* '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/fs.h>
#include <linux/major.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>
* (Note: the *_driver.minor_start values 1, 64, 128, 192 are
* hardcoded at present.)
*/
-#define NR_PTYS CONFIG_LEGACY_PTY_COUNT /* Number of legacy ptys */
#define NR_UNIX98_PTY_DEFAULT 4096 /* Default maximum for Unix98 ptys */
#define NR_UNIX98_PTY_MAX (1 << MINORBITS) /* Absolute limit */
-#define NR_LDISCS 16
+#define NR_LDISCS 20
+
+/* line disciplines */
+#define N_TTY 0
+#define N_SLIP 1
+#define N_MOUSE 2
+#define N_PPP 3
+#define N_STRIP 4
+#define N_AX25 5
+#define N_X25 6 /* X.25 async */
+#define N_6PACK 7
+#define N_MASC 8 /* Reserved for Mobitex module <kaz@cafe.net> */
+#define N_R3964 9 /* Reserved for Simatic R3964 module */
+#define N_PROFIBUS_FDL 10 /* Reserved for Profibus */
+#define N_IRDA 11 /* Linux IrDa - http://irda.sourceforge.net/ */
+#define N_SMSBLOCK 12 /* SMS block mode - for talking to GSM data */
+ /* cards about SMS messages */
+#define N_HDLC 13 /* synchronous HDLC */
+#define N_SYNC_PPP 14 /* synchronous PPP */
+#define N_HCI 15 /* Bluetooth HCI UART */
+#define N_GIGASET_M101 16 /* Siemens Gigaset M101 serial DECT adapter */
+#define N_SLCAN 17 /* Serial / USB serial CAN Adaptors */
+#define N_PPS 18 /* Pulse per Second */
+
+#define N_V253 19 /* Codec control over voice modem */
/*
* This character is the same as _POSIX_VDISABLE: it cannot be used as
*/
#define __DISABLED_CHAR '\0'
-/*
- * This is the flip buffer used for the tty driver. The buffer is
- * located in the tty structure, and is used as a high speed interface
- * between the tty driver and the tty line discipline.
- */
-#define TTY_FLIPBUF_SIZE 512
-
struct tty_buffer {
struct tty_buffer *next;
char *char_buf_ptr;
};
struct tty_bufhead {
- struct work_struct work;
- struct semaphore pty_sem;
+ struct delayed_work work;
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
- */
-#define PTY_BUF_SIZE 4*TTY_FLIPBUF_SIZE
-
/*
* When a break, frame error, or parity error happens, these codes are
* stuffed into the flags buffer.
#define LNEXT_CHAR(tty) ((tty)->termios->c_cc[VLNEXT])
#define EOL2_CHAR(tty) ((tty)->termios->c_cc[VEOL2])
-#define _I_FLAG(tty,f) ((tty)->termios->c_iflag & (f))
-#define _O_FLAG(tty,f) ((tty)->termios->c_oflag & (f))
-#define _C_FLAG(tty,f) ((tty)->termios->c_cflag & (f))
-#define _L_FLAG(tty,f) ((tty)->termios->c_lflag & (f))
-
-#define I_IGNBRK(tty) _I_FLAG((tty),IGNBRK)
-#define I_BRKINT(tty) _I_FLAG((tty),BRKINT)
-#define I_IGNPAR(tty) _I_FLAG((tty),IGNPAR)
-#define I_PARMRK(tty) _I_FLAG((tty),PARMRK)
-#define I_INPCK(tty) _I_FLAG((tty),INPCK)
-#define I_ISTRIP(tty) _I_FLAG((tty),ISTRIP)
-#define I_INLCR(tty) _I_FLAG((tty),INLCR)
-#define I_IGNCR(tty) _I_FLAG((tty),IGNCR)
-#define I_ICRNL(tty) _I_FLAG((tty),ICRNL)
-#define I_IUCLC(tty) _I_FLAG((tty),IUCLC)
-#define I_IXON(tty) _I_FLAG((tty),IXON)
-#define I_IXANY(tty) _I_FLAG((tty),IXANY)
-#define I_IXOFF(tty) _I_FLAG((tty),IXOFF)
-#define I_IMAXBEL(tty) _I_FLAG((tty),IMAXBEL)
-#define I_IUTF8(tty) _I_FLAG((tty),IUTF8)
-
-#define O_OPOST(tty) _O_FLAG((tty),OPOST)
-#define O_OLCUC(tty) _O_FLAG((tty),OLCUC)
-#define O_ONLCR(tty) _O_FLAG((tty),ONLCR)
-#define O_OCRNL(tty) _O_FLAG((tty),OCRNL)
-#define O_ONOCR(tty) _O_FLAG((tty),ONOCR)
-#define O_ONLRET(tty) _O_FLAG((tty),ONLRET)
-#define O_OFILL(tty) _O_FLAG((tty),OFILL)
-#define O_OFDEL(tty) _O_FLAG((tty),OFDEL)
-#define O_NLDLY(tty) _O_FLAG((tty),NLDLY)
-#define O_CRDLY(tty) _O_FLAG((tty),CRDLY)
-#define O_TABDLY(tty) _O_FLAG((tty),TABDLY)
-#define O_BSDLY(tty) _O_FLAG((tty),BSDLY)
-#define O_VTDLY(tty) _O_FLAG((tty),VTDLY)
-#define O_FFDLY(tty) _O_FLAG((tty),FFDLY)
-
-#define C_BAUD(tty) _C_FLAG((tty),CBAUD)
-#define C_CSIZE(tty) _C_FLAG((tty),CSIZE)
-#define C_CSTOPB(tty) _C_FLAG((tty),CSTOPB)
-#define C_CREAD(tty) _C_FLAG((tty),CREAD)
-#define C_PARENB(tty) _C_FLAG((tty),PARENB)
-#define C_PARODD(tty) _C_FLAG((tty),PARODD)
-#define C_HUPCL(tty) _C_FLAG((tty),HUPCL)
-#define C_CLOCAL(tty) _C_FLAG((tty),CLOCAL)
-#define C_CIBAUD(tty) _C_FLAG((tty),CIBAUD)
-#define C_CRTSCTS(tty) _C_FLAG((tty),CRTSCTS)
-
-#define L_ISIG(tty) _L_FLAG((tty),ISIG)
-#define L_ICANON(tty) _L_FLAG((tty),ICANON)
-#define L_XCASE(tty) _L_FLAG((tty),XCASE)
-#define L_ECHO(tty) _L_FLAG((tty),ECHO)
-#define L_ECHOE(tty) _L_FLAG((tty),ECHOE)
-#define L_ECHOK(tty) _L_FLAG((tty),ECHOK)
-#define L_ECHONL(tty) _L_FLAG((tty),ECHONL)
-#define L_NOFLSH(tty) _L_FLAG((tty),NOFLSH)
-#define L_TOSTOP(tty) _L_FLAG((tty),TOSTOP)
-#define L_ECHOCTL(tty) _L_FLAG((tty),ECHOCTL)
-#define L_ECHOPRT(tty) _L_FLAG((tty),ECHOPRT)
-#define L_ECHOKE(tty) _L_FLAG((tty),ECHOKE)
-#define L_FLUSHO(tty) _L_FLAG((tty),FLUSHO)
-#define L_PENDIN(tty) _L_FLAG((tty),PENDIN)
-#define L_IEXTEN(tty) _L_FLAG((tty),IEXTEN)
+#define _I_FLAG(tty, f) ((tty)->termios->c_iflag & (f))
+#define _O_FLAG(tty, f) ((tty)->termios->c_oflag & (f))
+#define _C_FLAG(tty, f) ((tty)->termios->c_cflag & (f))
+#define _L_FLAG(tty, f) ((tty)->termios->c_lflag & (f))
+
+#define I_IGNBRK(tty) _I_FLAG((tty), IGNBRK)
+#define I_BRKINT(tty) _I_FLAG((tty), BRKINT)
+#define I_IGNPAR(tty) _I_FLAG((tty), IGNPAR)
+#define I_PARMRK(tty) _I_FLAG((tty), PARMRK)
+#define I_INPCK(tty) _I_FLAG((tty), INPCK)
+#define I_ISTRIP(tty) _I_FLAG((tty), ISTRIP)
+#define I_INLCR(tty) _I_FLAG((tty), INLCR)
+#define I_IGNCR(tty) _I_FLAG((tty), IGNCR)
+#define I_ICRNL(tty) _I_FLAG((tty), ICRNL)
+#define I_IUCLC(tty) _I_FLAG((tty), IUCLC)
+#define I_IXON(tty) _I_FLAG((tty), IXON)
+#define I_IXANY(tty) _I_FLAG((tty), IXANY)
+#define I_IXOFF(tty) _I_FLAG((tty), IXOFF)
+#define I_IMAXBEL(tty) _I_FLAG((tty), IMAXBEL)
+#define I_IUTF8(tty) _I_FLAG((tty), IUTF8)
+
+#define O_OPOST(tty) _O_FLAG((tty), OPOST)
+#define O_OLCUC(tty) _O_FLAG((tty), OLCUC)
+#define O_ONLCR(tty) _O_FLAG((tty), ONLCR)
+#define O_OCRNL(tty) _O_FLAG((tty), OCRNL)
+#define O_ONOCR(tty) _O_FLAG((tty), ONOCR)
+#define O_ONLRET(tty) _O_FLAG((tty), ONLRET)
+#define O_OFILL(tty) _O_FLAG((tty), OFILL)
+#define O_OFDEL(tty) _O_FLAG((tty), OFDEL)
+#define O_NLDLY(tty) _O_FLAG((tty), NLDLY)
+#define O_CRDLY(tty) _O_FLAG((tty), CRDLY)
+#define O_TABDLY(tty) _O_FLAG((tty), TABDLY)
+#define O_BSDLY(tty) _O_FLAG((tty), BSDLY)
+#define O_VTDLY(tty) _O_FLAG((tty), VTDLY)
+#define O_FFDLY(tty) _O_FLAG((tty), FFDLY)
+
+#define C_BAUD(tty) _C_FLAG((tty), CBAUD)
+#define C_CSIZE(tty) _C_FLAG((tty), CSIZE)
+#define C_CSTOPB(tty) _C_FLAG((tty), CSTOPB)
+#define C_CREAD(tty) _C_FLAG((tty), CREAD)
+#define C_PARENB(tty) _C_FLAG((tty), PARENB)
+#define C_PARODD(tty) _C_FLAG((tty), PARODD)
+#define C_HUPCL(tty) _C_FLAG((tty), HUPCL)
+#define C_CLOCAL(tty) _C_FLAG((tty), CLOCAL)
+#define C_CIBAUD(tty) _C_FLAG((tty), CIBAUD)
+#define C_CRTSCTS(tty) _C_FLAG((tty), CRTSCTS)
+
+#define L_ISIG(tty) _L_FLAG((tty), ISIG)
+#define L_ICANON(tty) _L_FLAG((tty), ICANON)
+#define L_XCASE(tty) _L_FLAG((tty), XCASE)
+#define L_ECHO(tty) _L_FLAG((tty), ECHO)
+#define L_ECHOE(tty) _L_FLAG((tty), ECHOE)
+#define L_ECHOK(tty) _L_FLAG((tty), ECHOK)
+#define L_ECHONL(tty) _L_FLAG((tty), ECHONL)
+#define L_NOFLSH(tty) _L_FLAG((tty), NOFLSH)
+#define L_TOSTOP(tty) _L_FLAG((tty), TOSTOP)
+#define L_ECHOCTL(tty) _L_FLAG((tty), ECHOCTL)
+#define L_ECHOPRT(tty) _L_FLAG((tty), ECHOPRT)
+#define L_ECHOKE(tty) _L_FLAG((tty), ECHOKE)
+#define L_FLUSHO(tty) _L_FLAG((tty), FLUSHO)
+#define L_PENDIN(tty) _L_FLAG((tty), PENDIN)
+#define L_IEXTEN(tty) _L_FLAG((tty), IEXTEN)
struct device;
+struct signal_struct;
+
+/*
+ * Port level information. Each device keeps its own port level information
+ * so provide a common structure for those ports wanting to use common support
+ * routines.
+ *
+ * The tty port has a different lifetime to the tty so must be kept apart.
+ * In addition be careful as tty -> port mappings are valid for the life
+ * of the tty object but in many cases port -> tty mappings are valid only
+ * until a hangup so don't use the wrong path.
+ */
+
+struct tty_port;
+
+struct tty_port_operations {
+ /* Return 1 if the carrier is raised */
+ int (*carrier_raised)(struct tty_port *port);
+ /* Control the DTR line */
+ void (*dtr_rts)(struct tty_port *port, int raise);
+ /* Called when the last close completes or a hangup finishes
+ IFF the port was initialized. Do not use to free resources. Called
+ under the port mutex to serialize against activate/shutdowns */
+ void (*shutdown)(struct tty_port *port);
+ void (*drop)(struct tty_port *port);
+ /* Called under the port mutex from tty_port_open, serialized using
+ the port mutex */
+ /* FIXME: long term getting the tty argument *out* of this would be
+ good for consoles */
+ int (*activate)(struct tty_port *port, struct tty_struct *tty);
+ /* Called on the final put of a port */
+ void (*destruct)(struct tty_port *port);
+};
+
+struct tty_port {
+ struct tty_struct *tty; /* Back pointer */
+ const struct tty_port_operations *ops; /* Port operations */
+ spinlock_t lock; /* Lock protecting tty field */
+ int blocked_open; /* Waiting to open */
+ int count; /* Usage count */
+ wait_queue_head_t open_wait; /* Open waiters */
+ wait_queue_head_t close_wait; /* Close waiters */
+ wait_queue_head_t delta_msr_wait; /* Modem status change */
+ unsigned long flags; /* TTY flags ASY_*/
+ struct mutex mutex; /* Locking */
+ struct mutex buf_mutex; /* Buffer alloc lock */
+ unsigned char *xmit_buf; /* Optional buffer */
+ unsigned int close_delay; /* Close port delay */
+ unsigned int closing_wait; /* Delay for output */
+ int drain_delay; /* Set to zero if no pure time
+ based drain is needed else
+ set to size of fifo */
+ struct kref kref; /* Ref counter */
+};
+
/*
* Where all of the state associated with a tty is kept while the tty
* is open. Since the termios state should be kept even if the tty
* size each time the window is created or resized anyway.
* - TYT, 9/14/92
*/
+
+struct tty_operations;
+
struct tty_struct {
int magic;
+ struct kref kref;
struct tty_driver *driver;
+ const struct tty_operations *ops;
int index;
- struct tty_ldisc ldisc;
- struct semaphore termios_sem;
- struct termios *termios, *termios_locked;
+
+ /* Protects ldisc changes: Lock tty not pty */
+ struct mutex ldisc_mutex;
+ struct tty_ldisc *ldisc;
+
+ struct mutex termios_mutex;
+ spinlock_t ctrl_lock;
+ /* Termios values are protected by the termios mutex */
+ struct ktermios *termios, *termios_locked;
+ struct termiox *termiox; /* May be NULL for unsupported */
char name[64];
- int pgrp;
- int session;
+ struct pid *pgrp; /* Protected by ctrl lock */
+ struct pid *session;
unsigned long flags;
int count;
- struct winsize winsize;
+ struct winsize winsize; /* termios mutex */
unsigned char stopped:1, hw_stopped:1, flow_stopped:1, packet:1;
unsigned char low_latency:1, warned:1;
- unsigned char ctrl_status;
+ unsigned char ctrl_status; /* ctrl_lock */
unsigned int receive_room; /* Bytes free for queue */
struct tty_struct *link;
struct fasync_struct *fasync;
- struct tty_bufhead buf;
- int max_flip_cnt;
+ 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;
struct list_head tty_files;
#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;
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;
};
/* tty magic number */
/*
* These bits are used in the flags field of the tty structure.
- *
+ *
* So that interrupts won't be able to mess up the queues,
* copy_to_cooked must be atomic with respect to itself, as must
* tty->write. Thus, you must use the inline functions set_bit() and
* clear_bit() to make things atomic.
*/
#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_IO_ERROR 1 /* Cause 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_PUSH 6 /* n_tty private */
#define TTY_CLOSING 7 /* ->close() in progress */
#define TTY_LDISC 9 /* Line discipline attached */
+#define TTY_LDISC_CHANGING 10 /* Line discipline changing */
+#define TTY_LDISC_OPEN 11 /* Line discipline is open */
#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_FLUSHING 19 /* Flushing to ldisc in progress */
+#define TTY_FLUSHPENDING 20 /* Queued buffer flush pending */
#define TTY_WRITE_FLUSH(tty) tty_write_flush((tty))
extern void tty_write_flush(struct tty_struct *);
-extern struct termios tty_std_termios;
-extern int fg_console, last_console, want_console;
-
-extern int kmsg_redirect;
+extern struct ktermios tty_std_termios;
extern void console_init(void);
extern int vcs_init(void);
+extern struct class *tty_class;
+
+/**
+ * tty_kref_get - get a tty reference
+ * @tty: tty device
+ *
+ * Return a new reference to a tty object. The caller must hold
+ * sufficient locks/counts to ensure that their existing reference cannot
+ * go away
+ */
+
+static inline struct tty_struct *tty_kref_get(struct tty_struct *tty)
+{
+ if (tty)
+ kref_get(&tty->kref);
+ return tty;
+}
+extern void tty_kref_put(struct tty_struct *tty);
+
extern int tty_paranoia_check(struct tty_struct *tty, struct inode *inode,
const char *routine);
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 start_tty(struct tty_struct * tty);
-extern int tty_register_ldisc(int disc, struct tty_ldisc *new_ldisc);
-extern int tty_unregister_ldisc(int disc);
+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 start_tty(struct tty_struct *tty);
extern int tty_register_driver(struct tty_driver *driver);
extern int tty_unregister_driver(struct tty_driver *driver);
-extern struct class_device *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);
extern void tty_write_message(struct tty_struct *tty, char *msg);
-
-extern int is_orphaned_pgrp(int pgrp);
+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);
+extern void tty_driver_flush_buffer(struct tty_struct *tty);
+extern void tty_throttle(struct tty_struct *tty);
+extern void tty_unthrottle(struct tty_struct *tty);
+extern int tty_do_resize(struct tty_struct *tty, struct winsize *ws);
+extern void tty_shutdown(struct tty_struct *tty);
+extern void tty_free_termios(struct tty_struct *tty);
+extern int is_current_pgrp_orphaned(void);
+extern struct pid *tty_get_pgrp(struct tty_struct *tty);
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_hangup(struct tty_struct *tty);
+extern void tty_vhangup(struct tty_struct *tty);
+extern void tty_vhangup_self(void);
extern void tty_unhangup(struct file *filp);
-extern int tty_hung_up_p(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 disassociate_ctty(int priv);
+extern void no_tty(void);
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 void tty_flush_to_ldisc(struct tty_struct *tty);
+extern void tty_buffer_free_all(struct tty_struct *tty);
+extern void tty_buffer_flush(struct tty_struct *tty);
+extern void tty_buffer_init(struct tty_struct *tty);
+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 void tty_termios_encode_baud_rate(struct ktermios *termios,
+ speed_t ibaud, speed_t obaud);
+extern void tty_encode_baud_rate(struct tty_struct *tty,
+ speed_t ibaud, speed_t obaud);
+extern void tty_termios_copy_hw(struct ktermios *new, struct ktermios *old);
+extern int tty_termios_hw_change(struct ktermios *a, struct ktermios *b);
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_ldisc_hangup(struct tty_struct *tty);
+extern const struct file_operations tty_ldiscs_proc_fops;
extern void tty_wakeup(struct tty_struct *tty);
extern void tty_ldisc_flush(struct tty_struct *tty);
+extern long tty_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
+extern int tty_mode_ioctl(struct tty_struct *tty, struct file *file,
+ unsigned int cmd, unsigned long arg);
+extern int tty_perform_flush(struct tty_struct *tty, unsigned long arg);
+extern dev_t tty_devnum(struct tty_struct *tty);
+extern void proc_clear_tty(struct task_struct *p);
+extern struct tty_struct *get_current_tty(void);
+extern void tty_default_fops(struct file_operations *fops);
+extern struct tty_struct *alloc_tty_struct(void);
+extern void free_tty_struct(struct tty_struct *tty);
+extern void initialize_tty_struct(struct tty_struct *tty,
+ struct tty_driver *driver, int idx);
+extern struct tty_struct *tty_init_dev(struct tty_driver *driver, int idx,
+ int first_ok);
+extern int tty_release(struct inode *inode, struct file *filp);
+extern int tty_init_termios(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 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);
+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_put(struct tty_port *port);
+
+static inline struct tty_port *tty_port_get(struct tty_port *port)
+{
+ if (port)
+ kref_get(&port->kref);
+ return port;
+}
+
+extern struct tty_struct *tty_port_tty_get(struct tty_port *port);
+extern void tty_port_tty_set(struct tty_port *port, struct tty_struct *tty);
+extern int tty_port_carrier_raised(struct tty_port *port);
+extern void tty_port_raise_dtr_rts(struct tty_port *port);
+extern void tty_port_lower_dtr_rts(struct tty_port *port);
+extern void tty_port_hangup(struct tty_port *port);
+extern int tty_port_block_til_ready(struct tty_port *port,
+ struct tty_struct *tty, struct file *filp);
+extern int tty_port_close_start(struct tty_port *port,
+ struct tty_struct *tty, struct file *filp);
+extern void tty_port_close_end(struct tty_port *port, struct tty_struct *tty);
+extern void tty_port_close(struct tty_port *port,
+ struct tty_struct *tty, struct file *filp);
+extern int tty_port_open(struct tty_port *port,
+ struct tty_struct *tty, struct file *filp);
+static inline int tty_port_users(struct tty_port *port)
+{
+ return port->count + port->blocked_open;
+}
+
+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_init(struct tty_struct *tty);
+extern void tty_ldisc_begin(void);
+/* This last one is just for the tty layer internals and shouldn't be used elsewhere */
+extern void tty_ldisc_enable(struct tty_struct *tty);
+
+
/* n_tty.c */
-extern struct tty_ldisc tty_ldisc_N_TTY;
+extern struct tty_ldisc_ops tty_ldisc_N_TTY;
+
+/* tty_audit.c */
+#ifdef CONFIG_AUDIT
+extern void tty_audit_add_data(struct tty_struct *tty, unsigned char *data,
+ size_t size);
+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);
+extern void tty_audit_push(struct tty_struct *tty);
+extern void tty_audit_push_task(struct task_struct *tsk,
+ uid_t loginuid, u32 sessionid);
+#else
+static inline void tty_audit_add_data(struct tty_struct *tty,
+ unsigned char *data, size_t size)
+{
+}
+static inline void tty_audit_tiocsti(struct tty_struct *tty, char ch)
+{
+}
+static inline void tty_audit_exit(void)
+{
+}
+static inline void tty_audit_fork(struct signal_struct *sig)
+{
+}
+static inline void tty_audit_push(struct tty_struct *tty)
+{
+}
+static inline void tty_audit_push_task(struct task_struct *tsk,
+ uid_t loginuid, u32 sessionid)
+{
+}
+#endif
/* tty_ioctl.c */
-extern int n_tty_ioctl(struct tty_struct * tty, struct file * file,
+extern int n_tty_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);
-/* printk.c */
-
-extern void console_print(const char *);
-
/* vt.c */
-extern int vt_ioctl(struct tty_struct *tty, struct file * file,
+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;
-}
+extern long vt_compat_ioctl(struct tty_struct *tty, struct file * file,
+ unsigned int cmd, unsigned long arg);
#endif /* __KERNEL__ */
#endif
Code Review / linux-2.6.git / blobdiff