diff options
Diffstat (limited to 'config/busybox/shell/Config.in')
| -rw-r--r-- | config/busybox/shell/Config.in | 199 |
1 files changed, 114 insertions, 85 deletions
diff --git a/config/busybox/shell/Config.in b/config/busybox/shell/Config.in index fcb98b804..7419d12a4 100644 --- a/config/busybox/shell/Config.in +++ b/config/busybox/shell/Config.in @@ -4,147 +4,157 @@ # menu "Shells" - depends on BUSYBOX choice prompt "Choose your default shell" - default BB_CONFIG_FEATURE_SH_IS_NONE + default BUSYBOX_FEATURE_SH_IS_NONE help Choose a shell. The ash shell is the most bash compatible and full featured one. -config BB_CONFIG_FEATURE_SH_IS_ASH - select BB_CONFIG_ASH +config BUSYBOX_FEATURE_SH_IS_ASH + select BUSYBOX_ASH bool "ash" -config BB_CONFIG_FEATURE_SH_IS_HUSH - select BB_CONFIG_HUSH +config BUSYBOX_FEATURE_SH_IS_HUSH + select BUSYBOX_HUSH bool "hush" ####config FEATURE_SH_IS_LASH #### select LASH #### bool "lash" -config BB_CONFIG_FEATURE_SH_IS_MSH - select BB_CONFIG_MSH +config BUSYBOX_FEATURE_SH_IS_MSH + select BUSYBOX_MSH bool "msh" -config BB_CONFIG_FEATURE_SH_IS_NONE +config BUSYBOX_FEATURE_SH_IS_NONE bool "none" endchoice -config BB_CONFIG_ASH +config BUSYBOX_ASH bool "ash" default n - select BB_CONFIG_TEST help Tha 'ash' shell adds about 60k in the default configuration and is the most complete and most pedantically correct shell included with - busybox. This shell is actually a derivative of the Debian 'dash' + busybox. This shell is actually a derivative of the Debian 'dash' shell (by Herbert Xu), which was created by porting the 'ash' shell (written by Kenneth Almquist) from NetBSD. comment "Ash Shell Options" - depends on BB_CONFIG_ASH + depends on BUSYBOX_ASH -config BB_CONFIG_ASH_JOB_CONTROL +config BUSYBOX_ASH_BASH_COMPAT + bool "bash-compatible extensions" + default y + depends on BUSYBOX_ASH + help + Enable bash-compatible extensions. + +config BUSYBOX_ASH_JOB_CONTROL bool "Job control" default y - depends on BB_CONFIG_ASH + depends on BUSYBOX_ASH help Enable job control in the ash shell. -config BB_CONFIG_ASH_READ_NCHARS +config BUSYBOX_ASH_READ_NCHARS bool "'read -n N' and 'read -s' support" default n - depends on BB_CONFIG_ASH + depends on BUSYBOX_ASH help 'read -n N' will return a value after N characters have been read. 'read -s' will read without echoing the user's input. -config BB_CONFIG_ASH_READ_TIMEOUT - bool "'read -t S' support." +config BUSYBOX_ASH_READ_TIMEOUT + bool "'read -t S' support" default n - depends on BB_CONFIG_ASH + depends on BUSYBOX_ASH help 'read -t S' will return a value after S seconds have passed. This implementation will allow fractional seconds, expressed as a decimal fraction, e.g. 'read -t 2.5 foo'. -config BB_CONFIG_ASH_ALIAS +config BUSYBOX_ASH_ALIAS bool "alias support" default y - depends on BB_CONFIG_ASH + depends on BUSYBOX_ASH help Enable alias support in the ash shell. -config BB_CONFIG_ASH_MATH_SUPPORT +config BUSYBOX_ASH_MATH_SUPPORT bool "Posix math support" default y - depends on BB_CONFIG_ASH + depends on BUSYBOX_ASH help Enable math support in the ash shell. -config BB_CONFIG_ASH_MATH_SUPPORT_64 +config BUSYBOX_ASH_MATH_SUPPORT_64 bool "Extend Posix math support to 64 bit" default n - depends on BB_CONFIG_ASH_MATH_SUPPORT + depends on BUSYBOX_ASH_MATH_SUPPORT help - Enable 64-bit math support in the ash shell. This will make + Enable 64-bit math support in the ash shell. This will make the shell slightly larger, but will allow computation with very large numbers. -config BB_CONFIG_ASH_GETOPTS +config BUSYBOX_ASH_GETOPTS bool "Builtin getopt to parse positional parameters" default n - depends on BB_CONFIG_ASH + depends on BUSYBOX_ASH help Enable getopts builtin in the ash shell. -config BB_CONFIG_ASH_BUILTIN_ECHO +config BUSYBOX_ASH_BUILTIN_ECHO bool "Builtin version of 'echo'" default y - select BB_CONFIG_ECHO - depends on BB_CONFIG_ASH + depends on BUSYBOX_ASH help Enable support for echo, builtin to ash. -config BB_CONFIG_ASH_BUILTIN_TEST +config BUSYBOX_ASH_BUILTIN_PRINTF + bool "Builtin version of 'printf'" + default y + depends on BUSYBOX_ASH + help + Enable support for printf, builtin to ash. + +config BUSYBOX_ASH_BUILTIN_TEST bool "Builtin version of 'test'" default y - select BB_CONFIG_TEST - depends on BB_CONFIG_ASH + depends on BUSYBOX_ASH help Enable support for test, builtin to ash. -config BB_CONFIG_ASH_CMDCMD +config BUSYBOX_ASH_CMDCMD bool "'command' command to override shell builtins" default n - depends on BB_CONFIG_ASH + depends on BUSYBOX_ASH help Enable support for the ash 'command' builtin, which allows you to run the specified command with the specified arguments, even when there is an ash builtin command with the same name. -config BB_CONFIG_ASH_MAIL +config BUSYBOX_ASH_MAIL bool "Check for new mail on interactive shells" default y - depends on BB_CONFIG_ASH + depends on BUSYBOX_ASH help Enable "check for new mail" in the ash shell. -config BB_CONFIG_ASH_OPTIMIZE_FOR_SIZE +config BUSYBOX_ASH_OPTIMIZE_FOR_SIZE bool "Optimize for size instead of speed" default y - depends on BB_CONFIG_ASH + depends on BUSYBOX_ASH help Compile ash for reduced size at the price of speed. -config BB_CONFIG_ASH_RANDOM_SUPPORT +config BUSYBOX_ASH_RANDOM_SUPPORT bool "Pseudorandom generator and variable $RANDOM" default n - depends on BB_CONFIG_ASH + depends on BUSYBOX_ASH help Enable pseudorandom generator and dynamic variable "$RANDOM". Each read of "$RANDOM" will generate a new pseudorandom value. @@ -152,53 +162,51 @@ config BB_CONFIG_ASH_RANDOM_SUPPORT After "unset RANDOM" then generator will switch off and this variable will no longer have special treatment. -config BB_CONFIG_ASH_EXPAND_PRMT +config BUSYBOX_ASH_EXPAND_PRMT bool "Expand prompt string" default n - depends on BB_CONFIG_ASH + depends on BUSYBOX_ASH help "PS#" may be contain volatile content, such as backquote commands. This option recreates the prompt string from the environment variable each time it is displayed. -config BB_CONFIG_HUSH +config BUSYBOX_HUSH bool "hush" default n - select BB_CONFIG_TRUE - select BB_CONFIG_FALSE - select BB_CONFIG_TEST - select BB_CONFIG_ECHO help hush is a very small shell (just 18k) and it has fairly complete - Bourne shell grammar. It even handles all the normal flow control + Bourne shell grammar. It even handles all the normal flow control options such as if/then/elif/else/fi, for/in/do/done, while loops, - etc. + case/esac. + + It uses only vfork, so it can be used on uClinux systems. - It does not handle case/esac, select, function, here documents ( << + It does not handle select, functions, here documents ( << word ), arithmetic expansion, aliases, brace expansion, tilde expansion, &> and >& redirection of stdout+stderr, etc. -config BB_CONFIG_HUSH_HELP +config BUSYBOX_HUSH_HELP bool "help builtin" default n - depends on BB_CONFIG_HUSH + depends on BUSYBOX_HUSH help Enable help builtin in hush. Code size + ~1 kbyte. -config BB_CONFIG_HUSH_INTERACTIVE +config BUSYBOX_HUSH_INTERACTIVE bool "Interactive mode" default y - depends on BB_CONFIG_HUSH + depends on BUSYBOX_HUSH help Enable interactive mode (prompt and command editing). Without this, hush simply reads and executes commands from stdin just like a shell script from the file. No prompt, no PS1/PS2 magic shell variables. -config BB_CONFIG_HUSH_JOB +config BUSYBOX_HUSH_JOB bool "Job control" default n - depends on BB_CONFIG_HUSH_INTERACTIVE + depends on BUSYBOX_HUSH_INTERACTIVE help Enable job control: Ctrl-Z backgrounds, Ctrl-C interrupts current command (not entire shell), fg/bg builtins work. Without this option, @@ -206,70 +214,74 @@ config BB_CONFIG_HUSH_JOB prompting for next command (or executing next command in a script), but no separate process group is formed. -config BB_CONFIG_HUSH_TICK +config BUSYBOX_HUSH_TICK bool "Process substitution" default n - depends on BB_CONFIG_HUSH + depends on BUSYBOX_HUSH help Enable process substitution `command` and $(command) in hush. -config BB_CONFIG_HUSH_IF +config BUSYBOX_HUSH_IF bool "Support if/then/elif/else/fi" default n - depends on BB_CONFIG_HUSH + depends on BUSYBOX_HUSH help Enable if/then/elif/else/fi in hush. -config BB_CONFIG_HUSH_LOOPS +config BUSYBOX_HUSH_LOOPS bool "Support for, while and until loops" default n - depends on BB_CONFIG_HUSH + depends on BUSYBOX_HUSH help Enable for, while and until loops in hush. + As of 2008-07, break and continue statements are not supported. -config BB_CONFIG_LASH +config BUSYBOX_HUSH_CASE + bool "Support case ... esac statement" + default n + depends on BUSYBOX_HUSH + help + Enable case ... esac statement in hush. +400 bytes. + +config BUSYBOX_LASH bool "lash" default n - select BB_CONFIG_HUSH + select BUSYBOX_HUSH help lash is deprecated and will be removed, please migrate to hush. - -config BB_CONFIG_MSH +config BUSYBOX_MSH bool "msh" default n - select BB_CONFIG_TRUE - select BB_CONFIG_FALSE - select BB_CONFIG_TEST help 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 to do. It is not always pedantically correct about Bourne shell grammar (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. + It uses only vfork, so it can be used on uClinux systems. comment "Bourne Shell Options" - depends on BB_CONFIG_MSH || BB_CONFIG_LASH || BB_CONFIG_HUSH || BB_CONFIG_ASH + depends on BUSYBOX_MSH || BUSYBOX_LASH || BUSYBOX_HUSH || BUSYBOX_ASH -config BB_CONFIG_FEATURE_SH_EXTRA_QUIET +config BUSYBOX_FEATURE_SH_EXTRA_QUIET bool "Hide message on interactive shell startup" default n - depends on BB_CONFIG_MSH || BB_CONFIG_LASH || BB_CONFIG_HUSH || BB_CONFIG_ASH + depends on BUSYBOX_MSH || BUSYBOX_LASH || BUSYBOX_HUSH || BUSYBOX_ASH help Remove the busybox introduction when starting a shell. -config BB_CONFIG_FEATURE_SH_STANDALONE +config BUSYBOX_FEATURE_SH_STANDALONE bool "Standalone shell" default n - depends on (BB_CONFIG_MSH || BB_CONFIG_LASH || BB_CONFIG_HUSH || BB_CONFIG_ASH) && BB_CONFIG_FEATURE_PREFER_APPLETS + depends on (BUSYBOX_MSH || BUSYBOX_LASH || BUSYBOX_HUSH || BUSYBOX_ASH) && BUSYBOX_FEATURE_PREFER_APPLETS help This option causes busybox shells to use busybox applets - in preference to executables in the PATH whenever possible. For + in preference to executables in the PATH whenever possible. For example, entering the command 'ifconfig' into the shell would cause - busybox to use the ifconfig busybox applet. Specifying the fully + busybox to use the ifconfig busybox applet. Specifying the fully qualified executable name, such as '/sbin/ifconfig' will still - execute the /sbin/ifconfig executable on the filesystem. This option + execute the /sbin/ifconfig executable on the filesystem. This option is generally used when creating a statically linked version of busybox for use as a rescue shell, in the event that you screw up your system. @@ -283,16 +295,33 @@ config BB_CONFIG_FEATURE_SH_STANDALONE started this way). # untrue? # Note that this will *also* cause applets to take precedence -# over shell builtins of the same name. So turning this on will +# over shell builtins of the same name. So turning this on will # eliminate any performance gained by turning on the builtin "echo" # and "test" commands in ash. # untrue? # Note that when using this option, the shell will attempt to directly -# run '/bin/busybox'. If you do not have the busybox binary sitting in +# run '/bin/busybox'. If you do not have the busybox binary sitting in # that exact location with that exact name, this option will not work at # all. -config BB_CONFIG_CTTYHACK +config BUSYBOX_FEATURE_SH_NOFORK + bool "Run 'nofork' applets directly" + default n + depends on (BUSYBOX_MSH || BUSYBOX_LASH || BUSYBOX_HUSH || BUSYBOX_ASH) && BUSYBOX_FEATURE_PREFER_APPLETS + help + This option causes busybox shells [currently only ash] + to not execute typical fork/exec/wait sequence, but call <applet>_main + directly, if possible. (Sometimes it is not possible: for example, + this is not possible in pipes). + + This will be done only for some applets (those which are marked + NOFORK in include/applets.h). + + This may significantly speed up some shell scripts. + + This feature is relatively new. Use with care. + +config BUSYBOX_CTTYHACK bool "cttyhack" default n help |