mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-01-19 02:48:24 +00:00
253 lines
6.3 KiB
Go
253 lines
6.3 KiB
Go
package mount
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import (
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"github.com/hanwen/go-fuse/v2/fuse"
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"github.com/seaweedfs/seaweedfs/weed/filer"
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"github.com/seaweedfs/seaweedfs/weed/glog"
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"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
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"os"
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"syscall"
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"time"
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)
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func (wfs *WFS) GetAttr(cancel <-chan struct{}, input *fuse.GetAttrIn, out *fuse.AttrOut) (code fuse.Status) {
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if input.NodeId == 1 {
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wfs.setRootAttr(out)
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return fuse.OK
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}
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inode := input.NodeId
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_, _, entry, status := wfs.maybeReadEntry(inode)
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if status == fuse.OK {
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out.AttrValid = 1
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wfs.setAttrByPbEntry(&out.Attr, inode, entry)
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return status
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} else {
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if fh, found := wfs.fhmap.FindFileHandle(inode); found {
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out.AttrValid = 1
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wfs.setAttrByPbEntry(&out.Attr, inode, fh.entry.GetEntry())
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out.Nlink = 0
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return fuse.OK
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}
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}
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return status
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}
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func (wfs *WFS) SetAttr(cancel <-chan struct{}, input *fuse.SetAttrIn, out *fuse.AttrOut) (code fuse.Status) {
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if wfs.IsOverQuota {
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return fuse.Status(syscall.ENOSPC)
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}
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path, fh, entry, status := wfs.maybeReadEntry(input.NodeId)
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if status != fuse.OK {
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return status
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}
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if size, ok := input.GetSize(); ok && entry != nil {
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glog.V(4).Infof("%v setattr set size=%v chunks=%d", path, size, len(entry.GetChunks()))
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if size < filer.FileSize(entry) {
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// fmt.Printf("truncate %v \n", fullPath)
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var chunks []*filer_pb.FileChunk
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var truncatedChunks []*filer_pb.FileChunk
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for _, chunk := range entry.GetChunks() {
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int64Size := int64(chunk.Size)
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if chunk.Offset+int64Size > int64(size) {
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// this chunk is truncated
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int64Size = int64(size) - chunk.Offset
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if int64Size > 0 {
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chunks = append(chunks, chunk)
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glog.V(4).Infof("truncated chunk %+v from %d to %d\n", chunk.GetFileIdString(), chunk.Size, int64Size)
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chunk.Size = uint64(int64Size)
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} else {
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glog.V(4).Infof("truncated whole chunk %+v\n", chunk.GetFileIdString())
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truncatedChunks = append(truncatedChunks, chunk)
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}
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} else {
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chunks = append(chunks, chunk)
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}
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}
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// set the new chunks and reset entry cache
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entry.Chunks = chunks
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if fh != nil {
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fh.entryViewCache = nil
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}
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}
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entry.Attributes.Mtime = time.Now().Unix()
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entry.Attributes.FileSize = size
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}
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if mode, ok := input.GetMode(); ok {
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// glog.V(4).Infof("setAttr mode %o", mode)
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entry.Attributes.FileMode = chmod(entry.Attributes.FileMode, mode)
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if input.NodeId == 1 {
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wfs.option.MountMode = os.FileMode(chmod(uint32(wfs.option.MountMode), mode))
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}
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}
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if uid, ok := input.GetUID(); ok {
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entry.Attributes.Uid = uid
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if input.NodeId == 1 {
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wfs.option.MountUid = uid
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}
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}
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if gid, ok := input.GetGID(); ok {
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entry.Attributes.Gid = gid
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if input.NodeId == 1 {
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wfs.option.MountGid = gid
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}
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}
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if atime, ok := input.GetATime(); ok {
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entry.Attributes.Mtime = atime.Unix()
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}
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if mtime, ok := input.GetMTime(); ok {
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entry.Attributes.Mtime = mtime.Unix()
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}
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out.AttrValid = 1
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wfs.setAttrByPbEntry(&out.Attr, input.NodeId, entry)
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if fh != nil {
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fh.dirtyMetadata = true
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return fuse.OK
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}
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return wfs.saveEntry(path, entry)
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}
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func (wfs *WFS) setRootAttr(out *fuse.AttrOut) {
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now := uint64(time.Now().Unix())
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out.AttrValid = 119
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out.Ino = 1
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setBlksize(&out.Attr, blockSize)
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out.Uid = wfs.option.MountUid
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out.Gid = wfs.option.MountGid
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out.Mtime = now
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out.Ctime = now
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out.Atime = now
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out.Mode = toSyscallType(os.ModeDir) | uint32(wfs.option.MountMode)
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out.Nlink = 1
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}
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func (wfs *WFS) setAttrByPbEntry(out *fuse.Attr, inode uint64, entry *filer_pb.Entry) {
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out.Ino = inode
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if entry.Attributes != nil && entry.Attributes.Inode != 0 {
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out.Ino = entry.Attributes.Inode
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}
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out.Size = filer.FileSize(entry)
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if entry.FileMode()&os.ModeSymlink != 0 {
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out.Size = uint64(len(entry.Attributes.SymlinkTarget))
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}
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out.Blocks = (out.Size + blockSize - 1) / blockSize
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setBlksize(out, blockSize)
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if entry == nil {
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return
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}
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out.Mtime = uint64(entry.Attributes.Mtime)
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out.Ctime = uint64(entry.Attributes.Mtime)
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out.Atime = uint64(entry.Attributes.Mtime)
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out.Mode = toSyscallMode(os.FileMode(entry.Attributes.FileMode))
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if entry.HardLinkCounter > 0 {
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out.Nlink = uint32(entry.HardLinkCounter)
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} else {
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out.Nlink = 1
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}
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out.Uid = entry.Attributes.Uid
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out.Gid = entry.Attributes.Gid
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out.Rdev = entry.Attributes.Rdev
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}
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func (wfs *WFS) setAttrByFilerEntry(out *fuse.Attr, inode uint64, entry *filer.Entry) {
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out.Ino = inode
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out.Size = entry.FileSize
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if entry.Mode&os.ModeSymlink != 0 {
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out.Size = uint64(len(entry.SymlinkTarget))
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}
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out.Blocks = (out.Size + blockSize - 1) / blockSize
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setBlksize(out, blockSize)
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out.Atime = uint64(entry.Attr.Mtime.Unix())
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out.Mtime = uint64(entry.Attr.Mtime.Unix())
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out.Ctime = uint64(entry.Attr.Mtime.Unix())
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out.Mode = toSyscallMode(entry.Attr.Mode)
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if entry.HardLinkCounter > 0 {
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out.Nlink = uint32(entry.HardLinkCounter)
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} else {
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out.Nlink = 1
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}
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out.Uid = entry.Attr.Uid
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out.Gid = entry.Attr.Gid
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out.Rdev = entry.Attr.Rdev
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}
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func (wfs *WFS) outputPbEntry(out *fuse.EntryOut, inode uint64, entry *filer_pb.Entry) {
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out.NodeId = inode
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out.Generation = 1
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out.EntryValid = 1
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out.AttrValid = 1
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wfs.setAttrByPbEntry(&out.Attr, inode, entry)
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}
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func (wfs *WFS) outputFilerEntry(out *fuse.EntryOut, inode uint64, entry *filer.Entry) {
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out.NodeId = inode
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out.Generation = 1
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out.EntryValid = 1
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out.AttrValid = 1
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wfs.setAttrByFilerEntry(&out.Attr, inode, entry)
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}
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func chmod(existing uint32, mode uint32) uint32 {
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return existing&^07777 | mode&07777
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}
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func toSyscallMode(mode os.FileMode) uint32 {
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return toSyscallType(mode) | uint32(mode)
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}
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func toSyscallType(mode os.FileMode) uint32 {
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switch mode & os.ModeType {
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case os.ModeDir:
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return syscall.S_IFDIR
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case os.ModeSymlink:
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return syscall.S_IFLNK
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case os.ModeNamedPipe:
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return syscall.S_IFIFO
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case os.ModeSocket:
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return syscall.S_IFSOCK
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case os.ModeDevice:
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return syscall.S_IFBLK
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case os.ModeCharDevice:
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return syscall.S_IFCHR
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default:
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return syscall.S_IFREG
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}
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}
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func toOsFileType(mode uint32) os.FileMode {
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switch mode & (syscall.S_IFMT & 0xffff) {
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case syscall.S_IFDIR:
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return os.ModeDir
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case syscall.S_IFLNK:
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return os.ModeSymlink
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case syscall.S_IFIFO:
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return os.ModeNamedPipe
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case syscall.S_IFSOCK:
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return os.ModeSocket
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case syscall.S_IFBLK:
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return os.ModeDevice
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case syscall.S_IFCHR:
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return os.ModeCharDevice
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default:
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return 0
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}
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}
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func toOsFileMode(mode uint32) os.FileMode {
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return toOsFileType(mode) | os.FileMode(mode&07777)
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}
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