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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:11:47 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:11:47 +0000
commit758f820bcc0f68aeebac1717e537ca13a320b909 (patch)
tree48111ece75cf4f98316848b37a7e26356e00669e /gnulib-tests/test-lseek.c
parentInitial commit. (diff)
downloadcoreutils-758f820bcc0f68aeebac1717e537ca13a320b909.tar.xz
coreutils-758f820bcc0f68aeebac1717e537ca13a320b909.zip
Adding upstream version 9.1.upstream/9.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gnulib-tests/test-lseek.c')
-rw-r--r--gnulib-tests/test-lseek.c109
1 files changed, 109 insertions, 0 deletions
diff --git a/gnulib-tests/test-lseek.c b/gnulib-tests/test-lseek.c
new file mode 100644
index 0000000..1bcb06f
--- /dev/null
+++ b/gnulib-tests/test-lseek.c
@@ -0,0 +1,109 @@
+/* Test of lseek() function.
+ Copyright (C) 2007-2022 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
+
+/* Written by Eric Blake, 2007. */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (lseek, off_t, (int, off_t, int));
+
+#include <errno.h>
+
+#include "macros.h"
+
+/* ARGC must be 2; *ARGV[1] is '0' if stdin and stdout are files, '1'
+ if they are pipes, and '2' if they are closed. Check for proper
+ semantics of lseek. */
+int
+main (int argc, char **argv)
+{
+ if (argc != 2)
+ return 2;
+ switch (*argv[1])
+ {
+ case '0': /* regular files */
+ ASSERT (lseek (0, (off_t)2, SEEK_SET) == 2);
+ ASSERT (lseek (0, (off_t)-4, SEEK_CUR) == -1);
+ ASSERT (errno == EINVAL);
+ errno = 0;
+#if ! defined __BEOS__
+ /* POSIX says that the last lseek call, when failing, does not change
+ the current offset. But BeOS sets it to 0. */
+ ASSERT (lseek (0, (off_t)0, SEEK_CUR) == 2);
+#endif
+#if 0 /* leads to SIGSYS on IRIX 6.5 */
+ ASSERT (lseek (0, (off_t)0, (SEEK_SET | SEEK_CUR | SEEK_END) + 1) == -1);
+ ASSERT (errno == EINVAL);
+#endif
+ ASSERT (lseek (1, (off_t)2, SEEK_SET) == 2);
+ errno = 0;
+ ASSERT (lseek (1, (off_t)-4, SEEK_CUR) == -1);
+ ASSERT (errno == EINVAL);
+ errno = 0;
+#if ! defined __BEOS__
+ /* POSIX says that the last lseek call, when failing, does not change
+ the current offset. But BeOS sets it to 0. */
+ ASSERT (lseek (1, (off_t)0, SEEK_CUR) == 2);
+#endif
+#if 0 /* leads to SIGSYS on IRIX 6.5 */
+ ASSERT (lseek (1, (off_t)0, (SEEK_SET | SEEK_CUR | SEEK_END) + 1) == -1);
+ ASSERT (errno == EINVAL);
+#endif
+ break;
+
+ case '1': /* pipes */
+ errno = 0;
+ ASSERT (lseek (0, (off_t)0, SEEK_CUR) == -1);
+ ASSERT (errno == ESPIPE);
+ errno = 0;
+ ASSERT (lseek (1, (off_t)0, SEEK_CUR) == -1);
+ ASSERT (errno == ESPIPE);
+ break;
+
+ case '2': /* closed */
+ /* Explicitly close file descriptors 0 and 1. The <&- and >&- in the
+ invoking shell are not enough on HP-UX. */
+ close (0);
+ close (1);
+
+ errno = 0;
+ ASSERT (lseek (0, (off_t)0, SEEK_CUR) == -1);
+ ASSERT (errno == EBADF);
+
+ errno = 0;
+ ASSERT (lseek (1, (off_t)0, SEEK_CUR) == -1);
+ ASSERT (errno == EBADF);
+
+ /* Test behaviour for invalid file descriptors. */
+ errno = 0;
+ ASSERT (lseek (-1, (off_t)0, SEEK_CUR) == -1);
+ ASSERT (errno == EBADF);
+
+ close (99);
+ errno = 0;
+ ASSERT (lseek (99, (off_t)0, SEEK_CUR) == -1);
+ ASSERT (errno == EBADF);
+
+ break;
+
+ default:
+ return 1;
+ }
+ return 0;
+}