Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef _LINUX_TTY_H |
| 2 | #define _LINUX_TTY_H |
| 3 | |
| 4 | /* |
| 5 | * 'tty.h' defines some structures used by tty_io.c and some defines. |
| 6 | */ |
| 7 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | #ifdef __KERNEL__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | #include <linux/fs.h> |
| 10 | #include <linux/major.h> |
| 11 | #include <linux/termios.h> |
| 12 | #include <linux/workqueue.h> |
| 13 | #include <linux/tty_driver.h> |
| 14 | #include <linux/tty_ldisc.h> |
Ingo Molnar | 70522e1 | 2006-03-23 03:00:31 -0800 | [diff] [blame] | 15 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | |
| 17 | #include <asm/system.h> |
| 18 | |
| 19 | |
| 20 | /* |
| 21 | * (Note: the *_driver.minor_start values 1, 64, 128, 192 are |
| 22 | * hardcoded at present.) |
| 23 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #define NR_UNIX98_PTY_DEFAULT 4096 /* Default maximum for Unix98 ptys */ |
| 25 | #define NR_UNIX98_PTY_MAX (1 << MINORBITS) /* Absolute limit */ |
Oliver Hartkopp | cd05acf | 2007-12-16 15:59:24 -0800 | [diff] [blame] | 26 | #define NR_LDISCS 18 |
Tilman Schmidt | 4564f9e | 2007-02-10 01:45:00 -0800 | [diff] [blame] | 27 | |
| 28 | /* line disciplines */ |
| 29 | #define N_TTY 0 |
| 30 | #define N_SLIP 1 |
| 31 | #define N_MOUSE 2 |
| 32 | #define N_PPP 3 |
| 33 | #define N_STRIP 4 |
| 34 | #define N_AX25 5 |
| 35 | #define N_X25 6 /* X.25 async */ |
| 36 | #define N_6PACK 7 |
| 37 | #define N_MASC 8 /* Reserved for Mobitex module <kaz@cafe.net> */ |
| 38 | #define N_R3964 9 /* Reserved for Simatic R3964 module */ |
| 39 | #define N_PROFIBUS_FDL 10 /* Reserved for Profibus <Dave@mvhi.com> */ |
| 40 | #define N_IRDA 11 /* Linux IrDa - http://irda.sourceforge.net/ */ |
| 41 | #define N_SMSBLOCK 12 /* SMS block mode - for talking to GSM data */ |
| 42 | /* cards about SMS messages */ |
| 43 | #define N_HDLC 13 /* synchronous HDLC */ |
| 44 | #define N_SYNC_PPP 14 /* synchronous PPP */ |
| 45 | #define N_HCI 15 /* Bluetooth HCI UART */ |
| 46 | #define N_GIGASET_M101 16 /* Siemens Gigaset M101 serial DECT adapter */ |
Oliver Hartkopp | cd05acf | 2007-12-16 15:59:24 -0800 | [diff] [blame] | 47 | #define N_SLCAN 17 /* Serial / USB serial CAN Adaptors */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | |
| 49 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | * This character is the same as _POSIX_VDISABLE: it cannot be used as |
| 51 | * a c_cc[] character, but indicates that a particular special character |
| 52 | * isn't in use (eg VINTR has no character etc) |
| 53 | */ |
| 54 | #define __DISABLED_CHAR '\0' |
| 55 | |
| 56 | /* |
| 57 | * This is the flip buffer used for the tty driver. The buffer is |
| 58 | * located in the tty structure, and is used as a high speed interface |
| 59 | * between the tty driver and the tty line discipline. |
| 60 | */ |
| 61 | #define TTY_FLIPBUF_SIZE 512 |
| 62 | |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 63 | struct tty_buffer { |
| 64 | struct tty_buffer *next; |
| 65 | char *char_buf_ptr; |
| 66 | unsigned char *flag_buf_ptr; |
| 67 | int used; |
| 68 | int size; |
Paul Fulghum | 8977d92 | 2006-02-10 01:51:14 -0800 | [diff] [blame] | 69 | int commit; |
| 70 | int read; |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 71 | /* Data points here */ |
| 72 | unsigned long data[0]; |
| 73 | }; |
| 74 | |
| 75 | struct tty_bufhead { |
David Howells | 52bad64 | 2006-11-22 14:54:01 +0000 | [diff] [blame] | 76 | struct delayed_work work; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | struct semaphore pty_sem; |
Paul Fulghum | 808249c | 2006-02-03 03:04:41 -0800 | [diff] [blame] | 78 | spinlock_t lock; |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 79 | struct tty_buffer *head; /* Queue head */ |
| 80 | struct tty_buffer *tail; /* Active buffer */ |
| 81 | struct tty_buffer *free; /* Free queue head */ |
Alan Cox | 01da5fd | 2006-08-27 01:24:02 -0700 | [diff] [blame] | 82 | int memory_used; /* Buffer space used excluding free queue */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | }; |
| 84 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | * When a break, frame error, or parity error happens, these codes are |
| 86 | * stuffed into the flags buffer. |
| 87 | */ |
| 88 | #define TTY_NORMAL 0 |
| 89 | #define TTY_BREAK 1 |
| 90 | #define TTY_FRAME 2 |
| 91 | #define TTY_PARITY 3 |
| 92 | #define TTY_OVERRUN 4 |
| 93 | |
| 94 | #define INTR_CHAR(tty) ((tty)->termios->c_cc[VINTR]) |
| 95 | #define QUIT_CHAR(tty) ((tty)->termios->c_cc[VQUIT]) |
| 96 | #define ERASE_CHAR(tty) ((tty)->termios->c_cc[VERASE]) |
| 97 | #define KILL_CHAR(tty) ((tty)->termios->c_cc[VKILL]) |
| 98 | #define EOF_CHAR(tty) ((tty)->termios->c_cc[VEOF]) |
| 99 | #define TIME_CHAR(tty) ((tty)->termios->c_cc[VTIME]) |
| 100 | #define MIN_CHAR(tty) ((tty)->termios->c_cc[VMIN]) |
| 101 | #define SWTC_CHAR(tty) ((tty)->termios->c_cc[VSWTC]) |
| 102 | #define START_CHAR(tty) ((tty)->termios->c_cc[VSTART]) |
| 103 | #define STOP_CHAR(tty) ((tty)->termios->c_cc[VSTOP]) |
| 104 | #define SUSP_CHAR(tty) ((tty)->termios->c_cc[VSUSP]) |
| 105 | #define EOL_CHAR(tty) ((tty)->termios->c_cc[VEOL]) |
| 106 | #define REPRINT_CHAR(tty) ((tty)->termios->c_cc[VREPRINT]) |
| 107 | #define DISCARD_CHAR(tty) ((tty)->termios->c_cc[VDISCARD]) |
| 108 | #define WERASE_CHAR(tty) ((tty)->termios->c_cc[VWERASE]) |
| 109 | #define LNEXT_CHAR(tty) ((tty)->termios->c_cc[VLNEXT]) |
| 110 | #define EOL2_CHAR(tty) ((tty)->termios->c_cc[VEOL2]) |
| 111 | |
| 112 | #define _I_FLAG(tty,f) ((tty)->termios->c_iflag & (f)) |
| 113 | #define _O_FLAG(tty,f) ((tty)->termios->c_oflag & (f)) |
| 114 | #define _C_FLAG(tty,f) ((tty)->termios->c_cflag & (f)) |
| 115 | #define _L_FLAG(tty,f) ((tty)->termios->c_lflag & (f)) |
| 116 | |
| 117 | #define I_IGNBRK(tty) _I_FLAG((tty),IGNBRK) |
| 118 | #define I_BRKINT(tty) _I_FLAG((tty),BRKINT) |
| 119 | #define I_IGNPAR(tty) _I_FLAG((tty),IGNPAR) |
| 120 | #define I_PARMRK(tty) _I_FLAG((tty),PARMRK) |
| 121 | #define I_INPCK(tty) _I_FLAG((tty),INPCK) |
| 122 | #define I_ISTRIP(tty) _I_FLAG((tty),ISTRIP) |
| 123 | #define I_INLCR(tty) _I_FLAG((tty),INLCR) |
| 124 | #define I_IGNCR(tty) _I_FLAG((tty),IGNCR) |
| 125 | #define I_ICRNL(tty) _I_FLAG((tty),ICRNL) |
| 126 | #define I_IUCLC(tty) _I_FLAG((tty),IUCLC) |
| 127 | #define I_IXON(tty) _I_FLAG((tty),IXON) |
| 128 | #define I_IXANY(tty) _I_FLAG((tty),IXANY) |
| 129 | #define I_IXOFF(tty) _I_FLAG((tty),IXOFF) |
| 130 | #define I_IMAXBEL(tty) _I_FLAG((tty),IMAXBEL) |
| 131 | #define I_IUTF8(tty) _I_FLAG((tty),IUTF8) |
| 132 | |
| 133 | #define O_OPOST(tty) _O_FLAG((tty),OPOST) |
| 134 | #define O_OLCUC(tty) _O_FLAG((tty),OLCUC) |
| 135 | #define O_ONLCR(tty) _O_FLAG((tty),ONLCR) |
| 136 | #define O_OCRNL(tty) _O_FLAG((tty),OCRNL) |
| 137 | #define O_ONOCR(tty) _O_FLAG((tty),ONOCR) |
| 138 | #define O_ONLRET(tty) _O_FLAG((tty),ONLRET) |
| 139 | #define O_OFILL(tty) _O_FLAG((tty),OFILL) |
| 140 | #define O_OFDEL(tty) _O_FLAG((tty),OFDEL) |
| 141 | #define O_NLDLY(tty) _O_FLAG((tty),NLDLY) |
| 142 | #define O_CRDLY(tty) _O_FLAG((tty),CRDLY) |
| 143 | #define O_TABDLY(tty) _O_FLAG((tty),TABDLY) |
| 144 | #define O_BSDLY(tty) _O_FLAG((tty),BSDLY) |
| 145 | #define O_VTDLY(tty) _O_FLAG((tty),VTDLY) |
| 146 | #define O_FFDLY(tty) _O_FLAG((tty),FFDLY) |
| 147 | |
| 148 | #define C_BAUD(tty) _C_FLAG((tty),CBAUD) |
| 149 | #define C_CSIZE(tty) _C_FLAG((tty),CSIZE) |
| 150 | #define C_CSTOPB(tty) _C_FLAG((tty),CSTOPB) |
| 151 | #define C_CREAD(tty) _C_FLAG((tty),CREAD) |
| 152 | #define C_PARENB(tty) _C_FLAG((tty),PARENB) |
| 153 | #define C_PARODD(tty) _C_FLAG((tty),PARODD) |
| 154 | #define C_HUPCL(tty) _C_FLAG((tty),HUPCL) |
| 155 | #define C_CLOCAL(tty) _C_FLAG((tty),CLOCAL) |
| 156 | #define C_CIBAUD(tty) _C_FLAG((tty),CIBAUD) |
| 157 | #define C_CRTSCTS(tty) _C_FLAG((tty),CRTSCTS) |
| 158 | |
| 159 | #define L_ISIG(tty) _L_FLAG((tty),ISIG) |
| 160 | #define L_ICANON(tty) _L_FLAG((tty),ICANON) |
| 161 | #define L_XCASE(tty) _L_FLAG((tty),XCASE) |
| 162 | #define L_ECHO(tty) _L_FLAG((tty),ECHO) |
| 163 | #define L_ECHOE(tty) _L_FLAG((tty),ECHOE) |
| 164 | #define L_ECHOK(tty) _L_FLAG((tty),ECHOK) |
| 165 | #define L_ECHONL(tty) _L_FLAG((tty),ECHONL) |
| 166 | #define L_NOFLSH(tty) _L_FLAG((tty),NOFLSH) |
| 167 | #define L_TOSTOP(tty) _L_FLAG((tty),TOSTOP) |
| 168 | #define L_ECHOCTL(tty) _L_FLAG((tty),ECHOCTL) |
| 169 | #define L_ECHOPRT(tty) _L_FLAG((tty),ECHOPRT) |
| 170 | #define L_ECHOKE(tty) _L_FLAG((tty),ECHOKE) |
| 171 | #define L_FLUSHO(tty) _L_FLAG((tty),FLUSHO) |
| 172 | #define L_PENDIN(tty) _L_FLAG((tty),PENDIN) |
| 173 | #define L_IEXTEN(tty) _L_FLAG((tty),IEXTEN) |
| 174 | |
| 175 | struct device; |
Miloslav Trmac | 522ed77 | 2007-07-15 23:40:56 -0700 | [diff] [blame] | 176 | struct signal_struct; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | /* |
| 178 | * Where all of the state associated with a tty is kept while the tty |
| 179 | * is open. Since the termios state should be kept even if the tty |
| 180 | * has been closed --- for things like the baud rate, etc --- it is |
| 181 | * not stored here, but rather a pointer to the real state is stored |
| 182 | * here. Possible the winsize structure should have the same |
| 183 | * treatment, but (1) the default 80x24 is usually right and (2) it's |
| 184 | * most often used by a windowing system, which will set the correct |
| 185 | * size each time the window is created or resized anyway. |
| 186 | * - TYT, 9/14/92 |
| 187 | */ |
| 188 | struct tty_struct { |
| 189 | int magic; |
| 190 | struct tty_driver *driver; |
| 191 | int index; |
| 192 | struct tty_ldisc ldisc; |
Arjan van de Ven | 5785c95 | 2006-09-29 02:00:43 -0700 | [diff] [blame] | 193 | struct mutex termios_mutex; |
Alan Cox | edc6afc | 2006-12-08 02:38:44 -0800 | [diff] [blame] | 194 | struct ktermios *termios, *termios_locked; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | char name[64]; |
Eric W. Biederman | ab521dc | 2007-02-12 00:53:00 -0800 | [diff] [blame] | 196 | struct pid *pgrp; |
| 197 | struct pid *session; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | unsigned long flags; |
| 199 | int count; |
| 200 | struct winsize winsize; |
| 201 | unsigned char stopped:1, hw_stopped:1, flow_stopped:1, packet:1; |
| 202 | unsigned char low_latency:1, warned:1; |
| 203 | unsigned char ctrl_status; |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 204 | unsigned int receive_room; /* Bytes free for queue */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | |
| 206 | struct tty_struct *link; |
| 207 | struct fasync_struct *fasync; |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 208 | struct tty_bufhead buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | int alt_speed; /* For magic substitution of 38400 bps */ |
| 210 | wait_queue_head_t write_wait; |
| 211 | wait_queue_head_t read_wait; |
| 212 | struct work_struct hangup_work; |
| 213 | void *disc_data; |
| 214 | void *driver_data; |
| 215 | struct list_head tty_files; |
| 216 | |
| 217 | #define N_TTY_BUF_SIZE 4096 |
| 218 | |
| 219 | /* |
| 220 | * The following is data for the N_TTY line discipline. For |
| 221 | * historical reasons, this is included in the tty structure. |
| 222 | */ |
| 223 | unsigned int column; |
| 224 | unsigned char lnext:1, erasing:1, raw:1, real_raw:1, icanon:1; |
| 225 | unsigned char closing:1; |
| 226 | unsigned short minimum_to_wake; |
| 227 | unsigned long overrun_time; |
| 228 | int num_overrun; |
| 229 | unsigned long process_char_map[256/(8*sizeof(unsigned long))]; |
| 230 | char *read_buf; |
| 231 | int read_head; |
| 232 | int read_tail; |
| 233 | int read_cnt; |
| 234 | unsigned long read_flags[N_TTY_BUF_SIZE/(8*sizeof(unsigned long))]; |
| 235 | int canon_data; |
| 236 | unsigned long canon_head; |
| 237 | unsigned int canon_column; |
Ingo Molnar | 70522e1 | 2006-03-23 03:00:31 -0800 | [diff] [blame] | 238 | struct mutex atomic_read_lock; |
| 239 | struct mutex atomic_write_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | unsigned char *write_buf; |
| 241 | int write_cnt; |
| 242 | spinlock_t read_lock; |
| 243 | /* If the tty has a pending do_SAK, queue it here - akpm */ |
| 244 | struct work_struct SAK_work; |
| 245 | }; |
| 246 | |
| 247 | /* tty magic number */ |
| 248 | #define TTY_MAGIC 0x5401 |
| 249 | |
| 250 | /* |
| 251 | * These bits are used in the flags field of the tty structure. |
| 252 | * |
| 253 | * So that interrupts won't be able to mess up the queues, |
| 254 | * copy_to_cooked must be atomic with respect to itself, as must |
| 255 | * tty->write. Thus, you must use the inline functions set_bit() and |
| 256 | * clear_bit() to make things atomic. |
| 257 | */ |
| 258 | #define TTY_THROTTLED 0 /* Call unthrottle() at threshold min */ |
| 259 | #define TTY_IO_ERROR 1 /* Canse an I/O error (may be no ldisc too) */ |
| 260 | #define TTY_OTHER_CLOSED 2 /* Other side (if any) has closed */ |
| 261 | #define TTY_EXCLUSIVE 3 /* Exclusive open mode */ |
| 262 | #define TTY_DEBUG 4 /* Debugging */ |
| 263 | #define TTY_DO_WRITE_WAKEUP 5 /* Call write_wakeup after queuing new */ |
| 264 | #define TTY_PUSH 6 /* n_tty private */ |
| 265 | #define TTY_CLOSING 7 /* ->close() in progress */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | #define TTY_LDISC 9 /* Line discipline attached */ |
| 267 | #define TTY_HW_COOK_OUT 14 /* Hardware can do output cooking */ |
| 268 | #define TTY_HW_COOK_IN 15 /* Hardware can do input cooking */ |
| 269 | #define TTY_PTY_LOCK 16 /* pty private */ |
| 270 | #define TTY_NO_WRITE_SPLIT 17 /* Preserve write boundaries to driver */ |
| 271 | #define TTY_HUPPED 18 /* Post driver->hangup() */ |
Alan Cox | 42fd552 | 2007-08-10 13:01:05 -0700 | [diff] [blame] | 272 | #define TTY_FLUSHING 19 /* Flushing to ldisc in progress */ |
| 273 | #define TTY_FLUSHPENDING 20 /* Queued buffer flush pending */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | |
| 275 | #define TTY_WRITE_FLUSH(tty) tty_write_flush((tty)) |
| 276 | |
| 277 | extern void tty_write_flush(struct tty_struct *); |
| 278 | |
Alan Cox | edc6afc | 2006-12-08 02:38:44 -0800 | [diff] [blame] | 279 | extern struct ktermios tty_std_termios; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | |
| 281 | extern int kmsg_redirect; |
| 282 | |
| 283 | extern void console_init(void); |
| 284 | extern int vcs_init(void); |
| 285 | |
| 286 | extern int tty_paranoia_check(struct tty_struct *tty, struct inode *inode, |
| 287 | const char *routine); |
| 288 | extern char *tty_name(struct tty_struct *tty, char *buf); |
| 289 | extern void tty_wait_until_sent(struct tty_struct * tty, long timeout); |
| 290 | extern int tty_check_change(struct tty_struct * tty); |
| 291 | extern void stop_tty(struct tty_struct * tty); |
| 292 | extern void start_tty(struct tty_struct * tty); |
| 293 | extern int tty_register_ldisc(int disc, struct tty_ldisc *new_ldisc); |
Alexey Dobriyan | bfb0759 | 2005-06-23 00:10:32 -0700 | [diff] [blame] | 294 | extern int tty_unregister_ldisc(int disc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | extern int tty_register_driver(struct tty_driver *driver); |
| 296 | extern int tty_unregister_driver(struct tty_driver *driver); |
Greg Kroah-Hartman | 01107d3 | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 297 | extern struct device *tty_register_device(struct tty_driver *driver, |
| 298 | unsigned index, struct device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | extern void tty_unregister_device(struct tty_driver *driver, unsigned index); |
| 300 | extern int tty_read_raw_data(struct tty_struct *tty, unsigned char *bufp, |
| 301 | int buflen); |
| 302 | extern void tty_write_message(struct tty_struct *tty, char *msg); |
| 303 | |
Eric W. Biederman | 3e7cd6c | 2007-02-12 00:52:58 -0800 | [diff] [blame] | 304 | extern int is_current_pgrp_orphaned(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | extern int is_ignored(int sig); |
| 306 | extern int tty_signal(int sig, struct tty_struct *tty); |
| 307 | extern void tty_hangup(struct tty_struct * tty); |
| 308 | extern void tty_vhangup(struct tty_struct * tty); |
| 309 | extern void tty_unhangup(struct file *filp); |
| 310 | extern int tty_hung_up_p(struct file * filp); |
Miloslav Trmac | 522ed77 | 2007-07-15 23:40:56 -0700 | [diff] [blame] | 311 | extern int is_tty(struct file *filp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | extern void do_SAK(struct tty_struct *tty); |
Eric W. Biederman | 8b6312f | 2007-02-10 01:44:34 -0800 | [diff] [blame] | 313 | extern void __do_SAK(struct tty_struct *tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | extern void disassociate_ctty(int priv); |
Eric W. Biederman | 98a27ba | 2007-05-08 00:26:56 -0700 | [diff] [blame] | 315 | extern void no_tty(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | extern void tty_flip_buffer_push(struct tty_struct *tty); |
Alan Cox | edc6afc | 2006-12-08 02:38:44 -0800 | [diff] [blame] | 317 | extern speed_t tty_get_baud_rate(struct tty_struct *tty); |
| 318 | extern speed_t tty_termios_baud_rate(struct ktermios *termios); |
| 319 | extern speed_t tty_termios_input_baud_rate(struct ktermios *termios); |
Alan Cox | 5f519d7 | 2007-10-16 23:30:07 -0700 | [diff] [blame] | 320 | extern void tty_termios_encode_baud_rate(struct ktermios *termios, speed_t ibaud, speed_t obaud); |
| 321 | extern void tty_encode_baud_rate(struct tty_struct *tty, speed_t ibaud, speed_t obaud); |
| 322 | extern void tty_termios_copy_hw(struct ktermios *new, struct ktermios *old); |
Alan Cox | bf5e583 | 2008-01-08 14:55:51 +0000 | [diff] [blame] | 323 | extern int tty_termios_hw_change(struct ktermios *a, struct ktermios *b); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | |
| 325 | extern struct tty_ldisc *tty_ldisc_ref(struct tty_struct *); |
| 326 | extern void tty_ldisc_deref(struct tty_ldisc *); |
| 327 | extern struct tty_ldisc *tty_ldisc_ref_wait(struct tty_struct *); |
| 328 | |
| 329 | extern struct tty_ldisc *tty_ldisc_get(int); |
| 330 | extern void tty_ldisc_put(int); |
| 331 | |
| 332 | extern void tty_wakeup(struct tty_struct *tty); |
| 333 | extern void tty_ldisc_flush(struct tty_struct *tty); |
| 334 | |
David Howells | 07f3f05 | 2006-09-30 20:52:18 +0200 | [diff] [blame] | 335 | extern int tty_ioctl(struct inode *inode, struct file *file, unsigned int cmd, |
| 336 | unsigned long arg); |
Alan Cox | 0fc00e2 | 2007-11-07 01:24:56 -0800 | [diff] [blame] | 337 | extern int tty_mode_ioctl(struct tty_struct *tty, struct file *file, |
| 338 | unsigned int cmd, unsigned long arg); |
| 339 | extern int tty_perform_flush(struct tty_struct *tty, unsigned long arg); |
Peter Zijlstra | 24ec839 | 2006-12-08 02:36:04 -0800 | [diff] [blame] | 340 | extern dev_t tty_devnum(struct tty_struct *tty); |
| 341 | extern void proc_clear_tty(struct task_struct *p); |
Peter Zijlstra | 24ec839 | 2006-12-08 02:36:04 -0800 | [diff] [blame] | 342 | extern struct tty_struct *get_current_tty(void); |
| 343 | |
Ingo Molnar | 70522e1 | 2006-03-23 03:00:31 -0800 | [diff] [blame] | 344 | extern struct mutex tty_mutex; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | |
Alan Cox | 9c1729d | 2007-07-15 23:39:43 -0700 | [diff] [blame] | 346 | extern void tty_write_unlock(struct tty_struct *tty); |
| 347 | extern int tty_write_lock(struct tty_struct *tty, int ndelay); |
| 348 | #define tty_is_writelocked(tty) (mutex_is_locked(&tty->atomic_write_lock)) |
| 349 | |
| 350 | |
| 351 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | /* n_tty.c */ |
| 353 | extern struct tty_ldisc tty_ldisc_N_TTY; |
| 354 | |
Miloslav Trmac | 522ed77 | 2007-07-15 23:40:56 -0700 | [diff] [blame] | 355 | /* tty_audit.c */ |
| 356 | #ifdef CONFIG_AUDIT |
| 357 | extern void tty_audit_add_data(struct tty_struct *tty, unsigned char *data, |
| 358 | size_t size); |
| 359 | extern void tty_audit_exit(void); |
| 360 | extern void tty_audit_fork(struct signal_struct *sig); |
| 361 | extern void tty_audit_push(struct tty_struct *tty); |
| 362 | extern void tty_audit_push_task(struct task_struct *tsk, uid_t loginuid); |
| 363 | extern void tty_audit_opening(void); |
| 364 | #else |
| 365 | static inline void tty_audit_add_data(struct tty_struct *tty, |
| 366 | unsigned char *data, size_t size) |
| 367 | { |
| 368 | } |
| 369 | static inline void tty_audit_exit(void) |
| 370 | { |
| 371 | } |
| 372 | static inline void tty_audit_fork(struct signal_struct *sig) |
| 373 | { |
| 374 | } |
| 375 | static inline void tty_audit_push(struct tty_struct *tty) |
| 376 | { |
| 377 | } |
| 378 | static inline void tty_audit_push_task(struct task_struct *tsk, uid_t loginuid) |
| 379 | { |
| 380 | } |
| 381 | static inline void tty_audit_opening(void) |
| 382 | { |
| 383 | } |
| 384 | #endif |
| 385 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | /* tty_ioctl.c */ |
| 387 | extern int n_tty_ioctl(struct tty_struct * tty, struct file * file, |
| 388 | unsigned int cmd, unsigned long arg); |
| 389 | |
| 390 | /* serial.c */ |
| 391 | |
| 392 | extern void serial_console_init(void); |
| 393 | |
| 394 | /* pcxx.c */ |
| 395 | |
| 396 | extern int pcxe_open(struct tty_struct *tty, struct file *filp); |
| 397 | |
| 398 | /* printk.c */ |
| 399 | |
| 400 | extern void console_print(const char *); |
| 401 | |
| 402 | /* vt.c */ |
| 403 | |
| 404 | extern int vt_ioctl(struct tty_struct *tty, struct file * file, |
| 405 | unsigned int cmd, unsigned long arg); |
| 406 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | #endif /* __KERNEL__ */ |
| 408 | #endif |