mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-25 14:30:06 +00:00
581c785bf3
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
137 lines
3.9 KiB
C
137 lines
3.9 KiB
C
/* Basic tests for SYSV shared memory functions.
|
|
Copyright (C) 2016-2022 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <sys/types.h>
|
|
#include <sys/ipc.h>
|
|
#include <sys/shm.h>
|
|
|
|
#include <test-sysvipc.h>
|
|
|
|
#include <support/support.h>
|
|
#include <support/check.h>
|
|
#include <support/temp_file.h>
|
|
|
|
/* These are for the temporary file we generate. */
|
|
static char *name;
|
|
static int shmid;
|
|
|
|
static void
|
|
remove_shm (void)
|
|
{
|
|
/* Enforce message queue removal in case of early test failure.
|
|
Ignore error since the shm may already have being removed. */
|
|
shmctl (shmid, IPC_RMID, 0);
|
|
}
|
|
|
|
static void
|
|
do_prepare (int argc, char *argv[])
|
|
{
|
|
int fd = create_temp_file ("tst-sysvshm.", &name);
|
|
if (fd == -1)
|
|
FAIL_EXIT1 ("cannot create temporary file (errno=%d)", errno);
|
|
}
|
|
|
|
#define PREPARE do_prepare
|
|
|
|
/* It is not an extensive test, but rather a functional one aimed to check
|
|
correct parameter passing on kernel. */
|
|
|
|
#define CHECK_EQ(v, k) \
|
|
if ((v) != (k)) \
|
|
FAIL_EXIT1("%d != %d", v, k)
|
|
|
|
#define SHM_MODE 0666
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
atexit (remove_shm);
|
|
|
|
key_t key = ftok (name, 'G');
|
|
if (key == -1)
|
|
FAIL_EXIT1 ("ftok failed");
|
|
|
|
long int pgsz = sysconf (_SC_PAGESIZE);
|
|
if (pgsz == -1)
|
|
FAIL_EXIT1 ("sysconf (_SC_PAGESIZE) failed (errno = %d)", errno);
|
|
|
|
shmid = shmget(key, pgsz, IPC_CREAT | IPC_EXCL | SHM_MODE);
|
|
if (shmid == -1)
|
|
{
|
|
if (errno == ENOSYS)
|
|
FAIL_UNSUPPORTED ("shmget not supported");
|
|
FAIL_EXIT1 ("shmget failed (errno=%d)", errno);
|
|
}
|
|
|
|
TEST_COMPARE (shmctl (shmid, first_shm_invalid_cmd (), NULL), -1);
|
|
TEST_COMPARE (errno, EINVAL);
|
|
|
|
/* Get shared memory kernel information and do some sanity checks. */
|
|
struct shmid_ds shminfo;
|
|
if (shmctl (shmid, IPC_STAT, &shminfo) == -1)
|
|
FAIL_EXIT1 ("shmctl with IPC_STAT failed (errno=%d)", errno);
|
|
|
|
if (shminfo.shm_perm.__key != key)
|
|
FAIL_EXIT1 ("shmid_ds::shm_perm::key (%d) != %d",
|
|
(int) shminfo.shm_perm.__key, (int) key);
|
|
if (shminfo.shm_perm.mode != SHM_MODE)
|
|
FAIL_EXIT1 ("shmid_ds::shm_perm::mode (%o) != %o",
|
|
shminfo.shm_perm.mode, SHM_MODE);
|
|
if (shminfo.shm_segsz != pgsz)
|
|
FAIL_EXIT1 ("shmid_ds::shm_segsz (%lu) != %lu",
|
|
(long unsigned) shminfo.shm_segsz, pgsz);
|
|
|
|
/* Attach on shared memory and realize some operations. */
|
|
int *shmem = shmat (shmid, NULL, 0);
|
|
if (shmem == (void*) -1)
|
|
FAIL_EXIT1 ("shmem failed (errno=%d)", errno);
|
|
|
|
shmem[0] = 0x55555555;
|
|
shmem[32] = 0x44444444;
|
|
shmem[64] = 0x33333333;
|
|
shmem[128] = 0x22222222;
|
|
|
|
if (shmdt (shmem) == -1)
|
|
FAIL_EXIT1 ("shmem failed (errno=%d)", errno);
|
|
|
|
shmem = shmat (shmid, NULL, SHM_RDONLY);
|
|
if (shmem == (void*) -1)
|
|
FAIL_EXIT1 ("shmem failed (errno=%d)", errno);
|
|
|
|
CHECK_EQ (shmem[0], 0x55555555);
|
|
CHECK_EQ (shmem[32], 0x44444444);
|
|
CHECK_EQ (shmem[64], 0x33333333);
|
|
CHECK_EQ (shmem[128], 0x22222222);
|
|
|
|
if (shmdt (shmem) == -1)
|
|
FAIL_EXIT1 ("shmem failed (errno=%d)", errno);
|
|
|
|
/* Finally free up the semnaphore resource. */
|
|
if (shmctl (shmid, IPC_RMID, 0) == -1)
|
|
FAIL_EXIT1 ("semctl failed (errno=%d)", errno);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|