agetty: support the special terminal on first serial line on a S/390

which is due legacy reasons a block terminal of type 3270 or higher.
Whereas the second serial line on a S/390(x) is a real character
terminal which is compatible with VT220.

Signed-off-by: Werner Fink <werner@suse.de>

diff --git a/term-utils/agetty.c b/term-utils/agetty.c
index b162e9f75aa847bb46580ae6de533090cf93aa93..baa1b38cb88a617c82065a64ef1033845a86346d 100644 (file)
--- a/term-utils/agetty.c
+++ b/term-utils/agetty.c
@@ -49,6 +49,10 @@
 #  ifndef DEFAULT_VCTERM
 #    define DEFAULT_VCTERM "linux"
 #  endif
+#  if defined (__s390__) || defined (__s390x__)
+#    define DEFAULT_TTYS0  "ibm327x"
+#    define DEFAULT_TTYS1  "vt220"
+#  endif
 #  ifndef DEFAULT_STERM
 #    define DEFAULT_STERM  "vt102"
 #  endif
@@ -1051,6 +1055,20 @@ static void open_tty(char *tty, struct termios *tp, struct options *op)
        if (tcgetattr(STDIN_FILENO, tp) < 0)
                log_err(_("%s: failed to get terminal attributes: %m"), tty);
 
+#if defined (__s390__) || defined (__s390x__)
+       if (!op->term) {
+               /*
+                * Special terminal on first serial line on a S/390(x) which
+                * is due legacy reasons a block terminal of type 3270 or
+                * higher.  Whereas the second serial line on a S/390(x) is
+                * a real character terminal which is compatible with VT220.
+                */
+               if (strcmp(op->tty, "ttyS0") == 0)
+                       op->term = DEFAULT_TTYS0;
+               else if (strcmp(op->tty, "ttyS1") == 0)
+                       op->term = DEFAULT_TTYS1;
+       }
+#endif
        /*
         * Detect if this is a virtual console or serial/modem line.
         * In case of a virtual console the ioctl TIOCMGET fails and