| /* |
| * |
| * Copyright (c) International Business Machines Corp., 2001 |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program 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 General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| /* |
| * NAME |
| * msgrcv06.c |
| * |
| * DESCRIPTION |
| * msgrcv06 - test for EIDRM error |
| * |
| * ALGORITHM |
| * loop if that option was specified |
| * create a message queue with read/write permissions |
| * fork a child who sleeps on an attempted read with msgrcv() |
| * parent removes the queue then waits for child to complete |
| * check the errno value |
| * issue a PASS message if we get EIDRM |
| * otherwise, the tests fails |
| * issue a FAIL message |
| * child removes message queue if required |
| * parent callc cleanup |
| * |
| * USAGE: <for command-line> |
| * msgrcv06 [-c n] [-e] [-i n] [-I x] [-P x] [-t] |
| * where, -c n : Run n copies concurrently. |
| * -e : Turn on errno logging. |
| * -i n : Execute test n times. |
| * -I x : Execute test for x seconds. |
| * -P x : Pause for x seconds between iterations. |
| * -t : Turn on syscall timing. |
| * |
| * HISTORY |
| * 03/2001 - Written by Wayne Boyer |
| * 14/03/2008 Matthieu Fertré (Matthieu.Fertre@irisa.fr) |
| * - Fix concurrency issue. Due to the use of usleep function to |
| * synchronize processes, synchronization issues can occur on a loaded |
| * system. Fix this by using pipes to synchronize processes. |
| * |
| * |
| * RESTRICTIONS |
| * none |
| */ |
| |
| #include "test.h" |
| #include "usctest.h" |
| |
| #include "ipcmsg.h" |
| #include "libtestsuite.h" |
| |
| #include <sys/types.h> |
| #include <sys/wait.h> |
| |
| void do_child(void); |
| void cleanup(void); |
| void setup(void); |
| void sighandler(int); |
| #ifdef UCLINUX |
| #define PIPE_NAME "msgrcv06" |
| void do_child_uclinux(void); |
| #endif |
| |
| char *TCID = "msgrcv06"; |
| int TST_TOTAL = 1; |
| extern int Tst_count; |
| |
| int exp_enos[] = { EIDRM, 0 }; /* 0 terminated list of expected errnos */ |
| |
| int msg_q_1 = -1; /* The message queue id created in setup */ |
| |
| int sync_pipes[2]; |
| |
| MSGBUF rcv_buf; |
| pid_t c_pid; |
| |
| int main(int ac, char **av) |
| { |
| int lc; /* loop counter */ |
| char *msg; /* message returned from parse_opts */ |
| |
| /* parse standard options */ |
| if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) { |
| tst_brkm(TBROK, cleanup, "OPTION PARSING ERROR - %s", msg); |
| } |
| #ifdef UCLINUX |
| maybe_run_child(&do_child_uclinux, "d", &msg_q_1); |
| #endif |
| |
| setup(); /* global setup */ |
| |
| if (sync_pipe_create(sync_pipes, PIPE_NAME) == -1) |
| tst_brkm(TBROK, cleanup, "sync_pipe_create failed"); |
| |
| /* The following loop checks looping state if -i option given */ |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| /* reset Tst_count in case we are looping */ |
| Tst_count = 0; |
| |
| /* |
| * set up the queue here so that multiple test iterations |
| * will work. |
| */ |
| msgkey = getipckey(); |
| |
| /* create a message queue with read/write permission */ |
| if ((msg_q_1 = msgget(msgkey, IPC_CREAT | IPC_EXCL | MSG_RW)) |
| == -1) { |
| tst_brkm(TBROK, cleanup, "Can't create message queue"); |
| } |
| |
| /* |
| * fork a child that will attempt to read a non-existent |
| * message from the queue |
| */ |
| if ((c_pid = FORK_OR_VFORK()) == -1) { |
| tst_brkm(TBROK, cleanup, "could not fork"); |
| } |
| |
| if (c_pid == 0) { /* child */ |
| /* |
| * Attempt to read a message without IPC_NOWAIT. |
| * With no message to read, the child sleeps. |
| */ |
| |
| #ifdef UCLINUX |
| if (self_exec(av[0], "d", msg_q_1) < 0) { |
| tst_brkm(TBROK, cleanup, "could not self_exec"); |
| } |
| #else |
| do_child(); |
| #endif |
| } else { /* parent */ |
| |
| if (sync_pipe_wait(sync_pipes) == -1) |
| tst_brkm(TBROK, cleanup, |
| "sync_pipe_wait failed"); |
| |
| if (sync_pipe_close(sync_pipes, PIPE_NAME) == -1) |
| tst_brkm(TBROK, cleanup, |
| "sync_pipe_close failed"); |
| |
| sleep(1); |
| |
| /* remove the queue */ |
| rm_queue(msg_q_1); |
| |
| waitpid(c_pid, NULL, 0); |
| } |
| } |
| |
| /*NOTREACHED*/ return 0; |
| } |
| |
| /* |
| * do_child() |
| */ |
| void do_child() |
| { |
| if (sync_pipe_notify(sync_pipes) == -1) |
| tst_brkm(TBROK, cleanup, "sync_pipe_notify failed"); |
| |
| if (sync_pipe_close(sync_pipes, PIPE_NAME) == -1) |
| tst_brkm(TBROK, cleanup, "sync_pipe_close failed"); |
| |
| TEST(msgrcv(msg_q_1, &rcv_buf, MSGSIZE, 1, 0)); |
| |
| if (TEST_RETURN != -1) { |
| tst_resm(TFAIL, "call succeeded when error expected"); |
| exit(-1); |
| } |
| |
| TEST_ERROR_LOG(TEST_ERRNO); |
| |
| switch (TEST_ERRNO) { |
| case EIDRM: |
| tst_resm(TPASS, "expected failure - errno = %d : %s", |
| TEST_ERRNO, strerror(TEST_ERRNO)); |
| |
| /* mark the queue as invalid as it was removed */ |
| msg_q_1 = -1; |
| break; |
| default: |
| tst_resm(TFAIL, |
| "call failed with an unexpected error - %d : %s", |
| TEST_ERRNO, strerror(TEST_ERRNO)); |
| break; |
| } |
| |
| /* if it exists, remove the message queue that was created */ |
| rm_queue(msg_q_1); |
| |
| exit(0); |
| } |
| |
| #ifdef UCLINUX |
| /* |
| * do_child_uclinux() - capture signals again, then run do_child() |
| */ |
| void do_child_uclinux() |
| { |
| if (sync_pipe_create(sync_pipes, PIPE_NAME) == -1) |
| tst_brkm(TBROK, cleanup, "sync_pipe_create failed"); |
| |
| tst_sig(FORK, sighandler, cleanup); |
| |
| do_child(); |
| } |
| #endif |
| |
| /* |
| * sighandler() - handle signals |
| */ |
| void sighandler(int sig) |
| { |
| /* we don't need to do anything here */ |
| } |
| |
| /* |
| * setup() - performs all the ONE TIME setup for this test. |
| */ |
| void setup(void) |
| { |
| /* capture signals */ |
| tst_sig(FORK, sighandler, cleanup); |
| |
| /* Set up the expected error numbers for -e option */ |
| TEST_EXP_ENOS(exp_enos); |
| |
| /* Pause if that option was specified */ |
| TEST_PAUSE; |
| |
| /* |
| * Create a temporary directory and cd into it. |
| * This helps to ensure that a unique msgkey is created. |
| * See ../lib/libipc.c for more information. |
| */ |
| tst_tmpdir(); |
| } |
| |
| /* |
| * cleanup() - performs all the ONE TIME cleanup for this test at completion |
| * or premature exit. |
| */ |
| void cleanup(void) |
| { |
| /* Remove the temporary directory */ |
| tst_rmdir(); |
| |
| /* |
| * print timing stats if that option was specified. |
| * print errno log if that option was specified. |
| */ |
| TEST_CLEANUP; |
| |
| /* exit with return code appropriate for results */ |
| tst_exit(); |
| } |