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be9b0b9a01
It avoids regressions on possible future commands that might require additional libc support. The downside is new commands added by newer kernels will need further glibc support. Checked on x86_64-linux-gnu and i686-linux-gnu (Linux v4.15 and v5.4).
134 lines
3.7 KiB
C
134 lines
3.7 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 <test-sysvipc.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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TEST_COMPARE (msgctl (msqid, first_msg_invalid_cmd (), NULL), -1);
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TEST_COMPARE (errno, EINVAL);
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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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