| /* |
| * |
| * 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 |
| * creat04.c |
| * |
| * DESCRIPTION |
| * testcase to check creat(2) fails with EACCES |
| * |
| * ALGORITHM |
| * 1. A parent spawns a child, which creates a test-directory, and |
| * makes it 700. Then the parent spawns another child, does a |
| * setreuid to ltpuser1, and attempts to creat() a file (which |
| * does not exist) in the directory created by the first child. |
| * 2. Repeat 1, for a file (to be created by ltpuser1) which exists. |
| * That is the first child should creat() a file before exiting. |
| * |
| * USAGE: <for command-line> |
| * creat04 [-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 |
| * 07/2001 Ported by Wayne Boyer |
| * |
| * RESTRICTIONS |
| * Test must be run as root. |
| */ |
| |
| #include <stdio.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <pwd.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <sys/wait.h> |
| #include "test.h" |
| #include "usctest.h" |
| |
| char *TCID = "creat04"; |
| int TST_TOTAL = 2; |
| |
| void setup(void); |
| void cleanup(void); |
| |
| #define FMODE 0444 |
| #define DMODE 00700 |
| |
| int exp_enos[] = { EACCES, 0 }; |
| |
| char user1name[] = "nobody"; |
| char good_dir[40] = "testdir"; |
| char fname[40], fname1[40]; |
| extern struct passwd *my_getpwnam(char *); |
| struct passwd *ltpuser1; |
| |
| struct test_case_t { |
| char *fname; |
| } TC[] = { |
| { |
| fname}, { |
| fname1} |
| }; |
| |
| int main(int ac, char **av) |
| { |
| int lc; |
| int retval = 0; |
| char *msg; |
| |
| pid_t pid, pid1; |
| int i, status, fd; |
| |
| if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| setup(); |
| |
| TEST_EXP_ENOS(exp_enos); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| |
| /* reset Tst_count in case we are looping */ |
| Tst_count = 0; |
| |
| if ((pid = FORK_OR_VFORK()) == -1) { |
| tst_brkm(TBROK | TERRNO, cleanup, "fork() #1 failed"); |
| } |
| |
| if (pid == 0) { /* first child */ |
| if (mkdir(good_dir, DMODE) != 0) { |
| perror("mkdir() failed"); |
| exit(1); |
| } |
| if ((fd = open(fname1, O_RDWR | O_CREAT, 0444)) == -1) { |
| perror("open failed"); |
| exit(1); |
| } |
| exit(0); |
| } |
| wait(&status); |
| |
| /* make sure the child returned a good exit status */ |
| if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) { |
| tst_brkm(TBROK, cleanup, "child #1 failed"); |
| } |
| |
| if ((pid1 = FORK_OR_VFORK()) == -1) { |
| tst_brkm(TBROK | TERRNO, cleanup, "fork() #2 failed"); |
| } |
| |
| if (pid1 == 0) { /* second child */ |
| |
| ltpuser1 = my_getpwnam(user1name); |
| |
| if (ltpuser1 == NULL) { |
| perror("getpwnam"); |
| exit(1); |
| } |
| if (seteuid(ltpuser1->pw_uid) == -1) { |
| perror("seteuid"); |
| exit(1); |
| } |
| |
| /* loop through the test cases */ |
| for (i = 0; i < TST_TOTAL; i++) { |
| |
| TEST(creat(TC[i].fname, FMODE)); |
| |
| if (TEST_RETURN != -1) { |
| retval = 1; |
| tst_resm(TFAIL, "call succeeded " |
| "unexpectedly"); |
| continue; |
| } |
| |
| TEST_ERROR_LOG(TEST_ERRNO); |
| |
| if (TEST_ERRNO != EACCES) { |
| retval = 1; |
| tst_resm(TFAIL | TTERRNO, |
| "Expected EACCES"); |
| } else { |
| tst_resm(TPASS, "call failed with " |
| "EACCES as expected"); |
| } |
| } |
| |
| seteuid(0); |
| |
| /* clean up things in case we are looping */ |
| unlink(fname); |
| unlink(fname1); |
| rmdir(good_dir); |
| exit(retval); |
| |
| } else { /* parent */ |
| /* wait for the child to finish */ |
| wait(&status); |
| /* make sure the child returned a good exit status */ |
| if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) { |
| tst_resm(TFAIL, "see failures reported above"); |
| } |
| } |
| } |
| cleanup(); |
| |
| tst_exit(); |
| } |
| |
| /* |
| * setup() - performs all ONE TIME setup for this test. |
| */ |
| void setup() |
| { |
| tst_require_root(NULL); |
| |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| TEST_PAUSE; |
| |
| /* make a temporary directory and cd to it */ |
| tst_tmpdir(); |
| |
| sprintf(good_dir, "%s.%d", good_dir, getpid()); |
| sprintf(fname1, "%s/file1.%d", good_dir, getpid()); |
| sprintf(fname, "%s/file.%d", good_dir, getpid()); |
| } |
| |
| /* |
| * 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; |
| |
| /* delete the test directory created in setup() */ |
| tst_rmdir(); |
| |
| } |