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1 /* Copyright (C) 1998 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1998.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
20 #include <fcntl.h>
21 #include <pty.h>
22 #include <stdlib.h>
23 #include <string.h>
24 #include <termios.h>
25 #include <unistd.h>
26 #include <sys/types.h>
28 #include "pty-internal.h"
30 int
31 openpty (pmast, pslave, pname, tio, wins)
32 int *pmast;
33 int *pslave;
34 char *pname;
35 struct termios *tio;
36 struct winsize *wins;
38 int pfd, tfd;
39 char name[PTYNAMELEN];
41 pfd = getpt ();
42 if (pfd == -1)
43 return -1;
45 if (grantpt (pfd))
46 goto bail;
48 if (unlockpt (pfd))
49 goto bail;
51 if (ptsname_r (pfd, name, PTYNAMELEN) != 0)
52 goto bail;
54 tfd = open (name, O_RDWR);
55 if (tfd == -1)
56 goto bail;
58 /* XXX Should we ignore errors here? */
59 if(tio)
60 tcsetattr (tfd, TCSAFLUSH, tio);
61 if (wins)
62 ioctl (tfd, TIOCSWINSZ, wins);
64 *pmast = pfd;
65 *pslave = tfd;
66 if (pname != NULL)
67 strcpy (pname, name);
68 return 0;
70 bail:
71 close (pfd);
72 return -1;