Initial Spring 2016 commit.

userland/testbin/badcall/common_fds.c

@@ -0,0 +1,234 @@
+/*
+ * Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
+ *	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.
+ */
+
+/*
+ * Calls with invalid fds
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <limits.h>
+#include <errno.h>
+#include <err.h>
+
+#include "config.h"
+#include "test.h"
+
+
+enum rwtestmodes {
+	RW_TEST_NONE,
+	RW_TEST_RDONLY,
+	RW_TEST_WRONLY,
+};
+
+static
+int
+read_badfd(int fd)
+{
+	char buf[128];
+	return read(fd, buf, sizeof(buf));
+}
+
+static
+int
+write_badfd(int fd)
+{
+	char buf[128];
+	memset(buf, 'a', sizeof(buf));
+	return write(fd, buf, sizeof(buf));
+}
+
+
+static
+int
+close_badfd(int fd)
+{
+	return close(fd);
+}
+
+static
+int
+ioctl_badfd(int fd)
+{
+	return ioctl(fd, 0, NULL);
+}
+
+static
+int
+lseek_badfd(int fd)
+{
+	return lseek(fd, 0, SEEK_SET);
+}
+
+static
+int
+fsync_badfd(int fd)
+{
+	return fsync(fd);
+}
+
+static
+int
+ftruncate_badfd(int fd)
+{
+	return ftruncate(fd, 60);
+}
+
+static
+int
+fstat_badfd(int fd)
+{
+	struct stat sb;
+	return fstat(fd, &sb);
+}
+
+static
+int
+getdirentry_badfd(int fd)
+{
+	char buf[32];
+	return getdirentry(fd, buf, sizeof(buf));
+}
+
+static
+int
+dup2_badfd(int fd)
+{
+	/* use the +1 to avoid doing dup2(CLOSED_FD, CLOSED_FD) */
+	return dup2(fd, CLOSED_FD+1);
+}
+
+static
+void
+dup2_cleanup(void)
+{
+	close(CLOSED_FD+1);
+}
+
+////////////////////////////////////////////////////////////
+
+static
+void
+any_badfd(int (*func)(int fd), void (*cleanup)(void), const char *callname,
+	  int fd, const char *fddesc)
+{
+	int rv;
+
+	report_begin("%s using %s", callname, fddesc);
+	rv = func(fd);
+	report_check(rv, errno, EBADF);
+	if (cleanup) {
+		cleanup();
+	}
+}
+
+static
+void
+runtest(int (*func)(int fd), void (*cleanup)(void), const char *callname,
+	enum rwtestmodes rw)
+{
+	int fd;
+
+	/*
+	 * If adding cases, also see bad_dup2.c
+	 */
+
+	/* basic invalid case: fd -1 */
+	any_badfd(func, cleanup, callname, -1, "fd -1");
+
+	/* also try -5 in case -1 is special somehow */
+	any_badfd(func, cleanup, callname, -5, "fd -5");
+
+	/* try a fd we know is closed */
+	any_badfd(func, cleanup, callname, CLOSED_FD, "closed fd");
+
+	/* try a positive fd we know is out of range */
+	any_badfd(func, cleanup, callname, IMPOSSIBLE_FD, "impossible fd");
+
+	/* test for off-by-one errors */
+#ifdef OPEN_MAX
+	any_badfd(func, cleanup, callname, OPEN_MAX, "fd OPEN_MAX");
+#else
+	warnx("Warning: OPEN_MAX not defined, test skipped");
+#endif
+
+	if (rw == RW_TEST_RDONLY) {
+		fd = reopen_testfile(O_RDONLY|O_CREAT);
+		if (fd < 0) {
+			/* already printed a message */
+		}
+		else {
+			any_badfd(func, cleanup, callname, fd,
+				  "fd opened read-only");
+		}
+		close(fd);
+	}
+	if (rw == RW_TEST_WRONLY) {
+		fd = reopen_testfile(O_WRONLY|O_CREAT);
+		if (fd < 0) {
+			/* already printed a message */
+		}
+		else {
+			any_badfd(func, cleanup, callname, fd,
+				  "fd opened write-only");
+		}
+		close(fd);
+	}
+}
+
+////////////////////////////////////////////////////////////
+
+#define T(call, rw) \
+  void                                          \
+  test_##call##_fd(void)                        \
+  {                                             \
+   	runtest(call##_badfd, NULL, #call, rw); \
+  }
+
+#define TC(call, rw) \
+  void                                          \
+  test_##call##_fd(void)                        \
+  {                                             \
+   	runtest(call##_badfd, call##_cleanup, #call, rw);\
+  }
+
+T(read, RW_TEST_WRONLY);
+T(write, RW_TEST_RDONLY);
+T(close, RW_TEST_NONE);
+T(ioctl, RW_TEST_NONE);
+T(lseek, RW_TEST_NONE);
+T(fsync, RW_TEST_NONE);
+T(ftruncate, RW_TEST_RDONLY);
+T(fstat, RW_TEST_NONE);
+T(getdirentry, RW_TEST_WRONLY);
+TC(dup2, RW_TEST_NONE);