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 = c.fsConn().lookupUpdate(child)
out.Generation = child.generation
out.Ino = out.NodeId
return fuse.OK
}
func (constor *Constor) ReadDirPlus(input *fuse.ReadIn, fuseout *fuse.DirEntryList) fuse.Status {
constor.log("")
constor.log("%d", input.Offset)
ptr := uintptr(input.Fh)
offset := input.Offset
entryOut := fuse.EntryOut{}
out := (*DirEntryList)(unsafe.Pointer(fuseout))
F := constor.getfd(ptr)
stream := F.stream
if stream == nil {
return fuse.EIO
}
if offset > uint64(len(stream)) {
return fuse.EINVAL
}
todo := F.stream[offset:]
for _, e := range todo {
if e.Name == "" {
continue
}
attr := (*fuse.Attr)(&entryOut.Attr)
attr.FromStat(&e.Stat)
entryOut.NodeId = attr.Ino
entryOut.Ino = attr.Ino
ok, _ := out.AddDirLookupEntry(e, &entryOut)
if !ok {
break
}
}
return fuse.OK
}
// 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.Ino = c.fsConn().lookupUpdate(n)
out.NodeId = out.Ino
if out.Nlink == 0 {
// With Nlink == 0, newer kernels will refuse link
// operations.
out.Nlink = 1
}
}
func (constor *Constor) Lookup(header *fuse.InHeader, name string, out *fuse.EntryOut) fuse.Status {
var stat syscall.Stat_t
if len(name) > 255 {
constor.error("name too long : %s", name)
return fuse.Status(syscall.ENAMETOOLONG)
}
li := -1
parent := constor.inodemap.findInodePtr(header.NodeId)
if parent == nil {
constor.error("Unable to find parent inode : %d", header.NodeId)
return fuse.ENOENT
}
constor.log("%s(%s)", parent.id, name)
id, err := constor.getid(-1, parent.id, name)
if err != nil {
// logging this error will produce too many logs as there will be too many
// lookps on non-existant files
return fuse.ToStatus(err)
}
inode := constor.inodemap.findInodeId(id)
if inode != nil {
li = inode.layer
} else {
li = constor.getLayer(id)
}
if li == -1 {
constor.error("Unable to find inode for %s(%s) id %s", parent.id, name, id)
return fuse.ENOENT
}
err = constor.Lstat(li, id, &stat)
if err != nil {
constor.error("Unable to Lstat inode for %s(%s) id %s", parent.id, name, id)
return fuse.ToStatus(err)
}
if inode == nil {
inode = NewInode(constor, id)
inode.layer = li
constor.inodemap.hashInode(inode)
} else {
inode.lookup()
}
attr := (*fuse.Attr)(&out.Attr)
attr.FromStat(&stat)
out.NodeId = uint64(uintptr(unsafe.Pointer(inode)))
out.Ino = attr.Ino
out.EntryValid = 1000
out.AttrValid = 1000
constor.log("%s", id)
return fuse.OK
}
func (constor *Constor) Lookup(header *fuse.InHeader, name string, out *fuse.EntryOut) fuse.Status {
constor.log("%d %s", header.NodeId, name)
var stat syscall.Stat_t
parent, err := constor.inodemap.findInode(header.NodeId)
if err != nil {
return fuse.ToStatus(err)
}
path, err := constor.dentrymap.getPathName(parent.ino, name)
if err != nil {
return fuse.ToStatus(err)
}
li := constor.getLayer(path)
if li == -1 {
return fuse.ENOENT
}
pathl := Path.Join(constor.layers[li], path)
if constor.isdeleted(pathl) {
return fuse.ENOENT
}
err = constor.Lstat(path, &stat)
if err != nil {
return fuse.ToStatus(err)
}
constor.log("%s(%d) %d", path, li, stat.Ino)
inode, err := constor.inodemap.findInode(stat.Ino)
if err != nil {
inode = NewInode(constor, stat.Ino)
inode.mode = stat.Mode
inode.layer = li
constor.inodemap.hashInode(inode)
} else {
inode.layer = li
inode.lookup()
}
if dentry, err := constor.dentrymap.findDentry(parent.ino, inode.ino); err != nil {
dentry = new(Dentry)
dentry.ino = inode.ino
dentry.name = name
dentry.parentino = parent.ino
constor.dentrymap.hashDentry(dentry)
}
attr := (*fuse.Attr)(&out.Attr)
attr.FromStat(&stat)
out.NodeId = attr.Ino
out.Ino = attr.Ino
constor.log("%d", out.Ino)
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
}