shell: remove lash and bbsh

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>

TEST_config_nommu

@@ -904,7 +904,6 @@ CONFIG_HUSH_FUNCTIONS=y
 CONFIG_HUSH_LOCAL=y
 CONFIG_HUSH_EXPORT_N=y
 CONFIG_HUSH_RANDOM_SUPPORT=y
-CONFIG_LASH=y
 CONFIG_MSH=y
 CONFIG_SH_MATH_SUPPORT=y
 CONFIG_SH_MATH_SUPPORT_64=y

TEST_config_noprintf

@@ -904,7 +904,6 @@ CONFIG_FEATURE_SH_IS_NONE=y
 # CONFIG_FEATURE_BASH_IS_ASH is not set
 # CONFIG_FEATURE_BASH_IS_HUSH is not set
 CONFIG_FEATURE_BASH_IS_NONE=y
-# CONFIG_LASH is not set
 # CONFIG_MSH is not set
 # CONFIG_SH_MATH_SUPPORT is not set
 # CONFIG_SH_MATH_SUPPORT_64 is not set

TEST_config_rh9

@@ -918,7 +918,6 @@ CONFIG_HUSH_FUNCTIONS=y
 CONFIG_HUSH_LOCAL=y
 CONFIG_HUSH_EXPORT_N=y
 CONFIG_HUSH_RANDOM_SUPPORT=y
-# CONFIG_LASH is not set
 CONFIG_MSH=y
 CONFIG_SH_MATH_SUPPORT=y
 CONFIG_SH_MATH_SUPPORT_64=y

TODO

@@ -82,7 +82,7 @@ Rob Landley suggested this:
 
   initramfs
     Busybox should have a sample initramfs build script.  This depends on
-    bbsh, mdev, and switch_root.
+    shell, mdev, and switch_root.
 
   mkdep
     Write a mkdep that doesn't segfault if there's a directory it doesn't

include/applets.src.h

@@ -75,7 +75,6 @@ IF_ARPING(APPLET(arping, _BB_DIR_USR_BIN, _BB_SUID_DROP))
 IF_AWK(APPLET_NOEXEC(awk, awk, _BB_DIR_USR_BIN, _BB_SUID_DROP, awk))
 IF_BASENAME(APPLET_NOFORK(basename, basename, _BB_DIR_USR_BIN, _BB_SUID_DROP, basename))
 IF_BBCONFIG(APPLET(bbconfig, _BB_DIR_BIN, _BB_SUID_DROP))
-//IF_BBSH(APPLET(bbsh, _BB_DIR_BIN, _BB_SUID_DROP))
 IF_BEEP(APPLET(beep, _BB_DIR_USR_BIN, _BB_SUID_DROP))
 IF_BLKID(APPLET(blkid, _BB_DIR_SBIN, _BB_SUID_DROP))
 IF_BOOTCHARTD(APPLET(bootchartd, _BB_DIR_SBIN, _BB_SUID_DROP))

shell/bbsh.c

@@ -1,223 +0,0 @@
-/* vi: set ts=4 :
- *
- * bbsh - busybox shell
- *
- * Copyright 2006 Rob Landley <rob@landley.net>
- *
- * Licensed under GPLv2 or later, see file LICENSE in this source tree.
- */
-
-// A section of code that gets repeatedly or conditionally executed is stored
-// as a string and parsed each time it's run.
-
-
-
-// Wheee, debugging.
-
-// Terminal control
-#define ENABLE_BBSH_TTY        0
-
-// &, fg, bg, jobs.  (ctrl-z with tty.)
-#define ENABLE_BBSH_JOBCTL     0
-
-// Flow control (if, while, for, functions { })
-#define ENABLE_BBSH_FLOWCTL    0
-
-#define ENABLE_BBSH_ENVVARS    0  // Environment variable support
-
-// Local and synthetic variables, fancy prompts, set, $?, etc.
-#define ENABLE_BBSH_LOCALVARS  0
-
-// Pipes and redirects: | > < >> << && || & () ;
-#define ENABLE_BBSH_PIPES      0
-
-/* Fun:
-
-  echo `echo hello#comment " woot` and more
-*/
-
-#include "libbb.h"
-
-// A single executable, its arguments, and other information we know about it.
-#define BBSH_FLAG_EXIT    1
-#define BBSH_FLAG_SUSPEND 2
-#define BBSH_FLAG_PIPE    4
-#define BBSH_FLAG_AND     8
-#define BBSH_FLAG_OR      16
-#define BBSH_FLAG_AMP     32
-#define BBSH_FLAG_SEMI    64
-#define BBSH_FLAG_PAREN   128
-
-// What we know about a single process.
-struct command {
-	struct command *next;
-	int flags;		// exit, suspend, && ||
-	int pid;		// pid (or exit code)
-	int argc;
-	char *argv[];
-};
-
-// A collection of processes piped into/waiting on each other.
-struct pipeline {
-	struct pipeline *next;
-	int job_id;
-	struct command *cmd;
-	char *cmdline;
-	int cmdlinelen;
-};
-
-static void free_list(void *list, void (*freeit)(void *data))
-{
-	while (list) {
-		void **next = (void **)list;
-		void *list_next = *next;
-		freeit(list);
-		free(list);
-		list = list_next;
-	}
-}
-
-// Parse one word from the command line, appending one or more argv[] entries
-// to struct command.  Handles environment variable substitution and
-// substrings.  Returns pointer to next used byte, or NULL if it
-// hit an ending token.
-static char *parse_word(char *start, struct command **cmd)
-{
-	char *end;
-
-	// Detect end of line (and truncate line at comment)
-	if (ENABLE_BBSH_PIPES && strchr("><&|(;", *start)) return 0;
-
-	// Grab next word.  (Add dequote and envvar logic here)
-	end = start;
-	end = skip_non_whitespace(end);
-	(*cmd)->argv[(*cmd)->argc++] = xstrndup(start, end-start);
-
-	// Allocate more space if there's no room for NULL terminator.
-
-	if (!((*cmd)->argc & 7))
-			*cmd = xrealloc(*cmd,
-					sizeof(struct command) + ((*cmd)->argc+8)*sizeof(char *));
-	(*cmd)->argv[(*cmd)->argc] = 0;
-	return end;
-}
-
-// Parse a line of text into a pipeline.
-// Returns a pointer to the next line.
-
-static char *parse_pipeline(char *cmdline, struct pipeline *line)
-{
-	struct command **cmd = &(line->cmd);
-	char *start = line->cmdline = cmdline;
-
-	if (!cmdline) return 0;
-
-	if (ENABLE_BBSH_JOBCTL) line->cmdline = cmdline;
-
-	// Parse command into argv[]
-	for (;;) {
-		char *end;
-
-		// Skip leading whitespace and detect end of line.
-		start = skip_whitespace(start);
-		if (!*start || *start=='#') {
-			if (ENABLE_BBSH_JOBCTL) line->cmdlinelen = start-cmdline;
-			return 0;
-		}
-
-		// Allocate next command structure if necessary
-		if (!*cmd) *cmd = xzalloc(sizeof(struct command)+8*sizeof(char *));
-
-		// Parse next argument and add the results to argv[]
-		end = parse_word(start, cmd);
-
-		// If we hit the end of this command, how did it end?
-		if (!end) {
-			if (ENABLE_BBSH_PIPES && *start) {
-				if (*start==';') {
-					start++;
-					break;
-				}
-				// handle | & < > >> << || &&
-			}
-			break;
-		}
-		start = end;
-	}
-
-	if (ENABLE_BBSH_JOBCTL) line->cmdlinelen = start-cmdline;
-
-	return start;
-}
-
-// Execute the commands in a pipeline
-static int run_pipeline(struct pipeline *line)
-{
-	struct command *cmd = line->cmd;
-	if (!cmd || !cmd->argc) return 0;
-
-	// Handle local commands.  This is totally fake and plastic.
-	if (cmd->argc==2 && !strcmp(cmd->argv[0],"cd"))
-		chdir(cmd->argv[1]);
-	else if (!strcmp(cmd->argv[0],"exit"))
-		exit(cmd->argc>1 ? atoi(cmd->argv[1]) : 0);
-	else {
-		int status;
-		pid_t pid=fork();
-		if (!pid) {
-			run_applet_and_exit(cmd->argv[0],cmd->argc,cmd->argv);
-			execvp(cmd->argv[0],cmd->argv);
-			printf("No %s", cmd->argv[0]);
-			exit(EXIT_FAILURE);
-		} else waitpid(pid, &status, 0);
-	}
-
-	return 0;
-}
-
-static void free_cmd(void *data)
-{
-	struct command *cmd=(struct command *)data;
-
-	while (cmd->argc) free(cmd->argv[--cmd->argc]);
-}
-
-
-static void handle(char *command)
-{
-	struct pipeline line;
-	char *start = command;
-
-	for (;;) {
-		memset(&line,0,sizeof(struct pipeline));
-		start = parse_pipeline(start, &line);
-		if (!line.cmd) break;
-
-		run_pipeline(&line);
-		free_list(line.cmd, free_cmd);
-	}
-}
-
-int bbsh_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int bbsh_main(int argc UNUSED_PARAM, char **argv)
-{
-	char *command=NULL;
-	FILE *f;
-
-	getopt32(argv, "c:", &command);
-
-	f = argv[optind] ? xfopen_for_read(argv[optind]) : NULL;
-	if (command) handle(command);
-	else {
-		unsigned cmdlen=0;
-		for (;;) {
-			if (!f) putchar('$');
-			if (1 > getline(&command, &cmdlen, f ? f : stdin)) break;
-
-			handle(command);
-		}
-		if (ENABLE_FEATURE_CLEAN_UP) free(command);
-	}
-
-	return 1;
-}

shell/hush.c

@@ -102,7 +102,6 @@
 
 //applet:IF_HUSH(APPLET(hush, _BB_DIR_BIN, _BB_SUID_DROP))
 //applet:IF_MSH(APPLET(msh, _BB_DIR_BIN, _BB_SUID_DROP))
-//applet:IF_LASH(APPLET(lash, _BB_DIR_BIN, _BB_SUID_DROP))
 //applet:IF_FEATURE_SH_IS_HUSH(APPLET_ODDNAME(sh, hush, _BB_DIR_BIN, _BB_SUID_DROP, sh))
 //applet:IF_FEATURE_BASH_IS_HUSH(APPLET_ODDNAME(bash, hush, _BB_DIR_BIN, _BB_SUID_DROP, bash))
 
@@ -223,13 +222,6 @@
 //config:	  This instructs hush to print commands before execution.
 //config:	  Adds ~300 bytes.
 //config:
-//config:config LASH
-//config:	bool "lash (deprecated: aliased to hush)"
-//config:	default n
-//config:	select HUSH
-//config:	help
-//config:	  lash is deprecated and will be removed, please migrate to hush.
-//config:
 //config:config MSH
 //config:	bool "msh (deprecated: aliased to hush)"
 //config:	default n
@@ -240,8 +232,6 @@
 
 //usage:#define hush_trivial_usage NOUSAGE_STR
 //usage:#define hush_full_usage ""
-//usage:#define lash_trivial_usage NOUSAGE_STR
-//usage:#define lash_full_usage ""
 //usage:#define msh_trivial_usage NOUSAGE_STR
 //usage:#define msh_full_usage ""
 
@@ -7732,15 +7722,6 @@ int hush_main(int argc, char **argv)
 }
 
 
-#if ENABLE_LASH
-int lash_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int lash_main(int argc, char **argv)
-{
-	bb_error_msg("lash is deprecated, please use hush instead");
-	return hush_main(argc, argv);
-}
-#endif
-
 #if ENABLE_MSH
 int msh_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int msh_main(int argc, char **argv)