Initial Spring 2016 commit.

userland/testbin/poisondisk/Makefile

@@ -0,0 +1,16 @@
+# Makefile for poisondisk
+
+TOP=../../..
+.include "$(TOP)/mk/os161.config.mk"
+
+PROG=poisondisk
+SRCS=poisondisk.c \
+	../../sbin/mksfs/disk.c ../../sbin/mksfs/support.c
+CFLAGS+=-I../../sbin/mksfs
+HOST_CFLAGS+=-I../../sbin/mksfs
+BINDIR=/testbin
+HOSTBINDIR=/hostbin
+
+
+.include "$(TOP)/mk/os161.prog.mk"
+.include "$(TOP)/mk/os161.hostprog.mk"

userland/testbin/poisondisk/poisondisk.c

@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2013, 2014
+ *	The President and Fellows of Harvard College.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * poisondisk - fill a disk with nonzero poison values
+ * usage: poisondisk disk-image
+ */
+
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+#include <err.h>
+
+#ifdef HOST
+#include "hostcompat.h"
+#endif
+
+#include "disk.h"
+
+#define POISON_BYTE 0xa9
+#define BLOCKSIZE 512
+
+static
+void
+poison(void)
+{
+	char buf[BLOCKSIZE];
+	off_t sectors, i;
+
+	memset(buf, POISON_BYTE, sizeof(buf));
+
+	sectors = diskblocks();
+	for (i=0; i<sectors; i++) {
+		diskwrite(buf, i);
+	}
+}
+
+int
+main(int argc, char *argv[])
+{
+	if (argc != 2) {
+		errx(1, "Usage: %s disk-image", argv[0]);
+	}
+	opendisk(argv[1]);
+	poison();
+	closedisk();
+	return 0;
+}