plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | |
| 20 | /* |
| 21 | * NAME |
| 22 | * execve02.c |
| 23 | * |
| 24 | * DESCRIPTION |
| 25 | * Testcase to check whether execve(2) sets errno to EACCES correctly |
| 26 | * |
| 27 | * ALGORITHM |
| 28 | * 1. Attempt to execve(2) an executable owned by root with |
| 29 | * no execute permissions for the other users, fails when |
| 30 | * execve(2) is used as a non-root user (ltpuser1). The errno |
| 31 | * should be EACCES. |
| 32 | * |
| 33 | * USAGE: <for command-line> |
| 34 | * execve02 -F <test file> [-c n] [-e] [-i n] [-I x] [-P x] [-t] |
| 35 | * where, -c n : Run n copies concurrently. |
| 36 | * -e : Turn on errno logging. |
| 37 | * -i n : Execute test n times. |
| 38 | * -I x : Execute test for x seconds. |
| 39 | * -P x : Pause for x seconds between iterations. |
| 40 | * -t : Turn on syscall timing. |
| 41 | * |
| 42 | * HISTORY |
| 43 | * 07/2001 Ported by Wayne Boyer |
| 44 | * |
subrata_modak | 4374a71 | 2008-04-22 06:57:32 +0000 | [diff] [blame^] | 45 | * 21/04/2008 Renaud Lottiaux (Renaud.Lottiaux@kerlabs.com) |
| 46 | * - Fix concurrency issue. In case of concurrent executions, all tasks |
| 47 | * was using the same file, changing its mode and leading to invalid |
| 48 | * mode for some of them. |
| 49 | * |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 50 | * RESTRICTIONS |
| 51 | * Must run test with the -F <test file> option. |
| 52 | */ |
| 53 | |
| 54 | #include <stdio.h> |
| 55 | #include <unistd.h> |
| 56 | #include <errno.h> |
| 57 | #include <pwd.h> |
subrata_modak | 4374a71 | 2008-04-22 06:57:32 +0000 | [diff] [blame^] | 58 | #include <string.h> |
| 59 | #include <libgen.h> |
robbiew | f7dc1be | 2003-03-14 16:20:37 +0000 | [diff] [blame] | 60 | #include <sys/types.h> |
| 61 | #include <sys/stat.h> |
| 62 | #include <sys/wait.h> |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 63 | #include "test.h" |
| 64 | #include "usctest.h" |
| 65 | |
| 66 | char *TCID = "execve02"; |
| 67 | int TST_TOTAL = 1; |
| 68 | extern int Tst_count; |
| 69 | |
| 70 | void setup(void); |
| 71 | void cleanup(void); |
| 72 | void help(void); |
| 73 | |
| 74 | int exp_enos[] = {EACCES, 0}; |
| 75 | |
| 76 | int Fflag = 0; |
| 77 | char *fname; |
| 78 | |
| 79 | /* for test specific parse_opts options - in this case "-F" */ |
| 80 | option_t options[] = { |
| 81 | {"F:", &Fflag, &fname}, |
| 82 | {NULL, NULL, NULL} |
| 83 | }; |
| 84 | |
| 85 | char user1name[] = "nobody"; |
| 86 | extern struct passwd * my_getpwnam(char *); |
| 87 | struct passwd *ltpuser1; |
| 88 | |
robbiew | f7dc1be | 2003-03-14 16:20:37 +0000 | [diff] [blame] | 89 | int |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 90 | main(int ac, char **av) |
| 91 | { |
| 92 | int lc; /* loop counter */ |
| 93 | char *msg; /* message returned from parse_opts */ |
robbiew | b851d7b | 2001-09-14 20:45:29 +0000 | [diff] [blame] | 94 | int e_code, status, retval=0; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 95 | pid_t pid; |
| 96 | |
| 97 | /* parse standard options */ |
| 98 | if ((msg = parse_opts(ac, av, options, &help)) != (char *)NULL) { |
| 99 | tst_brkm(TBROK, tst_exit, "OPTION PARSING ERROR - %s", msg); |
| 100 | /*NOTREACHED*/ |
| 101 | } |
| 102 | |
| 103 | if (!Fflag) { |
| 104 | tst_resm(TWARN, "You must specify a test executable with" |
| 105 | "the -F option."); |
| 106 | tst_resm(TWARN, "Run '%s -h' for option information.", TCID); |
| 107 | tst_exit(); |
| 108 | } |
| 109 | |
| 110 | setup(); |
| 111 | |
| 112 | TEST_EXP_ENOS(exp_enos); |
| 113 | |
| 114 | /* check looping state if -i option given */ |
| 115 | for (lc = 0; TEST_LOOPING(lc); lc++) { |
| 116 | |
| 117 | /* reset Tst_count in case we are looping */ |
| 118 | Tst_count = 0; |
| 119 | |
| 120 | if (chmod(fname, 0700) != 0) { |
| 121 | tst_resm(TFAIL, "Failed to change permissions of " |
| 122 | "test file"); |
| 123 | } |
| 124 | |
robbiew | d34d581 | 2005-07-11 22:28:09 +0000 | [diff] [blame] | 125 | if ((pid = FORK_OR_VFORK()) == -1) { |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 126 | tst_brkm(TBROK, cleanup, "fork() failed"); |
| 127 | } |
| 128 | |
| 129 | if (pid == 0) { /* child */ |
| 130 | if (seteuid(ltpuser1->pw_uid) == -1) { |
| 131 | tst_brkm(TBROK, cleanup, "setuid() failed"); |
| 132 | } |
| 133 | |
| 134 | TEST(execve(fname, NULL, NULL)); |
| 135 | |
| 136 | TEST_ERROR_LOG(TEST_ERRNO); |
| 137 | |
| 138 | if (TEST_ERRNO != EACCES) { |
robbiew | b079c39 | 2001-09-17 18:37:12 +0000 | [diff] [blame] | 139 | retval=1; |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 140 | tst_resm(TFAIL, "Expected EACCES got %d", |
| 141 | TEST_ERRNO); |
| 142 | } else { |
| 143 | tst_resm(TPASS, "Received EACCES"); |
| 144 | } |
| 145 | |
| 146 | /* change back to root */ |
| 147 | if (seteuid(0) == -1) { |
| 148 | tst_brkm(TBROK, cleanup, "setuid(0) failed"); |
| 149 | } |
| 150 | |
| 151 | /* reset the file permissions */ |
| 152 | if (chmod(fname, 0755) == -1) { |
| 153 | tst_brkm(TBROK, cleanup, "chmod() #2 failed"); |
| 154 | } |
plars | da85874 | 2002-09-25 17:34:14 +0000 | [diff] [blame] | 155 | exit(retval); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 156 | } else { |
robbiew | b851d7b | 2001-09-14 20:45:29 +0000 | [diff] [blame] | 157 | /* wait for the child to finish */ |
| 158 | wait(&status); |
| 159 | /* make sure the child returned a good exit status */ |
| 160 | e_code = status >> 8; |
| 161 | if ((e_code != 0) || (retval != 0)) { |
| 162 | tst_resm(TFAIL, "Failures reported above"); |
| 163 | } |
| 164 | |
| 165 | cleanup(); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 166 | } |
| 167 | } |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 168 | |
| 169 | /*NOTREACHED*/ |
robbiew | f9cb916 | 2003-03-25 18:49:24 +0000 | [diff] [blame] | 170 | return(0); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 171 | } |
| 172 | |
| 173 | /* |
| 174 | * help() - Prints out the help message for the -F option defined |
| 175 | * by this test. |
| 176 | */ |
| 177 | void |
| 178 | help() |
| 179 | { |
| 180 | printf(" -F <test file> : for example, 'execve02 -F test3'\n"); |
| 181 | } |
| 182 | |
| 183 | /* |
| 184 | * setup() - performs all ONE TIME setup for this test. |
| 185 | */ |
| 186 | void |
| 187 | setup() |
| 188 | { |
subrata_modak | 4374a71 | 2008-04-22 06:57:32 +0000 | [diff] [blame^] | 189 | char *cmd, *dirc, *basec, *bname, *dname, *path, *pwd = NULL; |
| 190 | int res; |
| 191 | |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 192 | if (geteuid() != 0) { |
| 193 | tst_brkm(TBROK, tst_exit, "Test must be run as root"); |
| 194 | } |
| 195 | |
| 196 | /* capture signals */ |
| 197 | tst_sig(FORK, DEF_HANDLER, cleanup); |
| 198 | |
| 199 | /* Pause if that option was specified */ |
| 200 | TEST_PAUSE; |
| 201 | |
subrata_modak | 4374a71 | 2008-04-22 06:57:32 +0000 | [diff] [blame^] | 202 | /* Get file name of the passed test file and the absolute path to it. |
| 203 | * We will need these informations to copy the test file in the temp |
| 204 | * directory. |
| 205 | */ |
| 206 | dirc = strdup(fname); |
| 207 | basec = strdup(fname); |
| 208 | dname = dirname(dirc); |
| 209 | bname = basename(basec); |
| 210 | |
| 211 | if (dname[0] == '/') |
| 212 | path = dname; |
| 213 | else { |
| 214 | if ((pwd = getcwd(NULL, 0)) == NULL) { |
| 215 | tst_brkm(TBROK, tst_exit, "Could not get current directory"); |
| 216 | } |
| 217 | path = malloc (strlen(path) + strlen(pwd) + 2); |
| 218 | if (path == NULL) { |
| 219 | tst_brkm(TBROK, tst_exit, "Cannot alloc path string"); |
| 220 | } |
| 221 | sprintf (path, "%s/%s", pwd, dname); |
| 222 | } |
| 223 | |
| 224 | /* make a temp dir and cd to it */ |
| 225 | tst_tmpdir(); |
| 226 | |
| 227 | /* Copy the given test file to the private temp directory. |
| 228 | */ |
| 229 | cmd = malloc (strlen(path) + strlen(bname) + 15); |
| 230 | if (cmd == NULL) { |
| 231 | tst_brkm(TBROK, tst_exit, "Cannot alloc command string"); |
| 232 | } |
| 233 | |
| 234 | sprintf (cmd, "cp -p %s/%s .", path, bname); |
| 235 | res = system (cmd); |
| 236 | free (cmd); |
| 237 | if (res == -1) { |
| 238 | tst_brkm(TBROK, tst_exit, "Cannot copy file %s", fname); |
| 239 | } |
| 240 | |
| 241 | fname = bname; |
| 242 | |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 243 | umask(0); |
| 244 | |
| 245 | ltpuser1 = my_getpwnam(user1name); |
| 246 | } |
| 247 | |
| 248 | /* |
| 249 | * cleanup() - performs all ONE TIME cleanup for this test at |
| 250 | * completion or premature exit. |
| 251 | */ |
| 252 | void |
| 253 | cleanup() |
| 254 | { |
| 255 | /* |
| 256 | * print timing stats if that option was specified. |
| 257 | * print errno log if that option was specified. |
| 258 | */ |
| 259 | TEST_CLEANUP; |
| 260 | |
subrata_modak | 4374a71 | 2008-04-22 06:57:32 +0000 | [diff] [blame^] | 261 | /* remove files and temp dir */ |
| 262 | tst_rmdir(); |
| 263 | |
| 264 | |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 265 | /* exit with return code appropriate for results */ |
| 266 | tst_exit(); |
| 267 | } |