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 #define bb_need_full_version
   8 #define BB_DECLARE_EXTERN
   9 #include "messages.c"
  10
  11 static int been_there_done_that = 0;
  12
  13 const struct BB_applet applets[] = {
  14
  15 #ifdef BB_AR
  16         {"ar", ar_main, _BB_DIR_USR_BIN, ar_usage},
  17 #endif
  18 #ifdef BB_BASENAME
  19         {"basename", basename_main, _BB_DIR_USR_BIN, basename_usage},
  20 #endif
  21         {"busybox", busybox_main, _BB_DIR_BIN, NULL},
  22 #ifdef BB_CAT
  23         {"cat", cat_main, _BB_DIR_BIN, cat_usage},
  24 #endif
  25 #ifdef BB_CHMOD_CHOWN_CHGRP
  26         {"chgrp", chmod_chown_chgrp_main, _BB_DIR_BIN, chgrp_usage},
  27 #endif
  28 #ifdef BB_CHMOD_CHOWN_CHGRP
  29         {"chmod", chmod_chown_chgrp_main, _BB_DIR_BIN, chmod_usage},
  30 #endif
  31 #ifdef BB_CHMOD_CHOWN_CHGRP
  32         {"chown", chmod_chown_chgrp_main, _BB_DIR_BIN, chown_usage},
  33 #endif
  34 #ifdef BB_CHROOT
  35         {"chroot", chroot_main, _BB_DIR_USR_SBIN, chroot_usage},
  36 #endif
  37 #ifdef BB_CLEAR
  38         {"clear", clear_main, _BB_DIR_USR_BIN, clear_usage},
  39 #endif
  40 #ifdef BB_CHVT
  41         {"chvt", chvt_main, _BB_DIR_USR_BIN, chvt_usage},
  42 #endif
  43 #ifdef BB_CP_MV
  44         {"cp", cp_mv_main, _BB_DIR_BIN, cp_usage},
  45 #endif
  46 #ifdef BB_CUT
  47         {"cut", cut_main, _BB_DIR_USR_BIN, cut_usage},
  48 #endif
  49 #ifdef BB_DATE
  50         {"date", date_main, _BB_DIR_BIN, date_usage},
  51 #endif
  52 #ifdef BB_DC
  53         {"dc", dc_main, _BB_DIR_USR_BIN, dc_usage},
  54 #endif
  55 #ifdef BB_DD
  56         {"dd", dd_main, _BB_DIR_BIN, dd_usage},
  57 #endif
  58 #ifdef BB_DF
  59         {"df", df_main, _BB_DIR_BIN, df_usage},
  60 #endif
  61 #ifdef BB_DIRNAME
  62         {"dirname", dirname_main, _BB_DIR_USR_BIN, dirname_usage},
  63 #endif
  64 #ifdef BB_DMESG
  65         {"dmesg", dmesg_main, _BB_DIR_BIN, dmesg_usage},
  66 #endif
  67 #ifdef BB_DU
  68         {"du", du_main, _BB_DIR_USR_BIN, du_usage},
  69 #endif
  70 #ifdef BB_DUMPKMAP
  71         {"dumpkmap", dumpkmap_main, _BB_DIR_BIN, dumpkmap_usage},
  72 #endif
  73 #ifdef BB_DUTMP
  74         {"dutmp", dutmp_main, _BB_DIR_USR_SBIN, dutmp_usage},
  75 #endif
  76 #ifdef BB_ECHO
  77         {"echo", echo_main, _BB_DIR_BIN, echo_usage},
  78 #endif
  79 #ifdef BB_TRUE_FALSE
  80         {"false", false_main, _BB_DIR_BIN, false_usage},
  81 #endif
  82 #ifdef BB_FBSET
  83         {"fbset", fbset_main, _BB_DIR_USR_SBIN, NULL},
  84 #endif
  85 #ifdef BB_FDFLUSH
  86         {"fdflush", fdflush_main, _BB_DIR_BIN, fdflush_usage},
  87 #endif
  88 #ifdef BB_FIND
  89         {"find", find_main, _BB_DIR_USR_BIN, find_usage},
  90 #endif
  91 #ifdef BB_FREE
  92         {"free", free_main, _BB_DIR_USR_BIN, free_usage},
  93 #endif
  94 #ifdef BB_FREERAMDISK
  95         {"freeramdisk", freeramdisk_main, _BB_DIR_SBIN, freeramdisk_usage},
  96 #endif
  97 #ifdef BB_DEALLOCVT
  98         {"deallocvt", deallocvt_main, _BB_DIR_USR_BIN, deallocvt_usage},
  99 #endif
 100 #ifdef BB_FSCK_MINIX
 101         {"fsck.minix", fsck_minix_main, _BB_DIR_SBIN, fsck_minix_usage},
 102 #endif
 103 #ifdef BB_GREP
 104         {"grep", grep_main, _BB_DIR_BIN, grep_usage},
 105 #endif
 106 #ifdef BB_GUNZIP
 107         {"gunzip", gunzip_main, _BB_DIR_BIN, gunzip_usage},
 108 #endif
 109 #ifdef BB_GZIP
 110         {"gzip", gzip_main, _BB_DIR_BIN, gzip_usage},
 111 #endif
 112 #ifdef BB_HALT
 113         {"halt", halt_main, _BB_DIR_SBIN, halt_usage},
 114 #endif
 115 #ifdef BB_HEAD
 116         {"head", head_main, _BB_DIR_USR_BIN, head_usage},
 117 #endif
 118 #ifdef BB_HOSTID
 119         {"hostid", hostid_main, _BB_DIR_USR_BIN, hostid_usage},
 120 #endif
 121 #ifdef BB_HOSTNAME
 122         {"hostname", hostname_main, _BB_DIR_BIN, hostname_usage},
 123 #endif
 124 #ifdef BB_ID
 125         {"id", id_main, _BB_DIR_USR_BIN, id_usage},
 126 #endif
 127 #ifdef BB_INIT
 128         {"init", init_main, _BB_DIR_SBIN, NULL},
 129 #endif
 130 #ifdef BB_INSMOD
 131         {"insmod", insmod_main, _BB_DIR_SBIN, insmod_usage},
 132 #endif
 133 #ifdef BB_KILL
 134         {"kill", kill_main, _BB_DIR_BIN, kill_usage},
 135 #endif
 136 #ifdef BB_KILLALL
 137         {"killall", kill_main, _BB_DIR_USR_BIN, kill_usage},
 138 #endif
 139 #ifdef BB_LENGTH
 140         {"length", length_main, _BB_DIR_USR_BIN, length_usage},
 141 #endif
 142 #ifdef BB_LINUXRC
 143         {"linuxrc", init_main, _BB_DIR_ROOT, init_usage},
 144 #endif
 145 #ifdef BB_LN
 146         {"ln", ln_main, _BB_DIR_BIN, ln_usage},
 147 #endif
 148 #ifdef BB_LOADACM
 149         {"loadacm", loadacm_main, _BB_DIR_USR_BIN, loadacm_usage},
 150 #endif
 151 #ifdef BB_LOADFONT
 152         {"loadfont", loadfont_main, _BB_DIR_USR_BIN, loadfont_usage},
 153 #endif
 154 #ifdef BB_LOADKMAP
 155         {"loadkmap", loadkmap_main, _BB_DIR_SBIN, loadkmap_usage},
 156 #endif
 157 #ifdef BB_LOGGER
 158         {"logger", logger_main, _BB_DIR_USR_BIN, logger_usage},
 159 #endif
 160 #ifdef BB_LOGNAME
 161         {"logname", logname_main, _BB_DIR_USR_BIN, logname_usage},
 162 #endif
 163 #ifdef BB_LS
 164         {"ls", ls_main, _BB_DIR_BIN, ls_usage},
 165 #endif
 166 #ifdef BB_LSMOD
 167         {"lsmod", lsmod_main, _BB_DIR_SBIN, lsmod_usage},
 168 #endif
 169 #ifdef BB_MAKEDEVS
 170         {"makedevs", makedevs_main, _BB_DIR_SBIN, makedevs_usage},
 171 #endif
 172 #ifdef BB_MD5SUM
 173         {"md5sum", md5sum_main, _BB_DIR_USR_BIN, md5sum_usage},
 174 #endif
 175 #ifdef BB_MKDIR
 176         {"mkdir", mkdir_main, _BB_DIR_BIN, mkdir_usage},
 177 #endif
 178 #ifdef BB_MKFIFO
 179         {"mkfifo", mkfifo_main, _BB_DIR_USR_BIN, mkfifo_usage},
 180 #endif
 181 #ifdef BB_MKFS_MINIX
 182         {"mkfs.minix", mkfs_minix_main, _BB_DIR_SBIN, mkfs_minix_usage},
 183 #endif
 184 #ifdef BB_MKNOD
 185         {"mknod", mknod_main, _BB_DIR_BIN, mknod_usage},
 186 #endif
 187 #ifdef BB_MKSWAP
 188         {"mkswap", mkswap_main, _BB_DIR_SBIN, mkswap_usage},
 189 #endif
 190 #ifdef BB_MKTEMP
 191         {"mktemp", mktemp_main, _BB_DIR_BIN, mktemp_usage},
 192 #endif
 193 #ifdef BB_NC
 194         {"nc", nc_main, _BB_DIR_USR_BIN, nc_usage},
 195 #endif
 196 #ifdef BB_MORE
 197         {"more", more_main, _BB_DIR_BIN, more_usage},
 198 #endif
 199 #ifdef BB_MOUNT
 200         {"mount", mount_main, _BB_DIR_BIN, mount_usage},
 201 #endif
 202 #ifdef BB_MT
 203         {"mt", mt_main, _BB_DIR_BIN, mt_usage},
 204 #endif
 205 #ifdef BB_CP_MV
 206         {"mv", cp_mv_main, _BB_DIR_BIN, mv_usage},
 207 #endif
 208 #ifdef BB_NSLOOKUP
 209         {"nslookup", nslookup_main, _BB_DIR_USR_BIN, nslookup_usage},
 210 #endif
 211 #ifdef BB_PING
 212         {"ping", ping_main, _BB_DIR_BIN, ping_usage},
 213 #endif
 214 #ifdef BB_POWEROFF
 215         {"poweroff", poweroff_main, _BB_DIR_SBIN, poweroff_usage},
 216 #endif
 217 #ifdef BB_PRINTF
 218         {"printf", printf_main, _BB_DIR_USR_BIN, printf_usage},
 219 #endif
 220 #ifdef BB_PS
 221         {"ps", ps_main, _BB_DIR_BIN, ps_usage},
 222 #endif
 223 #ifdef BB_PWD
 224         {"pwd", pwd_main, _BB_DIR_BIN, pwd_usage},
 225 #endif
 226 #ifdef BB_REBOOT
 227         {"reboot", reboot_main, _BB_DIR_SBIN, reboot_usage},
 228 #endif
 229 #ifdef BB_RENICE
 230         {"renice", renice_main, _BB_DIR_USR_BIN},
 231 #endif
 232 #ifdef BB_RESET
 233         {"reset", reset_main, _BB_DIR_USR_BIN, reset_usage},
 234 #endif
 235 #ifdef BB_RM
 236         {"rm", rm_main, _BB_DIR_BIN, rm_usage},
 237 #endif
 238 #ifdef BB_RMDIR
 239         {"rmdir", rmdir_main, _BB_DIR_BIN, rmdir_usage},
 240 #endif
 241 #ifdef BB_RMMOD
 242         {"rmmod", rmmod_main, _BB_DIR_SBIN, rmmod_usage},
 243 #endif
 244 #ifdef BB_SED
 245         {"sed", sed_main, _BB_DIR_BIN, sed_usage},
 246 #endif
 247 #ifdef BB_SETKEYCODES
 248         {"setkeycodes", setkeycodes_main, _BB_DIR_USR_BIN, setkeycodes_usage},
 249 #endif
 250 #ifdef BB_SH
 251         {"sh", shell_main, _BB_DIR_BIN, shell_usage},
 252 #endif
 253 #ifdef BB_SLEEP
 254         {"sleep", sleep_main, _BB_DIR_BIN, sleep_usage},
 255 #endif
 256 #ifdef BB_SORT
 257         {"sort", sort_main, _BB_DIR_USR_BIN, sort_usage},
 258 #endif
 259 #ifdef BB_SYNC
 260         {"sync", sync_main, _BB_DIR_BIN, sync_usage},
 261 #endif
 262 #ifdef BB_SYSLOGD
 263         {"syslogd", syslogd_main, _BB_DIR_SBIN, syslogd_usage},
 264 #endif
 265 #ifdef BB_SWAPONOFF
 266         {"swapon", swap_on_off_main, _BB_DIR_SBIN, swapon_usage},
 267 #endif
 268 #ifdef BB_SWAPONOFF
 269         {"swapoff", swap_on_off_main, _BB_DIR_SBIN, swapoff_usage},
 270 #endif
 271 #ifdef BB_TAIL
 272         {"tail", tail_main, _BB_DIR_USR_BIN, tail_usage},
 273 #endif
 274 #ifdef BB_TAR
 275         {"tar", tar_main, _BB_DIR_BIN, tar_usage},
 276 #endif
 277 #ifdef BB_TELNET
 278         {"telnet", telnet_main, _BB_DIR_USR_BIN, telnet_usage},
 279 #endif
 280 #ifdef BB_TEST
 281         {"test", test_main, _BB_DIR_USR_BIN, test_usage},
 282 #endif
 283 #ifdef BB_TEE
 284         {"tee", tee_main, _BB_DIR_USR_BIN, tee_usage},
 285 #endif
 286 #ifdef BB_TOUCH
 287         {"touch", touch_main, _BB_DIR_BIN, touch_usage},
 288 #endif
 289 #ifdef BB_TR
 290         {"tr", tr_main, _BB_DIR_USR_BIN, tr_usage},
 291 #endif
 292 #ifdef BB_TRUE_FALSE
 293         {"true", true_main, _BB_DIR_BIN, true_usage},
 294 #endif
 295 #ifdef BB_TTY
 296         {"tty", tty_main, _BB_DIR_USR_BIN, tty_usage},
 297 #endif
 298 #ifdef BB_UMOUNT
 299         {"umount", umount_main, _BB_DIR_BIN, umount_usage},
 300 #endif
 301 #ifdef BB_UNAME
 302         {"uname", uname_main, _BB_DIR_BIN, uname_usage},
 303 #endif
 304 #ifdef BB_UNIQ
 305         {"uniq", uniq_main, _BB_DIR_USR_BIN, uniq_usage},
 306 #endif
 307 #ifdef BB_UPDATE
 308         {"update", update_main, _BB_DIR_SBIN, update_usage},
 309 #endif
 310 #ifdef BB_UPTIME
 311         {"uptime", uptime_main, _BB_DIR_USR_BIN, uptime_usage},
 312 #endif
 313 #ifdef BB_UUENCODE
 314         {"uuencode", uuencode_main, _BB_DIR_USR_BIN, uuencode_usage},
 315 #endif
 316 #ifdef BB_UUDECODE
 317         {"uudecode", uudecode_main, _BB_DIR_USR_BIN, uudecode_usage},
 318 #endif
 319 #ifdef BB_USLEEP
 320         {"usleep", usleep_main, _BB_DIR_BIN, usleep_usage},
 321 #endif
 322 #ifdef BB_WC
 323         {"wc", wc_main, _BB_DIR_USR_BIN, wc_usage},
 324 #endif
 325 #ifdef BB_WHICH
 326         {"which", which_main, _BB_DIR_USR_BIN, which_usage},
 327 #endif
 328 #ifdef BB_WHOAMI
 329         {"whoami", whoami_main, _BB_DIR_USR_BIN, whoami_usage},
 330 #endif
 331 #ifdef BB_YES
 332         {"yes", yes_main, _BB_DIR_USR_BIN, yes_usage},
 333 #endif
 334 #ifdef BB_GUNZIP
 335         {"zcat", gunzip_main, _BB_DIR_BIN, gunzip_usage},
 336 #endif
 337 #ifdef BB_TEST
 338         {"[", test_main, _BB_DIR_USR_BIN, test_usage},
 339 #endif
 340         {0,NULL,0,NULL}
 341 };
 342
 343 const char *applet_name;
 344
 345 #ifdef BB_FEATURE_INSTALLER
 346 /*
 347  * directory table
 348  *              this should be consistent w/ the enum, internal.h::Location,
 349  *              or else...
 350  */
 351 static char* install_dir[] = {
 352         "/",
 353         "/bin",
 354         "/sbin",
 355         "/usr/bin",
 356         "/usr/sbin",
 357 };
 358
 359 /* abstract link() */
 360 typedef int (*__link_f)(const char *, const char *);
 361
 362 /*
 363  * Where in the filesystem is this busybox?
 364  * [return]
 365  *              malloc'd string w/ full pathname of busybox's location
 366  *              NULL on failure
 367  */
 368 static char *busybox_fullpath()
 369 {
 370         pid_t pid;
 371         char path[256];
 372         char proc[256];
 373         int len;
 374
 375         pid = getpid();
 376         sprintf(proc, "/proc/%d/exe", pid);
 377         len = readlink(proc, path, 256);
 378         if (len != -1) {
 379                 path[len] = 0;
 380         } else {
 381                 errorMsg("%s: %s\n", proc, strerror(errno));
 382                 return NULL;
 383         }
 384         return strdup(path);
 385 }
 386
 387 /* create (sym)links for each applet */
 388 static int install_links(const char *busybox, int use_symbolic_links)
 389 {
 390         __link_f Link = link;
 391
 392         char command[256];
 393         int i;
 394         int rc = 0;
 395
 396         if (use_symbolic_links) Link = symlink;
 397
 398         for (i = 0; applets[i].name != NULL; i++) {
 399                 sprintf (
 400                         command,
 401                         "%s/%s",
 402                         install_dir[applets[i].location],
 403                         applets[i].name
 404                 );
 405 #if 1
 406                 rc |= Link(busybox, command);
 407 #else
 408                 puts(command);
 409 #endif
 410                 if (rc) {
 411                         errorMsg("%s: %s\n", command, strerror(errno));
 412                 }
 413         }
 414         return rc;
 415 }
 416
 417 #endif /* BB_FEATURE_INSTALLER */
 418
 419
 420 int main(int argc, char **argv)
 421 {
 422         const char                              *s;
 423         const struct BB_applet  *a              = applets;
 424         applet_name = "busybox";
 425
 426 #ifdef BB_FEATURE_INSTALLER
 427         /*
 428          * This style of argument parsing doesn't scale well
 429          * in the event that busybox starts wanting more --options.
 430          * If someone has a cleaner approach, by all means implement it.
 431          */
 432         if (argc > 1 && (strcmp(argv[1], "--install") == 0)) {
 433                 int use_symbolic_links = 0;
 434                 int rc = 0;
 435                 char *busybox;
 436
 437                 /* to use symlinks, or not to use symlinks... */
 438                 if (argc > 2) {
 439                         if ((strcmp(argv[2], "-s") == 0)) {
 440                                 use_symbolic_links = 1;
 441                         }
 442                 }
 443
 444                 /* link */
 445                 busybox = busybox_fullpath();
 446                 if (busybox) {
 447                         install_links(busybox, use_symbolic_links);
 448                         free(busybox);
 449                 } else {
 450                         rc = 1;
 451                 }
 452                 return rc;
 453         }
 454 #endif /* BB_FEATURE_INSTALLER */
 455
 456         for (s = applet_name = argv[0]; *s != '\0';) {
 457                 if (*s++ == '/')
 458                         applet_name = s;
 459         }
 460
 461         *argv = (char*)applet_name;
 462
 463 #ifdef BB_SH
 464         /* Add in a special case hack -- whenever **argv == '-'
 465          * (i.e. '-su' or '-sh') always invoke the shell */
 466         if (**argv == '-' && *(*argv+1)!= '-') {
 467                 exit(((*(shell_main)) (argc, argv)));
 468         }
 469 #endif
 470
 471         while (a->name != 0) {
 472                 if (strcmp(applet_name, a->name) == 0) {
 473                         if (a->usage && argv[1] && strcmp(argv[1], "--help") == 0)
 474                                 usage(a->usage);
 475                         exit(((*(a->main)) (argc, argv)));
 476                 }
 477                 a++;
 478         }
 479         return(busybox_main(argc, argv));
 480 }
 481
 482
 483 int busybox_main(int argc, char **argv)
 484 {
 485         int col = 0;
 486
 487         argc--;
 488         argv++;
 489
 490         if (been_there_done_that == 1 || argc < 1) {
 491                 const struct BB_applet *a = applets;
 492
 493                 fprintf(stderr, "%s\n\n"
 494                                 "Usage: busybox [function] [arguments]...\n"
 495                                 "   or: [function] [arguments]...\n\n"
 496                                 "\tBusyBox is a multi-call binary that combines many common Unix\n"
 497                                 "\tutilities into a single executable.  Most people will create a\n"
 498                                 "\tlink to busybox for each function they wish to use, and BusyBox\n"
 499                                 "\twill act like whatever it was invoked as.\n"
 500                                 "\nCurrently defined functions:\n", full_version);
 501
 502                 while (a->name != 0) {
 503                         col +=
 504                                 fprintf(stderr, "%s%s", ((col == 0) ? "\t" : ", "),
 505                                                 (a++)->name);
 506                         if (col > 60 && a->name != 0) {
 507                                 fprintf(stderr, ",\n");
 508                                 col = 0;
 509                         }
 510                 }
 511                 fprintf(stderr, "\n\n");
 512                 exit(-1);
 513         }
 514         /* If we've already been here once, exit now */
 515         been_there_done_that = 1;
 516         return (main(argc, argv));
 517 }
 518
 519 /*
 520 Local Variables:
 521 c-file-style: "linux"
 522 c-basic-offset: 4
 523 tab-width: 4
 524 End:
 525 */