summaryrefslogtreecommitdiff
path: root/sys/compat/linux32/common/linux32_termios.c
blob: 0214dd6aea0a73c4da0e0d033c58458011db8317 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
/*	$NetBSD: linux32_termios.c,v 1.16 2021/11/26 19:28:37 ryo Exp $ */

/*-
 * Copyright (c) 1995-2006, 2008  The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Frank van der Linden, Eric Haszlakiewicz, and Emmanuel Dreyfus.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: linux32_termios.c,v 1.16 2021/11/26 19:28:37 ryo Exp $");

#ifdef _KERNEL_OPT
#include "opt_compat_linux32.h"
#include "opt_ptm.h"
#endif

#include <sys/param.h>
#include <sys/proc.h>
#include <sys/systm.h>
#include <sys/file.h>
#include <sys/filedesc.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <sys/termios.h>
#include <sys/kernel.h>

#include <compat/netbsd32/netbsd32.h>
#include <compat/netbsd32/netbsd32_syscallargs.h>

#include <compat/linux32/common/linux32_types.h>
#include <compat/linux32/common/linux32_signal.h>
#include <compat/linux32/common/linux32_ioctl.h>
#include <compat/linux32/common/linux32_machdep.h>
#include <compat/linux32/common/linux32_termios.h>
#include <compat/linux32/linux32_syscallargs.h>

#include <compat/linux/common/linux_types.h>
#include <compat/linux/common/linux_signal.h>
#include <compat/linux/common/linux_util.h>
#include <compat/linux/common/linux_termios.h>
#include <compat/linux/common/linux_ipc.h>
#include <compat/linux/common/linux_sem.h>

#include <compat/linux/linux_syscallargs.h>

#ifdef DEBUG_LINUX
#define DPRINTF(a)	uprintf a
#else
#define DPRINTF(a)
#endif

int
linux32_ioctl_termios(struct lwp *l, const struct linux32_sys_ioctl_args *uap, register_t *retval)
{
	/* {
		syscallarg(int) fd;
		syscallarg(netbsd32_u_long) com;
		syscallarg(netbsd32_charp) data;
	} */
	file_t *fp;
	u_long com;
	struct linux32_termio tmplt;
	struct linux32_termios tmplts;
	struct termios tmpbts;
	int idat;
	struct netbsd32_ioctl_args ia;
	int error;
	char tioclinux;
	int (*bsdioctl)(file_t *, u_long, void *);

	if ((fp = fd_getfile(SCARG(uap, fd))) == NULL)
		return (EBADF);

	if ((fp->f_flag & (FREAD | FWRITE)) == 0) {
		error = EBADF;
		goto out;
	}

	bsdioctl = fp->f_ops->fo_ioctl;
	com = SCARG(uap, com);
	retval[0] = 0;

	switch (com) {
	case LINUX32_TCGETS:
		error = (*bsdioctl)(fp, TIOCGETA, &tmpbts);
		if (error)
			goto out;
		bsd_termios_to_linux32_termios(&tmpbts, &tmplts);
		error = copyout(&tmplts, SCARG_P32(uap, data), sizeof tmplts);
		goto out;
	case LINUX32_TCSETS:
	case LINUX32_TCSETSW:
	case LINUX32_TCSETSF:
		/*
		 * First fill in all fields, so that we keep the current
		 * values for fields that Linux doesn't know about.
		 */
		error = (*bsdioctl)(fp, TIOCGETA, &tmpbts);
		if (error)
			goto out;
		if ((error = copyin(SCARG_P32(uap, data), 
		    &tmplts, sizeof tmplts)) != 0)
			goto out;
		linux32_termios_to_bsd_termios(&tmplts, &tmpbts);
		switch (com) {
		case LINUX32_TCSETS:
			com = TIOCSETA;
			break;
		case LINUX32_TCSETSW:
			com = TIOCSETAW;
			break;
		case LINUX32_TCSETSF:
			com = TIOCSETAF;
			break;
		}
		error = (*bsdioctl)(fp, com, &tmpbts);
		goto out;
	case LINUX32_TCGETA:
		error = (*bsdioctl)(fp, TIOCGETA, &tmpbts);
		if (error)
			goto out;
		bsd_termios_to_linux32_termio(&tmpbts, &tmplt);
		error = copyout(&tmplt, SCARG_P32(uap, data), sizeof tmplt);
		goto out;
	case LINUX32_TCSETA:
	case LINUX32_TCSETAW:
	case LINUX32_TCSETAF:
		/*
		 * First fill in all fields, so that we keep the current
		 * values for fields that Linux doesn't know about.
		 */
		error = (*bsdioctl)(fp, TIOCGETA, &tmpbts);
		if (error)
			goto out;
		if ((error = copyin(SCARG_P32(uap, data), 
		    &tmplt, sizeof tmplt)) != 0)
			goto out;
		linux32_termio_to_bsd_termios(&tmplt, &tmpbts);
		switch (com) {
		case LINUX32_TCSETA:
			com = TIOCSETA;
			break;
		case LINUX32_TCSETAW:
			com = TIOCSETAW;
			break;
		case LINUX32_TCSETAF:
			com = TIOCSETAF;
			break;
		}
		error = (*bsdioctl)(fp, com, &tmpbts);
		goto out;
	case LINUX32_TCFLSH:
		switch((u_long)SCARG_P32(uap, data)) {
		case 0:
			idat = FREAD;
			break;
		case 1:
			idat = FWRITE;
			break;
		case 2:
			idat = 0;
			break;
		default:
			error = EINVAL;
			goto out;
		}
		error = (*bsdioctl)(fp, TIOCFLUSH, &idat);
		goto out;
	case LINUX32_TIOCGETD:
		error = (*bsdioctl)(fp, TIOCGETD, &idat);
		if (error)
			goto out;
		switch (idat) {
		case TTYDISC:
			idat = LINUX_N_TTY;
			break;
		case SLIPDISC:
			idat = LINUX_N_SLIP;
			break;
		case PPPDISC:
			idat = LINUX_N_PPP;
			break;
		case STRIPDISC:
			idat = LINUX_N_STRIP;
			break;
		/*
		 * Linux does not have the tablet line discipline.
		 */
		case TABLDISC:
		default:
			idat = -1;	/* XXX What should this be? */
			break;
		}
		error = copyout(&idat, SCARG_P32(uap, data), sizeof idat);
		goto out;
	case LINUX32_TIOCSETD:
		if ((error = copyin(SCARG_P32(uap, data), 
		    &idat, sizeof idat)) != 0)
			goto out;
		switch (idat) {
		case LINUX_N_TTY:
			idat = TTYDISC;
			break;
		case LINUX_N_SLIP:
			idat = SLIPDISC;
			break;
		case LINUX_N_PPP:
			idat = PPPDISC;
			break;
		case LINUX_N_STRIP:
			idat = STRIPDISC;
			break;
		/*
		 * We can't handle the mouse line discipline Linux has.
		 */
		case LINUX_N_MOUSE:
		case LINUX_N_AX25:
		case LINUX_N_X25:
		case LINUX_N_6PACK:
		default:
			error = EINVAL;
			goto out;
		}
		error = (*bsdioctl)(fp, TIOCSETD, &idat);
		goto out;
	case LINUX32_TIOCLINUX:
		if ((error = copyin(SCARG_P32(uap, data), 
		    &tioclinux, sizeof tioclinux)) != 0)
			goto out;
		switch (tioclinux) {
		case LINUX_TIOCLINUX_KERNMSG:
			/*
			 * XXX needed to not fail for some things. Could
			 * try to use TIOCCONS, but the char argument
			 * specifies the VT #, not an fd.
			 */
			error = 0;
			goto out;
		case LINUX_TIOCLINUX_COPY:
		case LINUX_TIOCLINUX_PASTE:
		case LINUX_TIOCLINUX_UNBLANK:
		case LINUX_TIOCLINUX_LOADLUT:
		case LINUX_TIOCLINUX_READSHIFT:
		case LINUX_TIOCLINUX_READMOUSE:
		case LINUX_TIOCLINUX_VESABLANK:
		case LINUX_TIOCLINUX_CURCONS:	/* could use VT_GETACTIVE */
		default:
			error = EINVAL;
			goto out;
		}
		break;
	case LINUX32_TIOCGWINSZ:
		SCARG(&ia, com) = TIOCGWINSZ;
		break;
	case LINUX32_TIOCSWINSZ:
		SCARG(&ia, com) = TIOCSWINSZ;
		break;
	case LINUX32_TIOCGPGRP:
		SCARG(&ia, com) = TIOCGPGRP;
		break;
	case LINUX32_TIOCSPGRP:
		SCARG(&ia, com) = TIOCSPGRP;
		break;
	case LINUX32_FIOCLEX:
		SCARG(&ia, com) = FIOCLEX;
		break;
	case LINUX32_FIONCLEX:
		SCARG(&ia, com) = FIONCLEX;
		break;
	case LINUX32_FIONREAD:
		SCARG(&ia, com) = FIONREAD;
		break;
	case LINUX32_FIONBIO:
		SCARG(&ia, com) = FIONBIO;
		break;
	case LINUX32_FIOASYNC:
		SCARG(&ia, com) = FIOASYNC;
		break;
	case LINUX32_TIOCEXCL:
		SCARG(&ia, com) = TIOCEXCL;
		break;
	case LINUX32_TIOCNXCL:
		SCARG(&ia, com) = TIOCNXCL;
		break;
	case LINUX32_TIOCCONS:
		SCARG(&ia, com) = TIOCCONS;
		break;
	case LINUX32_TIOCNOTTY:
		SCARG(&ia, com) = TIOCNOTTY;
		break;
	case LINUX32_TCSBRK:
		idat = (u_long)SCARG_P32(uap, data);
		if (idat != 0)
			SCARG(&ia, com) = TIOCDRAIN;
		else {
			if ((error = (*bsdioctl)(fp, TIOCSBRK, NULL)) != 0)
				goto out;
			error = tsleep(&idat, PZERO | PCATCH, "linux_tcsbrk", hz / 4);
			if (error == EINTR || error == ERESTART) {
				(void)(*bsdioctl)(fp, TIOCCBRK, NULL);
				error = EINTR;
			} else
				error = (*bsdioctl)(fp, TIOCCBRK, NULL);
			goto out;
		}
		break;
	case LINUX32_TIOCMGET:
		SCARG(&ia, com) = TIOCMGET;
		break;
	case LINUX32_TIOCMSET:
		SCARG(&ia, com) = TIOCMSET;
		break;
	case LINUX32_TIOCMBIC:
		SCARG(&ia, com) = TIOCMBIC;
		break;
	case LINUX32_TIOCMBIS:
		SCARG(&ia, com) = TIOCMBIS;
		break;
#ifdef LINUX32_TIOCGPTN
	case LINUX32_TIOCGPTN:
#ifndef NO_DEV_PTM
		{
			struct ptmget ptm;

			error = (*bsdioctl)(fp, TIOCPTSNAME, &ptm);
			if (error != 0)
				goto out;

			error = copyout(&ptm.sfd, SCARG_P32(uap, data),
			    sizeof(ptm.sfd));
			goto out;
		}
#endif /* NO_DEV_PTM */
#endif /* LINUX32_TIOCGPTN */
#ifdef LINUX32_TIOCSPTLCK
	case LINUX32_TIOCSPTLCK:
			fd_putfile(SCARG(uap, fd));
			error = copyin(SCARG_P32(uap, data), &idat, sizeof(idat));
			if (error)
				return error;
			DPRINTF(("TIOCSPTLCK %d\n", idat));
			return 0;
#endif
	case LINUX32_TCXONC:
		idat = (u_long)SCARG_P32(uap, data);
		switch (idat) {
		case LINUX_TCOOFF:
			SCARG(&ia, com) = TIOCSTOP;
			break;
		case LINUX_TCOON:
			SCARG(&ia, com) = TIOCSTART;
			break;
		case LINUX_TCIOFF:
		case LINUX_TCION:
		default:
			error = EINVAL;
			goto out;
		}
		break;
	default:
		error = EINVAL;
		goto out;
	}

	SCARG(&ia, fd) = SCARG(uap, fd);
	SCARG(&ia, data) = SCARG(uap, data);
	error = netbsd32_ioctl(curlwp, &ia, retval);
out:
	fd_putfile(SCARG(uap, fd));
	return error;
}