applets/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_more_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_CP                    //bin
  31     {"cp", cp_main},
  32 #endif
  33 #ifdef BB_DATE                  //bin
  34     {"date", date_main},
  35 #endif
  36 #ifdef BB_DD                    //bin
  37     {"dd", dd_main},
  38 #endif
  39 #ifdef BB_DF                    //bin
  40     {"df", df_main},
  41 #endif
  42 #ifdef BB_DMESG                 //bin
  43     {"dmesg", dmesg_main},
  44 #endif
  45 #ifdef BB_DUTMP                 //usr/sbin
  46     {"dutmp", cat_more_main},
  47 #endif
  48 #ifdef BB_FDFLUSH               //bin
  49     {"fdflush", fdflush_main},
  50 #endif
  51 #ifdef BB_FIND                  //usr/bin
  52     {"find", find_main},
  53 #endif
  54 #ifdef BB_GREP                  //bin
  55     {"grep", grep_main},
  56 #endif
  57 #ifdef BB_HALT                  //sbin
  58     {"halt", halt_main},
  59 #endif
  60 #ifdef BB_INIT                  //sbin
  61     {"init", init_main},
  62 #endif
  63 #ifdef BB_KILL                  //bin
  64     {"kill", kill_main},
  65 #endif
  66 #ifdef BB_LENGTH                //usr/bin
  67     {"length", length_main},
  68 #endif
  69 #ifdef BB_LN                    //bin
  70     {"ln", ln_main},
  71 #endif
  72 #ifdef BB_LOADFONT              //usr/bin
  73     {"loadfont", loadfont_main},
  74 #endif
  75 #ifdef BB_LOADKMAP              //sbin
  76     {"loadkmap", loadkmap_main},
  77 #endif
  78 #ifdef BB_LS                    //bin
  79     {"ls", ls_main},
  80 #endif
  81 #ifdef BB_MAKEDEVS              //sbin
  82     {"makedevs", makedevs_main},
  83 #endif
  84 #ifdef BB_MATH                  //usr/bin
  85     {"math", math_main},
  86 #endif
  87 #ifdef BB_MKDIR                 //bin
  88     {"mkdir", mkdir_main},
  89 #endif
  90 #ifdef BB_MKNOD                 //bin
  91     {"mknod", mknod_main},
  92 #endif
  93 #ifdef BB_MKSWAP                //sbin
  94     {"mkswap", mkswap_main},
  95 #endif
  96 #ifdef BB_MNC                   //usr/bin
  97     {"mnc", mnc_main},
  98 #endif
  99 #ifdef BB_MORE                  //bin
 100     {"more", more_main},
 101 #endif
 102 #ifdef BB_MOUNT                 //bin
 103     {"mount", mount_main},
 104 #endif
 105 #ifdef BB_MT                    //bin
 106     {"mt", mt_main},
 107 #endif
 108 #ifdef BB_MV                    //bin
 109     {"mv", mv_main},
 110 #endif
 111 #ifdef BB_PRINTF                //usr/bin
 112     {"printf", printf_main},
 113 #endif
 114 #ifdef BB_PWD                   //bin
 115     {"pwd", pwd_main},
 116 #endif
 117 #ifdef BB_REBOOT                //sbin
 118     {"reboot", reboot_main},
 119 #endif
 120 #ifdef BB_RM                    //bin
 121     {"rm", rm_main},
 122 #endif
 123 #ifdef BB_RMDIR                 //bin
 124     {"rmdir", rmdir_main},
 125 #endif
 126 #ifdef BB_SLEEP                 //bin
 127     {"sleep", sleep_main},
 128 #endif
 129 #ifdef BB_TAR                   //bin
 130     {"tar", tar_main},
 131 #endif
 132 #ifdef BB_SWAPONOFF             //sbin
 133     {"swapon", swap_on_off_main},
 134     {"swapoff", swap_on_off_main},
 135 #endif
 136 #ifdef BB_SYNC                  //bin
 137     {"sync", sync_main},
 138 #endif
 139 #ifdef BB_TOUCH                 //usr/bin
 140     {"touch", touch_main},
 141 #endif
 142 #ifdef BB_TRUE_FALSE            //bin
 143     {"true", true_main},
 144     {"false", false_main},
 145 #endif
 146 #ifdef BB_UMOUNT                //bin
 147     {"umount",  umount_main},
 148 #endif
 149 #ifdef BB_UPDATE                //sbin
 150     {"update", update_main},
 151 #endif
 152 #ifdef BB_ZCAT                  //bin
 153     {"zcat", zcat_main},
 154     {"gunzip", zcat_main},
 155 #endif
 156 #ifdef BB_GZIP                  //bin
 157     {"gzip", gzip_main},
 158 #endif
 159     {0}
 160 };
 161
 162 int main(int argc, char **argv)
 163 {
 164     char *s = argv[0];
 165     char *name = argv[0];
 166     const struct Applet *a = applets;
 167
 168     while (*s != '\0') {
 169         if (*s++ == '/')
 170             name = s;
 171     }
 172
 173     while (a->name != 0) {
 174         if (strcmp(name, a->name) == 0) {
 175             int status;
 176
 177             status = ((*(a->main)) (argc, argv));
 178             if (status < 0) {
 179                 fprintf(stderr, "%s: %s\n", a->name, strerror(errno));
 180             }
 181             fprintf(stderr, "\n");
 182             exit(status);
 183         }
 184         a++;
 185     }
 186     exit (busybox_main(argc, argv));
 187 }
 188
 189
 190 int busybox_main(int argc, char **argv)
 191 {
 192     int col=0;
 193     argc--;
 194     argv++;
 195
 196     if (been_there_done_that == 1 || argc < 1) {
 197         const struct Applet *a = applets;
 198         fprintf(stderr, "BusyBox v%s (%s) multi-call binary -- GPL2\n",
 199                 BB_VER, BB_BT);
 200         fprintf(stderr, "\nUsage:\t[function] [arguments]...\n");
 201         fprintf(stderr, "\tbusybox [function] [arguments]...\n");
 202         fprintf(stderr,
 203                 "\n\tMost people will create a symlink to busybox for each\n"
 204                 "\tfunction name, and busybox will act like whatever you invoke it as.\n");
 205         fprintf(stderr, "\nCurrently defined functions:\n");
 206
 207         while (a->name != 0) {
 208             col+=fprintf(stderr, "%s%s", ((col==0)? "\t":", "), (a++)->name);
 209             if (col>60) {
 210                 fprintf(stderr, ",\n");
 211                 col=0;
 212             }
 213         }
 214         fprintf(stderr, "\n\n");
 215         exit(-1);
 216     } else {
 217         /* If we've already been here once, exit now */
 218         been_there_done_that = 1;
 219         return (main(argc, argv));
 220     }
 221 }