unix: add IoctlLoop{Get,Set}Status64 on linux
These ioctls are used to get/set the status of a loop device. See
https://man7.org/linux/man-pages/man4/loop.4.html for details.
Change-Id: Ia66db639e6d9326af79954eea5c8f7515aa171d1
Reviewed-on: https://go-review.googlesource.com/c/sys/+/425296
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
diff --git a/unix/ioctl_linux.go b/unix/ioctl_linux.go
index 884430b..0d12c08 100644
--- a/unix/ioctl_linux.go
+++ b/unix/ioctl_linux.go
@@ -4,9 +4,7 @@
package unix
-import (
- "unsafe"
-)
+import "unsafe"
// IoctlRetInt performs an ioctl operation specified by req on a device
// associated with opened file descriptor fd, and returns a non-negative
@@ -217,3 +215,19 @@
func IoctlKCMUnattach(fd int, info KCMUnattach) error {
return ioctlPtr(fd, SIOCKCMUNATTACH, unsafe.Pointer(&info))
}
+
+// IoctlLoopGetStatus64 gets the status of the loop device associated with the
+// file descriptor fd using the LOOP_GET_STATUS64 operation.
+func IoctlLoopGetStatus64(fd int) (*LoopInfo64, error) {
+ var value LoopInfo64
+ if err := ioctlPtr(fd, LOOP_GET_STATUS64, unsafe.Pointer(&value)); err != nil {
+ return nil, err
+ }
+ return &value, nil
+}
+
+// IoctlLoopSetStatus64 sets the status of the loop device associated with the
+// file descriptor fd using the LOOP_SET_STATUS64 operation.
+func IoctlLoopSetStatus64(fd int, value *LoopInfo64) error {
+ return ioctlPtr(fd, LOOP_SET_STATUS64, unsafe.Pointer(value))
+}
