| /* vi: set sw=4 ts=4: */ |
| #include <stdio.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <errno.h> |
| #include <stdlib.h> |
| #include "busybox.h" |
| #ifdef CONFIG_LOCALE_SUPPORT |
| #include <locale.h> |
| #endif |
| |
| int been_there_done_that = 0; /* Also used in applets.c */ |
| const char *bb_applet_name; |
| |
| #ifdef CONFIG_FEATURE_INSTALLER |
| /* |
| * directory table |
| * this should be consistent w/ the enum, busybox.h::Location, |
| * or else... |
| */ |
| 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 *); |
| |
| /* |
| * Where in the filesystem is this busybox? |
| * [return] |
| * malloc'd string w/ full pathname of busybox's location |
| * NULL on failure |
| */ |
| static inline char *busybox_fullpath(void) |
| { |
| return xreadlink("/proc/self/exe"); |
| } |
| |
| /* create (sym)links for each applet */ |
| static void install_links(const char *busybox, int use_symbolic_links) |
| { |
| __link_f Link = link; |
| |
| char *fpc; |
| int i; |
| int rc; |
| |
| if (use_symbolic_links) |
| Link = symlink; |
| |
| 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); |
| } |
| free(fpc); |
| } |
| } |
| |
| #endif /* CONFIG_FEATURE_INSTALLER */ |
| |
| int main(int argc, char **argv) |
| { |
| const char *s; |
| |
| bb_applet_name = argv[0]; |
| |
| if (bb_applet_name[0] == '-') |
| bb_applet_name++; |
| |
| for (s = bb_applet_name; *s != '\0';) { |
| if (*s++ == '/') |
| bb_applet_name = s; |
| } |
| |
| #ifdef CONFIG_LOCALE_SUPPORT |
| #ifdef CONFIG_INIT |
| if(getpid()!=1) /* Do not set locale for `init' */ |
| #endif |
| { |
| setlocale(LC_ALL, ""); |
| } |
| #endif |
| |
| run_applet_by_name(bb_applet_name, argc, argv); |
| bb_error_msg_and_die("applet not found"); |
| } |
| |
| |
| int busybox_main(int argc, char **argv) |
| { |
| int col = 0; |
| |
| #ifdef CONFIG_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 /* CONFIG_FEATURE_INSTALLER */ |
| |
| argc--; |
| |
| /* If we've already been here once, exit now */ |
| 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", bb_msg_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(0); |
| } |
| |
| /* Flag that we've been here already */ |
| been_there_done_that = 1; |
| |
| /* Move the command line down a notch */ |
| return (main(argc, argv+1)); |
| } |
| |
| /* |
| Local Variables: |
| c-file-style: "linux" |
| c-basic-offset: 4 |
| tab-width: 4 |
| End: |
| */ |