| 42 | ) |
| 43 | |
| 44 | func prepareMasterSocketDir(dir string) error { |
| 45 | if err := os.MkdirAll(dir, masterSocketDirPerm); err != nil { |
| 46 | return fmt.Errorf("create master socket dir %s failed: %w", dir, err) |
| 47 | } |
| 48 | if err := os.Chmod(dir, masterSocketDirPerm); err != nil { |
| 49 | return fmt.Errorf("chmod master socket dir %s failed: %w", dir, err) |
| 50 | } |
| 51 | info, err := os.Stat(dir) |
| 52 | if err != nil { |
| 53 | return fmt.Errorf("stat master socket dir %s failed: %w", dir, err) |
| 54 | } |
| 55 | if info.Mode().Perm()&masterSocketDirPermMask != 0 { |
| 56 | return fmt.Errorf("master socket dir %s permission %#o is too permissive", dir, info.Mode().Perm()) |
| 57 | } |
| 58 | if stat, ok := info.Sys().(*syscall.Stat_t); ok { |
| 59 | if int(stat.Uid) != os.Geteuid() { |
| 60 | return fmt.Errorf( |
| 61 | "master socket dir %s owner uid %d does not match current process uid %d", |
| 62 | dir, stat.Uid, os.Geteuid(), |
| 63 | ) |
| 64 | } |
| 65 | } |
| 66 | return nil |
| 67 | } |
| 68 | |
| 69 | func secureMasterSocket(sockPath string) error { |
| 70 | if err := os.Chmod(sockPath, masterSocketFilePerm); err != nil { |