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* build-aux/gendocs.sh (version): * doc/gendocs_template: * doc/gendocs_template_min: * doc/gnulib.texi: * lib/version-etc.c (COPYRIGHT_YEAR): Update copyright dates by hand in templates and the like. * all files: Run 'make update-copyright'.
61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
/* Test truncating a file.
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Copyright (C) 2011-2017 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <config.h>
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#include <unistd.h>
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#include "signature.h"
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SIGNATURE_CHECK (ftruncate, int, (int, off_t));
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#include <errno.h>
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#include <fcntl.h>
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#include "macros.h"
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int
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main (int argc, char *argv[])
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{
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const char *filename = argv[1];
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/* Test behaviour for invalid file descriptors. */
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{
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errno = 0;
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ASSERT (ftruncate (-1, 0) == -1);
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ASSERT (errno == EBADF);
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}
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{
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close (99);
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errno = 0;
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ASSERT (ftruncate (99, 0) == -1);
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ASSERT (errno == EBADF);
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}
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/* Test behaviour for read-only file descriptors. */
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{
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int fd = open (filename, O_RDONLY);
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ASSERT (fd >= 0);
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errno = 0;
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ASSERT (ftruncate (fd, 0) == -1);
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ASSERT (errno == EBADF || errno == EINVAL
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|| errno == EACCES /* seen on mingw */
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);
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close (fd);
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}
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return 0;
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}
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