diff options
Diffstat (limited to 'winsup/testsuite/winsup.api/ltp/read04.c')
| -rw-r--r-- | winsup/testsuite/winsup.api/ltp/read04.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/winsup/testsuite/winsup.api/ltp/read04.c b/winsup/testsuite/winsup.api/ltp/read04.c new file mode 100644 index 000000000..99dcdf68d --- /dev/null +++ b/winsup/testsuite/winsup.api/ltp/read04.c @@ -0,0 +1,175 @@ +/* + * + * 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 + * read01.c + * + * DESCRIPTION + * Testcase to check if read returns the number of bytes read correctly. + * + * ALGORITHM + * Create a file and write some bytes out to it. + * Attempt to read more than written. + * Check the return count, and the read buffer. The read buffer should be + * same as the write buffer. + * + * USAGE: <for command-line> + * read01 [-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 <stdio.h> +#include <fcntl.h> +#include <errno.h> +#include "test.h" +#include "usctest.h" + +void cleanup(void); +void setup(void); + +char *TCID = "read01"; +int TST_TOTAL = 1; +extern int Tst_count; + +#define TST_SIZE 26 /* could also do strlen(palfa) */ +char fname[255]; +char palfa[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" ; +int fild; + +main(int ac, char **av) +{ + int lc; /* loop counter */ + const char *msg; /* message returned from parse_opts */ + + int n; + int rfild; + char prbuf[BUFSIZ]; + + /* + * 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(); /* global setup for test */ + + /* check looping state if -i option given */ + for (lc = 0; TEST_LOOPING(lc); lc++) { + + Tst_count = 0; /* reset Tst_count while looping */ + + if ((rfild = open(fname, O_RDONLY)) == -1) { + tst_brkm(TBROK, cleanup, "can't open for reading"); + /*NOTREACHED*/ + } + TEST(read(rfild, prbuf, BUFSIZ)); + + if (TEST_RETURN == -1) { + tst_resm(TFAIL, "call failed unexpectedly"); + continue; + } + + if (STD_FUNCTIONAL_TEST) { + if (TEST_RETURN != TST_SIZE) { + tst_resm(TFAIL, "Bad read count - got %d - " + "expected %d", TEST_RETURN, TST_SIZE); + continue; + } + if (memcmp(palfa, prbuf, TST_SIZE) != 0) { + tst_resm(TFAIL, "read buffer not equal " + "to write buffer"); + continue; + } + tst_resm(TPASS, "functionality of read() is correct"); + } else { + tst_resm(TPASS, "call succeeded"); + } + if (close(rfild) == -1) { + tst_brkm(TBROK, cleanup, "close() failed"); + /*NOTREACHED*/ + } + } + cleanup(); + /*NOTREACHED*/ +} + +/* + * setup() - performs all ONE TIME setup for this test + */ +void +setup(void) +{ + /* capture signals */ + tst_sig(NOFORK, DEF_HANDLER, cleanup); + + umask(0); + + /* Pause if that option was specified */ + TEST_PAUSE; + + /* make a temp directory and cd to it */ + tst_tmpdir(); + + sprintf(fname,"tfile_%d",getpid()); + + if ((fild = creat(fname, 0777)) == -1) { + tst_brkm(TBROK, cleanup, "creat(%s, 0777) Failed, errno = %d" + " : %s", fname, errno, strerror(errno)); + /*NOTREACHED*/ + } + if (write(fild, palfa, TST_SIZE) != TST_SIZE) { + tst_brkm(TBROK, cleanup, "can't write to Xread"); + /*NOTREACHED*/ + } + close (fild); +} + +/* + * cleanup() - performs all ONE TIME cleanup for this test at completion or + * premature exit. + */ +void +cleanup(void) +{ + /* + * print timing stats if that option was specified. + * print errno log if that option was specified. + */ + TEST_CLEANUP; + + /* Remove tmp dir and all files in it */ + unlink(fname); + tst_rmdir(); + + /* exit with return code appropriate for results */ + tst_exit(); +} |