1 /* 2 * Copyright (c) International Business Machines Corp., 2001 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 12 * the GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 19 /* 20 * Test Name: chmod03 21 * 22 * Test Description: 23 * Verify that, chmod(2) will succeed to change the mode of a file 24 * and set the sticky bit on it if invoked by non-root (uid != 0) 25 * process with the following constraints, 26 * - the process is the owner of the file. 27 * - the effective group ID or one of the supplementary group ID's of the 28 * process is equal to the group ID of the file. 29 * 30 * Expected Result: 31 * chmod() should return value 0 on success and succeeds to change 32 * the mode of specified file with sticky bit set on it. 33 * 34 * Algorithm: 35 * Setup: 36 * Setup signal handling. 37 * Create temporary directory. 38 * Pause for SIGUSR1 if option specified. 39 * 40 * Test: 41 * Loop if the proper options are given. 42 * Execute system call 43 * Check return code, if system call failed (return=-1) 44 * Log the errno and Issue a FAIL message. 45 * Otherwise, 46 * Verify the Functionality of system call 47 * if successful, 48 * Issue Functionality-Pass message. 49 * Otherwise, 50 * Issue Functionality-Fail message. 51 * Cleanup: 52 * Print errno log and/or timing stats if options given 53 * Delete the temporary directory created. 54 * 55 * Usage: <for command-line> 56 * chmod03 [-c n] [-e] [-f] [-i n] [-I x] [-p x] [-t] 57 * where, -c n : Run n copies concurrently. 58 * -e : Turn on errno logging. 59 * -f : Turn off functionality Testing. 60 * -i n : Execute test n times. 61 * -I x : Execute test for x seconds. 62 * -P x : Pause for x seconds between iterations. 63 * -t : Turn on syscall timing. 64 * 65 * HISTORY 66 * 07/2001 Ported by Wayne Boyer 67 * 68 * RESTRICTIONS: 69 * This test should be run by 'non-super-user' only. 70 * 71 */ 72 73 #include <stdio.h> 74 #include <sys/types.h> 75 #include <sys/stat.h> 76 #include <fcntl.h> 77 #include <errno.h> 78 #include <string.h> 79 #include <signal.h> 80 #include <pwd.h> 81 82 #include "test.h" 83 #include "safe_macros.h" 84 85 #define FILE_MODE S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH 86 #define PERMS 01777 /* 87 * Mode permissions of test file with sticky 88 * bit set. 89 */ 90 #define TESTFILE "testfile" 91 92 char *TCID = "chmod03"; 93 int TST_TOTAL = 1; 94 char nobody_uid[] = "nobody"; 95 struct passwd *ltpuser; 96 97 void setup(); /* Main setup function for the test */ 98 void cleanup(); /* Main cleanup function for the test */ 99 100 int main(int ac, char **av) 101 { 102 struct stat stat_buf; 103 int lc; 104 mode_t file_mode; 105 106 tst_parse_opts(ac, av, NULL, NULL); 107 108 setup(); 109 110 for (lc = 0; TEST_LOOPING(lc); lc++) { 111 112 tst_count = 0; 113 114 TEST(chmod(TESTFILE, PERMS)); 115 116 if (TEST_RETURN == -1) { 117 tst_resm(TFAIL | TTERRNO, "chmod(%s, %#o) failed", 118 TESTFILE, PERMS); 119 continue; 120 } 121 if (stat(TESTFILE, &stat_buf) < 0) { 122 tst_brkm(TFAIL | TERRNO, cleanup, 123 "stat(%s) failed", TESTFILE); 124 } 125 file_mode = stat_buf.st_mode; 126 127 /* Verify STICKY BIT set on testfile */ 128 if ((file_mode & PERMS) != PERMS) { 129 tst_resm(TFAIL, "%s: Incorrect modes 0%3o, " 130 "Expected 0777", TESTFILE, file_mode); 131 } else { 132 tst_resm(TPASS, "Functionality of " 133 "chmod(%s, %#o) successful", 134 TESTFILE, PERMS); 135 } 136 } 137 138 cleanup(); 139 tst_exit(); 140 } 141 142 void setup(void) 143 { 144 int fd; 145 146 tst_sig(NOFORK, DEF_HANDLER, cleanup); 147 148 tst_require_root(); 149 ltpuser = getpwnam(nobody_uid); 150 if (ltpuser == NULL) 151 tst_brkm(TBROK | TERRNO, NULL, "getpwnam failed"); 152 SAFE_SETUID(NULL, ltpuser->pw_uid); 153 154 TEST_PAUSE; 155 156 tst_tmpdir(); 157 158 /* 159 * Create a test file under temporary directory with specified 160 * mode permissios and set the ownership of the test file to the 161 * uid/gid of guest user. 162 */ 163 if ((fd = open(TESTFILE, O_RDWR | O_CREAT, FILE_MODE)) == -1) { 164 tst_brkm(TBROK | TERRNO, cleanup, 165 "open(%s, O_RDWR|O_CREAT, %#o) failed", 166 TESTFILE, FILE_MODE); 167 } 168 169 SAFE_CLOSE(cleanup, fd); 170 } 171 172 /* 173 * void 174 * cleanup() - performs all ONE TIME cleanup for this test at 175 * completion or premature exit. 176 * Delete the testfile and temporary directory created in setup(). 177 */ 178 void cleanup(void) 179 { 180 181 tst_rmdir(); 182 183 } 184
