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46 lines
718 B
46 lines
718 B
// +build solaris |
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package flock |
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import ( |
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"os" |
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"syscall" |
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) |
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type unixLock struct { |
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f *os.File |
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} |
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func (l *unixLock) Release() error { |
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if err := l.set(false); err != nil { |
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return err |
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} |
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return l.f.Close() |
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} |
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func (l *unixLock) set(lock bool) error { |
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flock := syscall.Flock_t{ |
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Type: syscall.F_UNLCK, |
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Start: 0, |
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Len: 0, |
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Whence: 1, |
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} |
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if lock { |
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flock.Type = syscall.F_WRLCK |
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} |
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return syscall.FcntlFlock(l.f.Fd(), syscall.F_SETLK, &flock) |
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} |
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func newLock(fileName string) (Releaser, error) { |
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f, err := os.OpenFile(fileName, os.O_RDWR|os.O_CREATE, 0644) |
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if err != nil { |
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return nil, err |
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} |
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l := &unixLock{f} |
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err = l.set(true) |
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if err != nil { |
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f.Close() |
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return nil, err |
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} |
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return l, nil |
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}
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