vserver 1.9.3

[linux-2.6.git] / include / linux / tty.h

diff --git a/include/linux/tty.h b/include/linux/tty.h
index 7481d70..f9fd149 100644 (file)
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -244,6 +244,7 @@ struct tty_struct {
        struct tty_driver *driver;
        int index;
        struct tty_ldisc ldisc;
+       struct semaphore termios_sem;
        struct termios *termios, *termios_locked;
        char name[64];
        int pgrp;
@@ -306,26 +307,27 @@ struct tty_struct {
  * tty->write.  Thus, you must use the inline functions set_bit() and
  * clear_bit() to make things atomic.
  */
-#define TTY_THROTTLED 0
-#define TTY_IO_ERROR 1
-#define TTY_OTHER_CLOSED 2
-#define TTY_EXCLUSIVE 3
-#define TTY_DEBUG 4
-#define TTY_DO_WRITE_WAKEUP 5
-#define TTY_PUSH 6
-#define TTY_CLOSING 7
-#define TTY_DONT_FLIP 8
-#define TTY_HW_COOK_OUT 14
-#define TTY_HW_COOK_IN 15
-#define TTY_PTY_LOCK 16
-#define TTY_NO_WRITE_SPLIT 17
+#define TTY_THROTTLED          0       /* Call unthrottle() at threshold min */
+#define TTY_IO_ERROR           1       /* Canse an I/O error (may be no ldisc too) */
+#define TTY_OTHER_CLOSED       2       /* Other side (if any) has closed */
+#define TTY_EXCLUSIVE          3       /* Exclusive open mode */
+#define TTY_DEBUG              4       /* Debugging */
+#define TTY_DO_WRITE_WAKEUP    5       /* Call write_wakeup after queuing new */
+#define TTY_PUSH               6       /* n_tty private */
+#define TTY_CLOSING            7       /* ->close() in progress */
+#define TTY_DONT_FLIP          8       /* Defer buffer flip */
+#define TTY_LDISC              9       /* Line discipline attached */
+#define TTY_HW_COOK_OUT        14      /* Hardware can do output cooking */
+#define TTY_HW_COOK_IN                 15      /* Hardware can do input cooking */
+#define TTY_PTY_LOCK           16      /* pty private */
+#define TTY_NO_WRITE_SPLIT     17      /* Preserve write boundaries to driver */
+#define TTY_HUPPED             18      /* Post driver->hangup() */
 
 #define TTY_WRITE_FLUSH(tty) tty_write_flush((tty))
 
 extern void tty_write_flush(struct tty_struct *);
 
 extern struct termios tty_std_termios;
-extern struct tty_ldisc ldiscs[];
 extern int fg_console, last_console, want_console;
 
 extern int kmsg_redirect;
@@ -362,6 +364,16 @@ extern void tty_flip_buffer_push(struct tty_struct *tty);
 extern int tty_get_baud_rate(struct tty_struct *tty);
 extern int tty_termios_baud_rate(struct termios *termios);
 
+extern struct tty_ldisc *tty_ldisc_ref(struct tty_struct *);
+extern void tty_ldisc_deref(struct tty_ldisc *);
+extern struct tty_ldisc *tty_ldisc_ref_wait(struct tty_struct *);
+
+extern struct tty_ldisc *tty_ldisc_get(int);
+extern void tty_ldisc_put(int);
+
+extern void tty_wakeup(struct tty_struct *tty);
+extern void tty_ldisc_flush(struct tty_struct *tty);
+
 struct semaphore;
 extern struct semaphore tty_sem;