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hush: allow hush to run embedded scripts

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Embedded scripts require a shell to be present in the BusyBox
binary.  Allow either ash or hush to be used for this purpose.
If both are enabled ash takes precedence.

The size of the binary is unchanged in the default configuration:
both ash and hush are present but support for embedded scripts
isn't compiled into hush.

Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Ron Yorston
2018-11-27 14:34:25 +00:00
committed by Denys Vlasenko
parent f4709d78cb
commit 71df2d3589
10 changed files with 62 additions and 32 deletions
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14
shell/Config.src
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@@ -161,6 +161,20 @@ config FEATURE_SH_HISTFILESIZE
to set shell history size. Note that its max value is capped
by "History size" setting in library tuning section.
config FEATURE_SH_EMBEDDED_SCRIPTS
bool "Embed scripts in the binary"
default y
depends on ASH || HUSH || SH_IS_ASH || BASH_IS_ASH || SH_IS_HUSH || BASH_IS_HUSH
help
Allow scripts to be compressed and embedded in the busybox
binary. The scripts should be placed in the 'embed' directory
at build time. Like applets, scripts can be run as
'busybox SCRIPT ...' or by linking their name to the binary.
This also allows applets to be implemented as scripts: place
the script in 'applets_sh' and a stub C file containing
configuration in the appropriate subsystem directory.
endif # Options common to all shells
endmenu