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Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.4 by pcg, Tue Dec 2 21:49:46 2003 UTC vs.
Revision 1.26 by root, Mon Jan 2 15:10:18 2006 UTC

1/*--------------------------------*-C-*---------------------------------* 1/*--------------------------------*-C-*---------------------------------*
2 * File: ptytty.c 2 * File: ptytty.C
3 *----------------------------------------------------------------------* 3 *----------------------------------------------------------------------*
4 * $Id: ptytty.C,v 1.4 2003/12/02 21:49:46 pcg Exp $
5 * 4 *
6 * All portions of code are copyright by their respective author/s. 5 * All portions of code are copyright by their respective author/s.
7 * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com> 6 * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com>
7 * Copyright (c) 2004 Marc Lehmann <pcg@goof.com>
8 * 8 *
9 * This program is free software; you can redistribute it and/or modify 9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by 10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or 11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version. 12 * (at your option) any later version.
… …
20 * along with this program; if not, write to the Free Software 20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 *---------------------------------------------------------------------*/ 22 *---------------------------------------------------------------------*/
23 23
24#include "../config.h" /* NECESSARY */ 24#include "../config.h" /* NECESSARY */
25#include "rxvt.h"
25 26
26/*
27 * Try to be self-contained except for the above autoconfig'd defines
28 */
29
30#include <stdio.h>
31#ifdef HAVE_STDLIB_H 27#ifdef HAVE_STDLIB_H
32# include <stdlib.h> 28# include <cstdlib>
33#endif 29#endif
34#ifdef HAVE_SYS_TYPES_H 30#ifdef HAVE_SYS_TYPES_H
35# include <sys/types.h> 31# include <sys/types.h>
36#endif 32#endif
37#ifdef HAVE_UNISTD_H 33#ifdef HAVE_UNISTD_H
38# include <unistd.h> 34# include <unistd.h>
39#endif 35#endif
40#if defined(HAVE_STRING_H) 36#if defined(HAVE_STRING_H)
41# include <string.h> 37# include <cstring>
42#endif 38#endif
43#ifdef HAVE_FCNTL_H 39#ifdef HAVE_FCNTL_H
44# include <fcntl.h> 40# include <fcntl.h>
45#endif 41#endif
46#ifdef HAVE_SYS_IOCTL_H 42#ifdef HAVE_SYS_IOCTL_H
47# include <sys/ioctl.h> 43# include <sys/ioctl.h>
48#endif 44#endif
49#if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__) 45#if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H)
50# include <sys/stropts.h> /* for I_PUSH */ 46# include <sys/stropts.h> /* for I_PUSH */
51#endif 47#endif
52 48#ifdef HAVE_ISASTREAM
53#ifdef DEBUG_TTY 49# include <stropts.h>
54# define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr)
55#else
56# define D_TTY(x)
57#endif 50#endif
51#ifdef HAVE_PTY_H
52# include <pty.h>
53#endif
54
55// better do this via configure, but....
56#if defined(__FreeBSD__)
57# include <libutil.h>
58#elif defined(__DARWIN__) || (defined (__MACH__) && defined (__APPLE__))
59# include <util.h>
60#endif
61
62#include <cstdio>
63#include <grp.h>
58 64
59/* ------------------------------------------------------------------------- * 65/* ------------------------------------------------------------------------- *
60 * GET PSEUDO TELETYPE - MASTER AND SLAVE * 66 * GET PSEUDO TELETYPE - MASTER AND SLAVE *
61 * ------------------------------------------------------------------------- */ 67 * ------------------------------------------------------------------------- */
62/* 68/*
63 * Returns pty file descriptor, or -1 on failure 69 * Returns pty file descriptor, or -1 on failure
64 * If successful, ttydev is set to the name of the slave device. 70 * If successful, ttydev is set to the name of the slave device.
65 * fd_tty _may_ also be set to an open fd to the slave device 71 * fd_tty _may_ also be set to an open fd to the slave device
66 */ 72 */
67/* EXTPROTO */ 73static int
68int
69rxvt_get_pty(int *fd_tty, const char **ttydev) 74get_pty (int *fd_tty, char **ttydev)
70{ 75{
71 int pfd; 76 int pfd;
72 77
73#ifdef PTYS_ARE_OPENPTY 78#ifdef PTYS_ARE_OPENPTY
74
75 char tty_name[sizeof "/dev/pts/????\0"]; 79 char tty_name[sizeof "/dev/pts/????\0"];
76 80
77 if (openpty(&pfd, fd_tty, tty_name, NULL, NULL) != -1) 81 if (openpty (&pfd, fd_tty, tty_name, NULL, NULL) != -1)
78 { 82 {
79 *ttydev = strdup(tty_name); 83 *ttydev = strdup (tty_name);
80 return pfd; 84 return pfd;
81 } 85 }
82#endif 86#endif
83 87
84#ifdef PTYS_ARE__GETPTY 88#ifdef PTYS_ARE__GETPTY
85 *ttydev = _getpty(&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); 89 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
86 if (*ttydev != NULL) 90 if (*ttydev != NULL)
87 return pfd; 91 return pfd;
88#endif 92#endif
89 93
90#ifdef PTYS_ARE_GETPTY 94#ifdef PTYS_ARE_GETPTY
91
92 char *ptydev; 95 char *ptydev;
93 96
94 while ((ptydev = getpty()) != NULL) 97 while ((ptydev = getpty ()) != NULL)
95 if ((pfd = open(ptydev, O_RDWR | O_NOCTTY, 0)) >= 0) 98 if ((pfd = open (ptydev, O_RDWR | O_NOCTTY, 0)) >= 0)
96 { 99 {
97 *ttydev = ptydev; 100 *ttydev = ptydev;
98 return pfd; 101 return pfd;
99 } 102 }
100#endif 103#endif
… …
102#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) 105#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
103# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX) 106# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX)
104 107
105 { 108 {
106# ifdef PTYS_ARE_GETPT 109# ifdef PTYS_ARE_GETPT
107 pfd = getpt(); 110 pfd = getpt ();
108# else 111# else
109
110 pfd = open("/dev/ptmx", O_RDWR | O_NOCTTY, 0); 112 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
111# endif 113# endif
112 114
113 if (pfd >= 0) 115 if (pfd >= 0)
114 { 116 {
115 if (grantpt(pfd) == 0 /* change slave permissions */ 117 if (grantpt (pfd) == 0 /* change slave permissions */
116 && unlockpt(pfd) == 0) 118 && unlockpt (pfd) == 0)
117 { /* slave now unlocked */ 119 { /* slave now unlocked */
118 *ttydev = ptsname(pfd); /* get slave's name */ 120 *ttydev = strdup (ptsname (pfd)); /* get slave's name */
119 return pfd; 121 return pfd;
120 } 122 }
121 close(pfd); 123 close (pfd);
122 } 124 }
123 } 125 }
124# endif 126# endif
125#endif 127#endif
126 128
127#ifdef PTYS_ARE_PTC 129#ifdef PTYS_ARE_PTC
128 if ((pfd = open("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 130 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
129 { 131 {
130 *ttydev = ttyname(pfd); 132 *ttydev = strdup (ttyname (pfd));
131 return pfd; 133 return pfd;
132 } 134 }
133#endif 135#endif
134 136
135#ifdef PTYS_ARE_CLONE 137#ifdef PTYS_ARE_CLONE
136 if ((pfd = open("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) 138 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
137 { 139 {
138 *ttydev = ptsname(pfd); 140 *ttydev = strdup (ptsname (pfd));
139 return pfd; 141 return pfd;
140 } 142 }
141#endif 143#endif
142 144
143#ifdef PTYS_ARE_NUMERIC 145#ifdef PTYS_ARE_NUMERIC
144 { 146 {
145 int idx; 147 int idx;
146 char *c1, *c2; 148 char *c1, *c2;
147 char pty_name[] = "/dev/ptyp???"; 149 char pty_name[] = "/dev/ptyp???";
148 char tty_name[] = "/dev/ttyp???"; 150 char tty_name[] = "/dev/ttyp???";
149 151
150 c1 = &(pty_name[sizeof(pty_name) - 4]); 152 c1 = &(pty_name[sizeof (pty_name) - 4]);
151 c2 = &(tty_name[sizeof(tty_name) - 4]); 153 c2 = &(tty_name[sizeof (tty_name) - 4]);
152 for (idx = 0; idx < 256; idx++) 154 for (idx = 0; idx < 256; idx++)
153 { 155 {
154 sprintf(c1, "%d", idx); 156 sprintf (c1, "%d", idx);
155 sprintf(c2, "%d", idx); 157 sprintf (c2, "%d", idx);
156 if (access(tty_name, F_OK) < 0) 158 if (access (tty_name, F_OK) < 0)
157 { 159 {
158 idx = 256; 160 idx = 256;
159 break; 161 break;
160 } 162 }
163
161 if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 164 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
162 { 165 {
163 if (access(tty_name, R_OK | W_OK) == 0) 166 if (access (tty_name, R_OK | W_OK) == 0)
164 { 167 {
165 *ttydev = strdup(tty_name); 168 *ttydev = strdup (tty_name);
166 return pfd; 169 return pfd;
167 } 170 }
171
168 close(pfd); 172 close (pfd);
169 } 173 }
170 } 174 }
171 } 175 }
172#endif 176#endif
177
173#ifdef PTYS_ARE_SEARCHED 178#ifdef PTYS_ARE_SEARCHED
174 { 179 {
175 const char *c1, *c2; 180 const char *c1, *c2;
176 char pty_name[] = "/dev/pty??"; 181 char pty_name[] = "/dev/pty??";
177 char tty_name[] = "/dev/tty??"; 182 char tty_name[] = "/dev/tty??";
178 183
179# ifndef PTYCHAR1 184# ifndef PTYCHAR1
180# define PTYCHAR1 "pqrstuvwxyz" 185# define PTYCHAR1 "pqrstuvwxyz"
181# endif 186# endif
182# ifndef PTYCHAR2 187# ifndef PTYCHAR2
183# define PTYCHAR2 "0123456789abcdef" 188# define PTYCHAR2 "0123456789abcdef"
184# endif 189# endif
185 190
186 for (c1 = PTYCHAR1; *c1; c1++) 191 for (c1 = PTYCHAR1; *c1; c1++)
187 { 192 {
188 pty_name[(sizeof(pty_name) - 3)] = 193 pty_name[ (sizeof (pty_name) - 3)] =
189 tty_name[(sizeof(pty_name) - 3)] = *c1; 194 tty_name[ (sizeof (pty_name) - 3)] = *c1;
190 for (c2 = PTYCHAR2; *c2; c2++) 195 for (c2 = PTYCHAR2; *c2; c2++)
191 { 196 {
192 pty_name[(sizeof(pty_name) - 2)] = 197 pty_name[ (sizeof (pty_name) - 2)] =
193 tty_name[(sizeof(pty_name) - 2)] = *c2; 198 tty_name[ (sizeof (pty_name) - 2)] = *c2;
194 if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 199 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
195 { 200 {
196 if (access(tty_name, R_OK | W_OK) == 0) 201 if (access (tty_name, R_OK | W_OK) == 0)
197 { 202 {
198 *ttydev = strdup(tty_name); 203 *ttydev = strdup (tty_name);
199 return pfd; 204 return pfd;
200 } 205 }
206
201 close(pfd); 207 close (pfd);
202 } 208 }
203 } 209 }
204 } 210 }
205 } 211 }
206#endif 212#endif
213
207 return -1; 214 return -1;
208} 215}
209 216
210/*----------------------------------------------------------------------*/ 217/*----------------------------------------------------------------------*/
211/* 218/*
212 * Returns tty file descriptor, or -1 on failure 219 * Returns tty file descriptor, or -1 on failure
213 */ 220 */
214/* EXTPROTO */ 221static int
215int
216rxvt_get_tty (const char *ttydev) 222get_tty (char *ttydev)
217{ 223{
218 return open (ttydev, O_RDWR | O_NOCTTY, 0); 224 return open (ttydev, O_RDWR | O_NOCTTY, 0);
219} 225}
220 226
221/*----------------------------------------------------------------------*/ 227/*----------------------------------------------------------------------*/
222/* 228/*
223 * Make our tty a controlling tty so that /dev/tty points to us 229 * Make our tty a controlling tty so that /dev/tty points to us
224 */ 230 */
225/* EXTPROTO */ 231static int
226int
227rxvt_control_tty (int fd_tty, const char *ttydev) 232control_tty (int fd_tty, const char *ttydev)
228{ 233{
229#ifndef __QNX__ 234#ifndef __QNX__
230 int fd; 235 int fd;
231 236
232 D_TTY ((stderr, "rxvt_control_tty(): pid: %d, tty fd: %d, dev: %s", getpid(), fd_tty, ttydev));
233 /* ---------------------------------------- */ 237 /* ---------------------------------------- */
234# ifdef HAVE_SETSID 238# ifdef HAVE_SETSID
235 setsid (); 239 setsid ();
236# endif 240# endif
237# if defined(HAVE_SETPGID) 241# if defined(HAVE_SETPGID)
238 setpgid (0, 0); 242 setpgid (0, 0);
239# elif defined(HAVE_SETPGRP) 243# elif defined(HAVE_SETPGRP)
240 setpgrp (0, 0); 244 setpgrp (0, 0);
241# endif 245# endif
246
242 /* ---------------------------------------- */ 247 /* ---------------------------------------- */
243# ifdef TIOCNOTTY 248# ifdef TIOCNOTTY
244
245 fd = open ("/dev/tty", O_RDWR | O_NOCTTY); 249 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
246 D_TTY ((stderr, "rxvt_control_tty(): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes"));
247 if (fd >= 0) 250 if (fd >= 0)
248 { 251 {
249 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */ 252 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */
250 close (fd); 253 close (fd);
251 } 254 }
252# endif 255# endif
256
253 /* ---------------------------------------- */ 257 /* ---------------------------------------- */
254 fd = open ("/dev/tty", O_RDWR | O_NOCTTY); 258 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
255 D_TTY ((stderr, "rxvt_control_tty(): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)"));
256 if (fd >= 0) 259 if (fd >= 0)
257 close (fd); /* ouch: still have controlling tty */ 260 close (fd); /* ouch: still have controlling tty */
261
258 /* ---------------------------------------- */ 262 /* ---------------------------------------- */
259#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 263#if defined(PTYS_ARE_PTMX) && defined(I_PUSH)
260 /* 264 /*
261 * Push STREAMS modules: 265 * Push STREAMS modules:
262 * ptem: pseudo-terminal hardware emulation module. 266 * ptem: pseudo-terminal hardware emulation module.
263 * ldterm: standard terminal line discipline. 267 * ldterm: standard terminal line discipline.
264 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. 268 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
265 * 269 *
266 * After we push the STREAMS modules, the first open() on the slave side 270 * After we push the STREAMS modules, the first open () on the slave side
267 * (i.e. the next section between the dashes giving us "tty opened OK") 271 * (i.e. the next section between the dashes giving us "tty opened OK")
268 * should make the "ptem" (or "ldterm" depending upon either which OS 272 * should make the "ptem" (or "ldterm" depending upon either which OS
269 * version or which set of manual pages you have) module give us a 273 * version or which set of manual pages you have) module give us a
270 * controlling terminal. We must already have close()d the master side 274 * controlling terminal. We must already have close ()d the master side
271 * fd in this child process before we push STREAMS modules on because the 275 * fd in this child process before we push STREAMS modules on because the
272 * documentation is really unclear about whether it is any close() on 276 * documentation is really unclear about whether it is any close () on
273 * the master side or the last close() - i.e. a proper STREAMS dismantling 277 * the master side or the last close () - i.e. a proper STREAMS dismantling
274 * close() - on the master side which causes a hang up to be sent 278 * close () - on the master side which causes a hang up to be sent
275 * through - Geoff Wing 279 * through - Geoff Wing
276 */ 280 */
277# ifdef HAVE_ISASTREAM 281# ifdef HAVE_ISASTREAM
278 if (isastream (fd_tty) == 1) 282 if (isastream (fd_tty) == 1)
279# endif 283# endif
280 { 284 {
281 D_TTY ((stderr, "rxvt_control_tty(): Pushing STREAMS modules"));
282 ioctl (fd_tty, I_PUSH, "ptem"); 285 ioctl (fd_tty, I_PUSH, "ptem");
283 ioctl (fd_tty, I_PUSH, "ldterm"); 286 ioctl (fd_tty, I_PUSH, "ldterm");
284 ioctl (fd_tty, I_PUSH, "ttcompat"); 287 ioctl (fd_tty, I_PUSH, "ttcompat");
285 } 288 }
286#endif 289#endif
287 /* ---------------------------------------- */ 290 /* ---------------------------------------- */
288# if defined(TIOCSCTTY) 291# if defined(TIOCSCTTY)
289 fd = ioctl (fd_tty, TIOCSCTTY, NULL); 292 fd = ioctl (fd_tty, TIOCSCTTY, NULL);
290 D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSCTTY): %d", fd));
291# elif defined(TIOCSETCTTY) 293# elif defined(TIOCSETCTTY)
292 fd = ioctl (fd_tty, TIOCSETCTTY, NULL); 294 fd = ioctl (fd_tty, TIOCSETCTTY, NULL);
293 D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSETCTTY): %d", fd));
294# else 295# else
295 fd = open (ttydev, O_RDWR); 296 fd = open (ttydev, O_RDWR);
296 D_TTY ((stderr, "rxvt_control_tty(): tty open%s", fd < 0 ? " failure" : "ed OK"));
297 if (fd >= 0) 297 if (fd >= 0)
298 close(fd); 298 close (fd);
299# endif 299# endif
300 /* ---------------------------------------- */ 300 /* ---------------------------------------- */
301 fd = open ("/dev/tty", O_WRONLY); 301 fd = open ("/dev/tty", O_WRONLY);
302 D_TTY ((stderr, "rxvt_control_tty(): do we have controlling tty now: %s", fd < 0 ? "no (fatal)" : "yes (good)"));
303 if (fd < 0) 302 if (fd < 0)
304 return -1; /* fatal */ 303 return -1; /* fatal */
305 close (fd); 304 close (fd);
306 /* ---------------------------------------- */ 305 /* ---------------------------------------- */
307 D_TTY ((stderr, "rxvt_control_tty(): tcgetpgrp(): %d getpgrp(): %d", tcgetpgrp(fd_tty), getpgrp()));
308 /* ---------------------------------------- */
309#endif /* ! __QNX__ */ 306#endif /* ! __QNX__ */
310 307
311 return 0; 308 return 0;
312} 309}
310
311#ifndef NO_SETOWNER_TTYDEV
312static struct ttyconf {
313 gid_t gid;
314 mode_t mode;
315
316 ttyconf ()
317 {
318#ifdef TTY_GID_SUPPORT
319 struct group *gr = getgrnam ("tty");
320
321 if (gr)
322 { /* change group ownership of tty to "tty" */
323 mode = S_IRUSR | S_IWUSR | S_IWGRP;
324 gid = gr->gr_gid;
325 }
326 else
327#endif /* TTY_GID_SUPPORT */
328 {
329 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH;
330 gid = getgid ();
331 }
332 }
333} ttyconf;
334
335void
336rxvt_ptytty::privileges (rxvt_privaction action)
337{
338 if (!name || !*name)
339 return;
340
341 rxvt_privileges (RESTORE);
342
343 if (action == SAVE)
344 {
345# ifndef RESET_TTY_TO_COMMON_DEFAULTS
346 /* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */
347 if (lstat (name, &savestat) < 0) /* you lose out */
348 ;
349 else
350# endif
351 {
352 saved = true;
353 chown (name, getuid (), ttyconf.gid); /* fail silently */
354 chmod (name, ttyconf.mode);
355# ifdef HAVE_REVOKE
356 revoke (name);
357# endif
358 }
359 }
360 else
361 { /* action == RESTORE */
362# ifndef RESET_TTY_TO_COMMON_DEFAULTS
363 if (saved)
364 {
365 chmod (name, savestat.st_mode);
366 chown (name, savestat.st_uid, savestat.st_gid);
367 }
368# else
369 chmod (name, (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH));
370 chown (name, 0, 0);
371# endif
372
373 }
374
375 rxvt_privileges (IGNORE);
376}
377#endif
378
379rxvt_ptytty::rxvt_ptytty ()
380{
381 pty = tty = -1;
382 name = 0;
383#ifndef NO_SETOWNER_TTYDEV
384 saved = false;
385#endif
386}
387
388rxvt_ptytty::~rxvt_ptytty ()
389{
390 put ();
391}
392
393void
394
395rxvt_ptytty::close_tty ()
396{
397 if (tty >= 0) close (tty);
398 tty = -1;
399}
400
401void
402rxvt_ptytty::put ()
403{
404#ifndef NO_SETOWNER_TTYDEV
405 if (tty >= 0)
406 privileges (RESTORE);
407#endif
408
409 if (pty >= 0) close (pty);
410 close_tty ();
411 free (name);
412
413 pty = tty = -1;
414 name = 0;
415}
416
417bool
418rxvt_ptytty::make_controlling_tty ()
419{
420 return control_tty (tty, name) >= 0;
421}
422
423bool
424rxvt_ptytty::get ()
425{
426 /* get master (pty) */
427 if ((pty = get_pty (&tty, &name)) < 0)
428 return false;
429
430 fcntl (pty, F_SETFL, O_NONBLOCK);
431
432 /* get slave (tty) */
433 if (tty < 0)
434 {
435#ifndef NO_SETOWNER_TTYDEV
436 privileges (SAVE);
437#endif
438
439 if ((tty = get_tty (name)) < 0)
440 {
441 put ();
442 return false;
443 }
444 }
445
446 return true;
447}
448
449void
450rxvt_ptytty::set_utf8_mode (bool on)
451{
452#ifdef IUTF8
453 if (pty != -1)
454 {
455 struct termios tio;
456
457 if (tcgetattr (pty, &tio) != -1)
458 {
459 tcflag_t new_cflag = tio.c_iflag;
460
461 if (on)
462 new_cflag |= IUTF8;
463 else
464 new_cflag &= ~IUTF8;
465
466 if (new_cflag != tio.c_iflag)
467 {
468 tio.c_iflag = new_cflag;
469 tcsetattr (pty, TCSANOW, &tio);
470 }
471 }
472 }
473#endif
474}
475
313/*----------------------- end-of-file (C source) -----------------------*/ 476/*----------------------- end-of-file (C source) -----------------------*/
477

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