1 /* Copyright (C) 1998 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If not,
16 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA. */
21 #include <sys/statfs.h>
23 /* Constant that identifies the `devpts' filesystem. */
24 #define DEVPTS_SUPER_MAGIC 0x1cd1
26 /* Prototype for function that changes ownership and access permission
27 for slave pseudo terminals that do not live on a `devpts'
29 int __unix_grantpt (int fd
);
31 /* Prototype for private function that gets the name of the slave
32 pseudo terminal in a safe way. */
33 static int pts_name (int fd
, char **pts
, size_t buf_len
);
35 /* Change the ownership and access permission of the slave pseudo
36 terminal associated with the master pseudo terminal specified
49 if (pts_name (fd
, &buf
, sizeof (_buf
)))
52 if (__statfs (buf
, &fsbuf
) < 0)
55 /* If the slave pseudo terminal lives on a `devpts' filesystem, the
56 ownership and access permission are already set. */
57 if (fsbuf
.f_type
== DEVPTS_SUPER_MAGIC
)
60 return __unix_grantpt (fd
);
63 #define grantpt __unix_grantpt
64 #include <sysdeps/unix/grantpt.c>