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lockedfile.go
55 lines (46 loc) · 1 KB
/
lockedfile.go
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package action
import (
"os"
"path/filepath"
"github.com/launchrctl/launchr/internal/launchr"
)
// @todo refactor to use one implementation here and in keyring.
type lockedFile struct {
fname string
file *os.File
locked bool
}
func (f *lockedFile) Open(flag int, perm os.FileMode) (err error) {
isCreate := flag&os.O_CREATE == os.O_CREATE
if isCreate {
err = launchr.EnsurePath(filepath.Dir(f.fname))
if err != nil {
return err
}
}
f.file, err = os.OpenFile(f.fname, flag, perm) //nolint:gosec
if err != nil {
return err
}
err = f.lock(true)
if err != nil {
return err
}
return nil
}
func (f *lockedFile) Read(p []byte) (n int, err error) { return f.file.Read(p) }
func (f *lockedFile) Write(p []byte) (n int, err error) { return f.file.Write(p) }
func (f *lockedFile) Close() error {
f.unlock()
if f.file != nil {
return f.file.Close()
}
return nil
}
func (f *lockedFile) Remove() (err error) {
err = os.Remove(f.fname)
if os.IsNotExist(err) {
return nil
}
return err
}