diff options
Diffstat (limited to 'include/linux/tty.h')
| -rw-r--r-- | include/linux/tty.h | 45 |
1 files changed, 11 insertions, 34 deletions
diff --git a/include/linux/tty.h b/include/linux/tty.h index f0b4eb47297c..8db1b569c37a 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -188,7 +188,9 @@ struct tty_port_operations { }; struct tty_port { + struct tty_bufhead buf; /* Locked internally */ struct tty_struct *tty; /* Back pointer */ + struct tty_struct *itty; /* internal back ptr */ const struct tty_port_operations *ops; /* Port operations */ spinlock_t lock; /* Lock protecting tty field */ int blocked_open; /* Waiting to open */ @@ -197,6 +199,9 @@ struct tty_port { wait_queue_head_t close_wait; /* Close waiters */ wait_queue_head_t delta_msr_wait; /* Modem status change */ unsigned long flags; /* TTY flags ASY_*/ + unsigned long iflags; /* TTYP_ internal flags */ +#define TTYP_FLUSHING 1 /* Flushing to ldisc in progress */ +#define TTYP_FLUSHPENDING 2 /* Queued buffer flush pending */ unsigned char console:1; /* port is a console */ struct mutex mutex; /* Locking */ struct mutex buf_mutex; /* Buffer alloc lock */ @@ -235,6 +240,7 @@ struct tty_struct { struct mutex ldisc_mutex; struct tty_ldisc *ldisc; + struct mutex atomic_write_lock; struct mutex legacy_mutex; struct mutex termios_mutex; spinlock_t ctrl_lock; @@ -254,7 +260,6 @@ struct tty_struct { struct tty_struct *link; struct fasync_struct *fasync; - struct tty_bufhead buf; /* Locked internally */ int alt_speed; /* For magic substitution of 38400 bps */ wait_queue_head_t write_wait; wait_queue_head_t read_wait; @@ -265,37 +270,10 @@ struct tty_struct { #define N_TTY_BUF_SIZE 4096 - /* - * The following is data for the N_TTY line discipline. For - * historical reasons, this is included in the tty structure. - * Mostly locked by the BKL. - */ - unsigned int column; - unsigned char lnext:1, erasing:1, raw:1, real_raw:1, icanon:1; unsigned char closing:1; - unsigned char echo_overrun:1; unsigned short minimum_to_wake; - unsigned long overrun_time; - int num_overrun; - unsigned long process_char_map[256/(8*sizeof(unsigned long))]; - char *read_buf; - int read_head; - int read_tail; - int read_cnt; - unsigned long read_flags[N_TTY_BUF_SIZE/(8*sizeof(unsigned long))]; - unsigned char *echo_buf; - unsigned int echo_pos; - unsigned int echo_cnt; - int canon_data; - unsigned long canon_head; - unsigned int canon_column; - struct mutex atomic_read_lock; - struct mutex atomic_write_lock; - struct mutex output_lock; - struct mutex echo_lock; unsigned char *write_buf; int write_cnt; - spinlock_t read_lock; /* If the tty has a pending do_SAK, queue it here - akpm */ struct work_struct SAK_work; struct tty_port *port; @@ -335,8 +313,6 @@ struct tty_file_private { #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_FLUSHING 19 /* Flushing to ldisc in progress */ -#define TTY_FLUSHPENDING 20 /* Queued buffer flush pending */ #define TTY_HUPPING 21 /* ->hangup() in progress */ #define TTY_WRITE_FLUSH(tty) tty_write_flush((tty)) @@ -412,9 +388,9 @@ extern void disassociate_ctty(int priv); extern void no_tty(void); extern void tty_flip_buffer_push(struct tty_struct *tty); extern void tty_flush_to_ldisc(struct tty_struct *tty); -extern void tty_buffer_free_all(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_init(struct tty_struct *tty); +extern void tty_buffer_init(struct tty_port *port); 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); @@ -479,6 +455,7 @@ extern struct device *tty_port_register_device_attr(struct tty_port *port, const struct attribute_group **attr_grp); extern int tty_port_alloc_xmit_buf(struct tty_port *port); extern void tty_port_free_xmit_buf(struct tty_port *port); +extern void tty_port_destroy(struct tty_port *port); extern void tty_port_put(struct tty_port *port); static inline struct tty_port *tty_port_get(struct tty_port *port) @@ -535,7 +512,7 @@ extern void n_tty_inherit_ops(struct tty_ldisc_ops *ops); /* tty_audit.c */ #ifdef CONFIG_AUDIT extern void tty_audit_add_data(struct tty_struct *tty, unsigned char *data, - size_t size); + size_t size, unsigned icanon); extern void tty_audit_exit(void); extern void tty_audit_fork(struct signal_struct *sig); extern void tty_audit_tiocsti(struct tty_struct *tty, char ch); @@ -544,7 +521,7 @@ extern int tty_audit_push_task(struct task_struct *tsk, kuid_t loginuid, u32 sessionid); #else static inline void tty_audit_add_data(struct tty_struct *tty, - unsigned char *data, size_t size) + unsigned char *data, size_t size, unsigned icanon) { } static inline void tty_audit_tiocsti(struct tty_struct *tty, char ch) |