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| author | kib <kib@FreeBSD.org> | 2017-07-21 18:12:35 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2017-07-21 18:12:35 +0000 |
| commit | c6fc45c2f8ba021b7d7f384106b810ea81b2233c (patch) | |
| tree | e186a29474d217489379f3c7b15863c234a651c7 /lib | |
| parent | e4115a47691081caf7caf89104b0139ef5e3c9cb (diff) | |
| download | FreeBSD-src-c6fc45c2f8ba021b7d7f384106b810ea81b2233c.zip FreeBSD-src-c6fc45c2f8ba021b7d7f384106b810ea81b2233c.tar.gz | |
MFC r319875:
Add ptrace(PT_GET_SC_ARGS) command to return debuggee' current syscall
arguments.
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/libc/sys/ptrace.2 | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/lib/libc/sys/ptrace.2 b/lib/libc/sys/ptrace.2 index 8eb26dd..b8968eb 100644 --- a/lib/libc/sys/ptrace.2 +++ b/lib/libc/sys/ptrace.2 @@ -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 August 29, 2016 +.Dd June 11, 2017 .Dt PTRACE 2 .Os .Sh NAME @@ -643,6 +643,26 @@ and .Fa data arguments are used the same as for .Dv PT_CONTINUE. +.It Dv PT_GET_SC_ARGS +For the thread which is stopped in either +.Dv PL_FLAG_SCE +or +.Dv PL_FLAG_SCX +state, that is, on entry or exit to a syscall, +this request fetches the syscall arguments. +.Pp +The arguments are copied out into the buffer pointed to by the +.Fa addr +pointer, sequentially. +Each syscall argument is stored as the machine word. +Kernel copies out as many arguments as the syscall accepts, +see the +.Va pl_syscall_narg +member of the +.Vt struct ptrace_lwpinfo , +but not more than the +.Fa data +bytes in total are copied. .It Dv PT_FOLLOW_FORK This request controls tracing for new child processes of a traced process. If |
