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hush/applets/busybox.c
Erik Andersen 7ab9c7ee52 Lots of updates. Finished implementing BB_FEATURE_TRIVIAL_HELP 
which lets you compile out most of the "--help" output, saving
up to 17k.

Renamed mnc to nc.
 -Erik
2000-05-12 19:41:47 +00:00

425 lines
8.6 KiB
C
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/* vi: set sw=4 ts=4: */
#include "internal.h"
#include <stdio.h>
#include <string.h>
#include <errno.h>
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
{"basename", basename_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_BUSYBOX
{"busybox", busybox_main, _BB_DIR_BIN},
#endif
#ifdef BB_BLOCK_DEVICE
{"block_device", block_device_main, _BB_DIR_SBIN},
#endif
#ifdef BB_CAT
{"cat", cat_main, _BB_DIR_BIN},
#endif
#ifdef BB_CHMOD_CHOWN_CHGRP
{"chgrp", chmod_chown_chgrp_main, _BB_DIR_BIN},
#endif
#ifdef BB_CHMOD_CHOWN_CHGRP
{"chmod", chmod_chown_chgrp_main, _BB_DIR_BIN},
#endif
#ifdef BB_CHMOD_CHOWN_CHGRP
{"chown", chmod_chown_chgrp_main, _BB_DIR_BIN},
#endif
#ifdef BB_CHROOT
{"chroot", chroot_main, _BB_DIR_SBIN},
#endif
#ifdef BB_CLEAR
{"clear", clear_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_CHVT
{"chvt", chvt_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_CP_MV
{"cp", cp_mv_main, _BB_DIR_BIN},
#endif
#ifdef BB_CUT
{"cut", cut_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_DATE
{"date", date_main, _BB_DIR_BIN},
#endif
#ifdef BB_DD
{"dd", dd_main, _BB_DIR_BIN},
#endif
#ifdef BB_DF
{"df", df_main, _BB_DIR_BIN},
#endif
#ifdef BB_DIRNAME
{"dirname", dirname_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_DMESG
{"dmesg", dmesg_main, _BB_DIR_BIN},
#endif
#ifdef BB_DU
{"du", du_main, _BB_DIR_BIN},
#endif
#ifdef BB_DUTMP
{"dutmp", dutmp_main, _BB_DIR_USR_SBIN},
#endif
#ifdef BB_ECHO
{"echo", echo_main, _BB_DIR_BIN},
#endif
#ifdef BB_TRUE_FALSE
{"false", false_main, _BB_DIR_BIN},
#endif
#ifdef BB_FBSET
{"fbset", fbset_main, _BB_DIR_USR_SBIN},
#endif
#ifdef BB_FDFLUSH
{"fdflush", fdflush_main, _BB_DIR_BIN},
#endif
#ifdef BB_FIND
{"find", find_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_FREE
{"free", free_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_FREERAMDISK
{"freeramdisk", freeramdisk_main, _BB_DIR_SBIN},
#endif
#ifdef BB_DEALLOCVT
{"deallocvt", deallocvt_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_FSCK_MINIX
{"fsck.minix", fsck_minix_main, _BB_DIR_SBIN},
#endif
#ifdef BB_GREP
{"grep", grep_main, _BB_DIR_BIN},
#endif
#ifdef BB_GUNZIP
{"gunzip", gunzip_main, _BB_DIR_BIN},
#endif
#ifdef BB_GZIP
{"gzip", gzip_main, _BB_DIR_BIN},
#endif
#ifdef BB_HALT
{"halt", halt_main, _BB_DIR_SBIN},
#endif
#ifdef BB_HEAD
{"head", head_main, _BB_DIR_BIN},
#endif
#ifdef BB_HOSTID
{"hostid", hostid_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_HOSTNAME
{"hostname", hostname_main, _BB_DIR_BIN},
#endif
#ifdef BB_ID
{"id", id_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_INIT
{"init", init_main, _BB_DIR_SBIN},
#endif
#ifdef BB_INSMOD
{"insmod", insmod_main, _BB_DIR_SBIN},
#endif
#ifdef BB_KILL
{"kill", kill_main, _BB_DIR_BIN},
#endif
#ifdef BB_KILLALL
{"killall", kill_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_LENGTH
{"length", length_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_LINUXRC
{"linuxrc", init_main, _BB_DIR_ROOT},
#endif
#ifdef BB_LN
{"ln", ln_main, _BB_DIR_BIN},
#endif
#ifdef BB_LOADACM
{"loadacm", loadacm_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_LOADFONT
{"loadfont", loadfont_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_LOADKMAP
{"loadkmap", loadkmap_main, _BB_DIR_SBIN},
#endif
#ifdef BB_LOGGER
{"logger", logger_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_LOGNAME
{"logname", logname_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_LS
{"ls", ls_main, _BB_DIR_BIN},
#endif
#ifdef BB_LSMOD
{"lsmod", lsmod_main, _BB_DIR_SBIN},
#endif
#ifdef BB_MAKEDEVS
{"makedevs", makedevs_main, _BB_DIR_SBIN},
#endif
#ifdef BB_MATH
{"math", math_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_MKDIR
{"mkdir", mkdir_main, _BB_DIR_BIN},
#endif
#ifdef BB_MKFIFO
{"mkfifo", mkfifo_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_MKFS_MINIX
{"mkfs.minix", mkfs_minix_main, _BB_DIR_SBIN},
#endif
#ifdef BB_MKNOD
{"mknod", mknod_main, _BB_DIR_BIN},
#endif
#ifdef BB_MKSWAP
{"mkswap", mkswap_main, _BB_DIR_SBIN},
#endif
#ifdef BB_MKTEMP
{"mktemp", mktemp_main, _BB_DIR_BIN},
#endif
#ifdef BB_NC
{"nc", nc_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_MORE
{"more", more_main, _BB_DIR_BIN},
#endif
#ifdef BB_MOUNT
{"mount", mount_main, _BB_DIR_BIN},
#endif
#ifdef BB_MT
{"mt", mt_main, _BB_DIR_BIN},
#endif
#ifdef BB_CP_MV
{"mv", cp_mv_main, _BB_DIR_BIN},
#endif
#ifdef BB_NSLOOKUP
{"nslookup", nslookup_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_PING
{"ping", ping_main, _BB_DIR_BIN},
#endif
#ifdef BB_POWEROFF
{"poweroff", poweroff_main, _BB_DIR_SBIN},
#endif
#ifdef BB_PRINTF
{"printf", printf_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_PS
{"ps", ps_main, _BB_DIR_BIN},
#endif
#ifdef BB_PWD
{"pwd", pwd_main, _BB_DIR_BIN},
#endif
#ifdef BB_REBOOT
{"reboot", reboot_main, _BB_DIR_SBIN},
#endif
#ifdef BB_RM
{"rm", rm_main, _BB_DIR_BIN},
#endif
#ifdef BB_RMDIR
{"rmdir", rmdir_main, _BB_DIR_BIN},
#endif
#ifdef BB_RMMOD
{"rmmod", rmmod_main, _BB_DIR_SBIN},
#endif
#ifdef BB_SED
{"sed", sed_main, _BB_DIR_BIN},
#endif
#ifdef BB_SETKEYCODES
{"setkeycodes", setkeycodes_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_SFDISK
{"sfdisk", sfdisk_main, _BB_DIR_SBIN},
#endif
#ifdef BB_SH
{"sh", shell_main, _BB_DIR_BIN},
#endif
#ifdef BB_SLEEP
{"sleep", sleep_main, _BB_DIR_BIN},
#endif
#ifdef BB_SORT
{"sort", sort_main, _BB_DIR_BIN},
#endif
#ifdef BB_SYNC
{"sync", sync_main, _BB_DIR_BIN},
#endif
#ifdef BB_SYSLOGD
{"syslogd", syslogd_main, _BB_DIR_SBIN},
#endif
#ifdef BB_SWAPONOFF
{"swapon", swap_on_off_main, _BB_DIR_SBIN},
#endif
#ifdef BB_SWAPONOFF
{"swapoff", swap_on_off_main, _BB_DIR_SBIN},
#endif
#ifdef BB_TAIL
{"tail", tail_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_TAR
{"tar", tar_main, _BB_DIR_BIN},
#endif
#ifdef BB_TELNET
{"telnet", telnet_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_TEST
{"test", test_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_TEE
{"tee", tee_main, _BB_DIR_BIN},
#endif
#ifdef BB_TOUCH
{"touch", touch_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_TR
{"tr", tr_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_TRUE_FALSE
{"true", true_main, _BB_DIR_BIN},
#endif
#ifdef BB_TTY
{"tty", tty_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_UMOUNT
{"umount", umount_main, _BB_DIR_BIN},
#endif
#ifdef BB_UNAME
{"uname", uname_main, _BB_DIR_BIN},
#endif
#ifdef BB_UNIQ
{"uniq", uniq_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_UPDATE
{"update", update_main, _BB_DIR_SBIN},
#endif
#ifdef BB_UPTIME
{"uptime", uptime_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_USLEEP
{"usleep", usleep_main, _BB_DIR_BIN},
#endif
#ifdef BB_WC
{"wc", wc_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_WHOAMI
{"whoami", whoami_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_YES
{"yes", yes_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_GUNZIP
{"zcat", gunzip_main, _BB_DIR_BIN},
#endif
#ifdef BB_TEST
{"[", test_main, _BB_DIR_USR_BIN},
#endif
{0}
};
int main(int argc, char **argv)
{
char *s;
char *name;
const struct Applet *a = applets;
for (s = name = argv[0]; *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,
"\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");
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:
*/
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