Merge pull request #644 from AkihiroSuda/armv7

support compilation for armv7

vendor/github.com/stevvooe/continuity/sysx/copy_linux_arm.go

@@ -0,0 +1,20 @@
+// mksyscall.pl -l32 copy_linux.go
+// MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT
+
+package sysx
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
+func CopyFileRange(fdin uintptr, offin *int64, fdout uintptr, offout *int64, len int, flags int) (n int, err error) {
+	r0, _, e1 := syscall.Syscall6(SYS_COPY_FILE_RANGE, uintptr(fdin), uintptr(unsafe.Pointer(offin)), uintptr(fdout), uintptr(unsafe.Pointer(offout)), uintptr(len), uintptr(flags))
+	n = int(r0)
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}

vendor/github.com/stevvooe/continuity/sysx/sysnum_linux_arm.go

@@ -0,0 +1,7 @@
+package sysx
+
+const (
+	// SYS_COPY_FILE_RANGE defined in Kernel 4.5+
+	// Number defined in /usr/include/arm-linux-gnueabihf/asm/unistd.h
+	SYS_COPY_FILE_RANGE = 391
+)

vendor/github.com/stevvooe/go-btrfs/btrfs.go

@@ -365,7 +365,7 @@ func openSubvolDir(path string) (*os.File, error) {
 }
 
 func isStatfsSubvol(statfs *syscall.Statfs_t) error {
-	if statfs.Type != C.BTRFS_SUPER_MAGIC {
+	if int64(statfs.Type) != int64(C.BTRFS_SUPER_MAGIC) {
 		return errors.Errorf("not a btrfs filesystem")
 	}