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unix: add IoctlGetUint32 on Linux

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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>
This commit is contained in:
Matt Layher
2019-05-08 17:10:54 -04:00
parent 12bbe5a7a5
commit 2d0786266e
1 changed files with 6 additions and 0 deletions
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6
unix/syscall_linux.go
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@@ -109,6 +109,12 @@ func IoctlGetInt(fd int, req uint) (int, error) {
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)))