save and restore window size settings

[ppp.git] / pppd / sys-svr4.c

diff --git a/pppd/sys-svr4.c b/pppd/sys-svr4.c
index 20545a7fb79a575b5cba05d2ebdd7275ad3a0d0a..df74afe7b823bb1dfd2b63868fec4e47098ae2b5 100644 (file)
--- a/pppd/sys-svr4.c
+++ b/pppd/sys-svr4.c
@@ -26,7 +26,7 @@
  */
 
 #ifndef lint
-static char rcsid[] = "$Id: sys-svr4.c,v 1.3 1995/06/23 01:54:11 paulus Exp $";
+static char rcsid[] = "$Id: sys-svr4.c,v 1.5 1995/08/11 02:36:24 paulus Exp $";
 #endif
 
 #include <stdio.h>
@@ -37,6 +37,7 @@ static char rcsid[] = "$Id: sys-svr4.c,v 1.3 1995/06/23 01:54:11 paulus Exp $";
 #include <fcntl.h>
 #include <unistd.h>
 #include <termios.h>
+#include <signal.h>
 #include <sys/types.h>
 #include <sys/ioccom.h>
 #include <sys/stream.h>
@@ -63,6 +64,8 @@ static int    ipmuxid = -1;
 
 static int     restore_term;
 static struct termios inittermios;
+static struct winsize wsinfo;  /* Initial window size info */
+static pid_t   tty_sid;        /* original session ID for terminal */
 
 static int     link_mtu, link_mru;
 
@@ -145,6 +148,9 @@ establish_ppp()
 {
     int i, ifd;
 
+    if (default_device)
+       tty_sid = getsid((pid_t)0);
+
     pppfd = open("/dev/ppp", O_RDWR | O_NONBLOCK, 0);
     if (pppfd < 0) {
        syslog(LOG_ERR, "Can't open /dev/ppp: %m");
@@ -227,6 +233,16 @@ disestablish_ppp()
                    syslog(LOG_ERR, "Couldn't restore tty module %s: %m",
                           tty_modules[i]);
        }
+       if (hungup && default_device && tty_sid > 0) {
+           /*
+            * If we have received a hangup, we need to send a SIGHUP
+            * to the terminal's controlling process.  The reason is
+            * that the original stream head for the terminal hasn't
+            * seen the M_HANGUP message (it went up through the ppp
+            * driver to the stream head for our fd to /dev/ppp).
+            */
+           kill(tty_sid, SIGHUP);
+       }
     }
 }
 
@@ -356,8 +372,10 @@ set_up_tty(fd, local)
        die(1);
     }
 
-    if (!restore_term)
+    if (!restore_term) {
        inittermios = tios;
+       ioctl(fd, TIOCGWINSZ, &wsinfo);
+    }
 
     tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
     if (crtscts > 0)
@@ -425,6 +443,7 @@ restore_tty()
        if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
            if (!hungup && errno != ENXIO)
                syslog(LOG_WARNING, "tcsetattr: %m");
+       ioctl(fd, TIOCSWINSZ, &wsinfo);
        restore_term = 0;
     }
 }
@@ -1162,7 +1181,7 @@ gethostid()
        syslog(LOG_ERR, "sysinfo: %m");
        return 0;
     }
-    return strtol(buf, NULL, 16);
+    return (int) strtoul(buf, NULL, 16);
 }
 
 int