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Diffstat (limited to 'winsup/testsuite/winsup.api/ltp/pipe08.c')
-rw-r--r-- | winsup/testsuite/winsup.api/ltp/pipe08.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/winsup/testsuite/winsup.api/ltp/pipe08.c b/winsup/testsuite/winsup.api/ltp/pipe08.c new file mode 100644 index 000000000..9cc935d39 --- /dev/null +++ b/winsup/testsuite/winsup.api/ltp/pipe08.c @@ -0,0 +1,159 @@ +/* + * + * 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 + * pipe08.c + * + * DESCRIPTION + * Check that a SIGPIPE signal is generated when a write is + * attempted on an empty pipe. + * + * ALGORITHM + * 1. Write to a pipe after closing the read side. + * 2. Check for the signal SIGPIPE to be received. + * + * USAGE: <for command-line> + * pipe08 [-c n] [-f] [-i n] [-I x] [-P x] [-t] + * where, -c n : Run n copies concurrently. + * -f : Turn off functionality Testing. + * -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. + * + * USAGE + * pipe08 + * + * HISTORY + * 07/2001 Ported by Wayne Boyer + * + * RESTRICTIONS + * None + */ +#include <errno.h> +#include <unistd.h> +#include <signal.h> +#include "test.h" +#include "usctest.h" + +char *TCID = "pipe08"; +int TST_TOTAL = 1; +extern int Tst_count; + +void setup(void); +void cleanup(void); +void sighandler(int); + +main(int ac, char **av) +{ + int lc; /* loop counter */ + const char *msg; /* message returned from parse_opts */ + + int pipe_ret; /* exit status of pipe */ + int pipefd[2]; /* fds for pipe read/write */ + char wrbuf[BUFSIZ]; + int written, length; + int close_stat; /* exit status of close(read fd) */ + + /* parse standard options */ + if ((msg = parse_opts(ac, av, (option_t *)NULL, NULL)) != (char *)NULL){ + tst_brkm(TBROK, tst_exit, "OPTION PARSING ERROR - %s", msg); + /*NOTREACHED*/ + } + + if (!STD_FUNCTIONAL_TEST) { + tst_resm(TWARN, "-f option should not be used"); + } + + setup(); + + for (lc = 0; TEST_LOOPING(lc); lc++) { + + /* reset Tst_count in case we are looping */ + Tst_count = 0; + + TEST(pipe(pipefd)); + + if (TEST_RETURN != 0) { + tst_resm(TFAIL, "call failed unexpectedly"); + continue; + } + + if ((close_stat = close(pipefd[0])) == -1) { + tst_brkm(TBROK, cleanup, "close of read side failed"); + } + + strcpy(wrbuf, "abcdefghijklmnopqrstuvwxyz\0"); + length = strlen(wrbuf); + + /* + * the SIGPIPE signal will be caught here or else + * the program will dump core when the signal is + * sent + */ + written = write(pipefd[1], wrbuf, length); + } + cleanup(); + + /*NOTREACHED*/ +} + +/* + * sighandler - catch signals and look for SIGPIPE + */ +void +sighandler(int sig) +{ + if (sig != SIGPIPE) { + tst_resm(TFAIL, "expected SIGPIPE, got %d", sig); + } else { + tst_resm(TPASS, "got expected SIGPIPE signal"); + } +} + +/* + * setup() - performs all ONE TIME setup for this test. + */ +void +setup() +{ + /* capture signals */ + tst_sig(NOFORK, sighandler, cleanup); + + /* Pause if that option was specified */ + TEST_PAUSE; +} + +/* + * cleanup() - performs all ONE TIME cleanup for this test at + * completion or premature exit. + */ +void +cleanup() +{ + /* + * 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(); +} |