This commit was manufactured by cvs2svn to create tag 'busybox_1_00'.

1 files changed, 193 insertions, 0 deletions

diff --git a/busybox/applets/busybox.c b/busybox/applets/busybox.c
new file mode 100644
index 0000000..dbb5e17
--- /dev/null
+++ b/busybox/applets/busybox.c
@@ -0,0 +1,193 @@
+/* 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, 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)) {
+		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;
+		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
+
+		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 > output_width && 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 */
+	/* 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));
+}
+
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/