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: chmod07 22 * 23 * Test Description: 24 * Verify that, chmod(2) will succeed to change the mode of a file/directory 25 * and sets the sticky bit on it if invoked by root (uid = 0) process with 26 * the following constraints, 27 * - the process is not the owner of the file/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 file/directory. 30 * 31 * Expected Result: 32 * chmod() should return value 0 on success and succeeds to set sticky bit 33 * on the specified file. 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 * chmod07 [-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 'super-user' (root) 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 <grp.h> 81 #include <pwd.h> 82 83 #include "test.h" 84 85 #define LTPUSER "nobody" 86 #ifdef ANDROID 87 #define LTPGRP "sdcard_r" 88 #else 89 #define LTPGRP "users" 90 #endif 91 #define FILE_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH) 92 #define PERMS 01777 /* 93 * Mode permissions of test file with sticky 94 * bit set. 95 */ 96 #define TESTFILE "testfile" 97 98 char *TCID = "chmod07"; 99 int TST_TOTAL = 1; 100 101 void setup(); /* Main setup function for the test */ 102 void cleanup(); /* Main cleanup function for the test */ 103 104 int main(int ac, char **av) 105 { 106 struct stat stat_buf; /* stat(2) struct contents */ 107 int lc; 108 109 tst_parse_opts(ac, av, NULL, NULL); 110 111 setup(); 112 113 for (lc = 0; TEST_LOOPING(lc); lc++) { 114 115 tst_count = 0; 116 117 /* 118 * Call chmod(2) with specified mode argument 119 * (sticky-bit set) on testfile. 120 */ 121 TEST(chmod(TESTFILE, PERMS)); 122 123 if (TEST_RETURN == -1) { 124 tst_resm(TFAIL | TTERRNO, "chmod(%s, %#o) failed", 125 TESTFILE, PERMS); 126 continue; 127 } 128 /* 129 * Get the testfile information using 130 * stat(2). 131 */ 132 if (stat(TESTFILE, &stat_buf) == -1) 133 tst_brkm(TFAIL | TTERRNO, cleanup, 134 "stat failed"); 135 136 /* Check for expected mode permissions */ 137 if ((stat_buf.st_mode & PERMS) == PERMS) 138 tst_resm(TPASS, "Functionality of " 139 "chmod(%s, %#o) successful", 140 TESTFILE, PERMS); 141 else 142 tst_resm(TFAIL, "%s: Incorrect modes 0%03o; " 143 "expected 0%03o", TESTFILE, 144 stat_buf.st_mode, PERMS); 145 } 146 147 cleanup(); 148 tst_exit(); 149 } 150 151 /* 152 * void 153 * setup() - performs all ONE TIME setup for this test. 154 * Create a temporary directory and change directory to it. 155 * Create a test file under temporary directory and close it 156 * Change the ownership of test file to that of "ltpuser1" user. 157 */ 158 void setup(void) 159 { 160 struct passwd *ltpuser; /* password struct for ltpuser1 */ 161 struct group *ltpgroup; /* group struct for ltpuser1 */ 162 int fd; /* file descriptor variable */ 163 gid_t group1_gid; /* user and process group id's */ 164 uid_t user1_uid; 165 166 tst_sig(FORK, DEF_HANDLER, cleanup); 167 168 TEST_PAUSE; 169 170 tst_require_root(); 171 172 tst_tmpdir(); 173 174 /* Get the uid of guest user - ltpuser1 */ 175 if ((ltpuser = getpwnam(LTPUSER)) == NULL) 176 tst_brkm(TBROK, cleanup, "getpwnam failed"); 177 user1_uid = ltpuser->pw_uid; 178 179 /* Get the group id of guest user - ltpuser1 */ 180 if ((ltpgroup = getgrnam(LTPGRP)) == NULL) 181 tst_brkm(TBROK, cleanup, "getgrnam failed"); 182 group1_gid = ltpgroup->gr_gid; 183 184 fd = open(TESTFILE, O_RDWR | O_CREAT, FILE_MODE); 185 if (fd == -1) 186 tst_brkm(TBROK | TERRNO, cleanup, 187 "open(%s, O_RDWR|O_CREAT, %#o) failed", 188 TESTFILE, FILE_MODE); 189 if (close(fd) == -1) 190 tst_brkm(TBROK, cleanup, "close(%s) failed", TESTFILE); 191 if (chown(TESTFILE, user1_uid, group1_gid) == -1) 192 tst_brkm(TBROK | TERRNO, cleanup, "chown(%s) failed", TESTFILE); 193 194 if (setgid(group1_gid) == -1) 195 tst_brkm(TBROK | TERRNO, cleanup, "setgid(%d) failed", 196 group1_gid); 197 } 198 199 void cleanup(void) 200 { 201 tst_rmdir(); 202 } 203
