func (n *pathInode) GetAttr(out *fuse.Attr, file nodefs.File, context *fuse.Context) (code fuse.Status) {
var fi *fuse.Attr
if file == nil {
// called on a deleted files.
file = n.Inode().AnyFile()
}
if file != nil {
code = file.GetAttr(out)
}
if file == nil || code == fuse.ENOSYS || code == fuse.EBADF {
fi, code = n.fs.GetAttr(n.GetPath(), context)
}
if fi != nil {
n.setClientInode(fi.Ino)
}
if fi != nil && !fi.IsDir() && fi.Nlink == 0 {
fi.Nlink = 1
}
if fi != nil {
*out = *fi
}
return code
}
func (n *pathInode) Fallocate(file nodefs.File, off uint64, size uint64, mode uint32, context *fuse.Context) (code fuse.Status) {
if file != nil {
code = file.Allocate(off, size, mode)
if code.Ok() {
return code
}
}
files := n.Inode().Files(fuse.O_ANYWRITE)
for _, f := range files {
// TODO - pass context
code = f.Allocate(off, size, mode)
if code.Ok() {
return code
}
}
return code
}
func (fs *unionFS) putDeletion(name string) (code fuse.Status) {
code = fs.createDeletionStore()
if !code.Ok() {
return code
}
marker := fs.deletionPath(name)
fs.deletionCache.AddEntry(path.Base(marker))
// Is there a WriteStringToFileOrDie ?
writable := fs.fileSystems[0]
fi, code := writable.GetAttr(marker, nil)
if code.Ok() && fi.Size == uint64(len(name)) {
return fuse.OK
}
var f nodefs.File
if code == fuse.ENOENT {
f, code = writable.Create(marker, uint32(os.O_TRUNC|os.O_WRONLY), 0644, nil)
} else {
writable.Chmod(marker, 0644, nil)
f, code = writable.Open(marker, uint32(os.O_TRUNC|os.O_WRONLY), nil)
}
if !code.Ok() {
log.Printf("could not create deletion file %v: %v", marker, code)
return fuse.EPERM
}
defer f.Release()
defer f.Flush()
n, code := f.Write([]byte(name), 0)
if int(n) != len(name) || !code.Ok() {
panic(fmt.Sprintf("Error for writing %v: %v, %v (exp %v) %v", name, marker, n, len(name), code))
}
return fuse.OK
}
func (n *pathInode) Write(file nodefs.File, data []byte, off int64, context *fuse.Context) (written uint32, code fuse.Status) {
if file != nil {
return file.Write(data, off)
}
return 0, fuse.ENOSYS
}
func (n *pathInode) Read(file nodefs.File, dest []byte, off int64, context *fuse.Context) (fuse.ReadResult, fuse.Status) {
if file != nil {
return file.Read(dest, off)
}
return nil, fuse.ENOSYS
}
func (n *pathInode) Flush(file nodefs.File, openFlags uint32, context *fuse.Context) (code fuse.Status) {
return file.Flush()
}