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Diffstat (limited to 'stdio-common/tst-freopen5.c')
| -rw-r--r-- | stdio-common/tst-freopen5.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/stdio-common/tst-freopen5.c b/stdio-common/tst-freopen5.c new file mode 100644 index 0000000000..f32626bccf --- /dev/null +++ b/stdio-common/tst-freopen5.c @@ -0,0 +1,144 @@ +/* Test freopen and freopen64 with large offsets. + Copyright (C) 2024 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <mcheck.h> +#include <stdio.h> +#include <stdlib.h> + +#include <support/check.h> +#include <support/descriptors.h> +#include <support/support.h> +#include <support/temp_file.h> +#include <support/test-driver.h> +#include <support/xstdio.h> + +#define START_TEST(DESC) \ + do \ + { \ + fds = support_descriptors_list (); \ + verbose_printf (DESC); \ + } \ + while (0) + +#define END_TEST \ + do \ + { \ + support_descriptors_check (fds); \ + support_descriptors_free (fds); \ + } \ + while (0) + +int +do_test (void) +{ + mtrace (); + struct support_descriptors *fds; + FILE *fp; + int ret; + + char *temp_dir = support_create_temp_directory ("tst-freopen5"); + /* This file is removed at the end of each test rather than left + around between tests to avoid problems with subsequent tests + reopening it as a large (2GB + 1 byte) file. */ + char *file1 = xasprintf ("%s/file1", temp_dir); + + /* fopen with freopen64: large offsets OK. */ + START_TEST ("testing fopen with freopen64\n"); + fp = fopen ("/dev/null", "r"); + TEST_VERIFY_EXIT (fp != NULL); + fp = freopen64 (file1, "w", fp); + TEST_VERIFY_EXIT (fp != NULL); + setbuf (fp, NULL); + ret = fseeko64 (fp, 1LL << 32, SEEK_SET); + TEST_COMPARE (ret, 0); + ret = fputc ('x', fp); + TEST_COMPARE (ret, 'x'); + xfclose (fp); + ret = remove (file1); + TEST_COMPARE (ret, 0); + END_TEST; + + /* fopen64 with freopen64: large offsets OK. */ + START_TEST ("testing fopen64 with freopen64\n"); + fp = fopen64 ("/dev/null", "r"); + TEST_VERIFY_EXIT (fp != NULL); + fp = freopen64 (file1, "w", fp); + TEST_VERIFY_EXIT (fp != NULL); + setbuf (fp, NULL); + ret = fseeko64 (fp, 1LL << 32, SEEK_SET); + TEST_COMPARE (ret, 0); + ret = fputc ('x', fp); + TEST_COMPARE (ret, 'x'); + xfclose (fp); + ret = remove (file1); + TEST_COMPARE (ret, 0); + END_TEST; + + /* fopen with freopen: large offsets not OK on 32-bit systems. */ + START_TEST ("testing fopen with freopen\n"); + fp = fopen ("/dev/null", "r"); + TEST_VERIFY_EXIT (fp != NULL); + fp = freopen (file1, "w", fp); + TEST_VERIFY_EXIT (fp != NULL); + setbuf (fp, NULL); + ret = fseeko64 (fp, 1LL << 32, SEEK_SET); + TEST_COMPARE (ret, 0); + errno = 0; + ret = fputc ('x', fp); + if (sizeof (off_t) == 4) + { + TEST_COMPARE (ret, EOF); + TEST_COMPARE (errno, EFBIG); + } + else + TEST_COMPARE (ret, 'x'); + fclose (fp); + ret = remove (file1); + TEST_COMPARE (ret, 0); + END_TEST; + + /* fopen64 with freopen: large offsets not OK on 32-bit systems. */ + START_TEST ("testing fopen64 with freopen\n"); + fp = fopen64 ("/dev/null", "r"); + TEST_VERIFY_EXIT (fp != NULL); + fp = freopen (file1, "w", fp); + TEST_VERIFY_EXIT (fp != NULL); + setbuf (fp, NULL); + ret = fseeko64 (fp, 1LL << 32, SEEK_SET); + TEST_COMPARE (ret, 0); + errno = 0; + ret = fputc ('x', fp); + if (sizeof (off_t) == 4) + { + TEST_COMPARE (ret, EOF); + TEST_COMPARE (errno, EFBIG); + } + else + TEST_COMPARE (ret, 'x'); + fclose (fp); + ret = remove (file1); + TEST_COMPARE (ret, 0); + END_TEST; + + free (temp_dir); + free (file1); + return 0; +} + +#include <support/test-driver.c> |