/* vi: set sw=4 ts=4: */
-#include "internal.h"
+#include "busybox.h"
#include <stdio.h>
#include <string.h>
#include <errno.h>
+#undef APPLET
+#undef APPLET_NOUSAGE
+#undef PROTOTYPES
+#include "applets.h"
+
+#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
+
+const char *applet_name;
+
+#ifdef BB_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);
+static char* install_dir[] = {
+ "/",
+ "/bin",
+ "/sbin",
+ "/usr/bin",
+ "/usr/sbin",
};
-void abort(void) __attribute__ ((__noreturn__));
-void abort(void)
+
+/* 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()
{
- _exit(0);
-};
-int atexit(void (*__func) (void))
+ 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 {
+ error_msg("%s: %s\n", proc, strerror(errno));
+ return NULL;
+ }
+ return strdup(path);
+}
+
+/* create (sym)links for each applet */
+static void install_links(const char *busybox, int use_symbolic_links)
{
- _exit(0);
-};
-void *__libc_stack_end;
-#endif
+ __link_f Link = link;
-static const struct Applet applets[] = {
+ char command[256];
+ int i;
+ int rc;
-#ifdef BB_BASENAME
- {"basename", basename_main, _BB_DIR_USR_BIN},
-#endif
-#ifdef BB_BUSYBOX
- {"busybox", busybox_main, _BB_DIR_BIN},
-#endif
-#ifdef BB_BLOCK_DEVICE
- {"block_device", block_device_main, _BB_DIR_SBIN},
-#endif
-#ifdef BB_CAT
- {"cat", cat_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_CHMOD_CHOWN_CHGRP
- {"chgrp", 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_CP_MV
- {"mv", cp_mv_main, _BB_DIR_BIN},
-#endif
-#ifdef BB_DATE
- {"date", date_main, _BB_DIR_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_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_MKFS_MINIX
- {"mkfs.minix", mkfs_minix_main, _BB_DIR_SBIN},
-#endif
-#ifdef BB_GREP
- {"grep", grep_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_INIT
- {"init", init_main, _BB_DIR_SBIN},
-#endif
-#ifdef BB_INSMOD
- {"insmod", insmod_main, _BB_DIR_SBIN},
-#endif
-#ifdef BB_FEATURE_LINUXRC //
- {"linuxrc", init_main, _BB_DIR_ROOT},
-#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_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_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_MATH
- {"math", math_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_MKNOD
- {"mknod", mknod_main, _BB_DIR_BIN},
-#endif
-#ifdef BB_MKSWAP
- {"mkswap", mkswap_main, _BB_DIR_SBIN},
-#endif
-#ifdef BB_MNC
- {"mnc", mnc_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_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_SH
- {"sh", shell_main, _BB_DIR_BIN},
-#endif
-#ifdef BB_SFDISK
- {"fdisk", sfdisk_main, _BB_DIR_SBIN},
-#ifdef BB_SFDISK
-#endif
- {"sfdisk", sfdisk_main, _BB_DIR_SBIN},
-#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_LOGGER
- {"logger", logger_main, _BB_DIR_USR_BIN},
-#endif
-#ifdef BB_LOGNAME
- {"logname", logname_main, _BB_DIR_USR_BIN},
-#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_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_TRUE_FALSE
- {"false", false_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_UPTIME
- {"uptime", uptime_main, _BB_DIR_USR_BIN},
-#endif
-#ifdef BB_UNIQ
- {"uniq", uniq_main, _BB_DIR_BIN},
-#endif
-#ifdef BB_UPDATE
- {"update", update_main, _BB_DIR_SBIN},
-#endif
-#ifdef BB_WC
- {"wc", wc_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_GUNZIP
- {"gunzip", gunzip_main, _BB_DIR_BIN},
-#endif
-#ifdef BB_GZIP
- {"gzip", gzip_main, _BB_DIR_BIN},
-#endif
- {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);
+ rc = Link(busybox, command);
+ if (rc) {
+ error_msg("%s: %s\n", command, strerror(errno));
+ }
+ }
+}
+#endif /* BB_FEATURE_INSTALLER */
int main(int argc, char **argv)
{
- char *s;
- char *name;
- const struct Applet *a = applets;
+ struct BB_applet search_applet, *applet;
+ const char *s;
+ 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;
+ }
+ }
- for (s = name = argv[0]; *s != '\0';) {
- if (*s++ == '/')
- name = s;
+ /* link */
+ busybox = busybox_fullpath();
+ if (busybox) {
+ install_links(busybox, use_symbolic_links);
+ free(busybox);
+ } else {
+ rc = 1;
+ }
+ return rc;
}
+#endif /* BB_FEATURE_INSTALLER */
- *argv = name;
+ for (s = applet_name = argv[0]; *s != '\0';) {
+ if (*s++ == '/')
+ applet_name = s;
+ }
- while (a->name != 0) {
- if (strcmp(name, a->name) == 0) {
- int status;
+#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
- status = ((*(a->main)) (argc, argv));
- if (status < 0) {
- fprintf(stderr, "%s: %s\n", a->name, strerror(errno));
- }
- fprintf(stderr, "\n");
- exit(status);
- }
- a++;
+ /* Do a binary search to find the applet entry given the name. */
+ search_applet.name = applet_name;
+ applet = bsearch(&search_applet, applets, NUM_APPLETS,
+ sizeof(struct BB_applet), applet_name_compare);
+ if (applet != NULL) {
+ if (applet->usage && argv[1] && strcmp(argv[1], "--help") == 0)
+ usage(applet->usage);
+ exit((*(applet->main)) (argc, argv));
}
- exit(busybox_main(argc, argv));
+
+ return(busybox_main(argc, argv));
}
int busybox_main(int argc, char **argv)
{
int col = 0;
+ int ps_index;
+ char *index, *index2;
argc--;
- argv++;
+ /* If we've already been here once, exit now */
if (been_there_done_that == 1 || argc < 1) {
- const struct Applet *a = applets;
+ const struct BB_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");
+ 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, "\n\n");
exit(-1);
- } else {
- /* If we've already been here once, exit now */
- been_there_done_that = 1;
- return (main(argc, argv));
}
+
+ /* Flag that we've been here already */
+ been_there_done_that = 1;
+
+ /* We do not want the word "busybox" to show up in ps, so we move
+ * everything in argv around to fake ps into showing what we want it to
+ * show. Since we are only shrinking the string, we don't need to move
+ * __environ or any of that tedious stuff... */
+ ps_index = 0;
+ index=*argv;
+ index2=argv[argc];
+ index2+=strlen(argv[argc]);
+ while(ps_index < argc) {
+ argv[ps_index]=index;
+ memmove(index, argv[ps_index+1], strlen(argv[ps_index+1])+1);
+ index+=(strlen(index));
+ *index='\0';
+ index++;
+ ps_index++;
+ }
+ while(index<=index2)
+ *index++='\0';
+ argv[ps_index]=NULL;
+
+ return (main(argc, argv));
}
/*
projects / oweals / busybox.git / blobdiff