// childLookup fills entry information for a newly created child inode
func (c *rawBridge) childLookup(out *fuse.EntryOut, n *Inode, context *fuse.Context) {
n.Node().GetAttr((*fuse.Attr)(&out.Attr), nil, context)
n.mount.fillEntry(out)
out.NodeId, out.Generation = c.fsConn().lookupUpdate(n)
if out.Ino == 0 {
out.Ino = out.NodeId
}
if out.Nlink == 0 {
// With Nlink == 0, newer kernels will refuse link
// operations.
out.Nlink = 1
}
}
func (c *rawBridge) Lookup(header *fuse.InHeader, name string, out *fuse.EntryOut) (code fuse.Status) {
parent := c.toInode(header.NodeId)
if !parent.IsDir() {
log.Printf("Lookup %q called on non-Directory node %d", name, header.NodeId)
return fuse.ENOTDIR
}
outAttr := (*fuse.Attr)(&out.Attr)
child, code := c.fsConn().internalLookup(outAttr, parent, name, header)
if code == fuse.ENOENT && parent.mount.negativeEntry(out) {
return fuse.OK
}
if !code.Ok() {
return code
}
if child == nil {
log.Println("Lookup returned fuse.OK with nil child", name)
}
child.mount.fillEntry(out)
out.NodeId, out.Generation = c.fsConn().lookupUpdate(child)
if out.Ino == 0 {
out.Ino = out.NodeId
}
return fuse.OK
}
func (m *fileSystemMount) fillEntry(out *fuse.EntryOut) {
splitDuration(m.options.EntryTimeout, &out.EntryValid, &out.EntryValidNsec)
splitDuration(m.options.AttrTimeout, &out.AttrValid, &out.AttrValidNsec)
m.setOwner(&out.Attr)
if out.Mode&fuse.S_IFDIR == 0 && out.Nlink == 0 {
out.Nlink = 1
}
}
// Creates a return entry for a non-existent path.
func (m *fileSystemMount) negativeEntry(out *fuse.EntryOut) bool {
if m.options.NegativeTimeout > 0.0 {
out.NodeId = 0
splitDuration(m.options.NegativeTimeout, &out.EntryValid, &out.EntryValidNsec)
return true
}
return false
}