http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/linux/tty.h

#ifndef _LINUX_TTY_H #define _LINUX_TTY_H /* * '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 <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 /* * This character is the same as _POSIX_VDISABLE: it cannot be used as * a c_cc[] character, but indicates that a particular special character * isn't in use (eg VINTR has no character etc) */ #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; unsigned char *flag_buf_ptr; int used; int size; int active; int commit; int read; /* Data points here */ unsigned long data[0]; }; struct tty_bufhead { struct work_struct 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 */ }; /* * 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 TTY_NORMAL 0 #define TTY_BREAK 1 #define TTY_FRAME 2 #define TTY_PARITY 3 #define TTY_OVERRUN 4 #define INTR_CHAR(tty) ((tty)->termios->c_cc[VINTR]) #define QUIT_CHAR(tty) ((tty)->termios->c_cc[VQUIT]) #define ERASE_CHAR(tty) ((tty)->termios->c_cc[VERASE]) #define KILL_CHAR(tty) ((tty)->termios->c_cc[VKILL]) #define EOF_CHAR(tty) ((tty)->termios->c_cc[VEOF]) #define TIME_CHAR(tty) ((tty)->termios->c_cc[VTIME]) #define MIN_CHAR(tty) ((tty)->termios->c_cc[VMIN]) #define SWTC_CHAR(tty) ((tty)->termios->c_cc[VSWTC]) #define START_CHAR(tty) ((tty)->termios->c_cc[VSTART]) #define STOP_CHAR(tty) ((tty)->termios->c_cc[VSTOP]) #define SUSP_CHAR(tty) ((tty)->termios->c_cc[VSUSP]) #define EOL_CHAR(tty) ((tty)->termios->c_cc[VEOL]) #define REPRINT_CHAR(tty) ((tty)->termios->c_cc[VREPRINT]) #define DISCARD_CHAR(tty) ((tty)->termios->c_cc[VDISCARD]) #define WERASE_CHAR(tty) ((tty)->termios->c_cc[VWERASE]) #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) struct device; /* * 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 * has been closed --- for things like the baud rate, etc --- it is * not stored here, but rather a pointer to the real state is stored * here. Possible the winsize structure should have the same * treatment, but (1) the default 80x24 is usually right and (2) it's * most often used by a windowing system, which will set the correct * size each time the window is created or resized anyway. * - TYT, 9/14/92 */ struct tty_struct { int magic; struct tty_driver *driver; int index; struct tty_ldisc ldisc; struct semaphore termios_sem; struct termios *termios, *termios_locked; char name[64]; int pgrp; int session; unsigned long flags; int count; struct winsize winsize; unsigned char stopped:1, hw_stopped:1, flow_stopped:1, packet:1; unsigned char low_latency:1, warned:1; unsigned char ctrl_status; unsigned int receive_room; /* Bytes free for queue */ 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; struct work_struct hangup_work; void *disc_data; void *driver_data; 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. */ unsigned int column; unsigned char lnext:1, erasing:1, raw:1, real_raw:1, icanon:1; unsigned char closing: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))]; int canon_data; unsigned long canon_head; unsigned int canon_column; struct semaphore atomic_read; struct semaphore atomic_write; 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; }; /* tty magic number */ #define TTY_MAGIC 0x5401 /* * 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_OTHER_CLOSED 2 /* Other side (if any) has closed */ #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_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 */ #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_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 void console_init(void); extern int vcs_init(void); 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 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 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 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 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 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_wakeup(struct tty_struct *tty); extern void tty_ldisc_flush(struct tty_struct *tty); struct semaphore; extern struct semaphore tty_sem; /* n_tty.c */ extern struct tty_ldisc tty_ldisc_N_TTY; /* tty_ioctl.c */ extern int n_tty_ioctl(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, 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