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mount: support truncate properly

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This commit is contained in:
Nick Craig-Wood 2017-11-20 19:42:35 +00:00
parent 3fb4fe31d2
commit dc1c679c65
1 changed files with 10 additions and 7 deletions
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13
cmd/mount/file.go
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@ -42,17 +42,20 @@ func (f *File) Attr(ctx context.Context, a *fuse.Attr) (err error) {
// Check interface satisfied // Check interface satisfied
var _ fusefs.NodeSetattrer = (*File)(nil) var _ fusefs.NodeSetattrer = (*File)(nil)
// Setattr handles attribute changes from FUSE. Currently supports ModTime only. // Setattr handles attribute changes from FUSE. Currently supports ModTime and Size only
func (f *File) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) (err error) { func (f *File) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) (err error) {
defer fs.Trace(f, "a=%+v", req)("err=%v", &err) defer fs.Trace(f, "a=%+v", req)("err=%v", &err)
if f.VFS().Opt.NoModTime { if !f.VFS().Opt.NoModTime {
return nil
}
if req.Valid.MtimeNow() { if req.Valid.MtimeNow() {
err = f.File.SetModTime(time.Now()) err = f.File.SetModTime(time.Now())
} else if req.Valid.Mtime() { }
if req.Valid.Mtime() {
err = f.File.SetModTime(req.Mtime) err = f.File.SetModTime(req.Mtime)
} }
}
if req.Valid.Size() {
err = f.File.Truncate(int64(req.Size))
}
return translateError(err) return translateError(err)
} }