Initial commit

Proof-of-concept implementation. Bugs will occur.

vendor/github.com/hanwen/go-fuse/v2/fs/bridge_linux.go

@@ -0,0 +1,60 @@
+package fs
+
+import (
+	"syscall"
+
+	"github.com/hanwen/go-fuse/v2/fuse"
+)
+
+// see rawBridge.setAttr
+func (b *rawBridge) setStatx(out *fuse.Statx) {
+	if !b.options.NullPermissions && out.Mode&07777 == 0 {
+		out.Mode |= 0644
+		if out.Mode&syscall.S_IFDIR != 0 {
+			out.Mode |= 0111
+		}
+	}
+	if b.options.UID != 0 && out.Uid == 0 {
+		out.Uid = b.options.UID
+	}
+	if b.options.GID != 0 && out.Gid == 0 {
+		out.Gid = b.options.GID
+	}
+	setStatxBlocks(out)
+}
+
+// see rawBridge.setAttrTimeout
+func (b *rawBridge) setStatxTimeout(out *fuse.StatxOut) {
+	if b.options.AttrTimeout != nil && out.Timeout() == 0 {
+		out.SetTimeout(*b.options.AttrTimeout)
+	}
+}
+
+func (b *rawBridge) Statx(cancel <-chan struct{}, in *fuse.StatxIn, out *fuse.StatxOut) fuse.Status {
+	n, fe := b.inode(in.NodeId, in.Fh)
+	var fh FileHandle
+	if fe != nil {
+		fh = fe.file
+	}
+
+	ctx := &fuse.Context{Caller: in.Caller, Cancel: cancel}
+
+	errno := syscall.ENOSYS
+	if sx, ok := n.ops.(NodeStatxer); ok {
+		errno = sx.Statx(ctx, fh, in.SxFlags, in.SxMask, out)
+	} else if fsx, ok := n.ops.(FileStatxer); ok {
+		errno = fsx.Statx(ctx, in.SxFlags, in.SxMask, out)
+	}
+
+	if errno == 0 {
+		if out.Ino != 0 && n.stableAttr.Ino > 1 && out.Ino != n.stableAttr.Ino {
+			b.logf("warning: rawBridge.getattr: overriding ino %d with %d", out.Ino, n.stableAttr.Ino)
+		}
+		out.Ino = n.stableAttr.Ino
+		out.Mode = (out.Statx.Mode & 07777) | uint16(n.stableAttr.Mode)
+		b.setStatx(&out.Statx)
+		b.setStatxTimeout(out)
+	}
+
+	return errnoToStatus(errno)
+}