mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-01-19 02:48:24 +00:00
97 lines
1.7 KiB
Go
97 lines
1.7 KiB
Go
package mount
|
|
|
|
import (
|
|
"github.com/chrislusf/seaweedfs/weed/glog"
|
|
"github.com/chrislusf/seaweedfs/weed/util"
|
|
"sync"
|
|
)
|
|
|
|
type InodeToPath struct {
|
|
sync.RWMutex
|
|
nextInodeId uint64
|
|
inode2path map[uint64]util.FullPath
|
|
path2inode map[util.FullPath]uint64
|
|
}
|
|
|
|
func NewInodeToPath() *InodeToPath {
|
|
return &InodeToPath{
|
|
inode2path: make(map[uint64]util.FullPath),
|
|
path2inode: make(map[util.FullPath]uint64),
|
|
nextInodeId: 2, // the root inode id is 1
|
|
}
|
|
}
|
|
|
|
func (i *InodeToPath) GetInode(path util.FullPath) uint64 {
|
|
if path == "/" {
|
|
return 1
|
|
}
|
|
i.Lock()
|
|
defer i.Unlock()
|
|
inode, found := i.path2inode[path]
|
|
if !found {
|
|
inode = i.nextInodeId
|
|
i.nextInodeId++
|
|
i.path2inode[path] = inode
|
|
i.inode2path[inode] = path
|
|
}
|
|
return inode
|
|
}
|
|
|
|
func (i *InodeToPath) GetPath(inode uint64) util.FullPath {
|
|
if inode == 1 {
|
|
return "/"
|
|
}
|
|
i.RLock()
|
|
defer i.RUnlock()
|
|
path, found := i.inode2path[inode]
|
|
if !found {
|
|
glog.Fatal("not found inode %d", inode)
|
|
}
|
|
return path
|
|
}
|
|
|
|
func (i *InodeToPath) HasPath(path util.FullPath) bool {
|
|
if path == "/" {
|
|
return true
|
|
}
|
|
i.RLock()
|
|
defer i.RUnlock()
|
|
_, found := i.path2inode[path]
|
|
return found
|
|
}
|
|
|
|
func (i *InodeToPath) HasInode(inode uint64) bool {
|
|
if inode == 1 {
|
|
return true
|
|
}
|
|
i.RLock()
|
|
defer i.RUnlock()
|
|
_, found := i.inode2path[inode]
|
|
return found
|
|
}
|
|
|
|
func (i *InodeToPath) RemovePath(path util.FullPath) {
|
|
if path == "/" {
|
|
return
|
|
}
|
|
i.Lock()
|
|
defer i.Unlock()
|
|
inode, found := i.path2inode[path]
|
|
if found {
|
|
delete(i.path2inode, path)
|
|
delete(i.inode2path, inode)
|
|
}
|
|
}
|
|
func (i *InodeToPath) RemoveInode(inode uint64) {
|
|
if inode == 1 {
|
|
return
|
|
}
|
|
i.RLock()
|
|
defer i.RUnlock()
|
|
path, found := i.inode2path[inode]
|
|
if found {
|
|
delete(i.path2inode, path)
|
|
delete(i.inode2path, inode)
|
|
}
|
|
}
|