subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 1 | /*************************************************************************************/ |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 2 | /* */ |
| 3 | /* Copyright (C) 2008, Michael Kerrisk <mtk.manpages@gmail.com>, */ |
| 4 | /* Copyright (C) 2008, Linux Foundation */ |
| 5 | /* */ |
| 6 | /* This program is free software; you can redistribute it and/or modify */ |
| 7 | /* it under the terms of the GNU General Public License as published by */ |
| 8 | /* the Free Software Foundation; either version 2 of the License, or */ |
| 9 | /* (at your option) any later version. */ |
| 10 | /* */ |
| 11 | /* This program is distributed in the hope that it will be useful, */ |
| 12 | /* but WITHOUT ANY WARRANTY; without even the implied warranty of */ |
| 13 | /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See */ |
| 14 | /* the GNU General Public License for more details. */ |
| 15 | /* */ |
| 16 | /* You should have received a copy of the GNU General Public License */ |
| 17 | /* along with this program; if not, write to the Free Software */ |
Wanlong Gao | 4548c6c | 2012-10-19 18:03:36 +0800 | [diff] [blame] | 18 | /* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 19 | /*************************************************************************************/ |
| 20 | /* */ |
| 21 | /* File: utimnsat01.c */ |
| 22 | /* Description: A command-line interface for testing the utimensat() system call. */ |
| 23 | /* Author: Michael Kerrisk <mtk.manpages@gmail.com> */ |
| 24 | /* History: */ |
| 25 | /* 17 Mar 2008 Initial creation, */ |
| 26 | /* 31 May 2008 Reworked for easier test automation, */ |
| 27 | /* 2 June 2008 Renamed from t_utimensat.c to test_utimensat.c, */ |
| 28 | /* 05 June 2008 Submitted to LTP by Subrata Modak <subrata@linux.vnet.ibm.com> */ |
| 29 | /*************************************************************************************/ |
| 30 | |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 31 | #define _GNU_SOURCE |
| 32 | #define _ATFILE_SOURCE |
| 33 | #include <stdio.h> |
| 34 | #include <time.h> |
| 35 | #include <errno.h> |
| 36 | #include <stdlib.h> |
| 37 | #include <unistd.h> |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 38 | #include <sys/syscall.h> |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 39 | #include <fcntl.h> |
| 40 | #include <string.h> |
| 41 | #include <sys/stat.h> |
Garrett Cooper | 5df0260 | 2010-12-21 11:24:30 -0800 | [diff] [blame] | 42 | #include "test.h" |
subrata_modak | 317251d | 2008-07-21 10:38:43 +0000 | [diff] [blame] | 43 | #include "linux_syscall_numbers.h" |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 44 | |
Cyril Hrubis | fdce7d5 | 2013-04-04 18:35:48 +0200 | [diff] [blame] | 45 | char *TCID = "utimensat01"; |
| 46 | int TST_TOTAL = 0; |
subrata_modak | 47745f6 | 2008-12-12 07:24:37 +0000 | [diff] [blame] | 47 | |
subrata_modak | 24fc213 | 2008-11-11 05:57:38 +0000 | [diff] [blame] | 48 | #define cleanup tst_exit |
| 49 | |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 50 | /* We use EXIT_FAILURE for an expected failure from utimensat() |
| 51 | (e.g., EACCES and EPERM), and one of the following for unexpected |
| 52 | failures (i.e., something broke in our test setup). */ |
| 53 | |
subrata_modak | 0f27b4f | 2008-09-05 06:14:11 +0000 | [diff] [blame] | 54 | #ifndef AT_FDCWD |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 55 | #define AT_FDCWD -100 |
subrata_modak | 0f27b4f | 2008-09-05 06:14:11 +0000 | [diff] [blame] | 56 | #endif |
| 57 | #ifndef AT_SYMLINK_NOFOLLOW |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 58 | #define AT_SYMLINK_NOFOLLOW 0x100 |
subrata_modak | 0f27b4f | 2008-09-05 06:14:11 +0000 | [diff] [blame] | 59 | #endif |
| 60 | |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 61 | #define EXIT_bad_usage 3 |
| 62 | #define EXIT_failed_syscall 3 |
| 63 | |
| 64 | #define errExit(msg) do { perror(msg); exit(EXIT_failed_syscall); \ |
| 65 | } while (0) |
| 66 | |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 67 | #define UTIME_NOW ((1l << 30) - 1l) |
| 68 | #define UTIME_OMIT ((1l << 30) - 2l) |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 69 | |
| 70 | static inline int |
| 71 | utimensat_sc(int dirfd, const char *pathname, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 72 | const struct timespec times[2], int flags) |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 73 | { |
Jan Stancek | 359980f | 2013-02-15 10:16:05 +0100 | [diff] [blame] | 74 | return ltp_syscall(__NR_utimensat, dirfd, pathname, times, flags); |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 75 | } |
| 76 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 77 | static void usageError(char *progName) |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 78 | { |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 79 | fprintf(stderr, "Usage: %s pathname [atime-sec " |
| 80 | "atime-nsec mtime-sec mtime-nsec]\n\n", progName); |
| 81 | fprintf(stderr, "Permitted options are:\n"); |
| 82 | fprintf(stderr, " [-d path] " |
| 83 | "open a directory file descriptor" |
| 84 | " (instead of using AT_FDCWD)\n"); |
| 85 | fprintf(stderr, " -q Quiet\n"); |
| 86 | fprintf(stderr, " -w Open directory file " |
| 87 | "descriptor with O_RDWR|O_APPEND\n" |
| 88 | " (instead of O_RDONLY)\n"); |
| 89 | fprintf(stderr, " -n Use AT_SYMLINK_NOFOLLOW\n"); |
| 90 | fprintf(stderr, "\n"); |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 91 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 92 | fprintf(stderr, "pathname can be \"NULL\" to use NULL " |
| 93 | "argument in call\n"); |
| 94 | fprintf(stderr, "\n"); |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 95 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 96 | fprintf(stderr, "Either nsec field can be\n"); |
| 97 | fprintf(stderr, " 'n' for UTIME_NOW\n"); |
| 98 | fprintf(stderr, " 'o' for UTIME_OMIT\n"); |
| 99 | fprintf(stderr, "\n"); |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 100 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 101 | fprintf(stderr, "If the time fields are omitted, " |
| 102 | "then a NULL 'times' argument is used\n"); |
| 103 | fprintf(stderr, "\n"); |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 104 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 105 | exit(EXIT_bad_usage); |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 106 | } |
| 107 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 108 | int main(int argc, char *argv[]) |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 109 | { |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 110 | int flags, dirfd, opt, oflag; |
| 111 | struct timespec ts[2]; |
| 112 | struct timespec *tsp; |
| 113 | char *pathname, *dirfdPath; |
| 114 | struct stat sb; |
| 115 | int verbose; |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 116 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 117 | /* Command-line argument parsing */ |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 118 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 119 | flags = 0; |
| 120 | verbose = 1; |
| 121 | dirfd = AT_FDCWD; |
| 122 | dirfdPath = NULL; |
| 123 | oflag = O_RDONLY; |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 124 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 125 | while ((opt = getopt(argc, argv, "d:nqw")) != -1) { |
| 126 | switch (opt) { |
| 127 | case 'd': |
| 128 | dirfdPath = optarg; |
| 129 | break; |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 130 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 131 | case 'n': |
| 132 | flags |= AT_SYMLINK_NOFOLLOW; |
| 133 | if (verbose) |
| 134 | printf("Not following symbolic links\n"); |
| 135 | break; |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 136 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 137 | case 'q': |
| 138 | verbose = 0; |
| 139 | break; |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 140 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 141 | case 'w': |
| 142 | oflag = O_RDWR | O_APPEND; |
| 143 | break; |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 144 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 145 | default: |
| 146 | usageError(argv[0]); |
| 147 | } |
| 148 | } |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 149 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 150 | if ((optind + 5 != argc) && (optind + 1 != argc)) |
| 151 | usageError(argv[0]); |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 152 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 153 | if (dirfdPath != NULL) { |
| 154 | dirfd = open(dirfdPath, oflag); |
| 155 | if (dirfd == -1) |
| 156 | errExit("open"); |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 157 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 158 | if (verbose) { |
| 159 | printf("Opened dirfd %d", oflag); |
| 160 | if ((oflag & O_ACCMODE) == O_RDWR) |
| 161 | printf(" O_RDWR"); |
| 162 | if (oflag & O_APPEND) |
| 163 | printf(" O_APPEND"); |
| 164 | printf(": %s\n", dirfdPath); |
| 165 | } |
| 166 | } |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 167 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 168 | pathname = (strcmp(argv[optind], "NULL") == 0) ? NULL : argv[optind]; |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 169 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 170 | /* Either, we get no values for 'times' fields, in which case |
| 171 | we give a NULL pointer to utimensat(), or we get four values, |
| 172 | for secs+nsecs for each of atime and mtime. The special |
| 173 | values 'n' and 'o' can be used for tv_nsec settings of |
| 174 | UTIME_NOW and UTIME_OMIT, respectively. */ |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 175 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 176 | if (argc == optind + 1) { |
| 177 | tsp = NULL; |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 178 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 179 | } else { |
| 180 | ts[0].tv_sec = atoi(argv[optind + 1]); |
| 181 | if (argv[optind + 2][0] == 'n') { |
| 182 | ts[0].tv_nsec = UTIME_NOW; |
| 183 | } else if (argv[optind + 2][0] == 'o') { |
| 184 | ts[0].tv_nsec = UTIME_OMIT; |
| 185 | } else { |
| 186 | ts[0].tv_nsec = atoi(argv[optind + 2]); |
| 187 | } |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 188 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 189 | ts[1].tv_sec = atoi(argv[optind + 3]); |
| 190 | if (argv[optind + 4][0] == 'n') { |
| 191 | ts[1].tv_nsec = UTIME_NOW; |
| 192 | } else if (argv[optind + 4][0] == 'o') { |
| 193 | ts[1].tv_nsec = UTIME_OMIT; |
| 194 | } else { |
| 195 | ts[1].tv_nsec = atoi(argv[optind + 4]); |
| 196 | } |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 197 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 198 | tsp = ts; |
| 199 | } |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 200 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 201 | /* For testing purposes, it may have been useful to run this program |
| 202 | as set-user-ID-root so that a directory file descriptor could be |
| 203 | opened as root. (This allows us to obtain a file descriptor even |
| 204 | if normal user doesn't have permissions on the file.) Now we |
| 205 | reset to the real UID before making the utimensat() call, so that |
| 206 | the permission checking for the utimensat() call is performed |
| 207 | under that UID. */ |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 208 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 209 | if (geteuid() == 0) { |
| 210 | uid_t u; |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 211 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 212 | u = getuid(); |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 213 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 214 | if (verbose) |
| 215 | printf("Resetting UIDs to %ld\n", (long)u); |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 216 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 217 | if (setresuid(u, u, u) == -1) |
| 218 | errExit("setresuid"); |
| 219 | } |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 220 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 221 | /* Display information allowing user to verify arguments for call */ |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 222 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 223 | if (verbose) { |
| 224 | printf("dirfd is %d\n", dirfd); |
| 225 | printf("pathname is %s\n", pathname); |
| 226 | printf("tsp is %p", tsp); |
| 227 | if (tsp != NULL) { |
| 228 | printf("; struct = { %ld, %ld } { %ld, %ld }", |
| 229 | (long)tsp[0].tv_sec, (long)tsp[0].tv_nsec, |
| 230 | (long)tsp[1].tv_sec, (long)tsp[1].tv_nsec); |
| 231 | } |
| 232 | printf("\n"); |
| 233 | printf("flags is %d\n", flags); |
| 234 | } |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 235 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 236 | /* Make the call and see what happened */ |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 237 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 238 | if (utimensat_sc(dirfd, pathname, tsp, flags) == -1) { |
| 239 | if (errno == EPERM) { |
| 240 | if (verbose) |
| 241 | printf("utimensat() failed with EPERM\n"); |
| 242 | else |
| 243 | printf("EPERM\n"); |
| 244 | exit(EXIT_FAILURE); |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 245 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 246 | } else if (errno == EACCES) { |
| 247 | if (verbose) |
| 248 | printf("utimensat() failed with EACCES\n"); |
| 249 | else |
| 250 | printf("EACCES\n"); |
| 251 | exit(EXIT_FAILURE); |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 252 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 253 | } else if (errno == EINVAL) { |
| 254 | if (verbose) |
| 255 | printf("utimensat() failed with EINVAL\n"); |
| 256 | else |
| 257 | printf("EINVAL\n"); |
| 258 | exit(EXIT_FAILURE); |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 259 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 260 | } else { /* Unexpected failure case from utimensat() */ |
| 261 | errExit("utimensat"); |
| 262 | } |
| 263 | } |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 264 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 265 | if (verbose) |
| 266 | printf("utimensat() succeeded\n"); |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 267 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 268 | if (stat((pathname != NULL) ? pathname : dirfdPath, &sb) == -1) |
| 269 | errExit("stat"); |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 270 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 271 | if (verbose) { |
| 272 | printf("Last file access: %s", ctime(&sb.st_atime)); |
| 273 | printf("Last file modification: %s", ctime(&sb.st_mtime)); |
| 274 | printf("Last status change: %s", ctime(&sb.st_ctime)); |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 275 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 276 | } else { |
| 277 | printf("SUCCESS %ld %ld\n", (long)sb.st_atime, |
| 278 | (long)sb.st_mtime); |
| 279 | } |
subrata_modak | 2743968 | 2008-06-06 08:44:40 +0000 | [diff] [blame] | 280 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 281 | exit(EXIT_SUCCESS); |
Garrett Cooper | 5df0260 | 2010-12-21 11:24:30 -0800 | [diff] [blame] | 282 | } |