From: Dave Cheney <dave@cheney.net>
Date: Fri, 31 Aug 2012 23:17:14 +0000 (+1000)
Subject: syscall: add PtraceSyscall(pid int, signal int)
X-Git-Tag: go1.1rc2~2549
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=dd79b330c9115a62a482c655edb7911c8121744c;p=gostls13.git

syscall: add PtraceSyscall(pid int, signal int)

Fixes #3525.

PTRACE_SYSCALL behaves like PTRACE_CONT and can deliver
a signal to the process. Ideally PtraceSingleStep should
support the signal argument, but its interface is frozen
by Go1.

R=golang-dev, r, rsc
CC=golang-dev
https://golang.org/cl/6353051
---

diff --git a/src/pkg/syscall/syscall_linux.go b/src/pkg/syscall/syscall_linux.go
index 7b79073eb1..fbe6b04576 100644
--- a/src/pkg/syscall/syscall_linux.go
+++ b/src/pkg/syscall/syscall_linux.go
@@ -735,6 +735,10 @@ func PtraceCont(pid int, signal int) (err error) {
 	return ptrace(PTRACE_CONT, pid, 0, uintptr(signal))
 }
 
+func PtraceSyscall(pid int, signal int) (err error) {
+	return ptrace(PTRACE_SYSCALL, pid, 0, uintptr(signal))
+}
+
 func PtraceSingleStep(pid int) (err error) { return ptrace(PTRACE_SINGLESTEP, pid, 0, 0) }
 
 func PtraceAttach(pid int) (err error) { return ptrace(PTRACE_ATTACH, pid, 0, 0) }