1 /* 2 * Copyright (c) International Business Machines Corp., 2001 3 * Ported by Wayne Boyer 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 13 * the GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 18 */ 19 20 /* 21 * Test to check the error and trivial conditions in setuid 22 */ 23 24 #include <errno.h> 25 #include <pwd.h> 26 #include <sys/types.h> 27 #include <sys/stat.h> 28 #include <unistd.h> 29 30 #include "test.h" 31 #include "compat_16.h" 32 33 #define ROOT_USER 0 34 35 char *TCID = "setuid03"; 36 int TST_TOTAL = 1; 37 38 static char nobody_uid[] = "nobody"; 39 static struct passwd *ltpuser; 40 41 static void setup(void); 42 static void cleanup(void); 43 44 int main(int ac, char **av) 45 { 46 int lc; 47 48 tst_parse_opts(ac, av, NULL, NULL); 49 50 setup(); 51 52 for (lc = 0; TEST_LOOPING(lc); lc++) { 53 tst_count = 0; 54 55 TEST(SETUID(cleanup, ROOT_USER)); 56 57 if (TEST_RETURN != -1) { 58 tst_resm(TFAIL, "call succeeded unexpectedly"); 59 continue; 60 } 61 62 if (TEST_ERRNO == EPERM) { 63 tst_resm(TPASS, "setuid returned errno EPERM"); 64 } else { 65 tst_resm(TFAIL, "setuid returned unexpected errno - %d", 66 TEST_ERRNO); 67 } 68 } 69 70 cleanup(); 71 tst_exit(); 72 } 73 74 static void setup(void) 75 { 76 tst_require_root(); 77 78 /* Switch to nobody user for correct error code collection */ 79 ltpuser = getpwnam(nobody_uid); 80 if (ltpuser == NULL) 81 tst_brkm(TBROK, cleanup, "getpwnam failed for user id %s", 82 nobody_uid); 83 84 if (setuid(ltpuser->pw_uid) == -1) { 85 tst_resm(TINFO, "setuid failed to " 86 "to set the effective uid to %d", ltpuser->pw_uid); 87 perror("setuid"); 88 } 89 90 tst_sig(FORK, DEF_HANDLER, cleanup); 91 92 umask(0); 93 94 TEST_PAUSE; 95 } 96 97 static void cleanup(void) 98 { 99 } 100