@@ -30,7 +30,7 @@ routines := ftok \
semop semget semctl semtimedop \
shmat shmdt shmget shmctl
-tests := test-sysvmsg test-sysvsem
+tests := test-sysvmsg test-sysvsem test-sysvshm
include ../Rules
new file mode 100644
@@ -0,0 +1,130 @@
+/* Basic tests for SYSV shared memory functions.
+ Copyright (C) 2016 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
+ <http://www.gnu.org/licenses/>. */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+
+static void do_prepare (void);
+#define PREPARE(argc, argv) do_prepare ()
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+
+/* This defines the `main' function and some more. */
+#include <test-skeleton.c>
+
+/* 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 o early test failure.
+ Ignore error since the msgq maybe already being removed. */
+ shmctl (shmid, IPC_RMID, 0);
+}
+
+static void
+do_prepare (void)
+{
+ int fd = create_temp_file ("tst-sysvshm.", &name);
+ if (fd == -1)
+ FAIL_EXIT1 ("cannot create temporary file (errno=%d)", errno);
+}
+
+#define CHECK_EQ(v, k) \
+ if ((v) != (k)) \
+ FAIL_EXIT1("%d != %d", v, k)
+
+/* It is not an extensive test, but rather a functional one aimed to check
+ correct parameter passing on kernel. */
+
+#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 ("msgget not supported");
+ FAIL_EXIT1 ("msgget failed (errno=%d)", errno);
+ }
+
+ /* Get shared memory kernel information and do some sanitiy 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 ("msgid_ds::msg_perm::key (%d) != %d",
+ (int) shminfo.shm_perm.__key, (int) key);
+ if (shminfo.shm_perm.mode != SHM_MODE)
+ FAIL_EXIT1 ("msgid_ds::shm_perm::mode (%o) != %o",
+ shminfo.shm_perm.mode, SHM_MODE);
+ if (shminfo.shm_segsz != pgsz)
+ FAIL_EXIT1 ("msgid_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;
+}