1 /* 2 * chattr.c - Change file attributes on an ext2 file system 3 * 4 * Copyright (C) 1993, 1994 Remy Card <card (at) masi.ibp.fr> 5 * Laboratoire MASI, Institut Blaise Pascal 6 * Universite Pierre et Marie Curie (Paris VI) 7 * 8 * This file can be redistributed under the terms of the GNU General 9 * Public License 10 */ 11 12 /* 13 * History: 14 * 93/10/30 - Creation 15 * 93/11/13 - Replace stat() calls by lstat() to avoid loops 16 * 94/02/27 - Integrated in Ted's distribution 17 * 98/12/29 - Ignore symlinks when working recursively (G M Sipe) 18 * 98/12/29 - Display version info only when -V specified (G M Sipe) 19 */ 20 21 #define _LARGEFILE64_SOURCE 22 23 #include "config.h" 24 #include <sys/types.h> 25 #include <dirent.h> 26 #include <fcntl.h> 27 #include <stdio.h> 28 #include <stdlib.h> 29 #include <unistd.h> 30 #include <string.h> 31 #ifdef HAVE_ERRNO_H 32 #include <errno.h> 33 #endif 34 #include <sys/param.h> 35 #include <sys/stat.h> 36 #include "ext2fs/ext2_fs.h" 37 38 #ifdef __GNUC__ 39 #define EXT2FS_ATTR(x) __attribute__(x) 40 #else 41 #define EXT2FS_ATTR(x) 42 #endif 43 44 #ifndef S_ISLNK /* So we can compile even with gcc-warn */ 45 # ifdef __S_IFLNK 46 # define S_ISLNK(mode) __S_ISTYPE((mode), __S_IFLNK) 47 # else 48 # define S_ISLNK(mode) 0 49 # endif 50 #endif 51 52 #include "et/com_err.h" 53 #include "e2p/e2p.h" 54 #include "support/nls-enable.h" 55 56 #include "../version.h" 57 58 static const char * program_name = "chattr"; 59 60 static int add; 61 static int rem; 62 static int set; 63 static int set_version; 64 65 static unsigned long version; 66 67 static int set_project; 68 static unsigned long project; 69 70 static int recursive; 71 static int verbose; 72 static int silent; 73 74 static unsigned long af; 75 static unsigned long rf; 76 static unsigned long sf; 77 78 #ifdef _LFS64_LARGEFILE 79 #define LSTAT lstat64 80 #define STRUCT_STAT struct stat64 81 #else 82 #define LSTAT lstat 83 #define STRUCT_STAT struct stat 84 #endif 85 86 static void usage(void) 87 { 88 fprintf(stderr, 89 _("Usage: %s [-pRVf] [-+=aAcCdDeijPsStTu] [-v version] files...\n"), 90 program_name); 91 exit(1); 92 } 93 94 struct flags_char { 95 unsigned long flag; 96 char optchar; 97 }; 98 99 static const struct flags_char flags_array[] = { 100 { EXT2_NOATIME_FL, 'A' }, 101 { EXT2_SYNC_FL, 'S' }, 102 { EXT2_DIRSYNC_FL, 'D' }, 103 { EXT2_APPEND_FL, 'a' }, 104 { EXT2_COMPR_FL, 'c' }, 105 { EXT2_NODUMP_FL, 'd' }, 106 { EXT4_EXTENTS_FL, 'e'}, 107 { EXT2_IMMUTABLE_FL, 'i' }, 108 { EXT3_JOURNAL_DATA_FL, 'j' }, 109 { EXT4_PROJINHERIT_FL, 'P' }, 110 { EXT2_SECRM_FL, 's' }, 111 { EXT2_UNRM_FL, 'u' }, 112 { EXT2_NOTAIL_FL, 't' }, 113 { EXT2_TOPDIR_FL, 'T' }, 114 { FS_NOCOW_FL, 'C' }, 115 { 0, 0 } 116 }; 117 118 static unsigned long get_flag(char c) 119 { 120 const struct flags_char *fp; 121 122 for (fp = flags_array; fp->flag != 0; fp++) { 123 if (fp->optchar == c) 124 return fp->flag; 125 } 126 return 0; 127 } 128 129 130 static int decode_arg (int * i, int argc, char ** argv) 131 { 132 char * p; 133 char * tmp; 134 unsigned long fl; 135 136 switch (argv[*i][0]) 137 { 138 case '-': 139 for (p = &argv[*i][1]; *p; p++) { 140 if (*p == 'R') { 141 recursive = 1; 142 continue; 143 } 144 if (*p == 'V') { 145 verbose = 1; 146 continue; 147 } 148 if (*p == 'f') { 149 silent = 1; 150 continue; 151 } 152 if (*p == 'p') { 153 (*i)++; 154 if (*i >= argc) 155 usage (); 156 project = strtol (argv[*i], &tmp, 0); 157 if (*tmp) { 158 com_err (program_name, 0, 159 _("bad project - %s\n"), 160 argv[*i]); 161 usage (); 162 } 163 set_project = 1; 164 continue; 165 } 166 if (*p == 'v') { 167 (*i)++; 168 if (*i >= argc) 169 usage (); 170 version = strtol (argv[*i], &tmp, 0); 171 if (*tmp) { 172 com_err (program_name, 0, 173 _("bad version - %s\n"), 174 argv[*i]); 175 usage (); 176 } 177 set_version = 1; 178 continue; 179 } 180 if ((fl = get_flag(*p)) == 0) 181 usage(); 182 rf |= fl; 183 rem = 1; 184 } 185 break; 186 case '+': 187 add = 1; 188 for (p = &argv[*i][1]; *p; p++) { 189 if ((fl = get_flag(*p)) == 0) 190 usage(); 191 af |= fl; 192 } 193 break; 194 case '=': 195 set = 1; 196 for (p = &argv[*i][1]; *p; p++) { 197 if ((fl = get_flag(*p)) == 0) 198 usage(); 199 sf |= fl; 200 } 201 break; 202 default: 203 return EOF; 204 break; 205 } 206 return 1; 207 } 208 209 static int chattr_dir_proc(const char *, struct dirent *, void *); 210 211 static int change_attributes(const char * name) 212 { 213 unsigned long flags; 214 STRUCT_STAT st; 215 216 if (LSTAT (name, &st) == -1) { 217 if (!silent) 218 com_err (program_name, errno, 219 _("while trying to stat %s"), name); 220 return -1; 221 } 222 223 if (fgetflags(name, &flags) == -1) { 224 if (!silent) 225 com_err(program_name, errno, 226 _("while reading flags on %s"), name); 227 return -1; 228 } 229 if (set) { 230 if (verbose) { 231 printf (_("Flags of %s set as "), name); 232 print_flags (stdout, sf, 0); 233 printf ("\n"); 234 } 235 if (fsetflags (name, sf) == -1) 236 perror (name); 237 } else { 238 if (rem) 239 flags &= ~rf; 240 if (add) 241 flags |= af; 242 if (verbose) { 243 printf(_("Flags of %s set as "), name); 244 print_flags(stdout, flags, 0); 245 printf("\n"); 246 } 247 if (!S_ISDIR(st.st_mode)) 248 flags &= ~EXT2_DIRSYNC_FL; 249 if (fsetflags(name, flags) == -1) { 250 if (!silent) { 251 com_err(program_name, errno, 252 _("while setting flags on %s"), 253 name); 254 } 255 return -1; 256 } 257 } 258 if (set_version) { 259 if (verbose) 260 printf (_("Version of %s set as %lu\n"), name, version); 261 if (fsetversion (name, version) == -1) { 262 if (!silent) 263 com_err (program_name, errno, 264 _("while setting version on %s"), 265 name); 266 return -1; 267 } 268 } 269 if (set_project) { 270 if (verbose) 271 printf (_("Project of %s set as %lu\n"), name, project); 272 if (fsetproject (name, project) == -1) { 273 if (!silent) 274 com_err (program_name, errno, 275 _("while setting project on %s"), 276 name); 277 return -1; 278 } 279 280 } 281 if (S_ISDIR(st.st_mode) && recursive) 282 return iterate_on_dir (name, chattr_dir_proc, NULL); 283 return 0; 284 } 285 286 static int chattr_dir_proc (const char * dir_name, struct dirent * de, 287 void * private EXT2FS_ATTR((unused))) 288 { 289 int ret = 0; 290 291 if (strcmp (de->d_name, ".") && strcmp (de->d_name, "..")) { 292 char *path; 293 294 path = malloc(strlen (dir_name) + 1 + strlen (de->d_name) + 1); 295 if (!path) { 296 fprintf(stderr, "%s", 297 _("Couldn't allocate path variable " 298 "in chattr_dir_proc")); 299 return -1; 300 } 301 sprintf(path, "%s/%s", dir_name, de->d_name); 302 ret = change_attributes(path); 303 free(path); 304 } 305 return ret; 306 } 307 308 int main (int argc, char ** argv) 309 { 310 int i, j; 311 int end_arg = 0; 312 int err, retval = 0; 313 314 #ifdef ENABLE_NLS 315 setlocale(LC_MESSAGES, ""); 316 setlocale(LC_CTYPE, ""); 317 bindtextdomain(NLS_CAT_NAME, LOCALEDIR); 318 textdomain(NLS_CAT_NAME); 319 set_com_err_gettext(gettext); 320 #endif 321 if (argc && *argv) 322 program_name = *argv; 323 i = 1; 324 while (i < argc && !end_arg) { 325 /* '--' arg should end option processing */ 326 if (strcmp(argv[i], "--") == 0) { 327 i++; 328 end_arg = 1; 329 } else if (decode_arg (&i, argc, argv) == EOF) 330 end_arg = 1; 331 else 332 i++; 333 } 334 if (i >= argc) 335 usage (); 336 if (set && (add || rem)) { 337 fputs(_("= is incompatible with - and +\n"), stderr); 338 exit (1); 339 } 340 if ((rf & af) != 0) { 341 fputs("Can't both set and unset same flag.\n", stderr); 342 exit (1); 343 } 344 if (!(add || rem || set || set_version || set_project )) { 345 fputs(_("Must use '-v', =, - or +\n"), stderr); 346 exit (1); 347 } 348 if (verbose) 349 fprintf (stderr, "chattr %s (%s)\n", 350 E2FSPROGS_VERSION, E2FSPROGS_DATE); 351 for (j = i; j < argc; j++) { 352 err = change_attributes (argv[j]); 353 if (err) 354 retval = 1; 355 } 356 exit(retval); 357 } 358
