X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=applets%2Fbusybox.c;h=0c291d0c510c58e46b1b6a4402df937c01226a3c;hb=0010ee45e37a66be737617a3356368ec9a914f71;hp=9986af3890eda31dc47775f5685b5c15f42f4679;hpb=4bea32abb5d25e3b83047c22fd3f4e8fae2479cd;p=oweals%2Fbusybox.git diff --git a/applets/busybox.c b/applets/busybox.c index 9986af389..0c291d0c5 100644 --- a/applets/busybox.c +++ b/applets/busybox.c @@ -1,228 +1,545 @@ +/* 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; -static const struct Applet applets[] = { +/* 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_BUSYBOX //bin - {"busybox", busybox_main}, +#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_BLOCK_DEVICE //sbin - {"block_device", block_device_main}, +#ifdef BB_LN + {"ln", ln_main, _BB_DIR_BIN, ln_usage}, #endif -#ifdef BB_CAT //bin - {"cat", cat_more_main}, +#ifdef BB_LOADACM + {"loadacm", loadacm_main, _BB_DIR_USR_BIN, loadacm_usage}, #endif -#ifdef BB_CHMOD //bin - {"chmod", chmod_main}, +#ifdef BB_LOADFONT + {"loadfont", loadfont_main, _BB_DIR_USR_BIN, loadfont_usage}, #endif -#ifdef BB_CHOWN //bin - {"chown", chown_main}, - {"chgrp", chown_main}, +#ifdef BB_LOADKMAP + {"loadkmap", loadkmap_main, _BB_DIR_SBIN, loadkmap_usage}, #endif -#ifdef BB_CHROOT //sbin - {"chroot", chroot_main}, +#ifdef BB_LOGGER + {"logger", logger_main, _BB_DIR_USR_BIN, logger_usage}, #endif -#ifdef BB_CLEAR //usr/bin - {"clear", clear_main}, +#ifdef BB_LOGNAME + {"logname", logname_main, _BB_DIR_USR_BIN, logname_usage}, #endif -#ifdef BB_CP //bin - {"cp", dyadic_main}, +#ifdef BB_LS + {"ls", ls_main, _BB_DIR_BIN, ls_usage}, #endif -#ifdef BB_DATE //bin - {"date", date_main}, +#ifdef BB_LSMOD + {"lsmod", lsmod_main, _BB_DIR_SBIN, lsmod_usage}, #endif -#ifdef BB_DD //bin - {"dd", dd_main}, +#ifdef BB_MAKEDEVS + {"makedevs", makedevs_main, _BB_DIR_SBIN, makedevs_usage}, #endif -#ifdef BB_DF //bin - {"df", df_main}, +#ifdef BB_MD5SUM + {"md5sum", md5sum_main, _BB_DIR_USR_BIN, md5sum_usage}, #endif -#ifdef BB_DMESG //bin - {"dmesg", dmesg_main}, +#ifdef BB_MKDIR + {"mkdir", mkdir_main, _BB_DIR_BIN, mkdir_usage}, #endif -#ifdef BB_DUTMP //usr/sbin - {"dutmp", cat_more_main}, +#ifdef BB_MKFIFO + {"mkfifo", mkfifo_main, _BB_DIR_USR_BIN, mkfifo_usage}, #endif -#ifdef BB_FALSE //bin - {"false", false_main}, +#ifdef BB_MKFS_MINIX + {"mkfs.minix", mkfs_minix_main, _BB_DIR_SBIN, mkfs_minix_usage}, #endif -#ifdef BB_FDFLUSH //bin - {"fdflush", monadic_main}, +#ifdef BB_MKNOD + {"mknod", mknod_main, _BB_DIR_BIN, mknod_usage}, #endif -#ifdef BB_FIND //usr/bin - {"find", find_main}, +#ifdef BB_MKSWAP + {"mkswap", mkswap_main, _BB_DIR_SBIN, mkswap_usage}, #endif -#ifdef BB_GREP //bin - {"grep", grep_main}, +#ifdef BB_MKTEMP + {"mktemp", mktemp_main, _BB_DIR_BIN, mktemp_usage}, #endif -#ifdef BB_HALT //sbin - {"halt", halt_main}, +#ifdef BB_NC + {"nc", nc_main, _BB_DIR_USR_BIN, nc_usage}, #endif -#ifdef BB_INIT //sbin - {"init", init_main}, +#ifdef BB_MORE + {"more", more_main, _BB_DIR_BIN, more_usage}, #endif -#ifdef BB_KILL //bin - {"kill", kill_main}, +#ifdef BB_MOUNT + {"mount", mount_main, _BB_DIR_BIN, mount_usage}, #endif -#ifdef BB_LENGTH //usr/bin - {"length", length_main}, +#ifdef BB_MT + {"mt", mt_main, _BB_DIR_BIN, mt_usage}, #endif -#ifdef BB_LN //bin - {"ln", dyadic_main}, +#ifdef BB_CP_MV + {"mv", cp_mv_main, _BB_DIR_BIN, mv_usage}, #endif -#ifdef BB_LOADKMAP //sbin - {"loadkmap", loadkmap_main}, +#ifdef BB_NSLOOKUP + {"nslookup", nslookup_main, _BB_DIR_USR_BIN, nslookup_usage}, #endif -#ifdef BB_LOSETUP //sbin - {"losetup", losetup_main}, +#ifdef BB_PING + {"ping", ping_main, _BB_DIR_BIN, ping_usage}, #endif -#ifdef BB_LS //bin - {"ls", ls_main}, +#ifdef BB_POWEROFF + {"poweroff", poweroff_main, _BB_DIR_SBIN, poweroff_usage}, #endif -#ifdef BB_MAKEDEVS //sbin - {"makedevs", makedevs_main}, +#ifdef BB_PRINTF + {"printf", printf_main, _BB_DIR_USR_BIN, printf_usage}, #endif -#ifdef BB_MATH //usr/bin - {"math", math_main}, +#ifdef BB_PS + {"ps", ps_main, _BB_DIR_BIN, ps_usage}, #endif -#ifdef BB_MKDIR //bin - {"mkdir", monadic_main}, +#ifdef BB_PWD + {"pwd", pwd_main, _BB_DIR_BIN, pwd_usage}, #endif -#ifdef BB_MKNOD //bin - {"mknod", mknod_main}, +#ifdef BB_REBOOT + {"reboot", reboot_main, _BB_DIR_SBIN, reboot_usage}, #endif -#ifdef BB_MKSWAP //sbin - {"mkswap", mkswap_main}, +#ifdef BB_RM + {"rm", rm_main, _BB_DIR_BIN, rm_usage}, #endif -#ifdef BB_MNC //usr/bin - {"mnc", mnc_main}, +#ifdef BB_RMDIR + {"rmdir", rmdir_main, _BB_DIR_BIN, rmdir_usage}, #endif -#ifdef BB_MORE //bin - {"more", more_main}, +#ifdef BB_RMMOD + {"rmmod", rmmod_main, _BB_DIR_SBIN, rmmod_usage}, #endif -#ifdef BB_MOUNT //bin - {"mount", mount_main}, +#ifdef BB_SED + {"sed", sed_main, _BB_DIR_BIN, sed_usage}, #endif -#ifdef BB_MT //bin - {"mt", mt_main}, +#ifdef BB_SETKEYCODES + {"setkeycodes", setkeycodes_main, _BB_DIR_USR_BIN, setkeycodes_usage}, #endif -#ifdef BB_MV //bin - {"mv", dyadic_main}, +#ifdef BB_SH + {"sh", shell_main, _BB_DIR_BIN, shell_usage}, #endif -#ifdef BB_PRINTF //usr/bin - {"printf", printf_main}, +#ifdef BB_SLEEP + {"sleep", sleep_main, _BB_DIR_BIN, sleep_usage}, #endif -#ifdef BB_PWD //bin - {"pwd", pwd_main}, +#ifdef BB_SORT + {"sort", sort_main, _BB_DIR_BIN, sort_usage}, #endif -#ifdef BB_REBOOT //sbin - {"reboot", reboot_main}, +#ifdef BB_SYNC + {"sync", sync_main, _BB_DIR_BIN, sync_usage}, #endif -#ifdef BB_RM //bin - {"rm", rm_main}, +#ifdef BB_SYSLOGD + {"syslogd", syslogd_main, _BB_DIR_SBIN, syslogd_usage}, #endif -#ifdef BB_RMDIR //bin - {"rmdir", monadic_main}, +#ifdef BB_SWAPONOFF + {"swapon", swap_on_off_main, _BB_DIR_SBIN, swapon_usage}, #endif -#ifdef BB_SLEEP //bin - {"sleep", sleep_main}, +#ifdef BB_SWAPONOFF + {"swapoff", swap_on_off_main, _BB_DIR_SBIN, swapoff_usage}, #endif -#ifdef BB_TAR //bin - {"tar", tar_main}, +#ifdef BB_TAIL + {"tail", tail_main, _BB_DIR_USR_BIN, tail_usage}, #endif -#ifdef BB_SWAPOFF //sbin - {"swapoff", monadic_main}, +#ifdef BB_TAR + {"tar", tar_main, _BB_DIR_BIN, tar_usage}, #endif -#ifdef BB_SWAPON //sbin - {"swapon", monadic_main}, +#ifdef BB_TELNET + {"telnet", telnet_main, _BB_DIR_USR_BIN, telnet_usage}, #endif -#ifdef BB_SYNC //bin - {"sync", sync_main}, +#ifdef BB_TEST + {"test", test_main, _BB_DIR_USR_BIN, test_usage}, #endif -#ifdef BB_TOUCH //usr/bin - {"touch", monadic_main}, +#ifdef BB_TEE + {"tee", tee_main, _BB_DIR_BIN, tee_usage}, #endif -#ifdef BB_TRUE //bin - {"true", true_main}, +#ifdef BB_TOUCH + {"touch", touch_main, _BB_DIR_USR_BIN, touch_usage}, #endif -#ifdef BB_UMOUNT //bin - {"umount", umount_main}, +#ifdef BB_TR + {"tr", tr_main, _BB_DIR_USR_BIN, tr_usage}, #endif -#ifdef BB_UPDATE //sbin - {"update", update_main}, +#ifdef BB_TRUE_FALSE + {"true", true_main, _BB_DIR_BIN, true_usage}, #endif -#ifdef BB_ZCAT //bin - {"zcat", zcat_main}, - {"gunzip", zcat_main}, +#ifdef BB_TTY + {"tty", tty_main, _BB_DIR_USR_BIN, tty_usage}, #endif -#ifdef BB_GZIP //bin - {"gzip", gzip_main}, +#ifdef BB_UMOUNT + {"umount", umount_main, _BB_DIR_BIN, umount_usage}, #endif - {0} +#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} }; -int main(int argc, char **argv) +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() { - char *s = argv[0]; - char *name = argv[0]; - const struct Applet *a = applets; - - while (*s != '\0') { - if (*s++ == '/') - name = s; - } - - 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); + 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; } - a++; - } - return (busybox_main(argc, argv)); + return strdup(path); } +/* create (sym)links for each applet */ +static int install_links(const char *busybox, int use_symbolic_links) +{ + __link_f Link = link; -int busybox_main(int argc, char **argv) + 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) { - argc--; - argv++; - - /* If we've already been here once, exit now */ - if (been_there_done_that == 1) - return -1; - been_there_done_that = 1; - - if (argc < 1) { - const struct Applet *a = applets; - fprintf(stderr, "BusyBox v%s (%s) multi-call binary -- GPL2\n", - BB_VER, BB_BT); - fprintf(stderr, "Usage: busybox [function] [arguments]...\n"); - fprintf(stderr, - "\n\tMost people will create a symlink to busybox for each\n" - "\tfunction name, and busybox will act like whatever you invoke it as.\n"); - fprintf(stderr, "\nCurrently defined functions:\n"); - - if (a->name != 0) { - fprintf(stderr, "%s", a->name); - a++; + 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 == '-') + exit(((*(shell_main)) (argc, argv))); +#endif + while (a->name != 0) { - fprintf(stderr, ", %s", a->name); - a++; + 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); } - 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: +*/