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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/zptrace_x86_linux.go
+4 -4
View File
@@ -31,12 +31,12 @@ type PtraceRegs386 struct {
// PtraceGetRegs386 fetches the registers used by 386 binaries.
func PtraceGetRegs386(pid int, regsout *PtraceRegs386) error {
return ptrace(PTRACE_GETREGS, pid, 0, uintptr(unsafe.Pointer(regsout)))
return ptracePtr(PTRACE_GETREGS, pid, 0, unsafe.Pointer(regsout))
}
// PtraceSetRegs386 sets the registers used by 386 binaries.
func PtraceSetRegs386(pid int, regs *PtraceRegs386) error {
return ptrace(PTRACE_SETREGS, pid, 0, uintptr(unsafe.Pointer(regs)))
return ptracePtr(PTRACE_SETREGS, pid, 0, unsafe.Pointer(regs))
}
// PtraceRegsAmd64 is the registers used by amd64 binaries.
@@ -72,10 +72,10 @@ type PtraceRegsAmd64 struct {
// PtraceGetRegsAmd64 fetches the registers used by amd64 binaries.
func PtraceGetRegsAmd64(pid int, regsout *PtraceRegsAmd64) error {
return ptrace(PTRACE_GETREGS, pid, 0, uintptr(unsafe.Pointer(regsout)))
return ptracePtr(PTRACE_GETREGS, pid, 0, unsafe.Pointer(regsout))
}
// PtraceSetRegsAmd64 sets the registers used by amd64 binaries.
func PtraceSetRegsAmd64(pid int, regs *PtraceRegsAmd64) error {
return ptrace(PTRACE_SETREGS, pid, 0, uintptr(unsafe.Pointer(regs)))
return ptracePtr(PTRACE_SETREGS, pid, 0, unsafe.Pointer(regs))
}