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restic/internal/fs/file_unix.go
2024-08-31 18:40:36 +02:00

51 lines
1.1 KiB
Go

//go:build !windows
// +build !windows
package fs
import (
"os"
"syscall"
)
// fixpath returns an absolute path on windows, so restic can open long file
// names.
func fixpath(name string) string {
return name
}
// TempFile creates a temporary file which has already been deleted (on
// supported platforms)
func TempFile(dir, prefix string) (f *os.File, err error) {
f, err = os.CreateTemp(dir, prefix)
if err != nil {
return nil, err
}
if err = os.Remove(f.Name()); err != nil {
return nil, err
}
return f, nil
}
// isNotSupported returns true if the error is caused by an unsupported file system feature.
func isNotSupported(err error) bool {
if perr, ok := err.(*os.PathError); ok && perr.Err == syscall.ENOTSUP {
return true
}
return false
}
// chmod changes the mode of the named file to mode.
func chmod(name string, mode os.FileMode) error {
err := os.Chmod(fixpath(name), mode)
// ignore the error if the FS does not support setting this mode (e.g. CIFS with gvfs on Linux)
if err != nil && isNotSupported(err) {
return nil
}
return err
}