Merge branch 't/hurdsig-global-dispositions' into refs/top-bases/t/hurdsig-SA_SIGINFO

21 files changed, 407 insertions, 30 deletions

diff --git a/sysvipc/Makefile b/sysvipc/Makefile
index 5f3479e4c4..d05bf3e3ec 100644
--- a/sysvipc/Makefile
+++ b/sysvipc/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1995-2016 Free Software Foundation, Inc.
+# Copyright (C) 1995-2018 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
@@ -30,7 +30,9 @@ routines := ftok \
 	    semop semget semctl semtimedop \
 	    shmat shmdt shmget shmctl
 
+tests    := test-sysvmsg test-sysvsem test-sysvshm
+
 include ../Rules
 
-CFLAGS-msgrcv.c = -fexceptions -fasynchronous-unwind-tables
-CFLAGS-msgsnd.c = -fexceptions -fasynchronous-unwind-tables
+CFLAGS-msgrcv.c += -fexceptions -fasynchronous-unwind-tables
+CFLAGS-msgsnd.c += -fexceptions -fasynchronous-unwind-tables
diff --git a/sysvipc/ftok.c b/sysvipc/ftok.c
index ee3880400b..364f510912 100644
--- a/sysvipc/ftok.c
+++ b/sysvipc/ftok.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
+/* Copyright (C) 1995-2018 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
 
diff --git a/sysvipc/msgctl.c b/sysvipc/msgctl.c
index 99b0fcb4d9..29d112fb33 100644
--- a/sysvipc/msgctl.c
+++ b/sysvipc/msgctl.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
+/* Copyright (C) 1995-2018 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
 
diff --git a/sysvipc/msgget.c b/sysvipc/msgget.c
index 7772e4ab95..d193f433be 100644
--- a/sysvipc/msgget.c
+++ b/sysvipc/msgget.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
+/* Copyright (C) 1995-2018 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
 
diff --git a/sysvipc/msgrcv.c b/sysvipc/msgrcv.c
index 2055e3ce10..f1ad93a39c 100644
--- a/sysvipc/msgrcv.c
+++ b/sysvipc/msgrcv.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
+/* Copyright (C) 1995-2018 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
 
diff --git a/sysvipc/msgsnd.c b/sysvipc/msgsnd.c
index d52d3cbb04..7af777221a 100644
--- a/sysvipc/msgsnd.c
+++ b/sysvipc/msgsnd.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
+/* Copyright (C) 1995-2018 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, August 1995.
 
diff --git a/sysvipc/semctl.c b/sysvipc/semctl.c
index 60409f5891..90fb8bf0a2 100644
--- a/sysvipc/semctl.c
+++ b/sysvipc/semctl.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
+/* Copyright (C) 1995-2018 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
 
diff --git a/sysvipc/semget.c b/sysvipc/semget.c
index f7a6e09580..6b1c991e59 100644
--- a/sysvipc/semget.c
+++ b/sysvipc/semget.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
+/* Copyright (C) 1995-2018 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
 
diff --git a/sysvipc/semop.c b/sysvipc/semop.c
index 923a44f085..3c6e23de61 100644
--- a/sysvipc/semop.c
+++ b/sysvipc/semop.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
+/* Copyright (C) 1995-2018 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, August 1995.
 
diff --git a/sysvipc/semtimedop.c b/sysvipc/semtimedop.c
index 61e011223c..4163c78791 100644
--- a/sysvipc/semtimedop.c
+++ b/sysvipc/semtimedop.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2003-2016 Free Software Foundation, Inc.
+/* Copyright (C) 2003-2018 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
 
diff --git a/sysvipc/shmat.c b/sysvipc/shmat.c
index d9fc4db566..c9d9ca784c 100644
--- a/sysvipc/shmat.c
+++ b/sysvipc/shmat.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
+/* Copyright (C) 1995-2018 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
 
diff --git a/sysvipc/shmctl.c b/sysvipc/shmctl.c
index 79e9cbe828..55381b8405 100644
--- a/sysvipc/shmctl.c
+++ b/sysvipc/shmctl.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
+/* Copyright (C) 1995-2018 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
 
diff --git a/sysvipc/shmdt.c b/sysvipc/shmdt.c
index c407be5072..e95b2502bd 100644
--- a/sysvipc/shmdt.c
+++ b/sysvipc/shmdt.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
+/* Copyright (C) 1995-2018 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
 
diff --git a/sysvipc/shmget.c b/sysvipc/shmget.c
index 27cdd29d4f..f3e9d68ec1 100644
--- a/sysvipc/shmget.c
+++ b/sysvipc/shmget.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
+/* Copyright (C) 1995-2018 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, August 1995.
 
diff --git a/sysvipc/sys/ipc.h b/sysvipc/sys/ipc.h
index 70bd7a6968..b8c6836e37 100644
--- a/sysvipc/sys/ipc.h
+++ b/sysvipc/sys/ipc.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
+/* Copyright (C) 1995-2018 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
@@ -20,10 +20,6 @@
 
 #include <features.h>
 
-#if !defined __USE_MISC && !defined __USE_XOPEN && __GNUC__ >= 2
-# warning "Files using this header must be compiled with _GNU_SOURCE or _XOPEN_SOURCE"
-#endif
-
 /* Get system dependent definition of `struct ipc_perm' and more.  */
 #include <bits/ipctypes.h>
 #include <bits/ipc.h>
diff --git a/sysvipc/sys/msg.h b/sysvipc/sys/msg.h
index 4dc559f49a..1635839617 100644
--- a/sysvipc/sys/msg.h
+++ b/sysvipc/sys/msg.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
+/* Copyright (C) 1995-2018 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
@@ -30,8 +30,7 @@
 #include <bits/msq.h>
 
 /* Define types required by the standard.  */
-#define	__need_time_t
-#include <time.h>
+#include <bits/types/time_t.h>
 
 #ifndef __pid_t_defined
 typedef __pid_t pid_t;
diff --git a/sysvipc/sys/sem.h b/sysvipc/sys/sem.h
index 1b32092922..200765bcba 100644
--- a/sysvipc/sys/sem.h
+++ b/sysvipc/sys/sem.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
+/* Copyright (C) 1995-2018 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
@@ -30,8 +30,7 @@
 #include <bits/sem.h>
 
 #ifdef __USE_GNU
-# define __need_timespec
-# include <time.h>
+# include <bits/types/struct_timespec.h>
 #endif
 
 /* The following System V style IPC functions implement a semaphore
diff --git a/sysvipc/sys/shm.h b/sysvipc/sys/shm.h
index df263dcba6..8936af7594 100644
--- a/sysvipc/sys/shm.h
+++ b/sysvipc/sys/shm.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
+/* Copyright (C) 1995-2018 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
@@ -30,8 +30,7 @@
 #include <bits/shm.h>
 
 /* Define types required by the standard.  */
-#define __need_time_t
-#include <time.h>
+#include <bits/types/time_t.h>
 
 #ifdef __USE_XOPEN
 # ifndef __pid_t_defined
diff --git a/sysvipc/test-sysvmsg.c b/sysvipc/test-sysvmsg.c
new file mode 100644
index 0000000000..1e0471807c
--- /dev/null
+++ b/sysvipc/test-sysvmsg.c
@@ -0,0 +1,128 @@
+/* Basic tests for SYSV message queue functions.
+   Copyright (C) 2016-2018 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/msg.h>
+
+#include <support/support.h>
+#include <support/check.h>
+#include <support/temp_file.h>
+
+#define TEXTSIZE 32
+struct msgbuf_t
+{
+#ifdef _GNU_SOURCE
+  __syscall_slong_t type;
+#else
+  long type;
+#endif
+  char buf[TEXTSIZE];
+};
+
+#define MSGTYPE 0x01020304
+#define MSGDATA "0123456789"
+
+/* These are for the temporary file we generate.  */
+static char *name;
+static int msqid;
+
+static void
+remove_msq (void)
+{
+  /* Enforce message queue removal in case of early test failure.
+     Ignore error since the msgq may already have being removed.  */
+  msgctl (msqid, IPC_RMID, NULL);
+}
+
+static void
+do_prepare (int argc, char *argv[])
+{
+  int fd = create_temp_file ("tst-sysvmsg.", &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 MSGQ_MODE 0644
+
+static int
+do_test (void)
+{
+  atexit (remove_msq);
+
+  key_t key = ftok (name, 'G');
+  if (key == -1)
+    FAIL_EXIT1 ("ftok failed");
+
+  msqid = msgget (key, MSGQ_MODE | IPC_CREAT);
+  if (msqid == -1)
+    {
+      if (errno == ENOSYS)
+	FAIL_UNSUPPORTED ("msgget not supported");
+      FAIL_EXIT1 ("msgget failed (errno=%d)", errno);
+    }
+
+  /* Get message queue kernel information and do some sanity checks.  */
+  struct msqid_ds msginfo;
+  if (msgctl (msqid, IPC_STAT, &msginfo) == -1)
+    FAIL_EXIT1 ("msgctl with IPC_STAT failed (errno=%d)", errno);
+
+  if (msginfo.msg_perm.__key != key)
+    FAIL_EXIT1 ("msgid_ds::msg_perm::key (%d) != %d",
+		(int) msginfo.msg_perm.__key, (int) key);
+  if (msginfo.msg_perm.mode != MSGQ_MODE)
+    FAIL_EXIT1 ("msgid_ds::msg_perm::mode (%o) != %o",
+		msginfo.msg_perm.mode, MSGQ_MODE);
+  if (msginfo.msg_qnum != 0)
+    FAIL_EXIT1 ("msgid_ds::msg_qnum (%lu) != 0",
+		(long unsigned) msginfo.msg_qnum);
+
+  /* Check if last argument (IPC_NOWAIT) is correctly handled.  */
+  struct msgbuf_t msg2rcv = { 0 };
+  if (msgrcv (msqid, &msg2rcv, sizeof (msg2rcv.buf), MSGTYPE,
+	      IPC_NOWAIT) == -1
+      && errno != ENOMSG)
+    FAIL_EXIT1 ("msgrcv failed (errno=%d)", errno);
+
+  struct msgbuf_t msg2snd = { MSGTYPE, MSGDATA };
+  if (msgsnd (msqid, &msg2snd, sizeof (msg2snd.buf), 0) == -1)
+    FAIL_EXIT1 ("msgsnd failed (errno=%d)", errno);
+
+  if (msgrcv (msqid, &msg2rcv, sizeof (msg2rcv.buf), MSGTYPE, 0) == -1)
+    FAIL_EXIT1 ("msgrcv failed (errno=%d)", errno);
+
+  int ret = 0;
+  if (strncmp (msg2snd.buf, msg2rcv.buf, TEXTSIZE) != 0)
+    ret = 1;
+
+  if (msgctl (msqid, IPC_RMID, NULL) == -1)
+    FAIL_EXIT1 ("msgctl failed");
+
+  return ret;
+}
+
+#include <support/test-driver.c>
diff --git a/sysvipc/test-sysvsem.c b/sysvipc/test-sysvsem.c
new file mode 100644
index 0000000000..a8e9bff000
--- /dev/null
+++ b/sysvipc/test-sysvsem.c
@@ -0,0 +1,123 @@
+/* Basic tests for SYSV semaphore functions.
+   Copyright (C) 2016-2018 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/sem.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 semid;
+
+static void
+remove_sem (void)
+{
+  /* Enforce message queue removal in case of early test failure.
+     Ignore error since the sem may already have being removed.  */
+  semctl (semid, 0, IPC_RMID, 0);
+}
+
+static void
+do_prepare (int argc, char *argv[])
+{
+  int fd = create_temp_file ("tst-sysvsem.", &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 SEM_MODE 0644
+
+union semun
+{
+  int val;
+  struct semid_ds *buf;
+  unsigned short  *array;
+};
+
+static int
+do_test (void)
+{
+  atexit (remove_sem);
+
+  key_t key = ftok (name, 'G');
+  if (key == -1)
+    FAIL_EXIT1 ("ftok failed");
+
+  semid = semget(key, 1, IPC_CREAT | IPC_EXCL | SEM_MODE);
+  if (semid == -1)
+    {
+      if (errno == ENOSYS)
+	FAIL_UNSUPPORTED ("msgget not supported");
+      FAIL_EXIT1 ("semget failed (errno=%d)", errno);
+    }
+
+  /* Get semaphore kernel information and do some sanity checks.  */
+  struct semid_ds seminfo;
+  if (semctl (semid, 0, IPC_STAT, (union semun) { .buf = &seminfo }) == -1)
+    FAIL_EXIT1 ("semctl with IPC_STAT failed (errno=%d)", errno);
+
+  if (seminfo.sem_perm.__key != key)
+    FAIL_EXIT1 ("semid_ds::sem_perm::key (%d) != %d",
+		(int) seminfo.sem_perm.__key, (int) key);
+  if (seminfo.sem_perm.mode != SEM_MODE)
+    FAIL_EXIT1 ("semid_ds::sem_perm::mode (%o) != %o",
+		seminfo.sem_perm.mode, SEM_MODE);
+  if (seminfo.sem_nsems != 1)
+    FAIL_EXIT1 ("semid_ds::sem_nsems (%lu) != 1",
+		(long unsigned) seminfo.sem_nsems);
+
+  /* Some lock/unlock basic tests.  */
+  struct sembuf sb1 = { 0, 1, 0 };
+  if (semop (semid, &sb1, 1) == -1)
+    FAIL_EXIT1 ("semop failed (errno=%i)", errno);
+
+  struct sembuf sb2 = { 0, -1, 0 };
+  if (semop (semid, &sb2, 1) == -1)
+    FAIL_EXIT1 ("semop failed (errno=%i)", errno);
+
+#ifdef _GNU_SOURCE
+  /* Set a time for half a second.  The semaphore operation should timeout
+     with EAGAIN.  */
+  struct timespec ts = { 0 /* sec */, 500000000 /* nsec */ };
+  if (semtimedop (semid, &sb2, 1, &ts) != -1
+      || (errno != EAGAIN && errno != ENOSYS))
+    FAIL_EXIT1 ("semtimedop succeed or returned errno != {EAGAIN,ENOSYS} "
+		"(errno=%i)", errno);
+#endif
+
+  /* Finally free up the semnaphore resource.  */
+  if (semctl (semid, 0, IPC_RMID, 0) == -1)
+    FAIL_EXIT1 ("semctl failed (errno=%d)", errno);
+
+  return 0;
+}
+
+#include <support/test-driver.c>
diff --git a/sysvipc/test-sysvshm.c b/sysvipc/test-sysvshm.c
new file mode 100644
index 0000000000..a7c2e0bd40
--- /dev/null
+++ b/sysvipc/test-sysvshm.c
@@ -0,0 +1,131 @@
+/* Basic tests for SYSV shared memory functions.
+   Copyright (C) 2016-2018 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>