diff options
Diffstat (limited to 'include/linux/tty.h')
| -rw-r--r-- | include/linux/tty.h | 43 |
1 files changed, 17 insertions, 26 deletions
diff --git a/include/linux/tty.h b/include/linux/tty.h index 84132942902a..7d66ae508e5c 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -252,6 +252,7 @@ struct tty_struct { struct rw_semaphore termios_rwsem; struct mutex winsize_mutex; spinlock_t ctrl_lock; + spinlock_t flow_lock; /* Termios values are protected by the termios rwsem */ struct ktermios termios, termios_locked; struct termiox *termiox; /* May be NULL for unsupported */ @@ -261,8 +262,13 @@ struct tty_struct { unsigned long flags; int count; struct winsize winsize; /* winsize_mutex */ - unsigned char stopped:1, hw_stopped:1, flow_stopped:1, packet:1; - unsigned char ctrl_status; /* ctrl_lock */ + unsigned long stopped:1, /* flow_lock */ + flow_stopped:1, + unused:BITS_PER_LONG - 2; + int hw_stopped; + unsigned long ctrl_status:8, /* ctrl_lock */ + packet:1, + unused_ctrl:BITS_PER_LONG - 9; unsigned int receive_room; /* Bytes free for queue */ int flow_change; @@ -278,7 +284,7 @@ struct tty_struct { #define N_TTY_BUF_SIZE 4096 - unsigned char closing:1; + int closing; unsigned char *write_buf; int write_cnt; /* If the tty has a pending do_SAK, queue it here - akpm */ @@ -310,12 +316,10 @@ struct tty_file_private { #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_CLOSING 7 /* ->close() in progress */ #define TTY_LDISC_OPEN 11 /* Line discipline is open */ #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_HUPPING 21 /* ->hangup() in progress */ #define TTY_LDISC_HALTED 22 /* Line discipline is halted */ #define TTY_WRITE_FLUSH(tty) tty_write_flush((tty)) @@ -397,7 +401,9 @@ extern int tty_paranoia_check(struct tty_struct *tty, struct inode *inode, extern char *tty_name(struct tty_struct *tty, char *buf); extern void tty_wait_until_sent(struct tty_struct *tty, long timeout); extern int tty_check_change(struct tty_struct *tty); +extern void __stop_tty(struct tty_struct *tty); extern void stop_tty(struct tty_struct *tty); +extern void __start_tty(struct tty_struct *tty); extern void start_tty(struct tty_struct *tty); extern int tty_register_driver(struct tty_driver *driver); extern int tty_unregister_driver(struct tty_driver *driver); @@ -411,6 +417,7 @@ 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); extern void tty_write_message(struct tty_struct *tty, char *msg); +extern int tty_send_xchar(struct tty_struct *tty, char ch); extern int tty_put_char(struct tty_struct *tty, unsigned char c); extern int tty_chars_in_buffer(struct tty_struct *tty); extern int tty_write_room(struct tty_struct *tty); @@ -428,14 +435,13 @@ extern int is_ignored(int sig); extern int tty_signal(int sig, struct tty_struct *tty); extern void tty_hangup(struct tty_struct *tty); extern void tty_vhangup(struct tty_struct *tty); -extern void tty_unhangup(struct file *filp); extern int tty_hung_up_p(struct file *filp); extern void do_SAK(struct tty_struct *tty); extern void __do_SAK(struct tty_struct *tty); extern void no_tty(void); extern void tty_flush_to_ldisc(struct tty_struct *tty); extern void tty_buffer_free_all(struct tty_port *port); -extern void tty_buffer_flush(struct tty_struct *tty); +extern void tty_buffer_flush(struct tty_struct *tty, struct tty_ldisc *ld); extern void tty_buffer_init(struct tty_port *port); extern speed_t tty_termios_baud_rate(struct ktermios *termios); extern speed_t tty_termios_input_baud_rate(struct ktermios *termios); @@ -489,14 +495,9 @@ extern int tty_init_termios(struct tty_struct *tty); extern int tty_standard_install(struct tty_driver *driver, struct tty_struct *tty); -extern struct tty_struct *tty_pair_get_tty(struct tty_struct *tty); -extern struct tty_struct *tty_pair_get_pty(struct tty_struct *tty); - extern struct mutex tty_mutex; extern spinlock_t tty_files_lock; -extern void tty_write_unlock(struct tty_struct *tty); -extern int tty_write_lock(struct tty_struct *tty, int ndelay); #define tty_is_writelocked(tty) (mutex_is_locked(&tty->atomic_write_lock)) extern void tty_port_init(struct tty_port *port); @@ -555,7 +556,7 @@ extern int tty_register_ldisc(int disc, struct tty_ldisc_ops *new_ldisc); extern int tty_unregister_ldisc(int disc); extern int tty_set_ldisc(struct tty_struct *tty, int ldisc); extern int tty_ldisc_setup(struct tty_struct *tty, struct tty_struct *o_tty); -extern void tty_ldisc_release(struct tty_struct *tty, struct tty_struct *o_tty); +extern void tty_ldisc_release(struct tty_struct *tty); extern void tty_ldisc_init(struct tty_struct *tty); extern void tty_ldisc_deinit(struct tty_struct *tty); extern void tty_ldisc_begin(void); @@ -616,14 +617,6 @@ extern int n_tty_ioctl_helper(struct tty_struct *tty, struct file *file, extern long n_tty_compat_ioctl_helper(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); -/* serial.c */ - -extern void serial_console_init(void); - -/* pcxx.c */ - -extern int pcxe_open(struct tty_struct *tty, struct file *filp); - /* vt.c */ extern int vt_ioctl(struct tty_struct *tty, @@ -636,11 +629,9 @@ extern long vt_compat_ioctl(struct tty_struct *tty, /* functions for preparation of BKL removal */ extern void __lockfunc tty_lock(struct tty_struct *tty); extern void __lockfunc tty_unlock(struct tty_struct *tty); -extern void __lockfunc tty_lock_pair(struct tty_struct *tty, - struct tty_struct *tty2); -extern void __lockfunc tty_unlock_pair(struct tty_struct *tty, - struct tty_struct *tty2); - +extern void __lockfunc tty_lock_slave(struct tty_struct *tty); +extern void __lockfunc tty_unlock_slave(struct tty_struct *tty); +extern void tty_set_lock_subclass(struct tty_struct *tty); /* * this shall be called only from where BTM is held (like close) * |