forked from rpms/glibc
274 lines
6.1 KiB
Diff
274 lines
6.1 KiB
Diff
commit 1d72fa3cfa046f7293421a7e58f2a272474ea901
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Author: Sergey Kolosov <skolosov@redhat.com>
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Date: Wed Sep 25 15:51:23 2024 +0200
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stdio-common: Add new test for fdopen
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This commit adds fdopen test with all modes.
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Reviewed-by: DJ Delorie <dj@redhat.com>
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diff --git a/stdio-common/Makefile b/stdio-common/Makefile
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index a6816f8bffbd21e0..8c94f0aea0049f56 100644
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--- a/stdio-common/Makefile
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+++ b/stdio-common/Makefile
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@@ -163,6 +163,7 @@ tests := \
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tst-bz11319-fortify2 \
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tst-cookie \
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tst-fdopen \
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+ tst-fdopen2 \
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tst-ferror \
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tst-fgets \
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tst-fgets2 \
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diff --git a/stdio-common/tst-fdopen2.c b/stdio-common/tst-fdopen2.c
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new file mode 100644
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index 0000000000000000..0c6625f25853aed5
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--- /dev/null
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+++ b/stdio-common/tst-fdopen2.c
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@@ -0,0 +1,246 @@
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+/* Test the fdopen function.
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+ Copyright (C) 2024 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, see
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+ <https://www.gnu.org/licenses/>. */
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+
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+#include <stdio.h>
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+#include <errno.h>
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+#include <fcntl.h>
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+#include <support/check.h>
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+#include <support/support.h>
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+#include <support/xunistd.h>
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+#include <support/temp_file.h>
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+
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+char *tmp_dir;
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+char *path_to_file;
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+
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+void
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+prepare_tmp_dir (void)
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+{
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+ tmp_dir = support_create_temp_directory ("tst-fdopen2");
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+ path_to_file = xasprintf ("%s/tst-fdopen2.txt", tmp_dir);
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+}
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+
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+/* open temp file descriptor with mode. */
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+int
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+open_tmp_fd (int mode)
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+{
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+ int fd = xopen (path_to_file, mode, 0644);
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+ return fd;
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+}
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+
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+
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+/* close and remove temp file with close. */
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+void
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+close_tmp_fd (int fd)
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+{
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+ xclose (fd);
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+ xunlink (path_to_file);
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+}
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+
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+/* close and remove temp file with fclose. */
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+void
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+close_tmp_fp (FILE *fp)
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+{
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+ fclose (fp);
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+ xunlink (path_to_file);
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+}
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+
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+/* test "w" fdopen mode. */
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+void
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+do_test_fdopen_w (void)
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+{
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+ int fd, ret;
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+ FILE *fp;
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+ fd = open_tmp_fd (O_WRONLY | O_CREAT | O_TRUNC);
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+
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+ /* test mode mismatch. */
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+ fp = fdopen (fd, "r");
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+ if (fp != NULL || errno != EINVAL)
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+ {
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+ close_tmp_fd (fd);
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+ FAIL_EXIT1 ("fdopen (%d, r) should fail with EINVAL: %m", fd);
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+ }
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+
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+ fp = fdopen (fd, "w");
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+ if (fp == NULL)
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+ {
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+ close_tmp_fd (fd);
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+ FAIL_EXIT1 ("fdopen (%d, w): %m", fd);
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+ }
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+
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+ const void *buf = "AAAA";
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+ ret = fwrite (buf, 1, 4, fp);
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+ if (ret != 4)
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+ {
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+ close_tmp_fp (fp);
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+ FAIL_EXIT1 ("fwrite (): %m");
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+ }
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+
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+ unsigned char buf2[4];
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+ rewind (fp);
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+ clearerr (fp);
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+ /* fread should fail in "w" mode */
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+ ret = fread (buf2, 1, 4, fp);
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+ if (ret != 0 || ferror (fp) == 0)
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+ {
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+ close_tmp_fp (fp);
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+ FAIL_EXIT1 ("fread should fail in \"w\" mode");
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+ }
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+
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+ fclose (fp);
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+}
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+
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+/* test "r" fdopen mode. */
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+void
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+do_test_fdopen_r (void)
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+{
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+ int fd, ret;
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+ FILE *fp;
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+ fd = open_tmp_fd (O_RDONLY);
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+
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+ /* test mode mismatch. */
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+ fp = fdopen (fd, "w");
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+ if (fp != NULL || errno != EINVAL)
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+ {
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+ close_tmp_fd (fd);
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+ FAIL_EXIT1 ("fdopen (%d, w) should fail with EINVAL: %m", fd);
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+ }
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+
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+ fp = fdopen (fd, "r");
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+ if (fp == NULL)
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+ {
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+ close_tmp_fd (fd);
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+ FAIL_EXIT1 ("fdopen (%d, w): %m", fd);
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+ }
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+
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+ const void *buf = "BBBB";
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+ /* fwrite should fail in "r" mode. */
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+ ret = fwrite (buf, 1, 4, fp);
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+ if (ret != 0 || ferror (fp) == 0)
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+ {
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+ close_tmp_fp (fp);
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+ FAIL_EXIT1 ("fwrite should fail in \"r\" mode");
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+ }
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+
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+ unsigned char buf2[4];
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+ ret = fread (buf2, 1, 4, fp);
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+ if (ret != 4)
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+ {
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+ close_tmp_fp (fp);
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+ FAIL_EXIT1 ("fread (): %m");
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+ }
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+
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+ fclose (fp);
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+}
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+
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+/* test "a" fdopen mode. */
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+void
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+do_test_fdopen_a (void)
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+{
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+ int fd, ret;
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+ FILE *fp;
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+ fd = open_tmp_fd (O_WRONLY | O_CREAT | O_APPEND);
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+
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+ /* test mode mismatch. */
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+ fp = fdopen (fd, "r+");
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+ if (fp != NULL || errno != EINVAL)
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+ {
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+ close_tmp_fd (fd);
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+ FAIL_EXIT1 ("fdopen (%d, \"r+\") should fail with EINVAL: %m", fd);
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+ }
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+
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+ fp = fdopen (fd, "a");
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+ if (fp == NULL)
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+ {
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+ close_tmp_fd (fd);
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+ FAIL_EXIT1 ("fdopen (%d, w): %m", fd);
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+ }
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+
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+ const void *buf = "CCCC";
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+ ret = fwrite (buf, 1, 4, fp);
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+ if (ret != 4)
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+ {
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+ close_tmp_fp (fp);
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+ FAIL_EXIT1 ("fwrite (): %m");
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+ }
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+
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+ /* fread should fail in "a" mode. */
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+ unsigned char buf2[4];
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+ clearerr (fp);
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+ ret = fread (buf2, 1, 4, fp);
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+ if (ret != 0 || ferror (fp) == 0)
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+ {
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+ close_tmp_fp (fp);
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+ FAIL_EXIT1 ("fread should fail \"a\" mode");
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+ }
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+
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+ fclose (fp);
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+}
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+
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+void
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+do_test_fdopen_mode (int mode, const char *fmode)
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+{
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+ int fd, ret;
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+ FILE *fp;
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+ fd = open_tmp_fd (mode);
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+
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+ fp = fdopen (fd, fmode);
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+ if (fp == NULL)
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+ {
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+ close_tmp_fd (fd);
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+ FAIL_EXIT1 ("fdopen (%d, %s): %m", fd, fmode);
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+ }
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+
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+ const void *buf = "EEEE";
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+ ret = fwrite (buf, 1, 4, fp);
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+ if (ret != 4)
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+ {
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+ close_tmp_fp (fp);
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+ FAIL_EXIT1 ("fwrite () in mode:%s returns %d: %m", fmode, ret);
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+ }
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+
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+ rewind (fp);
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+ unsigned char buf2[4];
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+ ret = fread (buf2, 1, 4, fp);
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+ if (ret != 4)
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+ {
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+ close_tmp_fp (fp);
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+ FAIL_EXIT1 ("fread () in mode:%s returns %d: %m", fmode, ret);
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+ }
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+
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+ fclose (fp);
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+}
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+
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+static int
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+do_test (void)
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+{
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+
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+ prepare_tmp_dir ();
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+
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+ do_test_fdopen_w ();
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+ do_test_fdopen_r ();
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+ do_test_fdopen_a ();
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+
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+ /* test r+ w+ a+ fdopen modes. */
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+ do_test_fdopen_mode (O_RDWR, "r+");
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+ do_test_fdopen_mode (O_RDWR | O_CREAT | O_TRUNC, "w+");
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+ do_test_fdopen_mode (O_RDWR | O_CREAT | O_APPEND, "a+");
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+ xunlink (path_to_file);
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+ return 0;
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+}
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+
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+#include <support/test-driver.c>
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