busybox/busybox.c

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