; i++) {
+		PROGRESS(i);
 		cursize = sizes[cursizeindex];
 		ptr = ptrblocks[curblock][curpos];
 		KASSERT(ptr != NULL);
@@ -282,13 +298,15 @@ kmalloctest3(int nargs, char **args)
 
 	/* Free the lower tier. */
 	for (i=0; i<numptrblocks; i++) {
+		PROGRESS(i);
 		KASSERT(ptrblocks[i] != NULL);
 		kfree(ptrblocks[i]);
 	}
 	/* Free the upper tier. */
 	kfree(ptrblocks);
 
-	kprintf("kmalloctest3: passed\n");
+	kprintf("\n");
+	success(TEST161_SUCCESS, SECRET, "km3");
 	return 0;
 }
 
@@ -300,20 +318,24 @@ void
 kmalloctest4thread(void *sm, unsigned long num)
 {
 #define NUM_KM4_SIZES 5
+#define ITERATIONS 50
 	static const unsigned sizes[NUM_KM4_SIZES] = { 1, 3, 5, 2, 4 };
 
 	struct semaphore *sem = sm;
 	void *ptrs[NUM_KM4_SIZES];
 	unsigned p, q;
-	unsigned i;
+	unsigned i, j, k;
+	uint32_t magic;
 
 	for (i=0; i<NUM_KM4_SIZES; i++) {
 		ptrs[i] = NULL;
 	}
 	p = 0;
 	q = NUM_KM4_SIZES / 2;
+	magic = random();
 
 	for (i=0; i<NTRIES; i++) {
+		PROGRESS(i);
 		if (ptrs[q] != NULL) {
 			kfree(ptrs[q]);
 			ptrs[q] = NULL;
@@ -324,6 +346,24 @@ kmalloctest4thread(void *sm, unsigned long num)
 			      "allocating %u pages failed\n",
 			      num, sizes[p]);
 		}
+
+		// Write to each page of the allocated memory and make sure nothing
+		// overwrites it.
+		for (k = 0; k < sizes[p]; k++) {
+			*((uint32_t *)ptrs[p] + k*PAGE_SIZE/sizeof(uint32_t)) = magic;
+		}
+
+		for (j = 0; j < ITERATIONS; j++) {
+			random_yielder(4);
+			for (k = 0; k < sizes[p]; k++) {
+				uint32_t actual = *((uint32_t *)ptrs[p] + k*PAGE_SIZE/sizeof(uint32_t));
+				if (actual != magic) {
+					panic("km4: expected %u got %u. Your VM is broken!",
+						magic, actual);
+				}
+			}
+		}
+		magic++;
 		p = (p + 1) % NUM_KM4_SIZES;
 		q = (q + 1) % NUM_KM4_SIZES;
 	}
@@ -375,6 +415,193 @@ kmalloctest4(int nargs, char **args)
 	}
 
 	sem_destroy(sem);
-	kprintf("Multipage kmalloc test done\n");
+
+	kprintf("\n");
+	success(TEST161_SUCCESS, SECRET, "km4");
+	return 0;
+}
+
+static inline
+void
+km5_usage()
+{
+	kprintf("usage: km5 [--avail <num_pages>] [--kernel <num_pages>]\n");
+}
+
+/*
+ * Allocate and free all physical memory a number of times. Along the we, we
+ * check coremap_used_bytes to make sure it's reporting the number we're
+ * expecting.
+ */
+int
+kmalloctest5(int nargs, char **args)
+{
+#define KM5_ITERATIONS 5
+
+	// We're expecting an even number of arguments, less arg[0].
+	if (nargs > 5 || (nargs % 2) == 0) {
+		km5_usage();
+		return 0;
+	}
+
+	unsigned avail_page_slack = 0, kernel_page_limit = 0;
+	int arg = 1;
+
+	while (arg < nargs) {
+		if (strcmp(args[arg], "--avail") == 0) {
+			arg++;
+			avail_page_slack = atoi(args[arg++]);
+		} else if (strcmp(args[arg], "--kernel") == 0) {
+			arg++;
+			kernel_page_limit = atoi(args[arg++]);
+		} else {
+			km5_usage();
+			return 0;
+		}
+	}
+
+#if OPT_DUMBVM
+	kprintf("(This test will not work with dumbvm)\n");
+#endif
+
+	// First, we need to figure out how much memory we're running with and how
+	// much space it will take up if we maintain a pointer to each allocated
+	// page. We do something similar to km3 - for 32 bit systems with
+	// PAGE_SIZE == 4096, we can store 1024 pointers on a page. We keep an array
+	// of page size blocks of pointers which in total can hold enough pointers
+	// for each page of available physical memory.
+	unsigned orig_used, ptrs_per_page, num_ptr_blocks, max_pages;
+	unsigned total_ram, avail_ram, magic, orig_magic, known_pages;
+
+	ptrs_per_page = PAGE_SIZE / sizeof(void *);
+	total_ram = mainbus_ramsize();
+	avail_ram = total_ram - (uint32_t)(firstfree - MIPS_KSEG0);
+	max_pages = (avail_ram + PAGE_SIZE-1) / PAGE_SIZE;
+	num_ptr_blocks = (max_pages + ptrs_per_page-1) / ptrs_per_page;
+
+	// The array can go on the stack, we won't have that many
+	// (sys161 16M max => 4 blocks)
+	void **ptrs[num_ptr_blocks];
+
+	for (unsigned i = 0; i < num_ptr_blocks; i++) {
+		ptrs[i] = kmalloc(PAGE_SIZE);
+		if (ptrs[i] == NULL) {
+			panic("Can't allocate ptr page!");
+		}
+		bzero(ptrs[i], PAGE_SIZE);
+	}
+
+	kprintf("km5 --> phys ram: %uk avail ram: %uk  (%u pages) ptr blocks: %u\n", total_ram/1024,
+		avail_ram/1024, max_pages, num_ptr_blocks);
+
+	// Initially, there must be at least 1 page allocated for each thread stack,
+	// one page for kmalloc for this thread struct, plus what we just allocated).
+	// This probably isn't the GLB, but its a decent lower bound.
+	orig_used = coremap_used_bytes();
+	known_pages = num_cpus + num_ptr_blocks + 1;
+	if (orig_used < known_pages * PAGE_SIZE) {
+		panic ("Not enough pages initially allocated");
+	}
+	if ((orig_used % PAGE_SIZE) != 0) {
+		panic("Coremap used bytes should be a multiple of PAGE_SIZE");
+	}
+
+	// Test for kernel bloat.
+	if (kernel_page_limit > 0) {
+		uint32_t kpages = (total_ram - avail_ram + PAGE_SIZE) / PAGE_SIZE;
+		if (kpages > kernel_page_limit) {
+			panic("You're kernel is bloated! Max allowed pages: %d, used pages: %d",
+				kernel_page_limit, kpages);
+		}
+	}
+
+	orig_magic = magic = random();
+
+	for (int i = 0; i < KM5_ITERATIONS; i++) {
+		// Step 1: allocate all physical memory, with checks along the way
+		unsigned int block, pos, oom, pages, used, prev;
+		void *page;
+
+		block = pos = oom = pages = used = 0;
+		prev = orig_used;
+
+		while (pages < max_pages+1) {
+			PROGRESS(pages);
+			page = kmalloc(PAGE_SIZE);
+			if (page == NULL) {
+				oom = 1;
+				break;
+			}
+
+			// Make sure we can write to the page
+			*(uint32_t *)page = magic++;
+
+			// Make sure the number of used bytes is going up, and by increments of PAGE_SIZE
+			used = coremap_used_bytes();
+			if (used != prev + PAGE_SIZE) {
+				panic("Allocation not equal to PAGE_SIZE. prev: %u used: %u", prev, used);
+			}
+			prev = used;
+
+			ptrs[block][pos] = page;
+			pos++;
+			if (pos >= ptrs_per_page) {
+				pos = 0;
+				block++;
+			}
+			pages++;
+		}
+
+		// Step 2: Check that we were able to allocate a reasonable number of pages
+		unsigned expected;
+		if (avail_page_slack > 0 ) {
+			// max avail pages + what we can prove we allocated + some slack
+			expected = max_pages - (known_pages + avail_page_slack);
+		} else {
+			// At the very least, just so we know things are working.
+			expected = 3;
+		}
+
+		if (pages < expected) {
+			panic("Expected to allocate at least %d pages, only allocated %d",
+				expected, pages);
+		}
+
+		// We tried to allocate 1 more page than is available in physical memory. That
+		// should fail unless you're swapping out kernel pages, which you should
+		// probably not be doing.
+		if (!oom) {
+			panic("Allocated more pages than physical memory. Are you swapping kernel pages?");
+		}
+
+		// Step 3: free everything and check that we're back to where we started
+		for (block = 0; block < num_ptr_blocks; block++) {
+			for (pos = 0; pos < ptrs_per_page; pos++) {
+				if (ptrs[block][pos] != NULL) {
+					// Make sure we got unique addresses
+					if ((*(uint32_t *)ptrs[block][pos]) != orig_magic++) {
+						panic("km5: expected %u got %u - your VM is broken!",
+							orig_magic-1, (*(uint32_t *)ptrs[block][pos]));
+					}
+					kfree(ptrs[block][pos]);
+				}
+			}
+		}
+
+		// Check that we're back to where we started
+		used = coremap_used_bytes();
+		if (used != orig_used) {
+			panic("orig (%u) != used (%u)", orig_used, used);
+		}
+	}
+
+	//Clean up the pointer blocks
+	for (unsigned i = 0; i < num_ptr_blocks; i++) {
+		kfree(ptrs[i]);
+	}
+
+	kprintf("\n");
+	success(TEST161_SUCCESS, SECRET, "km5");
+
 	return 0;
 }
diff --git a/kern/test/synchtest.c b/kern/test/synchtest.c
index c5582e2..23bb151 100644
--- a/kern/test/synchtest.c
+++ b/kern/test/synchtest.c
@@ -29,6 +29,9 @@
 
 /*
  * Synchronization test code.
+ *
+ * All the contents of this file are overwritten during automated
+ * testing. Please consider this before changing anything in this file.
  */
 
 #include <types.h>
@@ -37,185 +40,303 @@
 #include <thread.h>
 #include <synch.h>
 #include <test.h>
+#include <kern/test161.h>
+#include <spinlock.h>
 
+#define CREATELOOPS		8
 #define NSEMLOOPS     63
 #define NLOCKLOOPS    120
 #define NCVLOOPS      5
 #define NTHREADS      32
+#define SYNCHTEST_YIELDER_MAX 16
 
 static volatile unsigned long testval1;
 static volatile unsigned long testval2;
 static volatile unsigned long testval3;
-static struct semaphore *testsem;
-static struct lock *testlock;
-static struct cv *testcv;
-static struct semaphore *donesem;
+static volatile int32_t testval4;
+
+static struct semaphore *testsem = NULL;
+static struct semaphore *testsem2 = NULL;
+static struct lock *testlock = NULL;
+static struct lock *testlock2 = NULL;
+static struct cv *testcv = NULL;
+static struct semaphore *donesem = NULL;
+
+struct spinlock status_lock;
+static bool test_status = TEST161_FAIL;
+
+static unsigned long semtest_current;
 
 static
-void
-inititems(void)
-{
-	if (testsem==NULL) {
-		testsem = sem_create("testsem", 2);
-		if (testsem == NULL) {
-			panic("synchtest: sem_create failed\n");
-		}
-	}
-	if (testlock==NULL) {
-		testlock = lock_create("testlock");
-		if (testlock == NULL) {
-			panic("synchtest: lock_create failed\n");
-		}
-	}
-	if (testcv==NULL) {
-		testcv = cv_create("testlock");
-		if (testcv == NULL) {
-			panic("synchtest: cv_create failed\n");
-		}
-	}
-	if (donesem==NULL) {
-		donesem = sem_create("donesem", 0);
-		if (donesem == NULL) {
-			panic("synchtest: sem_create failed\n");
-		}
+bool
+failif(bool condition) {
+	if (condition) {
+		spinlock_acquire(&status_lock);
+		test_status = TEST161_FAIL;
+		spinlock_release(&status_lock);
 	}
+	return condition;
 }
 
 static
 void
 semtestthread(void *junk, unsigned long num)
 {
-	int i;
 	(void)junk;
 
+	int i;
+
+	random_yielder(4);
+
 	/*
 	 * Only one of these should print at a time.
 	 */
 	P(testsem);
-	kprintf("Thread %2lu: ", num);
+	semtest_current = num;
+
+	kprintf_n("Thread %2lu: ", num);
 	for (i=0; i<NSEMLOOPS; i++) {
-		kprintf("%c", (int)num+64);
+		kprintf_t(".");
+		kprintf_n("%2lu", num);
+		random_yielder(4);
+		failif((semtest_current != num));
 	}
-	kprintf("\n");
+	kprintf_n("\n");
+
 	V(donesem);
 }
 
 int
 semtest(int nargs, char **args)
 {
-	int i, result;
-
 	(void)nargs;
 	(void)args;
 
-	inititems();
-	kprintf("Starting semaphore test...\n");
-	kprintf("If this hangs, it's broken: ");
+	int i, result;
+
+	kprintf_n("Starting sem1...\n");
+	for (i=0; i<CREATELOOPS; i++) {
+		kprintf_t(".");
+		testsem = sem_create("testsem", 2);
+		if (testsem == NULL) {
+			panic("sem1: sem_create failed\n");
+		}
+		donesem = sem_create("donesem", 0);
+		if (donesem == NULL) {
+			panic("sem1: sem_create failed\n");
+		}
+		if (i != CREATELOOPS - 1) {
+			sem_destroy(testsem);
+			sem_destroy(donesem);
+		}
+	}
+	spinlock_init(&status_lock);
+	test_status = TEST161_SUCCESS;
+
+	kprintf_n("If this hangs, it's broken: ");
 	P(testsem);
 	P(testsem);
-	kprintf("ok\n");
+	kprintf_n("OK\n");
+	kprintf_t(".");
 
 	for (i=0; i<NTHREADS; i++) {
+		kprintf_t(".");
 		result = thread_fork("semtest", NULL, semtestthread, NULL, i);
 		if (result) {
-			panic("semtest: thread_fork failed: %s\n",
+			panic("sem1: thread_fork failed: %s\n",
 			      strerror(result));
 		}
 	}
-
 	for (i=0; i<NTHREADS; i++) {
+		kprintf_t(".");
 		V(testsem);
 		P(donesem);
 	}
 
-	/* so we can run it again */
-	V(testsem);
-	V(testsem);
+	sem_destroy(testsem);
+	sem_destroy(donesem);
+	testsem = donesem = NULL;
+
+	kprintf_t("\n");
+	success(test_status, SECRET, "sem1");
 
-	kprintf("Semaphore test done.\n");
 	return 0;
 }
 
-static
-void
-fail(unsigned long num, const char *msg)
-{
-	kprintf("thread %lu: Mismatch on %s\n", num, msg);
-	kprintf("Test failed\n");
-
-	lock_release(testlock);
-
-	V(donesem);
-	thread_exit();
-}
-
 static
 void
 locktestthread(void *junk, unsigned long num)
 {
-	int i;
 	(void)junk;
 
+	int i;
+
 	for (i=0; i<NLOCKLOOPS; i++) {
+		kprintf_t(".");
 		lock_acquire(testlock);
+		random_yielder(4);
+
 		testval1 = num;
 		testval2 = num*num;
 		testval3 = num%3;
 
 		if (testval2 != testval1*testval1) {
-			fail(num, "testval2/testval1");
+			goto fail;
 		}
+		random_yielder(4);
 
 		if (testval2%3 != (testval3*testval3)%3) {
-			fail(num, "testval2/testval3");
+			goto fail;
 		}
+		random_yielder(4);
 
 		if (testval3 != testval1%3) {
-			fail(num, "testval3/testval1");
+			goto fail;
 		}
+		random_yielder(4);
 
 		if (testval1 != num) {
-			fail(num, "testval1/num");
+			goto fail;
 		}
+		random_yielder(4);
 
 		if (testval2 != num*num) {
-			fail(num, "testval2/num");
+			goto fail;
 		}
+		random_yielder(4);
 
 		if (testval3 != num%3) {
-			fail(num, "testval3/num");
+			goto fail;
 		}
+		random_yielder(4);
+
+		if (!(lock_do_i_hold(testlock))) {
+			goto fail;
+		}
+		random_yielder(4);
 
 		lock_release(testlock);
 	}
+
+	/* Check for solutions that don't track ownership properly */
+
+	for (i=0; i<NLOCKLOOPS; i++) {
+		kprintf_t(".");
+		if (lock_do_i_hold(testlock)) {
+			goto fail2;
+		}
+	}
+
 	V(donesem);
+	return;
+
+fail:
+	lock_release(testlock);
+fail2:
+	failif(true);
+	V(donesem);
+	return;
 }
 
 
 int
 locktest(int nargs, char **args)
 {
-	int i, result;
-
 	(void)nargs;
 	(void)args;
 
-	inititems();
-	kprintf("Starting lock test...\n");
+	int i, result;
+
+	kprintf_n("Starting lt1...\n");
+	for (i=0; i<CREATELOOPS; i++) {
+		kprintf_t(".");
+		testlock = lock_create("testlock");
+		if (testlock == NULL) {
+			panic("lt1: lock_create failed\n");
+		}
+		donesem = sem_create("donesem", 0);
+		if (donesem == NULL) {
+			panic("lt1: sem_create failed\n");
+		}
+		if (i != CREATELOOPS - 1) {
+			lock_destroy(testlock);
+			sem_destroy(donesem);
+		}
+	}
+	spinlock_init(&status_lock);
+	test_status = TEST161_SUCCESS;
 
 	for (i=0; i<NTHREADS; i++) {
-		result = thread_fork("synchtest", NULL, locktestthread,
-				     NULL, i);
+		kprintf_t(".");
+		result = thread_fork("synchtest", NULL, locktestthread, NULL, i);
 		if (result) {
-			panic("locktest: thread_fork failed: %s\n",
-			      strerror(result));
+			panic("lt1: thread_fork failed: %s\n", strerror(result));
 		}
 	}
 	for (i=0; i<NTHREADS; i++) {
+		kprintf_t(".");
 		P(donesem);
 	}
 
-	kprintf("Lock test done.\n");
+	lock_destroy(testlock);
+	sem_destroy(donesem);
+	testlock = NULL;
+	donesem = NULL;
+
+	kprintf_t("\n");
+	success(test_status, SECRET, "lt1");
+
+	return 0;
+}
+
+int
+locktest2(int nargs, char **args) {
+	(void)nargs;
+	(void)args;
+
+	kprintf_n("Starting lt2...\n");
+	kprintf_n("(This test panics on success!)\n");
+
+	testlock = lock_create("testlock");
+	if (testlock == NULL) {
+		panic("lt2: lock_create failed\n");
+	}
+
+	secprintf(SECRET, "Should panic...", "lt2");
+	lock_release(testlock);
+
+	/* Should not get here on success. */
+
+	success(TEST161_FAIL, SECRET, "lt2");
+
+	lock_destroy(testlock);
+	testlock = NULL;
+
+	return 0;
+}
+
+int
+locktest3(int nargs, char **args) {
+	(void)nargs;
+	(void)args;
+
+	kprintf_n("Starting lt3...\n");
+	kprintf_n("(This test panics on success!)\n");
+
+	testlock = lock_create("testlock");
+	if (testlock == NULL) {
+		panic("lt3: lock_create failed\n");
+	}
+
+	secprintf(SECRET, "Should panic...", "lt3");
+	lock_acquire(testlock);
+	lock_destroy(testlock);
+
+	/* Should not get here on success. */
+
+	success(TEST161_FAIL, SECRET, "lt3");
+
+	testlock = NULL;
 
 	return 0;
 }
@@ -224,35 +345,38 @@ static
 void
 cvtestthread(void *junk, unsigned long num)
 {
+	(void)junk;
+
 	int i;
 	volatile int j;
 	struct timespec ts1, ts2;
 
-	(void)junk;
-
 	for (i=0; i<NCVLOOPS; i++) {
+		kprintf_t(".");
 		lock_acquire(testlock);
 		while (testval1 != num) {
+			testval2 = 0;
+			random_yielder(4);
 			gettime(&ts1);
 			cv_wait(testcv, testlock);
 			gettime(&ts2);
+			random_yielder(4);
 
 			/* ts2 -= ts1 */
 			timespec_sub(&ts2, &ts1, &ts2);
 
 			/* Require at least 2000 cpu cycles (we're 25mhz) */
 			if (ts2.tv_sec == 0 && ts2.tv_nsec < 40*2000) {
-				kprintf("cv_wait took only %u ns\n",
-					ts2.tv_nsec);
-				kprintf("That's too fast... you must be "
-					"busy-looping\n");
+				kprintf_n("cv_wait took only %u ns\n", ts2.tv_nsec);
+				kprintf_n("That's too fast... you must be busy-looping\n");
+				failif(true);
 				V(donesem);
 				thread_exit();
 			}
 
+			testval2 = 0xFFFFFFFF;
 		}
-		kprintf("Thread %lu\n", num);
-		testval1 = (testval1 + NTHREADS - 1)%NTHREADS;
+		testval2 = num;
 
 		/*
 		 * loop a little while to make sure we can measure the
@@ -260,7 +384,13 @@ cvtestthread(void *junk, unsigned long num)
 		 */
 		for (j=0; j<3000; j++);
 
+		random_yielder(4);
 		cv_broadcast(testcv, testlock);
+		random_yielder(4);
+		failif((testval1 != testval2));
+
+		kprintf_n("Thread %lu\n", testval2);
+		testval1 = (testval1 + NTHREADS - 1) % NTHREADS;
 		lock_release(testlock);
 	}
 	V(donesem);
@@ -269,30 +399,57 @@ cvtestthread(void *junk, unsigned long num)
 int
 cvtest(int nargs, char **args)
 {
-
-	int i, result;
-
 	(void)nargs;
 	(void)args;
 
-	inititems();
-	kprintf("Starting CV test...\n");
-	kprintf("Threads should print out in reverse order.\n");
+	int i, result;
+
+	kprintf_n("Starting cvt1...\n");
+	for (i=0; i<CREATELOOPS; i++) {
+		kprintf_t(".");
+		testlock = lock_create("testlock");
+		if (testlock == NULL) {
+			panic("cvt1: lock_create failed\n");
+		}
+		testcv = cv_create("testcv");
+		if (testcv == NULL) {
+			panic("cvt1: cv_create failed\n");
+		}
+		donesem = sem_create("donesem", 0);
+		if (donesem == NULL) {
+			panic("cvt1: sem_create failed\n");
+		}
+		if (i != CREATELOOPS - 1) {
+			lock_destroy(testlock);
+			cv_destroy(testcv);
+			sem_destroy(donesem);
+		}
+	}
+	spinlock_init(&status_lock);
+	test_status = TEST161_SUCCESS;
 
 	testval1 = NTHREADS-1;
-
 	for (i=0; i<NTHREADS; i++) {
-		result = thread_fork("synchtest", NULL, cvtestthread, NULL, i);
+		kprintf_t(".");
+		result = thread_fork("cvt1", NULL, cvtestthread, NULL, (long unsigned) i);
 		if (result) {
-			panic("cvtest: thread_fork failed: %s\n",
-			      strerror(result));
+			panic("cvt1: thread_fork failed: %s\n", strerror(result));
 		}
 	}
 	for (i=0; i<NTHREADS; i++) {
+		kprintf_t(".");
 		P(donesem);
 	}
 
-	kprintf("CV test done\n");
+	lock_destroy(testlock);
+	cv_destroy(testcv);
+	sem_destroy(donesem);
+	testlock = NULL;
+	testcv = NULL;
+	donesem = NULL;
+
+	kprintf_t("\n");
+	success(test_status, SECRET, "cvt1");
 
 	return 0;
 }
@@ -318,19 +475,28 @@ static
 void
 sleepthread(void *junk1, unsigned long junk2)
 {
-	unsigned i, j;
-
 	(void)junk1;
 	(void)junk2;
 
+	unsigned i, j;
+
+	random_yielder(4);
+
 	for (j=0; j<NLOOPS; j++) {
+		kprintf_t(".");
 		for (i=0; i<NCVS; i++) {
 			lock_acquire(testlocks[i]);
+			random_yielder(4);
 			V(gatesem);
+			random_yielder(4);
+			spinlock_acquire(&status_lock);
+			testval4++;
+			spinlock_release(&status_lock);
 			cv_wait(testcvs[i], testlocks[i]);
+			random_yielder(4);
 			lock_release(testlocks[i]);
 		}
-		kprintf("sleepthread: %u\n", j);
+		kprintf_n("sleepthread: %u\n", j);
 	}
 	V(exitsem);
 }
@@ -339,19 +505,28 @@ static
 void
 wakethread(void *junk1, unsigned long junk2)
 {
-	unsigned i, j;
-
 	(void)junk1;
 	(void)junk2;
 
+	unsigned i, j;
+
+	random_yielder(4);
+
 	for (j=0; j<NLOOPS; j++) {
+		kprintf_t(".");
 		for (i=0; i<NCVS; i++) {
+			random_yielder(4);
 			P(gatesem);
+			random_yielder(4);
 			lock_acquire(testlocks[i]);
+			random_yielder(4);
+			testval4--;
+			failif((testval4 != 0));
 			cv_signal(testcvs[i], testlocks[i]);
+			random_yielder(4);
 			lock_release(testlocks[i]);
 		}
-		kprintf("wakethread: %u\n", j);
+		kprintf_n("wakethread: %u\n", j);
 	}
 	V(exitsem);
 }
@@ -359,30 +534,44 @@ wakethread(void *junk1, unsigned long junk2)
 int
 cvtest2(int nargs, char **args)
 {
-	unsigned i;
-	int result;
-
 	(void)nargs;
 	(void)args;
 
+	unsigned i;
+	int result;
+
+	kprintf_n("Starting cvt2...\n");
+	for (i=0; i<CREATELOOPS; i++) {
+		kprintf_t(".");
+		gatesem = sem_create("gatesem", 0);
+		if (gatesem == NULL) {
+			panic("cvt2: sem_create failed\n");
+		}
+		exitsem = sem_create("exitsem", 0);
+		if (exitsem == NULL) {
+			panic("cvt2: sem_create failed\n");
+		}
+		if (i != CREATELOOPS - 1) {
+			sem_destroy(gatesem);
+			sem_destroy(exitsem);
+		}
+	}
 	for (i=0; i<NCVS; i++) {
+		kprintf_t(".");
 		testlocks[i] = lock_create("cvtest2 lock");
 		testcvs[i] = cv_create("cvtest2 cv");
 	}
-	gatesem = sem_create("gatesem", 0);
-	exitsem = sem_create("exitsem", 0);
+	spinlock_init(&status_lock);
+	test_status = TEST161_SUCCESS;
 
-	kprintf("cvtest2...\n");
-
-	result = thread_fork("cvtest2", NULL, sleepthread, NULL, 0);
+	result = thread_fork("cvt2", NULL, sleepthread, NULL, 0);
 	if (result) {
-		panic("cvtest2: thread_fork failed\n");
+		panic("cvt2: thread_fork failed\n");
 	}
-	result = thread_fork("cvtest2", NULL, wakethread, NULL, 0);
+	result = thread_fork("cvt2", NULL, wakethread, NULL, 0);
 	if (result) {
-		panic("cvtest2: thread_fork failed\n");
+		panic("cvt2: thread_fork failed\n");
 	}
-
 	P(exitsem);
 	P(exitsem);
 
@@ -390,12 +579,194 @@ cvtest2(int nargs, char **args)
 	sem_destroy(gatesem);
 	exitsem = gatesem = NULL;
 	for (i=0; i<NCVS; i++) {
+		kprintf_t(".");
 		lock_destroy(testlocks[i]);
 		cv_destroy(testcvs[i]);
 		testlocks[i] = NULL;
 		testcvs[i] = NULL;
 	}
 
-	kprintf("cvtest2 done\n");
+	kprintf_t("\n");
+	success(test_status, SECRET, "cvt2");
+
+	return 0;
+}
+
+int
+cvtest3(int nargs, char **args) {
+	(void)nargs;
+	(void)args;
+
+	kprintf_n("Starting cvt3...\n");
+	kprintf_n("(This test panics on success!)\n");
+
+	testlock = lock_create("testlock");
+	if (testlock == NULL) {
+		panic("cvt3: lock_create failed\n");
+	}
+	testcv = cv_create("testcv");
+	if (testcv == NULL) {
+		panic("cvt3: cv_create failed\n");
+	}
+
+	secprintf(SECRET, "Should panic...", "cvt3");
+	cv_wait(testcv, testlock);
+
+	/* Should not get here on success. */
+
+	success(TEST161_FAIL, SECRET, "cvt3");
+
+	lock_destroy(testlock);
+	cv_destroy(testcv);
+	testcv = NULL;
+	testlock = NULL;
+
+	return 0;
+}
+
+int
+cvtest4(int nargs, char **args) {
+	(void)nargs;
+	(void)args;
+
+	kprintf_n("Starting cvt4...\n");
+	kprintf_n("(This test panics on success!)\n");
+
+	testlock = lock_create("testlock");
+	if (testlock == NULL) {
+		panic("cvt4: lock_create failed\n");
+	}
+	testcv = cv_create("testcv");
+	if (testcv == NULL) {
+		panic("cvt4: cv_create failed\n");
+	}
+
+	secprintf(SECRET, "Should panic...", "cvt4");
+	cv_broadcast(testcv, testlock);
+
+	/* Should not get here on success. */
+
+	success(TEST161_FAIL, SECRET, "cvt4");
+
+	lock_destroy(testlock);
+	cv_destroy(testcv);
+	testcv = NULL;
+	testlock = NULL;
+
+	return 0;
+}
+
+static
+void
+sleeperthread(void *junk1, unsigned long junk2) {
+	(void)junk1;
+	(void)junk2;
+
+	random_yielder(4);
+	lock_acquire(testlock);
+	random_yielder(4);
+	failif((testval1 != 0));
+	testval1 = 1;
+	cv_signal(testcv, testlock);
+
+	random_yielder(4);
+	cv_wait(testcv, testlock);
+	failif((testval1 != 3));
+	testval1 = 4;
+	random_yielder(4);
+	lock_release(testlock);
+	random_yielder(4);
+
+	V(exitsem);
+}
+
+static
+void
+wakerthread(void *junk1, unsigned long junk2) {
+	(void)junk1;
+	(void)junk2;
+
+	random_yielder(4);
+	lock_acquire(testlock2);
+	failif((testval1 != 2));
+	testval1 = 3;
+
+	random_yielder(4);
+	cv_signal(testcv, testlock2);
+	random_yielder(4);
+	lock_release(testlock2);
+	random_yielder(4);
+
+	V(exitsem);
+}
+
+int
+cvtest5(int nargs, char **args) {
+	(void)nargs;
+	(void)args;
+
+	int result;
+
+	kprintf_n("Starting cvt5...\n");
+
+	testlock = lock_create("testlock");
+	if (testlock == NULL) {
+		panic("cvt5: lock_create failed\n");
+	}
+	testlock2 = lock_create("testlock2");
+	if (testlock == NULL) {
+		panic("cvt5: lock_create failed\n");
+	}
+	testcv = cv_create("testcv");
+	if (testcv == NULL) {
+		panic("cvt5: cv_create failed\n");
+	}
+	exitsem = sem_create("exitsem", 0);
+	if (exitsem == NULL) {
+		panic("cvt5: sem_create failed\n");
+	}
+	spinlock_init(&status_lock);
+	test_status = TEST161_SUCCESS;
+	testval1 = 0;
+
+	lock_acquire(testlock);
+	lock_acquire(testlock2);
+
+	result = thread_fork("cvt5", NULL, sleeperthread, NULL, 0);
+	if (result) {
+		panic("cvt5: thread_fork failed\n");
+	}
+	result = thread_fork("cvt5", NULL, wakerthread, NULL, 0);
+	if (result) {
+		panic("cvt5: thread_fork failed\n");
+	}
+
+	random_yielder(4);
+	cv_wait(testcv, testlock);
+	failif((testval1 != 1));
+	testval1 = 2;
+	random_yielder(4);
+	lock_release(testlock);
+	random_yielder(4);
+	lock_release(testlock2);
+
+	P(exitsem);
+	P(exitsem);
+	failif((testval1 != 4));
+
+	sem_destroy(exitsem);
+	cv_destroy(testcv);
+	lock_destroy(testlock2);
+	lock_destroy(testlock);
+
+	success(test_status, SECRET, "cvt5");
+
+	exitsem = NULL;
+	testcv = NULL;
+	testlock2 = NULL;
+	testlock = NULL;
+	testsem2 = NULL;
+	testsem = NULL;
+
 	return 0;
 }
diff --git a/kern/test/threadlisttest.c b/kern/test/threadlisttest.c
index 993ee01..dd96bd5 100644
--- a/kern/test/threadlisttest.c
+++ b/kern/test/threadlisttest.c
@@ -66,10 +66,7 @@ fakethread_create(const char *name)
 	}
 	/* ignore most of the fields, zero everything for tidiness */
 	bzero(t, sizeof(*t));
-	t->t_name = kstrdup(name);
-	if (t->t_name == NULL) {
-		panic("threadlisttest: Out of memory\n");
-	}
+	strcpy(t->t_name, name);
 	t->t_stack = FAKE_MAGIC;
 	threadlistnode_init(&t->t_listnode, t);
 	return t;
@@ -84,7 +81,6 @@ fakethread_destroy(struct thread *t)
 {
 	KASSERT(t->t_stack == FAKE_MAGIC);
 	threadlistnode_cleanup(&t->t_listnode);
-	kfree(t->t_name);
 	kfree(t);
 }
 
diff --git a/kern/thread/synch.c b/kern/thread/synch.c
index d083f4b..b7a08d9 100644
--- a/kern/thread/synch.c
+++ b/kern/thread/synch.c
@@ -47,18 +47,18 @@
 struct semaphore *
 sem_create(const char *name, unsigned initial_count)
 {
-        struct semaphore *sem;
+	struct semaphore *sem;
 
-        sem = kmalloc(sizeof(*sem));
-        if (sem == NULL) {
-                return NULL;
-        }
+	sem = kmalloc(sizeof(*sem));
+	if (sem == NULL) {
+		return NULL;
+	}
 
-        sem->sem_name = kstrdup(name);
-        if (sem->sem_name == NULL) {
-                kfree(sem);
-                return NULL;
-        }
+	sem->sem_name = kstrdup(name);
+	if (sem->sem_name == NULL) {
+		kfree(sem);
+		return NULL;
+	}
 
 	sem->sem_wchan = wchan_create(sem->sem_name);
 	if (sem->sem_wchan == NULL) {
@@ -68,39 +68,39 @@ sem_create(const char *name, unsigned initial_count)
 	}
 
 	spinlock_init(&sem->sem_lock);
-        sem->sem_count = initial_count;
+	sem->sem_count = initial_count;
 
-        return sem;
+	return sem;
 }
 
 void
 sem_destroy(struct semaphore *sem)
 {
-        KASSERT(sem != NULL);
+	KASSERT(sem != NULL);
 
 	/* wchan_cleanup will assert if anyone's waiting on it */
 	spinlock_cleanup(&sem->sem_lock);
 	wchan_destroy(sem->sem_wchan);
-        kfree(sem->sem_name);
-        kfree(sem);
+	kfree(sem->sem_name);
+	kfree(sem);
 }
 
 void
 P(struct semaphore *sem)
 {
-        KASSERT(sem != NULL);
+	KASSERT(sem != NULL);
 
-        /*
-         * May not block in an interrupt handler.
-         *
-         * For robustness, always check, even if we can actually
-         * complete the P without blocking.
-         */
-        KASSERT(curthread->t_in_interrupt == false);
+	/*
+	 * May not block in an interrupt handler.
+	 *
+	 * For robustness, always check, even if we can actually
+	 * complete the P without blocking.
+	 */
+	KASSERT(curthread->t_in_interrupt == false);
 
 	/* Use the semaphore spinlock to protect the wchan as well. */
 	spinlock_acquire(&sem->sem_lock);
-        while (sem->sem_count == 0) {
+	while (sem->sem_count == 0) {
 		/*
 		 *
 		 * Note that we don't maintain strict FIFO ordering of
@@ -114,21 +114,21 @@ P(struct semaphore *sem)
 		 * ordering?
 		 */
 		wchan_sleep(sem->sem_wchan, &sem->sem_lock);
-        }
-        KASSERT(sem->sem_count > 0);
-        sem->sem_count--;
+	}
+	KASSERT(sem->sem_count > 0);
+	sem->sem_count--;
 	spinlock_release(&sem->sem_lock);
 }
 
 void
 V(struct semaphore *sem)
 {
-        KASSERT(sem != NULL);
+	KASSERT(sem != NULL);
 
 	spinlock_acquire(&sem->sem_lock);
 
-        sem->sem_count++;
-        KASSERT(sem->sem_count > 0);
+	sem->sem_count++;
+	KASSERT(sem->sem_count > 0);
 	wchan_wakeone(sem->sem_wchan, &sem->sem_lock);
 
 	spinlock_release(&sem->sem_lock);
@@ -141,59 +141,59 @@ V(struct semaphore *sem)
 struct lock *
 lock_create(const char *name)
 {
-        struct lock *lock;
+	struct lock *lock;
 
-        lock = kmalloc(sizeof(*lock));
-        if (lock == NULL) {
-                return NULL;
-        }
+	lock = kmalloc(sizeof(*lock));
+	if (lock == NULL) {
+		return NULL;
+	}
 
-        lock->lk_name = kstrdup(name);
-        if (lock->lk_name == NULL) {
-                kfree(lock);
-                return NULL;
-        }
+	lock->lk_name = kstrdup(name);
+	if (lock->lk_name == NULL) {
+		kfree(lock);
+		return NULL;
+	}
 
-        // add stuff here as needed
+	// add stuff here as needed
 
-        return lock;
+	return lock;
 }
 
 void
 lock_destroy(struct lock *lock)
 {
-        KASSERT(lock != NULL);
+	KASSERT(lock != NULL);
 
-        // add stuff here as needed
+	// add stuff here as needed
 
-        kfree(lock->lk_name);
-        kfree(lock);
+	kfree(lock->lk_name);
+	kfree(lock);
 }
 
 void
 lock_acquire(struct lock *lock)
 {
-        // Write this
+	// Write this
 
-        (void)lock;  // suppress warning until code gets written
+	(void)lock;  // suppress warning until code gets written
 }
 
 void
 lock_release(struct lock *lock)
 {
-        // Write this
+	// Write this
 
-        (void)lock;  // suppress warning until code gets written
+	(void)lock;  // suppress warning until code gets written
 }
 
 bool
 lock_do_i_hold(struct lock *lock)
 {
-        // Write this
+	// Write this
 
-        (void)lock;  // suppress warning until code gets written
+	(void)lock;  // suppress warning until code gets written
 
-        return true; // dummy until code gets written
+	return true; // dummy until code gets written
 }
 
 ////////////////////////////////////////////////////////////
@@ -204,47 +204,47 @@ lock_do_i_hold(struct lock *lock)
 struct cv *
 cv_create(const char *name)
 {
-        struct cv *cv;
+	struct cv *cv;
 
-        cv = kmalloc(sizeof(*cv));
-        if (cv == NULL) {
-                return NULL;
-        }
+	cv = kmalloc(sizeof(*cv));
+	if (cv == NULL) {
+		return NULL;
+	}
 
-        cv->cv_name = kstrdup(name);
-        if (cv->cv_name==NULL) {
-                kfree(cv);
-                return NULL;
-        }
+	cv->cv_name = kstrdup(name);
+	if (cv->cv_name==NULL) {
+		kfree(cv);
+		return NULL;
+	}
 
-        // add stuff here as needed
+	// add stuff here as needed
 
-        return cv;
+	return cv;
 }
 
 void
 cv_destroy(struct cv *cv)
 {
-        KASSERT(cv != NULL);
+	KASSERT(cv != NULL);
 
-        // add stuff here as needed
+	// add stuff here as needed
 
-        kfree(cv->cv_name);
-        kfree(cv);
+	kfree(cv->cv_name);
+	kfree(cv);
 }
 
 void
 cv_wait(struct cv *cv, struct lock *lock)
 {
-        // Write this
-        (void)cv;    // suppress warning until code gets written
-        (void)lock;  // suppress warning until code gets written
+	// Write this
+	(void)cv;    // suppress warning until code gets written
+	(void)lock;  // suppress warning until code gets written
 }
 
 void
 cv_signal(struct cv *cv, struct lock *lock)
 {
-        // Write this
+	// Write this
 	(void)cv;    // suppress warning until code gets written
 	(void)lock;  // suppress warning until code gets written
 }
diff --git a/kern/thread/thread.c b/kern/thread/thread.c
index a41dc58..8ceeaf5 100644
--- a/kern/thread/thread.c
+++ b/kern/thread/thread.c
@@ -65,10 +65,16 @@ struct wchan {
 DECLARRAY(cpu, static __UNUSED inline);
 DEFARRAY(cpu, static __UNUSED inline);
 static struct cpuarray allcpus;
+unsigned num_cpus;
 
 /* Used to wait for secondary CPUs to come online. */
 static struct semaphore *cpu_startup_sem;
 
+/* Used to synchronize exit cleanup. */
+unsigned thread_count = 0;
+static struct spinlock thread_count_lock = SPINLOCK_INITIALIZER;
+static struct wchan *thread_count_wchan;
+
 ////////////////////////////////////////////////////////////
 
 /*
@@ -119,17 +125,16 @@ thread_create(const char *name)
 	struct thread *thread;
 
 	DEBUGASSERT(name != NULL);
+	if (strlen(name) > MAX_NAME_LENGTH) {
+		return NULL;
+	}
 
 	thread = kmalloc(sizeof(*thread));
 	if (thread == NULL) {
 		return NULL;
 	}
 
-	thread->t_name = kstrdup(name);
-	if (thread->t_name == NULL) {
-		kfree(thread);
-		return NULL;
-	}
+	strcpy(thread->t_name, name);
 	thread->t_wchan_name = "NEW";
 	thread->t_state = S_READY;
 
@@ -256,6 +261,9 @@ cpu_create(unsigned hardware_number)
  * Nor can it be called on a running thread.
  *
  * (Freeing the stack you're actually using to run is ... inadvisable.)
+ *
+ * Thread destroy should finish the process of cleaning up a thread started by
+ * thread_exit.
  */
 static
 void
@@ -264,11 +272,6 @@ thread_destroy(struct thread *thread)
 	KASSERT(thread != curthread);
 	KASSERT(thread->t_state != S_RUN);
 
-	/*
-	 * If you add things to struct thread, be sure to clean them up
-	 * either here or in thread_exit(). (And not both...)
-	 */
-
 	/* Thread subsystem fields */
 	KASSERT(thread->t_proc == NULL);
 	if (thread->t_stack != NULL) {
@@ -280,7 +283,6 @@ thread_destroy(struct thread *thread)
 	/* sheer paranoia */
 	thread->t_wchan_name = "DESTROYED";
 
-	kfree(thread->t_name);
 	kfree(thread);
 }
 
@@ -411,8 +413,6 @@ cpu_hatch(unsigned software_number)
 	spl0();
 	cpu_identify(buf, sizeof(buf));
 
-	kprintf("cpu%u: %s\n", software_number, buf);
-
 	V(cpu_startup_sem);
 	thread_exit();
 }
@@ -430,13 +430,26 @@ thread_start_cpus(void)
 	kprintf("cpu0: %s\n", buf);
 
 	cpu_startup_sem = sem_create("cpu_hatch", 0);
+	thread_count_wchan = wchan_create("thread_count");
 	mainbus_start_cpus();
 
-	for (i=0; i<cpuarray_num(&allcpus) - 1; i++) {
+	num_cpus = cpuarray_num(&allcpus);
+	for (i=0; i<num_cpus - 1; i++) {
 		P(cpu_startup_sem);
 	}
 	sem_destroy(cpu_startup_sem);
+	if (i == 0) {
+		kprintf("1 CPU online\n");
+	} else {
+		kprintf("%d CPUs online\n", i + 1);
+	}
 	cpu_startup_sem = NULL;
+
+	// Gross hack to deal with os/161 "idle" threads. Hardcode the thread count
+	// to 1 so the inc/dec properly works in thread_[fork/exit]. The one thread
+	// is the cpu0 boot thread (menu), which is the only thread that hasn't
+	// exited yet.
+	thread_count = 1;
 }
 
 /*
@@ -465,7 +478,7 @@ thread_make_runnable(struct thread *target, bool already_have_lock)
 	target->t_state = S_READY;
 	threadlist_addtail(&targetcpu->c_runqueue, target);
 
-	if (targetcpu->c_isidle && targetcpu != curcpu->c_self) {
+	if (targetcpu->c_isidle) {
 		/*
 		 * Other processor is idle; send interrupt to make
 		 * sure it unidles.
@@ -535,6 +548,11 @@ thread_fork(const char *name,
 	 */
 	newthread->t_iplhigh_count++;
 
+	spinlock_acquire(&thread_count_lock);
+	++thread_count;
+	wchan_wakeall(thread_count_wchan, &thread_count_lock);
+	spinlock_release(&thread_count_lock);
+
 	/* Set up the switchframe so entrypoint() gets called */
 	switchframe_init(newthread, entrypoint, data1, data2);
 
@@ -770,6 +788,13 @@ thread_startup(void (*entrypoint)(void *data1, unsigned long data2),
  * should be cleaned up right away. The rest has to wait until
  * thread_destroy is called from exorcise().
  *
+ * Note that any dynamically-allocated structures that can vary in size from
+ * thread to thread should be cleaned up here, not in thread_destroy. This is
+ * because the last thread left on each core runs the idle loop and does not
+ * get cleaned up until new threads are created. Differences in the amount of
+ * memory used by different threads after thread_exit will make it look like
+ * your kernel in leaking memory and cause some of the test161 checks to fail.
+ *
  * Does not return.
  */
 void
@@ -791,8 +816,16 @@ thread_exit(void)
 	/* Check the stack guard band. */
 	thread_checkstack(cur);
 
+	// Decrement the thread count and notify anyone interested.
+	if (thread_count) {
+		spinlock_acquire(&thread_count_lock);
+		--thread_count;
+		wchan_wakeall(thread_count_wchan, &thread_count_lock);
+		spinlock_release(&thread_count_lock);
+	}
+
 	/* Interrupts off on this processor */
-        splhigh();
+	splhigh();
 	thread_switch(S_ZOMBIE, NULL, NULL);
 	panic("braaaaaaaiiiiiiiiiiinssssss\n");
 }
@@ -1106,9 +1139,6 @@ ipi_send(struct cpu *target, int code)
 	spinlock_release(&target->c_ipi_lock);
 }
 
-/*
- * Send an IPI to all CPUs.
- */
 void
 ipi_broadcast(int code)
 {
@@ -1123,28 +1153,16 @@ ipi_broadcast(int code)
 	}
 }
 
-/*
- * Send a TLB shootdown IPI to the specified CPU.
- */
 void
 ipi_tlbshootdown(struct cpu *target, const struct tlbshootdown *mapping)
 {
-	unsigned n;
+	int n;
 
 	spinlock_acquire(&target->c_ipi_lock);
 
 	n = target->c_numshootdown;
 	if (n == TLBSHOOTDOWN_MAX) {
-		/*
-		 * If you have problems with this panic going off,
-		 * consider: (1) increasing the maximum, (2) putting
-		 * logic here to sleep until space appears (may
-		 * interact awkwardly with VM system locking), (3)
-		 * putting logic here to coalesce requests together,
-		 * and/or (4) improving VM system state tracking to
-		 * reduce the number of unnecessary shootdowns.
-		 */
-		panic("ipi_tlbshootdown: Too many shootdowns queued\n");
+		target->c_numshootdown = TLBSHOOTDOWN_ALL;
 	}
 	else {
 		target->c_shootdown[n] = *mapping;
@@ -1157,14 +1175,11 @@ ipi_tlbshootdown(struct cpu *target, const struct tlbshootdown *mapping)
 	spinlock_release(&target->c_ipi_lock);
 }
 
-/*
- * Handle an incoming interprocessor interrupt.
- */
 void
 interprocessor_interrupt(void)
 {
 	uint32_t bits;
-	unsigned i;
+	int i;
 
 	spinlock_acquire(&curcpu->c_ipi_lock);
 	bits = curcpu->c_ipi_pending;
@@ -1183,7 +1198,6 @@ interprocessor_interrupt(void)
 				curcpu->c_number);
 		}
 		spinlock_release(&curcpu->c_runqueue_lock);
-		kprintf("cpu%d: offline.\n", curcpu->c_number);
 		cpu_halt();
 	}
 	if (bits & (1U << IPI_UNIDLE)) {
@@ -1193,13 +1207,13 @@ interprocessor_interrupt(void)
 		 */
 	}
 	if (bits & (1U << IPI_TLBSHOOTDOWN)) {
-		/*
-		 * Note: depending on your VM system locking you might
-		 * need to release the ipi lock while calling
-		 * vm_tlbshootdown.
-		 */
-		for (i=0; i<curcpu->c_numshootdown; i++) {
-			vm_tlbshootdown(&curcpu->c_shootdown[i]);
+		if (curcpu->c_numshootdown == TLBSHOOTDOWN_ALL) {
+			vm_tlbshootdown_all();
+		}
+		else {
+			for (i=0; i<curcpu->c_numshootdown; i++) {
+				vm_tlbshootdown(&curcpu->c_shootdown[i]);
+			}
 		}
 		curcpu->c_numshootdown = 0;
 	}
@@ -1207,3 +1221,15 @@ interprocessor_interrupt(void)
 	curcpu->c_ipi_pending = 0;
 	spinlock_release(&curcpu->c_ipi_lock);
 }
+
+/*
+ * Wait for the thread count to equal tc.
+ */
+void thread_wait_for_count(unsigned tc)
+{
+	spinlock_acquire(&thread_count_lock);
+	while (thread_count != tc) {
+		wchan_sleep(thread_count_wchan, &thread_count_lock);
+	}
+	spinlock_release(&thread_count_lock);
+}
diff --git a/kern/vfs/vfslist.c b/kern/vfs/vfslist.c
index 9cd2f4a..184e622 100644
--- a/kern/vfs/vfslist.c
+++ b/kern/vfs/vfslist.c
@@ -82,9 +82,6 @@ struct knowndev {
 	struct fs *kd_fs;
 };
 
-/* A placeholder for kd_fs for devices used as swap */
-#define SWAP_FS	((struct fs *)-1)
-
 DECLARRAY(knowndev, static __UNUSED inline);
 DEFARRAY(knowndev, static __UNUSED inline);
 
@@ -163,7 +160,7 @@ vfs_sync(void)
 	num = knowndevarray_num(knowndevs);
 	for (i=0; i<num; i++) {
 		dev = knowndevarray_get(knowndevs, i);
-		if (dev->kd_fs != NULL && dev->kd_fs != SWAP_FS) {
+		if (dev->kd_fs != NULL) {
 			/*result =*/ FSOP_SYNC(dev->kd_fs);
 		}
 	}
@@ -198,7 +195,7 @@ vfs_getroot(const char *devname, struct vnode **ret)
 		 * and DEVNAME names the device, return ENXIO.
 		 */
 
-		if (kd->kd_fs != NULL && kd->kd_fs != SWAP_FS) {
+		if (kd->kd_fs!=NULL) {
 			const char *volname;
 			volname = FSOP_GETVOLNAME(kd->kd_fs);
 
@@ -347,7 +344,7 @@ badnames(const char *n1, const char *n2, const char *n3)
 	for (i=0; i<num; i++) {
 		kd = knowndevarray_get(knowndevs, i);
 
-		if (kd->kd_fs != NULL && kd->kd_fs != SWAP_FS) {
+		if (kd->kd_fs) {
 			volname = FSOP_GETVOLNAME(kd->kd_fs);
 			if (samestring3(volname, n1, n2, n3)) {
 				return 1;
@@ -545,7 +542,6 @@ vfs_mount(const char *devname, void *data,
 	}
 
 	KASSERT(fs != NULL);
-	KASSERT(fs != SWAP_FS); 
 
 	kd->kd_fs = fs;
 
@@ -557,59 +553,6 @@ vfs_mount(const char *devname, void *data,
 	return 0;
 }
 
-/*
- * Like mount, but for attaching swap. Hands back the raw device
- * vnode. Unlike mount tolerates a trailing colon on the device name,
- * to avoid student-facing confusion.
- */
-int
-vfs_swapon(const char *devname, struct vnode **ret)
-{
-	char *myname = NULL;
-	size_t len;
-	struct knowndev *kd;
-	int result;
-
-	len = strlen(devname);
-	if (len > 0 && devname[len - 1] == ':') {
-		/* tolerate trailing :, e.g. lhd0: rather than lhd0 */
-		myname = kstrdup(devname);
-		if (myname == NULL) {
-			return ENOMEM;
-		}
-		myname[len - 1] = 0;
-		devname = myname;
-	}
-
-	vfs_biglock_acquire();
-
-	result = findmount(devname, &kd);
-	if (result) {
-		goto out;
-	}
-
-	if (kd->kd_fs != NULL) {
-		result = EBUSY;
-		goto out;
-	}
-	KASSERT(kd->kd_rawname != NULL);
-	KASSERT(kd->kd_device != NULL);
-
-	kprintf("vfs: Swap attached to %s\n", kd->kd_name);
-
-	kd->kd_fs = SWAP_FS;
-	VOP_INCREF(kd->kd_vnode);
-	*ret = kd->kd_vnode;
-
- out:
-	vfs_biglock_release();
-	if (myname != NULL) {
-		kfree(myname);
-	}
-
-	return result;
-}
-
 /*
  * Unmount a filesystem/device by name.
  * First calls FSOP_SYNC on the filesystem; then calls FSOP_UNMOUNT.
@@ -627,7 +570,7 @@ vfs_unmount(const char *devname)
 		goto fail;
 	}
 
-	if (kd->kd_fs == NULL || kd->kd_fs == SWAP_FS) {
+	if (kd->kd_fs == NULL) {
 		result = EINVAL;
 		goto fail;
 	}
@@ -657,43 +600,6 @@ vfs_unmount(const char *devname)
 	return result;
 }
 
-/*
- * Detach swap. Like unmount.
- *
- * (Provided for completeness; there is no real need to remove swap
- * explicitly prior to shutting down, except perhaps when swapping to
- * things that themselves want a clean shutdown, like RAIDs.)
- */
-int
-vfs_swapoff(const char *devname)
-{
-	struct knowndev *kd;
-	int result;
-
-	vfs_biglock_acquire();
-
-	result = findmount(devname, &kd);
-	if (result) {
-		goto fail;
-	}
-
-	if (kd->kd_fs != SWAP_FS) {
-		result = EINVAL;
-		goto fail;
-	}
-
-	kprintf("vfs: Swap detached from %s:\n", kd->kd_name);
-
-	/* drop it */
-	kd->kd_fs = NULL;
-
-	KASSERT(result==0);
-
- fail:
-	vfs_biglock_release();
-	return result;
-}
-
 /*
  * Global unmount function.
  */
@@ -717,11 +623,6 @@ vfs_unmountall(void)
 			/* not mounted */
 			continue;
 		}
-		if (dev->kd_fs == SWAP_FS) {
-			/* just drop it */
-			dev->kd_fs = NULL;
-			continue;
-		}
 
 		kprintf("vfs: Unmounting %s:\n", dev->kd_name);
 
diff --git a/kern/vfs/vnode.c b/kern/vfs/vnode.c
index 7322707..374c300 100644
--- a/kern/vfs/vnode.c
+++ b/kern/vfs/vnode.c
@@ -129,8 +129,7 @@ vnode_decref(struct vnode *vn)
 void
 vnode_check(struct vnode *v, const char *opstr)
 {
-	/* not safe, and not really needed to check constant fields */
-	/*vfs_biglock_acquire();*/
+	vfs_biglock_acquire();
 
 	if (v == NULL) {
 		panic("vnode_check: vop_%s: null vnode\n", opstr);
@@ -174,5 +173,5 @@ vnode_check(struct vnode *v, const char *opstr)
 	}
 
 	spinlock_release(&v->vn_countlock);
-	/*vfs_biglock_release();*/
+	vfs_biglock_release();
 }
diff --git a/kern/vm/kmalloc.c b/kern/vm/kmalloc.c
index 453b3cc..13684a7 100644
--- a/kern/vm/kmalloc.c
+++ b/kern/vm/kmalloc.c
@@ -31,6 +31,8 @@
 #include <lib.h>
 #include <spinlock.h>
 #include <vm.h>
+#include <kern/test161.h>
+#include <test.h>
 
 /*
  * Kernel malloc.
@@ -743,8 +745,8 @@ kheap_dumpall(void)
  * Print the allocated/freed map of a single kernel heap page.
  */
 static
-void
-subpage_stats(struct pageref *pr)
+unsigned long
+subpage_stats(struct pageref *pr, bool quiet)
 {
 	vaddr_t prpage, fla;
 	struct freelist *fl;
@@ -780,18 +782,21 @@ subpage_stats(struct pageref *pr)
 		}
 	}
 
-	kprintf("at 0x%08lx: size %-4lu  %u/%u free\n",
-		(unsigned long)prpage, (unsigned long) sizes[blktype],
-		(unsigned) pr->nfree, n);
-	kprintf("   ");
-	for (i=0; i<n; i++) {
-		int val = (freemap[i/32] & (1<<(i%32)))!=0;
-		kprintf("%c", val ? '.' : '*');
-		if (i%64==63 && i<n-1) {
-			kprintf("\n   ");
+	if (!quiet) {
+		kprintf("at 0x%08lx: size %-4lu  %u/%u free\n",
+				(unsigned long)prpage, (unsigned long) sizes[blktype],
+				(unsigned) pr->nfree, n);
+		kprintf("   ");
+		for (i=0; i<n; i++) {
+			int val = (freemap[i/32] & (1<<(i%32)))!=0;
+			kprintf("%c", val ? '.' : '*');
+			if (i%64==63 && i<n-1) {
+				kprintf("\n   ");
+			}
 		}
+		kprintf("\n");
 	}
-	kprintf("\n");
+	return ((unsigned long)sizes[blktype] * (n - (unsigned) pr->nfree));
 }
 
 /*
@@ -808,12 +813,55 @@ kheap_printstats(void)
 	kprintf("Subpage allocator status:\n");
 
 	for (pr = allbase; pr != NULL; pr = pr->next_all) {
-		subpage_stats(pr);
+		subpage_stats(pr, false);
 	}
 
 	spinlock_release(&kmalloc_spinlock);
 }
 
+
+/*
+ * Return the number of used bytes.
+ */
+
+unsigned long
+kheap_getused(void) {
+	struct pageref *pr;
+	unsigned long total = 0;
+	unsigned int num_pages = 0, coremap_bytes = 0;
+
+	/* compute with interrupts off */
+	spinlock_acquire(&kmalloc_spinlock);
+	for (pr = allbase; pr != NULL; pr = pr->next_all) {
+		total += subpage_stats(pr, true);
+		num_pages++;
+	}
+
+	coremap_bytes = coremap_used_bytes();
+
+	// Don't double-count the pages we're using for subpage allocation;
+	// we've already accounted for the used portion.
+	if (coremap_bytes > 0) {
+		total += coremap_bytes - (num_pages * PAGE_SIZE);
+	}
+
+	spinlock_release(&kmalloc_spinlock);
+
+	return total;
+}
+
+/*
+ * Print number of used bytes.
+ */
+
+void
+kheap_printused(void)
+{
+	char total_string[32];
+	snprintf(total_string, sizeof(total_string), "%lu", kheap_getused());
+	secprintf(SECRET, total_string, "khu");
+}
+
 ////////////////////////////////////////
 
 /*
@@ -967,7 +1015,7 @@ subpage_kmalloc(size_t sz
 	prpage = alloc_kpages(1);
 	if (prpage==0) {
 		/* Out of memory. */
-		kprintf("kmalloc: Subpage allocator couldn't get a page\n");
+		silent("kmalloc: Subpage allocator couldn't get a page\n");
 		return NULL;
 	}
 	KASSERT(prpage % PAGE_SIZE == 0);
diff --git a/mk/os161.config.mk b/mk/os161.config.mk
index ad246e7..b77fcc6 100644
--- a/mk/os161.config.mk
+++ b/mk/os161.config.mk
@@ -87,15 +87,6 @@
 # These build variables can be set explicitly for further control if
 # desired, but should in general not need attention.
 #
-# (Tools.)
-#
-# PYTHON_INTERPRETER		Location of Python interpreter.
-#				Default is "/usr/bin/env python".
-#
-# This may need to be changed on some platforms; but the configure
-# script is supposed to take care of it for you. If that fails, or
-# picks the wrong thing, please file a bug report.
-#
 # (Locations.)
 #
 # BUILDTOP			Top of tree where .o files go.
@@ -105,7 +96,7 @@
 #				the build. Default is $(WORKDIR)/tooldir.
 #
 # INSTALLTOP			Staging directory for installation.
-#				Default is $(WORKDIR)/install.
+#				Default is $(WORKDIR)/install
 #
 # Probably the only reason to change these would be if you're short on
 # diskspace in $(WORKDIR).
@@ -479,7 +470,7 @@ MORECFLAGS+=-I$(INSTALLTOP)/include
 LDFLAGS+=-nostdlib -L$(INSTALLTOP)/lib $(INSTALLTOP)/lib/crt0.o
 MORELIBS+=-lc
 LIBDEPS+=$(INSTALLTOP)/lib/crt0.o $(INSTALLTOP)/lib/libc.a
-
+LIBS+=-ltest161
 ############################################################
 
 # end.
diff --git a/mk/os161.hostlib.mk b/mk/os161.hostlib.mk
index 88517d9..d4ac6bc 100644
--- a/mk/os161.hostlib.mk
+++ b/mk/os161.hostlib.mk
@@ -56,7 +56,7 @@ all-local: $(MYBUILDDIR) .WAIT $(MYBUILDDIR)/$(_LIB_)
 install-staging-local: $(TOOLDIR)/hostlib .WAIT $(TOOLDIR)/hostlib/$(_LIB_)
 $(TOOLDIR)/hostlib/$(_LIB_): $(MYBUILDDIR)/$(_LIB_)
 	rm -f $(.TARGET)
-	ln $(MYBUILDDIR)/$(_LIB_) $(.TARGET) || \
+	ln $(MYBUILDDIR)/$(_LIB_) $(.TARGET) >/dev/null 2>&1 || \
 	  cp $(MYBUILDDIR)/$(_LIB_) $(.TARGET)
 
 install-local:
diff --git a/mk/os161.hostprog.mk b/mk/os161.hostprog.mk
index 13e5984..1cb73e6 100644
--- a/mk/os161.hostprog.mk
+++ b/mk/os161.hostprog.mk
@@ -76,14 +76,14 @@ cleanhostprog:
 install-staging-local: $(_INSTALLDIR_) .WAIT $(_INSTALLDIR_)/$(_PROG_)
 $(_INSTALLDIR_)/$(_PROG_): $(MYBUILDDIR)/$(_PROG_)
 	rm -f $(.TARGET)
-	ln $(MYBUILDDIR)/$(_PROG_) $(.TARGET) || \
+	ln $(MYBUILDDIR)/$(_PROG_) $(.TARGET) >/dev/null 2>&1 || \
 	  cp $(MYBUILDDIR)/$(_PROG_) $(.TARGET)
 
 .if defined(HOSTBINDIR)
 install-local: install-hostprog
 install-hostprog: $(OSTREE)$(HOSTBINDIR) $(MYBUILDDIR)/$(_PROG_)
 	rm -f $(OSTREE)$(HOSTBINDIR)/$(_PROG_)
-	ln $(MYBUILDDIR)/$(_PROG_) $(OSTREE)$(HOSTBINDIR)/$(_PROG_) || \
+	ln $(MYBUILDDIR)/$(_PROG_) $(OSTREE)$(HOSTBINDIR)/$(_PROG_) >/dev/null 2>&1 || \
 	  cp $(MYBUILDDIR)/$(_PROG_) $(OSTREE)$(HOSTBINDIR)/$(_PROG_)
 .else
 install-local:
diff --git a/mk/os161.kernel.mk b/mk/os161.kernel.mk
index ebb8003..035fd9c 100644
--- a/mk/os161.kernel.mk
+++ b/mk/os161.kernel.mk
@@ -163,6 +163,9 @@ includelinks:
 clean:
 	rm -f *.o *.a tags $(KERNEL)
 	rm -rf includelinks
+	@ABSTOP=$$(readlink -f $(TOP))
+	rm -f $(OSTREE)/.src
+	rm -f $(TOP)/.root
 
 distclean cleandir: clean
 	rm -f .depend
@@ -188,6 +191,9 @@ install:
 	cp $(KERNEL) $(OSTREE)/$(KERNEL)-$(CONFNAME)
 	-rm -f $(OSTREE)/$(KERNEL)
 	ln -s $(KERNEL)-$(CONFNAME) $(OSTREE)/$(KERNEL)
+	@ABSTOP=$$(readlink -f $(TOP))
+	ln -Tsf $(ABSTOP) $(OSTREE)/.src
+	ln -Tsf $(OSTREE) $(ABSTOP)/.root
 
 #
 # Run tags on all the sources and header files. This is probably not
diff --git a/mk/os161.lib.mk b/mk/os161.lib.mk
index 699ee71..f9f8e53 100644
--- a/mk/os161.lib.mk
+++ b/mk/os161.lib.mk
@@ -59,13 +59,13 @@ all-local: $(MYBUILDDIR) .WAIT $(MYBUILDDIR)/$(_LIB_)
 install-staging-local: $(INSTALLTOP)$(LIBDIR) .WAIT $(INSTALLTOP)$(LIBDIR)/$(_LIB_)
 $(INSTALLTOP)$(LIBDIR)/$(_LIB_): $(MYBUILDDIR)/$(_LIB_)
 	rm -f $(.TARGET)
-	ln $(MYBUILDDIR)/$(_LIB_) $(.TARGET) || \
+	ln $(MYBUILDDIR)/$(_LIB_) $(.TARGET) >/dev/null 2>&1 || \
 	  cp $(MYBUILDDIR)/$(_LIB_) $(.TARGET)
 
 install-local: $(OSTREE)$(LIBDIR) $(MYBUILDDIR)/$(_LIB_)
 	@echo "Warning: manually installing library without relinking anything"
 	rm -f $(OSTREE)$(LIBDIR)/$(_LIB_)
-	ln $(MYBUILDDIR)/$(_LIB_) $(OSTREE)$(LIBDIR)/$(_LIB_) || \
+	ln $(MYBUILDDIR)/$(_LIB_) $(OSTREE)$(LIBDIR)/$(_LIB_) >/dev/null 2>&1 || \
 	  cp $(MYBUILDDIR)/$(_LIB_) $(OSTREE)$(LIBDIR)/$(_LIB_)
 
 # Build the library.
diff --git a/mk/os161.man.mk b/mk/os161.man.mk
index 0e3590a..4e07b00 100644
--- a/mk/os161.man.mk
+++ b/mk/os161.man.mk
@@ -44,24 +44,21 @@ install-staging-local: $(INSTALLTOP)$(MANDIR) .WAIT
 install-staging-local: $(INSTALLTOP)$(MANDIR)/$(_F_)
 $(INSTALLTOP)$(MANDIR)/$(_F_): $(_F_)
 	rm -f $(.TARGET)
-	ln $(_F_) $(.TARGET) || cp $(_F_) $(.TARGET)
+	ln $(_F_) $(.TARGET) >/dev/null 2>&1 || cp $(_F_) $(.TARGET)
 .endfor
 
 install-local: $(OSTREE)$(MANDIR) .WAIT installmanpages
 installmanpages:
 .for _F_ in $(MANFILES)
 	rm -f $(OSTREE)$(MANDIR)/$(_F_)
-	ln $(_F_) $(OSTREE)$(MANDIR)/$(_F_) || \
+	ln $(_F_) $(OSTREE)$(MANDIR)/$(_F_) >/dev/null 2>&1 || \
 	  cp $(_F_) $(OSTREE)$(MANDIR)/$(_F_)
 .endfor
 
-# clean: remove build products (nothing to do)
-clean-local: ;
 
 # Mark targets that don't represent files PHONY, to prevent various
 # lossage if files by those names appear.
 .PHONY: all all-local install-staging-local install-local installmanpages
-.PHONY: clean-local
 
 # Finally, get the shared definitions for the most basic rules.
 .include "$(TOP)/mk/os161.baserules.mk"
diff --git a/mk/os161.prog.mk b/mk/os161.prog.mk
index 96876c5..a087626 100644
--- a/mk/os161.prog.mk
+++ b/mk/os161.prog.mk
@@ -61,13 +61,13 @@ cleanprog:
 install-staging-local: $(INSTALLTOP)$(BINDIR) .WAIT $(INSTALLTOP)$(BINDIR)/$(PROG)
 $(INSTALLTOP)$(BINDIR)/$(PROG): $(MYBUILDDIR)/$(PROG)
 	rm -f $(.TARGET)
-	ln $(MYBUILDDIR)/$(PROG) $(.TARGET) || \
+	ln $(MYBUILDDIR)/$(PROG) $(.TARGET) >/dev/null 2>&1 || \
 	  cp $(MYBUILDDIR)/$(PROG) $(.TARGET)
 
 install-local: install-prog
 install-prog: $(OSTREE)$(BINDIR) $(MYBUILDDIR)/$(PROG)
 	rm -f $(OSTREE)$(BINDIR)/$(PROG)
-	ln $(MYBUILDDIR)/$(PROG) $(OSTREE)$(BINDIR)/$(PROG) || \
+	ln $(MYBUILDDIR)/$(PROG) $(OSTREE)$(BINDIR)/$(PROG) >/dev/null 2>&1 || \
 	  cp $(MYBUILDDIR)/$(PROG) $(OSTREE)$(BINDIR)/$(PROG)
 
 # Link the program.
diff --git a/userland/Makefile b/userland/Makefile
index 0ad87da..4ec29c1 100644
--- a/userland/Makefile
+++ b/userland/Makefile
@@ -12,6 +12,7 @@ INCLUDES=\
 	include include \
 	include/sys include/sys \
 	include/test include/test \
+	include/test161 include/test161 \
 	include/types include/types
 
 INCLUDELINKS=\
diff --git a/userland/include/stdio.h b/userland/include/stdio.h
index 20e96cb..e8518ea 100644
--- a/userland/include/stdio.h
+++ b/userland/include/stdio.h
@@ -56,6 +56,11 @@ int vprintf(const char *fmt, __va_list ap);
 int snprintf(char *buf, size_t len, const char *fmt, ...);
 int vsnprintf(char *buf, size_t len, const char *fmt, __va_list ap);
 
+/* Automated testing extensions. */
+
+int tprintf(const char *fmt, ...);
+int nprintf(const char *fmt, ...);
+
 /* Print the argument string and then a newline. Returns 0 or -1 on error. */
 int puts(const char *);
 
diff --git a/userland/lib/Makefile b/userland/lib/Makefile
index 842056c..54fbe24 100644
--- a/userland/lib/Makefile
+++ b/userland/lib/Makefile
@@ -8,6 +8,6 @@
 TOP=../..
 .include "$(TOP)/mk/os161.config.mk"
 
-SUBDIRS=crt0 libc libtest hostcompat
+SUBDIRS=crt0 libc libtest libtest161 hostcompat
 
 .include "$(TOP)/mk/os161.subdir.mk"
diff --git a/userland/lib/hostcompat/Makefile b/userland/lib/hostcompat/Makefile
index 4cd6ab0..22a7664 100644
--- a/userland/lib/hostcompat/Makefile
+++ b/userland/lib/hostcompat/Makefile
@@ -22,6 +22,11 @@ TOP=../../..
 LIB=hostcompat
 SRCS=err.c ntohll.c time.c hostcompat.c
 
+# printf
+COMMON=$(TOP)/common/libc
+SRCS+=\
+	$(COMMON)/printf/tprintf.c
+
 HOST_CFLAGS+=$(COMPAT_CFLAGS)
 
 MKDIRS=$(INSTALLTOP)/hostinclude
diff --git a/userland/lib/hostcompat/hostcompat.h b/userland/lib/hostcompat/hostcompat.h
index 7191964..8e37e7b 100644
--- a/userland/lib/hostcompat/hostcompat.h
+++ b/userland/lib/hostcompat/hostcompat.h
@@ -35,6 +35,11 @@ void hostcompat_init(int argc, char **argv);
 
 time_t __time(time_t *secs, unsigned long *nsecs);
 
+/* Automated testing extensions. */
+
+int tprintf(const char *fmt, ...);
+int nprintf(const char *fmt, ...);
+
 #ifdef DECLARE_NTOHLL
 uint64_t ntohll(uint64_t);
 #define htonll(x) (ntohll(x))
diff --git a/userland/lib/libc/Makefile b/userland/lib/libc/Makefile
index 1d25230..9955311 100644
--- a/userland/lib/libc/Makefile
+++ b/userland/lib/libc/Makefile
@@ -10,7 +10,8 @@ COMMON=$(TOP)/common/libc
 # printf
 SRCS+=\
 	$(COMMON)/printf/__printf.c \
-	$(COMMON)/printf/snprintf.c
+	$(COMMON)/printf/snprintf.c \
+	$(COMMON)/printf/tprintf.c
 
 # stdio
 SRCS+=\
diff --git a/userland/lib/libc/stdio/printf.c b/userland/lib/libc/stdio/printf.c
index f0d627b..21e5304 100644
--- a/userland/lib/libc/stdio/printf.c
+++ b/userland/lib/libc/stdio/printf.c
@@ -31,6 +31,8 @@
 #include <stdarg.h>
 #include <unistd.h>
 #include <errno.h>
+#include <string.h>
+#include <kern/secret.h>
 
 /*
  * printf - C standard I/O function.
diff --git a/userland/lib/libc/unix/err.c b/userland/lib/libc/unix/err.c
index a4992d1..214f89d 100644
--- a/userland/lib/libc/unix/err.c
+++ b/userland/lib/libc/unix/err.c
@@ -139,6 +139,7 @@ verr(int exitcode, const char *fmt, va_list ap)
 {
 	__printerr(1, fmt, ap);
 	exit(exitcode);
+	// exit() didn't work.
 }
 
 /* errx/verrx: don't use errno, but do then exit */
@@ -147,6 +148,7 @@ verrx(int exitcode, const char *fmt, va_list ap)
 {
 	__printerr(0, fmt, ap);
 	exit(exitcode);
+	// exit() didn't work.
 }
 
 /*
diff --git a/userland/testbin/Makefile b/userland/testbin/Makefile
index e5cf502..cc522ca 100644
--- a/userland/testbin/Makefile
+++ b/userland/testbin/Makefile
@@ -7,11 +7,12 @@ TOP=../..
 
 SUBDIRS=add argtest badcall bigexec bigfile bigfork bigseek bloat conman \
 	crash ctest dirconc dirseek dirtest f_test factorial farm faulter \
-	filetest forkbomb forktest frack guzzle hash hog huge kitchen \
+	filetest fileonlytest forkbomb forktest frack guzzle hash hog huge kitchen \
 	malloctest matmult multiexec palin parallelvm poisondisk psort \
 	quinthuge quintmat quintsort randcall redirect rmdirtest rmtest \
-	sbrktest schedpong sink sort sparsefile sty tail tictac triplehuge \
-	triplemat triplesort usemtest zero
+	sbrktest schedpong shll sink sort sparsefile spinner sty tail tictac \
+	triplehuge triplemat triplesort usemtest waiter zero \
+	consoletest shelltest opentest readwritetest closetest stacktest
 
 # But not:
 #    userthreads    (no support in kernel API in base system)
diff --git a/userland/testbin/add/add.c b/userland/testbin/add/add.c
index 856e4ec..edd680c 100644
--- a/userland/testbin/add/add.c
+++ b/userland/testbin/add/add.c
@@ -38,6 +38,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <err.h>
+#include <test161/test161.h>
 
 int
 main(int argc, char *argv[])
@@ -51,7 +52,9 @@ main(int argc, char *argv[])
 	i = atoi(argv[1]);
 	j = atoi(argv[2]);
 
-	printf("Answer: %d\n", i+j);
-
+	tprintf("Answer: %d\n", i+j);
+	char buf[16];
+	snprintf(buf, 16, "%d", i+j);
+	secprintf(SECRET, buf, "/testbin/add");
 	return 0;
 }
diff --git a/userland/testbin/argtest/argtest.c b/userland/testbin/argtest/argtest.c
index 7ed552e..b805c59 100644
--- a/userland/testbin/argtest/argtest.c
+++ b/userland/testbin/argtest/argtest.c
@@ -36,6 +36,7 @@
  */
 
 #include <stdio.h>
+#include <test161/test161.h>
 
 int
 main(int argc, char *argv[])
@@ -43,14 +44,18 @@ main(int argc, char *argv[])
 	const char *tmp;
 	int i;
 
-	printf("argc: %d\n", argc);
+	tprintf("argc: %d\n", argc);
+	char buf[16];
+	snprintf(buf, 16, "argc: %d", argc);
+	secprintf(SECRET, buf, "/testbin/argtest");
 
 	for (i=0; i<=argc; i++) {
 		tmp = argv[i];
 		if (tmp==NULL) {
 			tmp = "[NULL]";
 		}
-		printf("argv[%d]: %s\n", i, tmp);
+		tprintf("argv[%d]: %s\n", i, tmp);
+		secprintf(SECRET, tmp, "/testbin/argtest");
 	}
 
 	return 0;
diff --git a/userland/testbin/badcall/bad_chdir.c b/userland/testbin/badcall/bad_chdir.c
index cf98845..ec057c2 100644
--- a/userland/testbin/badcall/bad_chdir.c
+++ b/userland/testbin/badcall/bad_chdir.c
@@ -38,7 +38,7 @@
 #include "test.h"
 
 static
-void
+int
 chdir_empty(void)
 {
 	int rv;
@@ -49,13 +49,20 @@ chdir_empty(void)
 
 	report_begin("chdir to empty string");
 	rv = chdir("");
-	report_check2(rv, errno, EINVAL, 0);
+	return report_check2(rv, errno, EINVAL, 0);
 }
 
 void
 test_chdir(void)
 {
-	test_chdir_path();
-	chdir_empty();
+	int ntests = 0, result = 0, lost_points = 0;
+	test_chdir_path(&ntests, &lost_points);
+
+	ntests++;
+	result = chdir_empty();
+	handle_result(result, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
 
diff --git a/userland/testbin/badcall/bad_close.c b/userland/testbin/badcall/bad_close.c
index 6d70e66..3900200 100644
--- a/userland/testbin/badcall/bad_close.c
+++ b/userland/testbin/badcall/bad_close.c
@@ -36,5 +36,9 @@
 void
 test_close(void)
 {
-	test_close_fd();
+	int ntests = 0, lost_points = 0;
+	test_close_fd(&ntests, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
diff --git a/userland/testbin/badcall/bad_dup2.c b/userland/testbin/badcall/bad_dup2.c
index db3a216..86a36c7 100644
--- a/userland/testbin/badcall/bad_dup2.c
+++ b/userland/testbin/badcall/bad_dup2.c
@@ -45,27 +45,29 @@
 #include "test.h"
 
 static
-void
+int
 dup2_fd2(int fd, const char *desc)
 {
-	int rv;
+	int rv, failure;
 
 	report_begin("%s", desc);
 	rv = dup2(STDIN_FILENO, fd);
-	report_check(rv, errno, EBADF);
+	failure = report_check(rv, errno, EBADF);
 
 	if (rv != -1) {
 		close(fd);	/* just in case */
 	}
+	return failure;
 }
 
 static
-void
+int
 dup2_self(void)
 {
 	struct stat sb;
 	int rv;
 	int testfd;
+	int failure;
 
 	/* use fd that isn't in use */
 	testfd = CLOSED_FD;
@@ -75,22 +77,23 @@ dup2_self(void)
 	rv = dup2(STDIN_FILENO, testfd);
 	if (rv == -1) {
 		report_result(rv, errno);
-		report_aborted();
-		return;
+		report_aborted(&failure);
+		return failure;
 	}
 
 	report_begin("dup2 to same fd");
 	rv = dup2(testfd, testfd);
 	if (rv == testfd) {
-		report_passed();
+		report_passed(&failure);
 	}
 	else if (rv<0) {
 		report_result(rv, errno);
-		report_failure();
+		report_failure(&failure);
 	}
 	else {
 		report_warnx("returned %d instead", rv);
-		report_failure();
+		report_failure(&failure);
+		failure = FAILED;
 	}
 
 	report_begin("fstat fd after dup2 to itself");
@@ -100,43 +103,60 @@ dup2_self(void)
 	}
 	report_result(rv, errno);
 	if (rv==0) {
-		report_passed();
+		report_passed(&failure);
 	}
 	else if (errno != ENOSYS) {
-		report_failure();
+		report_failure(&failure);
 	}
 	else {
-		report_skipped();
+		report_skipped(&failure);
 		/* no support for fstat; try lseek */
 		report_begin("lseek fd after dup2 to itself");
 		rv = lseek(testfd, 0, SEEK_CUR);
 		report_result(rv, errno);
 		if (rv==0 || (rv==-1 && errno==ESPIPE)) {
-			report_passed();
+			report_passed(&failure);
 		}
 		else {
-			report_failure();
+			report_failure(&failure);
 		}
 	}
 
 	close(testfd);
+	return failure;
 }
 
 void
 test_dup2(void)
 {
+	int ntests = 0, failure, lost_points = 0;
 	/* This does the first fd. */
-	test_dup2_fd();
+	test_dup2_fd(&ntests, &lost_points);
 
 	/* Any interesting cases added here should also go in common_fds.c */
-	dup2_fd2(-1, "dup2 to -1");
-	dup2_fd2(-5, "dup2 to -5");
-	dup2_fd2(IMPOSSIBLE_FD, "dup2 to impossible fd");
+	ntests++;
+	failure = dup2_fd2(-1, "dup2 to -1");
+	handle_result(failure, &lost_points);
+
+	ntests++;
+	failure = dup2_fd2(-5, "dup2 to -5");
+	handle_result(failure, &lost_points);
+
+	ntests++;
+	failure = dup2_fd2(IMPOSSIBLE_FD, "dup2 to impossible fd");
+	handle_result(failure, &lost_points);
 #ifdef OPEN_MAX
-	dup2_fd2(OPEN_MAX, "dup2 to OPEN_MAX");
+	ntests++;
+	failure = dup2_fd2(OPEN_MAX, "dup2 to OPEN_MAX");
+	handle_result(failure, &lost_points);
 #else
 	warnx("Warning: OPEN_MAX not defined - test skipped");
 #endif
 
-	dup2_self();
+	ntests++;
+	failure = dup2_self();
+	handle_result(failure, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
diff --git a/userland/testbin/badcall/bad_execv.c b/userland/testbin/badcall/bad_execv.c
index 24ad1cb..0880e72 100644
--- a/userland/testbin/badcall/bad_execv.c
+++ b/userland/testbin/badcall/bad_execv.c
@@ -32,6 +32,7 @@
  */
 
 #include <sys/types.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <errno.h>
@@ -42,7 +43,7 @@
 
 static
 int
-exec_common_fork(void)
+exec_common_fork(int *result)
 {
 	int pid, rv, status, err;
 
@@ -56,7 +57,7 @@ exec_common_fork(void)
 		err = errno;
 		report_begin("forking for test");
 		report_result(pid, err);
-		report_aborted();
+		report_aborted(result);
 		return -1;
 	}
 
@@ -70,10 +71,11 @@ exec_common_fork(void)
 		err = errno;
 		report_begin("waiting for test subprocess");
 		report_result(rv, err);
-		report_failure();
+		report_failure(result);
 		return -1;
 	}
 	if (WIFEXITED(status) && WEXITSTATUS(status) == MAGIC_STATUS) {
+		*result = SUCCESS;
 		return 1;
 	}
 	/* Oops... */
@@ -84,98 +86,134 @@ exec_common_fork(void)
 	else {
 		report_warnx("exit %d", WEXITSTATUS(status));
 	}
-	report_failure();
+	report_failure(result);
 	return -1;
 }
 
 static
-void
+int
 exec_badprog(const void *prog, const char *desc)
 {
 	int rv;
+	int result;
 	char *args[2];
 	args[0] = (char *)"foo";
 	args[1] = NULL;
 
-	if (exec_common_fork() != 0) {
-		return;
+	if (exec_common_fork(&result) != 0) {
+		return result;
 	}
 
 	report_begin(desc);
 	rv = execv(prog, args);
-	report_check(rv, errno, EFAULT);
-	exit(MAGIC_STATUS);
+	result = report_check(rv, errno, EFAULT);
+	int code = result ? result : MAGIC_STATUS;
+	exit(code);
 }
 
 static
-void
+int
 exec_emptyprog(void)
 {
 	int rv;
+	int result;
 	char *args[2];
 	args[0] = (char *)"foo";
 	args[1] = NULL;
 
-	if (exec_common_fork() != 0) {
-		return;
+	if (exec_common_fork(&result) != 0) {
+		return result;
 	}
 
 	report_begin("exec the empty string");
 	rv = execv("", args);
-	report_check2(rv, errno, EINVAL, EISDIR);
-	exit(MAGIC_STATUS);
+	result = report_check2(rv, errno, EINVAL, EISDIR);
+	int code = result ? result : MAGIC_STATUS;
+	exit(code);
 }
 
 static
-void
+int
 exec_badargs(void *args, const char *desc)
 {
 	int rv;
-
-	if (exec_common_fork() != 0) {
-		return;
+	int result;
+	if (exec_common_fork(&result) != 0) {
+		return result;
 	}
 
 	report_begin(desc);
 	rv = execv("/bin/true", args);
-	report_check(rv, errno, EFAULT);
-	exit(MAGIC_STATUS);
+	result = report_check(rv, errno, EFAULT);
+	int code = result ? result : MAGIC_STATUS;
+	exit(code);
 }
 
 static
-void
+int
 exec_onearg(void *ptr, const char *desc)
 {
 	int rv;
+	int result;
 
 	char *args[3];
 	args[0] = (char *)"foo";
 	args[1] = (char *)ptr;
 	args[2] = NULL;
 
-	if (exec_common_fork() != 0) {
-		return;
+	if (exec_common_fork(&result) != 0) {
+		return result;
 	}
 
 	report_begin(desc);
 	rv = execv("/bin/true", args);
-	report_check(rv, errno, EFAULT);
-	exit(MAGIC_STATUS);
+	result = report_check(rv, errno, EFAULT);
+	int code = result ? result : MAGIC_STATUS;
+	exit(code);
+
 }
 
 void
 test_execv(void)
 {
-	exec_badprog(NULL, "exec with NULL program");
-	exec_badprog(INVAL_PTR, "exec with invalid pointer program");
-	exec_badprog(KERN_PTR, "exec with kernel pointer program");
+	int ntests = 0, result = 0, lost_points = 0;
+	ntests++;
+	result = exec_badprog(NULL, "exec with NULL program");
+	handle_result(result, &lost_points);
 
-	exec_emptyprog();
+	ntests++;
+	result = exec_badprog(INVAL_PTR, "exec with invalid pointer program");
+	handle_result(result, &lost_points);
 
-	exec_badargs(NULL, "exec with NULL arglist");
-	exec_badargs(INVAL_PTR, "exec with invalid pointer arglist");
-	exec_badargs(KERN_PTR, "exec with kernel pointer arglist");
+	ntests++;
+	result = exec_badprog(KERN_PTR, "exec with kernel pointer program");
+	handle_result(result, &lost_points);
 
-	exec_onearg(INVAL_PTR, "exec with invalid pointer arg");
-	exec_onearg(KERN_PTR, "exec with kernel pointer arg");
+	ntests++;
+	result = exec_emptyprog();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = exec_badargs(NULL, "exec with NULL arglist");
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = exec_badargs(INVAL_PTR, "exec with invalid pointer arglist");
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = exec_badargs(KERN_PTR, "exec with kernel pointer arglist");
+	handle_result(result, &lost_points);
+
+
+	ntests++;
+	result = exec_onearg(INVAL_PTR, "exec with invalid pointer arg");
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = exec_onearg(KERN_PTR, "exec with kernel pointer arg");
+	handle_result(result, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
diff --git a/userland/testbin/badcall/bad_fsync.c b/userland/testbin/badcall/bad_fsync.c
index fd67384..6322a99 100644
--- a/userland/testbin/badcall/bad_fsync.c
+++ b/userland/testbin/badcall/bad_fsync.c
@@ -36,6 +36,11 @@
 void
 test_fsync(void)
 {
-	test_fsync_fd();
+	int ntests = 0, lost_points = 0;
+
+	test_fsync_fd(&ntests, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
 
diff --git a/userland/testbin/badcall/bad_ftruncate.c b/userland/testbin/badcall/bad_ftruncate.c
index f88d7c8..cf21fff 100644
--- a/userland/testbin/badcall/bad_ftruncate.c
+++ b/userland/testbin/badcall/bad_ftruncate.c
@@ -44,52 +44,67 @@
 #include "test.h"
 
 static
-void
+int
 ftruncate_fd_device(void)
 {
 	int rv, fd;
+	int result;
 
 	report_begin("ftruncate on device");
 
 	fd = open("null:", O_RDWR);
 	if (fd<0) {
 		report_warn("opening null: failed");
-		report_aborted();
-		return;
+		report_aborted(&result);
+		return result;
 	}
 
 	rv = ftruncate(fd, 6);
-	report_check(rv, errno, EINVAL);
+	result = report_check(rv, errno, EINVAL);
 
 	close(fd);
+	return result;
 }
 
 static
-void
+int
 ftruncate_size_neg(void)
 {
 	int rv, fd;
+	int result;
 
 	report_begin("ftruncate to negative size");
 
 	fd = open_testfile(NULL);
 	if (fd<0) {
-		report_aborted();
-		return;
+		report_aborted(&result);
+		return result;
 	}
 
 	rv = ftruncate(fd, -60);
-	report_check(rv, errno, EINVAL);
+	result = report_check(rv, errno, EINVAL);
 
 	close(fd);
 	remove(TESTFILE);
+	return result;
 }
 
 void
 test_ftruncate(void)
 {
-	test_ftruncate_fd();
+	int ntests = 0, lost_points = 0;
+	int result;
 
-	ftruncate_fd_device();
-	ftruncate_size_neg();
+	test_ftruncate_fd(&ntests, &lost_points);
+
+	ntests++;
+	result = ftruncate_fd_device();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = ftruncate_size_neg();
+	handle_result(result, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
diff --git a/userland/testbin/badcall/bad_getcwd.c b/userland/testbin/badcall/bad_getcwd.c
index 4f94ba1..4dacfa1 100644
--- a/userland/testbin/badcall/bad_getcwd.c
+++ b/userland/testbin/badcall/bad_getcwd.c
@@ -36,5 +36,9 @@
 void
 test_getcwd(void)
 {
-	test_getcwd_buf();
+	int ntests = 0, lost_points = 0;
+	test_getcwd_buf(&ntests, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
diff --git a/userland/testbin/badcall/bad_getdirentry.c b/userland/testbin/badcall/bad_getdirentry.c
index 02806d2..5d8f425 100644
--- a/userland/testbin/badcall/bad_getdirentry.c
+++ b/userland/testbin/badcall/bad_getdirentry.c
@@ -36,6 +36,11 @@
 void
 test_getdirentry(void)
 {
-	test_getdirentry_fd();
-	test_getdirentry_buf();
+	int ntests = 0, lost_points = 0;
+
+	test_getdirentry_fd(&ntests, &lost_points);
+	test_getdirentry_buf(&ntests, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
diff --git a/userland/testbin/badcall/bad_ioctl.c b/userland/testbin/badcall/bad_ioctl.c
index 8ce38bc..f61add5 100644
--- a/userland/testbin/badcall/bad_ioctl.c
+++ b/userland/testbin/badcall/bad_ioctl.c
@@ -41,30 +41,34 @@
 #include "test.h"
 
 static
-void
+int
 one_ioctl_badbuf(int fd, int code, const char *codename,
 		 void *ptr, const char *ptrdesc)
 {
 	int rv;
+	int result;
 
 	report_begin("ioctl %s with %s", codename, ptrdesc);
 	rv = ioctl(fd, code, ptr);
-	report_check(rv, errno, EFAULT);
+	result = report_check(rv, errno, EFAULT);
+	return result;
 }
 
 static
-void
+int
 any_ioctl_badbuf(int fd, int code, const char *codename)
 {
-	one_ioctl_badbuf(fd, code, codename, NULL, "NULL pointer");
-	one_ioctl_badbuf(fd, code, codename, INVAL_PTR, "invalid pointer");
-	one_ioctl_badbuf(fd, code, codename, KERN_PTR, "kernel pointer");
+	int result;
+	result = one_ioctl_badbuf(fd, code, codename, NULL, "NULL pointer");
+	result |= one_ioctl_badbuf(fd, code, codename, INVAL_PTR, "invalid pointer");
+	result |= one_ioctl_badbuf(fd, code, codename, KERN_PTR, "kernel pointer");
+	return result;
 }
 
 #define IOCTL(fd, sym) any_ioctl_badbuf(fd, sym, #sym)
 
 static
-void
+int
 ioctl_badbuf(void)
 {
 	/*
@@ -79,25 +83,39 @@ ioctl_badbuf(void)
 
 	/* suppress gcc warning */
 	(void)any_ioctl_badbuf;
+	return 0;
 }
 
 static
-void
+int
 ioctl_badcode(void)
 {
 	int rv;
+	int result;
 
 	report_begin("invalid ioctl");
 	rv = ioctl(STDIN_FILENO, NONEXIST_IOCTL, NULL);
-	report_check(rv, errno, EIOCTL);
+	result = report_check(rv, errno, EIOCTL);
+	return result;
 }
 
 void
 test_ioctl(void)
 {
-	test_ioctl_fd();
+	int ntests = 0, lost_points = 0;
+	int result;
+
+	test_ioctl_fd(&ntests, &lost_points);
 
 	/* Since we don't actually define any ioctls, this is not meaningful */
-	ioctl_badcode();
-	ioctl_badbuf();
+	ntests++;
+	result = ioctl_badcode();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = ioctl_badbuf();
+	handle_result(result, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
diff --git a/userland/testbin/badcall/bad_link.c b/userland/testbin/badcall/bad_link.c
index 63ecc15..82e0314 100644
--- a/userland/testbin/badcall/bad_link.c
+++ b/userland/testbin/badcall/bad_link.c
@@ -37,52 +37,70 @@
 #include "test.h"
 
 static
-void
+int
 link_dir(void)
 {
 	int rv;
+	int result;
 
 	report_begin("hard link of .");
 	rv = link(".", TESTDIR);
-	report_check(rv, errno, EINVAL);
+	result = report_check(rv, errno, EINVAL);
 	if (rv==0) {
 		/* this might help recover... maybe */
 		remove(TESTDIR);
 	}
+	return result;
 }
 
 static
-void
+int
 link_empty1(void)
 {
 	int rv;
 
 	report_begin("hard link of empty string");
 	rv = link("", TESTDIR);
-	report_check(rv, errno, EINVAL);
+	return report_check(rv, errno, EINVAL);
 }
 
 static
-void
+int
 link_empty2(void)
 {
 	int rv;
-
+	int result = FAILED;
 	report_begin("hard link to empty string");
 	if (create_testdir()<0) {
 		/*report_aborted();*/ /* XXX in create_testdir */
-		return;
+		return result;
 	}
 	rv = link(TESTDIR, "");
-	report_check(rv, errno, EINVAL);
+	result = report_check(rv, errno, EINVAL);
 	rmdir(TESTDIR);
+	return result;
 }
 
 void
 test_link(void)
 {
-	test_link_paths();
-	link_dir();
-	link_empty1();
-	link_empty2();
+	int ntests = 0, lost_points = 0;
+	int result;
+
+	test_link_paths(&ntests, &lost_points);
+
+	ntests++;
+	result = link_dir();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = link_empty1();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = link_empty2();
+	handle_result(result, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
diff --git a/userland/testbin/badcall/bad_lseek.c b/userland/testbin/badcall/bad_lseek.c
index a521754..b2b968c 100644
--- a/userland/testbin/badcall/bad_lseek.c
+++ b/userland/testbin/badcall/bad_lseek.c
@@ -44,34 +44,38 @@
 #include "test.h"
 
 static
-void
+int
 lseek_fd_device(void)
 {
 	int fd, rv;
+	int result;
 
 	report_begin("lseek on device");
 
 	fd = open("null:", O_RDONLY);
 	if (fd<0) {
 		report_warn("opening null: failed");
-		report_aborted();
-		return;
+		report_aborted(&result);
+		return result;
 	}
 
 	rv = lseek(fd, 309, SEEK_SET);
-	report_check(rv, errno, ESPIPE);
+	result = report_check(rv, errno, ESPIPE);
 
 	close(fd);
+
+	return result;
 }
 
 static
-void
+int
 lseek_file_stdin(void)
 {
 	int fd, fd2, rv, status;
 	const char slogan[] = "There ain't no such thing as a free lunch";
 	size_t len = strlen(slogan);
 	pid_t pid;
+	int result = 0;
 
 	report_begin("lseek stdin when open on file");
 
@@ -79,27 +83,27 @@ lseek_file_stdin(void)
 	pid = fork();
 	if (pid<0) {
 		report_warn("fork failed");
-		report_aborted();
-		return;
+		report_aborted(&result);
+		return result;
 	}
 	else if (pid!=0) {
 		/* parent */
 		rv = waitpid(pid, &status, 0);
 		if (rv<0) {
 			report_warn("waitpid failed");
-			report_aborted();
+			report_aborted(&result);
 		}
 		if (WIFSIGNALED(status)) {
 			report_warnx("subprocess exited with signal %d",
 				     WTERMSIG(status));
-			report_aborted();
+			report_aborted(&result);
 		}
 		else if (WIFEXITED(status) && WEXITSTATUS(status) != 0) {
 			report_warnx("subprocess exited with code %d",
 				     WEXITSTATUS(status));
-			report_aborted();
+			report_aborted(&result);
 		}
-		return;
+		return result;
 	}
 
 	/* child */
@@ -146,133 +150,159 @@ lseek_file_stdin(void)
 	}
 
 	/* blah */
-	report_skipped();
+	report_skipped(&result);
 
 	rv = lseek(STDIN_FILENO, 0, SEEK_SET);
 	report_begin("try 1: SEEK_SET");
-	report_check(rv, errno, 0);
+	result = report_check(rv, errno, 0);
 
 	rv = lseek(STDIN_FILENO, 0, SEEK_END);
 	report_begin("try 2: SEEK_END");
-	report_check(rv, errno, 0);
+	result = report_check(rv, errno, 0);
 
 	remove(TESTFILE);
 	_exit(0);
 }
 
 static
-void
+int
 lseek_loc_negative(void)
 {
 	int fd, rv;
+	int result;
 
 	report_begin("lseek to negative offset");
 
 	fd = open_testfile(NULL);
 	if (fd<0) {
-		report_aborted();
-		return;
+		report_aborted(&result);
+		return result;
 	}
 
 	rv = lseek(fd, -309, SEEK_SET);
-	report_check(rv, errno, EINVAL);
+	result = report_check(rv, errno, EINVAL);
 
 	close(fd);
 	remove(TESTFILE);
+
+	return result;
 }
 
 static
-void
+int
 lseek_whence_inval(void)
 {
 	int fd, rv;
+	int result;
 
 	report_begin("lseek with invalid whence code");
 
 	fd = open_testfile(NULL);
 	if (fd<0) {
-		report_aborted();
-		return;
+		report_aborted(&result);
+		return result;
 	}
 
 	rv = lseek(fd, 0, 3594);
-	report_check(rv, errno, EINVAL);
+	result = report_check(rv, errno, EINVAL);
 
 	close(fd);
 	remove(TESTFILE);
+	return result;
 }
 
 static
-void
+int
 lseek_loc_pasteof(void)
 {
 	const char *message = "blahblah";
 	int fd;
 	off_t pos;
+	int result;
 
 	report_begin("seek past/to EOF");
 
 	fd = open_testfile(message);
 	if (fd<0) {
-		report_aborted();
-		return;
+		report_aborted(&result);
+		return result;
 	}
 
 	pos = lseek(fd, 5340, SEEK_SET);
 	if (pos == -1) {
 		report_warn("lseek past EOF failed");
-		report_failure();
+		report_failure(&result);
 		goto out;
 	}
 	if (pos != 5340) {
 		report_warnx("lseek to 5340 got offset %lld", (long long) pos);
-		report_failure();
+		report_failure(&result);
 		goto out;
 	}
 
 	pos = lseek(fd, -50, SEEK_CUR);
 	if (pos == -1) {
 		report_warn("small seek beyond EOF failed");
-		report_failure();
+		report_failure(&result);
 		goto out;
 	}
 	if (pos != 5290) {
 		report_warnx("SEEK_CUR to 5290 got offset %lld",
 			     (long long) pos);
-		report_failure();
+		report_failure(&result);
 		goto out;
 	}
 
 	pos = lseek(fd, 0, SEEK_END);
 	if (pos == -1) {
 		report_warn("seek to EOF failed");
-		report_failure();
+		report_failure(&result);
 		goto out;
 	}
 
 	if (pos != (off_t) strlen(message)) {
 		report_warnx("seek to EOF got %lld (should be %zu)",
 			     (long long) pos, strlen(message));
-		report_failure();
+		report_failure(&result);
 		goto out;
 	}
 
-	report_passed();
+	report_passed(&result);
 
     out:
 	close(fd);
 	remove(TESTFILE);
-	return;
+	return result;
 }
 
 void
 test_lseek(void)
 {
-	test_lseek_fd();
+	int ntests = 0, lost_points = 0;
+	int result;
 
-	lseek_fd_device();
-	lseek_file_stdin();
-	lseek_loc_negative();
-	lseek_loc_pasteof();
-	lseek_whence_inval();
+	test_lseek_fd(&ntests, &lost_points);
+
+	ntests++;
+	result = lseek_fd_device();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = lseek_file_stdin();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = lseek_loc_negative();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = lseek_loc_pasteof();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = lseek_whence_inval();
+	handle_result(result, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
diff --git a/userland/testbin/badcall/bad_mkdir.c b/userland/testbin/badcall/bad_mkdir.c
index 4500dbd..5b79042 100644
--- a/userland/testbin/badcall/bad_mkdir.c
+++ b/userland/testbin/badcall/bad_mkdir.c
@@ -44,44 +44,58 @@
 #include "test.h"
 
 static
-void
+int
 mkdir_dot(void)
 {
 	int rv;
 
 	report_begin("mkdir .");
 	rv = mkdir(".", 0775);
-	report_check(rv, errno, EEXIST);
+	return report_check(rv, errno, EEXIST);
 }
 
 static
-void
+int
 mkdir_dotdot(void)
 {
 	int rv;
 
 	report_begin("mkdir ..");
 	rv = mkdir("..", 0775);
-	report_check(rv, errno, EEXIST);
+	return report_check(rv, errno, EEXIST);
 }
 
 static
-void
+int
 mkdir_empty(void)
 {
 	int rv;
 
 	report_begin("mkdir of empty string");
 	rv = mkdir("", 0775);
-	report_check(rv, errno, EINVAL);
+	return report_check(rv, errno, EINVAL);
 }
 
 void
 test_mkdir(void)
 {
-	test_mkdir_path();
+	int ntests = 0, lost_points = 0;
+	int result;
 
-	mkdir_dot();
+	test_mkdir_path(&ntests, &lost_points);
+
+	ntests++;
+	result = mkdir_dot();
+	handle_result(result, &lost_points);
+
+	ntests++;
 	mkdir_dotdot();
+	handle_result(result, &lost_points);
+
+	ntests++;
 	mkdir_empty();
+	handle_result(result, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
diff --git a/userland/testbin/badcall/bad_open.c b/userland/testbin/badcall/bad_open.c
index 5ce66cd..be3d508 100644
--- a/userland/testbin/badcall/bad_open.c
+++ b/userland/testbin/badcall/bad_open.c
@@ -44,35 +44,48 @@
 #include "test.h"
 
 static
-void
+int
 open_badflags(void)
 {
 	int fd;
 
 	report_begin("open null: with bad flags");
 	fd = open("null:", 309842);
-	report_check(fd, errno, EINVAL);
+	return report_check(fd, errno, EINVAL);
 }
 
 static
-void
+int
 open_empty(void)
 {
 	int rv;
+	int result;
 
 	report_begin("open empty string");
 	rv = open("", O_RDONLY);
-	report_check2(rv, errno, 0, EINVAL);
+	result = report_check2(rv, errno, 0, EINVAL);
 	if (rv>=0) {
 		close(rv);
 	}
+	return result;
 }
 
 void
 test_open(void)
 {
-	test_open_path();
+	int ntests = 0, lost_points = 0;
+	int result;
 
-	open_badflags();
-	open_empty();
+	test_open_path(&ntests, &lost_points);
+
+	ntests++;
+	result = open_badflags();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = open_empty();
+	handle_result(result, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
diff --git a/userland/testbin/badcall/bad_pipe.c b/userland/testbin/badcall/bad_pipe.c
index 350c3d8..27f3f68 100644
--- a/userland/testbin/badcall/bad_pipe.c
+++ b/userland/testbin/badcall/bad_pipe.c
@@ -44,22 +44,23 @@
 #include "test.h"
 
 static
-void
+int
 pipe_badptr(void *ptr, const char *desc)
 {
 	int rv;
 
 	report_begin("%s", desc);
 	rv = pipe(ptr);
-	report_check(rv, errno, EFAULT);
+	return report_check(rv, errno, EFAULT);
 }
 
 static
-void
+int
 pipe_unaligned(void)
 {
 	int fds[3], rv;
 	char *ptr;
+	int result;
 
 	report_begin("pipe with unaligned pointer");
 
@@ -67,15 +68,32 @@ pipe_unaligned(void)
 	ptr++;
 
 	rv = pipe((int *)ptr);
-	report_survival(rv, errno);
+	report_survival(rv, errno, &result);
+	return result;
 }
 
 void
 test_pipe(void)
 {
-	pipe_badptr(NULL, "pipe with NULL pointer");
-	pipe_badptr(INVAL_PTR, "pipe with invalid pointer");
-	pipe_badptr(KERN_PTR, "pipe with kernel pointer");
+	int ntests = 0, lost_points = 0;
+	int result;
 
-	pipe_unaligned();
+	ntests++;
+	result = pipe_badptr(NULL, "pipe with NULL pointer");
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = pipe_badptr(INVAL_PTR, "pipe with invalid pointer");
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = pipe_badptr(KERN_PTR, "pipe with kernel pointer");
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = pipe_unaligned();
+	handle_result(result, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
diff --git a/userland/testbin/badcall/bad_read.c b/userland/testbin/badcall/bad_read.c
index c4e3215..3fdccf1 100644
--- a/userland/testbin/badcall/bad_read.c
+++ b/userland/testbin/badcall/bad_read.c
@@ -36,7 +36,13 @@
 void
 test_read(void)
 {
-	test_read_fd();
-	test_read_buf();
+	int ntests = 0, lost_points = 0;
+
+	test_read_fd(&ntests, &lost_points);
+	test_read_buf(&ntests, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
+
 }
 
diff --git a/userland/testbin/badcall/bad_readlink.c b/userland/testbin/badcall/bad_readlink.c
index 4399851..8682373 100644
--- a/userland/testbin/badcall/bad_readlink.c
+++ b/userland/testbin/badcall/bad_readlink.c
@@ -37,26 +37,28 @@
 #include "test.h"
 
 static
-void
+int
 readlink_file(void)
 {
 	char buf[128];
 	int fd, rv;
+	int result;
 
 	report_begin("readlink on file");
 	fd = open_testfile("the question contains an invalid assumption");
 	if (fd<0) {
-		report_aborted();
-		return;
+		report_aborted(&result);
+		return result;
 	}
 	close(fd);
 	rv = readlink(TESTFILE, buf, sizeof(buf));
-	report_check(rv, errno, EINVAL);
+	result = report_check(rv, errno, EINVAL);
 	remove(TESTFILE);
+	return result;
 }
 
 static
-void
+int
 readlink_dir(void)
 {
 	char buf[128];
@@ -64,11 +66,11 @@ readlink_dir(void)
 
 	report_begin("readlink on .");
 	rv = readlink(".", buf, sizeof(buf));
-	report_check(rv, errno, EISDIR);
+	return report_check(rv, errno, EISDIR);
 }
 
 static
-void
+int
 readlink_empty(void)
 {
 	char buf[128];
@@ -76,17 +78,31 @@ readlink_empty(void)
 
 	report_begin("readlink on empty string");
 	rv = readlink("", buf, sizeof(buf));
-	report_check2(rv, errno, EISDIR, EINVAL);
+	return report_check2(rv, errno, EISDIR, EINVAL);
 }
 
 void
 test_readlink(void)
 {
-	test_readlink_path();
-	test_readlink_buf();
+	int ntests = 0, lost_points = 0;
+	int result;
 
-	readlink_file();
-	readlink_dir();
-	readlink_empty();
+	test_readlink_path(&ntests, &lost_points);
+	test_readlink_buf(&ntests, &lost_points);
+
+	ntests++;
+	result = readlink_file();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = readlink_dir();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = readlink_empty();
+	handle_result(result, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
 
diff --git a/userland/testbin/badcall/bad_reboot.c b/userland/testbin/badcall/bad_reboot.c
index add8fb9..7318e45 100644
--- a/userland/testbin/badcall/bad_reboot.c
+++ b/userland/testbin/badcall/bad_reboot.c
@@ -44,19 +44,27 @@
 #include "test.h"
 
 static
-void
+int
 reboot_badflags(void)
 {
 	int rv;
 
-	printf("(This should not kill the system...)\n");
+	tprintf("(This should not kill the system...)\n");
 	report_begin("reboot with invalid flags");
 	rv = reboot(15353);
-	report_check(rv, errno, EINVAL);
+	return report_check(rv, errno, EINVAL);
 }
 
 void
 test_reboot(void)
 {
-	reboot_badflags();
+	int ntests = 0, lost_points = 0;
+	int result;
+
+	ntests++;
+	result = reboot_badflags();
+	handle_result(result, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
diff --git a/userland/testbin/badcall/bad_remove.c b/userland/testbin/badcall/bad_remove.c
index 02621ac..d971045 100644
--- a/userland/testbin/badcall/bad_remove.c
+++ b/userland/testbin/badcall/bad_remove.c
@@ -44,63 +44,83 @@
 #include "test.h"
 
 static
-void
+int
 remove_dir(void)
 {
 	int rv;
+	int result = FAILED;
 
 	report_begin("remove() on a directory");
 
 	if (create_testdir() < 0) {
 		/*report_aborted();*/ /* XXX in create_testdir */
-		return;
+		return result;
 	}
 
 	rv = remove(TESTDIR);
-	report_check(rv, errno, EISDIR);
+	result = report_check(rv, errno, EISDIR);
 	rmdir(TESTDIR);
+
+	return result;
 }
 
 static
-void
+int
 remove_dot(void)
 {
 	int rv;
 
 	report_begin("remove() on .");
 	rv = remove(".");
-	report_check2(rv, errno, EISDIR, EINVAL);
+	return report_check2(rv, errno, EISDIR, EINVAL);
 }
 
 static
-void
+int
 remove_dotdot(void)
 {
 	int rv;
 
 	report_begin("remove() on ..");
 	rv = remove("..");
-	report_check2(rv, errno, EISDIR, EINVAL);
+	return report_check2(rv, errno, EISDIR, EINVAL);
 }
 
 static
-void
+int
 remove_empty(void)
 {
 	int rv;
 
 	report_begin("remove() on empty string");
 	rv = remove("");
-	report_check2(rv, errno, EISDIR, EINVAL);
+	return report_check2(rv, errno, EISDIR, EINVAL);
 }
 
 void
 test_remove(void)
 {
-	test_remove_path();
+	int ntests = 0, lost_points = 0;
+	int result;
 
-	remove_dir();
-	remove_dot();
-	remove_dotdot();
-	remove_empty();
+	test_remove_path(&ntests, &lost_points);
+
+	ntests++;
+	result = remove_dir();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = remove_dot();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = remove_dotdot();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = remove_empty();
+	handle_result(result, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
diff --git a/userland/testbin/badcall/bad_rename.c b/userland/testbin/badcall/bad_rename.c
index 814dcb6..355f983 100644
--- a/userland/testbin/badcall/bad_rename.c
+++ b/userland/testbin/badcall/bad_rename.c
@@ -37,75 +37,100 @@
 #include "test.h"
 
 static
-void
+int
 rename_dot(void)
 {
 	int rv;
+	int result;
 
 	report_begin("rename .");
 
 	rv = rename(".", TESTDIR);
-	report_check(rv, errno, EINVAL);
+	result = report_check(rv, errno, EINVAL);
 	if (rv==0) {
 		/* oops... put it back */
 		rename(TESTDIR, ".");
 	}
+	return result;
 }
 
 static
-void
+int
 rename_dotdot(void)
 {
 	int rv;
+	int result;
 
 	report_begin("rename ..");
 	rv = rename("..", TESTDIR);
-	report_check(rv, errno, EINVAL);
+	result = report_check(rv, errno, EINVAL);
 	if (rv==0) {
 		/* oops... put it back */
 		rename(TESTDIR, "..");
 	}
+	return result;
 }
 
 static
-void
+int
 rename_empty1(void)
 {
 	int rv;
+	int result;
 
 	report_begin("rename empty string");
 	rv = rename("", TESTDIR);
-	report_check2(rv, errno, EISDIR, EINVAL);
+	result = report_check2(rv, errno, EISDIR, EINVAL);
 	if (rv==0) {
 		/* don't try to remove it */
 		rename(TESTDIR, TESTDIR "-foo");
 	}
+	return result;
 }
 
 static
-void
+int
 rename_empty2(void)
 {
 	int rv;
+	int result = FAILED;
 
 	report_begin("rename to empty string");
 	if (create_testdir()<0) {
 		/*report_aborted();*/ /* XXX in create_testdir */
-		return;
+		return result;
 	}
 	rv = rename(TESTDIR, "");
-	report_check2(rv, errno, EISDIR, EINVAL);
+	result = report_check2(rv, errno, EISDIR, EINVAL);
 	rmdir(TESTDIR);
+	return result;
 }
 
 void
 test_rename(void)
 {
-	test_rename_paths();
+	int ntests = 0, lost_points = 0;
+	int result;
 
-	rename_dot();
-	rename_dotdot();
-	rename_empty1();
-	rename_empty2();
+	test_rename_paths(&ntests, &lost_points);
+
+	ntests++;
+	result = rename_dot();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = rename_dotdot();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = rename_empty1();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = rename_empty2();
+	handle_result(result, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
 
diff --git a/userland/testbin/badcall/bad_rmdir.c b/userland/testbin/badcall/bad_rmdir.c
index b1f6883..98e0080 100644
--- a/userland/testbin/badcall/bad_rmdir.c
+++ b/userland/testbin/badcall/bad_rmdir.c
@@ -44,61 +44,83 @@
 #include "test.h"
 
 static
-void
+int
 rmdir_file(void)
 {
 	int rv;
+	int result;
 
 	report_begin("rmdir a file");
 	if (create_testfile()<0) {
-		report_aborted();
-		return;
+		report_aborted(&result);
+		return result;
 	}
 	rv = rmdir(TESTFILE);
-	report_check(rv, errno, ENOTDIR);
+	result = report_check(rv, errno, ENOTDIR);
 	remove(TESTFILE);
+
+	return result;
 }
 
 static
-void
+int
 rmdir_dot(void)
 {
 	int rv;
+	int result;
 
 	report_begin("rmdir .");
 	rv = rmdir(".");
-	report_check(rv, errno, EINVAL);
+	result = report_check(rv, errno, EINVAL);
+	return result;
 }
 
 static
-void
+int
 rmdir_dotdot(void)
 {
 	int rv;
 
 	report_begin("rmdir ..");
 	rv = rmdir("..");
-	report_check2(rv, errno, EINVAL, ENOTEMPTY);
+	return report_check2(rv, errno, EINVAL, ENOTEMPTY);
 }
 
 static
-void
+int
 rmdir_empty(void)
 {
 	int rv;
 
 	report_begin("rmdir empty string");
 	rv = rmdir("");
-	report_check(rv, errno, EINVAL);
+	return report_check(rv, errno, EINVAL);
 }
 
 void
 test_rmdir(void)
 {
-	test_rmdir_path();
+	int ntests = 0, lost_points = 0;
+	int result;
 
-	rmdir_file();
-	rmdir_dot();
-	rmdir_dotdot();
-	rmdir_empty();
+	test_rmdir_path(&ntests, &lost_points);
+
+	ntests++;
+	result = rmdir_file();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = rmdir_dot();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = rmdir_dotdot();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = rmdir_empty();
+	handle_result(result, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
diff --git a/userland/testbin/badcall/bad_sbrk.c b/userland/testbin/badcall/bad_sbrk.c
index b482a92..dc4f351 100644
--- a/userland/testbin/badcall/bad_sbrk.c
+++ b/userland/testbin/badcall/bad_sbrk.c
@@ -59,7 +59,7 @@ try_sbrk(long val)
 }
 
 static
-void
+int
 enforce_sbrk(long val, const char *desc, int err)
 {
 	int result;
@@ -67,59 +67,79 @@ enforce_sbrk(long val, const char *desc, int err)
 	report_begin("sbrk %s", desc);
 
 	result = try_sbrk(val);
-	report_check(result, errno, err);
+	return report_check(result, errno, err);
 }
 
 static
-void
+int
 sbrk_bigpos(void)
 {
-	enforce_sbrk(4096*1024*256, "huge positive", ENOMEM);
+	return enforce_sbrk(1024*1024*1024 + (1024*1024*1024 - 4096*17), "huge positive", ENOMEM);
 }
 
 static
-void
+int
 sbrk_bigneg(void)
 {
-	enforce_sbrk(-4096*1024*256, "huge negative", EINVAL);
+	return enforce_sbrk(-4096*1024*256, "huge negative", EINVAL);
 }
 
 static
-void
+int
 sbrk_neg(void)
 {
-	enforce_sbrk(-8192, "too-large negative", EINVAL);
+	return enforce_sbrk(-8192, "too-large negative", EINVAL);
 }
 
 static
-void
+int
 sbrk_unalignedpos(void)
 {
 	int result;
 
 	report_begin("sbrk unaligned positive");
 	result = try_sbrk(17);
-	report_check2(result, errno, 0, EINVAL);
+	return report_check2(result, errno, 0, EINVAL);
 }
 
 static
-void
+int
 sbrk_unalignedneg(void)
 {
 	int result;
 
 	report_begin("sbrk unaligned negative");
 	result = try_sbrk(-17);
-	report_check2(result, errno, 0, EINVAL);
+	return report_check2(result, errno, 0, EINVAL);
 }
 
 void
 test_sbrk(void)
 {
-	sbrk_neg();
-	sbrk_bigpos();
-	sbrk_bigneg();
-	sbrk_unalignedpos();
-	sbrk_unalignedneg();
+	int ntests = 0, lost_points = 0;
+	int result;
+
+	ntests++;
+	result = sbrk_neg();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = sbrk_bigpos();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = sbrk_bigneg();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = sbrk_unalignedpos();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = sbrk_unalignedneg();
+	handle_result(result, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
 
diff --git a/userland/testbin/badcall/bad_stat.c b/userland/testbin/badcall/bad_stat.c
index 726f9b1..871d586 100644
--- a/userland/testbin/badcall/bad_stat.c
+++ b/userland/testbin/badcall/bad_stat.c
@@ -67,7 +67,7 @@ badbuf_stat(struct stat *sb)
 }
 
 static
-void
+int
 common_badbuf(int (*statfunc)(struct stat *), void *ptr,
 	      const char *call, const char *ptrdesc)
 {
@@ -75,22 +75,24 @@ common_badbuf(int (*statfunc)(struct stat *), void *ptr,
 
 	report_begin("%s with %s buf", call, ptrdesc);
 	rv = statfunc(ptr);
-	report_check(rv, errno, EFAULT);
+	return report_check(rv, errno, EFAULT);
 }
 
 static
-void
+int
 any_badbuf(int (*statfunc)(struct stat *), const char *call)
 {
-	common_badbuf(statfunc, NULL, call, "NULL");
-	common_badbuf(statfunc, INVAL_PTR, call, "invalid pointer");
-	common_badbuf(statfunc, KERN_PTR, call, "kernel pointer");
+	int result;
+	result = common_badbuf(statfunc, NULL, call, "NULL");
+	result |= common_badbuf(statfunc, INVAL_PTR, call, "invalid pointer");
+	result |= common_badbuf(statfunc, KERN_PTR, call, "kernel pointer");
+	return result;
 }
 
 ////////////////////////////////////////////////////////////
 
 static
-void
+int
 any_empty(int (*statfunc)(const char *, struct stat *), const char *call)
 {
 	struct stat sb;
@@ -98,7 +100,7 @@ any_empty(int (*statfunc)(const char *, struct stat *), const char *call)
 
 	report_begin("%s on empty string", call);
 	rv = statfunc("", &sb);
-	report_check2(rv, errno, 0, EINVAL);
+	return report_check2(rv, errno, 0, EINVAL);
 }
 
 ////////////////////////////////////////////////////////////
@@ -106,23 +108,56 @@ any_empty(int (*statfunc)(const char *, struct stat *), const char *call)
 void
 test_fstat(void)
 {
-	test_fstat_fd();
-	any_badbuf(badbuf_fstat, "fstat");
+	int ntests = 0, lost_points = 0;
+	int result;
+
+	test_fstat_fd(&ntests, &lost_points);
+
+	ntests++;
+	result = any_badbuf(badbuf_fstat, "fstat");
+	handle_result(result, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
 
 void
 test_lstat(void)
 {
-	test_lstat_path();
-	any_empty(lstat, "lstat");
-	any_badbuf(badbuf_lstat, "lstat");
+	int ntests = 0, lost_points = 0;
+	int result;
+
+	test_lstat_path(&ntests, &lost_points);
+
+	ntests++;
+	result = any_empty(lstat, "lstat");
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = any_badbuf(badbuf_lstat, "lstat");
+	handle_result(result, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
 
 void
 test_stat(void)
 {
-	test_stat_path();
-	any_empty(stat, "stat");
-	any_badbuf(badbuf_stat, "stat");
+	int ntests = 0, lost_points = 0;
+	int result;
+
+	test_stat_path(&ntests, &lost_points);
+
+	ntests++;
+	result = any_empty(stat, "stat");
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = any_badbuf(badbuf_stat, "stat");
+	handle_result(result, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
 
diff --git a/userland/testbin/badcall/bad_symlink.c b/userland/testbin/badcall/bad_symlink.c
index 68a3463..74c0526 100644
--- a/userland/testbin/badcall/bad_symlink.c
+++ b/userland/testbin/badcall/bad_symlink.c
@@ -37,32 +37,47 @@
 #include "test.h"
 
 static
-void
+int
 symlink_empty1(void)
 {
 	int rv;
+	int result;
 
 	report_begin("symlink -> empty string");
 	rv = symlink("", TESTLINK);
-	report_check2(rv, errno, 0, EINVAL);
+	result = report_check2(rv, errno, 0, EINVAL);
 	remove(TESTLINK);
+	return result;
 }
 
 static
-void
+int
 symlink_empty2(void)
 {
 	int rv;
 
 	report_begin("symlink named empty string");
 	rv = symlink("foo", "");
-	report_check(rv, errno, EINVAL);
+	return report_check(rv, errno, EINVAL);
 }
 
 void
 test_symlink(void)
 {
-	test_symlink_paths();
-	symlink_empty1();
-	symlink_empty2();
+	int ntests = 0, lost_points = 0;
+	int result;
+
+
+	test_symlink_paths(&ntests, &lost_points);
+
+	ntests++;
+	result = symlink_empty1();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = symlink_empty2();
+	handle_result(result, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
diff --git a/userland/testbin/badcall/bad_time.c b/userland/testbin/badcall/bad_time.c
index c5df61c..4474c9e 100644
--- a/userland/testbin/badcall/bad_time.c
+++ b/userland/testbin/badcall/bad_time.c
@@ -44,33 +44,49 @@
 #include "test.h"
 
 static
-void
+int
 time_badsecs(void *ptr, const char *desc)
 {
 	int rv;
 
 	report_begin("%s", desc);
 	rv = __time(ptr, NULL);
-	report_check(rv, errno, EFAULT);
+	return report_check(rv, errno, EFAULT);
 }
 
 static
-void
+int
 time_badnsecs(void *ptr, const char *desc)
 {
 	int rv;
 
 	report_begin("%s", desc);
 	rv = __time(NULL, ptr);
-	report_check(rv, errno, EFAULT);
+	return report_check(rv, errno, EFAULT);
 }
 
 void
 test_time(void)
 {
-	time_badsecs(INVAL_PTR, "__time with invalid seconds pointer");
-	time_badsecs(KERN_PTR, "__time with kernel seconds pointer");
+	int ntests = 0, lost_points = 0;
+	int result;
 
-	time_badnsecs(INVAL_PTR, "__time with invalid nsecs pointer");
-	time_badnsecs(KERN_PTR, "__time with kernel nsecs pointer");
+	ntests++;
+	result = time_badsecs(INVAL_PTR, "__time with invalid seconds pointer");
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = time_badsecs(KERN_PTR, "__time with kernel seconds pointer");
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = time_badnsecs(INVAL_PTR, "__time with invalid nsecs pointer");
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = time_badnsecs(KERN_PTR, "__time with kernel nsecs pointer");
+	handle_result(result, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
diff --git a/userland/testbin/badcall/bad_waitpid.c b/userland/testbin/badcall/bad_waitpid.c
index f9bbd0d..7af2196 100644
--- a/userland/testbin/badcall/bad_waitpid.c
+++ b/userland/testbin/badcall/bad_waitpid.c
@@ -42,7 +42,7 @@
 #include "test.h"
 
 static
-void
+int
 wait_badpid(pid_t pid, const char *desc)
 {
 	pid_t rv;
@@ -59,23 +59,24 @@ wait_badpid(pid_t pid, const char *desc)
 	else if (err == ENOSYS) {
 		report_saw_enosys();
 	}
-	report_check2(rv, err, ESRCH, ECHILD);
+	return report_check2(rv, err, ESRCH, ECHILD);
 }
 
 static
-void
+int
 wait_nullstatus(void)
 {
 	pid_t pid, rv;
 	int x;
+	int result;
 
 	report_begin("wait with NULL status");
 
 	pid = fork();
 	if (pid<0) {
 		report_warn("fork failed");
-		report_aborted();
-		return;
+		report_aborted(&result);
+		return result;
 	}
 	if (pid==0) {
 		exit(0);
@@ -83,50 +84,54 @@ wait_nullstatus(void)
 
 	/* POSIX explicitly says passing NULL for status is allowed */
 	rv = waitpid(pid, NULL, 0);
-	report_check(rv, errno, 0);
+	result = report_check(rv, errno, 0);
 	waitpid(pid, &x, 0);
+	return result;
 }
 
 static
-void
+int
 wait_badstatus(void *ptr, const char *desc)
 {
 	pid_t pid, rv;
 	int x;
+	int result;
 
 	report_begin(desc);
 
 	pid = fork();
 	if (pid<0) {
 		report_warn("fork failed");
-		report_aborted();
-		return;
+		report_aborted(&result);
+		return result;
 	}
 	if (pid==0) {
 		exit(0);
 	}
 
 	rv = waitpid(pid, ptr, 0);
-	report_check(rv, errno, EFAULT);
+	result = report_check(rv, errno, EFAULT);
 	waitpid(pid, &x, 0);
+	return result;
 }
 
 static
-void
+int
 wait_unaligned(void)
 {
 	pid_t pid, rv;
 	int x;
 	int status[2];	/* will have integer alignment */
 	char *ptr;
+	int result;
 
 	report_begin("wait with unaligned status");
 
 	pid = fork();
 	if (pid<0) {
 		report_warn("fork failed");
-		report_aborted();
-		return;
+		report_aborted(&result);
+		return result;
 	}
 	if (pid==0) {
 		exit(0);
@@ -139,55 +144,61 @@ wait_unaligned(void)
 	ptr++;
 
 	rv = waitpid(pid, (int *)ptr, 0);
-	report_survival(rv, errno);
+	report_survival(rv, errno, &result);
 	if (rv<0) {
 		waitpid(pid, &x, 0);
 	}
+	return result;
 }
 
 static
-void
+int
 wait_badflags(void)
 {
 	pid_t pid, rv;
 	int x;
+	int result;
 
 	report_begin("wait with bad flags");
 
 	pid = fork();
 	if (pid<0) {
 		report_warn("fork failed");
-		report_aborted();
-		return;
+		report_aborted(&result);
+		return result;
 	}
 	if (pid==0) {
 		exit(0);
 	}
 
 	rv = waitpid(pid, &x, 309429);
-	report_check(rv, errno, EINVAL);
+	result = report_check(rv, errno, EINVAL);
 	waitpid(pid, &x, 0);
+	return result;
 }
 
 static
-void
+int
 wait_self(void)
 {
 	pid_t rv;
 	int x;
+	int result;
 
 	report_begin("wait for self");
 
 	rv = waitpid(getpid(), &x, 0);
-	report_survival(rv, errno);
+	report_survival(rv, errno, &result);
+	return result;
 }
 
 static
-void
+int
 wait_parent(void)
 {
 	pid_t mypid, childpid, rv;
 	int x;
+	int result;
 
 	report_begin("wait for parent");
 	report_hassubs();
@@ -196,30 +207,32 @@ wait_parent(void)
 	childpid = fork();
 	if (childpid<0) {
 		report_warn("can't fork");
-		report_aborted();
-		return;
+		report_aborted(&result);
+		return result;
 	}
 	if (childpid==0) {
 		/* Child. Wait for parent. */
 		rv = waitpid(mypid, &x, 0);
 		report_beginsub("from child:");
-		report_survival(rv, errno);
+		report_survival(rv, errno, &result);
 		_exit(0);
 	}
-	rv = waitpid(childpid, &x, 0);
+	rv = waitpid(mypid, &x, 0);
 	report_beginsub("from parent:");
-	report_survival(rv, errno);
+	report_survival(rv, errno, &result);
+	return result;
 }
 
 ////////////////////////////////////////////////////////////
 
 static
-void
+int
 wait_siblings_child(const char *semname)
 {
 	pid_t pids[2], mypid, otherpid;
 	int rv, fd, semfd, x;
 	char c;
+	int result;
 
 	mypid = getpid();
 
@@ -244,7 +257,7 @@ wait_siblings_child(const char *semname)
 	if (fd<0) {
 		report_warn("child process (pid %d) can't open %s",
 			    mypid, TESTFILE);
-		return;
+		return FAILED;
 	}
 
 	/*
@@ -257,13 +270,13 @@ wait_siblings_child(const char *semname)
 		if (rv<0) {
 			report_warn("child process (pid %d) lseek error",
 				    mypid);
-			return;
+			return FAILED;
 		}
 		rv = read(fd, pids, sizeof(pids));
 		if (rv<0) {
 			report_warn("child process (pid %d) read error",
 				    mypid);
-			return;
+			return FAILED;
 		}
 	} while (rv < (int)sizeof(pids));
 
@@ -276,23 +289,25 @@ wait_siblings_child(const char *semname)
 	else {
 		report_warn("child process (pid %d) got garbage in comm file",
 			    mypid);
-		return;
+		return FAILED;
 	}
 	close(fd);
 
 	rv = waitpid(otherpid, &x, 0);
 	report_beginsub("sibling (pid %d)", mypid);
-	report_survival(rv, errno);
+	report_survival(rv, errno, &result);
+	return result;
 }
 
 static
-void
+int
 wait_siblings(void)
 {
 	pid_t pids[2];
 	int rv, fd, semfd, x;
 	int bad = 0;
 	char semname[32];
+	int result;
 
 	/* This test may also blow up if FS synchronization is substandard */
 
@@ -303,26 +318,26 @@ wait_siblings(void)
 	semfd = open(semname, O_WRONLY|O_CREAT|O_TRUNC, 0664);
 	if (semfd < 0) {
 		report_warn("can't make semaphore");
-		report_aborted();
-		return;
+		report_aborted(&result);
+		return result;
 	}
 
 	fd = open_testfile(NULL);
 	if (fd<0) {
-		report_aborted();
+		report_aborted(&result);
 		close(semfd);
 		remove(semname);
-		return;
+		return result;
 	}
 
 	pids[0] = fork();
 	if (pids[0]<0) {
 		report_warn("can't fork");
-		report_aborted();
+		report_aborted(&result);
 		close(fd);
 		close(semfd);
 		remove(semname);
-		return;
+		return result;
 	}
 	if (pids[0]==0) {
 		close(fd);
@@ -334,12 +349,12 @@ wait_siblings(void)
 	pids[1] = fork();
 	if (pids[1]<0) {
 		report_warn("can't fork");
-		report_aborted();
+		report_aborted(&result);
 		/* abandon the other child process :( */
 		close(fd);
 		close(semfd);
 		remove(semname);
-		return;
+		return result;
 	}
 	if (pids[1]==0) {
 		close(fd);
@@ -351,21 +366,21 @@ wait_siblings(void)
 	rv = write(fd, pids, sizeof(pids));
 	if (rv < 0) {
 		report_warn("write error on %s", TESTFILE);
-		report_aborted();
+		report_aborted(&result);
 		/* abandon child procs :( */
 		close(fd);
 		close(semfd);
 		remove(semname);
-		return;
+		return result;
 	}
 	if (rv != (int)sizeof(pids)) {
 		report_warnx("write error on %s: short count", TESTFILE);
-		report_aborted();
+		report_aborted(&result);
 		/* abandon child procs :( */
 		close(fd);
 		close(semfd);
 		remove(semname);
-		return;
+		return result;
 	}
 
 	/* gate the child procs */
@@ -388,15 +403,17 @@ wait_siblings(void)
 	}
 	if (bad) {
 		/* XXX: aborted, or failure, or what? */
-		report_aborted();
+		report_aborted(&result);
 	}
 	else {
-		report_passed();
+		report_passed(&result);
 	}
 	close(fd);
 	close(semfd);
 	remove(semname);
 	remove(TESTFILE);
+
+	return result;
 }
 
 ////////////////////////////////////////////////////////////
@@ -404,20 +421,61 @@ wait_siblings(void)
 void
 test_waitpid(void)
 {
-	wait_badpid(-8, "wait for pid -8");
-	wait_badpid(-1, "wait for pid -1");
-	wait_badpid(0, "pid zero");
-	wait_badpid(NONEXIST_PID, "nonexistent pid");
+	int ntests = 0, lost_points = 0;
+	int result;
 
-	wait_nullstatus();
-	wait_badstatus(INVAL_PTR, "wait with invalid pointer status");
-	wait_badstatus(KERN_PTR, "wait with kernel pointer status");
+	ntests++;
+	result = wait_badpid(-8, "wait for pid -8");
+	handle_result(result, &lost_points);
 
-	wait_unaligned();
+	ntests++;
+	result = wait_badpid(-1, "wait for pid -1");
+	handle_result(result, &lost_points);
 
-	wait_badflags();
+	ntests++;
+	result = wait_badpid(0, "pid zero");
+	handle_result(result, &lost_points);
 
-	wait_self();
-	wait_parent();
-	wait_siblings();
+	ntests++;
+	result = wait_badpid(NONEXIST_PID, "nonexistent pid");
+	handle_result(result, &lost_points);
+
+
+	ntests++;
+	result = wait_nullstatus();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = wait_badstatus(INVAL_PTR, "wait with invalid pointer status");
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = wait_badstatus(KERN_PTR, "wait with kernel pointer status");
+	handle_result(result, &lost_points);
+
+
+	ntests++;
+	result = wait_unaligned();
+	handle_result(result, &lost_points);
+
+
+	ntests++;
+	result = wait_badflags();
+	handle_result(result, &lost_points);
+
+
+	ntests++;
+	result = wait_self();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = wait_parent();
+	handle_result(result, &lost_points);
+
+	ntests++;
+	result = wait_siblings();
+	handle_result(result, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
diff --git a/userland/testbin/badcall/bad_write.c b/userland/testbin/badcall/bad_write.c
index 8a79803..77a1ea3 100644
--- a/userland/testbin/badcall/bad_write.c
+++ b/userland/testbin/badcall/bad_write.c
@@ -36,6 +36,11 @@
 void
 test_write(void)
 {
-	test_write_fd();
-	test_write_buf();
+	int ntests = 0, lost_points = 0;
+
+	test_write_fd(&ntests, &lost_points);
+	test_write_buf(&ntests, &lost_points);
+
+	if(!lost_points)
+		success(TEST161_SUCCESS, SECRET, "/testbin/badcall");
 }
diff --git a/userland/testbin/badcall/common_buf.c b/userland/testbin/badcall/common_buf.c
index 37f7eaa..cde9496 100644
--- a/userland/testbin/badcall/common_buf.c
+++ b/userland/testbin/badcall/common_buf.c
@@ -175,33 +175,46 @@ getcwd_badbuf(void *buf)
 ////////////////////////////////////////////////////////////
 
 static
-void
+int
 common_badbuf(struct buftest *info, void *buf, const char *bufdesc)
 {
 	int rv;
-
+	int result;
 
 	report_begin("%s with %s buffer", info->name, bufdesc);
 	info->setup();
 	rv = info->op(buf);
-	report_check(rv, errno, EFAULT);
+	result = report_check(rv, errno, EFAULT);
 	info->cleanup();
+	return result;
 }
 
 static
-void
-any_badbuf(struct buftest *info)
+int
+any_badbuf(struct buftest *info, int *ntests, int *lost_points)
 {
-	common_badbuf(info, NULL, "NULL");
-	common_badbuf(info, INVAL_PTR, "invalid");
-	common_badbuf(info, KERN_PTR, "kernel-space");
+	int result;
+
+	*ntests += 1;
+	result = common_badbuf(info, NULL, "NULL");
+	handle_result(result, lost_points);
+
+	*ntests += 1;
+	result = common_badbuf(info, INVAL_PTR, "invalid");
+	handle_result(result, lost_points);
+
+	*ntests += 1;
+	result = common_badbuf(info, KERN_PTR, "kernel-space");
+	handle_result(result, lost_points);
+
+	return result;
 }
 
 ////////////////////////////////////////////////////////////
 
 #define T(call) \
   void					\
-  test_##call##_buf(void)		\
+  test_##call##_buf(int *ntests, int *lost_points)		\
   {					\
   	static struct buftest info = {	\
   		call##_setup,		\
@@ -209,7 +222,7 @@ any_badbuf(struct buftest *info)
   		call##_cleanup,		\
   		#call,			\
 	};				\
-   	any_badbuf(&info);		\
+   	any_badbuf(&info, ntests, lost_points);	\
   }
 
 T(read);
diff --git a/userland/testbin/badcall/common_fds.c b/userland/testbin/badcall/common_fds.c
index 173db73..032c474 100644
--- a/userland/testbin/badcall/common_fds.c
+++ b/userland/testbin/badcall/common_fds.c
@@ -138,46 +138,58 @@ dup2_cleanup(void)
 ////////////////////////////////////////////////////////////
 
 static
-void
+int
 any_badfd(int (*func)(int fd), void (*cleanup)(void), const char *callname,
 	  int fd, const char *fddesc)
 {
 	int rv;
-
+	int result;
 	report_begin("%s using %s", callname, fddesc);
 	rv = func(fd);
-	report_check(rv, errno, EBADF);
+	result = report_check(rv, errno, EBADF);
 	if (cleanup) {
 		cleanup();
 	}
+	return result;
 }
 
 static
 void
 runtest(int (*func)(int fd), void (*cleanup)(void), const char *callname,
-	enum rwtestmodes rw)
+	enum rwtestmodes rw, int *ntests, int *lost_points)
 {
 	int fd;
+	int result;
 
 	/*
 	 * If adding cases, also see bad_dup2.c
 	 */
 
 	/* basic invalid case: fd -1 */
-	any_badfd(func, cleanup, callname, -1, "fd -1");
+	*ntests += 1;
+	result = any_badfd(func, cleanup, callname, -1, "fd -1");
+	handle_result(result, lost_points);
 
 	/* also try -5 in case -1 is special somehow */
-	any_badfd(func, cleanup, callname, -5, "fd -5");
+	*ntests += 1;
+	result = any_badfd(func, cleanup, callname, -5, "fd -5");
+	handle_result(result, lost_points);
 
 	/* try a fd we know is closed */
-	any_badfd(func, cleanup, callname, CLOSED_FD, "closed fd");
+	*ntests += 1;
+	result = any_badfd(func, cleanup, callname, CLOSED_FD, "closed fd");
+	handle_result(result, lost_points);
 
 	/* try a positive fd we know is out of range */
-	any_badfd(func, cleanup, callname, IMPOSSIBLE_FD, "impossible fd");
+	*ntests += 1;
+	result = any_badfd(func, cleanup, callname, IMPOSSIBLE_FD, "impossible fd");
+	handle_result(result, lost_points);
 
 	/* test for off-by-one errors */
 #ifdef OPEN_MAX
-	any_badfd(func, cleanup, callname, OPEN_MAX, "fd OPEN_MAX");
+	*ntests += 1;
+	result = any_badfd(func, cleanup, callname, OPEN_MAX, "fd OPEN_MAX");
+	handle_result(result, lost_points);
 #else
 	warnx("Warning: OPEN_MAX not defined, test skipped");
 #endif
@@ -188,8 +200,10 @@ runtest(int (*func)(int fd), void (*cleanup)(void), const char *callname,
 			/* already printed a message */
 		}
 		else {
-			any_badfd(func, cleanup, callname, fd,
+			*ntests += 1;
+			result = any_badfd(func, cleanup, callname, fd,
 				  "fd opened read-only");
+			handle_result(result, lost_points);
 		}
 		close(fd);
 	}
@@ -199,8 +213,10 @@ runtest(int (*func)(int fd), void (*cleanup)(void), const char *callname,
 			/* already printed a message */
 		}
 		else {
-			any_badfd(func, cleanup, callname, fd,
+			*ntests += 1;
+			result = any_badfd(func, cleanup, callname, fd,
 				  "fd opened write-only");
+			handle_result(result, lost_points);
 		}
 		close(fd);
 	}
@@ -208,18 +224,18 @@ runtest(int (*func)(int fd), void (*cleanup)(void), const char *callname,
 
 ////////////////////////////////////////////////////////////
 
-#define T(call, rw) \
-  void                                          \
-  test_##call##_fd(void)                        \
-  {                                             \
-   	runtest(call##_badfd, NULL, #call, rw); \
+#define T(call, rw)                                                    \
+  void                                                                 \
+  test_##call##_fd(int *ntests, int *lost_points)                      \
+  {                                                                    \
+   	runtest(call##_badfd, NULL, #call, rw, ntests, lost_points);   \
   }
 
-#define TC(call, rw) \
-  void                                          \
-  test_##call##_fd(void)                        \
-  {                                             \
-   	runtest(call##_badfd, call##_cleanup, #call, rw);\
+#define TC(call, rw)                                                           \
+  void                                                                         \
+  test_##call##_fd(int *ntests, int *lost_points)                              \
+  {                                                                            \
+   	runtest(call##_badfd, call##_cleanup, #call, rw, ntests, lost_points); \
   }
 
 T(read, RW_TEST_WRONLY);
diff --git a/userland/testbin/badcall/common_path.c b/userland/testbin/badcall/common_path.c
index 1a8ff9d..0a00cb6 100644
--- a/userland/testbin/badcall/common_path.c
+++ b/userland/testbin/badcall/common_path.c
@@ -148,46 +148,58 @@ stat_badpath(const char *name)
 ////////////////////////////////////////////////////////////
 
 static
-void
+int
 common_badpath(int (*func)(const char *path), int mk, int rm, const char *path,
 	       const char *call, const char *pathdesc)
 {
 	int rv;
+	int result;
 
 	report_begin("%s with %s path", call, pathdesc);
 
 	if (mk) {
 		if (create_testfile()<0) {
-			report_aborted();
-			return;
+			report_aborted(&result);
+			return result;
 		}
 	}
 
 	rv = func(path);
-	report_check(rv, errno, EFAULT);
+	result = report_check(rv, errno, EFAULT);
 
 	if (mk || rm) {
 		remove(TESTFILE);
 	}
+	return result;
 }
 
 static
 void
-any_badpath(int (*func)(const char *path), const char *call, int mk, int rm)
+any_badpath(int (*func)(const char *path), const char *call, int mk, int rm,
+		int *ntests, int *lost_points)
 {
-	common_badpath(func, mk, rm, NULL, call, "NULL");
-	common_badpath(func, mk, rm, INVAL_PTR, call, "invalid-pointer");
-	common_badpath(func, mk, rm, KERN_PTR, call, "kernel-pointer");
+	int result;
+	// We have a total of 3 tests
+	*ntests = *ntests + 3;
+
+	result = common_badpath(func, mk, rm, NULL, call, "NULL");
+	handle_result(result, lost_points);
+
+	result = common_badpath(func, mk, rm, INVAL_PTR, call, "invalid-pointer");
+	handle_result(result, lost_points);
+
+	result = common_badpath(func, mk, rm, KERN_PTR, call, "kernel-pointer");
+	handle_result(result, lost_points);
 }
 
 ////////////////////////////////////////////////////////////
 
 /* functions with one pathname */
-#define T(call) \
-  void                                  \
-  test_##call##_path(void)              \
-  {                                     \
-   	any_badpath(call##_badpath, #call, 0, 0); \
+#define T(call)                                                        \
+  void                                                                 \
+  test_##call##_path(int *ntests, int *lost_points)                    \
+  {                                                                    \
+   	any_badpath(call##_badpath, #call, 0, 0, ntests, lost_points); \
   }
 
 T(open);
@@ -200,12 +212,12 @@ T(stat);
 T(lstat);
 
 /* functions with two pathnames */
-#define T2(call) \
-  void                                  \
-  test_##call##_paths(void)             \
-  {                                     \
-   	any_badpath(call##_badpath1, #call "(arg1)", 0, 1); \
-   	any_badpath(call##_badpath2, #call "(arg2)", 1, 1); \
+#define T2(call)                                                                 \
+  void                                                                           \
+  test_##call##_paths(int *ntests, int *lost_points)                             \
+  {                                                                              \
+   	any_badpath(call##_badpath1, #call "(arg1)", 0, 1, ntests, lost_points); \
+   	any_badpath(call##_badpath2, #call "(arg2)", 1, 1, ntests, lost_points); \
   }
 
 T2(rename);
diff --git a/userland/testbin/badcall/driver.c b/userland/testbin/badcall/driver.c
index 31142f0..9155271 100644
--- a/userland/testbin/badcall/driver.c
+++ b/userland/testbin/badcall/driver.c
@@ -121,16 +121,18 @@ int
 create_testdir(void)
 {
 	int rv;
+	int result;
+
 	rv = mkdir(TESTDIR, 0775);
 	if (rv<0) {
 		if (errno == ENOSYS) {
 			report_saw_enosys();
 			report_warnx("mkdir unimplemented; cannot run test");
-			report_skipped();
+			report_skipped(&result);
 		}
 		else {
 			report_warn("mkdir %s failed", TESTDIR);
-			report_aborted();
+			report_aborted(&result);
 		}
 		return -1;
 	}
@@ -198,20 +200,20 @@ menu(void)
 {
 	int i;
 	for (i=0; ops[i].name; i++) {
-		printf("[%c] %-24s", ops[i].ch, ops[i].name);
+		tprintf("[%c] %-24s", ops[i].ch, ops[i].name);
 		if (i%2==1) {
-			printf("\n");
+			tprintf("\n");
 		}
 	}
 	if (i%2==1) {
-		printf("\n");
+		tprintf("\n");
 	}
-	printf("[1] %-24s", "asst1");
-	printf("[2] %-24s\n", "asst2");
-	printf("[3] %-24s", "asst3");
-	printf("[4] %-24s\n", "asst4");
-	printf("[*] %-24s", "all");
-	printf("[!] %-24s\n", "quit");
+	tprintf("[1] %-24s", "asst1");
+	tprintf("[2] %-24s\n", "asst2");
+	tprintf("[3] %-24s", "asst3");
+	tprintf("[4] %-24s\n", "asst4");
+	tprintf("[*] %-24s", "all");
+	tprintf("[!] %-24s\n", "quit");
 }
 
 static
@@ -231,7 +233,7 @@ runit(int op)
 
 	if (op=='*') {
 		for (i=0; ops[i].name; i++) {
-			printf("[%s]\n", ops[i].name);
+			tprintf("[%s]\n", ops[i].name);
 			ops[i].f();
 		}
 		return;
@@ -241,7 +243,7 @@ runit(int op)
 		k = op-'0';
 		for (i=0; ops[i].name; i++) {
 			if (ops[i].asst <= k) {
-				printf("[%s]\n", ops[i].name);
+				tprintf("[%s]\n", ops[i].name);
 				ops[i].f();
 			}
 		}
@@ -249,7 +251,7 @@ runit(int op)
 	}
 
 	if (op < LOWEST || op > HIGHEST) {
-		printf("Invalid request %c\n", op);
+		tprintf("Invalid request %c\n", op);
 		return;
 	}
 
@@ -261,12 +263,12 @@ main(int argc, char **argv)
 {
 	int op, i, j;
 
-	printf("[%c-%c, 1-4, *, ?=menu, !=quit]\n", LOWEST, HIGHEST);
+	tprintf("[%c-%c, 1-4, *, ?=menu, !=quit]\n", LOWEST, HIGHEST);
 
 	if (argc > 1) {
 		for (i=1; i<argc; i++) {
 			for (j=0; argv[i][j]; j++) {
-				printf("Choose: %c\n",
+				tprintf("Choose: %c\n",
 				       argv[i][j]);
 				runit(argv[i][j]);
 			}
@@ -275,12 +277,12 @@ main(int argc, char **argv)
 	else {
 		menu();
 		while (1) {
-			printf("Choose: ");
+			tprintf("Choose: ");
 			op = getchar();
 			if (op==EOF) {
 				break;
 			}
-			printf("%c\n", op);
+			tprintf("%c\n", op);
 			runit(op);
 		}
 	}
diff --git a/userland/testbin/badcall/report.c b/userland/testbin/badcall/report.c
index f93c7cf..fc7ca4e 100644
--- a/userland/testbin/badcall/report.c
+++ b/userland/testbin/badcall/report.c
@@ -251,27 +251,31 @@ report_end(const char *msg)
 }
 
 void
-report_passed(void)
+report_passed(int *status)
 {
 	report_end("passed");
+	*status = SUCCESS;
 }
 
 void
-report_failure(void)
+report_failure(int *status)
 {
 	report_end("FAILURE");
+	*status = FAILED;
 }
 
 void
-report_skipped(void)
+report_skipped(int *status)
 {
 	report_end("------");
+	*status = SKIPPED;
 }
 
 void
-report_aborted(void)
+report_aborted(int *status)
 {
 	report_end("ABORTED");
+	*status = ABORTED;
 }
 
 ////////////////////////////////////////////////////////////
@@ -283,18 +287,19 @@ report_aborted(void)
  */
 
 void
-report_survival(int rv, int error)
+report_survival(int rv, int error, int *result)
 {
 	/* allow any error as long as we survive */
 	report_result(rv, error);
-	report_passed();
+	report_passed(result);
 }
 
 static
-void
+int
 report_checkN(int rv, int error, int *right_errors, int right_num)
 {
 	int i, goterror;
+	int result = 1;
 
 	if (rv==-1) {
 		goterror = error;
@@ -306,39 +311,40 @@ report_checkN(int rv, int error, int *right_errors, int right_num)
 	for (i=0; i<right_num; i++) {
 		if (goterror == right_errors[i]) {
 			report_result(rv, error);
-			report_passed();
-			return;
+			report_passed(&result);
+			return result;
 		}
 	}
 
 	if (goterror == ENOSYS) {
 		report_saw_enosys();
 		say("(unimplemented) ");
-		report_skipped();
+		report_skipped(&result);
 	}
 	else {
 		report_result(rv, error);
-		report_failure();
+		report_failure(&result);
 	}
+	return result;
 }
 
-void
+int
 report_check(int rv, int error, int right_error)
 {
-	report_checkN(rv, error, &right_error, 1);
+	return report_checkN(rv, error, &right_error, 1);
 }
 
-void
+int
 report_check2(int rv, int error, int okerr1, int okerr2)
 {
 	int ok[2];
 
 	ok[0] = okerr1;
 	ok[1] = okerr2;
-	report_checkN(rv, error, ok, 2);
+	return report_checkN(rv, error, ok, 2);
 }
 
-void
+int
 report_check3(int rv, int error, int okerr1, int okerr2, int okerr3)
 {
 	int ok[3];
@@ -346,5 +352,13 @@ report_check3(int rv, int error, int okerr1, int okerr2, int okerr3)
 	ok[0] = okerr1;
 	ok[1] = okerr2;
 	ok[2] = okerr3;
-	report_checkN(rv, error, ok, 3);
+	return report_checkN(rv, error, ok, 3);
 }
+
+void
+handle_result(int result, int *lost_points)
+{
+	if(result)
+		*lost_points = *lost_points + 1;
+}
+
diff --git a/userland/testbin/badcall/test.h b/userland/testbin/badcall/test.h
index 88ebe0a..ccd4ee7 100644
--- a/userland/testbin/badcall/test.h
+++ b/userland/testbin/badcall/test.h
@@ -27,6 +27,8 @@
  * SUCH DAMAGE.
  */
 
+#include <test161/test161.h>
+
 #define TESTFILE "badcallfile"
 #define TESTDIR  "badcalldir"
 #define TESTLINK "badcalllink"
@@ -37,6 +39,11 @@
 #define PF(a, b)
 #endif
 
+#define SUCCESS 0
+#define SKIPPED	1
+#define FAILED	2
+#define ABORTED	3
+
 /* driver.c */
 int open_testfile(const char *str);
 int reopen_testfile(int openflags);
@@ -52,46 +59,46 @@ PF(1, 2) void report_warn(const char *fmt, ...);
 PF(1, 2) void report_warnx(const char *fmt, ...);
 void report_result(int rv, int error);
 void report_saw_enosys(void);
-void report_passed(void);
-void report_failure(void);
-void report_skipped(void);
-void report_aborted(void);
-void report_survival(int rv, int error);
-void report_check(int rv, int error, int right_error);
-void report_check2(int rv, int error, int okerr1, int okerr2);
-void report_check3(int rv, int error, int okerr1, int okerr2, int okerr3);
+void report_passed(int *result);
+void report_failure(int *result);
+void report_skipped(int *result);
+void report_aborted(int *result);
+void report_survival(int rv, int error, int *result);
+int  report_check(int rv, int error, int right_error);
+int  report_check2(int rv, int error, int okerr1, int okerr2);
+int  report_check3(int rv, int error, int okerr1, int okerr2, int okerr3);
 
 /* common_buf.c */
-void test_read_buf(void);
-void test_write_buf(void);
-void test_getdirentry_buf(void);
-void test_getcwd_buf(void);
-void test_readlink_buf(void);
+void test_read_buf(int *ntests, int *lost_points);
+void test_write_buf(int *ntests, int *lost_points);
+void test_getdirentry_buf(int *ntests, int *lost_points);
+void test_getcwd_buf(int *ntests, int *lost_points);
+void test_readlink_buf(int *ntests, int *lost_points);
 
 /* common_fds.c */
-void test_read_fd(void);
-void test_write_fd(void);
-void test_close_fd(void);
-void test_ioctl_fd(void);
-void test_lseek_fd(void);
-void test_fsync_fd(void);
-void test_ftruncate_fd(void);
-void test_fstat_fd(void);
-void test_getdirentry_fd(void);
-void test_dup2_fd(void);
+void test_read_fd(int *ntests, int *lost_points);
+void test_write_fd(int *ntests, int *lost_points);
+void test_close_fd(int *ntests, int *lost_points);
+void test_ioctl_fd(int *ntests, int *lost_points);
+void test_lseek_fd(int *ntests, int *lost_points);
+void test_fsync_fd(int *ntests, int *lost_points);
+void test_ftruncate_fd(int *ntests, int *lost_points);
+void test_fstat_fd(int *ntests, int *lost_points);
+void test_getdirentry_fd(int *ntests, int *lost_points);
+void test_dup2_fd(int *ntests, int *lost_points);
 
 /* common_path.c */
-void test_open_path(void);
-void test_remove_path(void);
-void test_rename_paths(void);
-void test_link_paths(void);
-void test_mkdir_path(void);
-void test_rmdir_path(void);
-void test_chdir_path(void);
-void test_symlink_paths(void);
-void test_readlink_path(void);
-void test_stat_path(void);
-void test_lstat_path(void);
+void test_open_path(int *ntests, int *lost_points);
+void test_remove_path(int *ntests, int *lost_points);
+void test_rename_paths(int *ntests, int *lost_points);
+void test_link_paths(int *ntests, int *lost_points);
+void test_mkdir_path(int *ntests, int *lost_points);
+void test_rmdir_path(int *ntests, int *lost_points);
+void test_chdir_path(int *ntests, int *lost_points);
+void test_symlink_paths(int *ntests, int *lost_points);
+void test_readlink_path(int *ntests, int *lost_points);
+void test_stat_path(int *ntests, int *lost_points);
+void test_lstat_path(int *ntests, int *lost_points);
 
 /* bad_*.c */
 void test_execv(void);
@@ -122,3 +129,6 @@ void test_time(void);
 void test_getcwd(void);
 void test_stat(void);
 void test_lstat(void);		/* in bad_stat.c */
+
+void handle_result(int result, int *lost_points);
+
diff --git a/userland/testbin/bigexec/bigexec.c b/userland/testbin/bigexec/bigexec.c
index c417d81..1f92fea 100644
--- a/userland/testbin/bigexec/bigexec.c
+++ b/userland/testbin/bigexec/bigexec.c
@@ -36,11 +36,13 @@
 
 #include <stdarg.h>
 #include <stdlib.h>
+#include <stdio.h>
 #include <string.h>
 #include <unistd.h>
 #include <limits.h>
 #include <assert.h>
 #include <err.h>
+#include <test161/test161.h>
 
 #define _PATH_MYSELF "/testbin/bigexec"
 
@@ -110,6 +112,7 @@ try(const char *first, ...)
 	va_list ap;
 	int num;
 
+	nprintf(".");
 	assert(first != NULL);
 	args[0] = _PATH_MYSELF;
 	args[1] = first;
@@ -124,6 +127,7 @@ try(const char *first, ...)
 		assert(num < 20);
 		args[num++] = s;
 	}
+	nprintf("\n");
 	assert(num < 20);
 	args[num] = NULL;
 	execv(_PATH_MYSELF, (char **)args);
@@ -137,9 +141,12 @@ trymany(int num, const char *word)
 	const char *args[num+2];
 	int i;
 
+	nprintf(".");
 	args[0] = _PATH_MYSELF;
 	for (i=0; i<num; i++) {
 		args[i+1] = word;
+		if(i%10)
+			nprintf(".");
 	}
 	args[num+1] = NULL;
 	execv(_PATH_MYSELF, (char **)args);
@@ -376,7 +383,9 @@ main(int argc, char *argv[])
 	}
 	else if (checkmany(argc, argv, 1000, word8)) {
 #endif
+		nprintf("\n");
 		warnx("Complete.");
+		success(TEST161_SUCCESS, SECRET, "/testbin/bigexec");
 		return 0;
 	}
 	else {
@@ -384,4 +393,5 @@ main(int argc, char *argv[])
 		dumpargs(argc, argv);
 		return 1;
 	}
+	success(TEST161_SUCCESS, SECRET, "/testbin/bigexec");
 }
diff --git a/userland/testbin/bigfile/bigfile.c b/userland/testbin/bigfile/bigfile.c
index 6dc7b55..e628e0a 100644
--- a/userland/testbin/bigfile/bigfile.c
+++ b/userland/testbin/bigfile/bigfile.c
@@ -78,7 +78,7 @@ main(int argc, char *argv[])
 	/* round size up */
 	size = ((size + chunksize - 1) / chunksize) * chunksize;
 
-	printf("Creating a file of size %d in %d-byte chunks\n",
+	tprintf("Creating a file of size %d in %d-byte chunks\n",
 	       size, chunksize);
 
 	fd = open(filename, O_WRONLY|O_CREAT|O_TRUNC);
diff --git a/userland/testbin/bigfork/bigfork.c b/userland/testbin/bigfork/bigfork.c
index 80abad3..44546b0 100644
--- a/userland/testbin/bigfork/bigfork.c
+++ b/userland/testbin/bigfork/bigfork.c
@@ -44,6 +44,8 @@
 #include <string.h>
 #include <unistd.h>
 #include <err.h>
+#include <test/test.h>
+#include <test161/test161.h>
 
 #define BRANCHES 6
 
@@ -54,6 +56,8 @@
  */
 #define DIM 64
 
+#define PROGRESS_INTERVAL 25000
+
 static int m1[DIM*DIM], m2[DIM*DIM], m3[DIM*DIM], m4[DIM*DIM];
 static const int right[BRANCHES] = {
 	536763422,
@@ -76,7 +80,9 @@ init(void)
 		for (j=0; j<DIM; j++) {
 			m1[i*DIM+j] = random() % 11 - 5;
 		}
+		TEST161_LPROGRESS(0);
 	}
+	nprintf("\n");
 }
 
 static
@@ -96,12 +102,15 @@ static
 void
 mul(int *x, const int *a, const int *b)
 {
-	unsigned i, j, k;
+	unsigned i, j, k, tot;
 
+	tot = 0;
 	for (i=0; i<DIM; i++) {
 		for (j=0; j<DIM; j++) {
 			x[i*DIM+j] = 0;
 			for (k=0; k<DIM; k++) {
+				TEST161_LPROGRESS_N(tot, PROGRESS_INTERVAL);
+				tot++;
 				x[i*DIM+j] += a[i*DIM+k] * b[k*DIM+j]; 
 			}
 		}
@@ -177,11 +186,15 @@ dowait(pid_t pid)
 		exit(failures);
 	}
 	else {
+		// If the child crashes or waitpid returns -1, we don't know how many errors
+		// resulted (if any), but it's an error if we can't tell.
 		if (waitpid(pid, &status, 0) < 0) {
 			warn("waitpid(%d)", pid);
+			failures += 1;
 		}
 		else if (WIFSIGNALED(status)) {
 			warnx("pid %d: signal %d", pid, WTERMSIG(status));
+			failures += 1;
 		}
 		else if (WEXITSTATUS(status) > 0) {
 			failures += WEXITSTATUS(status);
@@ -196,7 +209,6 @@ dotest(void)
 	unsigned i, me;
 	pid_t pids[BRANCHES];
 	int t;
-	char msg[128];
 
 	me = 0;
 	for (i=0; i<BRANCHES; i++) {
@@ -207,26 +219,28 @@ dotest(void)
 		grind();
 		t = trace();
 		if (t == right[i]) {
-			snprintf(msg, sizeof(msg),
-				 "Stage %u #%u done: %d\n", i, me, trace());
+			lsay("\nStage %u #%u done: %d\n", i, me, trace());
 		}
 		else {
-			snprintf(msg, sizeof(msg),
-				 "Stage %u #%u FAILED: got %d, expected %d\n",
+			lsay("Stage %u #%u FAILED: got %d, expected %d\n",
 				 i, me, t, right[i]);
+			success(TEST161_FAIL, SECRET, "/testbin/bigfork");
 			failures++;
 		}
-		(void)write(STDOUT_FILENO, msg, strlen(msg));
+		TEST161_LPROGRESS(0);
 	}
 
 	for (i=BRANCHES; i-- > 0; ) {
 		dowait(pids[i]);
 	}
+
 	if (failures > 0) {
-		printf("%u failures.\n", failures);
+		tprintf("%u failures.\n", failures);
+		success(TEST161_FAIL, SECRET, "/testbin/bigfork");
 	}
 	else {
-		printf("Done.\n");
+		tprintf("Done.\n");
+		success(TEST161_SUCCESS, SECRET, "/testbin/bigfork");
 	}
 }
 
diff --git a/userland/testbin/bigseek/bigseek.c b/userland/testbin/bigseek/bigseek.c
index aab4601..6329bc3 100644
--- a/userland/testbin/bigseek/bigseek.c
+++ b/userland/testbin/bigseek/bigseek.c
@@ -182,7 +182,7 @@ static
 void
 try_seeking(int fd, off_t pos, off_t cursize)
 {
-	printf("Seeking to (and near) 0x%llx\n", pos);
+	tprintf("Seeking to (and near) 0x%llx\n", pos);
 
 	/* Go to the place. */
 	dolseek(fd, pos, SEEK_SET, "SEEK_SET", pos);
@@ -215,30 +215,30 @@ main(void)
 	off_t cursize;
 	int fd;
 
-	printf("Creating file...\n");
+	tprintf("Creating file...\n");
 	fd = open(TESTFILE, O_RDWR|O_CREAT|O_TRUNC, 0664);
 	if (fd < 0) {
 		err(1, "%s", TESTFILE);
 	}
 
-	printf("Writing something at offset 0\n");
+	tprintf("Writing something at offset 0\n");
 	write_slogan(fd, 0, false);
 	cursize = strlen(slogans[0]);
 
 	try_seeking(fd, (off_t)0x1000LL, cursize);
 
-	printf("Writing something else\n");
+	tprintf("Writing something else\n");
 	write_slogan(fd, 1, false);
 	cursize = (off_t)0x1000LL + strlen(slogans[1]);
 
 	try_seeking(fd, (off_t)0, cursize);
 
 	/* If seek is totally bust, this will fail. */
-	printf("Checking what we wrote\n");
+	tprintf("Checking what we wrote\n");
 	check_slogan(fd, 0);
 
 	try_seeking(fd, (off_t)0x1000LL, cursize);
-	printf("Checking the other thing we wrote\n");
+	tprintf("Checking the other thing we wrote\n");
 	check_slogan(fd, 1);
 
 	try_seeking(fd, (off_t)0x20LL, cursize);
@@ -250,19 +250,19 @@ main(void)
 	try_seeking(fd, (off_t)0x180000000LL, cursize);
 	try_seeking(fd, (off_t)0x180000020LL, cursize);
 
-	printf("Now trying to read (should get EOF)\n");
+	tprintf("Now trying to read (should get EOF)\n");
 	try_reading(fd);
 
-	printf("Now trying to write (should get EFBIG)\n");
+	tprintf("Now trying to write (should get EFBIG)\n");
 	try_writing(fd);
 
 	try_seeking(fd, (off_t)0x100000000LL, cursize);
 
 	/* If seek truncates to 32 bits, this might read the slogan instead */
-	printf("Trying to read again (should get EOF)\n");
+	tprintf("Trying to read again (should get EOF)\n");
 	try_reading(fd);
 
-	printf("Passed.\n");
+	tprintf("Passed.\n");
 
 	close(fd);
 	remove(TESTFILE);
diff --git a/userland/testbin/bloat/bloat.c b/userland/testbin/bloat/bloat.c
index ed5aca7..21ffbc2 100644
--- a/userland/testbin/bloat/bloat.c
+++ b/userland/testbin/bloat/bloat.c
@@ -131,11 +131,11 @@ static
 void
 printsettings(void)
 {
-	printf("Page size: %u\n", PAGE_SIZE);
-	printf("Allocating %u pages and touching %u pages on each cycle.\n",
+	tprintf("Page size: %u\n", PAGE_SIZE);
+	tprintf("Allocating %u pages and touching %u pages on each cycle.\n",
 	       allocs, touchpages);
-	printf("Page selection bias: %u\n", bias);
-	printf("\n");
+	tprintf("Page selection bias: %u\n", bias);
+	tprintf("\n");
 }
 
 static
diff --git a/userland/testbin/crash/crash.c b/userland/testbin/crash/crash.c
index 57406aa..50d61de 100644
--- a/userland/testbin/crash/crash.c
+++ b/userland/testbin/crash/crash.c
@@ -46,6 +46,8 @@
 #include <unistd.h>
 #include <signal.h>
 #include <err.h>
+#include <test161/test161.h>
+
 
 #if defined(__mips__)
 #define KERNEL_ADDR	0x80000000
@@ -292,7 +294,7 @@ runop(int op)
 	/* intentionally don't check if op is in bounds :) */
 	opindex = op-'a';
 
-	printf("Running: [%c] %s\n", ops[opindex].ch, ops[opindex].name);
+	tprintf("Running: [%c] %s\n", ops[opindex].ch, ops[opindex].name);
 
 	if (forking) {
 		pid = fork();
@@ -307,25 +309,25 @@ runop(int op)
 			}
 			ok = 0;
 			if (WIFSIGNALED(status)) {
-				printf("Signal %d\n", WTERMSIG(status));
+				tprintf("Signal %d\n", WTERMSIG(status));
 				if (WTERMSIG(status) == ops[opindex].sig) {
 					ok = 1;
 				}
 			}
 			else {
-				printf("Exit %d\n", WEXITSTATUS(status));
+				tprintf("Exit %d\n", WEXITSTATUS(status));
 				if (WEXITSTATUS(status) == MAGIC) {
 					ok = 1;
 				}
 			}
 			if (ok) {
-				printf("Ok.\n");
+				tprintf("Ok.\n");
 			}
 			else {
-				printf("FAILED: expected signal %d\n",
+				tprintf("FAILED: expected signal %d\n",
 				       ops[opindex].sig);
 			}
-			printf("\n");
+			tprintf("\n");
 			return;
 		}
 	}
@@ -351,14 +353,14 @@ ask(void)
 	while (1) {
 
 		for (i=0; ops[i].name; i++) {
-			printf("[%c] %s\n", ops[i].ch, ops[i].name);
+			tprintf("[%c] %s\n", ops[i].ch, ops[i].name);
 		}
-		printf("[-] Disable forking\n");
-		printf("[+] Enable forking (default)\n");
-		printf("[*] Run everything\n");
-		printf("[!] Quit\n");
+		tprintf("[-] Disable forking\n");
+		tprintf("[+] Enable forking (default)\n");
+		tprintf("[*] Run everything\n");
+		tprintf("[!] Quit\n");
 
-		printf("Choose: ");
+		tprintf("Choose: ");
 		op = getchar();
 
 		if (op == '!') {
@@ -384,5 +386,7 @@ main(int argc, char **argv)
 			}
 		}
 	}
+	printf("Should print success\n");
+	success(TEST161_SUCCESS, SECRET, "/testbin/crash");
 	return 0;
 }
diff --git a/userland/testbin/ctest/ctest.c b/userland/testbin/ctest/ctest.c
index 0dcd9e9..fcee4ad 100644
--- a/userland/testbin/ctest/ctest.c
+++ b/userland/testbin/ctest/ctest.c
@@ -38,6 +38,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <test161/test161.h>
 
 /*
  * SIZE is the amount of memory used.
@@ -64,12 +65,12 @@ main(int argc, char **argv)
 		stride = atoi(argv[1]);
 	}
 	if (stride <= 0 || argc > 2) {
-		printf("Usage: ctest [stridesize]\n");
-		printf("   stridesize should not be a multiple of 2.\n");
+		tprintf("Usage: ctest [stridesize]\n");
+		tprintf("   stridesize should not be a multiple of 2.\n");
 		return 1;
 	}
 
-	printf("Starting ctest: stride %d\n", stride);
+	tprintf("Starting ctest: stride %d\n", stride);
 
 	/*
 	 * Generate a huge linked list, with each entry pointing to
@@ -90,12 +91,11 @@ main(int argc, char **argv)
 	 */
 	e = &array[0];
 	for (i=0; i<SIZE; i++) {
-		if (i % stride == 0) {
-			putchar('.');
-		}
+		TEST161_LPROGRESS_N(i, stride);
 		e = e->e;
 	}
 
-	printf("\nDone!\n");
+	// Success is not crashing
+	success(TEST161_SUCCESS, SECRET, "/testbin/ctest");
 	return 0;
 }
diff --git a/userland/testbin/dirconc/dirconc.c b/userland/testbin/dirconc/dirconc.c
index c388006..36bf823 100644
--- a/userland/testbin/dirconc/dirconc.c
+++ b/userland/testbin/dirconc/dirconc.c
@@ -84,7 +84,7 @@ choose_name(char *buf, size_t len)
 
 /*
  * The purpose of this is to be atomic. In our world, straight
- * printf tends not to be.
+ * tprintf tends not to be.
  */
 static
 void
diff --git a/userland/testbin/dirseek/dirseek.c b/userland/testbin/dirseek/dirseek.c
index 200640c..bc882bc 100644
--- a/userland/testbin/dirseek/dirseek.c
+++ b/userland/testbin/dirseek/dirseek.c
@@ -205,7 +205,7 @@ firstread(void)
 		errx(1, ".: File position after open not 0");
 	}
 
-	printf("Scanning directory...\n");
+	tprintf("Scanning directory...\n");
 
 	readit();
 }
@@ -216,7 +216,7 @@ doreadat0(void)
 {
 	off_t pos;
 
-	printf("Rewinding directory and reading it again...\n");
+	tprintf("Rewinding directory and reading it again...\n");
 
 	pos = lseek(dirfd, 0, SEEK_SET);
 	if (pos < 0) {
@@ -274,7 +274,7 @@ readallonebyone(void)
 {
 	int i;
 
-	printf("Trying to read each entry again...\n");
+	tprintf("Trying to read each entry again...\n");
 	for (i=0; testfiles[i].name; i++) {
 		doreadone(i);
 	}
@@ -286,7 +286,7 @@ readallrandomly(void)
 {
 	int n, i, x;
 
-	printf("Trying to read a bunch of entries randomly...\n");
+	tprintf("Trying to read a bunch of entries randomly...\n");
 
 	for (i=0; testfiles[i].name; i++);
 	n = i;
@@ -327,7 +327,7 @@ doreadateof(void)
 	off_t pos;
 	int i;
 
-	printf("Trying to read after going to EOF...\n");
+	tprintf("Trying to read after going to EOF...\n");
 
 	pos = lseek(dirfd, 0, SEEK_END);
 	if (pos<0) {
@@ -364,7 +364,7 @@ dobadreads(void)
 	off_t pos, pos2, eof;
 	int valid, i, k=0;
 
-	printf("Trying some possibly invalid reads...\n");
+	tprintf("Trying some possibly invalid reads...\n");
 
 	eof = lseek(dirfd, 0, SEEK_END);
 	if (eof < 0) {
@@ -394,13 +394,13 @@ dobadreads(void)
 	}
 
 	if (k>0) {
-		printf("Survived %d invalid reads...\n", k);
+		tprintf("Survived %d invalid reads...\n", k);
 	}
 	else {
-		printf("Couldn't find any invalid offsets to try...\n");
+		tprintf("Couldn't find any invalid offsets to try...\n");
 	}
 
-	printf("Trying to read beyond EOF...\n");
+	tprintf("Trying to read beyond EOF...\n");
 	pos2 = lseek(dirfd, eof + 1000, SEEK_SET);
 	if (pos2 < 0) {
 		/* this is ok */
@@ -414,10 +414,10 @@ static
 void
 dotest(void)
 {
-	printf("Opening directory...\n");
+	tprintf("Opening directory...\n");
 	openit();
 
-	printf("Running tests...\n");
+	tprintf("Running tests...\n");
 
 	/* read the whole directory */
 	firstread();
@@ -443,7 +443,7 @@ dotest(void)
 	/* rewind again to make sure the invalid attempts didn't break it */
 	doreadat0();
 
-	printf("Closing directory...\n");
+	tprintf("Closing directory...\n");
 	closeit();
 }
 
@@ -489,7 +489,7 @@ setup(void)
 {
 	int i;
 
-	printf("Making directory %s...\n", TESTDIR);
+	tprintf("Making directory %s...\n", TESTDIR);
 
 	/* Create a directory */
 	if (mkdir(TESTDIR, 0775)<0) {
@@ -501,7 +501,7 @@ setup(void)
 		err(1, "%s: chdir", TESTDIR);
 	}
 
-	printf("Making some files...\n");
+	tprintf("Making some files...\n");
 
 	/* Populate it */
 	for (i=0; testfiles[i].name; i++) {
@@ -518,7 +518,7 @@ cleanup(void)
 {
 	int i;
 
-	printf("Cleaning up...\n");
+	tprintf("Cleaning up...\n");
 
 	/* Remove the files */
 	for (i=0; testfiles[i].name; i++) {
diff --git a/userland/testbin/dirtest/dirtest.c b/userland/testbin/dirtest/dirtest.c
index 692506d..5f2f525 100644
--- a/userland/testbin/dirtest/dirtest.c
+++ b/userland/testbin/dirtest/dirtest.c
@@ -58,7 +58,7 @@ main(void)
 	strcpy(dirname, onename);
 
 	for (i=0; i<MAXLEVELS; i++) {
-		printf("Creating directory: %s\n", dirname);
+		tprintf("Creating directory: %s\n", dirname);
 
 		if (mkdir(dirname, 0755)) {
 			err(1, "%s: mkdir", dirname);
@@ -68,18 +68,18 @@ main(void)
 		strcat(dirname, onename);
 	}
 
-	printf("Passed directory creation test.\n");
+	tprintf("Passed directory creation test.\n");
 
 	for (i=0; i<MAXLEVELS; i++) {
 		dirname[strlen(dirname) - strlen(onename) - 1] = 0;
 
-		printf("Removing directory: %s\n", dirname);
+		tprintf("Removing directory: %s\n", dirname);
 
 		if (rmdir(dirname)) {
 			err(1, "%s: rmdir", dirname);
 		}
 	}
-	printf("Passed directory removal test.\n");
+	tprintf("Passed directory removal test.\n");
 
 	return 0;
 }
diff --git a/userland/testbin/f_test/f_read.c b/userland/testbin/f_test/f_read.c
index f95ade3..cabb71e 100644
--- a/userland/testbin/f_test/f_read.c
+++ b/userland/testbin/f_test/f_read.c
@@ -79,7 +79,7 @@ subproc_read(void)
 	int fd;
 	int i, res;
 
-	printf("File Reader starting ...\n\n");
+	tprintf("File Reader starting ...\n\n");
 
 	fd = open(FNAME, O_RDONLY);
 	if (fd < 0) {
@@ -102,5 +102,5 @@ subproc_read(void)
 
 	close(fd);
 
-	printf("File Read exited successfully!\n");
+	tprintf("File Read exited successfully!\n");
 }
diff --git a/userland/testbin/f_test/f_test.c b/userland/testbin/f_test/f_test.c
index 868b232..df06773 100644
--- a/userland/testbin/f_test/f_test.c
+++ b/userland/testbin/f_test/f_test.c
@@ -124,8 +124,8 @@ big_file(int size)
 {
 	int i, j, fileid;
 
-	printf("[BIGFILE] test starting :\n");
-	printf("\tCreating a file of size: %d\n", size);
+	tprintf("[BIGFILE] test starting :\n");
+	tprintf("\tCreating a file of size: %d\n", size);
 
 	fileid = open(BIGFILE_NAME, O_WRONLY|O_CREAT|O_TRUNC, 0664);
 	if (fileid < 0) {
@@ -136,16 +136,16 @@ big_file(int size)
 		fbuffer[i] = LETTER(i);
 	}
 
-	printf("\tWriting to file.\n");
+	tprintf("\tWriting to file.\n");
 	for (i = 0; i < size; i += BUFFER_SIZE) {
 		write(fileid, fbuffer, BUFFER_SIZE);
 
 		if (!(i % (10 * BUFFER_SIZE))) {
-			printf("\rBW : %d", i);
+			tprintf("\rBW : %d", i);
 		}
 	}
 
-	printf("\n\tReading from file.\n");
+	tprintf("\n\tReading from file.\n");
 	close(fileid);
 
 	fileid = open(BIGFILE_NAME, O_RDONLY);
@@ -164,7 +164,7 @@ big_file(int size)
 	}
 
 	if (!(i % (10 * BUFFER_SIZE))) {
-		printf("\rBR : %d", i);
+		tprintf("\rBR : %d", i);
 	}
 
 	/* Check to see that the data is consistent : */
@@ -181,7 +181,7 @@ big_file(int size)
 		err(1, "[BIGFILE]: %s: remove", BIGFILE_NAME);
 	}
 
-	printf("\n[BIGFILE] : Success!\n");
+	tprintf("\n[BIGFILE] : Success!\n");
 }
 
 /* ===================================================
@@ -195,7 +195,7 @@ concur(void)
 	int i, fd;
 	int r1, r2, w1;
 
-	printf("Spawning 2 readers, 1 writer.\n");
+	tprintf("Spawning 2 readers, 1 writer.\n");
 
 
 	fd = open(FNAME, O_WRONLY|O_CREAT|O_TRUNC, 0664);
@@ -203,7 +203,7 @@ concur(void)
 		err(1, "[CONCUR]: %s: open", FNAME);
 	}
 
-	printf("Initializing test file: ");
+	tprintf("Initializing test file: ");
 
 	for (i = 0; i < SECTOR_SIZE + 1; i++) {
 		cbuffer[i] = READCHAR;
@@ -216,13 +216,13 @@ concur(void)
 
 	close(fd);
 
-	printf("Done initializing. Starting processes...\n");
+	tprintf("Done initializing. Starting processes...\n");
 
 	r1 = forkoff(subproc_read);
 	w1 = forkoff(subproc_write);
 	r2 = forkoff(subproc_read);
 
-	printf("Waiting for processes.\n");
+	tprintf("Waiting for processes.\n");
 
 	dowait(r1);
 	dowait(r2);
@@ -232,7 +232,7 @@ concur(void)
 		err(1, "[CONCUR]: %s: remove", FNAME);
 	}
 
-	printf("[CONCUR] Done!\n");
+	tprintf("[CONCUR] Done!\n");
 }
 
 /* ===================================================
@@ -253,14 +253,14 @@ dir_test(int depth)
 	for (i = 0; i < depth; i++) {
 		strcat(dirname, tmp);
 
-		printf("\tCreating dir : %s\n", dirname);
+		tprintf("\tCreating dir : %s\n", dirname);
 
 		if (mkdir(dirname, 0775) < 0) {
 			err(1, "[DIRTEST]: %s: mkdir", dirname);
 		}
 
 		strcat(dirname, fmp);
-		printf("\tCreating file: %s\n", dirname);
+		tprintf("\tCreating file: %s\n", dirname);
 
 		fd = open(dirname, O_WRONLY|O_CREAT|O_TRUNC, 0664);
 		if (fd<0) {
@@ -270,19 +270,19 @@ dir_test(int depth)
 		dirname[strlen(dirname) - strlen(fmp)] = '\0';
 	}
 
-	printf("[DIRTEST] : Passed directory creation test.\n");
+	tprintf("[DIRTEST] : Passed directory creation test.\n");
 
 	for (i = 0; i < depth; i++) {
 		strcat(dirname, fmp);
 
-		printf("\tDeleting file: %s\n", dirname);
+		tprintf("\tDeleting file: %s\n", dirname);
 
 		if (remove(dirname)) {
 			 err(1, "[DIRTEST]: %s: remove", dirname);
 		}
 
 		dirname[strlen(dirname) - strlen(fmp)] = '\0';
-		printf("\tRemoving dir : %s\n", dirname);
+		tprintf("\tRemoving dir : %s\n", dirname);
 
 		if (rmdir(dirname)) {
 			err(1, "[DIRTEST]: %s: rmdir", dirname);
@@ -291,8 +291,8 @@ dir_test(int depth)
 		dirname[strlen(dirname) - strlen(tmp)] = '\0';
 	}
 
-	printf("[DIRTEST] : Passed directory removal test.\n");
-	printf("[DIRTEST] : Success!\n");
+	tprintf("[DIRTEST] : Passed directory removal test.\n");
+	tprintf("[DIRTEST] : Success!\n");
 }
 
 /* ===================================================
@@ -325,21 +325,21 @@ main(int argc, char * argv[])
 	}
 
 	if (tv & RUNBIGFILE) {
-		printf("[BIGFILE] : Run #1\n");
+		tprintf("[BIGFILE] : Run #1\n");
 		big_file(BIGFILE_SIZE);
-		printf("[BIGFILE] : Run #2\n");
+		tprintf("[BIGFILE] : Run #2\n");
 		big_file(BIGFILE_SIZE);
 	}
 
 	if (tv & RUNDIRTEST) {
-		printf("[DIRTEST] : Run #1\n");
+		tprintf("[DIRTEST] : Run #1\n");
 		dir_test(DIR_DEPTH);
-		printf("[DIRTEST] : Run #2\n");
+		tprintf("[DIRTEST] : Run #2\n");
 		dir_test(DIR_DEPTH);
 	}
 
 	if (tv & RUNCONCUR) {
-		printf("[CONCUR]\n");
+		tprintf("[CONCUR]\n");
 		concur();
 	}
 	return 0;
diff --git a/userland/testbin/f_test/f_write.c b/userland/testbin/f_test/f_write.c
index 8a466d8..bf1a690 100644
--- a/userland/testbin/f_test/f_write.c
+++ b/userland/testbin/f_test/f_write.c
@@ -67,7 +67,7 @@ subproc_write(void)
 		buffer[i] = WRITECHAR;
 	}
 
-	printf("File Writer starting ...\n");
+	tprintf("File Writer starting ...\n");
 
 	fd = open(FNAME, O_WRONLY);
 	if (fd < 0) {
@@ -81,5 +81,5 @@ subproc_write(void)
 
 	close(fd);
 
-	printf("File Write exited successfully!\n");
+	tprintf("File Write exited successfully!\n");
 }
diff --git a/userland/testbin/factorial/factorial.c b/userland/testbin/factorial/factorial.c
index d0b229b..85e5fad 100644
--- a/userland/testbin/factorial/factorial.c
+++ b/userland/testbin/factorial/factorial.c
@@ -32,6 +32,7 @@
 #include <unistd.h>
 #include <assert.h>
 #include <err.h>
+#include <test161/test161.h>
 
 #define _PATH_SELF "/testbin/factorial"
 
@@ -245,9 +246,12 @@ main(int argc, char *argv[])
 	}
 	else if (argc == 3) {
 		if (!strcmp(argv[1], "1") || !strcmp(argv[1], "0")) {
-			printf("%s\n", argv[2]);
+			nprintf("\n");
+			tprintf("%s\n", argv[2]);
+			secprintf(SECRET, argv[2], "/testbin/factorial");
 		}
 		else {
+			nprintf(".");
 			number_init(&n1, argv[1]);
 			number_init(&n2, argv[2]);
 			number_init(&multbuf, "0");
diff --git a/userland/testbin/faulter/faulter.c b/userland/testbin/faulter/faulter.c
index 98dc4f0..42f3544 100644
--- a/userland/testbin/faulter/faulter.c
+++ b/userland/testbin/faulter/faulter.c
@@ -45,12 +45,12 @@ main(void)
 {
 	volatile int i;
 
-	printf("\nEntering the faulter program - I should die immediately\n");
+	tprintf("\nEntering the faulter program - I should die immediately\n");
 	i = *(int *)REALLY_BIG_ADDRESS;
 
 	// gcc 4.8 improperly demands this
 	(void)i;
 
-	printf("I didn't get killed!  Program has a bug\n");
+	tprintf("I didn't get killed!  Program has a bug\n");
 	return 0;
 }
diff --git a/userland/testbin/filetest/filetest.c b/userland/testbin/filetest/filetest.c
index ae93c38..7d7d4df 100644
--- a/userland/testbin/filetest/filetest.c
+++ b/userland/testbin/filetest/filetest.c
@@ -103,6 +103,6 @@ main(int argc, char *argv[])
 	if (rv<0) {
 		err(1, "%s: remove", file);
 	}
-	printf("Passed filetest.\n");
+	tprintf("Passed filetest.\n");
 	return 0;
 }
diff --git a/userland/testbin/forkbomb/forkbomb.c b/userland/testbin/forkbomb/forkbomb.c
index 6db265b..01af4c2 100644
--- a/userland/testbin/forkbomb/forkbomb.c
+++ b/userland/testbin/forkbomb/forkbomb.c
@@ -49,6 +49,11 @@
 
 #include <unistd.h>
 #include <err.h>
+#include <time.h>
+#include <test161/test161.h>
+
+#define TEST_DURATION 10
+#define LOCAL_SUCCESS "SUCCESS"
 
 static volatile int pid;
 
@@ -57,8 +62,40 @@ main(void)
 {
 	int i;
 
+	time_t start_time_s, time_now_s;
+	unsigned long start_time_ns, time_now_ns;
+	__time(&start_time_s, &start_time_ns);
+	int parent_pid = getpid();
+	int did_print = 0;
+	int iters = 0;
+
+	// Do not remove!
+	// We need to cause page faults on the static secprintf buffers so the
+	// pages are available when we print success. With on-demand page allocation,
+	// we will probably be out of pages by the time we try to print success.
+	secprintf(SECRET, "!!< Starting Forkbbbboooommmmbbbb >!!", "/testbin/forkbomb");
+
+	// And now for the success string
+	printf("This should print %s after 10s\n", LOCAL_SUCCESS);
+
 	while (1) {
 		fork();
+		// Only parent gets to print
+		if(getpid() == parent_pid) {
+			TEST161_LPROGRESS(0);
+			if (iters > 0 && iters % 20 == 0) {
+				putchar('\n');
+			}
+			iters++;
+
+			__time(&time_now_s, &time_now_ns);
+			if (time_now_s - start_time_s > TEST_DURATION && !did_print) {
+				did_print = 1;
+				// We need to print this using secprintf so that it uses
+				// the same page we warmed up earlier.
+				secprintf(SECRET, LOCAL_SUCCESS, "/testbin/forkbomb");
+			}
+		}
 
 		pid = getpid();
 
diff --git a/userland/testbin/forktest/forktest.c b/userland/testbin/forktest/forktest.c
index 4f7fed3..bcefe62 100644
--- a/userland/testbin/forktest/forktest.c
+++ b/userland/testbin/forktest/forktest.c
@@ -37,10 +37,16 @@
  */
 
 #include <unistd.h>
+#include <fcntl.h>
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <err.h>
+#include <test161/test161.h>
+
+#define FORKTEST_FILENAME_BASE "forktest"
+
+static char filename[32];
 
 /*
  * This is used by all processes, to try to help make sure all
@@ -48,6 +54,18 @@
  */
 static volatile int mypid;
 
+/*
+ * Helper function to do pow()
+ */
+static
+int pow_int(int x, int y) {
+	int i;
+	int result = 1;
+	for(i = 0; i < y; i++)
+		result *= x;
+	return result;
+}
+
 /*
  * Helper function for fork that prints a warning on error.
  */
@@ -77,6 +95,7 @@ check(void)
 	mypid = getpid();
 
 	/* Make sure each fork has its own address space. */
+	nprintf(".");
 	for (i=0; i<800; i++) {
 		volatile int seenpid;
 		seenpid = mypid;
@@ -114,13 +133,13 @@ dowait(int nowait, int pid)
 
 	if (!nowait) {
 		if (waitpid(pid, &x, 0)<0) {
-			warn("waitpid");
+			errx(1, "waitpid");
 		}
 		else if (WIFSIGNALED(x)) {
-			warnx("pid %d: signal %d", pid, WTERMSIG(x));
+			errx(1, "pid %d: signal %d", pid, WTERMSIG(x));
 		}
 		else if (WEXITSTATUS(x) != 0) {
-			warnx("pid %d: exit %d", pid, WEXITSTATUS(x));
+			errx(1, "pid %d: exit %d", pid, WEXITSTATUS(x));
 		}
 	}
 }
@@ -141,17 +160,42 @@ test(int nowait)
 	 * to prevent wait/exit problems if fork corrupts memory.
 	 */
 
+	/*
+	 * Guru: We have a problem here.
+	 * We need to write the output to a file since test161 is
+	 * supposed to be as simple as possible. This requires the
+	 * test to tell test161 whether it passed or succeeded.
+	 * We cannot lseek and read stdout, to check the output,
+	 * so we need to write the output to a file and then check it later.
+	 *
+	 * So far so good. However, if in the future, forktest is
+	 * going to be combined with triple/quint/etc, then the filename
+	 * cannot be the same across multiple copies. So we need a
+	 * unique filename per instance of forktest.
+	 * So...
+	 */
+	snprintf(filename, 32, "%s-%d.bin", FORKTEST_FILENAME_BASE, getpid());
+	int fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC);
+	if(fd < 3) {
+		// 0, 1, 2 are stdin, stdout, stderr
+		err(1, "Failed to open file to write data into\n");
+	}
+
 	pid0 = dofork();
-	putchar('A');
+	nprintf(".");
+	write(fd, "A", 1);
 	check();
 	pid1 = dofork();
-	putchar('B');
+	nprintf(".");
+	write(fd, "B", 1);
 	check();
 	pid2 = dofork();
-	putchar('C');
+	nprintf(".");
+	write(fd, "C", 1);
 	check();
 	pid3 = dofork();
-	putchar('D');
+	nprintf(".");
+	write(fd, "D", 1);
 	check();
 
 	/*
@@ -159,11 +203,57 @@ test(int nowait)
 	 * improperly.
 	 */
 	dowait(nowait, pid3);
+	nprintf(".");
 	dowait(nowait, pid2);
+	nprintf(".");
 	dowait(nowait, pid1);
+	nprintf(".");
 	dowait(nowait, pid0);
+	nprintf(".");
 
-	putchar('\n');
+	// Check if file contents are correct
+	// lseek may not be implemented..so close and reopen
+	close(fd);
+	fd = open(filename, O_RDONLY);
+	if(fd < 3) {
+		err(1, "Failed to open file for verification\n");
+	}
+	nprintf(".");
+
+	char buffer[30];
+	int len;
+	int char_idx, i;
+	int observed, expected;
+	char character = 'A';
+
+	memset(buffer, 0, 30);
+	len = read(fd, buffer, 30);
+	printf("\n%s\n", buffer);
+	if(len != 30) {
+		err(1, "Did not get expected number of characters\n");
+	}
+	nprintf(".");
+	// Check if number of instances of each character is correct
+	// 2As; 4Bs; 8Cs; 16Ds
+	for(char_idx = 0; char_idx < 4; char_idx++) {
+		nprintf(".");
+		observed = 0;
+		expected = pow_int(2, char_idx + 1);
+		for(i = 0; i < 30; i++) {
+			// In C, char can be directly converted to an ASCII index
+			// So, A is 65, B is 66, ...
+			if(buffer[i] == character + char_idx) {
+				observed++;
+			}
+		}
+		if(observed != expected) {
+			// Failed
+			err(1, "Failed! Expected %d%cs..observed: %d\n", expected, character + char_idx, observed);
+		}
+	}
+	nprintf("\n");
+	success(TEST161_SUCCESS, SECRET, "/testbin/forktest");
+	close(fd);
 }
 
 int
diff --git a/userland/testbin/frack/check.c b/userland/testbin/frack/check.c
index fea6783..b671163 100644
--- a/userland/testbin/frack/check.c
+++ b/userland/testbin/frack/check.c
@@ -2148,7 +2148,7 @@ doindent(unsigned depth)
 	unsigned i;
 
 	for (i=0; i<depth; i++) {
-		printf("   ");
+		tprintf("   ");
 	}
 }
 
@@ -2174,17 +2174,17 @@ printdiffs(unsigned indent, struct fsobject *obja, struct fsobject *objb)
 		     entb = entb->next) {
 			if (enta->name == entb->name) {
 				doindent(indent);
-				printf("%s", name_get(enta->name));
+				tprintf("%s", name_get(enta->name));
 				if (enta->obj->isdir &&
 				    !entb->obj->isdir) {
-					printf(": expected dir, found file;");
-					printf(" %u names missing.\n",
+					tprintf(": expected dir, found file;");
+					tprintf(" %u names missing.\n",
 					       count_subtree(enta->obj) - 1);
 				}
 				else if (!enta->obj->isdir &&
 					 entb->obj->isdir) {
-					printf(": expected file, found dir;");
-					printf(" %u extra names.\n",
+					tprintf(": expected file, found dir;");
+					tprintf(" %u extra names.\n",
 					       count_subtree(entb->obj) - 1);
 				}
 				else if (!enta->obj->isdir &&
@@ -2194,18 +2194,18 @@ printdiffs(unsigned indent, struct fsobject *obja, struct fsobject *objb)
 					alen = enta->obj->obj_file.len;
 					blen = entb->obj->obj_file.len;
 					if (alen == blen) {
-						printf("\t\t%lld bytes (ok)\n",
+						tprintf("\t\t%lld bytes (ok)\n",
 						       alen);
 					}
 					else {
-						printf(": found %lld bytes, "
+						tprintf(": found %lld bytes, "
 						       "expected %lld "
 						       "bytes.\n",
 						       blen, alen);
 					}
 				}
 				else {
-					printf("/\n");
+					tprintf("/\n");
 					printdiffs(indent + 1,
 						   enta->obj, entb->obj);
 				}
@@ -2215,13 +2215,13 @@ printdiffs(unsigned indent, struct fsobject *obja, struct fsobject *objb)
 		}
 		if (!found) {
 			doindent(indent);
-			printf("%s: missing ", name_get(enta->name));
+			tprintf("%s: missing ", name_get(enta->name));
 			if (enta->obj->isdir) {
-				printf("subtree with %u names.\n",
+				tprintf("subtree with %u names.\n",
 				       count_subtree(enta->obj) - 1);
 			}
 			else {
-				printf("file\n");
+				tprintf("file\n");
 			}
 		}
 	}
@@ -2238,13 +2238,13 @@ printdiffs(unsigned indent, struct fsobject *obja, struct fsobject *objb)
 		}
 		if (!found) {
 			doindent(indent);
-			printf("%s: extra ", name_get(entb->name));
+			tprintf("%s: extra ", name_get(entb->name));
 			if (entb->obj->isdir) {
-				printf("subtree with %u names.\n",
+				tprintf("subtree with %u names.\n",
 				       count_subtree(entb->obj) - 1);
 			}
 			else {
-				printf("file\n");
+				tprintf("file\n");
 			}
 		}
 	}
@@ -2326,7 +2326,7 @@ checkfilezeros(int fd, const char *namestr, off_t start, off_t end)
 	unsigned poison = 0, trash = 0;
 	off_t origstart = start;
 
-	printf("   %lld - %lld (expecting zeros)\n", start, end);
+	tprintf("   %lld - %lld (expecting zeros)\n", start, end);
 
 	if (lseek(fd, start, SEEK_SET) == -1) {
 		err(1, "%s: lseek to %lld", namestr, start);
@@ -2356,19 +2356,19 @@ checkfilezeros(int fd, const char *namestr, off_t start, off_t end)
 		start += ret;
 	}
 	if (poison > 0 || trash > 0) {
-		printf("ERROR: File %s: expected zeros from %lld to %lld; "
+		tprintf("ERROR: File %s: expected zeros from %lld to %lld; "
 		       "found",
 		       namestr, origstart, end);
 		if (poison > 0) {
-			printf(" %u poison bytes", poison);
+			tprintf(" %u poison bytes", poison);
 			if (trash > 0) {
-				printf(" and");
+				tprintf(" and");
 			}
 		}
 		if (trash > 0) {
-			printf(" %u trash bytes", trash);
+			tprintf(" %u trash bytes", trash);
 		}
-		printf("\n");
+		tprintf("\n");
 	}
 }
 
@@ -2440,7 +2440,7 @@ checkfiledata(int fd, const char *namestr, unsigned code, unsigned seq,
 		checkend = regionend;
 	}
 
-	printf("   %lld - %lld\n", checkstart, checkend);
+	tprintf("   %lld - %lld\n", checkstart, checkend);
 
 	readfiledata(fd, namestr,
 		     regionstart, checkstart, checkend, regionend);
@@ -2695,7 +2695,7 @@ checkonefilecontents(const char *namestr, struct fsobject *file,
 			return;
 		}
 		assert(change->type == FC_WRITE);
-		printf("ERROR: File %s is zero length but was expected to "
+		tprintf("ERROR: File %s is zero length but was expected to "
 		       "contain at least %lld bytes at offset %lld!\n",
 		       namestr, change->fc_write.pos, change->fc_write.len);
 		close(fd);
@@ -2704,7 +2704,7 @@ checkonefilecontents(const char *namestr, struct fsobject *file,
 
 	/* XXX: this check is wrong too. */
 	if (change->type == FC_CREAT) {
-		printf("ERROR: File %s was never written to but has "
+		tprintf("ERROR: File %s was never written to but has "
 		       "length %lld\n",
 		       namestr, file->obj_file.len);
 		close(fd);
@@ -2741,12 +2741,12 @@ checkonefilecontents(const char *namestr, struct fsobject *file,
 	 */
 	while (!change_is_present(fd, namestr, file->obj_file.len, change)) {
 		if (change->version < okversion) {
-			printf("File %s: change for version %u is missing\n",
+			tprintf("File %s: change for version %u is missing\n",
 			       namestr, change->version);
 		}
 		change = backup_for_file(change->prev,file->obj_file.identity);
 		if (change == NULL) {
-			printf("File %s: no matching version found\n",
+			tprintf("File %s: no matching version found\n",
 			       namestr);
 			close(fd);
 			return;
@@ -2781,18 +2781,18 @@ checkallfilecontents(struct fsobject *dir, struct fschange *change)
 	for (de = dir->obj_dir.entries; de != NULL; de = de->next) {
 		namestr = name_get(de->name);
 		if (de->obj->isdir) {
-			printf(" >>> Entering %s\n", namestr);
+			tprintf(" >>> Entering %s\n", namestr);
 			if (chdir(namestr)) {
 				err(1, "%s: chdir", namestr);
 			}
 			checkallfilecontents(de->obj, change);
-			printf(" <<< Leaving %s\n", namestr);
+			tprintf(" <<< Leaving %s\n", namestr);
 			if (chdir("..")) {
 				err(1, "..: chdir");
 			}
 		}
 		else {
-			printf("%s...\n", namestr);
+			tprintf("%s...\n", namestr);
 			checkonefilecontents(namestr, de->obj, change);
 		}
 	}
@@ -2813,7 +2813,7 @@ checkfs(void)
 	/*
 	 * We just built the model; talk about it.
 	 */
-	printf("Established %u versions across %u directories and %u files\n",
+	tprintf("Established %u versions across %u directories and %u files\n",
 	       changes->version + 1, nextdirnum, nextfilenum);
 
 	/*
@@ -2821,7 +2821,7 @@ checkfs(void)
 	 * FOUND holding the found volume state.
 	 */
 	inspectfs();
-	printf("Found %u subdirs and %u files on the volume\n",
+	tprintf("Found %u subdirs and %u files on the volume\n",
 	       found_subdirs, found_files);
 
 	/*
@@ -2856,7 +2856,7 @@ checkfs(void)
 			best = change;
 			bestscore = score;
 		}
-		//printf("version %u score %u\n", change->version, score);
+		//tprintf("version %u score %u\n", change->version, score);
 		change = change->next;
 	}
 	assert(best != NULL);
@@ -2874,9 +2874,9 @@ checkfs(void)
 		 * differences. XXX: this results in not checking file
 		 * data...
 		 */
-		printf("FAILURE: Directory tree does not match on any "
+		tprintf("FAILURE: Directory tree does not match on any "
 		       "version.\n");
-		printf("Best version is %u; describing differences:\n",
+		tprintf("Best version is %u; describing differences:\n",
 		       best->version);
 		printdiffs(1, state, found);
 		return;
@@ -2886,9 +2886,9 @@ checkfs(void)
 	 * Ok, we did get an exact match. Print it.
 	 */
 
-	printf("Directory tree matched in version %u.\n", best->version);
+	tprintf("Directory tree matched in version %u.\n", best->version);
 	if (best->partial) {
-		printf("WARNING: this is a version from a partially committed "
+		tprintf("WARNING: this is a version from a partially committed "
 		       "operation.\n");
 	}
 
@@ -2905,7 +2905,7 @@ checkfs(void)
 
 	/* now check the file contents */
 
-	printf("Checking file contents...\n");
+	tprintf("Checking file contents...\n");
 	checkallfilecontents(state, best);
-	printf("Done.\n");
+	tprintf("Done.\n");
 }
diff --git a/userland/testbin/frack/data.c b/userland/testbin/frack/data.c
index dbaa26f..a4563dc 100644
--- a/userland/testbin/frack/data.c
+++ b/userland/testbin/frack/data.c
@@ -165,7 +165,7 @@ data_matches(const char *namestr, off_t regionoffset,
 		}
 		else if (zero_at(where, howmuch)) {
 			if (where >= zerostart) {
-				printf("WARNING: file %s range %lld-%lld is "
+				tprintf("WARNING: file %s range %lld-%lld is "
 				       "zeroed\n",
 				       namestr, regionoffset + where,
 				       regionoffset + where + howmuch);
@@ -176,7 +176,7 @@ data_matches(const char *namestr, off_t regionoffset,
 		}
 		else if (poison_at(where, howmuch)) {
 			if (where >= zerostart) {
-				printf("ERROR: file %s range %lld-%lld is "
+				tprintf("ERROR: file %s range %lld-%lld is "
 				       "poisoned\n",
 				       namestr, regionoffset + where,
 				       regionoffset + where + howmuch);
@@ -205,7 +205,7 @@ data_check(const char *namestr, off_t regionoffset,
 
 	if (!data_matches(namestr, regionoffset,
 			  code, seq, zerostart, len, checkstart, checklen)) {
-		printf("ERROR: file %s range %lld-%lld contains garbage\n",
+		tprintf("ERROR: file %s range %lld-%lld contains garbage\n",
 		       namestr, regionoffset + checkstart,
 		       regionoffset + checkstart + checklen);
 	}
diff --git a/userland/testbin/frack/do.c b/userland/testbin/frack/do.c
index 059cf2c..3533113 100644
--- a/userland/testbin/frack/do.c
+++ b/userland/testbin/frack/do.c
@@ -72,7 +72,7 @@ do_createfile(unsigned name)
 	if (fd < 0) {
 		err(1, "%s: create", namestr);
 	}
-	printf("create %s\n", namestr);
+	tprintf("create %s\n", namestr);
 	return fd;
 }
 
@@ -122,7 +122,7 @@ do_write(int fd, unsigned name, unsigned code, unsigned seq,
 		done += ret;
 	}
 
-	printf("write %s: %lld at %lld\n", namestr, len, pos);
+	tprintf("write %s: %lld at %lld\n", namestr, len, pos);
 }
 
 void
@@ -134,7 +134,7 @@ do_truncate(int fd, unsigned name, off_t len)
 	if (ftruncate(fd, len) == -1) {
 		err(1, "%s: truncate to %lld", namestr, len);
 	}
-	printf("truncate %s: to %lld\n", namestr, len);
+	tprintf("truncate %s: to %lld\n", namestr, len);
 }
 
 void
@@ -146,7 +146,7 @@ do_mkdir(unsigned name)
 	if (mkdir(namestr, 0775) == -1) {
 		err(1, "%s: mkdir", namestr);
 	}
-	printf("mkdir %s\n", namestr);
+	tprintf("mkdir %s\n", namestr);
 }
 
 void
@@ -158,7 +158,7 @@ do_rmdir(unsigned name)
 	if (rmdir(namestr) == -1) {
 		err(1, "%s: rmdir", namestr);
 	}
-	printf("rmdir %s\n", namestr);
+	tprintf("rmdir %s\n", namestr);
 }
 
 void
@@ -170,7 +170,7 @@ do_unlink(unsigned name)
 	if (remove(namestr) == -1) {
 		err(1, "%s: remove", namestr);
 	}
-	printf("remove %s\n", namestr);
+	tprintf("remove %s\n", namestr);
 }
 
 void
@@ -183,7 +183,7 @@ do_link(unsigned from, unsigned to)
 	if (link(fromstr, tostr) == -1) {
 		err(1, "link %s to %s", fromstr, tostr);
 	}
-	printf("link %s %s\n", fromstr, tostr);
+	tprintf("link %s %s\n", fromstr, tostr);
 }
 
 void
@@ -196,7 +196,7 @@ do_rename(unsigned from, unsigned to)
 	if (rename(fromstr, tostr) == -1) {
 		err(1, "rename %s to %s", fromstr, tostr);
 	}
-	printf("rename %s %s\n", fromstr, tostr);
+	tprintf("rename %s %s\n", fromstr, tostr);
 }
 
 void
@@ -216,7 +216,7 @@ do_renamexd(unsigned fromdir, unsigned from, unsigned todir, unsigned to)
 	if (rename(frombuf, tobuf) == -1) {
 		err(1, "rename %s to %s", frombuf, tobuf);
 	}
-	printf("rename %s %s\n", frombuf, tobuf);
+	tprintf("rename %s %s\n", frombuf, tobuf);
 }
 
 void
@@ -228,7 +228,7 @@ do_chdir(unsigned name)
 	if (chdir(namestr) == -1) {
 		err(1, "chdir: %s", namestr);
 	}
-	printf("chdir %s\n", namestr);
+	tprintf("chdir %s\n", namestr);
 }
 
 void
@@ -237,7 +237,7 @@ do_chdirup(void)
 	if (chdir("..") == -1) {
 		err(1, "chdir: ..");
 	}
-	printf("chdir ..\n");
+	tprintf("chdir ..\n");
 }
 
 void
@@ -246,6 +246,6 @@ do_sync(void)
 	if (sync()) {
 		warn("sync");
 	}
-	printf("sync\n");
-	printf("----------------------------------------\n");
+	tprintf("sync\n");
+	tprintf("----------------------------------------\n");
 }
diff --git a/userland/testbin/frack/main.c b/userland/testbin/frack/main.c
index 1a0c7e8..776379d 100644
--- a/userland/testbin/frack/main.c
+++ b/userland/testbin/frack/main.c
@@ -132,13 +132,13 @@ printworkloads(void)
 {
 	unsigned i;
 
-	printf("Supported workloads:\n");
+	tprintf("Supported workloads:\n");
 	for (i=0; i<numworkloads; i++) {
-		printf("   %s", workloads[i].name);
+		tprintf("   %s", workloads[i].name);
 		if (workloads[i].argname) {
-			printf(" %s", workloads[i].argname);
+			tprintf(" %s", workloads[i].argname);
 		}
-		printf("\n");
+		tprintf("\n");
 	}
 }
 
diff --git a/userland/testbin/hash/hash.c b/userland/testbin/hash/hash.c
index 5b9fb43..8c26373 100644
--- a/userland/testbin/hash/hash.c
+++ b/userland/testbin/hash/hash.c
@@ -77,7 +77,7 @@ main(int argc, char *argv[])
 
 	close(fd);
 
-	printf("Hash : %d\n", j);
+	tprintf("Hash : %d\n", j);
 
 	return 0;
 }
diff --git a/userland/testbin/huge/huge.c b/userland/testbin/huge/huge.c
index 600118c..3fda277 100644
--- a/userland/testbin/huge/huge.c
+++ b/userland/testbin/huge/huge.c
@@ -39,45 +39,53 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <test161/test161.h>
+#include <test/test.h>
 
 #define PageSize	4096
 #define NumPages	512
 
 int sparse[NumPages][PageSize];	/* use only the first element in the row */
 
+#define PROGRESS_INTERVAL 20
+
 int
 main(void)
 {
 	int i,j;
 
-	printf("Entering the huge program - I will stress test your VM\n");
+	tprintf("Entering the huge program - I will stress test your VM\n");
 
 	/* move number in so that sparse[i][0]=i */
 	for (i=0; i<NumPages; i++) {
+		TEST161_LPROGRESS_N(i, PROGRESS_INTERVAL);
 		sparse[i][0]=i;
 	}
 
-	printf("stage [1] done\n");
+	lsay("\nstage [1] done\n");
 
 	/* increment each location 5 times */
 	for (j=0; j<5; j++) {
 		for (i=0; i<NumPages; i++) {
+			TEST161_LPROGRESS_N(i, PROGRESS_INTERVAL);
 			sparse[i][0]++;
 		}
-		printf("stage [2.%d] done\n", j);
+		lsay("\nstage [2.%d] done\n", j);
 	}
 
-	printf("stage [2] done\n");
+	lsay("\nstage [2] done\n");
 
 	/* check if the numbers are sane */
 	for (i=NumPages-1; i>=0; i--) {
+		TEST161_LPROGRESS_N(i, PROGRESS_INTERVAL);
 		if (sparse[i][0]!=i+5) {
-			printf("BAD NEWS!!! - your VM mechanism has a bug!\n");
+			lsay("BAD NEWS!!! - your VM mechanism has a bug!\n");
+			success(TEST161_FAIL, SECRET, "/testbin/huge");
 			exit(1);
 		}
 	}
 
-	printf("You passed!\n");
+	success(TEST161_SUCCESS, SECRET, "/testbin/huge");
 
 	return 0;
 }
diff --git a/userland/testbin/malloctest/malloctest.c b/userland/testbin/malloctest/malloctest.c
index 5f3d4bf..ec81053 100644
--- a/userland/testbin/malloctest/malloctest.c
+++ b/userland/testbin/malloctest/malloctest.c
@@ -77,7 +77,7 @@ geti(void)
 			break;
 		}
 		else if ((ch=='\b' || ch==127) && digits>0) {
-			printf("\b \b");
+			tprintf("\b \b");
 			val = val/10;
 			digits--;
 		}
@@ -117,11 +117,11 @@ markblock(volatile void *ptr, size_t size, unsigned bias, int doprint)
 		val = ((unsigned long)i ^ (unsigned long)bias);
 		pl[i] = val;
 		if (doprint && (i%64==63)) {
-			printf(".");
+			tprintf(".");
 		}
 	}
 	if (doprint) {
-		printf("\n");
+		tprintf("\n");
 	}
 }
 
@@ -143,9 +143,9 @@ checkblock(volatile void *ptr, size_t size, unsigned bias, int doprint)
 		val = ((unsigned long)i ^ (unsigned long)bias);
 		if (pl[i] != val) {
 			if (doprint) {
-				printf("\n");
+				tprintf("\n");
 			}
-			printf("FAILED: data mismatch at offset %lu of block "
+			tprintf("FAILED: data mismatch at offset %lu of block "
 			       "at 0x%lx: %lu vs. %lu\n",
 			       (unsigned long) (i*sizeof(unsigned long)),
 			       (unsigned long)(uintptr_t)pl,
@@ -153,11 +153,11 @@ checkblock(volatile void *ptr, size_t size, unsigned bias, int doprint)
 			return -1;
 		}
 		if (doprint && (i%64==63)) {
-			printf(".");
+			tprintf(".");
 		}
 	}
 	if (doprint) {
-		printf("\n");
+		tprintf("\n");
 	}
 
 	return 0;
@@ -178,23 +178,23 @@ test1(void)
 {
 	volatile unsigned *x;
 
-	printf("*** Malloc test 1 ***\n");
-	printf("Allocating %u bytes\n", BIGSIZE);
+	tprintf("*** Malloc test 1 ***\n");
+	tprintf("Allocating %u bytes\n", BIGSIZE);
 	x = malloc(BIGSIZE);
 	if (x==NULL) {
-		printf("FAILED: malloc failed\n");
+		tprintf("FAILED: malloc failed\n");
 		return;
 	}
 
 	markblock(x, BIGSIZE, 0, 0);
 	if (checkblock(x, BIGSIZE, 0, 0)) {
-		printf("FAILED: data corrupt\n");
+		tprintf("FAILED: data corrupt\n");
 		return;
 	}
 
 	free((void *)x);
 
-	printf("Passed malloc test 1.\n");
+	tprintf("Passed malloc test 1.\n");
 }
 
 
@@ -237,43 +237,43 @@ test2(void)
 	volatile unsigned *x;
 	size_t size;
 
-	printf("Entering malloc test 2.\n");
-	printf("Make sure you read and understand the comment in malloctest.c "
+	tprintf("Entering malloc test 2.\n");
+	tprintf("Make sure you read and understand the comment in malloctest.c "
 	       "that\nexplains the conditions this test assumes.\n\n");
 
-	printf("Testing how much memory we can allocate:\n");
+	tprintf("Testing how much memory we can allocate:\n");
 
 	for (size = HUGESIZE; (x = malloc(size))==NULL; size = size/2) {
-		printf("  %9lu bytes: failed\n", (unsigned long) size);
+		tprintf("  %9lu bytes: failed\n", (unsigned long) size);
 	}
-	printf("  %9lu bytes: succeeded\n", (unsigned long) size);
+	tprintf("  %9lu bytes: succeeded\n", (unsigned long) size);
 
-	printf("Passed part 1\n");
+	tprintf("Passed part 1\n");
 
-	printf("Touching all the words in the block.\n");
+	tprintf("Touching all the words in the block.\n");
 	markblock(x, size, 0, 1);
 
-	printf("Validating the words in the block.\n");
+	tprintf("Validating the words in the block.\n");
 	if (checkblock(x, size, 0, 1)) {
-		printf("FAILED: data corrupt\n");
+		tprintf("FAILED: data corrupt\n");
 		return;
 	}
-	printf("Passed part 2\n");
+	tprintf("Passed part 2\n");
 
 
-	printf("Freeing the block\n");
+	tprintf("Freeing the block\n");
 	free((void *)x);
-	printf("Passed part 3\n");
-	printf("Allocating another block\n");
+	tprintf("Passed part 3\n");
+	tprintf("Allocating another block\n");
 
 	x = malloc(size);
 	if (x==NULL) {
-		printf("FAILED: free didn't return the memory?\n");
+		tprintf("FAILED: free didn't return the memory?\n");
 		return;
 	}
 	free((void *)x);
 
-	printf("Passed malloc test 2.\n");
+	tprintf("Passed malloc test 2.\n");
 }
 
 
@@ -304,11 +304,11 @@ test3(void)
 	int ct=0, failed=0;
 	void *x;
 
-	printf("Entering malloc test 3.\n");
-	printf("Make sure you read and understand the comment in malloctest.c "
+	tprintf("Entering malloc test 3.\n");
+	tprintf("Make sure you read and understand the comment in malloctest.c "
 	       "that\nexplains the conditions this test assumes.\n\n");
 
-	printf("Testing how much memory we can allocate:\n");
+	tprintf("Testing how much memory we can allocate:\n");
 
 	while ((tmp = malloc(sizeof(struct test3))) != NULL) {
 
@@ -322,33 +322,33 @@ test3(void)
 
 		ct++;
 		if (ct%128==0) {
-			printf(".");
+			tprintf(".");
 		}
 	}
 
-	printf("Allocated %lu bytes\n", (unsigned long) tot);
+	tprintf("Allocated %lu bytes\n", (unsigned long) tot);
 
-	printf("Trying some more allocations which I expect to fail...\n");
+	tprintf("Trying some more allocations which I expect to fail...\n");
 
 	x = malloc(SMALLSIZE);
 	if (x != NULL) {
-		printf("FAILED: malloc(%u) succeeded\n", SMALLSIZE);
+		tprintf("FAILED: malloc(%u) succeeded\n", SMALLSIZE);
 		return;
 	}
 
 	x = malloc(MEDIUMSIZE);
 	if (x != NULL) {
-		printf("FAILED: malloc(%u) succeeded\n", MEDIUMSIZE);
+		tprintf("FAILED: malloc(%u) succeeded\n", MEDIUMSIZE);
 		return;
 	}
 
 	x = malloc(BIGSIZE);
 	if (x != NULL) {
-		printf("FAILED: malloc(%u) succeeded\n", BIGSIZE);
+		tprintf("FAILED: malloc(%u) succeeded\n", BIGSIZE);
 		return;
 	}
 
-	printf("Ok, now I'm going to free everything...\n");
+	tprintf("Ok, now I'm going to free everything...\n");
 
 	while (list != NULL) {
 		tmp = list->next;
@@ -363,20 +363,20 @@ test3(void)
 	}
 
 	if (failed) {
-		printf("FAILED: data corruption\n");
+		tprintf("FAILED: data corruption\n");
 		return;
 	}
 
-	printf("Let me see if I can allocate some more now...\n");
+	tprintf("Let me see if I can allocate some more now...\n");
 
 	x = malloc(MEDIUMSIZE);
 	if (x == NULL) {
-		printf("FAIL: Nope, I couldn't.\n");
+		tprintf("FAIL: Nope, I couldn't.\n");
 		return;
 	}
 	free(x);
 
-	printf("Passed malloc test 3\n");
+	tprintf("Passed malloc test 3\n");
 }
 
 ////////////////////////////////////////////////////////////
@@ -397,34 +397,34 @@ test4(void)
 	void *x, *y, *z;
 	unsigned long lx, ly, lz, overhead, zsize;
 
-	printf("Entering malloc test 4.\n");
-	printf("This test is intended for first/best-fit based mallocs.\n");
-	printf("This test may not work correctly if run after other tests.\n");
+	tprintf("Entering malloc test 4.\n");
+	tprintf("This test is intended for first/best-fit based mallocs.\n");
+	tprintf("This test may not work correctly if run after other tests.\n");
 
-	printf("Testing free list coalescing:\n");
+	tprintf("Testing free list coalescing:\n");
 
 	x = malloc(SMALLSIZE);
 	if (x==NULL) {
-		printf("FAILED: malloc(%u) failed\n", SMALLSIZE);
+		tprintf("FAILED: malloc(%u) failed\n", SMALLSIZE);
 		return;
 	}
 
 	y = malloc(MEDIUMSIZE);
 	if (y==NULL) {
-		printf("FAILED: malloc(%u) failed\n", MEDIUMSIZE);
+		tprintf("FAILED: malloc(%u) failed\n", MEDIUMSIZE);
 		return;
 	}
 
 	if (sizeof(unsigned long) < sizeof(void *)) {
-		printf("Buh? I can't fit a void * in an unsigned long\n");
-		printf("ENVIRONMENT FAILED...\n");
+		tprintf("Buh? I can't fit a void * in an unsigned long\n");
+		tprintf("ENVIRONMENT FAILED...\n");
 		return;
 	}
 
 	lx = (unsigned long)x;
 	ly = (unsigned long)y;
 
-	printf("x is 0x%lx; y is 0x%lx\n", lx, ly);
+	tprintf("x is 0x%lx; y is 0x%lx\n", lx, ly);
 
 	/*
 	 * The memory should look something like this:
@@ -436,7 +436,7 @@ test4(void)
 
 	/* This is obviously wrong. */
 	if (lx == ly) {
-		printf("FAIL: x == y\n");
+		tprintf("FAIL: x == y\n");
 		return;
 	}
 
@@ -447,11 +447,11 @@ test4(void)
 	 * or the other block's start is within the first block.)
 	 */
 	if (lx < ly && lx + SMALLSIZE > ly) {
-		printf("FAIL: y starts within x\n");
+		tprintf("FAIL: y starts within x\n");
 		return;
 	}
 	if (ly < lx && ly + MEDIUMSIZE > lx) {
-		printf("FAIL: x starts within y\n");
+		tprintf("FAIL: x starts within y\n");
 		return;
 	}
 
@@ -461,7 +461,7 @@ test4(void)
 	 * free list.
 	 */
 	if (ly < lx) {
-		printf("TEST UNSUITABLE: y is below x\n");
+		tprintf("TEST UNSUITABLE: y is below x\n");
 		return;
 	}
 
@@ -469,39 +469,39 @@ test4(void)
 	 * Compute the space used by index structures.
 	 */
 	overhead = ly - (lx + SMALLSIZE);
-	printf("Apparent block overhead: %lu\n", overhead);
+	tprintf("Apparent block overhead: %lu\n", overhead);
 
 	if (overhead > ABSURD_OVERHEAD) {
-		printf("TEST UNSUITABLE: block overhead absurdly large.\n");
+		tprintf("TEST UNSUITABLE: block overhead absurdly large.\n");
 		return;
 	}
 	if (overhead > OVERHEAD) {
-		printf("FAIL: block overhead is too large.\n");
+		tprintf("FAIL: block overhead is too large.\n");
 		return;
 	}
 
-	printf("Freeing blocks...\n");
+	tprintf("Freeing blocks...\n");
 	free(x);
 	free(y);
 
 	zsize = SMALLSIZE + MEDIUMSIZE + overhead;
 
-	printf("Now allocating %lu bytes... should reuse the space.\n", zsize);
+	tprintf("Now allocating %lu bytes... should reuse the space.\n", zsize);
 	z = malloc(zsize);
 	if (z == NULL) {
-		printf("FAIL: Allocation failed...\n");
+		tprintf("FAIL: Allocation failed...\n");
 		return;
 	}
 
 	lz = (unsigned long) z;
 
-	printf("z is 0x%lx (x was 0x%lx, y 0x%lx)\n", lz, lx, ly);
+	tprintf("z is 0x%lx (x was 0x%lx, y 0x%lx)\n", lz, lx, ly);
 
 	if (lz==lx) {
-		printf("Passed.\n");
+		tprintf("Passed.\n");
 	}
 	else {
-		printf("Failed.\n");
+		tprintf("Failed.\n");
 	}
 
 	free(z);
@@ -530,7 +530,7 @@ test567(int testno, unsigned long seed)
 	int i, n, size, failed=0;
 
 	srandom(seed);
-	printf("Seeded random number generator with %lu.\n", seed);
+	tprintf("Seeded random number generator with %lu.\n", seed);
 
 	for (i=0; i<32; i++) {
 		ptrs[i] = NULL;
@@ -544,7 +544,7 @@ test567(int testno, unsigned long seed)
 			ptrs[n] = malloc(size);
 			psizes[n] = size;
 			if (ptrs[n] == NULL) {
-				printf("\nmalloc %u failed\n", size);
+				tprintf("\nmalloc %u failed\n", size);
 				failed = 1;
 				break;
 			}
@@ -561,10 +561,10 @@ test567(int testno, unsigned long seed)
 			psizes[n] = 0;
 		}
 		if (i%256==0) {
-			printf(".");
+			tprintf(".");
 		}
 	}
-	printf("\n");
+	tprintf("\n");
 
 	for (i=0; i<32; i++) {
 		if (ptrs[i] != NULL) {
@@ -573,10 +573,10 @@ test567(int testno, unsigned long seed)
 	}
 
 	if (failed) {
-		printf("FAILED malloc test %d\n", testno);
+		tprintf("FAILED malloc test %d\n", testno);
 	}
 	else {
-		printf("Passed malloc test %d\n", testno);
+		tprintf("Passed malloc test %d\n", testno);
 	}
 }
 
@@ -584,7 +584,7 @@ static
 void
 test5(void)
 {
-	printf("Beginning malloc test 5\n");
+	tprintf("Beginning malloc test 5\n");
 	test567(5, 0);
 }
 
@@ -595,7 +595,7 @@ test6(void)
 	int fd, len;
 	unsigned long seed;
 
-	printf("Beginning malloc test 6\n");
+	tprintf("Beginning malloc test 6\n");
 
 	fd = open(_PATH_RANDOM, O_RDONLY);
 	if (fd < 0) {
@@ -619,9 +619,9 @@ test7(void)
 {
 	unsigned long seed;
 
-	printf("Beginning malloc test 7\n");
+	tprintf("Beginning malloc test 7\n");
 
-	printf("Enter random seed: ");
+	tprintf("Enter random seed: ");
 	seed = geti();
 
 	test567(7, seed);
@@ -673,12 +673,12 @@ main(int argc, char *argv[])
 	while (1) {
 		if (menu) {
 			for (i=0; tests[i].num>=0; i++) {
-				printf("  %2d  %s\n", tests[i].num,
+				tprintf("  %2d  %s\n", tests[i].num,
 				       tests[i].desc);
 			}
 			menu = 0;
 		}
-		printf("malloctest: ");
+		tprintf("malloctest: ");
 		tn = geti();
 		if (tn < 0) {
 			break;
diff --git a/userland/testbin/matmult/matmult-orig.c b/userland/testbin/matmult/matmult-orig.c
index b707347..e9632ff 100644
--- a/userland/testbin/matmult/matmult-orig.c
+++ b/userland/testbin/matmult/matmult-orig.c
@@ -75,14 +75,14 @@ main(void)
             for (k = 0; k < Dim; k++)
 		 C[i][j] += A[i][k] * B[k][j];
 
-    printf("matmult-orig finished.\n");
+    tprintf("matmult-orig finished.\n");
     r = C[Dim-1][Dim-1];
-    printf("answer is: %d (should be %d)\n", r, RIGHT);
+    tprintf("answer is: %d (should be %d)\n", r, RIGHT);
     if (r != RIGHT) {
-	    printf("FAILED\n");
+	    tprintf("FAILED\n");
     }
     else {
-	    printf("Passed.\n");
+	    tprintf("Passed.\n");
     }
     return 0;
 }
diff --git a/userland/testbin/matmult/matmult.c b/userland/testbin/matmult/matmult.c
index 6dd99a3..7dabbd1 100644
--- a/userland/testbin/matmult/matmult.c
+++ b/userland/testbin/matmult/matmult.c
@@ -41,6 +41,7 @@
 
 #include <unistd.h>
 #include <stdio.h>
+#include <test161/test161.h>
 
 #define Dim 	72	/* sum total of the arrays doesn't fit in
 			 * physical memory
@@ -58,33 +59,49 @@ main(void)
 {
     int i, j, k, r;
 
-    for (i = 0; i < Dim; i++)		/* first initialize the matrices */
-	for (j = 0; j < Dim; j++) {
-	     A[i][j] = i;
-	     B[i][j] = j;
-	     C[i][j] = 0;
+    for (i = 0; i < Dim; i++) {		/* first initialize the matrices */
+		for (j = 0; j < Dim; j++) {
+			TEST161_LPROGRESS_N(i*Dim + j, 1000);
+			A[i][j] = i;
+			B[i][j] = j;
+			C[i][j] = 0;
+		}
 	}
+	nprintf("\n");
 
-    for (i = 0; i < Dim; i++)		/* then multiply them together */
-	for (j = 0; j < Dim; j++)
-            for (k = 0; k < Dim; k++)
-		T[i][j][k] = A[i][k] * B[k][j];
+    for (i = 0; i < Dim; i++) {		/* then multiply them together */
+		for (j = 0; j < Dim; j++) {
+            for (k = 0; k < Dim; k++) {
+				TEST161_LPROGRESS_N(i*j*Dim*Dim + k, 50000);
+				T[i][j][k] = A[i][k] * B[k][j];
+			}
+		}
+	}
+	nprintf("\n");
 
-    for (i = 0; i < Dim; i++)
-	for (j = 0; j < Dim; j++)
-            for (k = 0; k < Dim; k++)
-		C[i][j] += T[i][j][k];
+    for (i = 0; i < Dim; i++) {
+		for (j = 0; j < Dim; j++) {
+            for (k = 0; k < Dim; k++) {
+				TEST161_LPROGRESS_N(i*j*Dim*Dim + k, 50000);
+				C[i][j] += T[i][j][k];
+			}
+		}
+	}
+	nprintf("\n");
 
     r = 0;
     for (i = 0; i < Dim; i++)
 	    r += C[i][i];
 
-    printf("matmult finished.\n");
-    printf("answer is: %d (should be %d)\n", r, RIGHT);
+    nprintf("matmult finished.\n");
+    nprintf("answer is: %d (should be %d)\n", r, RIGHT);
     if (r != RIGHT) {
-	    printf("FAILED\n");
+	    nprintf("FAILED\n");
+		success(TEST161_FAIL, SECRET, "/testbin/matmult");
 	    return 1;
     }
-    printf("Passed.\n");
+
+    nprintf("Passed.\n");
+	success(TEST161_SUCCESS, SECRET, "/testbin/matmult");
     return 0;
 }
diff --git a/userland/testbin/multiexec/multiexec.c b/userland/testbin/multiexec/multiexec.c
index a7d41c9..cdd1854 100644
--- a/userland/testbin/multiexec/multiexec.c
+++ b/userland/testbin/multiexec/multiexec.c
@@ -169,16 +169,13 @@ spawn(int njobs)
 	semcreate("1", &s1);
 	semcreate("2", &s2);
 
-	printf("Forking %d child processes...\n", njobs);
+	tprintf("Forking %d child processes...\n", njobs);
 
 	for (i=0; i<njobs; i++) {
 		pids[i] = fork();
 		if (pids[i] == -1) {
-			/* continue with the procs we have; cannot kill them */
-			warn("fork");
-			warnx("*** Only started %u processes ***", i);
-			njobs = i;
-			break;
+			/* abandon the other procs; no way to kill them */
+			err(1, "fork");
 		}
 		if (pids[i] == 0) {
 			/* child */
@@ -196,9 +193,9 @@ spawn(int njobs)
 
 	semopen(&s1);
 	semopen(&s2);
-	printf("Waiting for fork...\n");
+	tprintf("Waiting for fork...\n");
 	semP(&s1, njobs);
-	printf("Starting the execs...\n");
+	tprintf("Starting the execs...\n");
 	semV(&s2, njobs);
 
 	failed = 0;
@@ -222,7 +219,7 @@ spawn(int njobs)
 		warnx("%d children failed", failed);
 	}
 	else {
-		printf("Succeeded\n");
+		tprintf("Succeeded\n");
 	}
 
 	semclose(&s1);
diff --git a/userland/testbin/palin/palin.c b/userland/testbin/palin/palin.c
index 6bc476c..fe318b4 100644
--- a/userland/testbin/palin/palin.c
+++ b/userland/testbin/palin/palin.c
@@ -83,6 +83,7 @@ a canal - Panama!
 
 #include <stdio.h>
 #include <string.h>
+#include <test161/test161.h>
 
 char palindrome[8000] =
 "amanaplanacaretabanamyriadasumalacaliarahoopapintacatalpaagasanoil"
@@ -175,24 +176,24 @@ main(void)
 {
 	char *start, *end;
 
-	printf("Welcome to the palindrome tester!\n");
-	printf("I will take a large palindrome and test it.\n");
-	printf("Here it is:\n");
-	printf("%s\n", palindrome);
+	tprintf("Welcome to the palindrome tester!\n");
+	tprintf("I will take a large palindrome and test it.\n");
+	tprintf("Here it is:\n");
+	tprintf("%s\n", palindrome);
 
-	printf("Testing...");
+	tprintf("Testing...");
 	/* skip to end */
 	end = palindrome+strlen(palindrome);
 	end--;
 
 	for (start = palindrome; start <= end; start++, end--) {
-		putchar('.');
 		if (*start != *end) {
-			printf("NOT a palindrome\n");
+			success(TEST161_FAIL, SECRET, "/testbin/palin");
+			tprintf("NOT a palindrome\n");
 			return 0;
 		}
 	}
-
-	printf("IS a palindrome\n");
+	tprintf("IS a palindrome\n");
+	success(TEST161_SUCCESS, SECRET, "/testbin/palin");
 	return 0;
 }
diff --git a/userland/testbin/parallelvm/parallelvm.c b/userland/testbin/parallelvm/parallelvm.c
index a213197..31b2e58 100644
--- a/userland/testbin/parallelvm/parallelvm.c
+++ b/userland/testbin/parallelvm/parallelvm.c
@@ -45,6 +45,8 @@
 #include <stdlib.h>
 #include <unistd.h>
 #include <err.h>
+#include <test/test.h>
+#include <test161/test161.h>
 
 #define NJOBS    24
 
@@ -52,6 +54,8 @@
 #define NMATS    11
 #define JOBSIZE  ((NMATS+1)*DIM*DIM*sizeof(int))
 
+#define PROGRESS_INTERVAL 25000
+
 static const int right_answers[NJOBS] = {
         -1337312809,
 	356204544,
@@ -87,35 +91,20 @@ struct matrix {
 
 ////////////////////////////////////////////////////////////
 
-/*
- * Use this instead of just calling printf so we know each printout
- * is atomic; this prevents the lines from getting intermingled.
- */
-static
-void
-say(const char *fmt, ...)
-{
-	char buf[256];
-	va_list ap;
-	va_start(ap, fmt);
-	vsnprintf(buf, sizeof(buf), fmt, ap);
-	va_end(ap);
-	write(STDOUT_FILENO, buf, strlen(buf));
-}
-
-////////////////////////////////////////////////////////////
-
 static
 void
 multiply(struct matrix *res, const struct matrix *m1, const struct matrix *m2)
 {
-	int i, j, k;
+	int i, j, k, tot;
 
+	tot = 0;
 	for (i=0; i<DIM; i++) {
 		for (j=0; j<DIM; j++) {
 			int val=0;
 			for (k=0; k<DIM; k++) {
 				val += m1->m_data[i][k]*m2->m_data[k][j];
+				TEST161_LPROGRESS_N(tot, PROGRESS_INTERVAL);
+				tot++;
 			}
 			res->m_data[i][j] = val;
 		}
@@ -201,18 +190,19 @@ go(int mynum)
 {
 	int r;
 
-	say("Process %d (pid %d) starting computation...\n", mynum,
+	lsay("Process %d (pid %d) starting computation...\n", mynum,
 	    (int) getpid());
-
 	computeall(mynum);
 	r = answer();
 
 	if (r != right_answers[mynum]) {
-		say("Process %d answer %d: FAILED, should be %d\n",
+		tsay("Process %d answer %d: FAILED, should be %d\n",
 		    mynum, r, right_answers[mynum]);
+		success(TEST161_FAIL, SECRET, "/testbin/parallelvm");
 		exit(1);
 	}
-	say("Process %d answer %d: passed\n", mynum, r);
+
+	lsay("\nProcess %d: OK\n", mynum, r);
 	exit(0);
 }
 
@@ -329,8 +319,8 @@ makeprocs(bool dowait)
 		semcreate("2", &s2);
 	}
 
-	printf("Job size approximately %lu bytes\n", (unsigned long) JOBSIZE);
-	printf("Forking %d jobs; total load %luk\n", NJOBS,
+	tprintf("Job size approximately %lu bytes\n", (unsigned long) JOBSIZE);
+	tprintf("Forking %d jobs; total load %luk\n", NJOBS,
 	       (unsigned long) (NJOBS * JOBSIZE)/1024);
 
 	for (i=0; i<NJOBS; i++) {
@@ -341,7 +331,7 @@ makeprocs(bool dowait)
 		if (pids[i]==0) {
 			/* child */
 			if (dowait) {
-				say("Process %d forked\n", i);
+				//tsay("Process %d forked\n", i);
 				semopen(&s1);
 				semopen(&s2);
 				semV(&s1, 1);
@@ -356,9 +346,9 @@ makeprocs(bool dowait)
 	if (dowait) {
 		semopen(&s1);
 		semopen(&s2);
-		say("Waiting for fork...\n");
+		//tsay("Waiting for fork...\n");
 		semP(&s1, NJOBS);
-		say("Starting computation.\n");
+		//tsay("Starting computation.\n");
 		semV(&s2, NJOBS);
 	}
 
@@ -381,7 +371,9 @@ makeprocs(bool dowait)
 		printf("%d subprocesses failed\n", failcount);
 		exit(1);
 	}
-	printf("Test complete\n");
+	nprintf("\n");
+	tprintf("Test complete\n");
+	success(TEST161_SUCCESS, SECRET, "/testbin/parallelvm");
 
 	semclose(&s1);
 	semclose(&s2);
@@ -404,7 +396,7 @@ main(int argc, char *argv[])
 		dowait = true;
 	}
 	else {
-		printf("Usage: parallelvm [-w]\n");
+		tprintf("Usage: parallelvm [-w]\n");
 		return 1;
 	}
 	makeprocs(dowait);
diff --git a/userland/testbin/randcall/gencalls.sh b/userland/testbin/randcall/gencalls.sh
index 2276e7a..2e0c98e 100755
--- a/userland/testbin/randcall/gencalls.sh
+++ b/userland/testbin/randcall/gencalls.sh
@@ -34,6 +34,7 @@ awk < $1 '
 	printf "#include <stdlib.h>\n";
 	printf "#include <errno.h>\n";
 	printf "#include <err.h>\n";
+	printf "#include <test161/test161.h>\n";
 	printf "\n";
 	printf "#include \"extern.h\"\n";
 	printf "\n";
@@ -67,7 +68,7 @@ awk < $1 '
 	    if (i<NF) printf ", ";
 	}
 	printf ");\n";
-	printf"\tprintf(\"%%-47s\", buf);\n";
+	printf"\ttprintf(\"%%-47s\", buf);\n";
 	#printf "\tfflush(stdout);\n";
 	printf "\n";
 
@@ -88,7 +89,7 @@ awk < $1 '
 	}
 	printf ");\n";
 
-	printf "\tprintf(\" result %%d, errno %%d\\n\", result, errno);\n";
+	printf "\ttprintf(\" result %%d, errno %%d\\n\", result, errno);\n";
 	printf "\tif (dofork) {\n";
 	printf "\t\texit(0);\n";
 	printf "\t}\n";
@@ -134,9 +135,11 @@ awk < $1 '
 
 	printf "\tfor (i=0; i<count; i++) {\n";
 	printf "\t\tfor (j=0; list[j]; j++) {\n";
+	printf "\t\t\tnprintf(\".\");\n";
 	printf "\t\t\t(*list[j])(dofork);\n";
 	printf "\t\t}\n";
 	printf "\t}\n";
+	printf "nprintf(\"\\n\");\n";
 	printf "}\n";
 	printf "\n";
     }
diff --git a/userland/testbin/randcall/main.c b/userland/testbin/randcall/main.c
index 1b87a73..5ae1952 100644
--- a/userland/testbin/randcall/main.c
+++ b/userland/testbin/randcall/main.c
@@ -30,6 +30,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
+#include <test161/test161.h>
 
 #include "extern.h"
 
@@ -113,10 +114,10 @@ static
 void
 usage(void)
 {
-	printf("Usage: randcall [-f] [-c count] [-r seed] 2|3|4|all\n");
-	printf("   -f   suppress forking\n");
-	printf("   -c   set iteration count (default 100)\n");
-	printf("   -r   set pseudorandom seed (default 0)\n");
+	tprintf("Usage: randcall [-f] [-c count] [-r seed] 2|3|4|all\n");
+	tprintf("   -f   suppress forking\n");
+	tprintf("   -c   set iteration count (default 100)\n");
+	tprintf("   -r   set pseudorandom seed (default 0)\n");
 	exit(1);
 }
 
@@ -157,10 +158,11 @@ main(int argc, char *argv[])
 		}
 	}
 
-	printf("Seed: %d  Count: %d\n", seed, count);
+	tprintf("Seed: %d  Count: %d\n", seed, count);
 
 	srandom(seed);
 	trycalls(an, dofork, count);
 
+	success(TEST161_SUCCESS, SECRET, "/testbin/randcall");
 	return 0;
 }
diff --git a/userland/testbin/redirect/redirect.c b/userland/testbin/redirect/redirect.c
index cca3f49..544308b 100644
--- a/userland/testbin/redirect/redirect.c
+++ b/userland/testbin/redirect/redirect.c
@@ -43,6 +43,7 @@
 #include <string.h>
 #include <unistd.h>
 #include <err.h>
+#include <test161/test161.h>
 
 #define PATH_CAT "/bin/cat"
 #define INFILE "redirect.in"
@@ -181,16 +182,23 @@ cat(void)
 int
 main(void)
 {
-	printf("Creating %s...\n", INFILE);
+	tprintf("Creating %s...\n", INFILE);
 	mkfile();
+	nprintf(".");
 
-	printf("Running cat < %s > %s\n", INFILE, OUTFILE);
+	tprintf("Running cat < %s > %s\n", INFILE, OUTFILE);
 	cat();
+	nprintf(".");
 
-	printf("Checking %s...\n", OUTFILE);
+	tprintf("Checking %s...\n", OUTFILE);
 	chkfile();
+	nprintf(".");
 
-	printf("Passed.\n");
+	tprintf("Passed.\n");
+	nprintf(".");
+	nprintf("\n");
+
+	success(TEST161_SUCCESS, SECRET, "/testbin/redirect");
 	(void)remove(INFILE);
 	(void)remove(OUTFILE);
 	return 0;
diff --git a/userland/testbin/rmdirtest/rmdirtest.c b/userland/testbin/rmdirtest/rmdirtest.c
index a244f67..82325aa 100644
--- a/userland/testbin/rmdirtest/rmdirtest.c
+++ b/userland/testbin/rmdirtest/rmdirtest.c
@@ -116,13 +116,13 @@ static
 void
 test1(void)
 {
-	printf("Making %s\n", testdir);
+	tprintf("Making %s\n", testdir);
 	startup();
 
-	printf("Removing %s while in it\n", testdir);
+	tprintf("Removing %s while in it\n", testdir);
 	killdir();
 
-	printf("Leaving the test directory\n");
+	tprintf("Leaving the test directory\n");
 	finish();
 }
 
@@ -136,7 +136,7 @@ test2(void)
 {
 	int fd;
 
-	printf("Now trying with the directory open...\n");
+	tprintf("Now trying with the directory open...\n");
 	startup();
 	fd = open(".", O_RDONLY);
 	if (fd<0) {
@@ -162,7 +162,7 @@ test3(void)
 	char buf[PATH_MAX];
 	int fd;
 
-	printf("Checking if . exists after rmdir\n");
+	tprintf("Checking if . exists after rmdir\n");
 	startup();
 	killdir();
 
@@ -230,7 +230,7 @@ test4(void)
 	char buf[4096];
 	int fd;
 
-	printf("Checking if creating files works after rmdir...\n");
+	tprintf("Checking if creating files works after rmdir...\n");
 	startup();
 	killdir();
 
@@ -272,7 +272,7 @@ static
 void
 test5(void)
 {
-	printf("Checking if creating subdirs works after rmdir...\n");
+	tprintf("Checking if creating subdirs works after rmdir...\n");
 	startup();
 	killdir();
 
@@ -315,7 +315,7 @@ test6(void)
 	char buf[PATH_MAX];
 	int fd, len;
 
-	printf("Now trying to list the directory...\n");
+	tprintf("Now trying to list the directory...\n");
 	startup();
 	fd = open(".", O_RDONLY);
 	if (fd<0) {
@@ -399,6 +399,6 @@ main(void)
 	test6();
 	test7();
 
-	printf("Whew... survived.\n");
+	tprintf("Whew... survived.\n");
 	return 0;
 }
diff --git a/userland/testbin/rmtest/rmtest.c b/userland/testbin/rmtest/rmtest.c
index 376236c..c57d32c 100644
--- a/userland/testbin/rmtest/rmtest.c
+++ b/userland/testbin/rmtest/rmtest.c
@@ -157,7 +157,7 @@ main(void)
 		err(1, "Unexpected error reopening the file");
 	}
 
-	printf("Succeeded!\n");
+	tprintf("Succeeded!\n");
 
 	return 0;
 }
diff --git a/userland/testbin/sbrktest/sbrktest.c b/userland/testbin/sbrktest/sbrktest.c
index b4a626b..da65a00 100644
--- a/userland/testbin/sbrktest/sbrktest.c
+++ b/userland/testbin/sbrktest/sbrktest.c
@@ -35,6 +35,7 @@
 #include <unistd.h>
 #include <err.h>
 #include <errno.h>
+#include <test161/test161.h>
 
 #define _PATH_RANDOM   "random:"
 
@@ -62,7 +63,7 @@ geti(void)
 			break;
 		}
 		else if ((ch=='\b' || ch==127) && digits>0) {
-			printf("\b \b");
+			tprintf("\b \b");
 			val = val/10;
 			digits--;
 		}
@@ -141,7 +142,7 @@ static
 void
 say(const char *msg)
 {
-	/* Use one write so it's atomic (printf usually won't be) */
+	/* Use one write so it's atomic (tprintf usually won't be) */
 	write(STDOUT_FILENO, msg, strlen(msg));
 }
 
@@ -194,9 +195,9 @@ checkpage(volatile void *baseptr, unsigned pageoffset, bool neednl)
 		val = ((unsigned long)i ^ (unsigned long)pageoffset);
 		if (pl[i] != val) {
 			if (neednl) {
-				printf("\n");
+				tprintf("\n");
 			}
-			printf("FAILED: data mismatch at offset %lu of page "
+			tprintf("FAILED: data mismatch at offset %lu of page "
 			       "at 0x%lx: %lu vs. %lu\n",
 			       (unsigned long) (i*sizeof(unsigned long)),
 			       (unsigned long)(uintptr_t)pl,
@@ -241,9 +242,9 @@ checkpagelight(volatile void *baseptr, unsigned pageoffset, bool neednl)
 	pl = (volatile unsigned long *)pageptr;
 	if (pl[0] != pageoffset) {
 		if (neednl) {
-			printf("\n");
+			tprintf("\n");
 		}
-		printf("FAILED: data mismatch at offset 0 of page "
+		tprintf("FAILED: data mismatch at offset 0 of page "
 		       "at 0x%lx: %lu vs. %u\n",
 		       (unsigned long)(uintptr_t)pl,
 		       pl[0], pageoffset);
@@ -271,6 +272,37 @@ dosbrk(ssize_t size)
 	return p;
 }
 
+////////////////////////////////////////////////////////////
+// fork a child that segfaults
+
+typedef void (*segfault_fn)(void);
+
+static
+void
+expect_segfault(segfault_fn func)
+{
+	int status;
+	int result;
+	pid_t pid = dofork();
+
+	if (pid == 0) {
+		func();	// This exits
+	} else {
+		result = waitpid(pid, &status, 0);
+		if (result == -1) {
+			err(1, "waitpid");
+		}
+		else if (WIFSIGNALED(status)) {
+			if (WTERMSIG(status) != 11) {
+				errx(1, "child: Signal %d", WTERMSIG(status));
+			}
+		}
+		else  {
+			errx(1, "child exited, expected segfault");
+		}
+	}
+}
+
 ////////////////////////////////////////////////////////////
 // align the heap
 
@@ -317,14 +349,13 @@ test1(void)
 {
 	void *p;
 
-	printf("Allocating a page...\n");
+	tprintf("Allocating a page...\n");
 	p = dosbrk(PAGE_SIZE);
 	markpage(p, 0);
 	if (checkpage(p, 0, false)) {
 		errx(1, "FAILED: data corrupt");
 	}
-
-	printf("Passed sbrk test 1.\n");
+	success(TEST161_SUCCESS, SECRET, "/testbin/sbrktest");
 }
 
 /*
@@ -338,7 +369,7 @@ test2(void)
 
 	op = dosbrk(0);
 
-	printf("Allocating a page...\n");
+	tprintf("Allocating a page...\n");
 	p = dosbrk(PAGE_SIZE);
 	if (p != op) {
 		errx(1, "FAILED: sbrk grow didn't return the old break "
@@ -351,7 +382,7 @@ test2(void)
 
 	p = dosbrk(0);
 
-	printf("Freeing the page...\n");
+	tprintf("Freeing the page...\n");
 	q = dosbrk(-PAGE_SIZE);
 	if (q != p) {
 		errx(1, "FAILED: sbrk shrink didn't return the old break "
@@ -362,8 +393,7 @@ test2(void)
 		errx(1, "FAILED: sbrk shrink didn't restore the heap "
 		     "(got %p, expected %p", q, op);
 	}
-
-	printf("Passed sbrk test 2.\n");
+	success(TEST161_SUCCESS, SECRET, "/testbin/sbrktest");
 }
 
 /*
@@ -382,7 +412,7 @@ test3(void)
 
 	op = dosbrk(0);
 
-	printf("Allocating %u pages...\n", num);
+	tprintf("Allocating %u pages...\n", num);
 	p = dosbrk(PAGE_SIZE * num);
 	if (p != op) {
 		errx(1, "FAILED: sbrk grow didn't return the old break "
@@ -403,7 +433,7 @@ test3(void)
 
 	p = dosbrk(0);
 
-	printf("Freeing the pages...\n");
+	tprintf("Freeing the pages...\n");
 	q = dosbrk(-PAGE_SIZE * num);
 	if (q != p) {
 		errx(1, "FAILED: sbrk shrink didn't return the old break "
@@ -414,8 +444,7 @@ test3(void)
 		errx(1, "FAILED: sbrk shrink didn't restore the heap "
 		     "(got %p, expected %p", q, op);
 	}
-
-	printf("Passed sbrk test 3.\n");
+	success(TEST161_SUCCESS, SECRET, "/testbin/sbrktest");
 }
 
 /*
@@ -435,7 +464,7 @@ test4(void)
 
 	op = dosbrk(0);
 
-	printf("Allocating %u pages...\n", num);
+	tprintf("Allocating %u pages...\n", num);
 	p = dosbrk(PAGE_SIZE * num);
 	if (p != op) {
 		errx(1, "FAILED: sbrk grow didn't return the old break "
@@ -454,7 +483,7 @@ test4(void)
 		exit(1);
 	}
 
-	printf("Freeing the pages one at a time...\n");
+	tprintf("Freeing the pages one at a time...\n");
 	for (i=num; i-- > 0; ) {
 		(void)dosbrk(-PAGE_SIZE);
 		for (j=0; j<i; j++) {
@@ -474,8 +503,7 @@ test4(void)
 		errx(1, "FAILED: sbrk shrink didn't restore the heap "
 		     "(got %p, expected %p", q, op);
 	}
-
-	printf("Passed sbrk test 4.\n");
+	success(TEST161_SUCCESS, SECRET, "/testbin/sbrktest");
 }
 
 ////////////////////////////////////////////////////////////
@@ -487,51 +515,75 @@ test4(void)
  */
 static
 void
-test5(void)
+test5_helper(void)
 {
 	void *p;
 
 	p = dosbrk(0);
-	printf("This should produce fatal signal 11 (SIGSEGV).\n");
+	tprintf("This should produce fatal signal 11 (SIGSEGV).\n");
 	((long *)p)[10] = 0;
 	errx(1, "FAILED: I didn't crash");
 }
 
+static
+void
+test5(void)
+{
+	expect_segfault(test5_helper);
+	success(TEST161_SUCCESS, SECRET, "/testbin/sbrktest");
+}
+
 /*
  * Allocates a page and checks that the next page past it is not
  * valid. (Crashes when successful.)
  */
 static
 void
-test6(void)
+test6_helper(void)
 {
 	void *p;
 
 	(void)dosbrk(PAGE_SIZE);
 	p = dosbrk(0);
-	printf("This should produce fatal signal 11 (SIGSEGV).\n");
+	tprintf("This should produce fatal signal 11 (SIGSEGV).\n");
 	((long *)p)[10] = 0;
 	errx(1, "FAILED: I didn't crash");
 }
 
+static
+void
+test6(void)
+{
+	expect_segfault(test6_helper);
+	success(TEST161_SUCCESS, SECRET, "/testbin/sbrktest");
+}
+
 /*
  * Allocates and frees a page and checks that the page freed is no
  * longer valid. (Crashes when successful.)
  */
 static
 void
-test7(void)
+test7_helper(void)
 {
 	void *p;
 
 	(void)dosbrk(PAGE_SIZE);
 	(void)dosbrk(-PAGE_SIZE);
 	p = dosbrk(0);
-	printf("This should produce fatal signal 11 (SIGSEGV).\n");
+	tprintf("This should produce fatal signal 11 (SIGSEGV).\n");
 	((long *)p)[10] = 0;
 	errx(1, "FAILED: I didn't crash");
 }
 
+static
+void
+test7(void)
+{
+	expect_segfault(test7_helper);
+	success(TEST161_SUCCESS, SECRET, "/testbin/sbrktest");
+}
+
 /*
  * Allocates some pages, frees half of them, and checks that the page
  * past the new end of the heap is no longer valid. (Crashes when
@@ -539,18 +591,26 @@ test7(void)
  */
 static
 void
-test8(void)
+test8_helper(void)
 {
 	void *p;
 
 	(void)dosbrk(PAGE_SIZE * 12);
 	(void)dosbrk(-PAGE_SIZE * 6);
 	p = dosbrk(0);
-	printf("This should produce fatal signal 11 (SIGSEGV).\n");
+	tprintf("This should produce fatal signal 11 (SIGSEGV).\n");
 	((long *)p)[10] = 0;
 	errx(1, "FAILED: I didn't crash");
 }
 
+static
+void
+test8(void)
+{
+	expect_segfault(test8_helper);
+	success(TEST161_SUCCESS, SECRET, "/testbin/sbrktest");
+}
+
 ////////////////////////////////////////////////////////////
 // heap size
 
@@ -588,38 +648,38 @@ test9(void)
 
 #define HUGESIZE (1024 * 1024 * 1024)	/* 1G */
 
-	printf("Checking how much memory we can allocate:\n");
+	tprintf("Checking how much memory we can allocate:\n");
 	for (size = HUGESIZE; (p = sbrk(size)) == (void *)-1; size = size/2) {
-		printf("  %9lu bytes: failed\n", (unsigned long) size);
+		tprintf("  %9lu bytes: failed\n", (unsigned long) size);
 	}
-	printf("  %9lu bytes: succeeded\n", (unsigned long) size);
-	printf("Passed sbrk test 9 (part 1/5)\n");
+	tprintf("  %9lu bytes: succeeded\n", (unsigned long) size);
+	tprintf("Passed sbrk test 9 (part 1/5)\n");
 
-	printf("Touching each page.\n");
+	tprintf("Touching each page.\n");
 	pages = size / PAGE_SIZE;
 	dot = pages / 64;
 	for (i=0; i<pages; i++) {
 		markpagelight(p, i);
-		if (dot > 0 && i % dot == 0) {
-			printf(".");
+		if (dot > 0) {
+			TEST161_LPROGRESS_N(i, dot);
 		}
 	}
 	if (dot > 0) {
 		printf("\n");
 	}
 
-	printf("Testing each page.\n");
+	tprintf("Testing each page.\n");
 	bad = false;
 	for (i=0; i<pages; i++) {
 		if (checkpagelight(p, i, dot > 0)) {
 			if (dot > 0) {
-				printf("\n");
+				tprintf("\n");
 			}
 			warnx("FAILED: data corrupt");
 			bad = true;
 		}
-		if (dot > 0 && i % dot == 0) {
-			printf(".");
+		if (dot > 0) {
+			TEST161_LPROGRESS_N(i, dot);
 		}
 	}
 	if (dot > 0) {
@@ -628,19 +688,20 @@ test9(void)
 	if (bad) {
 		exit(1);
 	}
-	printf("Passed sbrk test 9 (part 2/5)\n");
+	tprintf("Passed sbrk test 9 (part 2/5)\n");
 
-	printf("Freeing the memory.\n");
+	tprintf("Freeing the memory.\n");
 	(void)dosbrk(-size);
-	printf("Passed sbrk test 9 (part 3/5)\n");
+	tprintf("Passed sbrk test 9 (part 3/5)\n");
 
-	printf("Allocating the memory again.\n");
+	tprintf("Allocating the memory again.\n");
 	(void)dosbrk(size);
-	printf("Passed sbrk test 9 (part 4/5)\n");
+	tprintf("Passed sbrk test 9 (part 4/5)\n");
 
-	printf("And really freeing it.\n");
+	tprintf("And really freeing it.\n");
 	(void)dosbrk(-size);
-	printf("Passed sbrk test 9 (all)\n");
+	tprintf("Passed sbrk test 9 (all)\n");
+	success(TEST161_SUCCESS, SECRET, "/testbin/sbrktest");
 }
 
 /*
@@ -655,16 +716,16 @@ test10(void)
 	unsigned i, n;
 	bool bad;
 
-	printf("Allocating all of memory one page at a time:\n");
+	tprintf("Allocating all of memory one page at a time:\n");
 	op = dosbrk(0);
 	n = 0;
 	while ((p = sbrk(PAGE_SIZE)) != (void *)-1) {
 		markpagelight(op, n);
 		n++;
 	}
-	printf("Got %u pages (%zu bytes).\n", n, (size_t)PAGE_SIZE * n);
+	tprintf("Got %u pages (%zu bytes).\n", n, (size_t)PAGE_SIZE * n);
 
-	printf("Now freeing them.\n");
+	tprintf("Now freeing them.\n");
 	bad = false;
 	for (i=0; i<n; i++) {
 		if (checkpagelight(op, n - i - 1, false)) {
@@ -676,14 +737,14 @@ test10(void)
 	if (bad) {
 		exit(1);
 	}
-	printf("Freed %u pages.\n", n);
+	tprintf("Freed %u pages.\n", n);
 
 	p = dosbrk(0);
 	if (p != op) {
 		errx(1, "FAILURE: break did not return to original value");
 	}
 
-	printf("Now let's see if I can allocate another page.\n");
+	tprintf("Now let's see if I can allocate another page.\n");
 	p = dosbrk(PAGE_SIZE);
 	markpage(p, 0);
 	if (checkpage(p, 0, false)) {
@@ -691,7 +752,8 @@ test10(void)
 	}
 	(void)dosbrk(-PAGE_SIZE);
 
-	printf("Passed sbrk test 10.\n");
+	tprintf("Passed sbrk test 10.\n");
+	success(TEST161_SUCCESS, SECRET, "/testbin/sbrktest");
 }
 
 ////////////////////////////////////////////////////////////
@@ -707,37 +769,34 @@ test11(void)
 	unsigned i;
 	bool bad;
 
-	printf("Allocating %u pages (%zu bytes).\n", num,
+	tprintf("Allocating %u pages (%zu bytes).\n", num,
 	       (size_t)PAGE_SIZE * num);
 	p = dosbrk(num * PAGE_SIZE);
 
-	printf("Touching the pages.\n");
+	tprintf("Touching the pages.\n");
 	for (i=0; i<num; i++) {
 		markpagelight(p, i);
-		if (i % 4 == 0) {
-			printf(".");
-		}
+		TEST161_LPROGRESS_N(i, 4);
 	}
-	printf("\n");
+	tprintf("\n");
 
-	printf("Checking the pages.\n");
+	tprintf("Checking the pages.\n");
 	bad = false;
 	for (i=0; i<num; i++) {
 		if (checkpagelight(p, i, true)) {
 			warnx("FAILED: data corrupt");
 			bad = true;
 		}
-		if (i % 4 == 0) {
-			printf(".");
-		}
+		TEST161_LPROGRESS_N(i, 4);
 	}
 	printf("\n");
 	if (bad) {
 		exit(1);
 	}
 
-	printf("Now NOT freeing the pages. They should get freed on exit.\n");
-	printf("If not, you'll notice pretty quickly.\n");
+	tprintf("Now NOT freeing the pages. They should get freed on exit.\n");
+	tprintf("If not, you'll notice pretty quickly.\n");
+	success(TEST161_SUCCESS, SECRET, "/testbin/sbrktest");
 }
 
 ////////////////////////////////////////////////////////////
@@ -756,7 +815,7 @@ test12(void)
 	pid_t pid;
 	void *p;
 
-	printf("Forking...\n");
+	tprintf("Forking...\n");
 	pid = dofork();
 	if (pid == 0) {
 		/* child */
@@ -778,7 +837,8 @@ test12(void)
 	}
 	say("Parent done.\n");
 	dowait(pid);
-	printf("Passed sbrk test 12.\n");
+	tprintf("Passed sbrk test 12.\n");
+	success(TEST161_SUCCESS, SECRET, "/testbin/sbrktest");
 }
 
 /*
@@ -791,14 +851,14 @@ test13(void)
 	pid_t pid;
 	void *p;
 
-	printf("Allocating a page...\n");
+	tprintf("Allocating a page...\n");
 	p = dosbrk(PAGE_SIZE);
 	markpage(p, 0);
 	if (checkpage(p, 0, false)) {
 		errx(1, "FAILED: data corrupt before forking");
 	}
 
-	printf("Forking...\n");
+	tprintf("Forking...\n");
 	pid = dofork();
 	if (pid == 0) {
 		/* child */
@@ -811,7 +871,8 @@ test13(void)
 		errx(1, "FAILED: data corrupt in parent");
 	}
 	dowait(pid);
-	printf("Passed sbrk test 13.\n");
+	tprintf("Passed sbrk test 13.\n");
+	success(TEST161_SUCCESS, SECRET, "/testbin/sbrktest");
 }
 
 /*
@@ -824,21 +885,21 @@ test14(void)
 	pid_t pid;
 	void *p;
 
-	printf("Allocating a page...\n");
+	tprintf("Allocating a page...\n");
 	p = dosbrk(PAGE_SIZE);
 	markpage(p, 0);
 	if (checkpage(p, 0, false)) {
 		errx(1, "FAILED: data corrupt before forking");
 	}
 
-	printf("Forking...\n");
+	tprintf("Forking...\n");
 	pid = dofork();
 	if (pid == 0) {
 		/* child */
 		if (checkpage(p, 0, false)) {
 			errx(1, "FAILED: data corrupt in child");
 		}
-		printf("Child freeing a page...\n");
+		tprintf("Child freeing a page...\n");
 		dosbrk(-PAGE_SIZE);
 		exit(0);
 	}
@@ -846,7 +907,8 @@ test14(void)
 	if (checkpage(p, 0, false)) {
 		errx(1, "FAILED: data corrupt in parent after child ran");
 	}
-	printf("Passed sbrk test 14.\n");
+	tprintf("Passed sbrk test 14.\n");
+	success(TEST161_SUCCESS, SECRET, "/testbin/sbrktest");
 }
 
 /*
@@ -863,7 +925,7 @@ test15(void)
 	unsigned i;
 	void *p;
 
-	printf("Allocating %u pages...\n", num);
+	tprintf("Allocating %u pages...\n", num);
 	p = dosbrk(PAGE_SIZE * num);
 	for (i=0; i<num; i++) {
 		markpage(p, i);
@@ -874,7 +936,7 @@ test15(void)
 		}
 	}
 
-	printf("Freeing one page...\n");
+	tprintf("Freeing one page...\n");
 	(void)dosbrk(-PAGE_SIZE);
 	num--;
 	for (i=0; i<num; i++) {
@@ -883,7 +945,7 @@ test15(void)
 		}
 	}
 
-	printf("Allocating two pages...\n");
+	tprintf("Allocating two pages...\n");
 	(void)dosbrk(PAGE_SIZE * 2);
 	markpage(p, num++);
 	markpage(p, num++);
@@ -893,7 +955,7 @@ test15(void)
 		}
 	}
 
-	printf("Forking...\n");
+	tprintf("Forking...\n");
 	pid = dofork();
 	if (pid == 0) {
 		/* child */
@@ -947,7 +1009,9 @@ test15(void)
 	}
 
 	(void)dosbrk(-PAGE_SIZE * num);
-	printf("Passed sbrk test 15.\n");
+	tprintf("Passed sbrk test 15.\n");
+	success(TEST161_SUCCESS, SECRET, "/testbin/sbrktest");
+
 }
 
 ////////////////////////////////////////////////////////////
@@ -967,7 +1031,7 @@ stresstest(unsigned long seed, bool large)
 	bool bad, neg;
 
 	srandom(seed);
-	printf("Seeded random number generator with %lu.\n", seed);
+	tprintf("Seeded random number generator with %lu.\n", seed);
 
 	op = dosbrk(0);
 
@@ -999,14 +1063,12 @@ stresstest(unsigned long seed, bool large)
 		}
 		for (j=0; j<num; j++) {
 			if (checkpagelight(op, j, true)) {
-				printf("\n");
+				tprintf("\n");
 				warnx("FAILED: data corrupt on page %u", j);
 				bad = true;
 			}
 		}
-		if (i % dot == 0) {
-			printf(".");
-		}
+		TEST161_LPROGRESS_N(i, dot);
 	}
 	printf("\n");
 	if (bad) {
@@ -1015,7 +1077,8 @@ stresstest(unsigned long seed, bool large)
 	}
 
 	dosbrk(-(num * PAGE_SIZE));
-	printf("Passed sbrk %s stress test.\n", large ? "large" : "small");
+	tprintf("Passed sbrk %s stress test.\n", large ? "large" : "small");
+	success(TEST161_SUCCESS, SECRET, "/testbin/sbrktest");
 }
 
 static
@@ -1036,7 +1099,7 @@ static
 void
 test18(void)
 {
-	printf("Enter random seed: ");
+	tprintf("Enter random seed: ");
 	stresstest(geti(), false);
 }
 
@@ -1058,10 +1121,65 @@ static
 void
 test21(void)
 {
-	printf("Enter random seed: ");
+	tprintf("Enter random seed: ");
 	stresstest(geti(), true);
 }
 
+static
+void
+test22(void)
+{
+	int i;
+	void *p, *q;
+	int num = 10;
+	int num_pages = 5 * 1024;	// 20MB
+
+	p = dosbrk(num_pages * PAGE_SIZE);
+	q = dosbrk(0);
+
+	if ((unsigned int)q - (unsigned int)p != (unsigned int)(num_pages*PAGE_SIZE)) {
+		errx(1, "Heap size not equal to expected size: p=0x%x q=0x%x", (unsigned int)p, (unsigned int)q);
+	}
+
+	// Just touch the last 10 pages
+	for (i = 0; i < num; i++) {
+		markpage(p, num_pages-(i+1));
+	}
+
+	// Check the last 10 pages
+	for (i = 0; i < num; i++) {
+		if (checkpage(p, num_pages-(i+1), false)) {
+			errx(1, "FAILED: data corrupt");
+		}
+	}
+
+	success(TEST161_SUCCESS, SECRET, "/testbin/sbrktest");
+}
+
+static
+void
+test23(void)
+{
+	// Make sure sbrk is freeing memory. This allocates, in total, just over 4M
+	// of memory, but moves the heap breakpoint in such a way that only one page
+	// should ever be required. This test doesn't make much sense to run with
+	// more than 4M or with swap enabled.
+	void *start;
+	int num_pages = 1030;
+	int num;
+
+	start = dosbrk(PAGE_SIZE);
+
+	for (num = 1; num <= num_pages; num++) {
+		TEST161_LPROGRESS(num);
+		start = dosbrk(num*PAGE_SIZE);
+		markpagelight(start, num-1);
+		checkpagelight(start, num-1, true);
+		dosbrk(-(num*PAGE_SIZE));
+	}
+	success(TEST161_SUCCESS, SECRET, "/testbin/sbrktest");
+}
+
 ////////////////////////////////////////////////////////////
 // main
 
@@ -1091,6 +1209,8 @@ static const struct {
 	{ 19, "Large stress test", test19 },
 	{ 20, "Randomized large stress test", test20 },
 	{ 21, "Large stress test with particular seed", test21 },
+	{ 22, "Large sbrk test", test22 },
+	{ 23, "Allocate 4MB in total, but free pages in between", test23 },
 };
 static const unsigned numtests = sizeof(tests) / sizeof(tests[0]);
 
@@ -1128,12 +1248,12 @@ main(int argc, char *argv[])
 	while (1) {
 		if (menu) {
 			for (j=0; j<numtests; j++) {
-				printf("  %2d  %s\n", tests[j].num,
+				tprintf("  %2d  %s\n", tests[j].num,
 				       tests[j].desc);
 			}
 			menu = false;
 		}
-		printf("sbrktest: ");
+		tprintf("sbrktest: ");
 		tn = geti();
 		if (tn < 0) {
 			break;
diff --git a/userland/testbin/schedpong/main.c b/userland/testbin/schedpong/main.c
index f03b3a2..970f53b 100644
--- a/userland/testbin/schedpong/main.c
+++ b/userland/testbin/schedpong/main.c
@@ -229,7 +229,7 @@ runit(unsigned numthinkers, unsigned numgrinders,
 	char buf[32];
 	unsigned i;
 
-	printf("Running with %u thinkers, %u grinders, and %u pong groups "
+	tprintf("Running with %u thinkers, %u grinders, and %u pong groups "
 	       "of size %u each.\n", numthinkers, numgrinders, numponggroups,
 	       ponggroupsize);
 
@@ -242,7 +242,7 @@ runit(unsigned numthinkers, unsigned numgrinders,
 		       &pids[i+2]);
 	}
 	usem_open(&startsem);
-	printf("Forking done; starting the workload.\n");
+	tprintf("Forking done; starting the workload.\n");
 	__time(&startsecs, &startnsecs);
 	Vn(&startsem, numthinkers + numgrinders +
 	   numponggroups * ponggroupsize);
@@ -252,20 +252,20 @@ runit(unsigned numthinkers, unsigned numgrinders,
 
 	openresultsfile(O_RDONLY);
 
-	printf("--- Timings ---\n");
+	tprintf("--- Timings ---\n");
 	if (numthinkers > 0) {
 		calcresult(0, startsecs, startnsecs, buf, sizeof(buf));
-		printf("Thinkers: %s\n", buf);
+		tprintf("Thinkers: %s\n", buf);
 	}
 
 	if (numgrinders > 0) {
 		calcresult(1, startsecs, startnsecs, buf, sizeof(buf));
-		printf("Grinders: %s\n", buf);
+		tprintf("Grinders: %s\n", buf);
 	}
 
 	for (i=0; i<numponggroups; i++) {
 		calcresult(i+2, startsecs, startnsecs, buf, sizeof(buf));
-		printf("Pong group %u: %s\n", i, buf);
+		tprintf("Pong group %u: %s\n", i, buf);
 	}
 
 	closeresultsfile();
diff --git a/userland/testbin/schedpong/pong.c b/userland/testbin/schedpong/pong.c
index 8bcc843..64b288d 100644
--- a/userland/testbin/schedpong/pong.c
+++ b/userland/testbin/schedpong/pong.c
@@ -100,7 +100,7 @@ pong_cyclic(unsigned id)
 			P(&sems[id]);
 		}
 #ifdef VERBOSE_PONG
-		printf(" %u", id);
+		tprintf(" %u", id);
 #else
 		if (nextid == 0 && i % 16 == 0) {
 			putchar('.');
@@ -151,7 +151,7 @@ pong_reciprocating(unsigned id)
 			P(&sems[id]);
 		}
 #ifdef VERBOSE_PONG
-		printf(" %u", id);
+		tprintf(" %u", id);
 #else
 		if (id == 0 && i % 16 == 0) {
 			putchar('.');
@@ -197,11 +197,11 @@ pong(unsigned groupid, unsigned id)
 	waitstart();
 	pong_cyclic(id);
 #ifdef VERBOSE_PONG
-	printf("--------------------------------\n");
+	tprintf("--------------------------------\n");
 #endif
 	pong_reciprocating(id);
 #ifdef VERBOSE_PONG
-	printf("--------------------------------\n");
+	tprintf("--------------------------------\n");
 #endif
 	pong_cyclic(id);
 
diff --git a/userland/testbin/sort/sort.c b/userland/testbin/sort/sort.c
index 6f90c4f..331e5d6 100644
--- a/userland/testbin/sort/sort.c
+++ b/userland/testbin/sort/sort.c
@@ -35,14 +35,17 @@
  *    Once the virtual memory assignment is complete, your system
  *    should survive this.
  */
-
+#include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 #include <err.h>
+#include <test161/test161.h>
 
 /* Larger than physical memory */
 #define SIZE  (144*1024)
 
+#define PROGRESS_INTERVAL 8000
+#define NEWLINE_FREQ 100
 
 /*
  * Quicksort.
@@ -54,6 +57,61 @@
  * Also, quicksort has somewhat more interesting memory usage patterns.
  */
 
+static unsigned iters;
+
+static inline
+void
+progress() {
+	TEST161_LPROGRESS_N(iters, PROGRESS_INTERVAL);
+	if (iters > 0 && (iters % (PROGRESS_INTERVAL * NEWLINE_FREQ)) == 0) {
+		printf("\n");
+	}
+	++iters;
+}
+
+static void *
+local_memcpy(void *dst, const void *src, size_t len)
+{
+	size_t i;
+
+	/*
+	 * memcpy does not support overlapping buffers, so always do it
+	 * forwards. (Don't change this without adjusting memmove.)
+	 *
+	 * For speedy copying, optimize the common case where both pointers
+	 * and the length are word-aligned, and copy word-at-a-time instead
+	 * of byte-at-a-time. Otherwise, copy by bytes.
+	 *
+	 * The alignment logic below should be portable. We rely on
+	 * the compiler to be reasonably intelligent about optimizing
+	 * the divides and modulos out. Fortunately, it is.
+	 */
+
+	if ((uintptr_t)dst % sizeof(long) == 0 &&
+	    (uintptr_t)src % sizeof(long) == 0 &&
+	    len % sizeof(long) == 0) {
+
+		long *d = dst;
+		const long *s = src;
+
+		for (i=0; i<len/sizeof(long); i++) {
+			progress();
+			d[i] = s[i];
+		}
+	}
+	else {
+		char *d = dst;
+		const char *s = src;
+
+		for (i=0; i<len; i++) {
+			progress();
+			d[i] = s[i];
+		}
+	}
+
+	return dst;
+}
+
 static
 void
 sort(int *arr, int size)
@@ -73,6 +131,7 @@ sort(int *arr, int size)
 	j = pivot;
 	k = 0;
 	while (i<pivot && j<size) {
+		progress();
 		if (arr[i] < arr[j]) {
 			tmp[k++] = arr[i++];
 		}
@@ -81,13 +140,15 @@ sort(int *arr, int size)
 		}
 	}
 	while (i<pivot) {
+		progress();
 		tmp[k++] = arr[i++];
 	}
 	while (j<size) {
+		progress();
 		tmp[k++] = arr[j++];
 	}
 
-	memcpy(arr, tmp, size*sizeof(int));
+	local_memcpy(arr, tmp, size*sizeof(int));
 }
 
 ////////////////////////////////////////////////////////////
@@ -116,13 +177,15 @@ check(void)
 {
 	int i;
 
+	printf("\nChecking...");
 	for (i=0; i<SIZE-1; i++) {
+		TEST161_LPROGRESS_N(i, PROGRESS_INTERVAL);
 		if (A[i] > A[i+1]) {
 			errx(1, "Failed: A[%d] is %d, A[%d] is %d",
 			     i, A[i], i+1, A[i+1]);
 		}
 	}
-	warnx("Passed.");
+	success(TEST161_SUCCESS, SECRET, "/testbin/sort");
 }
 
 int
diff --git a/userland/testbin/sparsefile/sparsefile.c b/userland/testbin/sparsefile/sparsefile.c
index 93cd5bf..a719f91 100644
--- a/userland/testbin/sparsefile/sparsefile.c
+++ b/userland/testbin/sparsefile/sparsefile.c
@@ -41,6 +41,8 @@
 #include <unistd.h>
 #include <fcntl.h>
 #include <err.h>
+#include <string.h>
+#include <test161/test161.h>
 
 int
 main(int argc, char *argv[])
@@ -57,15 +59,16 @@ main(int argc, char *argv[])
 
 	filename = argv[1];
 	size = atoi(argv[2]);
-	byte = '\n';
+	byte = '@';
 
 	if (size == 0) {
 		err(1, "Sparse files of length zero are not meaningful");
 	}
 
-	printf("Creating a sparse file of size %d\n", size);
+	tprintf("Creating a sparse file of size %d\n", size);
+	nprintf(".");
 
-	fd = open(filename, O_WRONLY|O_CREAT|O_TRUNC);
+	fd = open(filename, O_RDWR|O_CREAT|O_TRUNC);
 	if (fd < 0) {
 		err(1, "%s: create", filename);
 	}
@@ -73,6 +76,7 @@ main(int argc, char *argv[])
 	if (lseek(fd, size-1, SEEK_SET) == -1) {
 		err(1, "%s: lseek", filename);
 	}
+	nprintf(".");
 	r = write(fd, &byte, 1);
 	if (r < 0) {
 		err(1, "%s: write", filename);
@@ -80,8 +84,30 @@ main(int argc, char *argv[])
 	else if (r != 1) {
 		errx(1, "%s: write: Unexpected result count %d", filename, r);
 	}
+	nprintf(".");
 
+	// Now check this byte.
+	// First seek to the beginning and then seek back to where the byte
+	// should be.
+	if(lseek(fd, 0, SEEK_SET) == -1) {
+		err(1, "lseek failed to seek to beginning of file\n");
+	}
+	nprintf(".");
+	// Now seek back to where the byte should be
+	// While at it, also test SEEK_CUR
+	if(lseek(fd, size-1, SEEK_CUR) == -1) {
+		err(1, "lseek failed to seek to %d of file\n", size-1);
+	}
+	nprintf(".");
+	char test;
+	r = read(fd, &test, 1);
+	if(test != byte) {
+		err(1, "Byte test failed. Expected (%c) != Observed (%c)\n", byte, test);
+	}
+	nprintf(".");
 	close(fd);
 
+	nprintf("\n");
+	success(TEST161_SUCCESS, SECRET, "/testbin/sparsefile");
 	return 0;
 }
diff --git a/userland/testbin/tictac/tictac.c b/userland/testbin/tictac/tictac.c
index d65ec27..a8db7c0 100644
--- a/userland/testbin/tictac/tictac.c
+++ b/userland/testbin/tictac/tictac.c
@@ -92,7 +92,7 @@ main(void)
 			win = do_move(player);
 			print_board();
 			if (win) {
-				printf("Player %d, you WON!\n\n", player);
+				tprintf("Player %d, you WON!\n\n", player);
 				break;		/* out of for loop */
 			}
 		}
@@ -101,7 +101,7 @@ main(void)
 		 * tie game.
 		 */
 		if (!win)
-			printf("Tie Game!\n\n");
+			tprintf("Tie Game!\n\n");
 		if (!ask_yesno("Do you wish to play again?"))
 			break;			/* out of while loop */
 	}
@@ -121,9 +121,9 @@ main(void)
 void
 print_instructions(void)
 {
-	printf("Welcome to tic-tac-toe!\n");
-	printf("Player 1 always plays X and player 2 always play O\n");
-	printf("Good luck!\n\n\n");
+	tprintf("Welcome to tic-tac-toe!\n");
+	tprintf("Player 1 always plays X and player 2 always play O\n");
+	tprintf("Good luck!\n\n\n");
 }
 
 void
@@ -142,22 +142,22 @@ print_board(void)
 	int i, j;
 
 	/* Print labels across the top */
-	printf("\n    0  1  2\n");
+	tprintf("\n    0  1  2\n");
 
 	for (i = 0; i < DIM; i++) {
 		/* Print row labels */
-		printf(" %d ", i);
+		tprintf(" %d ", i);
 		for (j = 0; j < DIM; j++) {
 			switch (board[i][j]) {
-				case EMPTY: printf("   "); break;
-				case X_MARKER: printf(" X "); break;
-				case O_MARKER: printf(" O "); break;
-				default: printf("???"); break;
+				case EMPTY: tprintf("   "); break;
+				case X_MARKER: tprintf(" X "); break;
+				case O_MARKER: tprintf(" O "); break;
+				default: tprintf("???"); break;
 			}
 		}
-		printf("\n");
+		tprintf("\n");
 	}
-	printf("\n");
+	tprintf("\n");
 }
 
 /*
@@ -181,7 +181,7 @@ ask_yesno(const char *msg)
 	char answer[MAXSTRING];
 
 	while (TRUE) {
-		printf("%s [yes/no] ", msg);
+		tprintf("%s [yes/no] ", msg);
 		if (read_string(answer, MAXSTRING) < 0)
 			return(FALSE);
 		if (Strcmp(answer, "yes"))
@@ -189,7 +189,7 @@ ask_yesno(const char *msg)
 		else if (Strcmp(answer, "no"))
 			return(FALSE);
 		else
-			printf("Please answer either yes or no\n");
+			tprintf("Please answer either yes or no\n");
 	}
 }
 
@@ -216,32 +216,32 @@ do_move(int player)
 	char answer[MAXSTRING];
 	char cx;
 
-	printf("Player %d (%c), your move\n", player,
+	tprintf("Player %d (%c), your move\n", player,
 	       player == X_PLAYER ? 'X' : 'O');
 
 	while (TRUE) {
-		printf("Which row [0-%d]: ", DIM-1);
+		tprintf("Which row [0-%d]: ", DIM-1);
 		if (read_string(answer, MAXSTRING) < 0)
 			return(FALSE);
 		cx = answer[0];
 		x = cx - '0';
 		if (x < 0 || x >= DIM) {
-			printf("Invalid row; must be >= 0 and < %d\n", DIM-1);
+			tprintf("Invalid row; must be >= 0 and < %d\n", DIM-1);
 			continue;
 		}
-		printf("Which column [0-%d]: ", DIM-1);
+		tprintf("Which column [0-%d]: ", DIM-1);
 		if (read_string(answer, MAXSTRING) < 0)
 			return(FALSE);
 		cx = answer[0];
 		y = cx - '0';
 		if (y < 0 || y >= DIM) {
-			printf("Invalid column; must be >= 0 and < %d\n",
+			tprintf("Invalid column; must be >= 0 and < %d\n",
 				DIM-1);
 			continue;
 		}
 
 		if (board[x][y] != EMPTY) {
-			printf("That location is occupied; please try again\n");
+			tprintf("That location is occupied; please try again\n");
 			print_board();
 		} else
 			break;
diff --git a/userland/testbin/userthreads/userthreads.c b/userland/testbin/userthreads/userthreads.c
index 8b2bb0d..073d441 100644
--- a/userland/testbin/userthreads/userthreads.c
+++ b/userland/testbin/userthreads/userthreads.c
@@ -79,7 +79,7 @@ main(int argc, char *argv[])
 	    threadfork(BladeRunner);
     }
 
-    printf("Parent has left.\n");
+    tprintf("Parent has left.\n");
     return 0;
 }
 
@@ -93,7 +93,7 @@ BladeRunner()
 {
     while (count < MAX) {
 	if (count % 500 == 0)
-	    printf("Blade ");
+	    tprintf("Blade ");
 	count++;
     }
 }
@@ -103,7 +103,7 @@ ThreadRunner()
 {
     while (count < MAX) {
 	if (count % 513 == 0)
-	    printf(" Runner\n");
+	    tprintf(" Runner\n");
 	count++;
     }
 }
diff --git a/userland/testbin/zero/zero.c b/userland/testbin/zero/zero.c
index 868853c..48c2426 100644
--- a/userland/testbin/zero/zero.c
+++ b/userland/testbin/zero/zero.c
@@ -39,6 +39,7 @@
 #include <unistd.h>
 #include <errno.h>
 #include <err.h>
+#include <test161/test161.h>
 
 /*
  * Some initialized data. This is here to increase the chance that
@@ -78,6 +79,7 @@ check_data(void)
 	if (k != SUM_OF_DATA_STUFF) {
 		warnx("My initialized data sums to the wrong value!");
 		warnx("Got: %u  Expected: %u", k, SUM_OF_DATA_STUFF);
+		success(TEST161_FAIL, SECRET, "/testbin/zero");
 		errx(1, "FAILED");
 	}
 }
@@ -94,6 +96,7 @@ check_bss(void)
 			warnx("BSS entry at index %u (address %p) not zero!",
 			      i, &bss_stuff[i]);
 			warnx("Found: 0x%x", bss_stuff[i]);
+			success(TEST161_FAIL, SECRET, "/testbin/zero");
 			errx(1, "FAILED");
 		}
 	}
@@ -112,9 +115,10 @@ check_sbrk(void)
 	base = sbrk(SBRK_SIZE);
 	if (base == (void *)-1) {
 		if (errno == ENOSYS) {
-			printf("I guess you haven't implemented sbrk yet.\n");
+			tprintf("I guess you haven't implemented sbrk yet.\n");
 			return;
 		}
+		success(TEST161_FAIL, SECRET, "/testbin/zero");
 		err(1, "sbrk");
 	}
 
@@ -124,6 +128,7 @@ check_sbrk(void)
 			      i, &base[i]);
 			warnx("Got: 0x%x", (unsigned char)base[i]);
 			warnx("Base of sbrk region: %p", base);
+			success(TEST161_FAIL, SECRET, "/testbin/zero");
 			errx(1, "FAILED");
 		}
 	}
@@ -133,13 +138,13 @@ check_sbrk(void)
 int
 main(void)
 {
-	printf("zero: phase 1: checking .bss\n");
+	tprintf("zero: phase 1: checking .bss\n");
 	check_data();
 	check_bss();
 
-	printf("zero: phase 2: checking sbrk()\n");
+	tprintf("zero: phase 2: checking sbrk()\n");
 	check_sbrk();
 
-	printf("zero: passed\n");
+	success(TEST161_SUCCESS, SECRET, "/testbin/zero");
 	return 0;
 }