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authorDenys Vlasenko2017-08-02 16:37:39 +0200
committerDenys Vlasenko2017-08-02 16:37:39 +0200
commit7c40ddd9500907925041131374cb43eb87ef5494 (patch)
tree415676f7439a3c42e2137f357c8e8904a93007cc /docs/nofork_noexec.txt
parent95f7953f2c46c7b9c799250aa8dc6eb10cc5c726 (diff)
downloadbusybox-7c40ddd9500907925041131374cb43eb87ef5494.zip
busybox-7c40ddd9500907925041131374cb43eb87ef5494.tar.gz
NOFORK fixes
"rm -i FILE" and "yes" can now be interrupted by ^C in hush. This also now works: $ usleep 19999999 ^C $ echo $? 130 function old new delta run_pipe 1668 1711 +43 pseudo_exec_argv 312 321 +9 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 52/0) Total: 52 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'docs/nofork_noexec.txt')
-rw-r--r--docs/nofork_noexec.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/docs/nofork_noexec.txt b/docs/nofork_noexec.txt
index a24dd9c..0ad4e6e 100644
--- a/docs/nofork_noexec.txt
+++ b/docs/nofork_noexec.txt
@@ -52,6 +52,9 @@ xargs, find, shells do it (grep for "spawn_and_wait" and
This poses much more serious limitations on what applet can do:
* all NOEXEC limitations apply.
+* do not run for a long time or wait for user input:
+ hush shell only handles signals (like ^C) after you return
+ from APPLET_main().
* do not ever exit() or exec().
- xfuncs are okay. They are using special trick to return
to the caller applet instead of dying when they detect "x" condition.