| /* |
| * |
| * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /* |
| * NAME |
| * creat01.c |
| * |
| * DESCRIPTION |
| * Testcase to check the basic functionality of the creat(2) system call. |
| * |
| * ALGORITHM |
| * 1. creat() a file using 0444 mode, write to the fildes, write |
| * should return a positive count. |
| * |
| * 2. creat() should truncate a file to 0 bytes if it already |
| * exists, and should not fail. |
| * |
| * USAGE: <for command-line> |
| * creat01 [-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 |
| */ |
| |
| #ifndef _GNU_SOURCE |
| #define _GNU_SOURCE |
| #endif |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <pwd.h> |
| #include <stdio.h> |
| #include "test.h" |
| |
| void setup(void); |
| void cleanup(void); |
| void functest1(void); |
| void functest2(void); |
| |
| char *TCID = "creat01"; |
| int TST_TOTAL = 2; |
| char nobody_uid[] = "nobody"; |
| struct passwd *ltpuser; |
| |
| char filename[40]; |
| int fd; |
| |
| #define MODE1 0644 |
| #define MODE2 0444 |
| |
| struct test_case_t { |
| char *fname; |
| int mode; |
| void (*functest) (); |
| } TC[] = { |
| { |
| filename, MODE1, functest1}, { |
| filename, MODE2, functest2} |
| }; |
| |
| int main(int ac, char **av) |
| { |
| int i; |
| int lc; |
| const char *msg; |
| |
| if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| |
| tst_count = 0; |
| |
| for (i = 0; i < TST_TOTAL; i++) { |
| TEST(fd = creat(filename, TC[i].mode)); |
| |
| if (TEST_RETURN == -1) { |
| tst_resm(TFAIL | TTERRNO, "creat failed"); |
| continue; |
| } |
| |
| (*TC[i].functest) (); |
| close(fd); |
| } |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| void functest1(void) |
| { |
| if (write(TEST_RETURN, "A", 1) != 1) |
| tst_resm(TFAIL, "write was unsuccessful"); |
| else |
| tst_resm(TPASS, "file was created and written to successfully"); |
| } |
| |
| void functest2(void) |
| { |
| struct stat buf; |
| |
| if (stat(filename, &buf) == -1) |
| tst_brkm(TBROK | TERRNO, cleanup, "stat failed"); |
| if (buf.st_size == 0) |
| tst_resm(TPASS, "creat truncated existing file to 0 bytes"); |
| else |
| tst_resm(TFAIL, "creat FAILED to truncate file to 0 bytes"); |
| } |
| |
| void setup(void) |
| { |
| fd = -1; |
| |
| tst_require_root(NULL); |
| |
| ltpuser = getpwnam(nobody_uid); |
| if (ltpuser == NULL) |
| tst_brkm(TBROK | TERRNO, NULL, "getpwnam failed"); |
| if (setuid(ltpuser->pw_uid) == -1) |
| tst_brkm(TBROK | TERRNO, NULL, "setuid failed"); |
| |
| tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| |
| umask(0); |
| |
| TEST_PAUSE; |
| |
| tst_tmpdir(); |
| |
| sprintf(filename, "creat01.%d", getpid()); |
| } |
| |
| void cleanup(void) |
| { |
| if (fd != -1) |
| close(fd); |
| |
| unlink(filename); |
| |
| tst_rmdir(); |
| } |