*: BB_BANNER -> bb_banner (it is not a const or #define)!

correct_password: explain in detail why it is ok to use bb_banner
fsck_minix: make it print bb version, not it's own (outdated/irrelevant) one

Marginal size difference:
   text    data     bss     dec     hex filename
 679119    2700   15632  697451   aa46b busybox_old
 679091    2700   15632  697423   aa44f busybox_unstripped

applets/applets.c

@@ -467,11 +467,11 @@ void bb_show_usage(void)
 			i--;
 		}
 
-		format_string = "%s\n\nUsage: %s %s\n\n";
+		fprintf(stderr, "%s multi-call binary\n", bb_banner);
+		format_string = "\nUsage: %s %s\n\n";
 		if (*p == '\b')
-			format_string = "%s\n\nNo help available.\n\n";
-		fprintf(stderr, format_string, bb_msg_full_version,
-					applet_name, p);
+			format_string = "\nNo help available.\n\n";
+		fprintf(stderr, format_string, applet_name, p);
 		dealloc_usage_messages((char*)usage_string);
 	}
 	xfunc_die();
@@ -550,8 +550,8 @@ static int busybox_main(char **argv)
 		/* leading tab and room to wrap */
 		output_width -= sizeof("start-stop-daemon, ") + 8;
 
-		printf("%s\n"
-		       "Copyright (C) 1998-2006  Erik Andersen, Rob Landley, and others.\n"
+		printf("%s multi-call binary\n", bb_banner); /* reuse const string... */
+		printf("Copyright (C) 1998-2006  Erik Andersen, Rob Landley, and others.\n"
 		       "Licensed under GPLv2.  See source distribution for full notice.\n"
 		       "\n"
 		       "Usage: busybox [function] [arguments]...\n"
@@ -561,7 +561,7 @@ static int busybox_main(char **argv)
 		       "\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);
+		       "\nCurrently defined functions:\n");
 		col = 0;
 		a = applets;
 		while (a->name) {

include/libbb.h

@@ -927,9 +927,8 @@ enum {	/* DO NOT CHANGE THESE VALUES!  cp.c, mv.c, install.c depend on them. */
 #define FILEUTILS_CP_OPTSTR "pdRfils" USE_SELINUX("c")
 extern const struct bb_applet *current_applet;
 extern const char *applet_name;
-extern const char BB_BANNER[];
-
-extern const char bb_msg_full_version[];
+/* "BusyBox vN.N.N (timestamp or extra_vestion)" */
+extern const char bb_banner[];
 extern const char bb_msg_memory_exhausted[];
 extern const char bb_msg_invalid_date[];
 extern const char bb_msg_read_error[];

init/init.c

@@ -934,7 +934,7 @@ int init_main(int argc, char **argv)
 	if (argc > 1) setenv("RUNLEVEL", argv[1], 1);
 
 	/* Hello world */
-	message(MAYBE_CONSOLE | L_LOG, "init started: %s", bb_msg_full_version);
+	message(MAYBE_CONSOLE | L_LOG, "init started: %s", bb_banner);
 
 	/* Make sure there is enough memory to do something useful. */
 	if (ENABLE_SWAPONOFF) {

libbb/correct_password.c

@@ -47,9 +47,14 @@ int correct_password(const struct passwd *pw)
 	char buffer[256];
 #endif
 
-	correct = bb_msg_full_version; /* fake salt. crypt() can choke otherwise */
-	if (!pw)
-		goto fake_it; /* The content of 'correct' will never match */
+	/* fake salt. crypt() can choke otherwise.
+	 * (bb_banner's first two chars are letters and thus are valid salt) */
+	correct = bb_banner;
+	if (!pw) {
+		/* bb_banner will never match, it contains () which is never
+		 * generated in valid encrypted passwords. */
+		goto fake_it;
+	}
 	correct = pw->pw_passwd;
 #if ENABLE_FEATURE_SHADOWPASSWDS
 	if (LONE_CHAR(pw->pw_passwd, 'x') || LONE_CHAR(pw->pw_passwd, '*')) {

libbb/messages.c

@@ -12,8 +12,7 @@
 #else
 #define BANNER "BusyBox v" BB_VER " (" BB_EXTRA_VERSION ")"
 #endif
-const char BB_BANNER[] = BANNER;
-const char bb_msg_full_version[] = BANNER " multi-call binary";
+const char bb_banner[] = BANNER;
 
 const char bb_msg_memory_exhausted[] = "memory exhausted";
 const char bb_msg_invalid_date[] = "invalid date '%s'";

shell/ash.c

@@ -7737,16 +7737,16 @@ setinteractive(int on)
 #if !ENABLE_FEATURE_SH_EXTRA_QUIET
 	if (is_interactive > 1) {
 		/* Looks like they want an interactive shell */
-		static smallint do_banner;
+		static smallint did_banner;
 
-		if (!do_banner) {
+		if (!did_banner) {
 			out1fmt(
 				"\n\n"
-				"%s Built-in shell (ash)\n"
+				"%s built-in shell (ash)\n"
 				"Enter 'help' for a list of built-in commands."
 				"\n\n",
-				BB_BANNER);
-			do_banner = 1;
+				bb_banner);
+			did_banner = 1;
 		}
 	}
 #endif

shell/hush.c

@@ -3787,7 +3787,7 @@ int hush_main(int argc, char **argv)
 			hush_exit(xfunc_error_retval);
 		}
 #if !ENABLE_FEATURE_SH_EXTRA_QUIET
-		printf("\n\n%s hush - the humble shell v"HUSH_VER_STR"\n", BB_BANNER);
+		printf("\n\n%s hush - the humble shell v"HUSH_VER_STR"\n", bb_banner);
 		printf("Enter 'help' for a list of built-in commands.\n\n");
 #endif
 	}

shell/lash.c

@@ -1548,9 +1548,9 @@ int lash_main(int argc_l, char **argv_l)
 	if (opt & LASH_OPT_i) {
 		/* Looks like they want an interactive shell */
 		if (!ENABLE_FEATURE_SH_EXTRA_QUIET) {
-			printf("\n\n%s Built-in shell (lash)\n"
+			printf("\n\n%s built-in shell (lash)\n"
 					"Enter 'help' for a list of built-in commands.\n\n",
-					BB_BANNER);
+					bb_banner);
 		}
 	} else if (!local_pending_command && argv[optind]) {
 		//printf( "optind=%d  argv[optind]='%s'\n", optind, argv[optind]);

shell/msh.c

@@ -36,7 +36,7 @@
 # define bb_dev_null "/dev/null"
 # define DEFAULT_SHELL "/proc/self/exe"
 # define CONFIG_BUSYBOX_EXEC_PATH "/proc/self/exe"
-# define BB_BANNER "busybox standalone"
+# define bb_banner "busybox standalone"
 # define ENABLE_FEATURE_SH_STANDALONE 0
 # define bb_msg_memory_exhausted "memory exhausted"
 # define xmalloc(size) malloc(size)
@@ -5315,9 +5315,9 @@ int msh_main(int argc, char **argv)
 			interactive++;
 #if !ENABLE_FEATURE_SH_EXTRA_QUIET
 #ifdef MSHDEBUG
-			printf("\n\n%s Built-in shell (msh with debug)\n", BB_BANNER);
+			printf("\n\n%s built-in shell (msh with debug)\n", bb_banner);
 #else
-			printf("\n\n%s Built-in shell (msh)\n", BB_BANNER);
+			printf("\n\n%s built-in shell (msh)\n", bb_banner);
 #endif
 			printf("Enter 'help' for a list of built-in commands.\n\n");
 #endif

sysklogd/klogd.c

@@ -68,7 +68,7 @@ int klogd_main(int argc, char **argv)
 	if (option_mask32 & OPT_LEVEL)
 		klogctl(8, NULL, i);
 
-	syslog(LOG_NOTICE, "klogd started: %s", BB_BANNER);
+	syslog(LOG_NOTICE, "klogd started: %s", bb_banner);
 
 	/* Note: this code does not detect incomplete messages
 	 * (messages not ending with '\n' or just when kernel

util-linux/fsck_minix.c

@@ -114,7 +114,6 @@ static smallint version2;
 enum { version2 = 0 };
 #endif
 
-#define PROGRAM_VERSION "1.2 - 11/11/96"
 static smallint repair, automatic, verbose, list, show, warn_mode, force;
 static smallint changed;  /* is filesystem modified? */
 static smallint errors_uncorrected;  /* flag if some error was not corrected */
@@ -1315,7 +1314,7 @@ int fsck_minix_main(int argc, char **argv)
 	 * flags and whether or not the -f switch was specified on the
 	 * command line.
 	 */
-	printf("%s, "PROGRAM_VERSION"\n", applet_name);
+	printf("%s: %s\n", applet_name, bb_banner);
 
 	if (!(Super.s_state & MINIX_ERROR_FS)
 	 && (Super.s_state & MINIX_VALID_FS) && !force

util-linux/mkfs_minix.c

@@ -94,7 +94,7 @@ struct globals {
 	int dev_fd;
 
 #if ENABLE_FEATURE_MINIX2
-	int version2;
+	smallint version2;
 #define version2 G.version2
 #endif
 	char *device_name;