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: fchmod04 22 * 23 * Test Description: 24 * Verify that, fchmod(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 * fchmod() 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 * fchmod04 [-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 <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 91int fd; /* file descriptor for test directory */ 92char *TCID = "fchmod04"; 93int TST_TOTAL = 1; 94 95char nobody_uid[] = "nobody"; 96struct passwd *ltpuser; 97 98void setup(); 99void cleanup(); 100 101int main(int ac, char **av) 102{ 103 struct stat stat_buf; /* stat struct. */ 104 int lc; 105 mode_t dir_mode; /* mode permissions set on testdirectory */ 106 107 tst_parse_opts(ac, av, NULL, NULL); 108 109 setup(); 110 111 for (lc = 0; TEST_LOOPING(lc); lc++) { 112 113 tst_count = 0; 114 115 /* 116 * Call fchmod(2) with mode argument to 117 * set sticky bit on TESTDIR 118 */ 119 TEST(fchmod(fd, PERMS)); 120 121 if (TEST_RETURN == -1) { 122 tst_resm(TFAIL | TTERRNO, "fchmod failed"); 123 continue; 124 } 125 if (fstat(fd, &stat_buf) == -1) 126 tst_brkm(TFAIL | TERRNO, cleanup, 127 "fstat failed"); 128 dir_mode = stat_buf.st_mode; 129 130 if ((dir_mode & PERMS) == PERMS) 131 tst_resm(TPASS, "Functionality of fchmod(%d, " 132 "%#o) successful", fd, PERMS); 133 else 134 tst_resm(TFAIL, "%s: Incorrect modes 0%03o, " 135 "Expected 0%03o", 136 TESTDIR, dir_mode, PERMS); 137 } 138 139 cleanup(); 140 tst_exit(); 141} 142 143/* 144 * void 145 * setup() - performs all ONE TIME setup for this test. 146 * Create a temporary directory and cd to it. 147 * Create another test directory under temporary directory. 148 * Open the test directory for reading. 149 */ 150void setup(void) 151{ 152 tst_require_root(); 153 154 tst_sig(NOFORK, DEF_HANDLER, cleanup); 155 156 /* Switch to nobody user for correct error code collection */ 157 ltpuser = getpwnam(nobody_uid); 158 if (seteuid(ltpuser->pw_uid) == -1) { 159 tst_resm(TINFO, "seteuid failed to " 160 "to set the effective uid to %d", ltpuser->pw_uid); 161 perror("seteuid"); 162 } 163 164 TEST_PAUSE; 165 166 tst_tmpdir(); 167 168 /* 169 * Create a test directory under temporary directory with specified 170 * mode permissios and open it for reading/writing. 171 */ 172 if (mkdir(TESTDIR, DIR_MODE) < 0) { 173 tst_brkm(TBROK, cleanup, "mkdir(2) of %s failed", TESTDIR); 174 } 175 if ((fd = open(TESTDIR, O_RDONLY)) == -1) { 176 tst_brkm(TBROK, cleanup, 177 "open(%s, O_RDONLY) failed, errno=%d : %s", 178 TESTDIR, errno, strerror(errno)); 179 } 180} 181 182/* 183 * void 184 * cleanup() - performs all ONE TIME cleanup for this test at 185 * completion or premature exit. 186 * Close the test directory opened during setup(). 187 * Remove the test directory and temporary directory created in setup(). 188 */ 189void cleanup(void) 190{ 191 192 /* Close the test directory opened during setup() */ 193 if (close(fd) == -1) { 194 tst_brkm(TBROK, NULL, 195 "close(%s) Failed, errno=%d : %s", 196 TESTDIR, errno, strerror(errno)); 197 } 198 199 tst_rmdir(); 200 201} 202