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         {"chmod", chmod_chown_chgrp_main, _BB_DIR_BIN},
  49 #endif
  50 #ifdef BB_CHMOD_CHOWN_CHGRP
  51         {"chown", chmod_chown_chgrp_main, _BB_DIR_BIN},
  52 #endif
  53 #ifdef BB_CHMOD_CHOWN_CHGRP
  54         {"chgrp", 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_CP_MV
  69         {"mv", cp_mv_main, _BB_DIR_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_FBSET
  96         {"fbset", fbset_main, _BB_DIR_USR_SBIN},
  97 #endif
  98 #ifdef BB_FDFLUSH
  99         {"fdflush", fdflush_main, _BB_DIR_BIN},
 100 #endif
 101 #ifdef BB_FIND
 102         {"find", find_main, _BB_DIR_USR_BIN},
 103 #endif
 104 #ifdef BB_FREE
 105         {"free", free_main, _BB_DIR_USR_BIN},
 106 #endif
 107 #ifdef BB_FREERAMDISK
 108         {"freeramdisk", freeramdisk_main, _BB_DIR_SBIN},
 109 #endif
 110 #ifdef BB_DEALLOCVT
 111         {"deallocvt", deallocvt_main, _BB_DIR_USR_BIN},
 112 #endif
 113 #ifdef BB_FSCK_MINIX
 114         {"fsck.minix", fsck_minix_main, _BB_DIR_SBIN},
 115 #endif
 116 #ifdef BB_MKFS_MINIX
 117         {"mkfs.minix", mkfs_minix_main, _BB_DIR_SBIN},
 118 #endif
 119 #ifdef BB_GREP
 120         {"grep", grep_main, _BB_DIR_BIN},
 121 #endif
 122 #ifdef BB_HALT
 123         {"halt", halt_main, _BB_DIR_SBIN},
 124 #endif
 125 #ifdef BB_HEAD
 126         {"head", head_main, _BB_DIR_BIN},
 127 #endif
 128 #ifdef BB_HOSTID
 129         {"hostid", hostid_main, _BB_DIR_USR_BIN},
 130 #endif
 131 #ifdef BB_HOSTNAME
 132         {"hostname", hostname_main, _BB_DIR_BIN},
 133 #endif
 134 #ifdef BB_INIT
 135         {"init", init_main, _BB_DIR_SBIN},
 136 #endif
 137 #ifdef BB_INSMOD
 138         {"insmod", insmod_main, _BB_DIR_SBIN},
 139 #endif
 140 #ifdef BB_FEATURE_LINUXRC               //
 141         {"linuxrc", init_main, _BB_DIR_ROOT},
 142 #endif
 143 #ifdef BB_KILL
 144         {"kill", kill_main, _BB_DIR_BIN},
 145 #endif
 146 #ifdef BB_KILLALL
 147         {"killall", kill_main, _BB_DIR_USR_BIN},
 148 #endif
 149 #ifdef BB_LENGTH
 150         {"length", length_main, _BB_DIR_USR_BIN},
 151 #endif
 152 #ifdef BB_LN
 153         {"ln", ln_main, _BB_DIR_BIN},
 154 #endif
 155 #ifdef BB_LOADACM
 156         {"loadacm", loadacm_main, _BB_DIR_USR_BIN},
 157 #endif
 158 #ifdef BB_LOADFONT
 159         {"loadfont", loadfont_main, _BB_DIR_USR_BIN},
 160 #endif
 161 #ifdef BB_LOADKMAP
 162         {"loadkmap", loadkmap_main, _BB_DIR_SBIN},
 163 #endif
 164 #ifdef BB_LS
 165         {"ls", ls_main, _BB_DIR_BIN},
 166 #endif
 167 #ifdef BB_LSMOD
 168         {"lsmod", lsmod_main, _BB_DIR_SBIN},
 169 #endif
 170 #ifdef BB_MAKEDEVS
 171         {"makedevs", makedevs_main, _BB_DIR_SBIN},
 172 #endif
 173 #ifdef BB_MATH
 174         {"math", math_main, _BB_DIR_USR_BIN},
 175 #endif
 176 #ifdef BB_MKDIR
 177         {"mkdir", mkdir_main, _BB_DIR_BIN},
 178 #endif
 179 #ifdef BB_MKFIFO
 180         {"mkfifo", mkfifo_main, _BB_DIR_USR_BIN},
 181 #endif
 182 #ifdef BB_MKNOD
 183         {"mknod", mknod_main, _BB_DIR_BIN},
 184 #endif
 185 #ifdef BB_MKSWAP
 186         {"mkswap", mkswap_main, _BB_DIR_SBIN},
 187 #endif
 188 #ifdef BB_MNC
 189         {"mnc", mnc_main, _BB_DIR_USR_BIN},
 190 #endif
 191 #ifdef BB_MORE
 192         {"more", more_main, _BB_DIR_BIN},
 193 #endif
 194 #ifdef BB_MOUNT
 195         {"mount", mount_main, _BB_DIR_BIN},
 196 #endif
 197 #ifdef BB_MT
 198         {"mt", mt_main, _BB_DIR_BIN},
 199 #endif
 200 #ifdef BB_NSLOOKUP
 201         {"nslookup", nslookup_main, _BB_DIR_USR_BIN},
 202 #endif
 203 #ifdef BB_PING
 204         {"ping", ping_main, _BB_DIR_BIN},
 205 #endif
 206 #ifdef BB_POWEROFF
 207         {"poweroff", poweroff_main, _BB_DIR_SBIN},
 208 #endif
 209 #ifdef BB_PRINTF
 210         {"printf", printf_main, _BB_DIR_USR_BIN},
 211 #endif
 212 #ifdef BB_PS
 213         {"ps", ps_main, _BB_DIR_BIN},
 214 #endif
 215 #ifdef BB_PWD
 216         {"pwd", pwd_main, _BB_DIR_BIN},
 217 #endif
 218 #ifdef BB_REBOOT
 219         {"reboot", reboot_main, _BB_DIR_SBIN},
 220 #endif
 221 #ifdef BB_RM
 222         {"rm", rm_main, _BB_DIR_BIN},
 223 #endif
 224 #ifdef BB_RMDIR
 225         {"rmdir", rmdir_main, _BB_DIR_BIN},
 226 #endif
 227 #ifdef BB_RMMOD
 228         {"rmmod", rmmod_main, _BB_DIR_SBIN},
 229 #endif
 230 #ifdef BB_SED
 231         {"sed", sed_main, _BB_DIR_BIN},
 232 #endif
 233 #ifdef BB_SH
 234         {"sh", shell_main, _BB_DIR_BIN},
 235 #endif
 236 #ifdef BB_SFDISK
 237         {"sfdisk", sfdisk_main, _BB_DIR_SBIN},
 238 #endif
 239 #ifdef BB_SLEEP
 240         {"sleep", sleep_main, _BB_DIR_BIN},
 241 #endif
 242 #ifdef BB_SORT
 243         {"sort", sort_main, _BB_DIR_BIN},
 244 #endif
 245 #ifdef BB_SYNC
 246         {"sync", sync_main, _BB_DIR_BIN},
 247 #endif
 248 #ifdef BB_SYSLOGD
 249         {"syslogd", syslogd_main, _BB_DIR_SBIN},
 250 #endif
 251 #ifdef BB_LOGGER
 252         {"logger", logger_main, _BB_DIR_USR_BIN},
 253 #endif
 254 #ifdef BB_LOGNAME
 255         {"logname", logname_main, _BB_DIR_USR_BIN},
 256 #endif
 257 #ifdef BB_SWAPONOFF
 258         {"swapon", swap_on_off_main, _BB_DIR_SBIN},
 259 #endif
 260 #ifdef BB_SWAPONOFF
 261         {"swapoff", swap_on_off_main, _BB_DIR_SBIN},
 262 #endif
 263 #ifdef BB_TAIL
 264         {"tail", tail_main, _BB_DIR_USR_BIN},
 265 #endif
 266 #ifdef BB_TAR
 267         {"tar", tar_main, _BB_DIR_BIN},
 268 #endif
 269 #ifdef BB_TELNET
 270         {"telnet", telnet_main, _BB_DIR_USR_BIN},
 271 #endif
 272 #ifdef BB_TEST
 273         {"[", test_main, _BB_DIR_USR_BIN},
 274 #endif
 275 #ifdef BB_TEST
 276         {"test", test_main, _BB_DIR_USR_BIN},
 277 #endif
 278 #ifdef BB_TEE
 279         {"tee", tee_main, _BB_DIR_BIN},
 280 #endif
 281 #ifdef BB_TOUCH
 282         {"touch", touch_main, _BB_DIR_USR_BIN},
 283 #endif
 284 #ifdef BB_TR
 285         {"tr", tr_main, _BB_DIR_USR_BIN},
 286 #endif
 287 #ifdef BB_TRUE_FALSE
 288         {"true", true_main, _BB_DIR_BIN},
 289 #endif
 290 #ifdef BB_TRUE_FALSE
 291         {"false", false_main, _BB_DIR_BIN},
 292 #endif
 293 #ifdef BB_TTY
 294         {"tty", tty_main, _BB_DIR_USR_BIN},
 295 #endif
 296 #ifdef BB_UMOUNT
 297         {"umount", umount_main, _BB_DIR_BIN},
 298 #endif
 299 #ifdef BB_UNAME
 300         {"uname", uname_main, _BB_DIR_BIN},
 301 #endif
 302 #ifdef BB_UPTIME
 303         {"uptime", uptime_main, _BB_DIR_USR_BIN},
 304 #endif
 305 #ifdef BB_UNIQ
 306         {"uniq", uniq_main, _BB_DIR_BIN},
 307 #endif
 308 #ifdef BB_UPDATE
 309         {"update", update_main, _BB_DIR_SBIN},
 310 #endif
 311 #ifdef BB_USLEEP
 312         {"usleep", usleep_main, _BB_DIR_BIN},
 313 #endif
 314 #ifdef BB_WC
 315         {"wc", wc_main, _BB_DIR_USR_BIN},
 316 #endif
 317 #ifdef BB_WHOAMI
 318         {"whoami", whoami_main, _BB_DIR_USR_BIN},
 319 #endif
 320 #ifdef BB_YES
 321         {"yes", yes_main, _BB_DIR_USR_BIN},
 322 #endif
 323 #ifdef BB_GUNZIP
 324         {"zcat", gunzip_main, _BB_DIR_BIN},
 325 #endif
 326 #ifdef BB_GUNZIP
 327         {"gunzip", gunzip_main, _BB_DIR_BIN},
 328 #endif
 329 #ifdef BB_GZIP
 330         {"gzip", gzip_main, _BB_DIR_BIN},
 331 #endif
 332         {0}
 333 };
 334
 335
 336
 337 int main(int argc, char **argv)
 338 {
 339         char                            *s;
 340         char                            *name;
 341         const struct Applet     *a              = applets;
 342
 343         for (s = name = argv[0]; *s != '\0';) {
 344                 if (*s++ == '/')
 345                         name = s;
 346         }
 347
 348         *argv = name;
 349
 350         while (a->name != 0) {
 351                 if (strcmp(name, a->name) == 0) {
 352                         int status;
 353
 354                         status = ((*(a->main)) (argc, argv));
 355                         if (status < 0) {
 356                                 fprintf(stderr, "%s: %s\n", a->name, strerror(errno));
 357                         }
 358                         fprintf(stderr, "\n");
 359                         exit(status);
 360                 }
 361                 a++;
 362         }
 363         exit(busybox_main(argc, argv));
 364 }
 365
 366
 367 int busybox_main(int argc, char **argv)
 368 {
 369         int col = 0;
 370
 371         argc--;
 372         argv++;
 373
 374         if (been_there_done_that == 1 || argc < 1) {
 375                 const struct Applet *a = applets;
 376
 377                 fprintf(stderr, "BusyBox v%s (%s) multi-call binary -- GPL2\n\n",
 378                                 BB_VER, BB_BT);
 379                 fprintf(stderr, "Usage: busybox [function] [arguments]...\n");
 380                 fprintf(stderr, "   or: [function] [arguments]...\n\n");
 381                 fprintf(stderr,
 382                                 "\tBusyBox is a multi-call binary that combines many common Unix utilities into a\n"
 383                                 "\tsingle executable.  Most people will create a link to busybox for each function\n"
 384                                 "\tthey wish to use, and BusyBox will act like whatever it was invoked as.\n");
 385                 fprintf(stderr, "\nCurrently defined functions:\n");
 386
 387                 while (a->name != 0) {
 388                         col +=
 389                                 fprintf(stderr, "%s%s", ((col == 0) ? "\t" : ", "),
 390                                                 (a++)->name);
 391                         if (col > 60 && a->name != 0) {
 392                                 fprintf(stderr, ",\n");
 393                                 col = 0;
 394                         }
 395                 }
 396                 fprintf(stderr, "\n\n");
 397                 exit(-1);
 398         } else {
 399                 /* If we've already been here once, exit now */
 400                 been_there_done_that = 1;
 401                 return (main(argc, argv));
 402         }
 403 }
 404
 405 /*
 406 Local Variables:
 407 c-file-style: "linux"
 408 c-basic-offset: 4
 409 tab-width: 4
 410 End:
 411 */