| /* Copyright (C) 2016-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public License as |
| published by the Free Software Foundation; either version 2.1 of the |
| License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; see the file COPYING.LIB. If |
| not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include <unistd.h> |
| #include <stdbool.h> |
| #include <sys/sysmacros.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| |
| /* Return true if this is a UNIX98 pty device, as defined in |
| linux/Documentation/devices.txt (on linux < 4.10) or |
| linux/Documentation/admin-guide/devices.txt (on linux >= 4.10). */ |
| static inline bool |
| is_pty (struct stat64 *sb) |
| { |
| #ifdef _STATBUF_ST_RDEV |
| int m = __gnu_dev_major (sb->st_rdev); |
| return (136 <= m && m <= 143); |
| #else |
| return false; |
| #endif |
| } |
| |
| static inline bool |
| is_mytty (const struct stat64 *mytty, const struct stat64 *maybe) |
| { |
| return (maybe->st_ino == mytty->st_ino |
| && maybe->st_dev == mytty->st_dev |
| #ifdef _STATBUF_ST_RDEV |
| && S_ISCHR (maybe->st_mode) |
| && maybe->st_rdev == mytty->st_rdev |
| #endif |
| ); |
| } |
