21f4cf7ab5
- Use filepaths with /tmp for tests instead - Only mock functions where filepath can't be specified such as user.Lookup
49 lines
1.0 KiB
Go
49 lines
1.0 KiB
Go
package openvpn
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import (
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"fmt"
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"os"
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"path/filepath"
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"github.com/qdm12/gluetun/internal/unix"
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)
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// CheckTUN checks the tunnel device is present and accessible.
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func (c *configurator) CheckTUN() error {
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c.logger.Info("checking for device " + c.tunDevPath)
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f, err := os.OpenFile(c.tunDevPath, os.O_RDWR, 0)
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if err != nil {
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return fmt.Errorf("TUN device is not available: %w", err)
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}
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if err := f.Close(); err != nil {
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c.logger.Warn("Could not close TUN device file: %s", err)
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}
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return nil
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}
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func (c *configurator) CreateTUN() error {
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c.logger.Info("creating " + c.tunDevPath)
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parentDir := filepath.Dir(c.tunDevPath)
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if err := os.MkdirAll(parentDir, 0751); err != nil { //nolint:gomnd
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return err
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}
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const (
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major = 10
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minor = 200
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)
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dev := c.unix.Mkdev(major, minor)
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if err := c.unix.Mknod(c.tunDevPath, unix.S_IFCHR, int(dev)); err != nil {
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return err
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}
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const readWriteAllPerms os.FileMode = 0666
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file, err := os.OpenFile(c.tunDevPath, os.O_WRONLY, readWriteAllPerms)
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if err != nil {
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return err
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}
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return file.Close()
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}
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