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-rw-r--r--io/tst-fcntl.c196
1 files changed, 196 insertions, 0 deletions
diff --git a/io/tst-fcntl.c b/io/tst-fcntl.c
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+/* Tests for fcntl.
+ Copyright (C) 2000 Free Software Foundation, Inc.
+ Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <paths.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+
+/* Prototype for our test function. */
+extern void do_prepare (int argc, char *argv[]);
+extern int do_test (int argc, char *argv[]);
+
+/* We have a preparation function. */
+#define PREPARE do_prepare
+
+#include "../test-skeleton.c"
+
+
+/* Name of the temporary files. */
+static char *name;
+
+void
+do_prepare (int argc, char *argv[])
+{
+ char name_len;
+
+ name_len = strlen (test_dir);
+ name = malloc (name_len + sizeof ("/fcntlXXXXXX"));
+ mempcpy (mempcpy (name, test_dir, name_len),
+ "/fcntlXXXXXX", sizeof ("/fcntlXXXXXX"));
+ add_temp_file (name);
+}
+
+
+int
+do_test (int argc, char *argv[])
+{
+ int fd;
+ int fd2;
+ int fd3;
+ struct stat64 st;
+ int val;
+ int result = 0;
+
+ /* Create the temporary file. */
+ fd = mkstemp (name);
+ if (fd == -1)
+ {
+ printf ("cannot open temporary file: %m\n");
+ return 1;
+ }
+ if (fstat64 (fd, &st) != 0)
+ {
+ printf ("cannot stat test file: %m\n");
+ return 1;
+ }
+ if (! S_ISREG (st.st_mode) || st.st_size != 0)
+ {
+ puts ("file not created correctly");
+ return 1;
+ }
+
+ /* Get the flags with fcntl(). */
+ val = fcntl (fd, F_GETFL);
+ if (val == -1)
+ {
+ printf ("fcntl(fd, F_GETFL) failed: %m\n");
+ result = 1;
+ }
+ else if ((val & O_ACCMODE) != O_RDWR)
+ {
+ puts ("temporary file not opened for read and write");
+ result = 1;
+ }
+
+ /* Set the flags to something else. */
+ if (fcntl (fd, F_SETFL, O_RDONLY) == -1)
+ {
+ printf ("fcntl(fd, F_SETFL, O_RDONLY) failed: %m\n");
+ result = 1;
+ }
+
+ val = fcntl (fd, F_GETFL);
+ if (val == -1)
+ {
+ printf ("fcntl(fd, F_GETFL) after F_SETFL failed: %m\n");
+ result = 1;
+ }
+ else if ((val & O_ACCMODE) != O_RDWR)
+ {
+ puts ("temporary file access mode changed");
+ result = 1;
+ }
+
+ /* Set the flags to something else. */
+ if (fcntl (fd, F_SETFL, O_APPEND) == -1)
+ {
+ printf ("fcntl(fd, F_SETFL, O_APPEND) failed: %m\n");
+ result = 1;
+ }
+
+ val = fcntl (fd, F_GETFL);
+ if (val == -1)
+ {
+ printf ("fcntl(fd, F_GETFL) after second F_SETFL failed: %m\n");
+ result = 1;
+ }
+ else if ((val & O_APPEND) == 0)
+ {
+ puts ("O_APPEND not set");
+ result = 1;
+ }
+
+ val = fcntl (fd, F_GETFD);
+ if (val == -1)
+ {
+ printf ("fcntl(fd, F_GETFD) failed: %m\n");
+ result = 1;
+ }
+ else if (fcntl (fd, F_SETFD, val | FD_CLOEXEC) == -1)
+ {
+ printf ("fcntl(fd, F_SETFD, FD_CLOEXEC) failed: %m\n");
+ result = 1;
+ }
+ else
+ {
+ val = fcntl (fd, F_GETFD);
+ if (val == -1)
+ {
+ printf ("fcntl(fd, F_GETFD) after F_SETFD failed: %m\n");
+ result = 1;
+ }
+ else if ((val & FD_CLOEXEC) == 0)
+ {
+ puts ("FD_CLOEXEC not set");
+ result = 1;
+ }
+ }
+
+ /* Get a number of a free descriptor. If /dev/null is not available
+ don't continue testing. */
+ fd2 = open (_PATH_DEVNULL, O_RDWR);
+ if (fd2 == -1)
+ return result;
+ close (fd2);
+
+ fd3 = fcntl (fd, F_DUPFD, fd2 + 1);
+ if (fd3 == -1)
+ {
+ printf ("fcntl(fd, F_DUPFD, %d) failed: %m\n", fd2 + 1);
+ result = 1;
+ }
+ else if (fd3 <= fd2)
+ {
+ printf ("F_DUPFD returned %d which is not larger than %d\n", fd3, fd2);
+ result = 1;
+ }
+
+ if (fd3 != -1)
+ {
+ val = fcntl (fd3, F_GETFD);
+ if (val == -1)
+ {
+ printf ("fcntl(fd3, F_GETFD) after F_DUPFD failed: %m\n");
+ result = 1;
+ }
+ else if ((val & FD_CLOEXEC) != 0)
+ {
+ puts ("FD_CLOEXEC still set");
+ result = 1;
+ }
+
+ close (fd3);
+ }
+
+ return result;
+}