func (f *File) Attr(c context.Context, a *fuse.Attr) error {
defer log.Debugln("file_attr:", f.dir.path, f.name, a)
f.mu.Lock()
defer f.mu.Unlock()
return f.dir.fs.backend.View(c, func(ctx Context) error {
b, err := ctx.Dir(f.dir.path)
if err != nil {
return err
}
meta, err := b.Meta(f.name)
if err != nil {
return err
}
a.Uid = meta.Uid
a.Gid = meta.Gid
a.Mode = meta.Perm
a.Nlink = f.links
if f.link {
a.Mode = a.Mode | os.ModeSymlink
}
a.Size = uint64(len(f.data))
if f.writers == 0 {
// not in memory, fetch correct size.
// Attr can't fail, so ignore errors
_ = f.load(c, func(buff []byte) { a.Size = uint64(len(buff)) })
}
return nil
})
}
// Attr sets the fuse attribute for the file
func (f *File) Attr(ctx context.Context, attr *fuse.Attr) (err error) {
// Set attributes from resource metadata
attr.Mode = f.resource.Mode()
attr.Uid = f.uid
attr.Gid = f.gid
if rf, ok := f.resource.(continuity.RegularFile); ok {
attr.Nlink = uint32(len(rf.Paths()))
attr.Size = uint64(rf.Size())
} else {
attr.Nlink = 1
}
attr.Inode = f.inode
return nil
}
// Attr implements the Node interface. It is called when fetching the inode attribute for
// this directory (e.g., to service stat(2)).
func (dir *consulDir) Attr(ctx context.Context, attr *fuse.Attr) error {
attr.Mode = dir.mode()
// Nlink should technically include all the files in the directory, but VFS seems fine
// with the constant "2".
attr.Nlink = 2
attr.Uid = dir.ConsulFS.UID
attr.Gid = dir.ConsulFS.GID
return nil
}
func nodeAttr(ctx context.Context, n Node, attr *fuse.Attr) error {
attr.Valid = attrValidTime
attr.Nlink = 1
attr.Atime = startTime
attr.Mtime = startTime
attr.Ctime = startTime
attr.Crtime = startTime
if err := n.Attr(ctx, attr); err != nil {
return err
}
return nil
}
// lockedAttr fills in an Attr struct for this file. Call when the file's mutex is locked.
func (file *consulFile) lockedAttr(attr *fuse.Attr) {
attr.Mode = file.ConsulFS.mode()
if !file.Deleted {
attr.Nlink = 1
}
// Timestamps aren't reflected in Consul, but it doesn't hurt to fake them
attr.Ctime = file.Ctime
attr.Mtime = file.Mtime
attr.Atime = file.Atime
attr.Uid = file.ConsulFS.UID
attr.Gid = file.ConsulFS.GID
if file.IsOpen {
// Some applications like seeking...
attr.Size = file.Size
}
}
func (t *Node) Attr(ctx context.Context, a *fuse.Attr) error {
fi, err := os.Stat(t.getTargetPath(""))
if err != nil {
return err
}
st := fi.Sys().(*syscall.Stat_t)
a.Nlink = uint32(st.Nlink)
a.Size = uint64(st.Size)
a.Gid = st.Gid
a.Uid = st.Uid
a.Ctime = time.Unix(st.Ctimespec.Unix())
a.Blocks = uint64(st.Blocks)
a.BlockSize = uint32(st.Blksize)
a.Inode = st.Ino
a.Mode = fi.Mode()
logex.Struct(a)
return nil
}
func (n FileNode) Attr(ctx context.Context, a *bfuse.Attr) error {
attr, err := n.fs.Attr(n.id)
if err != nil {
panic("fs.Attr failed for FileNode")
}
a.Valid = 1 * time.Minute
a.Nlink = 1
a.Inode = uint64(n.id)
a.Mode = os.FileMode(attr.PermMode) & os.ModePerm
a.Atime = attr.ModifiedT
a.Mtime = attr.ModifiedT
a.Ctime = attr.ModifiedT
a.Crtime = attr.ModifiedT
a.Size = uint64(attr.Size)
a.Uid = attr.Uid
a.Gid = attr.Gid
return nil
}
func GoFileInfoToFuseAttr(fi os.FileInfo) fuse.Attr {
a := fuse.Attr{
// Valid: cachable,
Size: uint64(fi.Size()),
Mode: fi.Mode(),
Mtime: fi.ModTime(),
}
switch sp := fi.Sys().(type) {
case *sys.Stat_t:
AssertEq(StatModeToGoMode(uint64(sp.Mode)), a.Mode)
// System specific attributes
SetSysAttributes(sp, &a)
a.Blocks = uint64(sp.Blocks)
a.Gid = sp.Gid
a.Inode = uint64(sp.Ino)
a.Nlink = uint32(sp.Nlink)
a.Rdev = uint32(sp.Rdev)
a.Uid = sp.Uid
}
return a
}
