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Document the detail of interaction between vfork and PT_TRACEME.

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MFC after:	2 weeks
This commit is contained in:
Konstantin Belousov 2013-02-07 15:36:24 +00:00
parent 888d4d4f86
commit 2ee83a16c0
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=246485
1 changed files with 11 additions and 1 deletions
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12
lib/libc/sys/ptrace.2
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@ -2,7 +2,7 @@
.\" $NetBSD: ptrace.2,v 1.2 1995/02/27 12:35:37 cgd Exp $
.\"
.\" This file is in the public domain.
.Dd February 19, 2012
.Dd February 7, 2013
.Dt PTRACE 2
.Os
.Sh NAME
@ -100,6 +100,16 @@ or any of the routines built on it
it will stop before executing the first instruction of the new image.
Also, any setuid or setgid bits on the executable being executed will
be ignored.
If the child was created by
.Xr vfork 2
system call or
.Xr rfork(2)
call with the
.Dv RFMEM
flag specified, the debugging events are reported to the parent
only after the
.Xr execve 2
is executed.
.It Dv PT_READ_I , Dv PT_READ_D
These requests read a single
.Vt int