alex/vfs
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Improved support for get/setattr

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This commit is contained in:
Alex Yatskov 2015-05-26 16:28:12 +09:00
parent 6343fa4d89
commit 9c56cd3ecb
3 changed files with 76 additions and 15 deletions
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7
dir.go
View File

@ -91,19 +91,16 @@ func (this *versionedDir) Attr(attr *fuse.Attr) {
}
func (this *versionedDir) Getattr(ctx context.Context, req *fuse.GetattrRequest, resp *fuse.GetattrResponse) error {
info, err := os.Stat(this.node.rebasedPath())
if err != nil {
if err := this.node.updateInfo(); err != nil {
return err
}
this.node.info = info
this.Attr(&resp.Attr)
return nil
}
func (this *versionedDir) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) error {
this.Attr(&resp.Attr)
return nil
return this.node.setAttr(req, resp)
}
func (this *versionedDir) Create(ctx context.Context, req *fuse.CreateRequest, resp *fuse.CreateResponse) (fs.Node, fs.Handle, error) {

7
file.go
View File

@ -64,19 +64,16 @@ func (this *versionedFile) Attr(attr *fuse.Attr) {
}
func (this *versionedFile) Getattr(ctx context.Context, req *fuse.GetattrRequest, resp *fuse.GetattrResponse) error {
info, err := os.Stat(this.node.rebasedPath())
if err != nil {
if err := this.node.updateInfo(); err != nil {
return err
}
this.node.info = info
this.Attr(&resp.Attr)
return nil
}
func (this *versionedFile) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) error {
this.Attr(&resp.Attr)
return nil
return this.node.setAttr(req, resp)
}
func (this *versionedFile) Read(ctx context.Context, req *fuse.ReadRequest, resp *fuse.ReadResponse) error {

77
node.go
View File

@ -52,22 +52,89 @@ func newVersionedNodeStat(path string, ver *version, info os.FileInfo) *versione
return &versionedNode{path, info, ver, nil}
}
func (this *versionedNode) setAttr(req *fuse.SetattrRequest, resp *fuse.SetattrResponse) error {
if req.Valid&fuse.SetattrMode != 0 {
if err := os.Chmod(this.rebasedPath(), req.Mode); err != nil {
return err
}
}
if setGid, setUid := req.Valid&fuse.SetattrGid != 0, req.Valid&fuse.SetattrUid != 0; setGid || setUid {
gid, uid := this.owner()
if setGid {
gid = req.Gid
}
if setUid {
uid = req.Uid
}
if err := os.Chown(this.rebasedPath(), int(uid), int(gid)); err != nil {
return err
}
}
if setAtime, setMtime := req.Valid&fuse.SetattrAtime != 0, req.Valid&fuse.SetattrMtime != 0; setAtime || setMtime {
atime, mtime, _ := this.times()
if setAtime {
atime = req.Atime
}
if setMtime {
mtime = req.Mtime
}
if err := os.Chtimes(this.rebasedPath(), atime, mtime); err != nil {
return err
}
}
if err := this.updateInfo(); err != nil {
return err
}
this.attr(&resp.Attr)
return nil
}
func (this *versionedNode) updateInfo() error {
info, err := os.Stat(this.rebasedPath())
if err != nil {
return err
}
this.info = info
return nil
}
func (this *versionedNode) rebasedPath() string {
return this.ver.rebasePath(this.path)
}
func (this *versionedNode) owner() (gid, uid uint32) {
stat := this.info.Sys().(*syscall.Stat_t)
gid = stat.Gid
uid = stat.Uid
return
}
func (this *versionedNode) times() (atime, mtime, ctime time.Time) {
stat := this.info.Sys().(*syscall.Stat_t)
atime = time.Unix(int64(stat.Atim.Sec), int64(stat.Atim.Nsec))
mtime = this.info.ModTime()
ctime = time.Unix(int64(stat.Ctim.Sec), int64(stat.Ctim.Nsec))
return
}
func (this *versionedNode) attr(attr *fuse.Attr) {
stat := this.info.Sys().(*syscall.Stat_t)
attr.Size = uint64(this.info.Size())
attr.Blocks = uint64(stat.Blocks)
attr.Atime = time.Unix(int64(stat.Atim.Sec), int64(stat.Atim.Nsec))
attr.Mtime = this.info.ModTime()
attr.Ctime = time.Unix(int64(stat.Ctim.Sec), int64(stat.Ctim.Nsec))
attr.Atime, attr.Mtime, attr.Ctime = this.times()
attr.Mode = this.info.Mode()
attr.Nlink = uint32(stat.Nlink)
attr.Uid = stat.Uid
attr.Gid = stat.Gid
attr.Uid, attr.Gid = this.owner()
attr.Rdev = uint32(stat.Rdev)
}