1 /* vi: set sw=4 ts=4: */
3 * BusyBox' main applet dispatcher.
5 * Licensed under GPLv2, see file LICENSE in this tarball for details.
9 const char *applet_name ATTRIBUTE_EXTERNALLY_VISIBLE;
11 #ifdef CONFIG_FEATURE_INSTALLER
14 * this should be consistent w/ the enum, busybox.h::Location,
17 static const char usr_bin [] = "/usr/bin";
18 static const char usr_sbin[] = "/usr/sbin";
20 static const char* const install_dir[] = {
21 &usr_bin [8], /* "", equivalent to "/" for concat_path_file() */
22 &usr_bin [4], /* "/bin" */
23 &usr_sbin[4], /* "/sbin" */
29 typedef int (*link_func)(const char *, const char *);
31 /* create (sym)links for each applet */
32 static void install_links(const char *busybox, int use_symbolic_links)
39 if (use_symbolic_links)
42 for (i = 0; applets[i].name != NULL; i++) {
43 fpc = concat_path_file(
44 install_dir[applets[i].location],
46 rc = lf(busybox, fpc);
47 if (rc != 0 && errno != EEXIST) {
48 bb_perror_msg("%s", fpc);
55 #define install_links(x,y)
56 #endif /* CONFIG_FEATURE_INSTALLER */
58 int main(int argc, char **argv)
62 applet_name = argv[0];
63 if (*applet_name == '-')
65 while ((s = strchr(applet_name, '/')))
68 /* Set locale for everybody except 'init' */
69 if (ENABLE_LOCALE_SUPPORT && getpid() != 1)
70 setlocale(LC_ALL, "");
72 run_applet_by_name(applet_name, argc, argv);
73 bb_error_msg_and_die("applet not found");
76 int busybox_main(int argc, char **argv)
79 * This style of argument parsing doesn't scale well
80 * in the event that busybox starts wanting more --options.
81 * If someone has a cleaner approach, by all means implement it.
83 if (ENABLE_FEATURE_INSTALLER && argc > 1 && !strcmp(argv[1], "--install")) {
84 int use_symbolic_links = 0;
87 /* to use symlinks, or not to use symlinks... */
89 if (strcmp(argv[2], "-s") == 0)
90 use_symbolic_links = 1;
93 // XXX: FIXME: this is broken. Why not just use argv[0] ?
94 busybox = xreadlink("/proc/self/exe");
97 install_links(busybox, use_symbolic_links);
98 if (ENABLE_FEATURE_CLEAN_UP)
103 /* Deal with --help. (Also print help when called with no arguments) */
105 if (argc == 1 || !strcmp(argv[1], "--help") ) {
107 applet_name = argv[2];
108 run_applet_by_name(applet_name, 2, argv);
110 const struct BB_applet *a;
111 int col, output_width;
113 output_width = 80 - sizeof("start-stop-daemon, ") - 8;
114 if (ENABLE_FEATURE_AUTOWIDTH) {
115 /* Obtain the terminal width. */
116 get_terminal_width_height(0, &output_width, NULL);
117 /* leading tab and room to wrap */
118 output_width -= sizeof("start-stop-daemon, ") + 8;
122 "Copyright (C) 1998-2006 Erik Andersen, Rob Landley, and others.\n"
123 "Licensed under GPLv2. See source distribution for full notice.\n\n"
124 "Usage: busybox [function] [arguments]...\n"
125 " or: [function] [arguments]...\n\n"
126 "\tBusyBox is a multi-call binary that combines many common Unix\n"
127 "\tutilities into a single executable. Most people will create a\n"
128 "\tlink to busybox for each function they wish to use and BusyBox\n"
129 "\twill act like whatever it was invoked as!\n"
130 "\nCurrently defined functions:\n", bb_msg_full_version);
132 for (a = applets; a->name;) {
133 col += printf("%s%s", (col ? ", " : "\t"), a->name);
135 if (col > output_width && a->name) {
143 } else run_applet_by_name(argv[1], argc - 1, argv + 1);
145 bb_error_msg_and_die("applet not found");