Allow multiple shells to be enabled.

This commit is contained in:
Matt Kraai
2001-08-01 17:21:35 +00:00
parent 0034443140
commit 2d91deba45
21 changed files with 225 additions and 250 deletions

View File

@@ -9,6 +9,7 @@
// BusyBox Applications
//#define BB_ADJTIMEX
//#define BB_AR
//#define BB_ASH
#define BB_BASENAME
#define BB_CAT
#define BB_CHGRP
@@ -51,6 +52,7 @@
#define BB_HEAD
//#define BB_HOSTID
//#define BB_HOSTNAME
//#define BB_HUSH
#define BB_ID
//#define BB_IFCONFIG
#define BB_INIT
@@ -58,6 +60,7 @@
#define BB_KILL
#define BB_KILLALL
#define BB_KLOGD
//#define BB_LASH
//#define BB_LENGTH
#define BB_LN
//#define BB_LOADACM
@@ -78,6 +81,7 @@
#define BB_MODPROBE
#define BB_MORE
#define BB_MOUNT
#define BB_MSH
//#define BB_MT
#define BB_MV
//#define BB_NC
@@ -101,7 +105,6 @@
//#define BB_RPM2CPIO
#define BB_SED
//#define BB_SETKEYCODES
#define BB_SH
#define BB_SLEEP
#define BB_SORT
//#define BB_STTY
@@ -146,40 +149,12 @@
// pretty/useful).
//
//
// If you enabled BB_SH above, you may select one of the following shells.
// You can only select ONE of the following shells. Sorry.
//
// lash is the very smallest shell (adds just 10k) and it is quite usable as
// a command prompt, but it is not suitable for any but the most trivial
// scripting (such as an initrd that calls insmod a few times) since it does
// not understand Bourne shell grammer. It does handle pipes, redirects, and
// job control though. Adding in command editing makes it very nice
// lightweight command prompt.
//#define BB_FEATURE_LASH
//
// hush is also quite small (just 18k) and it has very complete Bourne shell
// grammer. It handles if/then/else/fi just fine, but doesn't handle loops
// like for/do/done or case/esac and such. It also currently has a problem
// with job control.
//#define BB_FEATURE_HUSH
//
// msh: The minix shell (adds just 30k) is quite complete and handles things
// like for/do/done, case/esac and all the things you expect a Bourne shell to
// do. It is not always pedantically correct about Bourne shell grammer (try
// running the shell testscript "tests/sh.testcases" on it and compare vs bash)
// but for most things it works quite well. It also uses only vfork, so it can
// be used on uClinux systems. This was only recently added, so there is still
// room to shrink it further...
#define BB_FEATURE_MSH
//
// ash: This adds about 60k in the default configuration and is the most
// complete and most pedantically correct shell included with busybox. This
// shell was also recently added, and several people (mainly Vladimir and Erik)
// have been working on it. There are a number of configurable things at the
// top of ash.c as well, so check those out if you want to tweak things. The
// Posix math support is currently disabled (that bit of code was horrible) but
// will be restored for the next BusyBox release.
//#define BB_FEATURE_ASH
// If you enabled one or more of the shells, you may select which one
// should be run when sh is invoked:
//#define BB_FEATURE_SH_IS_ASH
//#define BB_FEATURE_SH_IS_HUSH
//#define BB_FEATURE_SH_IS_LASH
#define BB_FEATURE_SH_IS_MSH
//
// BusyBox will, by default, malloc space for its buffers. This costs code
// size for the call to xmalloc. You can use the following feature to have
@@ -286,11 +261,11 @@
#define BB_FEATURE_SORT_UNIQUE
//
// Enable command line editing in the shell.
// Only relevant if BB_SH is enabled. On by default.
// Only relevant if a shell is enabled. On by default.
#define BB_FEATURE_COMMAND_EDITING
//
// Enable tab completion in the shell. This is now working quite nicely.
// This feature adds a bit over 4k. Only relevant if BB_SH is enabled.
// This feature adds a bit over 4k. Only relevant if a shell is enabled.
#define BB_FEATURE_COMMAND_TAB_COMPLETION
//
// Attempts to match usernames in a ~-prefixed path
@@ -299,7 +274,7 @@
//Allow the shell to invoke all the compiled in BusyBox applets as if they
//were shell builtins. Nice for staticly linking an emergency rescue shell,
//among other things. Off by default.
// Only relevant if BB_SH is enabled.
// Only relevant if a shell is enabled.
//#define BB_FEATURE_SH_STANDALONE_SHELL
//
//When this is enabled, busybox shell applets can be called using full path
@@ -308,13 +283,13 @@
//will use BusyBox cat even if /bin/cat exists on the filesystem and is _not_
//busybox. Some systems want this, others do not. Choose wisely. :-) This
//only has meaning when BB_FEATURE_SH_STANDALONE_SHELL is enabled.
// Only relevant if BB_SH is enabled. Off by default.
// Only relevant if a shell is enabled. Off by default.
//#define BB_FEATURE_SH_APPLETS_ALWAYS_WIN
//
// Uncomment this option for a fancy shell prompt that includes the
// current username and hostname. On systems that don't have usernames
// or hostnames, this can look hideous.
// Only relevant if BB_SH is enabled.
// Only relevant if a shell is enabled.
//#define BB_FEATURE_SH_FANCY_PROMPT
//
//Turn on extra fbset options
@@ -435,8 +410,8 @@
#undef BB_KLOGD /* Uses daemon() */
#undef BB_UPDATE /* Uses daemon() */
#endif
#if defined BB_SH
#if defined BB_FEATURE_COMMAND_EDITING
#if defined BB_ASH || defined BB_HUSH || defined BB_LASH || defined BB_MSH
#if defined BB_FEATURE_COMMAND_EDITING
#define BB_CMDEDIT
#else
#undef BB_FEATURE_COMMAND_EDITING
@@ -494,3 +469,17 @@
#define BB_LOGREAD
#endif
#endif
//
#if defined BB_ASH && defined BB_FEATURE_SH_IS_ASH
# define BB_SH
# define shell_main ash_main
#elif defined BB_HUSH && defined BB_FEATURE_SH_IS_HUSH
# define BB_SH
# define shell_main hush_main
#elif defined BB_LASH && defined BB_FEATURE_SH_IS_LASH
# define BB_SH
# define shell_main lash_main
#elif defined BB_MSH && defined BB_FEATURE_SH_IS_MSH
# define BB_SH
# define shell_main msh_main
#endif