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| author | Denis Vlasenko <vda.linux@googlemail.com> | 2007-05-08 17:27:17 +0000 |
|---|---|---|
| committer | Denis Vlasenko <vda.linux@googlemail.com> | 2007-05-08 17:27:17 +0000 |
| commit | 92c0b8222eb50dd35c06e2f1265706b388762234 (patch) | |
| tree | c94def6f5c4cfbbcc1a7a70d96e721eb433ed01f /shell/Config.in | |
| parent | 0cacc80952a7a34f9cb8b384d6dd0b1522c37bae (diff) | |
| download | busybox-w32-92c0b8222eb50dd35c06e2f1265706b388762234.tar.gz busybox-w32-92c0b8222eb50dd35c06e2f1265706b388762234.tar.bz2 busybox-w32-92c0b8222eb50dd35c06e2f1265706b388762234.zip | |
tail: fix SEGV on "tail -N"
config system: clarify PREFER_APPLETS/SH_STANDALONE effects in help text
Diffstat (limited to '')
| -rw-r--r-- | shell/Config.in | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/shell/Config.in b/shell/Config.in index f3726e302..027993483 100644 --- a/shell/Config.in +++ b/shell/Config.in | |||
| @@ -242,7 +242,7 @@ config FEATURE_SH_STANDALONE | |||
| 242 | default n | 242 | default n |
| 243 | depends on (MSH || LASH || HUSH || ASH) && FEATURE_PREFER_APPLETS | 243 | depends on (MSH || LASH || HUSH || ASH) && FEATURE_PREFER_APPLETS |
| 244 | help | 244 | help |
| 245 | This option causes the selected busybox shell to use busybox applets | 245 | This option causes busybox shells to use busybox applets |
| 246 | in preference to executables in the PATH whenever possible. For | 246 | in preference to executables in the PATH whenever possible. For |
| 247 | example, entering the command 'ifconfig' into the shell would cause | 247 | example, entering the command 'ifconfig' into the shell would cause |
| 248 | busybox to use the ifconfig busybox applet. Specifying the fully | 248 | busybox to use the ifconfig busybox applet. Specifying the fully |
| @@ -251,14 +251,23 @@ config FEATURE_SH_STANDALONE | |||
| 251 | is generally used when creating a statically linked version of busybox | 251 | is generally used when creating a statically linked version of busybox |
| 252 | for use as a rescue shell, in the event that you screw up your system. | 252 | for use as a rescue shell, in the event that you screw up your system. |
| 253 | 253 | ||
| 254 | Note that this will *also* cause applets to take precedence | 254 | This is implemented by re-execing /proc/self/exe (typically) |
| 255 | over shell builtins of the same name. So turning this on will | 255 | with right parameters. Some selected applets ("NOFORK" applets) |
| 256 | eliminate any performance gained by turning on the builtin "echo" | 256 | can even be executed without creating new process. |
| 257 | and "test" commands in ash. | 257 | Instead, busybox will call <applet>_main() internally. |
| 258 | 258 | ||
| 259 | Note that when using this option, the shell will attempt to directly | 259 | However, this causes problems in chroot jails without mounted /proc |
| 260 | run '/bin/busybox'. If you do not have the busybox binary sitting in | 260 | and with ps/top (command name can be shown as 'exe' for applets |
| 261 | that exact location with that exact name, this option will not work at | 261 | started this way). |
| 262 | all. | 262 | # untrue? |
| 263 | # Note that this will *also* cause applets to take precedence | ||
| 264 | # over shell builtins of the same name. So turning this on will | ||
| 265 | # eliminate any performance gained by turning on the builtin "echo" | ||
| 266 | # and "test" commands in ash. | ||
| 267 | # untrue? | ||
| 268 | # Note that when using this option, the shell will attempt to directly | ||
| 269 | # run '/bin/busybox'. If you do not have the busybox binary sitting in | ||
| 270 | # that exact location with that exact name, this option will not work at | ||
| 271 | # all. | ||
| 263 | 272 | ||
| 264 | endmenu | 273 | endmenu |