Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 131 insertions, 0 deletions

diff --git a/REORG.TODO/sysvipc/test-sysvshm.c b/REORG.TODO/sysvipc/test-sysvshm.c
new file mode 100644
index 0000000000..b7ccd0e20e
--- /dev/null
+++ b/REORG.TODO/sysvipc/test-sysvshm.c
@@ -0,0 +1,131 @@
+/* Basic tests for SYSV shared memory functions.
+   Copyright (C) 2016-2017 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 <unistd.h>
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/shm.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);
+    }
+
+  /* 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>