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authorunclejack <unclejack@users.noreply.github.com>2014-04-09 01:56:01 +0300
committerunclejack <unclejack@users.noreply.github.com>2014-04-09 01:56:01 +0300
commite128a606e39fa63c6b4fd6e53a1d88cf00aad868 (patch)
tree199ee7eb6678ffecd2ddad95fce794c795ad5183 /runtime/graphdriver/devmapper/ioctl.go
parent143c9707a9fafc39e1d9747f528db97b2564f01e (diff)
parentdc9c28f51d669d6b09e81c2381f800f1a33bb659 (diff)
downloaddocker-release-0.10.tar.gz
Merge pull request #5079 from unclejack/bump_v0.10.0release-0.100.10.1-hotfixes
Bump version to v0.10.0
Diffstat (limited to 'runtime/graphdriver/devmapper/ioctl.go')
-rw-r--r--runtime/graphdriver/devmapper/ioctl.go71
1 files changed, 71 insertions, 0 deletions
diff --git a/runtime/graphdriver/devmapper/ioctl.go b/runtime/graphdriver/devmapper/ioctl.go
new file mode 100644
index 0000000000..30bafff943
--- /dev/null
+++ b/runtime/graphdriver/devmapper/ioctl.go
@@ -0,0 +1,71 @@
+// +build linux,amd64
+
+package devmapper
+
+import (
+ "unsafe"
+)
+
+func ioctlLoopCtlGetFree(fd uintptr) (int, error) {
+ index, _, err := sysSyscall(sysSysIoctl, fd, LoopCtlGetFree, 0)
+ if err != 0 {
+ return 0, err
+ }
+ return int(index), nil
+}
+
+func ioctlLoopSetFd(loopFd, sparseFd uintptr) error {
+ if _, _, err := sysSyscall(sysSysIoctl, loopFd, LoopSetFd, sparseFd); err != 0 {
+ return err
+ }
+ return nil
+}
+
+func ioctlLoopSetStatus64(loopFd uintptr, loopInfo *LoopInfo64) error {
+ if _, _, err := sysSyscall(sysSysIoctl, loopFd, LoopSetStatus64, uintptr(unsafe.Pointer(loopInfo))); err != 0 {
+ return err
+ }
+ return nil
+}
+
+func ioctlLoopClrFd(loopFd uintptr) error {
+ if _, _, err := sysSyscall(sysSysIoctl, loopFd, LoopClrFd, 0); err != 0 {
+ return err
+ }
+ return nil
+}
+
+func ioctlLoopGetStatus64(loopFd uintptr) (*LoopInfo64, error) {
+ loopInfo := &LoopInfo64{}
+
+ if _, _, err := sysSyscall(sysSysIoctl, loopFd, LoopGetStatus64, uintptr(unsafe.Pointer(loopInfo))); err != 0 {
+ return nil, err
+ }
+ return loopInfo, nil
+}
+
+func ioctlLoopSetCapacity(loopFd uintptr, value int) error {
+ if _, _, err := sysSyscall(sysSysIoctl, loopFd, LoopSetCapacity, uintptr(value)); err != 0 {
+ return err
+ }
+ return nil
+}
+
+func ioctlBlkGetSize64(fd uintptr) (int64, error) {
+ var size int64
+ if _, _, err := sysSyscall(sysSysIoctl, fd, BlkGetSize64, uintptr(unsafe.Pointer(&size))); err != 0 {
+ return 0, err
+ }
+ return size, nil
+}
+
+func ioctlBlkDiscard(fd uintptr, offset, length uint64) error {
+ var r [2]uint64
+ r[0] = offset
+ r[1] = length
+
+ if _, _, err := sysSyscall(sysSysIoctl, fd, BlkDiscard, uintptr(unsafe.Pointer(&r[0]))); err != 0 {
+ return err
+ }
+ return nil
+}