applets/busybox.c

   1 /* vi: set sw=4 ts=4: */
   2 #include "internal.h"
   3 #include <stdio.h>
   4 #include <string.h>
   5 #include <errno.h>
   6
   7 static int been_there_done_that = 0;
   8
   9 /* It has been alledged that doing such things can
  10  * help reduce binary size when staticly linking,
  11  * of course with glibc, this is unlikely as long
  12  * as we use things like printf -- perhaps a printf
  13  * replacement may be in order
  14  */
  15 #if 0
  16 void exit(int status) __attribute__ ((noreturn));
  17 void exit(int status)
  18 {
  19         _exit(status);
  20 };
  21 void abort(void) __attribute__ ((__noreturn__));
  22 void abort(void)
  23 {
  24         _exit(0);
  25 };
  26 int atexit(void (*__func) (void))
  27 {
  28         _exit(0);
  29 };
  30 void *__libc_stack_end;
  31 #endif
  32
  33 static const struct Applet applets[] = {
  34
  35 #ifdef BB_BASENAME
  36         {"basename", basename_main, _BB_DIR_USR_BIN},
  37 #endif
  38 #ifdef BB_BUSYBOX
  39         {"busybox", busybox_main, _BB_DIR_BIN},
  40 #endif
  41 #ifdef BB_BLOCK_DEVICE
  42         {"block_device", block_device_main, _BB_DIR_SBIN},
  43 #endif
  44 #ifdef BB_CAT
  45         {"cat", cat_main, _BB_DIR_BIN},
  46 #endif
  47 #ifdef BB_CHMOD_CHOWN_CHGRP
  48         {"chgrp", chmod_chown_chgrp_main, _BB_DIR_BIN},
  49 #endif
  50 #ifdef BB_CHMOD_CHOWN_CHGRP
  51         {"chmod", chmod_chown_chgrp_main, _BB_DIR_BIN},
  52 #endif
  53 #ifdef BB_CHMOD_CHOWN_CHGRP
  54         {"chown", chmod_chown_chgrp_main, _BB_DIR_BIN},
  55 #endif
  56 #ifdef BB_CHROOT
  57         {"chroot", chroot_main, _BB_DIR_SBIN},
  58 #endif
  59 #ifdef BB_CLEAR
  60         {"clear", clear_main, _BB_DIR_USR_BIN},
  61 #endif
  62 #ifdef BB_CHVT
  63         {"chvt", chvt_main, _BB_DIR_USR_BIN},
  64 #endif
  65 #ifdef BB_CP_MV
  66         {"cp", cp_mv_main, _BB_DIR_BIN},
  67 #endif
  68 #ifdef BB_CUT
  69         {"cut", cut_main, _BB_DIR_USR_BIN},
  70 #endif
  71 #ifdef BB_DATE
  72         {"date", date_main, _BB_DIR_BIN},
  73 #endif
  74 #ifdef BB_DD
  75         {"dd", dd_main, _BB_DIR_BIN},
  76 #endif
  77 #ifdef BB_DF
  78         {"df", df_main, _BB_DIR_BIN},
  79 #endif
  80 #ifdef BB_DIRNAME
  81         {"dirname", dirname_main, _BB_DIR_USR_BIN},
  82 #endif
  83 #ifdef BB_DMESG
  84         {"dmesg", dmesg_main, _BB_DIR_BIN},
  85 #endif
  86 #ifdef BB_DU
  87         {"du", du_main, _BB_DIR_BIN},
  88 #endif
  89 #ifdef BB_DUTMP
  90         {"dutmp", dutmp_main, _BB_DIR_USR_SBIN},
  91 #endif
  92 #ifdef BB_ECHO
  93         {"echo", echo_main, _BB_DIR_BIN},
  94 #endif
  95 #ifdef BB_TRUE_FALSE
  96         {"false", false_main, _BB_DIR_BIN},
  97 #endif
  98 #ifdef BB_FBSET
  99         {"fbset", fbset_main, _BB_DIR_USR_SBIN},
 100 #endif
 101 #ifdef BB_FDFLUSH
 102         {"fdflush", fdflush_main, _BB_DIR_BIN},
 103 #endif
 104 #ifdef BB_FIND
 105         {"find", find_main, _BB_DIR_USR_BIN},
 106 #endif
 107 #ifdef BB_FREE
 108         {"free", free_main, _BB_DIR_USR_BIN},
 109 #endif
 110 #ifdef BB_FREERAMDISK
 111         {"freeramdisk", freeramdisk_main, _BB_DIR_SBIN},
 112 #endif
 113 #ifdef BB_DEALLOCVT
 114         {"deallocvt", deallocvt_main, _BB_DIR_USR_BIN},
 115 #endif
 116 #ifdef BB_FSCK_MINIX
 117         {"fsck.minix", fsck_minix_main, _BB_DIR_SBIN},
 118 #endif
 119 #ifdef BB_GREP
 120         {"grep", grep_main, _BB_DIR_BIN},
 121 #endif
 122 #ifdef BB_GUNZIP
 123         {"gunzip", gunzip_main, _BB_DIR_BIN},
 124 #endif
 125 #ifdef BB_GZIP
 126         {"gzip", gzip_main, _BB_DIR_BIN},
 127 #endif
 128 #ifdef BB_HALT
 129         {"halt", halt_main, _BB_DIR_SBIN},
 130 #endif
 131 #ifdef BB_HEAD
 132         {"head", head_main, _BB_DIR_BIN},
 133 #endif
 134 #ifdef BB_HOSTID
 135         {"hostid", hostid_main, _BB_DIR_USR_BIN},
 136 #endif
 137 #ifdef BB_HOSTNAME
 138         {"hostname", hostname_main, _BB_DIR_BIN},
 139 #endif
 140 #ifdef BB_ID
 141         {"id", id_main, _BB_DIR_USR_BIN},
 142 #endif
 143 #ifdef BB_INIT
 144         {"init", init_main, _BB_DIR_SBIN},
 145 #endif
 146 #ifdef BB_INSMOD
 147         {"insmod", insmod_main, _BB_DIR_SBIN},
 148 #endif
 149 #ifdef BB_KILL
 150         {"kill", kill_main, _BB_DIR_BIN},
 151 #endif
 152 #ifdef BB_KILLALL
 153         {"killall", kill_main, _BB_DIR_USR_BIN},
 154 #endif
 155 #ifdef BB_LENGTH
 156         {"length", length_main, _BB_DIR_USR_BIN},
 157 #endif
 158 #ifdef BB_LINUXRC
 159         {"linuxrc", init_main, _BB_DIR_ROOT},
 160 #endif
 161 #ifdef BB_LN
 162         {"ln", ln_main, _BB_DIR_BIN},
 163 #endif
 164 #ifdef BB_LOADACM
 165         {"loadacm", loadacm_main, _BB_DIR_USR_BIN},
 166 #endif
 167 #ifdef BB_LOADFONT
 168         {"loadfont", loadfont_main, _BB_DIR_USR_BIN},
 169 #endif
 170 #ifdef BB_LOADKMAP
 171         {"loadkmap", loadkmap_main, _BB_DIR_SBIN},
 172 #endif
 173 #ifdef BB_LOGGER
 174         {"logger", logger_main, _BB_DIR_USR_BIN},
 175 #endif
 176 #ifdef BB_LOGNAME
 177         {"logname", logname_main, _BB_DIR_USR_BIN},
 178 #endif
 179 #ifdef BB_LS
 180         {"ls", ls_main, _BB_DIR_BIN},
 181 #endif
 182 #ifdef BB_LSMOD
 183         {"lsmod", lsmod_main, _BB_DIR_SBIN},
 184 #endif
 185 #ifdef BB_MAKEDEVS
 186         {"makedevs", makedevs_main, _BB_DIR_SBIN},
 187 #endif
 188 #ifdef BB_MATH
 189         {"math", math_main, _BB_DIR_USR_BIN},
 190 #endif
 191 #ifdef BB_MKDIR
 192         {"mkdir", mkdir_main, _BB_DIR_BIN},
 193 #endif
 194 #ifdef BB_MKFIFO
 195         {"mkfifo", mkfifo_main, _BB_DIR_USR_BIN},
 196 #endif
 197 #ifdef BB_MKFS_MINIX
 198         {"mkfs.minix", mkfs_minix_main, _BB_DIR_SBIN},
 199 #endif
 200 #ifdef BB_MKNOD
 201         {"mknod", mknod_main, _BB_DIR_BIN},
 202 #endif
 203 #ifdef BB_MKSWAP
 204         {"mkswap", mkswap_main, _BB_DIR_SBIN},
 205 #endif
 206 #ifdef BB_MKTEMP
 207         {"mktemp", mktemp_main, _BB_DIR_BIN},
 208 #endif
 209 #ifdef BB_NC
 210         {"nc", nc_main, _BB_DIR_USR_BIN},
 211 #endif
 212 #ifdef BB_MORE
 213         {"more", more_main, _BB_DIR_BIN},
 214 #endif
 215 #ifdef BB_MOUNT
 216         {"mount", mount_main, _BB_DIR_BIN},
 217 #endif
 218 #ifdef BB_MT
 219         {"mt", mt_main, _BB_DIR_BIN},
 220 #endif
 221 #ifdef BB_CP_MV
 222         {"mv", cp_mv_main, _BB_DIR_BIN},
 223 #endif
 224 #ifdef BB_NSLOOKUP
 225         {"nslookup", nslookup_main, _BB_DIR_USR_BIN},
 226 #endif
 227 #ifdef BB_PING
 228         {"ping", ping_main, _BB_DIR_BIN},
 229 #endif
 230 #ifdef BB_POWEROFF
 231         {"poweroff", poweroff_main, _BB_DIR_SBIN},
 232 #endif
 233 #ifdef BB_PRINTF
 234         {"printf", printf_main, _BB_DIR_USR_BIN},
 235 #endif
 236 #ifdef BB_PS
 237         {"ps", ps_main, _BB_DIR_BIN},
 238 #endif
 239 #ifdef BB_PWD
 240         {"pwd", pwd_main, _BB_DIR_BIN},
 241 #endif
 242 #ifdef BB_REBOOT
 243         {"reboot", reboot_main, _BB_DIR_SBIN},
 244 #endif
 245 #ifdef BB_RM
 246         {"rm", rm_main, _BB_DIR_BIN},
 247 #endif
 248 #ifdef BB_RMDIR
 249         {"rmdir", rmdir_main, _BB_DIR_BIN},
 250 #endif
 251 #ifdef BB_RMMOD
 252         {"rmmod", rmmod_main, _BB_DIR_SBIN},
 253 #endif
 254 #ifdef BB_SED
 255         {"sed", sed_main, _BB_DIR_BIN},
 256 #endif
 257 #ifdef BB_SETKEYCODES
 258         {"setkeycodes", setkeycodes_main, _BB_DIR_USR_BIN},
 259 #endif
 260 #ifdef BB_SFDISK
 261         {"sfdisk", sfdisk_main, _BB_DIR_SBIN},
 262 #endif
 263 #ifdef BB_SH
 264         {"sh", shell_main, _BB_DIR_BIN},
 265 #endif
 266 #ifdef BB_SLEEP
 267         {"sleep", sleep_main, _BB_DIR_BIN},
 268 #endif
 269 #ifdef BB_SORT
 270         {"sort", sort_main, _BB_DIR_BIN},
 271 #endif
 272 #ifdef BB_SYNC
 273         {"sync", sync_main, _BB_DIR_BIN},
 274 #endif
 275 #ifdef BB_SYSLOGD
 276         {"syslogd", syslogd_main, _BB_DIR_SBIN},
 277 #endif
 278 #ifdef BB_SWAPONOFF
 279         {"swapon", swap_on_off_main, _BB_DIR_SBIN},
 280 #endif
 281 #ifdef BB_SWAPONOFF
 282         {"swapoff", swap_on_off_main, _BB_DIR_SBIN},
 283 #endif
 284 #ifdef BB_TAIL
 285         {"tail", tail_main, _BB_DIR_USR_BIN},
 286 #endif
 287 #ifdef BB_TAR
 288         {"tar", tar_main, _BB_DIR_BIN},
 289 #endif
 290 #ifdef BB_TELNET
 291         {"telnet", telnet_main, _BB_DIR_USR_BIN},
 292 #endif
 293 #ifdef BB_TEST
 294         {"test", test_main, _BB_DIR_USR_BIN},
 295 #endif
 296 #ifdef BB_TEE
 297         {"tee", tee_main, _BB_DIR_BIN},
 298 #endif
 299 #ifdef BB_TOUCH
 300         {"touch", touch_main, _BB_DIR_USR_BIN},
 301 #endif
 302 #ifdef BB_TR
 303         {"tr", tr_main, _BB_DIR_USR_BIN},
 304 #endif
 305 #ifdef BB_TRUE_FALSE
 306         {"true", true_main, _BB_DIR_BIN},
 307 #endif
 308 #ifdef BB_TTY
 309         {"tty", tty_main, _BB_DIR_USR_BIN},
 310 #endif
 311 #ifdef BB_UMOUNT
 312         {"umount", umount_main, _BB_DIR_BIN},
 313 #endif
 314 #ifdef BB_UNAME
 315         {"uname", uname_main, _BB_DIR_BIN},
 316 #endif
 317 #ifdef BB_UNIQ
 318         {"uniq", uniq_main, _BB_DIR_USR_BIN},
 319 #endif
 320 #ifdef BB_UPDATE
 321         {"update", update_main, _BB_DIR_SBIN},
 322 #endif
 323 #ifdef BB_UPTIME
 324         {"uptime", uptime_main, _BB_DIR_USR_BIN},
 325 #endif
 326 #ifdef BB_USLEEP
 327         {"usleep", usleep_main, _BB_DIR_BIN},
 328 #endif
 329 #ifdef BB_WC
 330         {"wc", wc_main, _BB_DIR_USR_BIN},
 331 #endif
 332 #ifdef BB_WHOAMI
 333         {"whoami", whoami_main, _BB_DIR_USR_BIN},
 334 #endif
 335 #ifdef BB_YES
 336         {"yes", yes_main, _BB_DIR_USR_BIN},
 337 #endif
 338 #ifdef BB_GUNZIP
 339         {"zcat", gunzip_main, _BB_DIR_BIN},
 340 #endif
 341 #ifdef BB_TEST
 342         {"[", test_main, _BB_DIR_USR_BIN},
 343 #endif
 344         {0}
 345 };
 346
 347
 348
 349 int main(int argc, char **argv)
 350 {
 351         char                            *s;
 352         char                            *name;
 353         const struct Applet     *a              = applets;
 354
 355         for (s = name = argv[0]; *s != '\0';) {
 356                 if (*s++ == '/')
 357                         name = s;
 358         }
 359
 360         *argv = name;
 361
 362         while (a->name != 0) {
 363                 if (strcmp(name, a->name) == 0) {
 364                         int status;
 365
 366                         status = ((*(a->main)) (argc, argv));
 367                         if (status < 0) {
 368                                 fprintf(stderr, "%s: %s\n", a->name, strerror(errno));
 369                         }
 370                         fprintf(stderr, "\n");
 371                         exit(status);
 372                 }
 373                 a++;
 374         }
 375         exit(busybox_main(argc, argv));
 376 }
 377
 378
 379 int busybox_main(int argc, char **argv)
 380 {
 381         int col = 0;
 382
 383         argc--;
 384         argv++;
 385
 386         if (been_there_done_that == 1 || argc < 1) {
 387                 const struct Applet *a = applets;
 388
 389                 fprintf(stderr, "BusyBox v%s (%s) multi-call binary -- GPL2\n\n",
 390                                 BB_VER, BB_BT);
 391                 fprintf(stderr, "Usage: busybox [function] [arguments]...\n");
 392                 fprintf(stderr, "   or: [function] [arguments]...\n\n");
 393                 fprintf(stderr,
 394                                 "\tBusyBox is a multi-call binary that combines many common Unix\n"
 395                                 "\tutilities into a single executable.  Most people will create a\n"
 396                                 "\tlink to busybox for each function they wish to use, and BusyBox\n"
 397                                 "\twill act like whatever it was invoked as.\n");
 398                 fprintf(stderr, "\nCurrently defined functions:\n");
 399
 400                 while (a->name != 0) {
 401                         col +=
 402                                 fprintf(stderr, "%s%s", ((col == 0) ? "\t" : ", "),
 403                                                 (a++)->name);
 404                         if (col > 60 && a->name != 0) {
 405                                 fprintf(stderr, ",\n");
 406                                 col = 0;
 407                         }
 408                 }
 409                 fprintf(stderr, "\n\n");
 410                 exit(-1);
 411         } else {
 412                 /* If we've already been here once, exit now */
 413                 been_there_done_that = 1;
 414                 return (main(argc, argv));
 415         }
 416 }
 417
 418 /*
 419 Local Variables:
 420 c-file-style: "linux"
 421 c-basic-offset: 4
 422 tab-width: 4
 423 End:
 424 */