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Document the recently added pl_syscall_* fields in struct ptrace_lwpinfo.

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Reviewed by:	emaste, kib
Differential Revision:	https://reviews.freebsd.org/D3833
This commit is contained in:
John Baldwin 2015-10-07 17:52:18 +00:00
parent b1bddf4039
commit d07c923bda
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=288993
1 changed files with 24 additions and 1 deletions
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25
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 July 3, 2015
.Dd October 6, 2015
.Dt PTRACE 2
.Os
.Sh NAME
@ -307,6 +307,8 @@ struct ptrace_lwpinfo {
siginfo_t pl_siginfo;
char pl_tdname[MAXCOMLEN + 1];
int pl_child_pid;
u_int pl_syscall_code;
u_int pl_syscall_narg;
};
.Ed
.Pp
@ -395,6 +397,27 @@ stop when
.Dv PL_FLAG_FORKED
is set in
.Va pl_flags .
.It pl_syscall_code
The ABI-specific identifier of the current system call.
Note that for indirect system calls this field reports the indirected
system call.
Only valid when
.Dv PL_FLAG_SCE
or
.Dv PL_FLAG_SCX
is set in
.Va pl_flags.
.It pl_syscall_narg
The number of arguments passed to the current system call not counting
the system call identifier.
Note that for indirect system calls this field reports the arguments
passed to the indirected system call.
Only valid when
.Dv PL_FLAG_SCE
or
.Dv PL_FLAG_SCX
is set in
.Va pl_flags.
.El
.It PT_GETNUMLWPS
This request returns the number of kernel threads associated with the