func subvolSnapshot(src, dest, name string) error {
srcDir, err := openDir(src)
if err != nil {
return err
}
defer closeDir(srcDir)
destDir, err := openDir(dest)
if err != nil {
return err
}
defer closeDir(destDir)
var args C.struct_btrfs_ioctl_vol_args_v2
args.fd = C.__s64(getDirFd(srcDir))
var cs = C.CString(name)
C.set_name_btrfs_ioctl_vol_args_v2(&args, cs)
C.free(unsafe.Pointer(cs))
_, _, errno := syscall.Syscall(syscall.SYS_IOCTL, getDirFd(destDir), C.BTRFS_IOC_SNAP_CREATE_V2,
uintptr(unsafe.Pointer(&args)))
if errno != 0 {
return fmt.Errorf("Failed to create btrfs snapshot: %v", errno.Error())
}
return nil
}
func subvolSnapshot(src, dest, name string) error {
srcDir, err := openDir(src)
if err != nil {
return err
}
defer closeDir(srcDir)
destDir, err := openDir(dest)
if err != nil {
return err
}
defer closeDir(destDir)
var args C.struct_btrfs_ioctl_vol_args_v2
args.fd = C.__s64(getDirFd(srcDir))
for i, c := range []byte(name) {
args.name[i] = C.char(c)
}
_, _, errno := syscall.Syscall(syscall.SYS_IOCTL, getDirFd(destDir), C.BTRFS_IOC_SNAP_CREATE_V2,
uintptr(unsafe.Pointer(&args)))
if errno != 0 {
return fmt.Errorf("Failed to create btrfs snapshot: %v", errno.Error())
}
return nil
}
func ffiSubvolumeSnapshot(src string, dest string, readOnly bool) error {
srcDir, err := ffiOpenDir(src)
if err != nil {
return err
}
defer ffiCloseDir(srcDir)
var args C.struct_btrfs_ioctl_vol_args_v2
args.fd = C.__s64(ffiGetDirFd(srcDir))
if readOnly {
args.flags |= C.__u64(C.BTRFS_SUBVOL_RDONLY)
}
for i, c := range []byte(filepath.Base(dest)) {
args.name[i] = C.char(c)
}
return ffiIoctl(filepath.Dir(dest), C.BTRFS_IOC_SNAP_CREATE_V2, uintptr(unsafe.Pointer(&args)))
}