/* vi: set sw=4 ts=4: */ #include "internal.h" #include #include #include #define bb_need_full_version #define BB_DECLARE_EXTERN #include "messages.c" 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, 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_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_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_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_REBOOT {"reboot", reboot_main, _BB_DIR_SBIN, reboot_usage}, #endif #ifdef BB_RENICE {"renice", renice_main, _BB_DIR_USR_BIN}, #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_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_BIN, tee_usage}, #endif #ifdef BB_TOUCH {"touch", touch_main, _BB_DIR_USR_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} }; 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; } #if 0 int uninstall_links() ? #endif #endif /* BB_FEATURE_INSTALLER */ int main(int argc, char **argv) { 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 = 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: */