busybox.c - codeaurora/busybox - Gitiles

 /* vi: set sw=4 ts=4: */
 #include "internal.h"
 #include <stdio.h>
 #include <string.h>
 #include <errno.h>

 #define bb_need_full_version
 #define BB_DECLARE_EXTERN
 #include "messages.c"

 static int been_there_done_that = 0;

 const struct BB_applet applets[] = {

 #ifdef BB_AR
 	{"ar", ar_main, _BB_DIR_USR_BIN, ar_usage},
 #endif
 #ifdef BB_BASENAME
 	{"basename", basename_main, _BB_DIR_USR_BIN, basename_usage},
 #endif
 	{"busybox", busybox_main, _BB_DIR_BIN, NULL},
 #ifdef BB_CAT
 	{"cat", cat_main, _BB_DIR_BIN, cat_usage},
 #endif
 #ifdef BB_CHMOD_CHOWN_CHGRP
 	{"chgrp", chmod_chown_chgrp_main, _BB_DIR_BIN, chgrp_usage},
 #endif
 #ifdef BB_CHMOD_CHOWN_CHGRP
 	{"chmod", chmod_chown_chgrp_main, _BB_DIR_BIN, chmod_usage},
 #endif
 #ifdef BB_CHMOD_CHOWN_CHGRP
 	{"chown", chmod_chown_chgrp_main, _BB_DIR_BIN, chown_usage},
 #endif
 #ifdef BB_CHROOT
 	{"chroot", chroot_main, _BB_DIR_USR_SBIN, chroot_usage},
 #endif
 #ifdef BB_CLEAR
 	{"clear", clear_main, _BB_DIR_USR_BIN, clear_usage},
 #endif
 #ifdef BB_CHVT
 	{"chvt", chvt_main, _BB_DIR_USR_BIN, chvt_usage},
 #endif
 #ifdef BB_CP_MV
 	{"cp", cp_mv_main, _BB_DIR_BIN, cp_usage},
 #endif
 #ifdef BB_CUT
 	{"cut", cut_main, _BB_DIR_USR_BIN, cut_usage},
 #endif
 #ifdef BB_DATE
 	{"date", date_main, _BB_DIR_BIN, date_usage},
 #endif
 #ifdef BB_DC
 	{"dc", dc_main, _BB_DIR_USR_BIN, dc_usage},
 #endif
 #ifdef BB_DD
 	{"dd", dd_main, _BB_DIR_BIN, dd_usage},
 #endif
 #ifdef BB_DF
 	{"df", df_main, _BB_DIR_BIN, df_usage},
 #endif
 #ifdef BB_DIRNAME
 	{"dirname", dirname_main, _BB_DIR_USR_BIN, dirname_usage},
 #endif
 #ifdef BB_DMESG
 	{"dmesg", dmesg_main, _BB_DIR_BIN, dmesg_usage},
 #endif
 #ifdef BB_DU
 	{"du", du_main, _BB_DIR_USR_BIN, du_usage},
 #endif
 #ifdef BB_DUMPKMAP
 	{"dumpkmap", dumpkmap_main, _BB_DIR_BIN, dumpkmap_usage},
 #endif
 #ifdef BB_DUTMP
 	{"dutmp", dutmp_main, _BB_DIR_USR_SBIN, dutmp_usage},
 #endif
 #ifdef BB_ECHO
 	{"echo", echo_main, _BB_DIR_BIN, echo_usage},
 #endif
 #ifdef BB_TRUE_FALSE
 	{"false", false_main, _BB_DIR_BIN, false_usage},
 #endif
 #ifdef BB_FBSET
 	{"fbset", fbset_main, _BB_DIR_USR_SBIN, NULL},
 #endif
 #ifdef BB_FDFLUSH
 	{"fdflush", fdflush_main, _BB_DIR_BIN, fdflush_usage},
 #endif
 #ifdef BB_FIND
 	{"find", find_main, _BB_DIR_USR_BIN, find_usage},
 #endif
 #ifdef BB_FREE
 	{"free", free_main, _BB_DIR_USR_BIN, free_usage},
 #endif
 #ifdef BB_FREERAMDISK
 	{"freeramdisk", freeramdisk_main, _BB_DIR_SBIN, freeramdisk_usage},
 #endif
 #ifdef BB_DEALLOCVT
 	{"deallocvt", deallocvt_main, _BB_DIR_USR_BIN, deallocvt_usage},
 #endif
 #ifdef BB_FSCK_MINIX
 	{"fsck.minix", fsck_minix_main, _BB_DIR_SBIN, fsck_minix_usage},
 #endif
 #ifdef BB_GETOPT
 	{"getopt", getopt_main, _BB_DIR_BIN},
 #endif
 #ifdef BB_GREP
 	{"grep", grep_main, _BB_DIR_BIN, grep_usage},
 #endif
 #ifdef BB_GUNZIP
 	{"gunzip", gunzip_main, _BB_DIR_BIN, gunzip_usage},
 #endif
 #ifdef BB_GZIP
 	{"gzip", gzip_main, _BB_DIR_BIN, gzip_usage},
 #endif
 #ifdef BB_HALT
 	{"halt", halt_main, _BB_DIR_SBIN, halt_usage},
 #endif
 #ifdef BB_HEAD
 	{"head", head_main, _BB_DIR_USR_BIN, head_usage},
 #endif
 #ifdef BB_HOSTID
 	{"hostid", hostid_main, _BB_DIR_USR_BIN, hostid_usage},
 #endif
 #ifdef BB_HOSTNAME
 	{"hostname", hostname_main, _BB_DIR_BIN, hostname_usage},
 #endif
 #ifdef BB_ID
 	{"id", id_main, _BB_DIR_USR_BIN, id_usage},
 #endif
 #ifdef BB_INIT
 	{"init", init_main, _BB_DIR_SBIN, NULL},
 #endif
 #ifdef BB_INSMOD
 	{"insmod", insmod_main, _BB_DIR_SBIN, insmod_usage},
 #endif
 #ifdef BB_KILL
 	{"kill", kill_main, _BB_DIR_BIN, kill_usage},
 #endif
 #ifdef BB_KILLALL
 	{"killall", kill_main, _BB_DIR_USR_BIN, kill_usage},
 #endif
 #ifdef BB_LENGTH
 	{"length", length_main, _BB_DIR_USR_BIN, length_usage},
 #endif
 #ifdef BB_LINUXRC
 	{"linuxrc", init_main, _BB_DIR_ROOT, init_usage},
 #endif
 #ifdef BB_LN
 	{"ln", ln_main, _BB_DIR_BIN, ln_usage},
 #endif
 #ifdef BB_LOADACM
 	{"loadacm", loadacm_main, _BB_DIR_USR_BIN, loadacm_usage},
 #endif
 #ifdef BB_LOADFONT
 	{"loadfont", loadfont_main, _BB_DIR_USR_BIN, loadfont_usage},
 #endif
 #ifdef BB_LOADKMAP
 	{"loadkmap", loadkmap_main, _BB_DIR_SBIN, loadkmap_usage},
 #endif
 #ifdef BB_LOGGER
 	{"logger", logger_main, _BB_DIR_USR_BIN, logger_usage},
 #endif
 #ifdef BB_LOGNAME
 	{"logname", logname_main, _BB_DIR_USR_BIN, logname_usage},
 #endif
 #ifdef BB_LS
 	{"ls", ls_main, _BB_DIR_BIN, ls_usage},
 #endif
 #ifdef BB_LSMOD
 	{"lsmod", lsmod_main, _BB_DIR_SBIN, lsmod_usage},
 #endif
 #ifdef BB_MAKEDEVS
 	{"makedevs", makedevs_main, _BB_DIR_SBIN, makedevs_usage},
 #endif
 #ifdef BB_MD5SUM
 	{"md5sum", md5sum_main, _BB_DIR_USR_BIN, md5sum_usage},
 #endif
 #ifdef BB_MKDIR
 	{"mkdir", mkdir_main, _BB_DIR_BIN, mkdir_usage},
 #endif
 #ifdef BB_MKFIFO
 	{"mkfifo", mkfifo_main, _BB_DIR_USR_BIN, mkfifo_usage},
 #endif
 #ifdef BB_MKFS_MINIX
 	{"mkfs.minix", mkfs_minix_main, _BB_DIR_SBIN, mkfs_minix_usage},
 #endif
 #ifdef BB_MKNOD
 	{"mknod", mknod_main, _BB_DIR_BIN, mknod_usage},
 #endif
 #ifdef BB_MKSWAP
 	{"mkswap", mkswap_main, _BB_DIR_SBIN, mkswap_usage},
 #endif
 #ifdef BB_MKTEMP
 	{"mktemp", mktemp_main, _BB_DIR_BIN, mktemp_usage},
 #endif
 #ifdef BB_NC
 	{"nc", nc_main, _BB_DIR_USR_BIN, nc_usage},
 #endif
 #ifdef BB_MORE
 	{"more", more_main, _BB_DIR_BIN, more_usage},
 #endif
 #ifdef BB_MOUNT
 	{"mount", mount_main, _BB_DIR_BIN, mount_usage},
 #endif
 #ifdef BB_MT
 	{"mt", mt_main, _BB_DIR_BIN, mt_usage},
 #endif
 #ifdef BB_CP_MV
 	{"mv", cp_mv_main, _BB_DIR_BIN, mv_usage},
 #endif
 #ifdef BB_NSLOOKUP
 	{"nslookup", nslookup_main, _BB_DIR_USR_BIN, nslookup_usage},
 #endif
 #ifdef BB_PING
 	{"ping", ping_main, _BB_DIR_BIN, ping_usage},
 #endif
 #ifdef BB_POWEROFF
 	{"poweroff", poweroff_main, _BB_DIR_SBIN, poweroff_usage},
 #endif
 #ifdef BB_PRINTF
 	{"printf", printf_main, _BB_DIR_USR_BIN, printf_usage},
 #endif
 #ifdef BB_PS
 	{"ps", ps_main, _BB_DIR_BIN, ps_usage},
 #endif
 #ifdef BB_PWD
 	{"pwd", pwd_main, _BB_DIR_BIN, pwd_usage},
 #endif
 #ifdef BB_RDATE
 	{"rdate", rdate_main, _BB_DIR_USR_BIN, rdate_usage},
 #endif
 #ifdef BB_REBOOT
 	{"reboot", reboot_main, _BB_DIR_SBIN, reboot_usage},
 #endif
 #ifdef BB_RENICE
 	{"renice", renice_main, _BB_DIR_USR_BIN},
 #endif
 #ifdef BB_RESET
 	{"reset", reset_main, _BB_DIR_USR_BIN, reset_usage},
 #endif
 #ifdef BB_RM
 	{"rm", rm_main, _BB_DIR_BIN, rm_usage},
 #endif
 #ifdef BB_RMDIR
 	{"rmdir", rmdir_main, _BB_DIR_BIN, rmdir_usage},
 #endif
 #ifdef BB_RMMOD
 	{"rmmod", rmmod_main, _BB_DIR_SBIN, rmmod_usage},
 #endif
 #ifdef BB_SED
 	{"sed", sed_main, _BB_DIR_BIN, sed_usage},
 #endif
 #ifdef BB_SETKEYCODES
 	{"setkeycodes", setkeycodes_main, _BB_DIR_USR_BIN, setkeycodes_usage},
 #endif
 #ifdef BB_SH
 	{"sh", shell_main, _BB_DIR_BIN, shell_usage},
 #endif
 #ifdef BB_SLEEP
 	{"sleep", sleep_main, _BB_DIR_BIN, sleep_usage},
 #endif
 #ifdef BB_SORT
 	{"sort", sort_main, _BB_DIR_USR_BIN, sort_usage},
 #endif
 #ifdef BB_SYNC
 	{"sync", sync_main, _BB_DIR_BIN, sync_usage},
 #endif
 #ifdef BB_SYSLOGD
 	{"syslogd", syslogd_main, _BB_DIR_SBIN, syslogd_usage},
 #endif
 #ifdef BB_SWAPONOFF
 	{"swapon", swap_on_off_main, _BB_DIR_SBIN, swapon_usage},
 #endif
 #ifdef BB_SWAPONOFF
 	{"swapoff", swap_on_off_main, _BB_DIR_SBIN, swapoff_usage},
 #endif
 #ifdef BB_TAIL
 	{"tail", tail_main, _BB_DIR_USR_BIN, tail_usage},
 #endif
 #ifdef BB_TAR
 	{"tar", tar_main, _BB_DIR_BIN, tar_usage},
 #endif
 #ifdef BB_TELNET
 	{"telnet", telnet_main, _BB_DIR_USR_BIN, telnet_usage},
 #endif
 #ifdef BB_TEST
 	{"test", test_main, _BB_DIR_USR_BIN, test_usage},
 #endif
 #ifdef BB_TEE
 	{"tee", tee_main, _BB_DIR_USR_BIN, tee_usage},
 #endif
 #ifdef BB_TOUCH
 	{"touch", touch_main, _BB_DIR_BIN, touch_usage},
 #endif
 #ifdef BB_TR
 	{"tr", tr_main, _BB_DIR_USR_BIN, tr_usage},
 #endif
 #ifdef BB_TRUE_FALSE
 	{"true", true_main, _BB_DIR_BIN, true_usage},
 #endif
 #ifdef BB_TTY
 	{"tty", tty_main, _BB_DIR_USR_BIN, tty_usage},
 #endif
 #ifdef BB_UMOUNT
 	{"umount", umount_main, _BB_DIR_BIN, umount_usage},
 #endif
 #ifdef BB_UNAME
 	{"uname", uname_main, _BB_DIR_BIN, uname_usage},
 #endif
 #ifdef BB_UNIQ
 	{"uniq", uniq_main, _BB_DIR_USR_BIN, uniq_usage},
 #endif
 #ifdef BB_UPDATE
 	{"update", update_main, _BB_DIR_SBIN, update_usage},
 #endif
 #ifdef BB_UPTIME
 	{"uptime", uptime_main, _BB_DIR_USR_BIN, uptime_usage},
 #endif
 #ifdef BB_UUENCODE
 	{"uuencode", uuencode_main, _BB_DIR_USR_BIN, uuencode_usage},
 #endif
 #ifdef BB_UUDECODE
 	{"uudecode", uudecode_main, _BB_DIR_USR_BIN, uudecode_usage},
 #endif
 #ifdef BB_USLEEP
 	{"usleep", usleep_main, _BB_DIR_BIN, usleep_usage},
 #endif
 #ifdef BB_WC
 	{"wc", wc_main, _BB_DIR_USR_BIN, wc_usage},
 #endif
 #ifdef BB_WHICH
 	{"which", which_main, _BB_DIR_USR_BIN, which_usage},
 #endif
 #ifdef BB_WHOAMI
 	{"whoami", whoami_main, _BB_DIR_USR_BIN, whoami_usage},
 #endif
 #ifdef BB_YES
 	{"yes", yes_main, _BB_DIR_USR_BIN, yes_usage},
 #endif
 #ifdef BB_GUNZIP
 	{"zcat", gunzip_main, _BB_DIR_BIN, gunzip_usage},
 #endif
 #ifdef BB_TEST
 	{"[", test_main, _BB_DIR_USR_BIN, test_usage},
 #endif
 	{0,NULL,0,NULL}
 };

 const char *applet_name;

 #ifdef BB_FEATURE_INSTALLER
 /*
  * directory table
  *		this should be consistent w/ the enum, internal.h::Location,
  *		or else...
  */
 static char* install_dir[] = {
 	"/",
 	"/bin",
 	"/sbin",
 	"/usr/bin",
 	"/usr/sbin",
 };

 /* abstract link() */
 typedef int (*__link_f)(const char *, const char *);

 /*
  * Where in the filesystem is this busybox?
  * [return]
  *		malloc'd string w/ full pathname of busybox's location
  *		NULL on failure
  */
 static char *busybox_fullpath()
 {
 	pid_t pid;
 	char path[256];
 	char proc[256];
 	int len;

 	pid = getpid();
 	sprintf(proc, "/proc/%d/exe", pid);
 	len = readlink(proc, path, 256);
 	if (len != -1) {
 		path[len] = 0;
 	} else {
 		errorMsg("%s: %s\n", proc, strerror(errno));
 		return NULL;
 	}
 	return strdup(path);
 }

 /* create (sym)links for each applet */
 static int install_links(const char *busybox, int use_symbolic_links)
 {
 	__link_f Link = link;

 	char command[256];
 	int i;
 	int rc = 0;

 	if (use_symbolic_links) Link = symlink;

 	for (i = 0; applets[i].name != NULL; i++) {
 		sprintf (
 			command,
 			"%s/%s",
 			install_dir[applets[i].location],
 			applets[i].name
 		);
 #if 1
 		rc |= Link(busybox, command);
 #else
 		puts(command);
 #endif
 		if (rc) {
 			errorMsg("%s: %s\n", command, strerror(errno));
 		}
 	}
 	return rc;
 }

 #endif /* BB_FEATURE_INSTALLER */


 int main(int argc, char **argv)
 {
 	const char				*s;
 	const struct BB_applet	*a		= applets;
 	applet_name = "busybox";

 #ifdef BB_FEATURE_INSTALLER
 	/*
 	 * This style of argument parsing doesn't scale well
 	 * in the event that busybox starts wanting more --options.
 	 * If someone has a cleaner approach, by all means implement it.
 	 */
 	if (argc > 1 && (strcmp(argv[1], "--install") == 0)) {
 		int use_symbolic_links = 0;
 		int rc = 0;
 		char *busybox;

 		/* to use symlinks, or not to use symlinks... */
 		if (argc > 2) {
 			if ((strcmp(argv[2], "-s") == 0)) {
 				use_symbolic_links = 1;
 			}
 		}

 		/* link */
 		busybox = busybox_fullpath();
 		if (busybox) {
 			install_links(busybox, use_symbolic_links);
 			free(busybox);
 		} else {
 			rc = 1;
 		}
 		return rc;
 	}
 #endif /* BB_FEATURE_INSTALLER */

 	for (s = applet_name = argv[0]; *s != '\0';) {
 		if (*s++ == '/')
 			applet_name = s;
 	}

 	*argv = (char*)applet_name;

 #ifdef BB_SH
 	/* Add in a special case hack -- whenever **argv == '-'
 	 * (i.e. '-su' or '-sh') always invoke the shell */
 	if (**argv == '-' && *(*argv+1)!= '-') {
 		exit(((*(shell_main)) (argc, argv)));
 	}
 #endif

 	while (a->name != 0) {
 		if (strcmp(applet_name, a->name) == 0) {
 			if (a->usage && argv[1] && strcmp(argv[1], "--help") == 0)
 				usage(a->usage);
 			exit(((*(a->main)) (argc, argv)));
 		}
 		a++;
 	}
 	return(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 BB_applet *a = applets;

 		fprintf(stderr, "%s\n\n"
 				"Usage: busybox [function] [arguments]...\n"
 				"   or: [function] [arguments]...\n\n"
 				"\tBusyBox is a multi-call binary that combines many common Unix\n"
 				"\tutilities into a single executable.  Most people will create a\n"
 				"\tlink to busybox for each function they wish to use, and BusyBox\n"
 				"\twill act like whatever it was invoked as.\n"
 				"\nCurrently defined functions:\n", full_version);

 		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);
 	}
 	/* 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:
 */
	/* vi: set sw=4 ts=4: */
	#include "internal.h"
	#include <stdio.h>
	#include <string.h>
	#include <errno.h>

	#define bb_need_full_version
	#define BB_DECLARE_EXTERN
	#include "messages.c"

	static int been_there_done_that = 0;

	const struct BB_applet applets[] = {

	#ifdef BB_AR
	{"ar", ar_main, _BB_DIR_USR_BIN, ar_usage},
	#endif
	#ifdef BB_BASENAME
	{"basename", basename_main, _BB_DIR_USR_BIN, basename_usage},
	#endif
	{"busybox", busybox_main, _BB_DIR_BIN, NULL},
	#ifdef BB_CAT
	{"cat", cat_main, _BB_DIR_BIN, cat_usage},
	#endif
	#ifdef BB_CHMOD_CHOWN_CHGRP
	{"chgrp", chmod_chown_chgrp_main, _BB_DIR_BIN, chgrp_usage},
	#endif
	#ifdef BB_CHMOD_CHOWN_CHGRP
	{"chmod", chmod_chown_chgrp_main, _BB_DIR_BIN, chmod_usage},
	#endif
	#ifdef BB_CHMOD_CHOWN_CHGRP
	{"chown", chmod_chown_chgrp_main, _BB_DIR_BIN, chown_usage},
	#endif
	#ifdef BB_CHROOT
	{"chroot", chroot_main, _BB_DIR_USR_SBIN, chroot_usage},
	#endif
	#ifdef BB_CLEAR
	{"clear", clear_main, _BB_DIR_USR_BIN, clear_usage},
	#endif
	#ifdef BB_CHVT
	{"chvt", chvt_main, _BB_DIR_USR_BIN, chvt_usage},
	#endif
	#ifdef BB_CP_MV
	{"cp", cp_mv_main, _BB_DIR_BIN, cp_usage},
	#endif
	#ifdef BB_CUT
	{"cut", cut_main, _BB_DIR_USR_BIN, cut_usage},
	#endif
	#ifdef BB_DATE
	{"date", date_main, _BB_DIR_BIN, date_usage},
	#endif
	#ifdef BB_DC
	{"dc", dc_main, _BB_DIR_USR_BIN, dc_usage},
	#endif
	#ifdef BB_DD
	{"dd", dd_main, _BB_DIR_BIN, dd_usage},
	#endif
	#ifdef BB_DF
	{"df", df_main, _BB_DIR_BIN, df_usage},
	#endif
	#ifdef BB_DIRNAME
	{"dirname", dirname_main, _BB_DIR_USR_BIN, dirname_usage},
	#endif
	#ifdef BB_DMESG
	{"dmesg", dmesg_main, _BB_DIR_BIN, dmesg_usage},
	#endif
	#ifdef BB_DU
	{"du", du_main, _BB_DIR_USR_BIN, du_usage},
	#endif
	#ifdef BB_DUMPKMAP
	{"dumpkmap", dumpkmap_main, _BB_DIR_BIN, dumpkmap_usage},
	#endif
	#ifdef BB_DUTMP
	{"dutmp", dutmp_main, _BB_DIR_USR_SBIN, dutmp_usage},
	#endif
	#ifdef BB_ECHO
	{"echo", echo_main, _BB_DIR_BIN, echo_usage},
	#endif
	#ifdef BB_TRUE_FALSE
	{"false", false_main, _BB_DIR_BIN, false_usage},
	#endif
	#ifdef BB_FBSET
	{"fbset", fbset_main, _BB_DIR_USR_SBIN, NULL},
	#endif
	#ifdef BB_FDFLUSH
	{"fdflush", fdflush_main, _BB_DIR_BIN, fdflush_usage},
	#endif
	#ifdef BB_FIND
	{"find", find_main, _BB_DIR_USR_BIN, find_usage},
	#endif
	#ifdef BB_FREE
	{"free", free_main, _BB_DIR_USR_BIN, free_usage},
	#endif
	#ifdef BB_FREERAMDISK
	{"freeramdisk", freeramdisk_main, _BB_DIR_SBIN, freeramdisk_usage},
	#endif
	#ifdef BB_DEALLOCVT
	{"deallocvt", deallocvt_main, _BB_DIR_USR_BIN, deallocvt_usage},
	#endif
	#ifdef BB_FSCK_MINIX
	{"fsck.minix", fsck_minix_main, _BB_DIR_SBIN, fsck_minix_usage},
	#endif
	#ifdef BB_GETOPT
	{"getopt", getopt_main, _BB_DIR_BIN},
	#endif
	#ifdef BB_GREP
	{"grep", grep_main, _BB_DIR_BIN, grep_usage},
	#endif
	#ifdef BB_GUNZIP
	{"gunzip", gunzip_main, _BB_DIR_BIN, gunzip_usage},
	#endif
	#ifdef BB_GZIP
	{"gzip", gzip_main, _BB_DIR_BIN, gzip_usage},
	#endif
	#ifdef BB_HALT
	{"halt", halt_main, _BB_DIR_SBIN, halt_usage},
	#endif
	#ifdef BB_HEAD
	{"head", head_main, _BB_DIR_USR_BIN, head_usage},
	#endif
	#ifdef BB_HOSTID
	{"hostid", hostid_main, _BB_DIR_USR_BIN, hostid_usage},
	#endif
	#ifdef BB_HOSTNAME
	{"hostname", hostname_main, _BB_DIR_BIN, hostname_usage},
	#endif
	#ifdef BB_ID
	{"id", id_main, _BB_DIR_USR_BIN, id_usage},
	#endif
	#ifdef BB_INIT
	{"init", init_main, _BB_DIR_SBIN, NULL},
	#endif
	#ifdef BB_INSMOD
	{"insmod", insmod_main, _BB_DIR_SBIN, insmod_usage},
	#endif
	#ifdef BB_KILL
	{"kill", kill_main, _BB_DIR_BIN, kill_usage},
	#endif
	#ifdef BB_KILLALL
	{"killall", kill_main, _BB_DIR_USR_BIN, kill_usage},
	#endif
	#ifdef BB_LENGTH
	{"length", length_main, _BB_DIR_USR_BIN, length_usage},
	#endif
	#ifdef BB_LINUXRC
	{"linuxrc", init_main, _BB_DIR_ROOT, init_usage},
	#endif
	#ifdef BB_LN
	{"ln", ln_main, _BB_DIR_BIN, ln_usage},
	#endif
	#ifdef BB_LOADACM
	{"loadacm", loadacm_main, _BB_DIR_USR_BIN, loadacm_usage},
	#endif
	#ifdef BB_LOADFONT
	{"loadfont", loadfont_main, _BB_DIR_USR_BIN, loadfont_usage},
	#endif
	#ifdef BB_LOADKMAP
	{"loadkmap", loadkmap_main, _BB_DIR_SBIN, loadkmap_usage},
	#endif
	#ifdef BB_LOGGER
	{"logger", logger_main, _BB_DIR_USR_BIN, logger_usage},
	#endif
	#ifdef BB_LOGNAME
	{"logname", logname_main, _BB_DIR_USR_BIN, logname_usage},
	#endif
	#ifdef BB_LS
	{"ls", ls_main, _BB_DIR_BIN, ls_usage},
	#endif
	#ifdef BB_LSMOD
	{"lsmod", lsmod_main, _BB_DIR_SBIN, lsmod_usage},
	#endif
	#ifdef BB_MAKEDEVS
	{"makedevs", makedevs_main, _BB_DIR_SBIN, makedevs_usage},
	#endif
	#ifdef BB_MD5SUM
	{"md5sum", md5sum_main, _BB_DIR_USR_BIN, md5sum_usage},
	#endif
	#ifdef BB_MKDIR
	{"mkdir", mkdir_main, _BB_DIR_BIN, mkdir_usage},
	#endif
	#ifdef BB_MKFIFO
	{"mkfifo", mkfifo_main, _BB_DIR_USR_BIN, mkfifo_usage},
	#endif
	#ifdef BB_MKFS_MINIX
	{"mkfs.minix", mkfs_minix_main, _BB_DIR_SBIN, mkfs_minix_usage},
	#endif
	#ifdef BB_MKNOD
	{"mknod", mknod_main, _BB_DIR_BIN, mknod_usage},
	#endif
	#ifdef BB_MKSWAP
	{"mkswap", mkswap_main, _BB_DIR_SBIN, mkswap_usage},
	#endif
	#ifdef BB_MKTEMP
	{"mktemp", mktemp_main, _BB_DIR_BIN, mktemp_usage},
	#endif
	#ifdef BB_NC
	{"nc", nc_main, _BB_DIR_USR_BIN, nc_usage},
	#endif
	#ifdef BB_MORE
	{"more", more_main, _BB_DIR_BIN, more_usage},
	#endif
	#ifdef BB_MOUNT
	{"mount", mount_main, _BB_DIR_BIN, mount_usage},
	#endif
	#ifdef BB_MT
	{"mt", mt_main, _BB_DIR_BIN, mt_usage},
	#endif
	#ifdef BB_CP_MV
	{"mv", cp_mv_main, _BB_DIR_BIN, mv_usage},
	#endif
	#ifdef BB_NSLOOKUP
	{"nslookup", nslookup_main, _BB_DIR_USR_BIN, nslookup_usage},
	#endif
	#ifdef BB_PING
	{"ping", ping_main, _BB_DIR_BIN, ping_usage},
	#endif
	#ifdef BB_POWEROFF
	{"poweroff", poweroff_main, _BB_DIR_SBIN, poweroff_usage},
	#endif
	#ifdef BB_PRINTF
	{"printf", printf_main, _BB_DIR_USR_BIN, printf_usage},
	#endif
	#ifdef BB_PS
	{"ps", ps_main, _BB_DIR_BIN, ps_usage},
	#endif
	#ifdef BB_PWD
	{"pwd", pwd_main, _BB_DIR_BIN, pwd_usage},
	#endif
	#ifdef BB_RDATE
	{"rdate", rdate_main, _BB_DIR_USR_BIN, rdate_usage},
	#endif
	#ifdef BB_REBOOT
	{"reboot", reboot_main, _BB_DIR_SBIN, reboot_usage},
	#endif
	#ifdef BB_RENICE
	{"renice", renice_main, _BB_DIR_USR_BIN},
	#endif
	#ifdef BB_RESET
	{"reset", reset_main, _BB_DIR_USR_BIN, reset_usage},
	#endif
	#ifdef BB_RM
	{"rm", rm_main, _BB_DIR_BIN, rm_usage},
	#endif
	#ifdef BB_RMDIR
	{"rmdir", rmdir_main, _BB_DIR_BIN, rmdir_usage},
	#endif
	#ifdef BB_RMMOD
	{"rmmod", rmmod_main, _BB_DIR_SBIN, rmmod_usage},
	#endif
	#ifdef BB_SED
	{"sed", sed_main, _BB_DIR_BIN, sed_usage},
	#endif
	#ifdef BB_SETKEYCODES
	{"setkeycodes", setkeycodes_main, _BB_DIR_USR_BIN, setkeycodes_usage},
	#endif
	#ifdef BB_SH
	{"sh", shell_main, _BB_DIR_BIN, shell_usage},
	#endif
	#ifdef BB_SLEEP
	{"sleep", sleep_main, _BB_DIR_BIN, sleep_usage},
	#endif
	#ifdef BB_SORT
	{"sort", sort_main, _BB_DIR_USR_BIN, sort_usage},
	#endif
	#ifdef BB_SYNC
	{"sync", sync_main, _BB_DIR_BIN, sync_usage},
	#endif
	#ifdef BB_SYSLOGD
	{"syslogd", syslogd_main, _BB_DIR_SBIN, syslogd_usage},
	#endif
	#ifdef BB_SWAPONOFF
	{"swapon", swap_on_off_main, _BB_DIR_SBIN, swapon_usage},
	#endif
	#ifdef BB_SWAPONOFF
	{"swapoff", swap_on_off_main, _BB_DIR_SBIN, swapoff_usage},
	#endif
	#ifdef BB_TAIL
	{"tail", tail_main, _BB_DIR_USR_BIN, tail_usage},
	#endif
	#ifdef BB_TAR
	{"tar", tar_main, _BB_DIR_BIN, tar_usage},
	#endif
	#ifdef BB_TELNET
	{"telnet", telnet_main, _BB_DIR_USR_BIN, telnet_usage},
	#endif
	#ifdef BB_TEST
	{"test", test_main, _BB_DIR_USR_BIN, test_usage},
	#endif
	#ifdef BB_TEE
	{"tee", tee_main, _BB_DIR_USR_BIN, tee_usage},
	#endif
	#ifdef BB_TOUCH
	{"touch", touch_main, _BB_DIR_BIN, touch_usage},
	#endif
	#ifdef BB_TR
	{"tr", tr_main, _BB_DIR_USR_BIN, tr_usage},
	#endif
	#ifdef BB_TRUE_FALSE
	{"true", true_main, _BB_DIR_BIN, true_usage},
	#endif
	#ifdef BB_TTY
	{"tty", tty_main, _BB_DIR_USR_BIN, tty_usage},
	#endif
	#ifdef BB_UMOUNT
	{"umount", umount_main, _BB_DIR_BIN, umount_usage},
	#endif
	#ifdef BB_UNAME
	{"uname", uname_main, _BB_DIR_BIN, uname_usage},
	#endif
	#ifdef BB_UNIQ
	{"uniq", uniq_main, _BB_DIR_USR_BIN, uniq_usage},
	#endif
	#ifdef BB_UPDATE
	{"update", update_main, _BB_DIR_SBIN, update_usage},
	#endif
	#ifdef BB_UPTIME
	{"uptime", uptime_main, _BB_DIR_USR_BIN, uptime_usage},
	#endif
	#ifdef BB_UUENCODE
	{"uuencode", uuencode_main, _BB_DIR_USR_BIN, uuencode_usage},
	#endif
	#ifdef BB_UUDECODE
	{"uudecode", uudecode_main, _BB_DIR_USR_BIN, uudecode_usage},
	#endif
	#ifdef BB_USLEEP
	{"usleep", usleep_main, _BB_DIR_BIN, usleep_usage},
	#endif
	#ifdef BB_WC
	{"wc", wc_main, _BB_DIR_USR_BIN, wc_usage},
	#endif
	#ifdef BB_WHICH
	{"which", which_main, _BB_DIR_USR_BIN, which_usage},
	#endif
	#ifdef BB_WHOAMI
	{"whoami", whoami_main, _BB_DIR_USR_BIN, whoami_usage},
	#endif
	#ifdef BB_YES
	{"yes", yes_main, _BB_DIR_USR_BIN, yes_usage},
	#endif
	#ifdef BB_GUNZIP
	{"zcat", gunzip_main, _BB_DIR_BIN, gunzip_usage},
	#endif
	#ifdef BB_TEST
	{"[", test_main, _BB_DIR_USR_BIN, test_usage},
	#endif
	{0,NULL,0,NULL}
	};

	const char *applet_name;

	#ifdef BB_FEATURE_INSTALLER
	/*
	* directory table
	* this should be consistent w/ the enum, internal.h::Location,
	* or else...
	*/
	static char* install_dir[] = {
	"/",
	"/bin",
	"/sbin",
	"/usr/bin",
	"/usr/sbin",
	};

	/* abstract link() */
	typedef int (__link_f)(const char , const char *);

	/*
	* Where in the filesystem is this busybox?
	* [return]
	* malloc'd string w/ full pathname of busybox's location
	* NULL on failure
	*/
	static char *busybox_fullpath()
	{
	pid_t pid;
	char path[256];
	char proc[256];
	int len;

	pid = getpid();
	sprintf(proc, "/proc/%d/exe", pid);
	len = readlink(proc, path, 256);
	if (len != -1) {
	path[len] = 0;
	} else {
	errorMsg("%s: %s\n", proc, strerror(errno));
	return NULL;
	}
	return strdup(path);
	}

	/* create (sym)links for each applet */
	static int install_links(const char *busybox, int use_symbolic_links)
	{
	__link_f Link = link;

	char command[256];
	int i;
	int rc = 0;

	if (use_symbolic_links) Link = symlink;

	for (i = 0; applets[i].name != NULL; i++) {
	sprintf (
	command,
	"%s/%s",
	install_dir[applets[i].location],
	applets[i].name
	);
	#if 1
	rc \|= Link(busybox, command);
	#else
	puts(command);
	#endif
	if (rc) {
	errorMsg("%s: %s\n", command, strerror(errno));
	}
	}
	return rc;
	}

	#endif /* BB_FEATURE_INSTALLER */


	int main(int argc, char **argv)
	{
	const char *s;
	const struct BB_applet *a = applets;
	applet_name = "busybox";

	#ifdef BB_FEATURE_INSTALLER
	/*
	* This style of argument parsing doesn't scale well
	* in the event that busybox starts wanting more --options.
	* If someone has a cleaner approach, by all means implement it.
	*/
	if (argc > 1 && (strcmp(argv[1], "--install") == 0)) {
	int use_symbolic_links = 0;
	int rc = 0;
	char *busybox;

	/* to use symlinks, or not to use symlinks... */
	if (argc > 2) {
	if ((strcmp(argv[2], "-s") == 0)) {
	use_symbolic_links = 1;
	}
	}

	/* link */
	busybox = busybox_fullpath();
	if (busybox) {
	install_links(busybox, use_symbolic_links);
	free(busybox);
	} else {
	rc = 1;
	}
	return rc;
	}
	#endif /* BB_FEATURE_INSTALLER */

	for (s = applet_name = argv[0]; *s != '\0';) {
	if (*s++ == '/')
	applet_name = s;
	}

	argv = (char)applet_name;

	#ifdef BB_SH
	/* Add in a special case hack -- whenever **argv == '-'
	* (i.e. '-su' or '-sh') always invoke the shell */
	if (*argv == '-' && (*argv+1)!= '-') {
	exit(((*(shell_main)) (argc, argv)));
	}
	#endif

	while (a->name != 0) {
	if (strcmp(applet_name, a->name) == 0) {
	if (a->usage && argv[1] && strcmp(argv[1], "--help") == 0)
	usage(a->usage);
	exit(((*(a->main)) (argc, argv)));
	}
	a++;
	}
	return(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 BB_applet *a = applets;

	fprintf(stderr, "%s\n\n"
	"Usage: busybox [function] [arguments]...\n"
	" or: [function] [arguments]...\n\n"
	"\tBusyBox is a multi-call binary that combines many common Unix\n"
	"\tutilities into a single executable. Most people will create a\n"
	"\tlink to busybox for each function they wish to use, and BusyBox\n"
	"\twill act like whatever it was invoked as.\n"
	"\nCurrently defined functions:\n", full_version);

	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);
	}
	/* 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:
	*/