summaryrefslogtreecommitdiff
path: root/applets/busybox.c
blob: a80a5678fa823065386623902d3863dfa48bedd9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
/* vi: set sw=4 ts=4: */
#include "internal.h"
#include <stdio.h>
#include <string.h>
#include <errno.h>

#ifndef BB_INIT
#undef BB_FEATURE_LINUXRC
#endif

static int been_there_done_that = 0;

/* It has been alledged that doing such things can
 * help reduce binary size when staticly linking,
 * of course with glibc, this is unlikely as long
 * as we use things like printf -- perhaps a printf
 * replacement may be in order 
 */
#if 0
void exit(int status) __attribute__ ((noreturn));
void exit(int status)
{
	_exit(status);
};
void abort(void) __attribute__ ((__noreturn__));
void abort(void)
{
	_exit(0);
};
int atexit(void (*__func) (void))
{
	_exit(0);
};
void *__libc_stack_end;
#endif


static const struct Applet applets[] = {

#ifdef BB_BASENAME				//usr/bin/basename
	{"basename", basename_main},
#endif
#ifdef BB_BUSYBOX				//bin
	{"busybox", busybox_main},
#endif
#ifdef BB_BLOCK_DEVICE			//sbin
	{"block_device", block_device_main},
#endif
#ifdef BB_CAT					//bin
	{"cat", cat_main},
#endif
#ifdef BB_CHMOD_CHOWN_CHGRP		//bin
	{"chmod", chmod_chown_chgrp_main},
	{"chown", chmod_chown_chgrp_main},
	{"chgrp", chmod_chown_chgrp_main},
#endif
#ifdef BB_CHROOT				//sbin
	{"chroot", chroot_main},
#endif
#ifdef BB_CLEAR					//usr/bin
	{"clear", clear_main},
#endif
#ifdef BB_CHVT					//usr/bin
	{"chvt", chvt_main},
#endif
#ifdef BB_CP_MV					//bin
	{"cp", cp_mv_main},
	{"mv", cp_mv_main},
#endif
#ifdef BB_DATE					//bin
	{"date", date_main},
#endif
#ifdef BB_DD					//bin
	{"dd", dd_main},
#endif
#ifdef BB_DF					//bin
	{"df", df_main},
#endif
#ifdef BB_DMESG					//bin
	{"dmesg", dmesg_main},
#endif
#ifdef BB_DU					//bin
	{"du", du_main},
#endif
#ifdef BB_DUTMP					//usr/sbin
	{"dutmp", dutmp_main},
#endif
#ifdef BB_FBSET					//usr/sbin
	{"fbset", fbset_main},
#endif
#ifdef BB_FDFLUSH				//bin
	{"fdflush", fdflush_main},
#endif
#ifdef BB_FIND					//usr/bin
	{"find", find_main},
#endif
#ifdef BB_FREE					//usr/bin
	{"free", free_main},
#endif
#ifdef BB_DEALLOCVT				//usr/bin
	{"deallocvt", deallocvt_main},
#endif
#ifdef BB_FSCK_MINIX			//sbin
	{"fsck.minix", fsck_minix_main},
#endif
#ifdef BB_MKFS_MINIX			//sbin
	{"mkfs.minix", mkfs_minix_main},
#endif
#ifdef BB_GREP					//bin
	{"grep", grep_main},
#endif
#ifdef BB_HALT					//sbin
	{"halt", halt_main},
#endif
#ifdef BB_HEAD					//bin
	{"head", head_main},
#endif
#ifdef BB_HOSTID				//usr/bin
	{"hostid", hostid_main},
#endif
#ifdef BB_HOSTNAME				//bin
	{"hostname", hostname_main},
#endif
#ifdef BB_INIT					//sbin
	{"init", init_main},
#endif
#ifdef BB_INSMOD				//sbin
	{"insmod", insmod_main},
#endif
#ifdef BB_FEATURE_LINUXRC		//
	{"linuxrc", init_main},
#endif
#ifdef BB_KILL					//bin
	{"kill", kill_main},
#endif
#ifdef BB_LENGTH				//usr/bin
	{"length", length_main},
#endif
#ifdef BB_LN					//bin
	{"ln", ln_main},
#endif
#ifdef BB_LOADACM				//usr/bin
	{"loadacm", loadacm_main},
#endif
#ifdef BB_LOADFONT				//usr/bin
	{"loadfont", loadfont_main},
#endif
#ifdef BB_LOADKMAP				//sbin
	{"loadkmap", loadkmap_main},
#endif
#ifdef BB_LS					//bin
	{"ls", ls_main},
#endif
#ifdef BB_LSMOD					//sbin
	{"lsmod", lsmod_main},
#endif
#ifdef BB_MAKEDEVS				//sbin
	{"makedevs", makedevs_main},
#endif
#ifdef BB_MATH					//usr/bin
	{"math", math_main},
#endif
#ifdef BB_MKDIR					//bin
	{"mkdir", mkdir_main},
#endif
#ifdef BB_MKFIFO				//usr/bin
	{"mkfifo", mkfifo_main},
#endif
#ifdef BB_MKNOD					//bin
	{"mknod", mknod_main},
#endif
#ifdef BB_MKSWAP				//sbin
	{"mkswap", mkswap_main},
#endif
#ifdef BB_MNC					//usr/bin
	{"mnc", mnc_main},
#endif
#ifdef BB_MORE					//bin
	{"more", more_main},
#endif
#ifdef BB_MOUNT					//bin
	{"mount", mount_main},
#endif
#ifdef BB_MT					//bin
	{"mt", mt_main},
#endif
#ifdef BB_NSLOOKUP				//usr/bin
	{"nslookup", nslookup_main},
#endif
#ifdef BB_PING					//bin
	{"ping", ping_main},
#endif
#ifdef BB_POWEROFF				//sbin
	{"poweroff", poweroff_main},
#endif
#ifdef BB_PRINTF				//usr/bin
	{"printf", printf_main},
#endif
#ifdef BB_PS					//bin
	{"ps", ps_main},
#endif
#ifdef BB_PWD					//bin
	{"pwd", pwd_main},
#endif
#ifdef BB_REBOOT				//sbin
	{"reboot", reboot_main},
#endif
#ifdef BB_RM					//bin
	{"rm", rm_main},
#endif
#ifdef BB_RMDIR					//bin
	{"rmdir", rmdir_main},
#endif
#ifdef BB_RMMOD					//sbin
	{"rmmod", rmmod_main},
#endif
#ifdef BB_SFDISK				//sbin
	{"fdisk", sfdisk_main},
	{"sfdisk", sfdisk_main},
#endif
#ifdef BB_SED					//bin
	{"sed", sed_main},
#endif
#ifdef BB_SLEEP					//bin
	{"sleep", sleep_main},
#endif
#ifdef BB_SORT					//bin
	{"sort", sort_main},
#endif
#ifdef BB_SYNC					//bin
	{"sync", sync_main},
#endif
#ifdef BB_SYSLOGD				//sbin
	{"syslogd", syslogd_main},
#endif
#ifdef BB_LOGGER				//usr/bin
	{"logger", logger_main},
#endif
#ifdef BB_LOGNAME				//usr/bin
	{"logname", logname_main},
#endif
#ifdef BB_SWAPONOFF				//sbin
	{"swapon", swap_on_off_main},
	{"swapoff", swap_on_off_main},
#endif
#ifdef BB_TAIL					//usr/bin
	{"tail", tail_main},
#endif
#ifdef BB_TAR					//bin
	{"tar", tar_main},
#endif
#ifdef BB_TELNET				//usr/bin
	{"telnet", telnet_main},
#endif
#ifdef BB_TEE					//bin
	{"tee", tee_main},
#endif
#ifdef BB_TOUCH					//usr/bin
	{"touch", touch_main},
#endif
#ifdef BB_TRUE_FALSE			//bin
	{"true", true_main},
	{"false", false_main},
#endif
#ifdef BB_TTY					//usr/bin
	{"tty", tty_main},
#endif
#ifdef BB_UNAME					//bin
	{"uname", uname_main},
#endif
#ifdef BB_UMOUNT				//bin
	{"umount", umount_main},
#endif
#ifdef BB_UNIQ					//bin
	{"uniq", uniq_main},
#endif
#ifdef BB_UPDATE				//sbin
	{"update", update_main},
#endif
#ifdef BB_WC					//usr/bin
	{"wc", wc_main},
#endif
#ifdef BB_WHOAMI				//usr/bin
	{"whoami", whoami_main},
#endif
#ifdef BB_YES					//usr/bin
	{"yes", yes_main},
#endif
#ifdef BB_GUNZIP				//bin
	{"zcat", gunzip_main},
	{"gunzip", gunzip_main},
#endif
#ifdef BB_GZIP					//bin
	{"gzip", gzip_main},
#endif
	{0}
};



int main(int argc, char **argv)
{
	char				*s		= argv[0];
	char				*name	= argv[0];
	const struct Applet	*a		= applets;

	while (*s != '\0') {
		if (*s++ == '/')
			name = s;
	}

	*argv = name;

	while (a->name != 0) {
		if (strcmp(name, a->name) == 0) {
			int status;

			status = ((*(a->main)) (argc, argv));
			if (status < 0) {
				fprintf(stderr, "%s: %s\n", a->name, strerror(errno));
			}
			fprintf(stderr, "\n");
			exit(status);
		}
		a++;
	}
	exit(busybox_main(argc, argv));
}


int busybox_main(int argc, char **argv)
{
	int col = 0;

	argc--;
	argv++;

	if (been_there_done_that == 1 || argc < 1) {
		const struct Applet *a = applets;

		fprintf(stderr, "BusyBox v%s (%s) multi-call binary -- GPL2\n\n",
				BB_VER, BB_BT);
		fprintf(stderr, "Usage: busybox [function] [arguments]...\n");
		fprintf(stderr, "   or: [function] [arguments]...\n\n");
		fprintf(stderr,
				"\tMost people will create a link to busybox for each\n"
				"\tfunction name, and busybox will act like whatever you invoke it as.\n");
		fprintf(stderr, "\nCurrently defined functions:\n");

		while (a->name != 0) {
			col +=
				fprintf(stderr, "%s%s", ((col == 0) ? "\t" : ", "),
						(a++)->name);
			if (col > 60 && a->name != 0) {
				fprintf(stderr, ",\n");
				col = 0;
			}
		}
		fprintf(stderr, "\n\n");
		exit(-1);
	} else {
		/* If we've already been here once, exit now */
		been_there_done_that = 1;
		return (main(argc, argv));
	}
}

/*
Local Variables:
c-file-style: "linux"
c-basic-offset: 4
tab-width: 4
End:
*/