X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/f77b88d124ea1c900f9cf5e04046939aad48bbe1..7ec87f23ff1626dd235c62f6a1c87c14f14b775b:/package/busybox/config/shell/Config.in diff --git a/package/busybox/config/shell/Config.in b/package/busybox/config/shell/Config.in index 6ac4f6971..d2b105661 100644 --- a/package/busybox/config/shell/Config.in +++ b/package/busybox/config/shell/Config.in @@ -3,7 +3,7 @@ # see scripts/kbuild/config-language.txt. # -menu "Another Bourne-like Shell" +menu "Shells" choice prompt "Choose your default shell" @@ -36,6 +36,7 @@ endchoice config BUSYBOX_CONFIG_ASH bool "ash" default y + select BUSYBOX_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 @@ -47,29 +48,46 @@ comment "Ash Shell Options" depends on BUSYBOX_CONFIG_ASH config BUSYBOX_CONFIG_ASH_JOB_CONTROL - bool " Enable Job control" + bool "Job control" default y depends on BUSYBOX_CONFIG_ASH help Enable job control in the ash shell. +config BUSYBOX_CONFIG_ASH_READ_NCHARS + bool "'read -n N' and 'read -s' support" + default n + depends on BUSYBOX_CONFIG_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 BUSYBOX_CONFIG_ASH_READ_TIMEOUT + bool "'read -t S' support." + default y + depends on BUSYBOX_CONFIG_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 BUSYBOX_CONFIG_ASH_ALIAS - bool " Enable alias support" + bool "alias support" default y depends on BUSYBOX_CONFIG_ASH help Enable alias support in the ash shell. config BUSYBOX_CONFIG_ASH_MATH_SUPPORT - bool " Enable Posix math support" + bool "Posix math support" default y depends on BUSYBOX_CONFIG_ASH help Enable math support in the ash shell. config BUSYBOX_CONFIG_ASH_MATH_SUPPORT_64 - bool " Extend Posix math support to 64 bit" - default n + bool "Extend Posix math support to 64 bit" + default y depends on BUSYBOX_CONFIG_ASH_MATH_SUPPORT help Enable 64-bit math support in the ash shell. This will make @@ -77,14 +95,30 @@ config BUSYBOX_CONFIG_ASH_MATH_SUPPORT_64 large numbers. config BUSYBOX_CONFIG_ASH_GETOPTS - bool " Enable getopts builtin to parse positional parameters" + bool "Builtin getopt to parse positional parameters" default y depends on BUSYBOX_CONFIG_ASH help Enable getopts builtin in the ash shell. +config BUSYBOX_CONFIG_ASH_BUILTIN_ECHO + bool "Builtin version of 'echo'" + default y + select BUSYBOX_CONFIG_ECHO + depends on BUSYBOX_CONFIG_ASH + help + Enable support for echo, builtin to ash. + +config BUSYBOX_CONFIG_ASH_BUILTIN_TEST + bool "Builtin version of 'test'" + default y + select BUSYBOX_CONFIG_TEST + depends on BUSYBOX_CONFIG_ASH + help + Enable support for test, builtin to ash. + config BUSYBOX_CONFIG_ASH_CMDCMD - bool " Enable cmdcmd to override shell builtins" + bool "'command' command to override shell builtins" default y depends on BUSYBOX_CONFIG_ASH help @@ -93,21 +127,21 @@ config BUSYBOX_CONFIG_ASH_CMDCMD even when there is an ash builtin command with the same name. config BUSYBOX_CONFIG_ASH_MAIL - bool " Check for new mail on interactive shells" + bool "Check for new mail on interactive shells" default n depends on BUSYBOX_CONFIG_ASH help Enable "check for new mail" in the ash shell. config BUSYBOX_CONFIG_ASH_OPTIMIZE_FOR_SIZE - bool " Optimize for size instead of speed" - default y + bool "Optimize for size instead of speed" + default n depends on BUSYBOX_CONFIG_ASH help - Compile ash for reduced size at price of speed. + Compile ash for reduced size at the price of speed. config BUSYBOX_CONFIG_ASH_RANDOM_SUPPORT - bool " Enable pseudorandom generator and variable $RANDOM" + bool "Pseudorandom generator and variable $RANDOM" default n depends on BUSYBOX_CONFIG_ASH help @@ -117,9 +151,21 @@ config BUSYBOX_CONFIG_ASH_RANDOM_SUPPORT After "unset RANDOM" then generator will switch off and this variable will no longer have special treatment. +config BUSYBOX_CONFIG_ASH_EXPAND_PRMT + bool "Expand prompt string" + default y + depends on BUSYBOX_CONFIG_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 BUSYBOX_CONFIG_HUSH bool "hush" default n + select BUSYBOX_CONFIG_TRUE + select BUSYBOX_CONFIG_FALSE + select BUSYBOX_CONFIG_TEST 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 @@ -130,10 +176,61 @@ config BUSYBOX_CONFIG_HUSH word ), arithmetic expansion, aliases, brace expansion, tilde expansion, &> and >& redirection of stdout+stderr, etc. +config BUSYBOX_CONFIG_HUSH_HELP + bool "help builtin" + default n + depends on BUSYBOX_CONFIG_HUSH + help + Enable help builtin in hush. Code size + ~1 kbyte. + +config BUSYBOX_CONFIG_HUSH_INTERACTIVE + bool "Interactive mode" + default n + depends on BUSYBOX_CONFIG_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 BUSYBOX_CONFIG_HUSH_JOB + bool "Job control" + default n + depends on BUSYBOX_CONFIG_HUSH_INTERACTIVE + help + Enable job control: Ctrl-Z backgrounds, Ctrl-C interrupts current + command (not entire shell), fg/bg builtins work. Without this option, + "cmd &" still works by simply spawning a process and immediately + prompting for next command (or executing next command in a script), + but no separate process group is formed. + +config BUSYBOX_CONFIG_HUSH_TICK + bool "Process substitution" + default n + depends on BUSYBOX_CONFIG_HUSH + help + Enable process substitution `command` and $(command) in hush. + +config BUSYBOX_CONFIG_HUSH_IF + bool "Support if/then/elif/else/fi" + default n + depends on BUSYBOX_CONFIG_HUSH + help + Enable if/then/elif/else/fi in hush. + +config BUSYBOX_CONFIG_HUSH_LOOPS + bool "Support for, while and until loops" + default n + depends on BUSYBOX_CONFIG_HUSH + help + Enable for, while and until loops in hush. config BUSYBOX_CONFIG_LASH bool "lash" default n + select BUSYBOX_CONFIG_TRUE + select BUSYBOX_CONFIG_FALSE + select BUSYBOX_CONFIG_TEST help 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 @@ -146,6 +243,9 @@ config BUSYBOX_CONFIG_LASH config BUSYBOX_CONFIG_MSH bool "msh" default n + select BUSYBOX_CONFIG_TRUE + select BUSYBOX_CONFIG_FALSE + select BUSYBOX_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 @@ -164,66 +264,57 @@ config BUSYBOX_CONFIG_FEATURE_SH_EXTRA_QUIET help Remove the busybox introduction when starting a shell. -config BUSYBOX_CONFIG_FEATURE_SH_STANDALONE_SHELL +config BUSYBOX_CONFIG_FEATURE_SH_STANDALONE bool "Standalone shell" default n - depends on BUSYBOX_CONFIG_MSH || BUSYBOX_CONFIG_LASH || BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_ASH + depends on (BUSYBOX_CONFIG_MSH || BUSYBOX_CONFIG_LASH || BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_ASH) && BUSYBOX_CONFIG_FEATURE_PREFER_APPLETS help - This option causes the selected busybox shell to use busybox applets + This option causes busybox shells to use busybox applets 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 qualified executable name, such as '/sbin/ifconfig' will still execute the /sbin/ifconfig executable on the filesystem. This option - is generally used when creating a staticly linked version of busybox + 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. - 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 - that exact location with that exact name, this option will not work at - all. - -config BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING - bool "command line editing" - default y - depends on BUSYBOX_CONFIG_MSH || BUSYBOX_CONFIG_LASH || BUSYBOX_CONFIG_HUSH || BUSYBOX_CONFIG_ASH - help - Enable command editing in shell. - -config BUSYBOX_CONFIG_FEATURE_COMMAND_HISTORY - int "history size" - default 15 - depends on BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING - help - Specify command history size in shell. - -config BUSYBOX_CONFIG_FEATURE_COMMAND_SAVEHISTORY - bool "history saving" + This is implemented by re-execing /proc/self/exe (typically) + with right parameters. Some selected applets ("NOFORK" applets) + can even be executed without creating new process. + Instead, busybox will call _main() internally. + + However, this causes problems in chroot jails without mounted /proc + and with ps/top (command name can be shown as 'exe' for applets + 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 +# 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 +# that exact location with that exact name, this option will not work at +# all. + +config BUSYBOX_CONFIG_CTTYHACK + bool "cttyhack" default n - depends on BUSYBOX_CONFIG_ASH && BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING help - Enable history saving in ash shell. + One common problem reported on the mailing list is "can't access tty; + job control turned off" error message which typically appears when + one tries to use shell with stdin/stdout opened to /dev/console. + This device is special - it cannot be a controlling tty. -config BUSYBOX_CONFIG_FEATURE_COMMAND_TAB_COMPLETION - bool "tab completion" - default y - depends on BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING - help - Enable tab completion in shell. + Proper solution is to use correct device instead of /dev/console. -config BUSYBOX_CONFIG_FEATURE_COMMAND_USERNAME_COMPLETION - bool "username completion" - default n - depends on BUSYBOX_CONFIG_FEATURE_COMMAND_TAB_COMPLETION - help - Enable username completion in shell. + cttyhack provides "quick and dirty" solution to this problem. + It analyzes stdin with various ioctls, trying to determine whether + it is a /dev/ttyN or /dev/ttySN (virtual terminal or serial line). + If it detects one, it closes stdin/out/err and reopens that device. + Then it executes given program. Usage example for /etc/inittab + (for busybox init): -config BUSYBOX_CONFIG_FEATURE_SH_FANCY_PROMPT - bool "Fancy shell prompts" - default y - depends on BUSYBOX_CONFIG_FEATURE_COMMAND_EDITING - help - Setting this option allows for prompts to use things like \w and - \$ and also using escape codes. + ::respawn:/bin/cttyhack /bin/sh endmenu