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/* Test posix_spawn_file_actions_addopen() function.
Copyright (C) 2011-2023 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 <https://www.gnu.org/licenses/>. */
#include <config.h>
#include <spawn.h>
#include "signature.h"
SIGNATURE_CHECK (posix_spawn_file_actions_addopen, int,
(posix_spawn_file_actions_t *, int,
const char *, int, mode_t));
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <unistd.h>
#include "macros.h"
/* Return a file descriptor that is too big to use.
Prefer the smallest such fd, except use OPEN_MAX if it is defined
and is greater than getdtablesize (), as that's how OS X works. */
static int
big_fd (void)
{
int fd = getdtablesize ();
#ifdef OPEN_MAX
if (fd < OPEN_MAX)
fd = OPEN_MAX;
#endif
return fd;
}
int
main (void)
{
posix_spawn_file_actions_t actions;
ASSERT (posix_spawn_file_actions_init (&actions) == 0);
/* Test behaviour for invalid file descriptors. */
{
errno = 0;
ASSERT (posix_spawn_file_actions_addopen (&actions, -1,
"foo", 0, O_RDONLY)
== EBADF);
}
{
int bad_fd = big_fd ();
errno = 0;
ASSERT (posix_spawn_file_actions_addopen (&actions, bad_fd,
"foo", 0, O_RDONLY)
== EBADF);
}
posix_spawn_file_actions_destroy (&actions);
return 0;
}
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