diff options
Diffstat (limited to 'include/linux/tty.h')
| -rw-r--r-- | include/linux/tty.h | 45 |
1 files changed, 38 insertions, 7 deletions
diff --git a/include/linux/tty.h b/include/linux/tty.h index 40144f382516..79c30daf46a9 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -217,12 +217,18 @@ struct tty_port_operations { /* Called on the final put of a port */ void (*destruct)(struct tty_port *port); }; - + +struct tty_port_client_operations { + int (*receive_buf)(struct tty_port *port, const unsigned char *, const unsigned char *, size_t); + void (*write_wakeup)(struct tty_port *port); +}; + 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 */ + const struct tty_port_client_operations *client_ops; /* Port client operations */ spinlock_t lock; /* Lock protecting tty field */ int blocked_open; /* Waiting to open */ int count; /* Usage count */ @@ -241,6 +247,7 @@ struct tty_port { based drain is needed else set to size of fifo */ struct kref kref; /* Ref counter */ + void *client_data; }; /* tty_port::iflags bits -- use atomic bit ops */ @@ -309,7 +316,6 @@ struct tty_struct { struct tty_struct *link; struct fasync_struct *fasync; - int alt_speed; /* For magic substitution of 38400 bps */ wait_queue_head_t write_wait; wait_queue_head_t read_wait; struct work_struct hangup_work; @@ -326,7 +332,7 @@ struct tty_struct { /* If the tty has a pending do_SAK, queue it here - akpm */ struct work_struct SAK_work; struct tty_port *port; -}; +} __randomize_layout; /* Each of a tty's open files has private_data pointing to tty_file_private */ struct tty_file_private { @@ -383,7 +389,6 @@ static inline bool tty_throttled(struct tty_struct *tty) } #ifdef CONFIG_TTY -extern void console_init(void); extern void tty_kref_put(struct tty_struct *tty); extern struct pid *tty_get_pgrp(struct tty_struct *tty); extern void tty_vhangup_self(void); @@ -394,9 +399,10 @@ extern struct tty_struct *get_current_tty(void); /* tty_io.c */ extern int __init tty_init(void); extern const char *tty_name(const struct tty_struct *tty); +extern struct tty_struct *tty_open_by_driver(dev_t device, struct inode *inode, + struct file *filp); +extern int tty_dev_name_to_number(const char *name, dev_t *number); #else -static inline void console_init(void) -{ } static inline void tty_kref_put(struct tty_struct *tty) { } static inline struct pid *tty_get_pgrp(struct tty_struct *tty) @@ -416,6 +422,11 @@ static inline int __init tty_init(void) { return 0; } static inline const char *tty_name(const struct tty_struct *tty) { return "(none)"; } +static inline struct tty_struct *tty_open_by_driver(dev_t device, + struct inode *inode, struct file *filp) +{ return NULL; } +static inline int tty_dev_name_to_number(const char *name, dev_t *number) +{ return -ENOTSUPP; } #endif extern struct ktermios tty_std_termios; @@ -471,9 +482,13 @@ extern int tty_do_resize(struct tty_struct *tty, struct winsize *ws); extern int is_current_pgrp_orphaned(void); extern void tty_hangup(struct tty_struct *tty); extern void tty_vhangup(struct tty_struct *tty); +extern void tty_vhangup_session(struct tty_struct *tty); 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 tty_open_proc_set_tty(struct file *filp, struct tty_struct *tty); +extern int tty_signal_session_leader(struct tty_struct *tty, int exit_session); +extern void session_clear_tty(struct pid *session); extern void no_tty(void); extern void tty_buffer_free_all(struct tty_port *port); extern void tty_buffer_flush(struct tty_struct *tty, struct tty_ldisc *ld); @@ -521,6 +536,8 @@ 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 long tty_jobctrl_ioctl(struct tty_struct *tty, struct tty_struct *real_tty, + struct file *file, unsigned int cmd, unsigned long arg); extern int tty_perform_flush(struct tty_struct *tty, unsigned long arg); extern void tty_default_fops(struct file_operations *fops); extern struct tty_struct *alloc_tty_struct(struct tty_driver *driver, int idx); @@ -528,6 +545,7 @@ extern int tty_alloc_file(struct file *file); extern void tty_add_file(struct tty_struct *tty, struct file *file); extern void tty_free_file(struct file *file); extern struct tty_struct *tty_init_dev(struct tty_driver *driver, int idx); +extern void tty_release_struct(struct tty_struct *tty, int idx); extern int tty_release(struct inode *inode, struct file *filp); extern void tty_init_termios(struct tty_struct *tty); extern int tty_standard_install(struct tty_driver *driver, @@ -547,6 +565,15 @@ extern struct device *tty_port_register_device_attr(struct tty_port *port, struct tty_driver *driver, unsigned index, struct device *device, void *drvdata, const struct attribute_group **attr_grp); +extern struct device *tty_port_register_device_serdev(struct tty_port *port, + struct tty_driver *driver, unsigned index, + struct device *device); +extern struct device *tty_port_register_device_attr_serdev(struct tty_port *port, + struct tty_driver *driver, unsigned index, + struct device *device, void *drvdata, + const struct attribute_group **attr_grp); +extern void tty_port_unregister_device(struct tty_port *port, + struct tty_driver *driver, unsigned index); 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); @@ -656,12 +683,16 @@ extern int tty_ldisc_setup(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 int tty_ldisc_receive_buf(struct tty_ldisc *ld, unsigned char *p, +extern int tty_ldisc_receive_buf(struct tty_ldisc *ld, const unsigned char *p, char *f, int count); /* n_tty.c */ extern void n_tty_inherit_ops(struct tty_ldisc_ops *ops); +#ifdef CONFIG_TTY extern void __init n_tty_init(void); +#else +static inline void n_tty_init(void) { } +#endif /* tty_audit.c */ #ifdef CONFIG_AUDIT |