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unix: add ptracePtr that accepts pointer arg as unsafe.Pointer

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The existing ptrace wrapper accepts pointer argument as an uintptr which
often points to the memory allocated in Go. This violates unsafe.Pointer safety
rules.

For golang/go#58387

Change-Id: Ib3b4c50368725191f0862c6c7c6d46b0568523c7
Reviewed-on: https://go-review.googlesource.com/c/sys/+/469835
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
This commit is contained in:
Dmitri Goutnik
2023-02-21 23:06:39 +00:00
committed by Gopher Robot
parent 6877dccfc2
commit 2977c7732d
22 changed files with 127 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files
unix/zsyscall_darwin_arm64.go
+8
View File
@@ -2510,6 +2510,14 @@ func ptrace1(request int, pid int, addr uintptr, data uintptr) (err error) {
return
}
func ptrace1Ptr(request int, pid int, addr uintptr, data unsafe.Pointer) (err error) {
_, _, e1 := syscall_syscall6(libc_ptrace_trampoline_addr, uintptr(request), uintptr(pid), addr, uintptr(data), 0, 0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
var libc_ptrace_trampoline_addr uintptr
//go:cgo_import_dynamic libc_ptrace ptrace "/usr/lib/libSystem.B.dylib"