fedora core 6 1.2949 + vserver 2.2.0

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

diff --git a/include/linux/tty.h b/include/linux/tty.h
index f45cd74..65cbcf2 100644 (file)
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -5,25 +5,14 @@
  * 'tty.h' defines some structures used by tty_io.c and some defines.
  */
 
-/*
- * These constants are also useful for user-level apps (e.g., VC
- * resizing).
- */
-#define MIN_NR_CONSOLES 1       /* must be at least 1 */
-#define MAX_NR_CONSOLES        63      /* serial lines start at 64 */
-#define MAX_NR_USER_CONSOLES 63        /* must be root to allocate above this */
-               /* Note: the ioctl VT_GETSTATE does not work for
-                  consoles 16 and higher (since it returns a short) */
-
 #ifdef __KERNEL__
-#include <linux/config.h>
 #include <linux/fs.h>
 #include <linux/major.h>
 #include <linux/termios.h>
 #include <linux/workqueue.h>
 #include <linux/tty_driver.h>
 #include <linux/tty_ldisc.h>
-#include <linux/screen_info.h>
+#include <linux/mutex.h>
 
 #include <asm/system.h>
 
@@ -57,7 +46,6 @@ struct tty_buffer {
        unsigned char *flag_buf_ptr;
        int used;
        int size;
-       int active;
        int commit;
        int read;
        /* Data points here */
@@ -65,12 +53,13 @@ struct tty_buffer {
 };
 
 struct tty_bufhead {
-       struct work_struct              work;
+       struct delayed_work work;
        struct semaphore pty_sem;
        spinlock_t lock;
        struct tty_buffer *head;        /* Queue head */
        struct tty_buffer *tail;        /* Active buffer */
        struct tty_buffer *free;        /* Free queue head */
+       int memory_used;                /* Buffer space used excluding free queue */
 };
 /*
  * The pty uses char_buf and flag_buf as a contiguous buffer
@@ -185,8 +174,8 @@ struct tty_struct {
        struct tty_driver *driver;
        int index;
        struct tty_ldisc ldisc;
-       struct semaphore termios_sem;
-       struct termios *termios, *termios_locked;
+       struct mutex termios_mutex;
+       struct ktermios *termios, *termios_locked;
        char name[64];
        int pgrp;
        int session;
@@ -201,7 +190,6 @@ struct tty_struct {
        struct tty_struct *link;
        struct fasync_struct *fasync;
        struct tty_bufhead buf;
-       int max_flip_cnt;
        int alt_speed;          /* For magic substitution of 38400 bps */
        wait_queue_head_t write_wait;
        wait_queue_head_t read_wait;
@@ -231,8 +219,8 @@ struct tty_struct {
        int canon_data;
        unsigned long canon_head;
        unsigned int canon_column;
-       struct semaphore atomic_read;
-       struct semaphore atomic_write;
+       struct mutex atomic_read_lock;
+       struct mutex atomic_write_lock;
        unsigned char *write_buf;
        int write_cnt;
        spinlock_t read_lock;
@@ -259,7 +247,6 @@ struct tty_struct {
 #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 */
@@ -271,8 +258,7 @@ struct tty_struct {
 
 extern void tty_write_flush(struct tty_struct *);
 
-extern struct termios tty_std_termios;
-extern int fg_console, last_console, want_console;
+extern struct ktermios tty_std_termios;
 
 extern int kmsg_redirect;
 
@@ -290,7 +276,8 @@ extern int tty_register_ldisc(int disc, struct tty_ldisc *new_ldisc);
 extern int tty_unregister_ldisc(int disc);
 extern int tty_register_driver(struct tty_driver *driver);
 extern int tty_unregister_driver(struct tty_driver *driver);
-extern void tty_register_device(struct tty_driver *driver, unsigned index, struct device *dev);
+extern struct device *tty_register_device(struct tty_driver *driver,
+                                         unsigned index, struct device *dev);
 extern void tty_unregister_device(struct tty_driver *driver, unsigned index);
 extern int tty_read_raw_data(struct tty_struct *tty, unsigned char *bufp,
                             int buflen);
@@ -306,8 +293,9 @@ extern int tty_hung_up_p(struct file * filp);
 extern void do_SAK(struct tty_struct *tty);
 extern void disassociate_ctty(int priv);
 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 speed_t tty_get_baud_rate(struct tty_struct *tty);
+extern speed_t tty_termios_baud_rate(struct ktermios *termios);
+extern speed_t tty_termios_input_baud_rate(struct ktermios *termios);
 
 extern struct tty_ldisc *tty_ldisc_ref(struct tty_struct *);
 extern void tty_ldisc_deref(struct tty_ldisc *);
@@ -319,8 +307,16 @@ 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;
+extern int tty_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
+                    unsigned long arg);
+
+extern dev_t tty_devnum(struct tty_struct *tty);
+extern void proc_clear_tty(struct task_struct *p);
+extern void __proc_set_tty(struct task_struct *tsk, struct tty_struct *tty);
+extern void proc_set_tty(struct task_struct *tsk, struct tty_struct *tty);
+extern struct tty_struct *get_current_tty(void);
+
+extern struct mutex tty_mutex;
 
 /* n_tty.c */
 extern struct tty_ldisc tty_ldisc_N_TTY;
@@ -346,10 +342,5 @@ extern void console_print(const char *);
 extern int vt_ioctl(struct tty_struct *tty, struct file * file,
                    unsigned int cmd, unsigned long arg);
 
-static inline dev_t tty_devnum(struct tty_struct *tty)
-{
-       return MKDEV(tty->driver->major, tty->driver->minor_start) + tty->index;
-}
-
 #endif /* __KERNEL__ */
 #endif