| /* |
| * |
| * 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 |
| * chdir03 |
| * |
| * DESCRIPTION |
| * Testcase for testing that chdir(2) sets EACCES errno |
| * |
| * ALGORITHM |
| * 1. create a child process, sets its uid to ltpuser1 |
| * 2. this child creates a directory with perm 700, and exits |
| * 3. create another child process, sets its uid to ltpuser2 |
| * 4. this child attempts to chdir(2) to the directory created in 2. |
| * and expects to get an EACCES. |
| * |
| * USAGE: <for command-line> |
| * chdir03 [-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 |
| * This test must be run as root. |
| */ |
| |
| #include <stdio.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| #include <pwd.h> |
| #include <errno.h> |
| #include <sys/wait.h> |
| #include "test.h" |
| #include "usctest.h" |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| |
| char *TCID = "chdir03"; |
| int TST_TOTAL = 1; |
| |
| void setup(void); |
| void cleanup(void); |
| |
| char user1name[] = "nobody"; |
| char user2name[] = "bin"; |
| |
| int exp_enos[] = { EACCES, 0 }; |
| |
| char good_dir[100]; |
| |
| struct passwd *ltpuser1, *ltpuser2; |
| |
| extern struct passwd *my_getpwnam(char *); |
| |
| int main(int ac, char **av) |
| { |
| int lc; |
| const char *msg; |
| |
| pid_t pid, pid1; |
| int status; |
| |
| 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++) { |
| tst_count = 0; |
| |
| if ((pid = FORK_OR_VFORK()) < 0) { |
| tst_brkm(TBROK, cleanup, "first fork failed"); |
| } |
| |
| if (pid == 0) { |
| if (setreuid(ltpuser1->pw_uid, ltpuser1->pw_uid) != 0) { |
| perror("setreuid failed in child #1"); |
| exit(1); |
| } |
| if (mkdir(good_dir, 00700) != 0) { |
| perror("mkdir failed in child #1"); |
| exit(1); |
| } |
| exit(0); |
| } |
| wait(&status); |
| |
| if ((pid1 = FORK_OR_VFORK()) < 0) |
| tst_brkm(TBROK, cleanup, "second fork failed"); |
| |
| if (pid1 == 0) { /* second child */ |
| |
| int rval; |
| |
| /* |
| * set the child's ID to ltpuser2 using seteuid() |
| * so that the ID can be changed back after the |
| * TEST call is made. |
| */ |
| if (seteuid(ltpuser2->pw_uid) != 0) { |
| perror("setreuid failed in child #2"); |
| exit(1); |
| } |
| |
| TEST(chdir(good_dir)); |
| |
| if (TEST_RETURN != -1) { |
| printf("call succeeded unexpectedly\n"); |
| rval = 1; |
| } else if (TEST_ERRNO != EACCES) { |
| printf("didn't get EACCES as expected; got "); |
| rval = 1; |
| } else { |
| printf("got EACCES as expected\n"); |
| rval = 0; |
| } |
| /* Only really required with vfork. */ |
| if (seteuid(0) != 0) { |
| perror("seteuid(0) failed"); |
| rval = 1; |
| } |
| |
| exit(rval); |
| |
| } else { |
| if (wait(&status) == -1) |
| tst_brkm(TBROK | TERRNO, cleanup, |
| "wait failed"); |
| if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) |
| tst_brkm(TBROK, cleanup, |
| "child exited abnormally"); |
| } |
| if (rmdir(good_dir) == -1) { |
| tst_brkm(TBROK | TERRNO, cleanup, |
| "rmdir(%s) failed", good_dir); |
| } |
| } |
| |
| cleanup(); |
| tst_exit(); |
| |
| } |
| |
| void setup(void) |
| { |
| char *cur_dir = NULL; |
| |
| tst_require_root(NULL); |
| |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| TEST_PAUSE; |
| |
| tst_tmpdir(); |
| |
| if ((cur_dir = getcwd(cur_dir, 0)) == NULL) |
| tst_brkm(TBROK | TERRNO, cleanup, "getcwd failed"); |
| |
| sprintf(good_dir, "%s/%d", cur_dir, getpid()); |
| |
| ltpuser1 = my_getpwnam(user1name); |
| ltpuser2 = my_getpwnam(user2name); |
| } |
| |
| void cleanup(void) |
| { |
| TEST_CLEANUP; |
| |
| tst_rmdir(); |
| |
| } |