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| author | Denys Vlasenko <vda.linux@googlemail.com> | 2017-08-02 16:37:39 +0200 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2017-08-02 16:37:39 +0200 |
| commit | 7c40ddd9500907925041131374cb43eb87ef5494 (patch) | |
| tree | 415676f7439a3c42e2137f357c8e8904a93007cc /docs/nofork_noexec.txt | |
| parent | 95f7953f2c46c7b9c799250aa8dc6eb10cc5c726 (diff) | |
| download | busybox-w32-7c40ddd9500907925041131374cb43eb87ef5494.tar.gz busybox-w32-7c40ddd9500907925041131374cb43eb87ef5494.tar.bz2 busybox-w32-7c40ddd9500907925041131374cb43eb87ef5494.zip | |
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.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/docs/nofork_noexec.txt b/docs/nofork_noexec.txt index a24dd9c27..0ad4e6e60 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 | |||
| 52 | This poses much more serious limitations on what applet can do: | 52 | This poses much more serious limitations on what applet can do: |
| 53 | 53 | ||
| 54 | * all NOEXEC limitations apply. | 54 | * all NOEXEC limitations apply. |
| 55 | * do not run for a long time or wait for user input: | ||
| 56 | hush shell only handles signals (like ^C) after you return | ||
| 57 | from APPLET_main(). | ||
| 55 | * do not ever exit() or exec(). | 58 | * do not ever exit() or exec(). |
| 56 | - xfuncs are okay. They are using special trick to return | 59 | - xfuncs are okay. They are using special trick to return |
| 57 | to the caller applet instead of dying when they detect "x" condition. | 60 | to the caller applet instead of dying when they detect "x" condition. |