blob: 9f4771166d96fa5f184f132c117972f41a8cbfbc [file] [log] [blame]
/*
* Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
* Copyright (c) 2015 Elvira Khabirova <lineprinter0@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <errno.h>
#include <sys/shm.h>
int
main(void)
{
int rc, id;
struct shmid_ds ds;
id = shmget(IPC_PRIVATE, 1, 0600);
if (id < 0)
return 77;
printf("shmget\\(IPC_PRIVATE, 1, 0600\\) += %d\n", id);
if (shmctl(id, IPC_STAT, &ds))
goto fail;
printf("shmctl\\(%d, (IPC_64\\|)?IPC_STAT, \\{shm_perm=\\{uid=%u, gid=%u, "
"mode=%#o, key=%u, cuid=%u, cgid=%u\\}, shm_segsz=%u, shm_cpid=%u, "
"shm_lpid=%u, shm_nattch=%u, shm_atime=%u, shm_dtime=%u, "
"shm_ctime=%u\\}\\) += 0\n",
id, (unsigned) ds.shm_perm.uid, (unsigned) ds.shm_perm.gid,
(unsigned) ds.shm_perm.mode, (unsigned) ds.shm_perm.__key,
(unsigned) ds.shm_perm.cuid, (unsigned) ds.shm_perm.cgid,
(unsigned) ds.shm_segsz, (unsigned) ds.shm_cpid,
(unsigned) ds.shm_lpid, (unsigned) ds.shm_nattch,
(unsigned) ds.shm_atime, (unsigned) ds.shm_dtime,
(unsigned) ds. shm_ctime);
int max = shmctl(0, SHM_INFO, &ds);
if (max < 0)
goto fail;
printf("shmctl\\(0, (IPC_64\\|)?SHM_INFO, %p\\) += %d\n", &ds, max);
rc = shmctl(id, SHM_STAT, &ds);
if (rc != id) {
/*
* In linux < v2.6.24-rc1 the first argument must be
* an index in the kernel's internal array.
*/
if (-1 != rc || EINVAL != errno)
goto fail;
printf("shmctl\\(%d, (IPC_64\\|)?SHM_STAT, %p\\) += -1 EINVAL \\(Invalid argument\\)\n", id, &ds);
} else {
printf("shmctl\\(%d, (IPC_64\\|)?SHM_STAT, %p\\) += %d\n", id, &ds, id);
}
rc = 0;
done:
if (shmctl(id, IPC_RMID, NULL) < 0)
return 1;
printf("shmctl\\(%d, (IPC_64\\|)?IPC_RMID, NULL\\) += 0\n", id);
return rc;
fail:
rc = 1;
goto done;
}