busybox/busybox.c
Eric Andersen e6b9dfa967 Removed sfdisk from BusyBox. It was buggy, fat, and we really couldn't
maintain it very well, so including it was not very appropriate.  Those wanting
an fdisk are invited to grab a copy from util-linux.
 -Erik
2000-07-07 20:54:30 +00:00

536 lines
11 KiB
C

/* 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
const struct BB_applet applets[] = {
#ifdef BB_AR
{"ar", ar_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_BASENAME
{"basename", basename_main, _BB_DIR_USR_BIN},
#endif
{"busybox", busybox_main, _BB_DIR_BIN},
#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_DC
{"dc", dc_main, _BB_DIR_USR_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_MD5SUM
{"md5sum", md5sum_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_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_UUENCODE
{"uuencode", uuencode_main, _BB_DIR_USR_BIN},
#endif
#ifdef BB_UUDECODE
{"uudecode", uudecode_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_WHICH
{"which", which_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}
};
#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 {
fprintf(stderr, "busybox : %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) {
fprintf(stderr,"busybox : %s : %s\n", command, strerror(errno));
}
}
return rc;
}
#if 0
int uninstall_links() ?
#endif
#endif /* BB_FEATURE_INSTALLER */
int main(int argc, char **argv)
{
char *s;
char *name;
const struct BB_applet *a = applets;
#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 = name = argv[0]; *s != '\0';) {
if (*s++ == '/')
name = s;
}
*argv = name;
#ifdef BB_SH
/* Add in a special case hack -- whenever **argv == '-'
* (i.e. '-su' or '-sh') always invoke the shell */
if (**argv == '-')
exit(((*(shell_main)) (argc, argv)));
#endif
while (a->name != 0) {
if (strcmp(name, a->name) == 0) {
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, "BusyBox v%s (%s) multi-call binary -- GPL2\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", BB_VER, BB_BT);
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:
*/