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