diff options
| author |   kurt <kurt@openbsd.org> | 2008-04-04 19:30:41 +0000 |
|---|---|---|
| committer | kurt <kurt@openbsd.org> | 2008-04-04 19:30:41 +0000 |
| commit | cb2f56c4c83cf20c371119e9a0fbf1e9781a0ce3 (patch) | |
| tree | 72be69d4579d6dc0c65f1bf43aed1881dc25fe03 /lib/libc/sys/vfork.2 | |
| parent | Zero out the password/response argument in the simplified BSD auth (diff) | |
| download | wireguard-openbsd-cb2f56c4c83cf20c371119e9a0fbf1e9781a0ce3.tar.xz wireguard-openbsd-cb2f56c4c83cf20c371119e9a0fbf1e9781a0ce3.zip | |
- do not call pthread_atfork(3) handlers when a multithreaded program
calls vfork(2). "untested, but looks OK" marc@
- document vfork(2), popen(3) and system(3) don't call atfork handlers
in multithreaded programs. okay jmc@
Diffstat (limited to 'lib/libc/sys/vfork.2')
| -rw-r--r-- | lib/libc/sys/vfork.2 | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/libc/sys/vfork.2 b/lib/libc/sys/vfork.2 index c1b4b6ec798..ec0e5a75639 100644 --- a/lib/libc/sys/vfork.2 +++ b/lib/libc/sys/vfork.2 @@ -1,4 +1,4 @@ -.\" $OpenBSD: vfork.2,v 1.15 2007/05/31 19:19:34 jmc Exp $ +.\" $OpenBSD: vfork.2,v 1.16 2008/04/04 19:30:41 kurt Exp $ .\" $NetBSD: vfork.2,v 1.8 1997/07/10 07:54:13 mikel Exp $ .\" .\" Copyright (c) 1980, 1991, 1993 @@ -30,7 +30,7 @@ .\" .\" @(#)vfork.2 8.1 (Berkeley) 6/4/93 .\" -.Dd $Mdocdate: May 31 2007 $ +.Dd $Mdocdate: April 4 2008 $ .Dt VFORK 2 .Os .Sh NAME @@ -62,6 +62,10 @@ in that the parent is suspended until the child makes a call to or an exit (either by a call to .Xr _exit 2 or abnormally). +In addition, fork handlers established using +.Xr pthread_atfork 3 +are not called when a multithreaded program calls +.Fn vfork . .Pp .Fn vfork returns 0 in the child's context and (later) the PID of the child in |