forked from keybase/kbfs
/
unstage_file.go
47 lines (39 loc) · 1.24 KB
/
unstage_file.go
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// Copyright 2016 Keybase Inc. All rights reserved.
// Use of this source code is governed by a BSD
// license that can be found in the LICENSE file.
package libfuse
import (
"bazil.org/fuse"
"bazil.org/fuse/fs"
"github.com/keybase/kbfs/libfs"
"github.com/keybase/kbfs/libkbfs"
"golang.org/x/net/context"
)
// UnstageFile represents a write-only file when any write of at least
// one byte triggers unstaging all unmerged commits and
// fast-forwarding to the current master.
type UnstageFile struct {
folder *Folder
}
var _ fs.Node = (*UnstageFile)(nil)
// Attr implements the fs.Node interface for UnstageFile.
func (f *UnstageFile) Attr(ctx context.Context, a *fuse.Attr) error {
a.Size = 0
a.Mode = 0222
return nil
}
var _ fs.Handle = (*UnstageFile)(nil)
var _ fs.HandleWriter = (*UnstageFile)(nil)
// Write implements the fs.HandleWriter interface for UnstageFile.
func (f *UnstageFile) Write(ctx context.Context, req *fuse.WriteRequest,
resp *fuse.WriteResponse) (err error) {
defer func() { err = f.folder.processError(ctx, libkbfs.WriteMode, err) }()
size, err := libfs.UnstageForTesting(
ctx, f.folder.fs.log, f.folder.fs.config,
f.folder.getFolderBranch(), req.Data)
if err != nil {
return err
}
resp.Size = size
return nil
}