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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'.
81 lines
2.2 KiB
C
81 lines
2.2 KiB
C
/* Test opening a directory stream from a file descriptor.
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Copyright (C) 2009-2017 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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/* Written by Eric Blake <ebb9@byu.net>, 2009. */
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#include <config.h>
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#include <dirent.h>
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#include "signature.h"
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SIGNATURE_CHECK (fdopendir, DIR *, (int));
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#include <errno.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "macros.h"
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int
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main (int argc _GL_UNUSED, char *argv[])
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{
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DIR *d;
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int fd;
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/* A non-directory cannot be turned into a directory stream. */
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fd = open ("test-fdopendir.tmp", O_RDONLY | O_CREAT, 0600);
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ASSERT (0 <= fd);
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errno = 0;
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ASSERT (fdopendir (fd) == NULL);
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ASSERT (errno == ENOTDIR);
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ASSERT (close (fd) == 0);
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ASSERT (unlink ("test-fdopendir.tmp") == 0);
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/* A bad fd cannot be turned into a stream. */
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{
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errno = 0;
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ASSERT (fdopendir (-1) == NULL);
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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 (fdopendir (99) == NULL);
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ASSERT (errno == EBADF);
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}
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/* This should work. */
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fd = open (".", O_RDONLY);
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ASSERT (0 <= fd);
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d = fdopendir (fd);
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ASSERT (d);
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/* fdopendir should not close fd. */
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ASSERT (dup2 (fd, fd) == fd);
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/* Don't test dirfd here. dirfd (d) must return fd on current POSIX
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platforms, but on pre-2008 platforms or on non-POSIX platforms
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dirfd (fd) might return some other descriptor, or -1, and gnulib
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does not work around this porting problem. */
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ASSERT (closedir (d) == 0);
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/* Now we can guarantee that fd must be closed. */
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errno = 0;
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ASSERT (dup2 (fd, fd) == -1);
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ASSERT (errno == EBADF);
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return 0;
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}
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