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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 /coreutils/usleep.c | |
| parent | 95f7953f2c46c7b9c799250aa8dc6eb10cc5c726 (diff) | |
| download | 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 'coreutils/usleep.c')
| -rw-r--r-- | coreutils/usleep.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/coreutils/usleep.c b/coreutils/usleep.c index 7c25aada1..684ab781b 100644 --- a/coreutils/usleep.c +++ b/coreutils/usleep.c @@ -38,6 +38,13 @@ int usleep_main(int argc UNUSED_PARAM, char **argv) bb_show_usage(); } + /* Safe wrt NOFORK? (noforks are not allowed to run for + * a long time). Try "usleep 99999999" + ^C + "echo $?" + * in hush with FEATURE_SH_NOFORK=y. + * At least on uclibc, usleep() thanslates to nanosleep() + * which returns early on any signal (even caught one), + * and uclibc does not loop back on EINTR. + */ usleep(xatou(argv[1])); return EXIT_SUCCESS; |