diff options
Diffstat (limited to 'applets/busybox.c')
| -rw-r--r-- | applets/busybox.c | 129 |
1 files changed, 44 insertions, 85 deletions
diff --git a/applets/busybox.c b/applets/busybox.c index ee74b4c..420c9c0 100644 --- a/applets/busybox.c +++ b/applets/busybox.c @@ -9,7 +9,6 @@ #include <locale.h> #endif -int been_there_done_that = 0; /* Also used in applets.c */ const char *bb_applet_name; #ifdef CONFIG_FEATURE_INSTALLER @@ -32,17 +31,6 @@ static const char* const install_dir[] = { /* 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) { @@ -72,41 +60,27 @@ int main(int argc, char **argv) { const char *s; - bb_applet_name = argv[0]; - - if (bb_applet_name[0] == '-') - bb_applet_name++; + bb_applet_name=argv[0]; + if (*bb_applet_name == '-') bb_applet_name++; + for (s = bb_applet_name; *s ;) + if (*(s++) == '/') bb_applet_name = s; - 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 - { + /* Set locale for everybody except `init' */ + if(ENABLE_LOCALE_SUPPORT && (!ENABLE_INIT || getpid()==1)) 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, len, i; - -#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)) { + if (ENABLE_FEATURE_INSTALLER && argc > 1 && !strcmp(argv[1], "--install")) { int use_symbolic_links = 0; int rc = 0; char *busybox; @@ -119,7 +93,7 @@ int busybox_main(int argc, char **argv) } /* link */ - busybox = busybox_fullpath(); + busybox = xreadlink("/proc/self/exe"); if (busybox) { install_links(busybox, use_symbolic_links); free(busybox); @@ -128,60 +102,45 @@ int busybox_main(int argc, char **argv) } 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; - int output_width = 60; - -#ifdef CONFIG_FEATURE_AUTOWIDTH - /* Obtain the terminal width. */ - get_terminal_width_height(0, &output_width, NULL); - /* leading tab and room to wrap */ - output_width -= 20; -#endif - 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); - - while (a->name != 0) { - col += - printf("%s%s", ((col == 0) ? "\t" : ", "), - (a++)->name); - if (col > output_width && a->name != 0) { - printf(",\n"); - col = 0; + /* 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], argc, 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); } - printf("\n\n"); - exit(0); - } - - /* Flag that we've been here already */ - been_there_done_that = 1; - - /* Move the command line down a notch */ - /* Preserve pointers so setproctitle() works consistently */ - len = argv[argc] + strlen(argv[argc]) - argv[1]; - memmove(argv[0], argv[1], len); - memset(argv[0] + len, 0, argv[1] - argv[0]); - - /* Fix up the argv pointers */ - len = argv[1] - argv[0]; - memmove(argv, argv + 1, sizeof(char *) * (argc + 1)); - for (i = 0; i < argc; i++) - argv[i] -= len; - - return (main(argc, argv)); + } else run_applet_by_name(bb_applet_name=argv[1], argc-1, argv+1); + + bb_error_msg_and_die("applet not found"); } /* |