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9af83321ec
Plan 9 doesn't have mmap, so we just return an error.
File locking is implemented using the exclusive mode bit.
From http://man.cat-v.org/plan_9/5/open:
If the file is marked for exclusive use (see stat(5)), only
one client can have the file open at any time. That is,
after such a file has been opened, further opens will fail
until fid has been clunked.
Initial attempt at implementing directory locking using this method was
not successful because badger seems to be opening the directory multiple
times (at least while running the test suite). As a workaround, we lock
the pid lock file instead of the directory itself, same as the windows
implementation.
Co-authored-by: Ibrahim Jarif <[email protected]>
(cherry picked from commit 7b076d6874)
Co-authored-by: Fazlul Shahriar <[email protected]>
26 lines
758 B
Go
26 lines
758 B
Go
// +build !dragonfly,!freebsd,!windows,!plan9
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/*
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* Copyright 2017 Dgraph Labs, Inc. and Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package y
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import "golang.org/x/sys/unix"
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func init() {
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datasyncFileFlag = unix.O_DSYNC
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}
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