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39 lines
666 B
Go
39 lines
666 B
Go
//go:build !plan9 && !windows && !js
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// +build !plan9,!windows,!js
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package osfs
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import (
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"os"
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"syscall"
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"golang.org/x/sys/unix"
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)
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func (f *file) Lock() error {
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f.m.Lock()
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defer f.m.Unlock()
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return unix.Flock(int(f.File.Fd()), unix.LOCK_EX)
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}
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func (f *file) Unlock() error {
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f.m.Lock()
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defer f.m.Unlock()
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return unix.Flock(int(f.File.Fd()), unix.LOCK_UN)
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}
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func rename(from, to string) error {
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return os.Rename(from, to)
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}
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// umask sets umask to a new value, and returns a func which allows the
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// caller to reset it back to what it was originally.
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func umask(new int) func() {
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old := syscall.Umask(new)
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return func() {
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syscall.Umask(old)
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}
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}
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