X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=applets%2Fbusybox.c;h=833e8d37292ccb8fa603aa43d311182692a256b8;hb=f51d2069ff3a38be49a86212e1d62f2fd89c5943;hp=36cf0a05cc5ac16f00181c3d536e6764265971ee;hpb=fb002d0df02ce53e8bcc03fe6e451b250b4d519e;p=oweals%2Fbusybox.git diff --git a/applets/busybox.c b/applets/busybox.c index 36cf0a05c..833e8d372 100644 --- a/applets/busybox.c +++ b/applets/busybox.c @@ -1,380 +1,151 @@ /* vi: set sw=4 ts=4: */ -#include "internal.h" #include #include +#include #include - -#ifndef BB_INIT -#undef BB_FEATURE_LINUXRC +#include +#include "busybox.h" +#if ENABLE_LOCALE_SUPPORT +#include +#else +#define setlocale(x,y) #endif -static int been_there_done_that = 0; +const char *bb_applet_name; -/* 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 +#ifdef CONFIG_FEATURE_INSTALLER +/* + * directory table + * this should be consistent w/ the enum, busybox.h::Location, + * or else... */ -#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 //usr/bin/basename - {"basename", basename_main}, -#endif -#ifdef BB_BUSYBOX //bin - {"busybox", busybox_main}, -#endif -#ifdef BB_BLOCK_DEVICE //sbin - {"block_device", block_device_main}, -#endif -#ifdef BB_CAT //bin - {"cat", cat_main}, -#endif -#ifdef BB_CHMOD_CHOWN_CHGRP //bin - {"chmod", chmod_chown_chgrp_main}, - {"chown", chmod_chown_chgrp_main}, - {"chgrp", chmod_chown_chgrp_main}, -#endif -#ifdef BB_CHROOT //sbin - {"chroot", chroot_main}, -#endif -#ifdef BB_CLEAR //usr/bin - {"clear", clear_main}, -#endif -#ifdef BB_CHVT //usr/bin - {"chvt", chvt_main}, -#endif -#ifdef BB_CP_MV //bin - {"cp", cp_mv_main}, - {"mv", cp_mv_main}, -#endif -#ifdef BB_DATE //bin - {"date", date_main}, -#endif -#ifdef BB_DD //bin - {"dd", dd_main}, -#endif -#ifdef BB_DF //bin - {"df", df_main}, -#endif -#ifdef BB_DIRNAME //usr/bin - {"dirname", dirname_main}, -#endif -#ifdef BB_DMESG //bin - {"dmesg", dmesg_main}, -#endif -#ifdef BB_DU //bin - {"du", du_main}, -#endif -#ifdef BB_DUTMP //usr/sbin - {"dutmp", dutmp_main}, -#endif -#ifdef BB_FBSET //usr/sbin - {"fbset", fbset_main}, -#endif -#ifdef BB_FDFLUSH //bin - {"fdflush", fdflush_main}, -#endif -#ifdef BB_FIND //usr/bin - {"find", find_main}, -#endif -#ifdef BB_FREE //usr/bin - {"free", free_main}, -#endif -#ifdef BB_FREERAMDISK //sbin - {"freeramdisk", freeramdisk_main}, -#endif -#ifdef BB_DEALLOCVT //usr/bin - {"deallocvt", deallocvt_main}, -#endif -#ifdef BB_FSCK_MINIX //sbin - {"fsck.minix", fsck_minix_main}, -#endif -#ifdef BB_MKFS_MINIX //sbin - {"mkfs.minix", mkfs_minix_main}, -#endif -#ifdef BB_GREP //bin - {"grep", grep_main}, -#endif -#ifdef BB_HALT //sbin - {"halt", halt_main}, -#endif -#ifdef BB_HEAD //bin - {"head", head_main}, -#endif -#ifdef BB_HOSTID //usr/bin - {"hostid", hostid_main}, -#endif -#ifdef BB_HOSTNAME //bin - {"hostname", hostname_main}, -#endif -#ifdef BB_INIT //sbin - {"init", init_main}, -#endif -#ifdef BB_INSMOD //sbin - {"insmod", insmod_main}, -#endif -#ifdef BB_FEATURE_LINUXRC // - {"linuxrc", init_main}, -#endif -#ifdef BB_KILL //bin - {"kill", kill_main}, -#endif -#ifdef BB_LENGTH //usr/bin - {"length", length_main}, -#endif -#ifdef BB_LN //bin - {"ln", ln_main}, -#endif -#ifdef BB_LOADACM //usr/bin - {"loadacm", loadacm_main}, -#endif -#ifdef BB_LOADFONT //usr/bin - {"loadfont", loadfont_main}, -#endif -#ifdef BB_LOADKMAP //sbin - {"loadkmap", loadkmap_main}, -#endif -#ifdef BB_LS //bin - {"ls", ls_main}, -#endif -#ifdef BB_LSMOD //sbin - {"lsmod", lsmod_main}, -#endif -#ifdef BB_MAKEDEVS //sbin - {"makedevs", makedevs_main}, -#endif -#ifdef BB_MATH //usr/bin - {"math", math_main}, -#endif -#ifdef BB_MKDIR //bin - {"mkdir", mkdir_main}, -#endif -#ifdef BB_MKFIFO //usr/bin - {"mkfifo", mkfifo_main}, -#endif -#ifdef BB_MKNOD //bin - {"mknod", mknod_main}, -#endif -#ifdef BB_MKSWAP //sbin - {"mkswap", mkswap_main}, -#endif -#ifdef BB_MNC //usr/bin - {"mnc", mnc_main}, -#endif -#ifdef BB_MORE //bin - {"more", more_main}, -#endif -#ifdef BB_MOUNT //bin - {"mount", mount_main}, -#endif -#ifdef BB_MT //bin - {"mt", mt_main}, -#endif -#ifdef BB_NSLOOKUP //usr/bin - {"nslookup", nslookup_main}, -#endif -#ifdef BB_PING //bin - {"ping", ping_main}, -#endif -#ifdef BB_POWEROFF //sbin - {"poweroff", poweroff_main}, -#endif -#ifdef BB_PRINTF //usr/bin - {"printf", printf_main}, -#endif -#ifdef BB_PS //bin - {"ps", ps_main}, -#endif -#ifdef BB_PWD //bin - {"pwd", pwd_main}, -#endif -#ifdef BB_REBOOT //sbin - {"reboot", reboot_main}, -#endif -#ifdef BB_RM //bin - {"rm", rm_main}, -#endif -#ifdef BB_RMDIR //bin - {"rmdir", rmdir_main}, -#endif -#ifdef BB_RMMOD //sbin - {"rmmod", rmmod_main}, -#endif -#ifdef BB_SFDISK //sbin - {"fdisk", sfdisk_main}, - {"sfdisk", sfdisk_main}, -#endif -#ifdef BB_SED //bin - {"sed", sed_main}, -#endif -#ifdef BB_SLEEP //bin - {"sleep", sleep_main}, -#endif -#ifdef BB_SORT //bin - {"sort", sort_main}, -#endif -#ifdef BB_SYNC //bin - {"sync", sync_main}, -#endif -#ifdef BB_SYSLOGD //sbin - {"syslogd", syslogd_main}, -#endif -#ifdef BB_LOGGER //usr/bin - {"logger", logger_main}, -#endif -#ifdef BB_LOGNAME //usr/bin - {"logname", logname_main}, -#endif -#ifdef BB_SWAPONOFF //sbin - {"swapon", swap_on_off_main}, - {"swapoff", swap_on_off_main}, -#endif -#ifdef BB_TAIL //usr/bin - {"tail", tail_main}, -#endif -#ifdef BB_TAR //bin - {"tar", tar_main}, -#endif -#ifdef BB_TELNET //usr/bin - {"telnet", telnet_main}, -#endif -#ifdef BB_TEE //bin - {"tee", tee_main}, -#endif -#ifdef BB_TOUCH //usr/bin - {"touch", touch_main}, -#endif -#ifdef BB_TR //usr/bin - {"tr", tr_main}, -#endif -#ifdef BB_TRUE_FALSE //bin - {"true", true_main}, - {"false", false_main}, -#endif -#ifdef BB_TTY //usr/bin - {"tty", tty_main}, -#endif -#ifdef BB_UMOUNT //bin - {"umount", umount_main}, -#endif -#ifdef BB_UNAME //bin - {"uname", uname_main}, -#endif -#ifdef BB_UPTIME //usr/bin - {"uptime", uptime_main}, -#endif -#ifdef BB_UNIQ //bin - {"uniq", uniq_main}, -#endif -#ifdef BB_UPDATE //sbin - {"update", update_main}, -#endif -#ifdef BB_WC //usr/bin - {"wc", wc_main}, -#endif -#ifdef BB_WHOAMI //usr/bin - {"whoami", whoami_main}, -#endif -#ifdef BB_YES //usr/bin - {"yes", yes_main}, -#endif -#ifdef BB_GUNZIP //bin - {"zcat", gunzip_main}, - {"gunzip", gunzip_main}, -#endif -#ifdef BB_GZIP //bin - {"gzip", gzip_main}, -#endif - {0} +static const char usr_bin [] ="/usr/bin"; +static const char usr_sbin[] ="/usr/sbin"; + +static const char* const install_dir[] = { + &usr_bin [8], /* "", equivalent to "/" for concat_path_file() */ + &usr_bin [4], /* "/bin" */ + &usr_sbin[4], /* "/sbin" */ + usr_bin, + usr_sbin }; +/* abstract link() */ +typedef int (*__link_f)(const char *, const char *); - -int main(int argc, char **argv) +/* create (sym)links for each applet */ +static void install_links(const char *busybox, int use_symbolic_links) { - char *s = argv[0]; - char *name = argv[0]; - const struct Applet *a = applets; - - while (*s != '\0') { - if (*s++ == '/') - name = s; - } + __link_f Link = link; - *argv = name; + char *fpc; + int i; + int rc; - while (a->name != 0) { - if (strcmp(name, a->name) == 0) { - int status; + if (use_symbolic_links) + Link = symlink; - status = ((*(a->main)) (argc, argv)); - if (status < 0) { - fprintf(stderr, "%s: %s\n", a->name, strerror(errno)); - } - fprintf(stderr, "\n"); - exit(status); + for (i = 0; applets[i].name != NULL; i++) { + fpc = concat_path_file( + install_dir[applets[i].location], applets[i].name); + rc = Link(busybox, fpc); + if (rc!=0 && errno!=EEXIST) { + bb_perror_msg("%s", fpc); } - a++; + free(fpc); } - exit(busybox_main(argc, argv)); } +#else +#define install_links(x,y) +#endif /* CONFIG_FEATURE_INSTALLER */ -int busybox_main(int argc, char **argv) +int main(int argc, char **argv) { - int col = 0; + const char *s; - argc--; - argv++; + bb_applet_name=argv[0]; + if (*bb_applet_name == '-') bb_applet_name++; + for (s = bb_applet_name; *s ;) + if (*(s++) == '/') bb_applet_name = s; - if (been_there_done_that == 1 || argc < 1) { - const struct Applet *a = applets; + /* Set locale for everybody except `init' */ + if(ENABLE_LOCALE_SUPPORT && (!ENABLE_INIT || getpid()==1)) + setlocale(LC_ALL, ""); - 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"); + run_applet_by_name(bb_applet_name, argc, argv); + bb_error_msg_and_die("applet not found"); +} - 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; +int busybox_main(int argc, char **argv) +{ + /* + * 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 (ENABLE_FEATURE_INSTALLER && argc > 1 && !strcmp(argv[1], "--install")) { + 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; } } - 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)); + + /* link */ + busybox = xreadlink("/proc/self/exe"); + if (busybox) { + install_links(busybox, use_symbolic_links); + free(busybox); + } else { + rc = 1; + } + return rc; } + + /* Deal with --help. (Also print help when called with no arguments) */ + + if (argc==1 || !strcmp(argv[1],"--help") ) { + if (argc>2) { + run_applet_by_name(bb_applet_name=argv[2], 2, argv); + } else { + const struct BB_applet *a; + int col, output_width; + + if (ENABLE_FEATURE_AUTOWIDTH) { + /* Obtain the terminal width. */ + get_terminal_width_height(0, &output_width, NULL); + /* leading tab and room to wrap */ + output_width -= 20; + } else output_width = 60; + + printf("%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", bb_msg_full_version); + + col=0; + for(a = applets; a->name;) { + col += printf("%s%s", (col ? ", " : "\t"), (a++)->name); + if (col > output_width && a->name) { + printf(",\n"); + col = 0; + } + } + printf("\n\n"); + exit(0); + } + } else run_applet_by_name(bb_applet_name=argv[1], argc-1, argv+1); + + bb_error_msg_and_die("applet not found"); } /*