diff options
Diffstat (limited to 'winsup/testsuite/winsup.api/ltp/pipe10.c')
| -rw-r--r-- | winsup/testsuite/winsup.api/ltp/pipe10.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/winsup/testsuite/winsup.api/ltp/pipe10.c b/winsup/testsuite/winsup.api/ltp/pipe10.c new file mode 100644 index 000000000..410622c37 --- /dev/null +++ b/winsup/testsuite/winsup.api/ltp/pipe10.c @@ -0,0 +1,168 @@ +/* + * + * 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 + * pipe10.c + * + * DESCRIPTION + * Check that parent can open a pipe and have a child read from it + * + * ALGORITHM + * Parent opens pipe, child reads. Passes if child can read all the + * characters written by the parent. + * + * USAGE: <for command-line> + * pipe10 [-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. + * + * HISTORY + * 07/2001 Ported by Wayne Boyer + * + * RESTRICTIONS + * None + */ +#include <errno.h> +#include <unistd.h> +#include <sys/wait.h> +#include <test.h> +#include <usctest.h> + +char *TCID = "pipe10"; +int TST_TOTAL = 1; +extern int Tst_count; + +void setup(void); +void cleanup(void); + +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 fd[2]; /* fds for pipe read/write */ + char wrbuf[BUFSIZ], rebuf[BUFSIZ]; + int red, written; /* no of chars read and */ + /* written to pipe */ + int length, greater, forkstat; + + /* 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*/ + } + + setup(); + + for (lc = 0; TEST_LOOPING(lc); lc++) { + + /* reset Tst_count in case we are looping */ + Tst_count = 0; + + TEST(pipe(fd)); + + if (TEST_RETURN == -1) { + tst_resm(TFAIL, "pipe creation failed"); + continue; + } + + if (!STD_FUNCTIONAL_TEST) { + tst_resm(TPASS, "call succeeded"); + continue; + } + + strcpy(wrbuf, "abcdefghijklmnopqrstuvwxyz\0"); + length = strlen(wrbuf); + + written = write(fd[1], wrbuf, length); + + /* did write write at least some chars */ + if ((written < 0) || (written > length)) { + tst_brkm(TBROK, cleanup, "write to pipe failed"); + } + + forkstat = fork(); + + if (forkstat == -1) { + tst_brkm(TBROK, cleanup, "fork() failed"); + /*NOTREACHED*/ + } + + if (forkstat == 0) { /* child */ + red = read(fd[0], rebuf, written); + + /* did read , get at least some chars */ + if ((red < 0) || (red > written)) { + tst_brkm(TBROK, cleanup, "read pipe failed"); + } + + greater = memcmp(rebuf, wrbuf, red); + + /* are the strings written and read equal */ + if (greater == 0) { + tst_resm(TPASS, "functionality is correct"); + } else { + tst_resm(TFAIL, "read & write strings do " + "not match"); + } + } else { /* parent */ + /* let the child carry on */ + exit(0); + } + } + cleanup(); + + /*NOTREACHED*/ +} + +/* + * setup() - performs all ONE TIME setup for this test. + */ +void +setup() +{ + /* capture signals */ + tst_sig(FORK, DEF_HANDLER, 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(); +} |