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7b076d6874
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]>
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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