vfs/dir.go

91 lines
2.7 KiB
Go

/*
* Copyright (c) 2015 Alex Yatskov <alex@foosoft.net>
* Author: Alex Yatskov <alex@foosoft.net>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package main
import (
"bazil.org/fuse"
"bazil.org/fuse/fs"
"golang.org/x/net/context"
"log"
)
type versionedDir struct {
dirs map[string]*versionedDir
files map[string]*versionedFile
node *versionedNode
inode uint64
parent *versionedDir
}
func newVersionedDir(node *versionedNode, inode uint64, parent *versionedDir) *versionedDir {
return &versionedDir{
dirs: make(map[string]*versionedDir),
files: make(map[string]*versionedFile),
node: node,
inode: inode,
parent: parent}
}
func (this versionedDir) Attr(attr *fuse.Attr) {
log.Printf("versionedDir::Attr: %s", this.node)
this.node.attr(attr)
attr.Inode = this.inode
}
func (this versionedDir) ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) {
log.Printf("versionedDir::ReadDirAll: %s", this.node)
entries := []fuse.Dirent{{Inode: this.inode, Name: ".", Type: fuse.DT_Dir}}
if this.parent != nil {
entry := fuse.Dirent{Inode: this.parent.inode, Name: "..", Type: fuse.DT_Dir}
entries = append(entries, entry)
}
for name, dir := range this.dirs {
entry := fuse.Dirent{Inode: dir.inode, Name: name, Type: fuse.DT_Dir}
entries = append(entries, entry)
}
for name, file := range this.files {
entry := fuse.Dirent{Inode: file.inode, Name: name, Type: fuse.DT_File}
entries = append(entries, entry)
}
return entries, nil
}
func (this versionedDir) Lookup(ctx context.Context, name string) (fs.Node, error) {
log.Printf("versionedDir::Lookup: %s", this.node)
if dir, ok := this.dirs[name]; ok {
return dir, nil
}
if file, ok := this.files[name]; ok {
return file, nil
}
return nil, fuse.ENOENT
}