1 /* 2 * 3 * Copyright (c) International Business Machines Corp., 2001 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 Name: chmod04 22 * 23 * Test Description: 24 * Verify that, chmod(2) will succeed to change the mode of a directory 25 * and set the sticky bit on it if invoked by non-root (uid != 0) process 26 * with the following constraints, 27 * - the process is the owner of the directory. 28 * - the effective group ID or one of the supplementary group ID's of the 29 * process is equal to the group ID of the directory. 30 * 31 * Expected Result: 32 * chmod() should return value 0 on success and succeeds to set sticky bit 33 * on the specified directory. 34 * 35 * Algorithm: 36 * Setup: 37 * Setup signal handling. 38 * Create temporary directory. 39 * Pause for SIGUSR1 if option specified. 40 * 41 * Test: 42 * Loop if the proper options are given. 43 * Execute system call 44 * Check return code, if system call failed (return=-1) 45 * Log the errno and Issue a FAIL message. 46 * Otherwise, 47 * Verify the Functionality of system call 48 * if successful, 49 * Issue Functionality-Pass message. 50 * Otherwise, 51 * Issue Functionality-Fail message. 52 * Cleanup: 53 * Print errno log and/or timing stats if options given 54 * Delete the temporary directory created. 55 * 56 * Usage: <for command-line> 57 * chmod04 [-c n] [-f] [-i n] [-I x] [-P x] [-t] 58 * where, -c n : Run n copies concurrently. 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 <sys/fcntl.h> 77 #include <errno.h> 78 #include <string.h> 79 #include <signal.h> 80 #include <pwd.h> 81 82 #include "test.h" 83 84 #define DIR_MODE S_IRWXU | S_IRWXG | S_IRWXO 85 #define PERMS 01777 /* 86 * Mode permissions of test directory with 87 * sticky bit set. 88 */ 89 #define TESTDIR "testdir_4" 90 91 char *TCID = "chmod04"; 92 int TST_TOTAL = 1; 93 char nobody_uid[] = "nobody"; 94 struct passwd *ltpuser; 95 96 void setup(); 97 void cleanup(); 98 99 int main(int ac, char **av) 100 { 101 struct stat stat_buf; /* stat struct. */ 102 int lc; 103 mode_t dir_mode; /* mode permissions set on testdirectory */ 104 105 tst_parse_opts(ac, av, NULL, NULL); 106 107 setup(); 108 109 for (lc = 0; TEST_LOOPING(lc); lc++) { 110 111 tst_count = 0; 112 113 /* 114 * Call chmod(2) with mode argument to 115 * set sticky bit on TESTDIR 116 */ 117 TEST(chmod(TESTDIR, PERMS)); 118 119 if (TEST_RETURN == -1) { 120 tst_resm(TFAIL | TTERRNO, "chmod(%s, %#o) failed", 121 TESTDIR, PERMS); 122 continue; 123 } 124 125 /* 126 * Get the file information using 127 * stat(2). 128 */ 129 if (stat(TESTDIR, &stat_buf) < 0) { 130 tst_brkm(TFAIL, cleanup, 131 "stat(2) of %s failed, errno:%d", 132 TESTDIR, TEST_ERRNO); 133 } 134 dir_mode = stat_buf.st_mode; 135 136 /* Verify STICKY BIT SET on directory */ 137 if ((dir_mode & PERMS) == PERMS) { 138 tst_resm(TPASS, "Functionality of " 139 "chmod(%s, %#o) successful", 140 TESTDIR, PERMS); 141 } else { 142 tst_resm(TFAIL, "%s: Incorrect modes 0%03o, " 143 "Expected 0%03o", 144 TESTDIR, dir_mode, PERMS); 145 } 146 } 147 148 cleanup(); 149 tst_exit(); 150 } 151 152 /* 153 * void 154 * setup() - performs all ONE TIME setup for this test. 155 * Create a temporary directory and cd to it. 156 * Create another test directory under temporary directory. 157 */ 158 void setup(void) 159 { 160 161 tst_sig(NOFORK, DEF_HANDLER, cleanup); 162 163 tst_require_root(); 164 ltpuser = getpwnam(nobody_uid); 165 if (setuid(ltpuser->pw_uid) == -1) 166 tst_resm(TINFO | TERRNO, "setuid(%u) failed", ltpuser->pw_uid); 167 168 TEST_PAUSE; 169 170 tst_tmpdir(); 171 172 /* 173 * Create a test directory under temporary directory with specified 174 * mode permissios. 175 */ 176 if (mkdir(TESTDIR, DIR_MODE) < 0) { 177 tst_brkm(TBROK, cleanup, "mkdir(2) of %s failed", TESTDIR); 178 } 179 } 180 181 /* 182 * void 183 * cleanup() - performs all ONE TIME cleanup for this test at 184 * completion or premature exit. 185 * Remove the test directory and temporary directory created in setup(). 186 */ 187 void cleanup(void) 188 { 189 190 tst_rmdir(); 191 192 } 193
