ca767584ac94069ddcf94cb8a26bb7d5e0c366b6
[oweals/busybox.git] / 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_DATE
69         {"date", date_main, _BB_DIR_BIN},
70 #endif
71 #ifdef BB_DD
72         {"dd", dd_main, _BB_DIR_BIN},
73 #endif
74 #ifdef BB_DF
75         {"df", df_main, _BB_DIR_BIN},
76 #endif
77 #ifdef BB_DIRNAME
78         {"dirname", dirname_main, _BB_DIR_USR_BIN},
79 #endif
80 #ifdef BB_DMESG
81         {"dmesg", dmesg_main, _BB_DIR_BIN},
82 #endif
83 #ifdef BB_DU
84         {"du", du_main, _BB_DIR_BIN},
85 #endif
86 #ifdef BB_DUTMP
87         {"dutmp", dutmp_main, _BB_DIR_USR_SBIN},
88 #endif
89 #ifdef BB_ECHO
90         {"echo", echo_main, _BB_DIR_BIN},
91 #endif
92 #ifdef BB_TRUE_FALSE
93         {"false", false_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_GREP
117         {"grep", grep_main, _BB_DIR_BIN},
118 #endif
119 #ifdef BB_GUNZIP
120         {"gunzip", gunzip_main, _BB_DIR_BIN},
121 #endif
122 #ifdef BB_GZIP
123         {"gzip", gzip_main, _BB_DIR_BIN},
124 #endif
125 #ifdef BB_HALT
126         {"halt", halt_main, _BB_DIR_SBIN},
127 #endif
128 #ifdef BB_HEAD
129         {"head", head_main, _BB_DIR_BIN},
130 #endif
131 #ifdef BB_HOSTID
132         {"hostid", hostid_main, _BB_DIR_USR_BIN},
133 #endif
134 #ifdef BB_HOSTNAME
135         {"hostname", hostname_main, _BB_DIR_BIN},
136 #endif
137 #ifdef BB_INIT
138         {"init", init_main, _BB_DIR_SBIN},
139 #endif
140 #ifdef BB_INSMOD
141         {"insmod", insmod_main, _BB_DIR_SBIN},
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_LINUXRC
153         {"linuxrc", init_main, _BB_DIR_ROOT},
154 #endif
155 #ifdef BB_LN
156         {"ln", ln_main, _BB_DIR_BIN},
157 #endif
158 #ifdef BB_LOADACM
159         {"loadacm", loadacm_main, _BB_DIR_USR_BIN},
160 #endif
161 #ifdef BB_LOADFONT
162         {"loadfont", loadfont_main, _BB_DIR_USR_BIN},
163 #endif
164 #ifdef BB_LOADKMAP
165         {"loadkmap", loadkmap_main, _BB_DIR_SBIN},
166 #endif
167 #ifdef BB_LOGGER
168         {"logger", logger_main, _BB_DIR_USR_BIN},
169 #endif
170 #ifdef BB_LOGNAME
171         {"logname", logname_main, _BB_DIR_USR_BIN},
172 #endif
173 #ifdef BB_LS
174         {"ls", ls_main, _BB_DIR_BIN},
175 #endif
176 #ifdef BB_LSMOD
177         {"lsmod", lsmod_main, _BB_DIR_SBIN},
178 #endif
179 #ifdef BB_MAKEDEVS
180         {"makedevs", makedevs_main, _BB_DIR_SBIN},
181 #endif
182 #ifdef BB_MATH
183         {"math", math_main, _BB_DIR_USR_BIN},
184 #endif
185 #ifdef BB_MKDIR
186         {"mkdir", mkdir_main, _BB_DIR_BIN},
187 #endif
188 #ifdef BB_MKFIFO
189         {"mkfifo", mkfifo_main, _BB_DIR_USR_BIN},
190 #endif
191 #ifdef BB_MKFS_MINIX
192         {"mkfs.minix", mkfs_minix_main, _BB_DIR_SBIN},
193 #endif
194 #ifdef BB_MKNOD
195         {"mknod", mknod_main, _BB_DIR_BIN},
196 #endif
197 #ifdef BB_MKSWAP
198         {"mkswap", mkswap_main, _BB_DIR_SBIN},
199 #endif
200 #ifdef BB_MKTEMP
201         {"mktemp", mktemp_main, _BB_DIR_BIN},
202 #endif
203 #ifdef BB_MNC
204         {"mnc", mnc_main, _BB_DIR_USR_BIN},
205 #endif
206 #ifdef BB_MORE
207         {"more", more_main, _BB_DIR_BIN},
208 #endif
209 #ifdef BB_MOUNT
210         {"mount", mount_main, _BB_DIR_BIN},
211 #endif
212 #ifdef BB_MT
213         {"mt", mt_main, _BB_DIR_BIN},
214 #endif
215 #ifdef BB_CP_MV
216         {"mv", cp_mv_main, _BB_DIR_BIN},
217 #endif
218 #ifdef BB_NSLOOKUP
219         {"nslookup", nslookup_main, _BB_DIR_USR_BIN},
220 #endif
221 #ifdef BB_PING
222         {"ping", ping_main, _BB_DIR_BIN},
223 #endif
224 #ifdef BB_POWEROFF
225         {"poweroff", poweroff_main, _BB_DIR_SBIN},
226 #endif
227 #ifdef BB_PRINTF
228         {"printf", printf_main, _BB_DIR_USR_BIN},
229 #endif
230 #ifdef BB_PS
231         {"ps", ps_main, _BB_DIR_BIN},
232 #endif
233 #ifdef BB_PWD
234         {"pwd", pwd_main, _BB_DIR_BIN},
235 #endif
236 #ifdef BB_REBOOT
237         {"reboot", reboot_main, _BB_DIR_SBIN},
238 #endif
239 #ifdef BB_RM
240         {"rm", rm_main, _BB_DIR_BIN},
241 #endif
242 #ifdef BB_RMDIR
243         {"rmdir", rmdir_main, _BB_DIR_BIN},
244 #endif
245 #ifdef BB_RMMOD
246         {"rmmod", rmmod_main, _BB_DIR_SBIN},
247 #endif
248 #ifdef BB_SED
249         {"sed", sed_main, _BB_DIR_BIN},
250 #endif
251 #ifdef BB_SETKEYCODES
252         {"setkeycodes", setkeycodes_main, _BB_DIR_USR_BIN},
253 #endif
254 #ifdef BB_SFDISK
255         {"sfdisk", sfdisk_main, _BB_DIR_SBIN},
256 #endif
257 #ifdef BB_SH
258         {"sh", shell_main, _BB_DIR_BIN},
259 #endif
260 #ifdef BB_SLEEP
261         {"sleep", sleep_main, _BB_DIR_BIN},
262 #endif
263 #ifdef BB_SORT
264         {"sort", sort_main, _BB_DIR_BIN},
265 #endif
266 #ifdef BB_SYNC
267         {"sync", sync_main, _BB_DIR_BIN},
268 #endif
269 #ifdef BB_SYSLOGD
270         {"syslogd", syslogd_main, _BB_DIR_SBIN},
271 #endif
272 #ifdef BB_SWAPONOFF
273         {"swapon", swap_on_off_main, _BB_DIR_SBIN},
274 #endif
275 #ifdef BB_SWAPONOFF
276         {"swapoff", swap_on_off_main, _BB_DIR_SBIN},
277 #endif
278 #ifdef BB_TAIL
279         {"tail", tail_main, _BB_DIR_USR_BIN},
280 #endif
281 #ifdef BB_TAR
282         {"tar", tar_main, _BB_DIR_BIN},
283 #endif
284 #ifdef BB_TELNET
285         {"telnet", telnet_main, _BB_DIR_USR_BIN},
286 #endif
287 #ifdef BB_TEST
288         {"test", test_main, _BB_DIR_USR_BIN},
289 #endif
290 #ifdef BB_TEE
291         {"tee", tee_main, _BB_DIR_BIN},
292 #endif
293 #ifdef BB_TOUCH
294         {"touch", touch_main, _BB_DIR_USR_BIN},
295 #endif
296 #ifdef BB_TR
297         {"tr", tr_main, _BB_DIR_USR_BIN},
298 #endif
299 #ifdef BB_TRUE_FALSE
300         {"true", true_main, _BB_DIR_BIN},
301 #endif
302 #ifdef BB_TTY
303         {"tty", tty_main, _BB_DIR_USR_BIN},
304 #endif
305 #ifdef BB_UMOUNT
306         {"umount", umount_main, _BB_DIR_BIN},
307 #endif
308 #ifdef BB_UNAME
309         {"uname", uname_main, _BB_DIR_BIN},
310 #endif
311 #ifdef BB_UNIQ
312         {"uniq", uniq_main, _BB_DIR_USR_BIN},
313 #endif
314 #ifdef BB_UPDATE
315         {"update", update_main, _BB_DIR_SBIN},
316 #endif
317 #ifdef BB_UPTIME
318         {"uptime", uptime_main, _BB_DIR_USR_BIN},
319 #endif
320 #ifdef BB_USLEEP
321         {"usleep", usleep_main, _BB_DIR_BIN},
322 #endif
323 #ifdef BB_WC
324         {"wc", wc_main, _BB_DIR_USR_BIN},
325 #endif
326 #ifdef BB_WHOAMI
327         {"whoami", whoami_main, _BB_DIR_USR_BIN},
328 #endif
329 #ifdef BB_YES
330         {"yes", yes_main, _BB_DIR_USR_BIN},
331 #endif
332 #ifdef BB_GUNZIP
333         {"zcat", gunzip_main, _BB_DIR_BIN},
334 #endif
335 #ifdef BB_TEST
336         {"[", test_main, _BB_DIR_USR_BIN},
337 #endif
338         {0}
339 };
340
341
342
343 int main(int argc, char **argv)
344 {
345         char                            *s;
346         char                            *name;
347         const struct Applet     *a              = applets;
348
349         for (s = name = argv[0]; *s != '\0';) {
350                 if (*s++ == '/')
351                         name = s;
352         }
353
354         *argv = name;
355
356         while (a->name != 0) {
357                 if (strcmp(name, a->name) == 0) {
358                         int status;
359
360                         status = ((*(a->main)) (argc, argv));
361                         if (status < 0) {
362                                 fprintf(stderr, "%s: %s\n", a->name, strerror(errno));
363                         }
364                         fprintf(stderr, "\n");
365                         exit(status);
366                 }
367                 a++;
368         }
369         exit(busybox_main(argc, argv));
370 }
371
372
373 int busybox_main(int argc, char **argv)
374 {
375         int col = 0;
376
377         argc--;
378         argv++;
379
380         if (been_there_done_that == 1 || argc < 1) {
381                 const struct Applet *a = applets;
382
383                 fprintf(stderr, "BusyBox v%s (%s) multi-call binary -- GPL2\n\n",
384                                 BB_VER, BB_BT);
385                 fprintf(stderr, "Usage: busybox [function] [arguments]...\n");
386                 fprintf(stderr, "   or: [function] [arguments]...\n\n");
387                 fprintf(stderr,
388                                 "\tBusyBox is a multi-call binary that combines many common Unix\n"
389                                 "\tutilities into a single executable.  Most people will create a\n"
390                                 "\tlink to busybox for each function they wish to use, and BusyBox\n"
391                                 "\twill act like whatever it was invoked as.\n");
392                 fprintf(stderr, "\nCurrently defined functions:\n");
393
394                 while (a->name != 0) {
395                         col +=
396                                 fprintf(stderr, "%s%s", ((col == 0) ? "\t" : ", "),
397                                                 (a++)->name);
398                         if (col > 60 && a->name != 0) {
399                                 fprintf(stderr, ",\n");
400                                 col = 0;
401                         }
402                 }
403                 fprintf(stderr, "\n\n");
404                 exit(-1);
405         } else {
406                 /* If we've already been here once, exit now */
407                 been_there_done_that = 1;
408                 return (main(argc, argv));
409         }
410 }
411
412 /*
413 Local Variables:
414 c-file-style: "linux"
415 c-basic-offset: 4
416 tab-width: 4
417 End:
418 */