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unix: only declare PtraceGetFsBase() on x86-based platforms

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Only x86-based CPUs have an FSBASE. The current code happens to build
on FreeBSD/aarch64 and FreeBSD/arm, but that's only because we
incorrectly declare PTRACE_GETFSBASE on those platforms.

Change-Id: I128c91bcdb0704a210af13806c1cd285470b5eda
GitHub-Last-Rev: 5e88573c0fde1b565d793948ee7ab54607c463b1
GitHub-Pull-Request: golang/sys#62
Reviewed-on: https://go-review.googlesource.com/c/sys/+/223697
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
This commit is contained in:
Ed Schouten
2020-03-16 21:47:34 +00:00
committed by Tobias Klauser
parent 9a0dfc3c55
commit 08c61614be
3 changed files with 8 additions and 4 deletions
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unix/syscall_freebsd_amd64.go
+4
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@@ -55,6 +55,10 @@ func sendfile(outfd int, infd int, offset *int64, count int) (written int, err e
func Syscall9(num, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)
func PtraceGetFsBase(pid int, fsbase *int64) (err error) {
return ptrace(PTRACE_GETFSBASE, pid, uintptr(unsafe.Pointer(fsbase)), 0)
}
func PtraceIO(req int, pid int, addr uintptr, out []byte, countin int) (count int, err error) {
ioDesc := PtraceIoDesc{Op: int32(req), Offs: (*byte)(unsafe.Pointer(addr)), Addr: (*byte)(unsafe.Pointer(&out[0])), Len: uint64(countin)}
err = ptrace(PTRACE_IO, pid, uintptr(unsafe.Pointer(&ioDesc)), 0)