Commit | Line | Data |
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1da177e4 LT |
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 | ||
1da177e4 | 8 | #ifdef __KERNEL__ |
1da177e4 LT |
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> | |
70522e12 | 15 | #include <linux/mutex.h> |
1da177e4 LT |
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 | */ | |
1da177e4 LT |
24 | #define NR_UNIX98_PTY_DEFAULT 4096 /* Default maximum for Unix98 ptys */ |
25 | #define NR_UNIX98_PTY_MAX (1 << MINORBITS) /* Absolute limit */ | |
348eb12e | 26 | #define NR_LDISCS 19 |
4564f9e5 TS |
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 */ | |
44d1b980 | 39 | #define N_PROFIBUS_FDL 10 /* Reserved for Profibus */ |
4564f9e5 TS |
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 */ | |
cd05acfe | 47 | #define N_SLCAN 17 /* Serial / USB serial CAN Adaptors */ |
348eb12e | 48 | #define N_PPS 18 /* Pulse per Second */ |
1da177e4 | 49 | |
1da177e4 LT |
50 | /* |
51 | * This character is the same as _POSIX_VDISABLE: it cannot be used as | |
52 | * a c_cc[] character, but indicates that a particular special character | |
53 | * isn't in use (eg VINTR has no character etc) | |
54 | */ | |
55 | #define __DISABLED_CHAR '\0' | |
56 | ||
33f0f88f AC |
57 | struct tty_buffer { |
58 | struct tty_buffer *next; | |
59 | char *char_buf_ptr; | |
60 | unsigned char *flag_buf_ptr; | |
61 | int used; | |
62 | int size; | |
8977d929 PF |
63 | int commit; |
64 | int read; | |
33f0f88f AC |
65 | /* Data points here */ |
66 | unsigned long data[0]; | |
67 | }; | |
68 | ||
69 | struct tty_bufhead { | |
52bad64d | 70 | struct delayed_work work; |
808249ce | 71 | spinlock_t lock; |
33f0f88f AC |
72 | struct tty_buffer *head; /* Queue head */ |
73 | struct tty_buffer *tail; /* Active buffer */ | |
74 | struct tty_buffer *free; /* Free queue head */ | |
7a4d29f4 AC |
75 | int memory_used; /* Buffer space used excluding |
76 | free queue */ | |
1da177e4 | 77 | }; |
1da177e4 LT |
78 | /* |
79 | * When a break, frame error, or parity error happens, these codes are | |
80 | * stuffed into the flags buffer. | |
81 | */ | |
82 | #define TTY_NORMAL 0 | |
83 | #define TTY_BREAK 1 | |
84 | #define TTY_FRAME 2 | |
85 | #define TTY_PARITY 3 | |
86 | #define TTY_OVERRUN 4 | |
87 | ||
88 | #define INTR_CHAR(tty) ((tty)->termios->c_cc[VINTR]) | |
89 | #define QUIT_CHAR(tty) ((tty)->termios->c_cc[VQUIT]) | |
90 | #define ERASE_CHAR(tty) ((tty)->termios->c_cc[VERASE]) | |
91 | #define KILL_CHAR(tty) ((tty)->termios->c_cc[VKILL]) | |
92 | #define EOF_CHAR(tty) ((tty)->termios->c_cc[VEOF]) | |
93 | #define TIME_CHAR(tty) ((tty)->termios->c_cc[VTIME]) | |
94 | #define MIN_CHAR(tty) ((tty)->termios->c_cc[VMIN]) | |
95 | #define SWTC_CHAR(tty) ((tty)->termios->c_cc[VSWTC]) | |
96 | #define START_CHAR(tty) ((tty)->termios->c_cc[VSTART]) | |
97 | #define STOP_CHAR(tty) ((tty)->termios->c_cc[VSTOP]) | |
98 | #define SUSP_CHAR(tty) ((tty)->termios->c_cc[VSUSP]) | |
99 | #define EOL_CHAR(tty) ((tty)->termios->c_cc[VEOL]) | |
100 | #define REPRINT_CHAR(tty) ((tty)->termios->c_cc[VREPRINT]) | |
101 | #define DISCARD_CHAR(tty) ((tty)->termios->c_cc[VDISCARD]) | |
102 | #define WERASE_CHAR(tty) ((tty)->termios->c_cc[VWERASE]) | |
103 | #define LNEXT_CHAR(tty) ((tty)->termios->c_cc[VLNEXT]) | |
104 | #define EOL2_CHAR(tty) ((tty)->termios->c_cc[VEOL2]) | |
105 | ||
7a4d29f4 AC |
106 | #define _I_FLAG(tty, f) ((tty)->termios->c_iflag & (f)) |
107 | #define _O_FLAG(tty, f) ((tty)->termios->c_oflag & (f)) | |
108 | #define _C_FLAG(tty, f) ((tty)->termios->c_cflag & (f)) | |
109 | #define _L_FLAG(tty, f) ((tty)->termios->c_lflag & (f)) | |
110 | ||
111 | #define I_IGNBRK(tty) _I_FLAG((tty), IGNBRK) | |
112 | #define I_BRKINT(tty) _I_FLAG((tty), BRKINT) | |
113 | #define I_IGNPAR(tty) _I_FLAG((tty), IGNPAR) | |
114 | #define I_PARMRK(tty) _I_FLAG((tty), PARMRK) | |
115 | #define I_INPCK(tty) _I_FLAG((tty), INPCK) | |
116 | #define I_ISTRIP(tty) _I_FLAG((tty), ISTRIP) | |
117 | #define I_INLCR(tty) _I_FLAG((tty), INLCR) | |
118 | #define I_IGNCR(tty) _I_FLAG((tty), IGNCR) | |
119 | #define I_ICRNL(tty) _I_FLAG((tty), ICRNL) | |
120 | #define I_IUCLC(tty) _I_FLAG((tty), IUCLC) | |
121 | #define I_IXON(tty) _I_FLAG((tty), IXON) | |
122 | #define I_IXANY(tty) _I_FLAG((tty), IXANY) | |
123 | #define I_IXOFF(tty) _I_FLAG((tty), IXOFF) | |
124 | #define I_IMAXBEL(tty) _I_FLAG((tty), IMAXBEL) | |
125 | #define I_IUTF8(tty) _I_FLAG((tty), IUTF8) | |
126 | ||
127 | #define O_OPOST(tty) _O_FLAG((tty), OPOST) | |
128 | #define O_OLCUC(tty) _O_FLAG((tty), OLCUC) | |
129 | #define O_ONLCR(tty) _O_FLAG((tty), ONLCR) | |
130 | #define O_OCRNL(tty) _O_FLAG((tty), OCRNL) | |
131 | #define O_ONOCR(tty) _O_FLAG((tty), ONOCR) | |
132 | #define O_ONLRET(tty) _O_FLAG((tty), ONLRET) | |
133 | #define O_OFILL(tty) _O_FLAG((tty), OFILL) | |
134 | #define O_OFDEL(tty) _O_FLAG((tty), OFDEL) | |
135 | #define O_NLDLY(tty) _O_FLAG((tty), NLDLY) | |
136 | #define O_CRDLY(tty) _O_FLAG((tty), CRDLY) | |
137 | #define O_TABDLY(tty) _O_FLAG((tty), TABDLY) | |
138 | #define O_BSDLY(tty) _O_FLAG((tty), BSDLY) | |
139 | #define O_VTDLY(tty) _O_FLAG((tty), VTDLY) | |
140 | #define O_FFDLY(tty) _O_FLAG((tty), FFDLY) | |
141 | ||
142 | #define C_BAUD(tty) _C_FLAG((tty), CBAUD) | |
143 | #define C_CSIZE(tty) _C_FLAG((tty), CSIZE) | |
144 | #define C_CSTOPB(tty) _C_FLAG((tty), CSTOPB) | |
145 | #define C_CREAD(tty) _C_FLAG((tty), CREAD) | |
146 | #define C_PARENB(tty) _C_FLAG((tty), PARENB) | |
147 | #define C_PARODD(tty) _C_FLAG((tty), PARODD) | |
148 | #define C_HUPCL(tty) _C_FLAG((tty), HUPCL) | |
149 | #define C_CLOCAL(tty) _C_FLAG((tty), CLOCAL) | |
150 | #define C_CIBAUD(tty) _C_FLAG((tty), CIBAUD) | |
151 | #define C_CRTSCTS(tty) _C_FLAG((tty), CRTSCTS) | |
152 | ||
153 | #define L_ISIG(tty) _L_FLAG((tty), ISIG) | |
154 | #define L_ICANON(tty) _L_FLAG((tty), ICANON) | |
155 | #define L_XCASE(tty) _L_FLAG((tty), XCASE) | |
156 | #define L_ECHO(tty) _L_FLAG((tty), ECHO) | |
157 | #define L_ECHOE(tty) _L_FLAG((tty), ECHOE) | |
158 | #define L_ECHOK(tty) _L_FLAG((tty), ECHOK) | |
159 | #define L_ECHONL(tty) _L_FLAG((tty), ECHONL) | |
160 | #define L_NOFLSH(tty) _L_FLAG((tty), NOFLSH) | |
161 | #define L_TOSTOP(tty) _L_FLAG((tty), TOSTOP) | |
162 | #define L_ECHOCTL(tty) _L_FLAG((tty), ECHOCTL) | |
163 | #define L_ECHOPRT(tty) _L_FLAG((tty), ECHOPRT) | |
164 | #define L_ECHOKE(tty) _L_FLAG((tty), ECHOKE) | |
165 | #define L_FLUSHO(tty) _L_FLAG((tty), FLUSHO) | |
166 | #define L_PENDIN(tty) _L_FLAG((tty), PENDIN) | |
167 | #define L_IEXTEN(tty) _L_FLAG((tty), IEXTEN) | |
1da177e4 LT |
168 | |
169 | struct device; | |
522ed776 | 170 | struct signal_struct; |
6f67048c AC |
171 | |
172 | /* | |
173 | * Port level information. Each device keeps its own port level information | |
174 | * so provide a common structure for those ports wanting to use common support | |
175 | * routines. | |
176 | * | |
177 | * The tty port has a different lifetime to the tty so must be kept apart. | |
178 | * In addition be careful as tty -> port mappings are valid for the life | |
179 | * of the tty object but in many cases port -> tty mappings are valid only | |
180 | * until a hangup so don't use the wrong path. | |
181 | */ | |
7a4d29f4 | 182 | |
31f35939 AC |
183 | struct tty_port; |
184 | ||
185 | struct tty_port_operations { | |
186 | /* Return 1 if the carrier is raised */ | |
187 | int (*carrier_raised)(struct tty_port *port); | |
fcc8ac18 | 188 | void (*dtr_rts)(struct tty_port *port, int raise); |
31f35939 AC |
189 | }; |
190 | ||
6f67048c AC |
191 | struct tty_port { |
192 | struct tty_struct *tty; /* Back pointer */ | |
31f35939 | 193 | const struct tty_port_operations *ops; /* Port operations */ |
4a90f09b | 194 | spinlock_t lock; /* Lock protecting tty field */ |
6f67048c AC |
195 | int blocked_open; /* Waiting to open */ |
196 | int count; /* Usage count */ | |
197 | wait_queue_head_t open_wait; /* Open waiters */ | |
198 | wait_queue_head_t close_wait; /* Close waiters */ | |
199 | unsigned long flags; /* TTY flags ASY_*/ | |
200 | struct mutex mutex; /* Locking */ | |
201 | unsigned char *xmit_buf; /* Optional buffer */ | |
44b7d1b3 AC |
202 | int close_delay; /* Close port delay */ |
203 | int closing_wait; /* Delay for output */ | |
1ec739be AC |
204 | int drain_delay; /* Set to zero if no pure time |
205 | based drain is needed else | |
206 | set to size of fifo */ | |
6f67048c AC |
207 | }; |
208 | ||
1da177e4 LT |
209 | /* |
210 | * Where all of the state associated with a tty is kept while the tty | |
211 | * is open. Since the termios state should be kept even if the tty | |
212 | * has been closed --- for things like the baud rate, etc --- it is | |
213 | * not stored here, but rather a pointer to the real state is stored | |
214 | * here. Possible the winsize structure should have the same | |
215 | * treatment, but (1) the default 80x24 is usually right and (2) it's | |
216 | * most often used by a windowing system, which will set the correct | |
217 | * size each time the window is created or resized anyway. | |
218 | * - TYT, 9/14/92 | |
219 | */ | |
f34d7a5b AC |
220 | |
221 | struct tty_operations; | |
222 | ||
1da177e4 LT |
223 | struct tty_struct { |
224 | int magic; | |
9c9f4ded | 225 | struct kref kref; |
1da177e4 | 226 | struct tty_driver *driver; |
f34d7a5b | 227 | const struct tty_operations *ops; |
1da177e4 | 228 | int index; |
c65c9bc3 AC |
229 | |
230 | /* Protects ldisc changes: Lock tty not pty */ | |
231 | struct mutex ldisc_mutex; | |
232 | struct tty_ldisc *ldisc; | |
233 | ||
5785c95b | 234 | struct mutex termios_mutex; |
04f378b1 | 235 | spinlock_t ctrl_lock; |
47f86834 | 236 | /* Termios values are protected by the termios mutex */ |
edc6afc5 | 237 | struct ktermios *termios, *termios_locked; |
1d65b4a0 | 238 | struct termiox *termiox; /* May be NULL for unsupported */ |
1da177e4 | 239 | char name[64]; |
47f86834 | 240 | struct pid *pgrp; /* Protected by ctrl lock */ |
ab521dc0 | 241 | struct pid *session; |
1da177e4 LT |
242 | unsigned long flags; |
243 | int count; | |
47f86834 | 244 | struct winsize winsize; /* termios mutex */ |
1da177e4 LT |
245 | unsigned char stopped:1, hw_stopped:1, flow_stopped:1, packet:1; |
246 | unsigned char low_latency:1, warned:1; | |
47f86834 | 247 | unsigned char ctrl_status; /* ctrl_lock */ |
33f0f88f | 248 | unsigned int receive_room; /* Bytes free for queue */ |
1da177e4 LT |
249 | |
250 | struct tty_struct *link; | |
251 | struct fasync_struct *fasync; | |
47f86834 | 252 | struct tty_bufhead buf; /* Locked internally */ |
1da177e4 LT |
253 | int alt_speed; /* For magic substitution of 38400 bps */ |
254 | wait_queue_head_t write_wait; | |
255 | wait_queue_head_t read_wait; | |
256 | struct work_struct hangup_work; | |
257 | void *disc_data; | |
258 | void *driver_data; | |
259 | struct list_head tty_files; | |
260 | ||
261 | #define N_TTY_BUF_SIZE 4096 | |
6f67048c | 262 | |
1da177e4 LT |
263 | /* |
264 | * The following is data for the N_TTY line discipline. For | |
265 | * historical reasons, this is included in the tty structure. | |
47f86834 | 266 | * Mostly locked by the BKL. |
1da177e4 LT |
267 | */ |
268 | unsigned int column; | |
269 | unsigned char lnext:1, erasing:1, raw:1, real_raw:1, icanon:1; | |
270 | unsigned char closing:1; | |
a88a69c9 | 271 | unsigned char echo_overrun:1; |
1da177e4 LT |
272 | unsigned short minimum_to_wake; |
273 | unsigned long overrun_time; | |
274 | int num_overrun; | |
275 | unsigned long process_char_map[256/(8*sizeof(unsigned long))]; | |
276 | char *read_buf; | |
277 | int read_head; | |
278 | int read_tail; | |
279 | int read_cnt; | |
280 | unsigned long read_flags[N_TTY_BUF_SIZE/(8*sizeof(unsigned long))]; | |
a88a69c9 JP |
281 | unsigned char *echo_buf; |
282 | unsigned int echo_pos; | |
283 | unsigned int echo_cnt; | |
1da177e4 LT |
284 | int canon_data; |
285 | unsigned long canon_head; | |
286 | unsigned int canon_column; | |
70522e12 IM |
287 | struct mutex atomic_read_lock; |
288 | struct mutex atomic_write_lock; | |
a88a69c9 JP |
289 | struct mutex output_lock; |
290 | struct mutex echo_lock; | |
1da177e4 LT |
291 | unsigned char *write_buf; |
292 | int write_cnt; | |
293 | spinlock_t read_lock; | |
294 | /* If the tty has a pending do_SAK, queue it here - akpm */ | |
295 | struct work_struct SAK_work; | |
6f67048c | 296 | struct tty_port *port; |
1da177e4 LT |
297 | }; |
298 | ||
299 | /* tty magic number */ | |
300 | #define TTY_MAGIC 0x5401 | |
301 | ||
302 | /* | |
303 | * These bits are used in the flags field of the tty structure. | |
7a4d29f4 | 304 | * |
1da177e4 LT |
305 | * So that interrupts won't be able to mess up the queues, |
306 | * copy_to_cooked must be atomic with respect to itself, as must | |
307 | * tty->write. Thus, you must use the inline functions set_bit() and | |
308 | * clear_bit() to make things atomic. | |
309 | */ | |
310 | #define TTY_THROTTLED 0 /* Call unthrottle() at threshold min */ | |
7a4d29f4 | 311 | #define TTY_IO_ERROR 1 /* Cause an I/O error (may be no ldisc too) */ |
1da177e4 LT |
312 | #define TTY_OTHER_CLOSED 2 /* Other side (if any) has closed */ |
313 | #define TTY_EXCLUSIVE 3 /* Exclusive open mode */ | |
314 | #define TTY_DEBUG 4 /* Debugging */ | |
315 | #define TTY_DO_WRITE_WAKEUP 5 /* Call write_wakeup after queuing new */ | |
316 | #define TTY_PUSH 6 /* n_tty private */ | |
317 | #define TTY_CLOSING 7 /* ->close() in progress */ | |
1da177e4 | 318 | #define TTY_LDISC 9 /* Line discipline attached */ |
c9b3976e | 319 | #define TTY_LDISC_CHANGING 10 /* Line discipline changing */ |
c65c9bc3 | 320 | #define TTY_LDISC_OPEN 11 /* Line discipline is open */ |
1da177e4 LT |
321 | #define TTY_HW_COOK_OUT 14 /* Hardware can do output cooking */ |
322 | #define TTY_HW_COOK_IN 15 /* Hardware can do input cooking */ | |
323 | #define TTY_PTY_LOCK 16 /* pty private */ | |
324 | #define TTY_NO_WRITE_SPLIT 17 /* Preserve write boundaries to driver */ | |
325 | #define TTY_HUPPED 18 /* Post driver->hangup() */ | |
42fd552e AC |
326 | #define TTY_FLUSHING 19 /* Flushing to ldisc in progress */ |
327 | #define TTY_FLUSHPENDING 20 /* Queued buffer flush pending */ | |
1da177e4 LT |
328 | |
329 | #define TTY_WRITE_FLUSH(tty) tty_write_flush((tty)) | |
330 | ||
331 | extern void tty_write_flush(struct tty_struct *); | |
332 | ||
edc6afc5 | 333 | extern struct ktermios tty_std_termios; |
1da177e4 LT |
334 | |
335 | extern int kmsg_redirect; | |
336 | ||
337 | extern void console_init(void); | |
338 | extern int vcs_init(void); | |
339 | ||
d81ed103 AC |
340 | extern struct class *tty_class; |
341 | ||
9c9f4ded AC |
342 | /** |
343 | * tty_kref_get - get a tty reference | |
344 | * @tty: tty device | |
345 | * | |
346 | * Return a new reference to a tty object. The caller must hold | |
347 | * sufficient locks/counts to ensure that their existing reference cannot | |
348 | * go away | |
349 | */ | |
350 | ||
14bfc987 | 351 | static inline struct tty_struct *tty_kref_get(struct tty_struct *tty) |
9c9f4ded AC |
352 | { |
353 | if (tty) | |
354 | kref_get(&tty->kref); | |
355 | return tty; | |
356 | } | |
357 | extern void tty_kref_put(struct tty_struct *tty); | |
358 | ||
1da177e4 LT |
359 | extern int tty_paranoia_check(struct tty_struct *tty, struct inode *inode, |
360 | const char *routine); | |
361 | extern char *tty_name(struct tty_struct *tty, char *buf); | |
7a4d29f4 AC |
362 | extern void tty_wait_until_sent(struct tty_struct *tty, long timeout); |
363 | extern int tty_check_change(struct tty_struct *tty); | |
364 | extern void stop_tty(struct tty_struct *tty); | |
365 | extern void start_tty(struct tty_struct *tty); | |
1da177e4 LT |
366 | extern int tty_register_driver(struct tty_driver *driver); |
367 | extern int tty_unregister_driver(struct tty_driver *driver); | |
01107d34 GKH |
368 | extern struct device *tty_register_device(struct tty_driver *driver, |
369 | unsigned index, struct device *dev); | |
1da177e4 LT |
370 | extern void tty_unregister_device(struct tty_driver *driver, unsigned index); |
371 | extern int tty_read_raw_data(struct tty_struct *tty, unsigned char *bufp, | |
372 | int buflen); | |
373 | extern void tty_write_message(struct tty_struct *tty, char *msg); | |
f34d7a5b AC |
374 | extern int tty_put_char(struct tty_struct *tty, unsigned char c); |
375 | extern int tty_chars_in_buffer(struct tty_struct *tty); | |
376 | extern int tty_write_room(struct tty_struct *tty); | |
377 | extern void tty_driver_flush_buffer(struct tty_struct *tty); | |
39c2e60f AC |
378 | extern void tty_throttle(struct tty_struct *tty); |
379 | extern void tty_unthrottle(struct tty_struct *tty); | |
fc6f6238 | 380 | extern int tty_do_resize(struct tty_struct *tty, struct winsize *ws); |
feebed65 AC |
381 | extern void tty_shutdown(struct tty_struct *tty); |
382 | extern void tty_free_termios(struct tty_struct *tty); | |
3e7cd6c4 | 383 | extern int is_current_pgrp_orphaned(void); |
5d0fdf1e | 384 | extern struct pid *tty_get_pgrp(struct tty_struct *tty); |
1da177e4 LT |
385 | extern int is_ignored(int sig); |
386 | extern int tty_signal(int sig, struct tty_struct *tty); | |
7a4d29f4 AC |
387 | extern void tty_hangup(struct tty_struct *tty); |
388 | extern void tty_vhangup(struct tty_struct *tty); | |
2cb5998b | 389 | extern void tty_vhangup_self(void); |
1da177e4 | 390 | extern void tty_unhangup(struct file *filp); |
7a4d29f4 | 391 | extern int tty_hung_up_p(struct file *filp); |
1da177e4 | 392 | extern void do_SAK(struct tty_struct *tty); |
8b6312f4 | 393 | extern void __do_SAK(struct tty_struct *tty); |
1da177e4 | 394 | extern void disassociate_ctty(int priv); |
98a27ba4 | 395 | extern void no_tty(void); |
1da177e4 | 396 | extern void tty_flip_buffer_push(struct tty_struct *tty); |
e0495736 AC |
397 | extern void tty_buffer_free_all(struct tty_struct *tty); |
398 | extern void tty_buffer_flush(struct tty_struct *tty); | |
399 | extern void tty_buffer_init(struct tty_struct *tty); | |
edc6afc5 AC |
400 | extern speed_t tty_get_baud_rate(struct tty_struct *tty); |
401 | extern speed_t tty_termios_baud_rate(struct ktermios *termios); | |
402 | extern speed_t tty_termios_input_baud_rate(struct ktermios *termios); | |
7a4d29f4 AC |
403 | extern void tty_termios_encode_baud_rate(struct ktermios *termios, |
404 | speed_t ibaud, speed_t obaud); | |
405 | extern void tty_encode_baud_rate(struct tty_struct *tty, | |
406 | speed_t ibaud, speed_t obaud); | |
5f519d72 | 407 | extern void tty_termios_copy_hw(struct ktermios *new, struct ktermios *old); |
bf5e5834 | 408 | extern int tty_termios_hw_change(struct ktermios *a, struct ktermios *b); |
1da177e4 LT |
409 | |
410 | extern struct tty_ldisc *tty_ldisc_ref(struct tty_struct *); | |
411 | extern void tty_ldisc_deref(struct tty_ldisc *); | |
412 | extern struct tty_ldisc *tty_ldisc_ref_wait(struct tty_struct *); | |
c65c9bc3 | 413 | extern void tty_ldisc_hangup(struct tty_struct *tty); |
a352def2 | 414 | extern const struct file_operations tty_ldiscs_proc_fops; |
1da177e4 LT |
415 | |
416 | extern void tty_wakeup(struct tty_struct *tty); | |
417 | extern void tty_ldisc_flush(struct tty_struct *tty); | |
418 | ||
04f378b1 | 419 | extern long tty_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
0fc00e24 AC |
420 | extern int tty_mode_ioctl(struct tty_struct *tty, struct file *file, |
421 | unsigned int cmd, unsigned long arg); | |
422 | extern int tty_perform_flush(struct tty_struct *tty, unsigned long arg); | |
24ec839c PZ |
423 | extern dev_t tty_devnum(struct tty_struct *tty); |
424 | extern void proc_clear_tty(struct task_struct *p); | |
24ec839c | 425 | extern struct tty_struct *get_current_tty(void); |
d81ed103 | 426 | extern void tty_default_fops(struct file_operations *fops); |
bf970ee4 AC |
427 | extern struct tty_struct *alloc_tty_struct(void); |
428 | extern void free_tty_struct(struct tty_struct *tty); | |
429 | extern void initialize_tty_struct(struct tty_struct *tty, | |
430 | struct tty_driver *driver, int idx); | |
73ec06fc AC |
431 | extern struct tty_struct *tty_init_dev(struct tty_driver *driver, int idx, |
432 | int first_ok); | |
d81ed103 | 433 | extern void tty_release_dev(struct file *filp); |
bf970ee4 | 434 | extern int tty_init_termios(struct tty_struct *tty); |
24ec839c | 435 | |
e8b70e7d AC |
436 | extern struct tty_struct *tty_pair_get_tty(struct tty_struct *tty); |
437 | extern struct tty_struct *tty_pair_get_pty(struct tty_struct *tty); | |
438 | ||
70522e12 | 439 | extern struct mutex tty_mutex; |
1da177e4 | 440 | |
9c1729db AC |
441 | extern void tty_write_unlock(struct tty_struct *tty); |
442 | extern int tty_write_lock(struct tty_struct *tty, int ndelay); | |
443 | #define tty_is_writelocked(tty) (mutex_is_locked(&tty->atomic_write_lock)) | |
444 | ||
6f67048c AC |
445 | extern void tty_port_init(struct tty_port *port); |
446 | extern int tty_port_alloc_xmit_buf(struct tty_port *port); | |
447 | extern void tty_port_free_xmit_buf(struct tty_port *port); | |
4a90f09b AC |
448 | extern struct tty_struct *tty_port_tty_get(struct tty_port *port); |
449 | extern void tty_port_tty_set(struct tty_port *port, struct tty_struct *tty); | |
31f35939 | 450 | extern int tty_port_carrier_raised(struct tty_port *port); |
5d951fb4 | 451 | extern void tty_port_raise_dtr_rts(struct tty_port *port); |
fcc8ac18 | 452 | extern void tty_port_lower_dtr_rts(struct tty_port *port); |
3e61696b | 453 | extern void tty_port_hangup(struct tty_port *port); |
36c621d8 AC |
454 | extern int tty_port_block_til_ready(struct tty_port *port, |
455 | struct tty_struct *tty, struct file *filp); | |
a6614999 AC |
456 | extern int tty_port_close_start(struct tty_port *port, |
457 | struct tty_struct *tty, struct file *filp); | |
458 | extern void tty_port_close_end(struct tty_port *port, struct tty_struct *tty); | |
6f67048c | 459 | |
01e1abb2 AC |
460 | extern int tty_register_ldisc(int disc, struct tty_ldisc_ops *new_ldisc); |
461 | extern int tty_unregister_ldisc(int disc); | |
462 | extern int tty_set_ldisc(struct tty_struct *tty, int ldisc); | |
463 | extern int tty_ldisc_setup(struct tty_struct *tty, struct tty_struct *o_tty); | |
464 | extern void tty_ldisc_release(struct tty_struct *tty, struct tty_struct *o_tty); | |
465 | extern void tty_ldisc_init(struct tty_struct *tty); | |
466 | extern void tty_ldisc_begin(void); | |
467 | /* This last one is just for the tty layer internals and shouldn't be used elsewhere */ | |
468 | extern void tty_ldisc_enable(struct tty_struct *tty); | |
9c1729db AC |
469 | |
470 | ||
1da177e4 | 471 | /* n_tty.c */ |
a352def2 | 472 | extern struct tty_ldisc_ops tty_ldisc_N_TTY; |
1da177e4 | 473 | |
522ed776 MT |
474 | /* tty_audit.c */ |
475 | #ifdef CONFIG_AUDIT | |
476 | extern void tty_audit_add_data(struct tty_struct *tty, unsigned char *data, | |
477 | size_t size); | |
478 | extern void tty_audit_exit(void); | |
479 | extern void tty_audit_fork(struct signal_struct *sig); | |
1e641743 | 480 | extern void tty_audit_tiocsti(struct tty_struct *tty, char ch); |
522ed776 | 481 | extern void tty_audit_push(struct tty_struct *tty); |
7a4d29f4 AC |
482 | extern void tty_audit_push_task(struct task_struct *tsk, |
483 | uid_t loginuid, u32 sessionid); | |
522ed776 MT |
484 | #else |
485 | static inline void tty_audit_add_data(struct tty_struct *tty, | |
486 | unsigned char *data, size_t size) | |
487 | { | |
488 | } | |
1e641743 AV |
489 | static inline void tty_audit_tiocsti(struct tty_struct *tty, char ch) |
490 | { | |
491 | } | |
522ed776 MT |
492 | static inline void tty_audit_exit(void) |
493 | { | |
494 | } | |
495 | static inline void tty_audit_fork(struct signal_struct *sig) | |
496 | { | |
497 | } | |
498 | static inline void tty_audit_push(struct tty_struct *tty) | |
499 | { | |
500 | } | |
7a4d29f4 AC |
501 | static inline void tty_audit_push_task(struct task_struct *tsk, |
502 | uid_t loginuid, u32 sessionid) | |
522ed776 MT |
503 | { |
504 | } | |
522ed776 MT |
505 | #endif |
506 | ||
1da177e4 | 507 | /* tty_ioctl.c */ |
47afa7a5 | 508 | extern int n_tty_ioctl_helper(struct tty_struct *tty, struct file *file, |
1da177e4 LT |
509 | unsigned int cmd, unsigned long arg); |
510 | ||
511 | /* serial.c */ | |
512 | ||
513 | extern void serial_console_init(void); | |
7a4d29f4 | 514 | |
1da177e4 LT |
515 | /* pcxx.c */ |
516 | ||
517 | extern int pcxe_open(struct tty_struct *tty, struct file *filp); | |
518 | ||
519 | /* printk.c */ | |
520 | ||
521 | extern void console_print(const char *); | |
522 | ||
523 | /* vt.c */ | |
524 | ||
7a4d29f4 | 525 | extern int vt_ioctl(struct tty_struct *tty, struct file *file, |
1da177e4 LT |
526 | unsigned int cmd, unsigned long arg); |
527 | ||
1da177e4 LT |
528 | #endif /* __KERNEL__ */ |
529 | #endif |