aboutsummaryrefslogtreecommitdiff
path: root/login/openpty.c
diff options
context:
space:
mode:
Diffstat (limited to 'login/openpty.c')
-rw-r--r--login/openpty.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/login/openpty.c b/login/openpty.c
new file mode 100644
index 0000000000..12e82072bc
--- /dev/null
+++ b/login/openpty.c
@@ -0,0 +1,73 @@
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1998.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <fcntl.h>
+#include <pty.h>
+#include <stdlib.h>
+#include <string.h>
+#include <termios.h>
+#include <unistd.h>
+#include <sys/types.h>
+
+#include "pty-internal.h"
+
+int
+openpty (pmast, pslave, pname, tio, wins)
+ int *pmast;
+ int *pslave;
+ char *pname;
+ struct termios *tio;
+ struct winsize *wins;
+{
+ int pfd, tfd;
+ char name[PTYNAMELEN];
+
+ pfd = getpt ();
+ if (pfd == -1)
+ return -1;
+
+ if (grantpt (pfd))
+ goto bail;
+
+ if (unlockpt (pfd))
+ goto bail;
+
+ if (!ptsname_r (pfd, name, PTYNAMELEN))
+ goto bail;
+
+ tfd = open (name, O_RDWR);
+ if (tfd == -1)
+ goto bail;
+
+ /* XXX Should we ignore errors here? */
+ if(tio)
+ tcsetattr (tfd, TCSAFLUSH, tio);
+ if (wins)
+ ioctl (tfd, TIOCSWINSZ, wins);
+
+ *pmast = pfd;
+ *pslave = tfd;
+ if (pname != NULL)
+ strcpy (pname, name);
+ return 0;
+
+bail:
+ close (pfd);
+ return -1;
+}