}
if fi, err := fs.root.Stat(path); err != nil {
return fs.errCode(err)
- } else if mode & ^uint32(fuse.S_IFREG|fuse.S_IFDIR|0777) != 0 || (fi.Mode()&os.ModeDir != 0) != (mode&fuse.S_IFDIR != 0) {
+ } else if mode & ^uint32(fuse.S_IFREG|fuse.S_IFDIR|0777) != 0 {
+ // Refuse to set mode bits other than
+ // regfile/dir/perms
+ return -fuse.ENOSYS
+ } else if (fi.Mode()&os.ModeDir != 0) != (mode&fuse.S_IFDIR != 0) {
+ // Refuse to transform a regular file to a dir, or
+ // vice versa
return -fuse.ENOSYS
- } else {
- return 0
}
+ // As long as the change isn't nonsense, chmod is a no-op,
+ // because we don't save permission bits.
+ return 0
}
func (fs *keepFS) fillStat(stat *fuse.Stat_t, fi os.FileInfo) {