mirror of git://sourceware.org/git/glibc.git
129 lines
3.5 KiB
C
129 lines
3.5 KiB
C
/* Basic tests for SYSV message queue functions.
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Copyright (C) 2016-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/ipc.h>
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#include <sys/msg.h>
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#include <support/support.h>
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#include <support/check.h>
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#include <support/temp_file.h>
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#define TEXTSIZE 32
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struct msgbuf_t
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{
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#ifdef _GNU_SOURCE
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__syscall_slong_t type;
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#else
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long type;
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#endif
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char buf[TEXTSIZE];
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};
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#define MSGTYPE 0x01020304
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#define MSGDATA "0123456789"
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/* These are for the temporary file we generate. */
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static char *name;
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static int msqid;
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static void
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remove_msq (void)
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{
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/* Enforce message queue removal in case of early test failure.
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Ignore error since the msgq may already have being removed. */
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msgctl (msqid, IPC_RMID, NULL);
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}
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static void
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do_prepare (int argc, char *argv[])
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{
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int fd = create_temp_file ("tst-sysvmsg.", &name);
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if (fd == -1)
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FAIL_EXIT1 ("cannot create temporary file (errno=%d)", errno);
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}
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#define PREPARE do_prepare
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/* It is not an extensive test, but rather a functional one aimed to check
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correct parameter passing on kernel. */
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#define MSGQ_MODE 0644
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static int
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do_test (void)
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{
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atexit (remove_msq);
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key_t key = ftok (name, 'G');
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if (key == -1)
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FAIL_EXIT1 ("ftok failed");
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msqid = msgget (key, MSGQ_MODE | IPC_CREAT);
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if (msqid == -1)
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{
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if (errno == ENOSYS)
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FAIL_UNSUPPORTED ("msgget not supported");
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FAIL_EXIT1 ("msgget failed (errno=%d)", errno);
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}
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/* Get message queue kernel information and do some sanity checks. */
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struct msqid_ds msginfo;
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if (msgctl (msqid, IPC_STAT, &msginfo) == -1)
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FAIL_EXIT1 ("msgctl with IPC_STAT failed (errno=%d)", errno);
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if (msginfo.msg_perm.__key != key)
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FAIL_EXIT1 ("msgid_ds::msg_perm::key (%d) != %d",
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(int) msginfo.msg_perm.__key, (int) key);
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if (msginfo.msg_perm.mode != MSGQ_MODE)
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FAIL_EXIT1 ("msgid_ds::msg_perm::mode (%o) != %o",
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msginfo.msg_perm.mode, MSGQ_MODE);
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if (msginfo.msg_qnum != 0)
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FAIL_EXIT1 ("msgid_ds::msg_qnum (%lu) != 0",
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(long unsigned) msginfo.msg_qnum);
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/* Check if last argument (IPC_NOWAIT) is correctly handled. */
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struct msgbuf_t msg2rcv = { 0 };
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if (msgrcv (msqid, &msg2rcv, sizeof (msg2rcv.buf), MSGTYPE,
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IPC_NOWAIT) == -1
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&& errno != ENOMSG)
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FAIL_EXIT1 ("msgrcv failed (errno=%d)", errno);
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struct msgbuf_t msg2snd = { MSGTYPE, MSGDATA };
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if (msgsnd (msqid, &msg2snd, sizeof (msg2snd.buf), 0) == -1)
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FAIL_EXIT1 ("msgsnd failed (errno=%d)", errno);
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if (msgrcv (msqid, &msg2rcv, sizeof (msg2rcv.buf), MSGTYPE, 0) == -1)
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FAIL_EXIT1 ("msgrcv failed (errno=%d)", errno);
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int ret = 0;
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if (strncmp (msg2snd.buf, msg2rcv.buf, TEXTSIZE) != 0)
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ret = 1;
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if (msgctl (msqid, IPC_RMID, NULL) == -1)
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FAIL_EXIT1 ("msgctl failed");
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return ret;
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}
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#include <support/test-driver.c>
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