The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 1 | #include <stdio.h> |
| 2 | #include <stdlib.h> |
| 3 | #include <string.h> |
| 4 | #include <sys/types.h> |
| 5 | #include <dirent.h> |
| 6 | #include <errno.h> |
| 7 | |
| 8 | #include <sys/stat.h> |
| 9 | #include <unistd.h> |
| 10 | #include <time.h> |
| 11 | |
| 12 | #include <pwd.h> |
| 13 | #include <grp.h> |
| 14 | |
| 15 | #include <linux/kdev_t.h> |
| 16 | |
| 17 | // bits for flags argument |
Andy McFadden | b33d341 | 2009-04-08 19:25:35 -0700 | [diff] [blame] | 18 | #define LIST_LONG (1 << 0) |
| 19 | #define LIST_ALL (1 << 1) |
| 20 | #define LIST_RECURSIVE (1 << 2) |
| 21 | #define LIST_DIRECTORIES (1 << 3) |
Andy McFadden | 327e696 | 2009-08-18 11:10:03 -0700 | [diff] [blame] | 22 | #define LIST_SIZE (1 << 4) |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 23 | |
| 24 | // fwd |
| 25 | static int listpath(const char *name, int flags); |
| 26 | |
| 27 | static char mode2kind(unsigned mode) |
| 28 | { |
| 29 | switch(mode & S_IFMT){ |
| 30 | case S_IFSOCK: return 's'; |
| 31 | case S_IFLNK: return 'l'; |
| 32 | case S_IFREG: return '-'; |
| 33 | case S_IFDIR: return 'd'; |
| 34 | case S_IFBLK: return 'b'; |
| 35 | case S_IFCHR: return 'c'; |
| 36 | case S_IFIFO: return 'p'; |
| 37 | default: return '?'; |
| 38 | } |
| 39 | } |
| 40 | |
| 41 | static void mode2str(unsigned mode, char *out) |
| 42 | { |
| 43 | *out++ = mode2kind(mode); |
| 44 | |
| 45 | *out++ = (mode & 0400) ? 'r' : '-'; |
| 46 | *out++ = (mode & 0200) ? 'w' : '-'; |
| 47 | if(mode & 04000) { |
| 48 | *out++ = (mode & 0100) ? 's' : 'S'; |
| 49 | } else { |
| 50 | *out++ = (mode & 0100) ? 'x' : '-'; |
| 51 | } |
| 52 | *out++ = (mode & 040) ? 'r' : '-'; |
| 53 | *out++ = (mode & 020) ? 'w' : '-'; |
| 54 | if(mode & 02000) { |
| 55 | *out++ = (mode & 010) ? 's' : 'S'; |
| 56 | } else { |
| 57 | *out++ = (mode & 010) ? 'x' : '-'; |
| 58 | } |
| 59 | *out++ = (mode & 04) ? 'r' : '-'; |
| 60 | *out++ = (mode & 02) ? 'w' : '-'; |
| 61 | if(mode & 01000) { |
| 62 | *out++ = (mode & 01) ? 't' : 'T'; |
| 63 | } else { |
| 64 | *out++ = (mode & 01) ? 'x' : '-'; |
| 65 | } |
| 66 | *out = 0; |
| 67 | } |
| 68 | |
| 69 | static void user2str(unsigned uid, char *out) |
| 70 | { |
| 71 | struct passwd *pw = getpwuid(uid); |
| 72 | if(pw) { |
| 73 | strcpy(out, pw->pw_name); |
| 74 | } else { |
| 75 | sprintf(out, "%d", uid); |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | static void group2str(unsigned gid, char *out) |
| 80 | { |
| 81 | struct group *gr = getgrgid(gid); |
| 82 | if(gr) { |
| 83 | strcpy(out, gr->gr_name); |
| 84 | } else { |
| 85 | sprintf(out, "%d", gid); |
| 86 | } |
| 87 | } |
| 88 | |
Andy McFadden | 327e696 | 2009-08-18 11:10:03 -0700 | [diff] [blame] | 89 | static int listfile_size(const char *path, int flags) |
| 90 | { |
| 91 | struct stat s; |
| 92 | |
| 93 | if (lstat(path, &s) < 0) |
| 94 | return -1; |
| 95 | |
| 96 | /* blocks are 512 bytes, we want output to be KB */ |
| 97 | printf("%lld %s\n", s.st_blocks / 2, path); |
| 98 | return 0; |
| 99 | } |
| 100 | |
| 101 | static int listfile_long(const char *path, int flags) |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 102 | { |
| 103 | struct stat s; |
| 104 | char date[32]; |
| 105 | char mode[16]; |
| 106 | char user[16]; |
| 107 | char group[16]; |
| 108 | const char *name; |
| 109 | |
| 110 | /* name is anything after the final '/', or the whole path if none*/ |
| 111 | name = strrchr(path, '/'); |
| 112 | if(name == 0) { |
| 113 | name = path; |
| 114 | } else { |
| 115 | name++; |
| 116 | } |
| 117 | |
| 118 | if(lstat(path, &s) < 0) { |
| 119 | return -1; |
| 120 | } |
| 121 | |
| 122 | mode2str(s.st_mode, mode); |
| 123 | user2str(s.st_uid, user); |
| 124 | group2str(s.st_gid, group); |
| 125 | |
| 126 | strftime(date, 32, "%Y-%m-%d %H:%M", localtime((const time_t*)&s.st_mtime)); |
| 127 | date[31] = 0; |
| 128 | |
| 129 | // 12345678901234567890123456789012345678901234567890123456789012345678901234567890 |
| 130 | // MMMMMMMM UUUUUUUU GGGGGGGGG XXXXXXXX YYYY-MM-DD HH:MM NAME (->LINK) |
| 131 | |
| 132 | switch(s.st_mode & S_IFMT) { |
| 133 | case S_IFBLK: |
| 134 | case S_IFCHR: |
| 135 | printf("%s %-8s %-8s %3d, %3d %s %s\n", |
| 136 | mode, user, group, |
| 137 | (int) MAJOR(s.st_rdev), (int) MINOR(s.st_rdev), |
| 138 | date, name); |
| 139 | break; |
| 140 | case S_IFREG: |
| 141 | printf("%s %-8s %-8s %8d %s %s\n", |
| 142 | mode, user, group, (int) s.st_size, date, name); |
| 143 | break; |
| 144 | case S_IFLNK: { |
| 145 | char linkto[256]; |
| 146 | int len; |
| 147 | |
| 148 | len = readlink(path, linkto, 256); |
| 149 | if(len < 0) return -1; |
| 150 | |
| 151 | if(len > 255) { |
| 152 | linkto[252] = '.'; |
| 153 | linkto[253] = '.'; |
| 154 | linkto[254] = '.'; |
| 155 | linkto[255] = 0; |
| 156 | } else { |
| 157 | linkto[len] = 0; |
| 158 | } |
| 159 | |
| 160 | printf("%s %-8s %-8s %s %s -> %s\n", |
| 161 | mode, user, group, date, name, linkto); |
| 162 | break; |
| 163 | } |
| 164 | default: |
| 165 | printf("%s %-8s %-8s %s %s\n", |
| 166 | mode, user, group, date, name); |
| 167 | |
| 168 | } |
| 169 | return 0; |
| 170 | } |
| 171 | |
Andy McFadden | 327e696 | 2009-08-18 11:10:03 -0700 | [diff] [blame] | 172 | static int listfile(const char *dirname, const char *filename, int flags) |
| 173 | { |
| 174 | if ((flags & (LIST_LONG | LIST_SIZE)) == 0) { |
| 175 | printf("%s\n", filename); |
| 176 | return 0; |
| 177 | } |
| 178 | |
| 179 | char tmp[4096]; |
| 180 | const char* pathname = filename; |
| 181 | |
| 182 | if (dirname != NULL) { |
| 183 | snprintf(tmp, sizeof(tmp), "%s/%s", dirname, filename); |
| 184 | pathname = tmp; |
| 185 | } else { |
| 186 | pathname = filename; |
| 187 | } |
| 188 | |
| 189 | if ((flags & LIST_LONG) != 0) { |
| 190 | return listfile_long(pathname, flags); |
| 191 | } else /*((flags & LIST_SIZE) != 0)*/ { |
| 192 | return listfile_size(pathname, flags); |
| 193 | } |
| 194 | } |
| 195 | |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 196 | static int listdir(const char *name, int flags) |
| 197 | { |
| 198 | char tmp[4096]; |
| 199 | DIR *d; |
| 200 | struct dirent *de; |
| 201 | |
| 202 | d = opendir(name); |
| 203 | if(d == 0) { |
| 204 | fprintf(stderr, "opendir failed, %s\n", strerror(errno)); |
| 205 | return -1; |
| 206 | } |
| 207 | |
| 208 | while((de = readdir(d)) != 0){ |
| 209 | if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) continue; |
| 210 | if(de->d_name[0] == '.' && (flags & LIST_ALL) == 0) continue; |
Andy McFadden | 327e696 | 2009-08-18 11:10:03 -0700 | [diff] [blame] | 211 | |
| 212 | listfile(name, de->d_name, flags); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 213 | } |
| 214 | |
| 215 | if (flags & LIST_RECURSIVE) { |
| 216 | rewinddir(d); |
| 217 | |
| 218 | while ((de = readdir(d)) != 0) { |
| 219 | struct stat s; |
| 220 | int err; |
| 221 | |
| 222 | if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) |
| 223 | continue; |
| 224 | if (de->d_name[0] == '.' && (flags & LIST_ALL) == 0) |
| 225 | continue; |
| 226 | |
Andy McFadden | 327e696 | 2009-08-18 11:10:03 -0700 | [diff] [blame] | 227 | if (!strcmp(name, "/")) |
| 228 | snprintf(tmp, sizeof(tmp), "/%s", de->d_name); |
| 229 | else |
| 230 | snprintf(tmp, sizeof(tmp), "%s/%s", name, de->d_name); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 231 | |
| 232 | /* |
| 233 | * If the name ends in a '/', use stat() so we treat it like a |
| 234 | * directory even if it's a symlink. |
| 235 | */ |
| 236 | if (tmp[strlen(tmp)-1] == '/') |
| 237 | err = stat(tmp, &s); |
| 238 | else |
| 239 | err = lstat(tmp, &s); |
| 240 | |
| 241 | if (err < 0) { |
| 242 | perror(tmp); |
| 243 | closedir(d); |
| 244 | return -1; |
| 245 | } |
| 246 | |
| 247 | if (S_ISDIR(s.st_mode)) { |
| 248 | printf("\n%s:\n", tmp); |
| 249 | listdir(tmp, flags); |
| 250 | } |
| 251 | } |
| 252 | } |
| 253 | |
| 254 | closedir(d); |
| 255 | return 0; |
| 256 | } |
| 257 | |
| 258 | static int listpath(const char *name, int flags) |
| 259 | { |
| 260 | struct stat s; |
| 261 | int err; |
| 262 | |
| 263 | /* |
| 264 | * If the name ends in a '/', use stat() so we treat it like a |
| 265 | * directory even if it's a symlink. |
| 266 | */ |
| 267 | if (name[strlen(name)-1] == '/') |
| 268 | err = stat(name, &s); |
| 269 | else |
| 270 | err = lstat(name, &s); |
| 271 | |
| 272 | if (err < 0) { |
| 273 | perror(name); |
| 274 | return -1; |
| 275 | } |
| 276 | |
Andy McFadden | b33d341 | 2009-04-08 19:25:35 -0700 | [diff] [blame] | 277 | if ((flags & LIST_DIRECTORIES) == 0 && S_ISDIR(s.st_mode)) { |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 278 | if (flags & LIST_RECURSIVE) |
| 279 | printf("\n%s:\n", name); |
| 280 | return listdir(name, flags); |
| 281 | } else { |
Andy McFadden | 327e696 | 2009-08-18 11:10:03 -0700 | [diff] [blame] | 282 | /* yeah this calls stat() again*/ |
| 283 | return listfile(NULL, name, flags); |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 284 | } |
| 285 | } |
| 286 | |
| 287 | int ls_main(int argc, char **argv) |
| 288 | { |
| 289 | int flags = 0; |
| 290 | int listed = 0; |
| 291 | |
| 292 | if(argc > 1) { |
| 293 | int i; |
| 294 | int err = 0; |
| 295 | |
| 296 | for (i = 1; i < argc; i++) { |
Andy McFadden | 327e696 | 2009-08-18 11:10:03 -0700 | [diff] [blame] | 297 | if (!strcmp(argv[i], "-l")) { |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 298 | flags |= LIST_LONG; |
Andy McFadden | 327e696 | 2009-08-18 11:10:03 -0700 | [diff] [blame] | 299 | } else if (!strcmp(argv[i], "-s")) { |
| 300 | flags |= LIST_SIZE; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 301 | } else if (!strcmp(argv[i], "-a")) { |
| 302 | flags |= LIST_ALL; |
| 303 | } else if (!strcmp(argv[i], "-R")) { |
| 304 | flags |= LIST_RECURSIVE; |
Andy McFadden | b33d341 | 2009-04-08 19:25:35 -0700 | [diff] [blame] | 305 | } else if (!strcmp(argv[i], "-d")) { |
| 306 | flags |= LIST_DIRECTORIES; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 307 | } else { |
| 308 | listed++; |
| 309 | if(listpath(argv[i], flags) != 0) { |
| 310 | err = EXIT_FAILURE; |
| 311 | } |
| 312 | } |
| 313 | } |
| 314 | |
| 315 | if (listed > 0) return err; |
| 316 | } |
| 317 | |
| 318 | // list working directory if no files or directories were specified |
| 319 | return listpath(".", flags); |
| 320 | } |