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author | Igor Pashev <pashev.igor@gmail.com> | 2012-09-09 02:33:07 +0000 |
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committer | Igor Pashev <pashev.igor@gmail.com> | 2012-09-09 02:33:07 +0000 |
commit | 8e7ba70eba02f88d4f3ba12e07ab9c7bdf32240a (patch) | |
tree | 35373d0bc6f80a2f2ce1c49c91b3817f26b6c465 /gnulib-tests/test-fseeko4.c | |
download | coreutils-8e7ba70eba02f88d4f3ba12e07ab9c7bdf32240a.tar.gz |
Imported Upstream version 8.17upstream/8.17
Diffstat (limited to 'gnulib-tests/test-fseeko4.c')
-rw-r--r-- | gnulib-tests/test-fseeko4.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/gnulib-tests/test-fseeko4.c b/gnulib-tests/test-fseeko4.c new file mode 100644 index 00000000..3642d3cb --- /dev/null +++ b/gnulib-tests/test-fseeko4.c @@ -0,0 +1,71 @@ +/* Test of fseeko() function. + Copyright (C) 2011-2012 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 <http://www.gnu.org/licenses/>. */ + +#include <config.h> + +#include <stdio.h> + +#include <errno.h> +#include <unistd.h> + +#include "macros.h" + +int +main (int argc, char **argv) +{ + const char *filename = argv[1]; + + /* Test that fseeko() sets errno if someone else closes the stream + fd behind the back of stdio. */ + { + FILE *fp = fopen (filename, "r"); + ASSERT (fp != NULL); + setvbuf (fp, NULL, _IONBF, 0); + ASSERT (ftell (fp) == 0); + ASSERT (fseeko (fp, 0, SEEK_END) == 0); + ASSERT (ftell (fp) > 0); + ASSERT (close (fileno (fp)) == 0); + errno = 0; + ASSERT (fseeko (fp, 0, SEEK_SET) == -1); + ASSERT (errno == EBADF); + fclose (fp); + } + + /* Test that fseeko() sets errno if the stream was constructed with + an invalid file descriptor. */ + { + FILE *fp = fdopen (-1, "w"); + if (fp != NULL) + { + errno = 0; + ASSERT (fseeko (fp, 0, SEEK_END) == -1); + ASSERT (errno == EBADF); + fclose (fp); + } + } + { + FILE *fp = fdopen (99, "w"); + if (fp != NULL) + { + errno = 0; + ASSERT (fseeko (fp, 0, SEEK_END) == -1); + ASSERT (errno == EBADF); + fclose (fp); + } + } + + return 0; +} |