unix: add IoctlGetUint32 on Linux
Because the size of int varies on different architectures,
IoctlGetInt is unsuitable for ioctl APIs which explicitly deal with
fixed size integers, such as uint32.
Change-Id: I5a8dc397b713027c4ef9f9a91490f177ac8342e2
Reviewed-on: https://go-review.googlesource.com/c/sys/+/175982
Run-TryBot: Matt Layher <mdlayher@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
diff --git a/unix/syscall_linux.go b/unix/syscall_linux.go
index c302f01..d7a8f73 100644
--- a/unix/syscall_linux.go
+++ b/unix/syscall_linux.go
@@ -109,6 +109,12 @@
return value, err
}
+func IoctlGetUint32(fd int, req uint) (uint32, error) {
+ var value uint32
+ err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
+ return value, err
+}
+
func IoctlGetWinsize(fd int, req uint) (*Winsize, error) {
var value Winsize
err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
