ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/rxvt-unicode/src/ptytty.C
(Generate patch)

Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.2 by pcg, Mon Nov 24 17:31:27 2003 UTC vs.
Revision 1.54 by root, Sun Jan 22 00:48:13 2006 UTC

1/*--------------------------------*-C-*---------------------------------* 1/*--------------------------------*-C-*---------------------------------*
2 * File: ptytty.c 2 * File: ptytty.C
3 *----------------------------------------------------------------------* 3 *----------------------------------------------------------------------*
4 * $Id: ptytty.C,v 1.2 2003/11/24 17:31:27 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) 2004-2006 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.
… …
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 25
26/* 26#include "fdpass.h"
27 * Try to be self-contained except for the above autoconfig'd defines 27#include "ptytty.h"
28 */
29 28
30#include <stdio.h>
31#ifdef HAVE_STDLIB_H
32# include <stdlib.h> 29#include <cstdlib>
33#endif 30#include <cstring>
34#ifdef HAVE_SYS_TYPES_H 31
35# include <sys/types.h> 32#include <sys/types.h>
36#endif 33#include <sys/socket.h>
37#ifdef HAVE_UNISTD_H
38# include <unistd.h> 34#include <unistd.h>
39#endif
40#if defined(HAVE_STRING_H)
41# include <string.h>
42#endif
43#ifdef HAVE_FCNTL_H
44# include <fcntl.h> 35#include <fcntl.h>
45#endif 36
46#ifdef HAVE_SYS_IOCTL_H 37#ifdef HAVE_SYS_IOCTL_H
47# include <sys/ioctl.h> 38# include <sys/ioctl.h>
48#endif 39#endif
49#if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__) 40#if defined(HAVE_DEV_PTMX) && defined(HAVE_SYS_STROPTS_H)
50# include <sys/stropts.h> /* for I_PUSH */ 41# include <sys/stropts.h> /* for I_PUSH */
51#endif 42#endif
52 43#ifdef HAVE_ISASTREAM
53 44# include <stropts.h>
54#ifdef DEBUG_TTY
55# define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr)
56#else
57# define D_TTY(x)
58#endif 45#endif
46#if defined(HAVE_PTY_H)
47# include <pty.h>
48#elif defined(HAVE_LIBUTIL_H)
49# include <libutil.h>
50#elif defined(HAVE_UTIL_H)
51# include <util.h>
52#endif
53#ifdef TTY_GID_SUPPORT
54#include <grp.h>
55#endif
56
57#include <cstdio>
58
59/////////////////////////////////////////////////////////////////////////////
59 60
60/* ------------------------------------------------------------------------- * 61/* ------------------------------------------------------------------------- *
61 * GET PSEUDO TELETYPE - MASTER AND SLAVE * 62 * GET PSEUDO TELETYPE - MASTER AND SLAVE *
62 * ------------------------------------------------------------------------- */ 63 * ------------------------------------------------------------------------- */
63/* 64/*
64 * Returns pty file descriptor, or -1 on failure 65 * Returns pty file descriptor, or -1 on failure
65 * If successful, ttydev is set to the name of the slave device. 66 * If successful, ttydev is set to the name of the slave device.
66 * fd_tty _may_ also be set to an open fd to the slave device 67 * fd_tty _may_ also be set to an open fd to the slave device
67 */ 68 */
68/* EXTPROTO */ 69#if defined(UNIX98_PTY)
69int 70static int
70rxvt_get_pty(int *fd_tty, const char **ttydev) 71get_pty (int *fd_tty, char **ttydev)
71{ 72{
72 int pfd; 73 int pfd;
73 74
74#ifdef PTYS_ARE_OPENPTY 75# if defined(HAVE_GETPT)
75 char tty_name[sizeof "/dev/pts/????\0"];
76
77 if (openpty(&pfd, fd_tty, tty_name, NULL, NULL) != -1) {
78 *ttydev = strdup(tty_name);
79 return pfd;
80 }
81#endif
82
83#ifdef PTYS_ARE__GETPTY
84 *ttydev = _getpty(&pfd, O_RDWR | O_NDELAY | O_NOCTTY, 0622, 0);
85 if (*ttydev != NULL)
86 return pfd;
87#endif
88
89#ifdef PTYS_ARE_GETPTY
90 char *ptydev;
91
92 while ((ptydev = getpty()) != NULL)
93 if ((pfd = open(ptydev, O_RDWR | O_NOCTTY, 0)) >= 0) {
94 *ttydev = ptydev;
95 return pfd;
96 }
97#endif
98
99#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
100# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX)
101 {
102# ifdef PTYS_ARE_GETPT
103 pfd = getpt(); 76 pfd = getpt();
77# elif defined(HAVE_POSIX_OPENPT)
78 pfd = posix_openpt (O_RDWR);
104# else 79# else
105 pfd = open("/dev/ptmx", O_RDWR | O_NOCTTY, 0); 80 pfd = open (CLONE_DEVICE, O_RDWR | O_NOCTTY, 0);
106# endif
107 if (pfd >= 0) {
108 if (grantpt(pfd) == 0 /* change slave permissions */
109 && unlockpt(pfd) == 0) { /* slave now unlocked */
110 *ttydev = ptsname(pfd); /* get slave's name */
111 return pfd;
112 }
113 close(pfd);
114 }
115 }
116# endif 81# endif
117#endif 82 if (pfd >= 0)
83 {
84 if (grantpt (pfd) == 0 /* change slave permissions */
85 && unlockpt (pfd) == 0)
86 { /* slave now unlocked */
87 *ttydev = strdup (ptsname (pfd)); /* get slave's name */
88 return pfd;
89 }
118 90
119#ifdef PTYS_ARE_PTC 91 close (pfd);
92 }
93
94 return -1;
95}
96#elif defined(HAVE_OPENPTY)
97static int
98get_pty (int *fd_tty, char **ttydev)
99{
100 int pfd;
101 int res;
102 char tty_name[32];
103
104 res = openpty (&pfd, fd_tty, tty_name, NULL, NULL);
105 if (res != -1)
106 {
107 *ttydev = strdup (tty_name);
108 return pfd;
109 }
110
111 return -1;
112}
113#elif defined(HAVE__GETPTY)
114static int
115get_pty (int *fd_tty, char **ttydev)
116{
117 int pfd;
118
119 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
120 if (*ttydev != NULL)
121 return pfd;
122
123 return -1;
124}
125#elif defined(HAVE_DEV_PTC)
126static int
127get_pty (int *fd_tty, char **ttydev)
128{
129 int pfd;
130
120 if ((pfd = open("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) { 131 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
121 *ttydev = ttyname(pfd);
122 return pfd;
123 } 132 {
124#endif 133 *ttydev = strdup (ttyname (pfd));
134 return pfd;
135 }
125 136
126#ifdef PTYS_ARE_CLONE 137 return -1;
138}
139#elif defined(HAVE_DEV_CLONE)
140static int
141get_pty (int *fd_tty, char **ttydev)
142{
143 int pfd;
144
127 if ((pfd = open("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) { 145 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
128 *ttydev = ptsname(pfd);
129 return pfd;
130 } 146 {
131#endif 147 *ttydev = strdup (ptsname (pfd));
132 148 return pfd;
133#ifdef PTYS_ARE_NUMERIC
134 {
135 int idx;
136 char *c1, *c2;
137 char pty_name[] = "/dev/ptyp???";
138 char tty_name[] = "/dev/ttyp???";
139
140 c1 = &(pty_name[sizeof(pty_name) - 4]);
141 c2 = &(tty_name[sizeof(tty_name) - 4]);
142 for (idx = 0; idx < 256; idx++) {
143 sprintf(c1, "%d", idx);
144 sprintf(c2, "%d", idx);
145 if (access(tty_name, F_OK) < 0) {
146 idx = 256;
147 break;
148 } 149 }
150
151 return -1;
152}
153#else
154/* Based on the code in openssh/openbsd-compat/bsd-openpty.c */
155static int
156get_pty (int *fd_tty, char **ttydev)
157{
158 int pfd;
159 int i;
160 char pty_name[32];
161 char tty_name[32];
162 const char *majors = "pqrstuvwxyzabcde";
163 const char *minors = "0123456789abcdef";
164 for (i = 0; i < 256; i++)
165 {
166 snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]);
167 snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]);
168 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
169 {
170 snprintf(pty_name, 32, "/dev/ptyp%d", i);
171 snprintf(tty_name, 32, "/dev/ttyp%d", i);
149 if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) { 172 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
173 continue;
174 }
150 if (access(tty_name, R_OK | W_OK) == 0) { 175 if (access (tty_name, R_OK | W_OK) == 0)
176 {
151 *ttydev = strdup(tty_name); 177 *ttydev = strdup (tty_name);
152 return pfd; 178 return pfd;
153 } 179 }
154 close(pfd); 180
181 close (pfd);
155 } 182 }
156 } 183}
157 }
158#endif
159#ifdef PTYS_ARE_SEARCHED
160 {
161 const char *c1, *c2;
162 char pty_name[] = "/dev/pty??";
163 char tty_name[] = "/dev/tty??";
164
165# ifndef PTYCHAR1
166# define PTYCHAR1 "pqrstuvwxyz"
167# endif 184#endif
168# ifndef PTYCHAR2
169# define PTYCHAR2 "0123456789abcdef"
170# endif
171 for (c1 = PTYCHAR1; *c1; c1++) {
172 pty_name[(sizeof(pty_name) - 3)] =
173 tty_name[(sizeof(pty_name) - 3)] = *c1;
174 for (c2 = PTYCHAR2; *c2; c2++) {
175 pty_name[(sizeof(pty_name) - 2)] =
176 tty_name[(sizeof(pty_name) - 2)] = *c2;
177 if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) {
178 if (access(tty_name, R_OK | W_OK) == 0) {
179 *ttydev = strdup(tty_name);
180 return pfd;
181 }
182 close(pfd);
183 }
184 }
185 }
186 }
187#endif
188 return -1;
189}
190 185
191/*----------------------------------------------------------------------*/ 186/*----------------------------------------------------------------------*/
192/* 187/*
193 * Returns tty file descriptor, or -1 on failure 188 * Returns tty file descriptor, or -1 on failure
194 */ 189 */
195/* EXTPROTO */ 190static int
196int
197rxvt_get_tty(const char *ttydev) 191get_tty (char *ttydev)
198{ 192{
199 return open(ttydev, O_RDWR | O_NOCTTY, 0); 193 return open (ttydev, O_RDWR | O_NOCTTY, 0);
200} 194}
201 195
202/*----------------------------------------------------------------------*/ 196/*----------------------------------------------------------------------*/
203/* 197/*
204 * Make our tty a controlling tty so that /dev/tty points to us 198 * Make our tty a controlling tty so that /dev/tty points to us
205 */ 199 */
206/* EXTPROTO */ 200static int
207int 201control_tty (int fd_tty)
208rxvt_control_tty(int fd_tty, const char *ttydev)
209{ 202{
210#ifndef __QNX__
211 int fd;
212
213 D_TTY((stderr, "rxvt_control_tty(): pid: %d, tty fd: %d, dev: %s", getpid(), fd_tty, ttydev));
214/* ---------------------------------------- */
215# ifdef HAVE_SETSID
216 setsid(); 203 setsid ();
204
205#if defined(HAVE_DEV_PTMX) && defined(I_PUSH)
206 /*
207 * Push STREAMS modules:
208 * ptem: pseudo-terminal hardware emulation module.
209 * ldterm: standard terminal line discipline.
210 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
211 *
212 * After we push the STREAMS modules, the first open () on the slave side
213 * (i.e. the next section between the dashes giving us "tty opened OK")
214 * should make the "ptem" (or "ldterm" depending upon either which OS
215 * version or which set of manual pages you have) module give us a
216 * controlling terminal. We must already have close ()d the master side
217 * fd in this child process before we push STREAMS modules on because the
218 * documentation is really unclear about whether it is any close () on
219 * the master side or the last close () - i.e. a proper STREAMS dismantling
220 * close () - on the master side which causes a hang up to be sent
221 * through - Geoff Wing
222 */
223# ifdef HAVE_ISASTREAM
224 if (isastream (fd_tty) == 1)
217# endif 225# endif
218# if defined(HAVE_SETPGID) 226 {
219 setpgid(0, 0); 227 ioctl (fd_tty, I_PUSH, "ptem");
220# elif defined(HAVE_SETPGRP) 228 ioctl (fd_tty, I_PUSH, "ldterm");
221 setpgrp(0, 0); 229 ioctl (fd_tty, I_PUSH, "ttcompat");
230 }
231#endif
232
233 ioctl (fd_tty, TIOCSCTTY, NULL);
234
235 int fd = open ("/dev/tty", O_WRONLY);
236 if (fd < 0)
237 return -1; /* fatal */
238
239 close (fd);
240
241 return 0;
242}
243
244void
245ptytty::close_tty ()
246{
247 if (tty < 0)
248 return;
249
250 close (tty);
251 tty = -1;
252}
253
254bool
255ptytty::make_controlling_tty ()
256{
257 return control_tty (tty) >= 0;
258}
259
260void
261ptytty::set_utf8_mode (bool on)
262{
263#ifdef IUTF8
264 if (pty < 0)
265 return;
266
267 struct termios tio;
268
269 if (tcgetattr (pty, &tio) != -1)
270 {
271 tcflag_t new_cflag = tio.c_iflag;
272
273 if (on)
274 new_cflag |= IUTF8;
275 else
276 new_cflag &= ~IUTF8;
277
278 if (new_cflag != tio.c_iflag)
279 {
280 tio.c_iflag = new_cflag;
281 tcsetattr (pty, TCSANOW, &tio);
282 }
283 }
284#endif
285}
286
287static struct ttyconf {
288 gid_t gid;
289 mode_t mode;
290
291 ttyconf ()
292 {
293#ifdef TTY_GID_SUPPORT
294 struct group *gr = getgrnam ("tty");
295
296 if (gr)
297 { /* change group ownership of tty to "tty" */
298 mode = S_IRUSR | S_IWUSR | S_IWGRP;
299 gid = gr->gr_gid;
300 }
301 else
302#endif /* TTY_GID_SUPPORT */
303 {
304 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH;
305 gid = 0;
306 }
307 }
308} ttyconf;
309
310ptytty_unix::ptytty_unix ()
311{
312 name = 0;
313#if UTMP_SUPPORT
314 cmd_pid = 0;
315#endif
316}
317
318ptytty_unix::~ptytty_unix ()
319{
320#if UTMP_SUPPORT
321 logout ();
322#endif
323 put ();
324}
325
326void
327ptytty_unix::put ()
328{
329 chmod (name, RESTORE_TTY_MODE);
330 chown (name, 0, ttyconf.gid);
331
332 close_tty ();
333
334 if (pty >= 0)
335 close (pty);
336
337 free (name);
338
339 pty = tty = -1;
340 name = 0;
341}
342
343bool
344ptytty_unix::get ()
345{
346 /* get master (pty) */
347 if ((pty = get_pty (&tty, &name)) < 0)
348 return false;
349
350 fcntl (pty, F_SETFL, O_NONBLOCK);
351
352 /* get slave (tty) */
353 if (tty < 0)
354 {
355#ifndef NO_SETOWNER_TTYDEV
356 chown (name, getuid (), ttyconf.gid); /* fail silently */
357 chmod (name, ttyconf.mode);
358# ifdef HAVE_REVOKE
359 revoke (name);
222# endif 360# endif
223/* ---------------------------------------- */
224# ifdef TIOCNOTTY
225 fd = open("/dev/tty", O_RDWR | O_NOCTTY);
226 D_TTY((stderr, "rxvt_control_tty(): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes"));
227 if (fd >= 0) {
228 ioctl(fd, TIOCNOTTY, NULL); /* void tty associations */
229 close(fd);
230 }
231# endif 361#endif
232/* ---------------------------------------- */ 362
233 fd = open("/dev/tty", O_RDWR | O_NOCTTY); 363 if ((tty = get_tty (name)) < 0)
234 D_TTY((stderr, "rxvt_control_tty(): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)")); 364 {
235 if (fd >= 0) 365 put ();
236 close(fd); /* ouch: still have controlling tty */ 366 return false;
237/* ---------------------------------------- */ 367 }
238#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 368 }
239/* 369
240 * Push STREAMS modules: 370 return true;
241 * ptem: pseudo-terminal hardware emulation module. 371}
242 * ldterm: standard terminal line discipline. 372
243 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. 373#if PTYTTY_HELPER
244 * 374
245 * After we push the STREAMS modules, the first open() on the slave side 375static int sock_fd;
246 * (i.e. the next section between the dashes giving us "tty opened OK") 376static int pid;
247 * should make the "ptem" (or "ldterm" depending upon either which OS 377
248 * version or which set of manual pages you have) module give us a 378struct command
249 * controlling terminal. We must already have close()d the master side 379{
250 * fd in this child process before we push STREAMS modules on because the 380 enum { get, login, destroy } type;
251 * documentation is really unclear about whether it is any close() on 381
252 * the master side or the last close() - i.e. a proper STREAMS dismantling 382 ptytty *id;
253 * close() - on the master side which causes a hang up to be sent 383
254 * through - Geoff Wing 384 bool login_shell;
255 */ 385 int cmd_pid;
256# ifdef HAVE_ISASTREAM 386 char hostname[512]; // arbitrary, but should be plenty
257 if (isastream(fd_tty) == 1) 387};
388
389struct ptytty_proxy : ptytty
390{
391 ptytty *id;
392
393 ptytty_proxy ()
394 : id(0)
395 {
396 }
397
398 ~ptytty_proxy ();
399
400 bool get ();
401 void login (int cmd_pid, bool login_shell, const char *hostname);
402};
403
404bool
405ptytty_proxy::get ()
406{
407 command cmd;
408
409 cmd.type = command::get;
410
411 write (sock_fd, &cmd, sizeof (cmd));
412
413 if (read (sock_fd, &id, sizeof (id)) != sizeof (id))
414 fatal ("protocol error while creating pty using helper process, aborting.\n");
415
416 if (!id)
417 return false;
418
419 if ((pty = ptytty_recv_fd (sock_fd)) < 0
420 || (tty = ptytty_recv_fd (sock_fd)) < 0)
421 fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n");
422
423 return true;
424}
425
426void
427ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname)
428{
429 command cmd;
430
431 cmd.type = command::login;
432 cmd.id = id;
433 cmd.cmd_pid = cmd_pid;
434 cmd.login_shell = login_shell;
435 strncpy (cmd.hostname, hostname, sizeof (cmd.hostname));
436
437 write (sock_fd, &cmd, sizeof (cmd));
438}
439
440ptytty_proxy::~ptytty_proxy ()
441{
442 if (id)
443 {
444 command cmd;
445
446 cmd.type = command::destroy;
447 cmd.id = id;
448
449 write (sock_fd, &cmd, sizeof (cmd));
450 }
451}
452
453static
454void serve ()
455{
456 command cmd;
457 vector<ptytty *> ptys;
458
459 while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command))
460 {
461 if (cmd.type == command::get)
462 {
463 // -> id ptyfd ttyfd
464 cmd.id = new ptytty_unix;
465
466 if (cmd.id->get ())
467 {
468 write (sock_fd, &cmd.id, sizeof (cmd.id));
469 ptys.push_back (cmd.id);
470
471 ptytty_send_fd (sock_fd, cmd.id->pty);
472 ptytty_send_fd (sock_fd, cmd.id->tty);
473 }
474 else
475 {
476 delete cmd.id;
477 cmd.id = 0;
478 write (sock_fd, &cmd.id, sizeof (cmd.id));
479 }
480 }
481 else if (cmd.type == command::login)
482 {
483#if UTMP_SUPPORT
484 if (find (ptys.begin (), ptys.end (), cmd.id))
485 {
486 cmd.hostname[sizeof (cmd.hostname) - 1] = 0;
487 cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname);
488 }
258# endif 489#endif
490 }
491 else if (cmd.type == command::destroy)
492 {
493 ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id);
494
495 if (pty)
496 {
497 delete *pty;
498 ptys.erase (pty);
499 }
500 }
501 else
502 break;
259 { 503 }
260 D_TTY((stderr, "rxvt_control_tty(): Pushing STREAMS modules")); 504
261 ioctl(fd_tty, I_PUSH, "ptem"); 505 // destroy all ptys
262 ioctl(fd_tty, I_PUSH, "ldterm"); 506 for (ptytty **i = ptys.end (); i-- > ptys.begin (); )
263 ioctl(fd_tty, I_PUSH, "ttcompat"); 507 delete *i;
508}
509
510void ptytty_server ()
511{
512 int sv[2];
513
514 if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv))
515 fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n");
516
517 pid = fork ();
518
519 if (pid < 0)
520 fatal ("could not create pty/sessiondb helper process, aborting.\n");
521
522 if (pid)
264 } 523 {
265#endif 524 // client, process
266/* ---------------------------------------- */ 525 sock_fd = sv[0];
267# if defined(TIOCSCTTY) 526 close (sv[1]);
268 fd = ioctl(fd_tty, TIOCSCTTY, NULL); 527 fcntl (sock_fd, F_SETFD, FD_CLOEXEC);
269 D_TTY((stderr, "rxvt_control_tty(): ioctl(..,TIOCSCTTY): %d", fd)); 528 }
270# elif defined(TIOCSETCTTY)
271 fd = ioctl(fd_tty, TIOCSETCTTY, NULL);
272 D_TTY((stderr, "rxvt_control_tty(): ioctl(..,TIOCSETCTTY): %d", fd));
273# else 529 else
274 fd = open(ttydev, O_RDWR); 530 {
275 D_TTY((stderr, "rxvt_control_tty(): tty open%s", fd < 0 ? " failure" : "ed OK")); 531 // server, pty-helper
276 if (fd >= 0) 532 sock_fd = sv[1];
277 close(fd); 533
534 for (int fd = 0; fd < 1023; fd++)
535 if (fd != sock_fd)
536 close (fd);
537
538 serve ();
539 _exit (EXIT_SUCCESS);
540 }
541}
542
278# endif 543#endif
279/* ---------------------------------------- */ 544
280 fd = open("/dev/tty", O_WRONLY); 545// a "factory" *g*
281 D_TTY((stderr, "rxvt_control_tty(): do we have controlling tty now: %s", fd < 0 ? "no (fatal)" : "yes (good)")); 546ptytty *
547new_ptytty ()
548{
549#if PTYTTY_HELPER
282 if (fd < 0) 550 if (pid > 0)
283 return -1; /* fatal */ 551 // use helper process
284 close(fd); 552 return new ptytty_proxy;
285/* ---------------------------------------- */ 553 else
286 D_TTY((stderr, "rxvt_control_tty(): tcgetpgrp(): %d getpgrp(): %d", tcgetpgrp(fd_tty), getpgrp())); 554#endif
287/* ---------------------------------------- */ 555 return new ptytty_unix;
288#endif /* ! __QNX__ */
289 return 0;
290} 556}
557
291/*----------------------- end-of-file (C source) -----------------------*/ 558/*----------------------- end-of-file (C source) -----------------------*/
559

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines