libbusybox: move (possibly compressed) help stuff into libbusybox.

Makes individual binaries much smaller.

2 files changed, 6 insertions, 116 deletions

diff --git a/applets/Kbuild b/applets/Kbuild
index cf7d297..289c5de 100644
--- a/applets/Kbuild
+++ b/applets/Kbuild
@@ -4,13 +4,13 @@
 #
 # Licensed under the GPL v2, see the file LICENSE in this tarball.
 
-obj-y:=
-obj-y	    += applets.o
+obj-y :=
+obj-y += applets.o
 
 hostprogs-y:=
 hostprogs-y += usage
 
-always:=    $(hostprogs-y)
+always:= $(hostprogs-y)
 
 # Generated files need additional love
 
diff --git a/applets/applets.c b/applets/applets.c
index f91884b..49ad859 100644
--- a/applets/applets.c
+++ b/applets/applets.c
@@ -15,6 +15,7 @@
 #include <assert.h>
 #include "busybox.h"
 
+
 /* Apparently uclibc defines __GLIBC__ (compat trick?). Oh well. */
 #if ENABLE_STATIC && defined(__GLIBC__) && !defined(__UCLIBC__)
 #warning Static linking against glibc produces buggy executables
@@ -27,32 +28,8 @@
 #endif
 
 
-/* Declare <applet>_main() */
-#define PROTOTYPES
-#include "applets.h"
-#undef PROTOTYPES
-
-#if ENABLE_SHOW_USAGE && !ENABLE_FEATURE_COMPRESS_USAGE
-/* Define usage_messages[] */
-static const char usage_messages[] ALIGN1 = ""
-#define MAKE_USAGE
-#include "usage.h"
-#include "applets.h"
-;
-#undef MAKE_USAGE
-#else
-#define usage_messages 0
-#endif /* SHOW_USAGE */
-
-/* Define struct bb_applet applets[] */
-#include "applets.h"
-/* The -1 arises because of the {0,NULL,0,-1} entry. */
-
-#if ENABLE_FEATURE_SH_STANDALONE
-const unsigned short NUM_APPLETS = ARRAY_SIZE(applets);
-#endif
 const struct bb_applet *current_applet;
-const char *applet_name ATTRIBUTE_EXTERNALLY_VISIBLE;
+const char *applet_name;
 #if !BB_MMU
 bool re_execed;
 #endif
@@ -419,82 +396,6 @@ static void check_suid(const struct bb_applet *applet)
 #endif /* FEATURE_SUID */
 
 
-#if ENABLE_FEATURE_COMPRESS_USAGE
-
-#include "usage_compressed.h"
-#include "unarchive.h"
-
-static const char *unpack_usage_messages(void)
-{
-	char *outbuf = NULL;
-	bunzip_data *bd;
-	int i;
-
-	i = start_bunzip(&bd,
-			/* src_fd: */ -1,
-			/* inbuf:  */ packed_usage,
-			/* len:    */ sizeof(packed_usage));
-	/* read_bunzip can longjmp to start_bunzip, and ultimately
-	 * end up here with i != 0 on read data errors! Not trivial */
-	if (!i) {
-		/* Cannot use xmalloc: will leak bd in NOFORK case! */
-		outbuf = malloc_or_warn(SIZEOF_usage_messages);
-		if (outbuf)
-			read_bunzip(bd, outbuf, SIZEOF_usage_messages);
-	}
-	dealloc_bunzip(bd);
-	return outbuf;
-}
-#define dealloc_usage_messages(s) free(s)
-
-#else
-
-#define unpack_usage_messages() usage_messages
-#define dealloc_usage_messages(s) ((void)(s))
-
-#endif /* FEATURE_COMPRESS_USAGE */
-
-
-void bb_show_usage(void)
-{
-	if (ENABLE_SHOW_USAGE) {
-		const char *format_string;
-		const char *p;
-		const char *usage_string = p = unpack_usage_messages();
-		int i;
-
-		i = current_applet - applets;
-		while (i) {
-			while (*p++) continue;
-			i--;
-		}
-
-		fprintf(stderr, "%s multi-call binary\n", bb_banner);
-		format_string = "\nUsage: %s %s\n\n";
-		if (*p == '\b')
-			format_string = "\nNo help available.\n\n";
-		fprintf(stderr, format_string, applet_name, p);
-		dealloc_usage_messages((char*)usage_string);
-	}
-	xfunc_die();
-}
-
-
-static int applet_name_compare(const void *name, const void *vapplet)
-{
-	const struct bb_applet *applet = vapplet;
-
-	return strcmp(name, applet->name);
-}
-
-const struct bb_applet *find_applet_by_name(const char *name)
-{
-	/* Do a binary search to find the applet entry given the name. */
-	return bsearch(name, applets, ARRAY_SIZE(applets)-1, sizeof(applets[0]),
-				applet_name_compare);
-}
-
-
 #if ENABLE_FEATURE_INSTALLER
 /* create (sym)links for each applet */
 static void install_links(const char *busybox, int use_symbolic_links)
@@ -635,16 +536,9 @@ void run_applet_and_exit(const char *name, char **argv)
 }
 
 
-#ifdef __GLIBC__
-/* Make it reside in R/W memory: */
-int *const bb_errno __attribute__ ((section (".data")));
-#endif
-
 int main(int argc, char **argv)
 {
-#ifdef __GLIBC__
-	(*(int **)&bb_errno) = __errno_location();
-#endif
+	bbox_prepare_main();
 
 #if !BB_MMU
 	/* NOMMU re-exec trick sets high-order bit in first byte of name */
@@ -660,10 +554,6 @@ int main(int argc, char **argv)
 
 	parse_config_file(); /* ...maybe, if FEATURE_SUID_CONFIG */
 
-	/* Set locale for everybody except 'init' */
-	if (ENABLE_LOCALE_SUPPORT && getpid() != 1)
-		setlocale(LC_ALL, "");
-
 	run_applet_and_exit(applet_name, argv);
 	bb_error_msg_and_die("applet not found");
 }