busybox.c

   1 #include "internal.h"
   2 #include <stdio.h>
   3 #include <string.h>
   4 #include <errno.h>
   5
   6 static int been_there_done_that = 0;
   7
   8 static const struct Applet applets[] = {
   9
  10 #ifdef BB_BUSYBOX               //bin
  11     {"busybox", busybox_main},
  12 #endif
  13 #ifdef BB_BLOCK_DEVICE          //sbin
  14     {"block_device", block_device_main},
  15 #endif
  16 #ifdef BB_CAT                   //bin
  17     {"cat", cat_main},
  18 #endif
  19 #ifdef BB_CHMOD_CHOWN_CHGRP     //bin
  20     {"chmod", chmod_chown_chgrp_main},
  21     {"chown", chmod_chown_chgrp_main},
  22     {"chgrp", chmod_chown_chgrp_main},
  23 #endif
  24 #ifdef BB_CHROOT                //sbin
  25     {"chroot", chroot_main},
  26 #endif
  27 #ifdef BB_CLEAR                 //usr/bin
  28     {"clear", clear_main},
  29 #endif
  30 #ifdef BB_CHVT                  //usr/bin
  31     {"chvt", chvt_main},
  32 #endif
  33 #ifdef BB_CP                    //bin
  34     {"cp", cp_main},
  35 #endif
  36 #ifdef BB_DATE                  //bin
  37     {"date", date_main},
  38 #endif
  39 #ifdef BB_DD                    //bin
  40     {"dd", dd_main},
  41 #endif
  42 #ifdef BB_DF                    //bin
  43     {"df", df_main},
  44 #endif
  45 #ifdef BB_DMESG                 //bin
  46     {"dmesg", dmesg_main},
  47 #endif
  48 #ifdef BB_DU                    //bin
  49     {"du", du_main},
  50 #endif
  51 #ifdef BB_DUTMP                 //usr/sbin
  52     {"dutmp", dutmp_main},
  53 #endif
  54 #ifdef BB_FDFLUSH               //bin
  55     {"fdflush", fdflush_main},
  56 #endif
  57 #ifdef BB_FIND                  //usr/bin
  58     {"find", find_main},
  59 #endif
  60 #ifdef BB_FREE                  //usr/bin
  61     {"free", free_main},
  62 #endif
  63 #ifdef BB_DEALLOCVT                     //usr/bin
  64     {"deallocvt", deallocvt_main},
  65 #endif
  66 #ifdef BB_FSCK_MINIX            //sbin
  67     {"fsck.minix", fsck_minix_main},
  68 #endif
  69 #ifdef BB_MKFS_MINIX            //sbin
  70     {"mkfs.minix", mkfs_minix_main},
  71 #endif
  72 #ifdef BB_GREP                  //bin
  73     {"grep", grep_main},
  74 #endif
  75 #ifdef BB_HALT                  //sbin
  76     {"halt", halt_main},
  77 #endif
  78 #ifdef BB_HEAD                  //bin
  79     {"head", head_main},
  80 #endif
  81 #ifdef BB_HOSTNAME              //bin
  82     {"hostname", hostname_main},
  83 #endif
  84 #ifdef BB_INIT                  //sbin
  85     {"init", init_main},
  86 #endif
  87 #ifdef BB_FEATURE_LINUXRC       //
  88     {"linuxrc", init_main},
  89 #endif
  90 #ifdef BB_KILL                  //bin
  91     {"kill", kill_main},
  92 #endif
  93 #ifdef BB_LENGTH                //usr/bin
  94     {"length", length_main},
  95 #endif
  96 #ifdef BB_LN                    //bin
  97     {"ln", ln_main},
  98 #endif
  99 #ifdef BB_LOADFONT              //usr/bin
 100     {"loadfont", loadfont_main},
 101 #endif
 102 #ifdef BB_LOADKMAP              //sbin
 103     {"loadkmap", loadkmap_main},
 104 #endif
 105 #ifdef BB_LS                    //bin
 106     {"ls", ls_main},
 107 #endif
 108 #ifdef BB_MAKEDEVS              //sbin
 109     {"makedevs", makedevs_main},
 110 #endif
 111 #ifdef BB_MATH                  //usr/bin
 112     {"math", math_main},
 113 #endif
 114 #ifdef BB_MKDIR                 //bin
 115     {"mkdir", mkdir_main},
 116 #endif
 117 #ifdef BB_MKFIFO                //usr/bin
 118     {"mkfifo", mkfifo_main},
 119 #endif
 120 #ifdef BB_MKNOD                 //bin
 121     {"mknod", mknod_main},
 122 #endif
 123 #ifdef BB_MKSWAP                //sbin
 124     {"mkswap", mkswap_main},
 125 #endif
 126 #ifdef BB_MNC                   //usr/bin
 127     {"mnc", mnc_main},
 128 #endif
 129 #ifdef BB_MORE                  //bin
 130     {"more", more_main},
 131 #endif
 132 #ifdef BB_MOUNT                 //bin
 133     {"mount", mount_main},
 134 #endif
 135 #ifdef BB_MT                    //bin
 136     {"mt", mt_main},
 137 #endif
 138 #ifdef BB_MV                    //bin
 139     {"mv", mv_main},
 140 #endif
 141 #ifdef BB_PING                  //bin
 142     {"ping", ping_main},
 143 #endif
 144 #ifdef BB_POWEROFF              //sbin
 145     {"poweroff", poweroff_main},
 146 #endif
 147 #ifdef BB_PRINTF                //usr/bin
 148     {"printf", printf_main},
 149 #endif
 150 #ifdef BB_PS                    //bin
 151     {"ps", ps_main},
 152 #endif
 153 #ifdef BB_PWD                   //bin
 154     {"pwd", pwd_main},
 155 #endif
 156 #ifdef BB_REBOOT                //sbin
 157     {"reboot", reboot_main},
 158 #endif
 159 #ifdef BB_RM                    //bin
 160     {"rm", rm_main},
 161 #endif
 162 #ifdef BB_RMDIR                 //bin
 163     {"rmdir", rmdir_main},
 164 #endif
 165 #ifdef BB_SFDISK                //sbin
 166     {"fdisk", sfdisk_main},
 167     {"sfdisk", sfdisk_main},
 168 #endif
 169 #ifdef BB_SED                   //bin
 170     {"sed", sed_main},
 171 #endif
 172 #ifdef BB_SLEEP                 //bin
 173     {"sleep", sleep_main},
 174 #endif
 175 #ifdef BB_SYNC                  //bin
 176     {"sync", sync_main},
 177 #endif
 178 #ifdef BB_SYSLOGD               //sbin
 179     {"syslogd", syslogd_main},
 180 #endif
 181 #ifdef BB_LOGGER                //usr/bin
 182     {"logger", logger_main},
 183 #endif
 184 #ifdef BB_SWAPONOFF             //sbin
 185     {"swapon", swap_on_off_main},
 186     {"swapoff", swap_on_off_main},
 187 #endif
 188 #ifdef BB_TAIL                  //usr/bin
 189     {"tail", tail_main},
 190 #endif
 191 #ifdef BB_TAR                   //bin
 192     {"tar", tar_main},
 193 #endif
 194 #ifdef BB_TEE                   //bin
 195     {"tee", tee_main},
 196 #endif
 197 #ifdef BB_TOUCH                 //usr/bin
 198     {"touch", touch_main},
 199 #endif
 200 #ifdef BB_TRUE_FALSE            //bin
 201     {"true", true_main},
 202     {"false", false_main},
 203 #endif
 204 #ifdef BB_UNAME                 //bin
 205     {"uname",  uname_main},
 206 #endif
 207 #ifdef BB_UMOUNT                //bin
 208     {"umount",  umount_main},
 209 #endif
 210 #ifdef BB_UPDATE                //sbin
 211     {"update", update_main},
 212 #endif
 213 #ifdef BB_GUNZIP                //bin
 214     {"zcat", gunzip_main},
 215     {"gunzip", gunzip_main},
 216 #endif
 217 #ifdef BB_GZIP                  //bin
 218     {"gzip", gzip_main},
 219 #endif
 220     {0}
 221 };
 222
 223 int main(int argc, char **argv)
 224 {
 225     char *s = argv[0];
 226     char *name = argv[0];
 227     const struct Applet *a = applets;
 228
 229     while (*s != '\0') {
 230         if (*s++ == '/')
 231             name = s;
 232     }
 233
 234     while (a->name != 0) {
 235         if (strcmp(name, a->name) == 0) {
 236             int status;
 237
 238             status = ((*(a->main)) (argc, argv));
 239             if (status < 0) {
 240                 fprintf(stderr, "%s: %s\n", a->name, strerror(errno));
 241             }
 242             fprintf(stderr, "\n");
 243             exit(status);
 244         }
 245         a++;
 246     }
 247     exit (busybox_main(argc, argv));
 248 }
 249
 250
 251 int busybox_main(int argc, char **argv)
 252 {
 253     int col=0;
 254     argc--;
 255     argv++;
 256
 257     if (been_there_done_that == 1 || argc < 1) {
 258         const struct Applet *a = applets;
 259         fprintf(stderr, "BusyBox v%s (%s) multi-call binary -- GPL2\n\n",
 260                 BB_VER, BB_BT);
 261         fprintf(stderr, "Usage: busybox [function] [arguments]...\n");
 262         fprintf(stderr, "   or: [function] [arguments]...\n\n");
 263         fprintf(stderr,
 264                 "\tMost people will create a symlink to busybox for each\n"
 265                 "\tfunction name, and busybox will act like whatever you invoke it as.\n");
 266         fprintf(stderr, "\nCurrently defined functions:\n");
 267
 268         while (a->name != 0) {
 269             col+=fprintf(stderr, "%s%s", ((col==0)? "\t":", "), (a++)->name);
 270             if (col>60) {
 271                 fprintf(stderr, ",\n");
 272                 col=0;
 273             }
 274         }
 275         fprintf(stderr, "\n\n");
 276         exit(-1);
 277     } else {
 278         /* If we've already been here once, exit now */
 279         been_there_done_that = 1;
 280         return (main(argc, argv));
 281     }
 282 }