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| author | Denys Vlasenko <vda.linux@googlemail.com> | 2010-06-04 20:10:51 +0200 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2010-06-04 20:10:51 +0200 |
| commit | da929a95aace0e79fbc621af2ab03c76d74d5fcb (patch) | |
| tree | 2b7dd63658eef78fde7604772d9815283c2c1cdf /shell/Config.src | |
| parent | e4070cb0d7586037c6fcf0f0f00d8d5b97f649d3 (diff) | |
| download | busybox-w32-da929a95aace0e79fbc621af2ab03c76d74d5fcb.tar.gz busybox-w32-da929a95aace0e79fbc621af2ab03c76d74d5fcb.tar.bz2 busybox-w32-da929a95aace0e79fbc621af2ab03c76d74d5fcb.zip | |
mass renaming Kbuild -> Kbuild.src, Config.in -> Config.src
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'shell/Config.src')
| -rw-r--r-- | shell/Config.src | 396 |
1 files changed, 396 insertions, 0 deletions
diff --git a/shell/Config.src b/shell/Config.src new file mode 100644 index 000000000..286a3415e --- /dev/null +++ b/shell/Config.src | |||
| @@ -0,0 +1,396 @@ | |||
| 1 | # | ||
| 2 | # For a description of the syntax of this configuration file, | ||
| 3 | # see scripts/kbuild/config-language.txt. | ||
| 4 | # | ||
| 5 | |||
| 6 | menu "Shells" | ||
| 7 | |||
| 8 | choice | ||
| 9 | prompt "Choose which shell is aliased to 'sh' name" | ||
| 10 | default FEATURE_SH_IS_NONE | ||
| 11 | help | ||
| 12 | Choose which shell you want to be executed by 'sh' alias. | ||
| 13 | The ash shell is the most bash compatible and full featured one. | ||
| 14 | |||
| 15 | config FEATURE_SH_IS_ASH | ||
| 16 | select ASH | ||
| 17 | bool "ash" | ||
| 18 | depends on !NOMMU | ||
| 19 | |||
| 20 | config FEATURE_SH_IS_HUSH | ||
| 21 | select HUSH | ||
| 22 | bool "hush" | ||
| 23 | |||
| 24 | config FEATURE_SH_IS_NONE | ||
| 25 | bool "none" | ||
| 26 | |||
| 27 | endchoice | ||
| 28 | |||
| 29 | choice | ||
| 30 | prompt "Choose which shell is aliased to 'bash' name" | ||
| 31 | default FEATURE_BASH_IS_NONE | ||
| 32 | help | ||
| 33 | Choose which shell you want to be executed by 'bash' alias. | ||
| 34 | The ash shell is the most bash compatible and full featured one. | ||
| 35 | |||
| 36 | Note that selecting this option does not switch on any bash | ||
| 37 | compatibility code. It merely makes it possible to install | ||
| 38 | /bin/bash (sym)link and run scripts which start with | ||
| 39 | #!/bin/bash line. | ||
| 40 | |||
| 41 | Many systems use it in scripts which use bash-specific features, | ||
| 42 | even simple ones like $RANDOM. Without this option, busybox | ||
| 43 | can't be used for running them because it won't recongnize | ||
| 44 | "bash" as a supported applet name. | ||
| 45 | |||
| 46 | config FEATURE_BASH_IS_ASH | ||
| 47 | select ASH | ||
| 48 | bool "ash" | ||
| 49 | depends on !NOMMU | ||
| 50 | |||
| 51 | config FEATURE_BASH_IS_HUSH | ||
| 52 | select HUSH | ||
| 53 | bool "hush" | ||
| 54 | |||
| 55 | config FEATURE_BASH_IS_NONE | ||
| 56 | bool "none" | ||
| 57 | |||
| 58 | endchoice | ||
| 59 | |||
| 60 | config ASH | ||
| 61 | bool "ash" | ||
| 62 | default n | ||
| 63 | depends on !NOMMU | ||
| 64 | help | ||
| 65 | Tha 'ash' shell adds about 60k in the default configuration and is | ||
| 66 | the most complete and most pedantically correct shell included with | ||
| 67 | busybox. This shell is actually a derivative of the Debian 'dash' | ||
| 68 | shell (by Herbert Xu), which was created by porting the 'ash' shell | ||
| 69 | (written by Kenneth Almquist) from NetBSD. | ||
| 70 | |||
| 71 | config ASH_BASH_COMPAT | ||
| 72 | bool "bash-compatible extensions" | ||
| 73 | default y | ||
| 74 | depends on ASH | ||
| 75 | help | ||
| 76 | Enable bash-compatible extensions. | ||
| 77 | |||
| 78 | config ASH_JOB_CONTROL | ||
| 79 | bool "Job control" | ||
| 80 | default y | ||
| 81 | depends on ASH | ||
| 82 | help | ||
| 83 | Enable job control in the ash shell. | ||
| 84 | |||
| 85 | config ASH_ALIAS | ||
| 86 | bool "alias support" | ||
| 87 | default y | ||
| 88 | depends on ASH | ||
| 89 | help | ||
| 90 | Enable alias support in the ash shell. | ||
| 91 | |||
| 92 | config ASH_GETOPTS | ||
| 93 | bool "Builtin getopt to parse positional parameters" | ||
| 94 | default n | ||
| 95 | depends on ASH | ||
| 96 | help | ||
| 97 | Enable getopts builtin in the ash shell. | ||
| 98 | |||
| 99 | config ASH_BUILTIN_ECHO | ||
| 100 | bool "Builtin version of 'echo'" | ||
| 101 | default y | ||
| 102 | depends on ASH | ||
| 103 | help | ||
| 104 | Enable support for echo, builtin to ash. | ||
| 105 | |||
| 106 | config ASH_BUILTIN_PRINTF | ||
| 107 | bool "Builtin version of 'printf'" | ||
| 108 | default y | ||
| 109 | depends on ASH | ||
| 110 | help | ||
| 111 | Enable support for printf, builtin to ash. | ||
| 112 | |||
| 113 | config ASH_BUILTIN_TEST | ||
| 114 | bool "Builtin version of 'test'" | ||
| 115 | default y | ||
| 116 | depends on ASH | ||
| 117 | help | ||
| 118 | Enable support for test, builtin to ash. | ||
| 119 | |||
| 120 | config ASH_CMDCMD | ||
| 121 | bool "'command' command to override shell builtins" | ||
| 122 | default n | ||
| 123 | depends on ASH | ||
| 124 | help | ||
| 125 | Enable support for the ash 'command' builtin, which allows | ||
| 126 | you to run the specified command with the specified arguments, | ||
| 127 | even when there is an ash builtin command with the same name. | ||
| 128 | |||
| 129 | config ASH_MAIL | ||
| 130 | bool "Check for new mail on interactive shells" | ||
| 131 | default y | ||
| 132 | depends on ASH | ||
| 133 | help | ||
| 134 | Enable "check for new mail" in the ash shell. | ||
| 135 | |||
| 136 | config ASH_OPTIMIZE_FOR_SIZE | ||
| 137 | bool "Optimize for size instead of speed" | ||
| 138 | default y | ||
| 139 | depends on ASH | ||
| 140 | help | ||
| 141 | Compile ash for reduced size at the price of speed. | ||
| 142 | |||
| 143 | config ASH_RANDOM_SUPPORT | ||
| 144 | bool "Pseudorandom generator and $RANDOM variable" | ||
| 145 | default n | ||
| 146 | depends on ASH | ||
| 147 | help | ||
| 148 | Enable pseudorandom generator and dynamic variable "$RANDOM". | ||
| 149 | Each read of "$RANDOM" will generate a new pseudorandom value. | ||
| 150 | You can reset the generator by using a specified start value. | ||
| 151 | After "unset RANDOM" the generator will switch off and this | ||
| 152 | variable will no longer have special treatment. | ||
| 153 | |||
| 154 | config ASH_EXPAND_PRMT | ||
| 155 | bool "Expand prompt string" | ||
| 156 | default n | ||
| 157 | depends on ASH | ||
| 158 | help | ||
| 159 | "PS#" may contain volatile content, such as backquote commands. | ||
| 160 | This option recreates the prompt string from the environment | ||
| 161 | variable each time it is displayed. | ||
| 162 | |||
| 163 | config HUSH | ||
| 164 | bool "hush" | ||
| 165 | default n | ||
| 166 | help | ||
| 167 | hush is a small shell (22k). It handles the normal flow control | ||
| 168 | constructs such as if/then/elif/else/fi, for/in/do/done, while loops, | ||
| 169 | case/esac. Redirections, here documents, $((arithmetic)) | ||
| 170 | and functions are supported. | ||
| 171 | |||
| 172 | It will compile and work on no-mmu systems. | ||
| 173 | |||
| 174 | It does not handle select, aliases, brace expansion, | ||
| 175 | tilde expansion, &>file and >&file redirection of stdout+stderr. | ||
| 176 | |||
| 177 | config HUSH_BASH_COMPAT | ||
| 178 | bool "bash-compatible extensions" | ||
| 179 | default y | ||
| 180 | depends on HUSH | ||
| 181 | help | ||
| 182 | Enable bash-compatible extensions. | ||
| 183 | |||
| 184 | config HUSH_HELP | ||
| 185 | bool "help builtin" | ||
| 186 | default n | ||
| 187 | depends on HUSH | ||
| 188 | help | ||
| 189 | Enable help builtin in hush. Code size + ~1 kbyte. | ||
| 190 | |||
| 191 | config HUSH_INTERACTIVE | ||
| 192 | bool "Interactive mode" | ||
| 193 | default y | ||
| 194 | depends on HUSH | ||
| 195 | help | ||
| 196 | Enable interactive mode (prompt and command editing). | ||
| 197 | Without this, hush simply reads and executes commands | ||
| 198 | from stdin just like a shell script from a file. | ||
| 199 | No prompt, no PS1/PS2 magic shell variables. | ||
| 200 | |||
| 201 | config HUSH_JOB | ||
| 202 | bool "Job control" | ||
| 203 | default n | ||
| 204 | depends on HUSH_INTERACTIVE | ||
| 205 | help | ||
| 206 | Enable job control: Ctrl-Z backgrounds, Ctrl-C interrupts current | ||
| 207 | command (not entire shell), fg/bg builtins work. Without this option, | ||
| 208 | "cmd &" still works by simply spawning a process and immediately | ||
| 209 | prompting for next command (or executing next command in a script), | ||
| 210 | but no separate process group is formed. | ||
| 211 | |||
| 212 | config HUSH_TICK | ||
| 213 | bool "Process substitution" | ||
| 214 | default n | ||
| 215 | depends on HUSH | ||
| 216 | help | ||
| 217 | Enable process substitution `command` and $(command) in hush. | ||
| 218 | |||
| 219 | config HUSH_IF | ||
| 220 | bool "Support if/then/elif/else/fi" | ||
| 221 | default n | ||
| 222 | depends on HUSH | ||
| 223 | help | ||
| 224 | Enable if/then/elif/else/fi in hush. | ||
| 225 | |||
| 226 | config HUSH_LOOPS | ||
| 227 | bool "Support for, while and until loops" | ||
| 228 | default n | ||
| 229 | depends on HUSH | ||
| 230 | help | ||
| 231 | Enable for, while and until loops in hush. | ||
| 232 | |||
| 233 | config HUSH_CASE | ||
| 234 | bool "Support case ... esac statement" | ||
| 235 | default n | ||
| 236 | depends on HUSH | ||
| 237 | help | ||
| 238 | Enable case ... esac statement in hush. +400 bytes. | ||
| 239 | |||
| 240 | config HUSH_FUNCTIONS | ||
| 241 | bool "Support funcname() { commands; } syntax" | ||
| 242 | default n | ||
| 243 | depends on HUSH | ||
| 244 | help | ||
| 245 | Enable support for shell functions in hush. +800 bytes. | ||
| 246 | |||
| 247 | config HUSH_LOCAL | ||
| 248 | bool "Support local builtin" | ||
| 249 | default n | ||
| 250 | depends on HUSH_FUNCTIONS | ||
| 251 | help | ||
| 252 | Enable support for local variables in functions. | ||
| 253 | |||
| 254 | config HUSH_EXPORT_N | ||
| 255 | bool "Support export '-n' option" | ||
| 256 | default n | ||
| 257 | depends on HUSH | ||
| 258 | help | ||
| 259 | Enable support for export '-n' option in hush. It is a bash extension. | ||
| 260 | |||
| 261 | config HUSH_RANDOM_SUPPORT | ||
| 262 | bool "Pseudorandom generator and $RANDOM variable" | ||
| 263 | default n | ||
| 264 | depends on HUSH | ||
| 265 | help | ||
| 266 | Enable pseudorandom generator and dynamic variable "$RANDOM". | ||
| 267 | Each read of "$RANDOM" will generate a new pseudorandom value. | ||
| 268 | |||
| 269 | config LASH | ||
| 270 | bool "lash (deprecated: aliased to hush)" | ||
| 271 | default n | ||
| 272 | select HUSH | ||
| 273 | help | ||
| 274 | lash is deprecated and will be removed, please migrate to hush. | ||
| 275 | |||
| 276 | config MSH | ||
| 277 | bool "msh (deprecated: please use hush)" | ||
| 278 | default n | ||
| 279 | select HUSH | ||
| 280 | help | ||
| 281 | msh is deprecated and will be removed, please migrate to hush. | ||
| 282 | If there is a feature msh has but hush does not, please let us know. | ||
| 283 | |||
| 284 | # The minix shell (adds just 30k) is quite complete and handles things | ||
| 285 | # like for/do/done, case/esac and all the things you expect a Bourne | ||
| 286 | # shell to do. It is not always pedantically correct about Bourne | ||
| 287 | # shell grammar (try running the shell testscript "tests/sh.testcases" | ||
| 288 | # on it and compare vs bash) but for most things it works quite well. | ||
| 289 | # It uses only vfork, so it can be used on uClinux systems. | ||
| 290 | |||
| 291 | |||
| 292 | config SH_MATH_SUPPORT | ||
| 293 | bool "POSIX math support" | ||
| 294 | default y | ||
| 295 | depends on ASH || HUSH | ||
| 296 | help | ||
| 297 | Enable math support in the shell via $((...)) syntax. | ||
| 298 | |||
| 299 | config SH_MATH_SUPPORT_64 | ||
| 300 | bool "Extend POSIX math support to 64 bit" | ||
| 301 | default n | ||
| 302 | depends on SH_MATH_SUPPORT | ||
| 303 | help | ||
| 304 | Enable 64-bit math support in the shell. This will make the shell | ||
| 305 | slightly larger, but will allow computation with very large numbers. | ||
| 306 | This is not in POSIX, so do not rely on this in portable code. | ||
| 307 | |||
| 308 | config FEATURE_SH_EXTRA_QUIET | ||
| 309 | bool "Hide message on interactive shell startup" | ||
| 310 | default n | ||
| 311 | depends on MSH || LASH || HUSH || ASH | ||
| 312 | help | ||
| 313 | Remove the busybox introduction when starting a shell. | ||
| 314 | |||
| 315 | config FEATURE_SH_STANDALONE | ||
| 316 | bool "Standalone shell" | ||
| 317 | default n | ||
| 318 | depends on (MSH || LASH || HUSH || ASH) && FEATURE_PREFER_APPLETS | ||
| 319 | help | ||
| 320 | This option causes busybox shells to use busybox applets | ||
| 321 | in preference to executables in the PATH whenever possible. For | ||
| 322 | example, entering the command 'ifconfig' into the shell would cause | ||
| 323 | busybox to use the ifconfig busybox applet. Specifying the fully | ||
| 324 | qualified executable name, such as '/sbin/ifconfig' will still | ||
| 325 | execute the /sbin/ifconfig executable on the filesystem. This option | ||
| 326 | is generally used when creating a statically linked version of busybox | ||
| 327 | for use as a rescue shell, in the event that you screw up your system. | ||
| 328 | |||
| 329 | This is implemented by re-execing /proc/self/exe (typically) | ||
| 330 | with right parameters. Some selected applets ("NOFORK" applets) | ||
| 331 | can even be executed without creating new process. | ||
| 332 | Instead, busybox will call <applet>_main() internally. | ||
| 333 | |||
| 334 | However, this causes problems in chroot jails without mounted /proc | ||
| 335 | and with ps/top (command name can be shown as 'exe' for applets | ||
| 336 | started this way). | ||
| 337 | # untrue? | ||
| 338 | # Note that this will *also* cause applets to take precedence | ||
| 339 | # over shell builtins of the same name. So turning this on will | ||
| 340 | # eliminate any performance gained by turning on the builtin "echo" | ||
| 341 | # and "test" commands in ash. | ||
| 342 | # untrue? | ||
| 343 | # Note that when using this option, the shell will attempt to directly | ||
| 344 | # run '/bin/busybox'. If you do not have the busybox binary sitting in | ||
| 345 | # that exact location with that exact name, this option will not work at | ||
| 346 | # all. | ||
| 347 | |||
| 348 | config FEATURE_SH_NOFORK | ||
| 349 | bool "Run 'nofork' applets directly" | ||
| 350 | default n | ||
| 351 | depends on (MSH || LASH || HUSH || ASH) && FEATURE_PREFER_APPLETS | ||
| 352 | help | ||
| 353 | This option causes busybox shells [currently only ash] | ||
| 354 | to not execute typical fork/exec/wait sequence, but call <applet>_main | ||
| 355 | directly, if possible. (Sometimes it is not possible: for example, | ||
| 356 | this is not possible in pipes). | ||
| 357 | |||
| 358 | This will be done only for some applets (those which are marked | ||
| 359 | NOFORK in include/applets.h). | ||
| 360 | |||
| 361 | This may significantly speed up some shell scripts. | ||
| 362 | |||
| 363 | This feature is relatively new. Use with care. | ||
| 364 | |||
| 365 | config CTTYHACK | ||
| 366 | bool "cttyhack" | ||
| 367 | default n | ||
| 368 | help | ||
| 369 | One common problem reported on the mailing list is "can't access tty; | ||
| 370 | job control turned off" error message which typically appears when | ||
| 371 | one tries to use shell with stdin/stdout opened to /dev/console. | ||
| 372 | This device is special - it cannot be a controlling tty. | ||
| 373 | |||
| 374 | Proper solution is to use correct device instead of /dev/console. | ||
| 375 | |||
| 376 | cttyhack provides "quick and dirty" solution to this problem. | ||
| 377 | It analyzes stdin with various ioctls, trying to determine whether | ||
| 378 | it is a /dev/ttyN or /dev/ttySN (virtual terminal or serial line). | ||
| 379 | If it detects one, it closes stdin/out/err and reopens that device. | ||
| 380 | Then it executes given program. Opening the device will make | ||
| 381 | that device a controlling tty. This may require cttyhack | ||
| 382 | to be a session leader. | ||
| 383 | |||
| 384 | Example for /etc/inittab (for busybox init): | ||
| 385 | |||
| 386 | ::respawn:/bin/cttyhack /bin/sh | ||
| 387 | |||
| 388 | Giving controlling tty to shell running with PID 1: | ||
| 389 | |||
| 390 | $ exec cttyhack sh | ||
| 391 | |||
| 392 | Starting an interactive shell from boot shell script: | ||
| 393 | |||
| 394 | setsid cttyhack sh | ||
| 395 | |||
| 396 | endmenu | ||
