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Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.10 by pcg, Fri Apr 2 20:41:01 2004 UTC vs.
Revision 1.53 by ayin, Sat Jan 21 18:15:26 2006 UTC

1/*--------------------------------*-C-*---------------------------------* 1/*--------------------------------*-C-*---------------------------------*
2 * File: ptytty.c 2 * File: ptytty.C
3 *----------------------------------------------------------------------* 3 *----------------------------------------------------------------------*
4 * 4 *
5 * All portions of code are copyright by their respective author/s. 5 * All portions of code are copyright by their respective author/s.
6 * 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>
7 * 8 *
8 * 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
9 * 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
10 * the Free Software Foundation; either version 2 of the License, or 11 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version. 12 * (at your option) any later version.
… …
19 * along with this program; if not, write to the Free Software 20 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 *---------------------------------------------------------------------*/ 22 *---------------------------------------------------------------------*/
22 23
23#include "../config.h" /* NECESSARY */ 24#include "../config.h" /* NECESSARY */
25#include "rxvt.h"
24 26
25/*
26 * Try to be self-contained except for the above autoconfig'd defines
27 */
28
29#if 0
30#ifdef HAVE_GETPT
31# define _GNU_SOURCE
32#endif
33#endif
34
35#include <cstdio>
36#ifdef HAVE_STDLIB_H
37# include <cstdlib> 27#include <cstdlib>
38#endif 28#include <cstring>
39#ifdef HAVE_SYS_TYPES_H 29
40# include <sys/types.h> 30#include <sys/types.h>
41#endif 31#include <sys/socket.h>
42#ifdef HAVE_UNISTD_H
43# include <unistd.h> 32#include <unistd.h>
44#endif
45#if defined(HAVE_STRING_H)
46# include <cstring>
47#endif
48#ifdef HAVE_FCNTL_H
49# include <fcntl.h> 33#include <fcntl.h>
50#endif 34
51#ifdef HAVE_SYS_IOCTL_H 35#ifdef HAVE_SYS_IOCTL_H
52# include <sys/ioctl.h> 36# include <sys/ioctl.h>
53#endif 37#endif
54#if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__) 38#if defined(HAVE_DEV_PTMX) && defined(HAVE_SYS_STROPTS_H)
55# include <sys/stropts.h> /* for I_PUSH */ 39# include <sys/stropts.h> /* for I_PUSH */
56#endif 40#endif
57#ifdef HAVE_ISASTREAM 41#ifdef HAVE_ISASTREAM
58# include <stropts.h> 42# include <stropts.h>
59#endif 43#endif
60 44#if defined(HAVE_PTY_H)
61#ifdef DEBUG_TTY 45# include <pty.h>
62# define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr) 46#elif defined(HAVE_LIBUTIL_H)
63#else 47# include <libutil.h>
64# define D_TTY(x) 48#elif defined(HAVE_UTIL_H)
49# include <util.h>
65#endif 50#endif
51#ifdef TTY_GID_SUPPORT
52#include <grp.h>
53#endif
54
55#include <cstdio>
56
57#include "rxvtutil.h"
58#include "fdpass.h"
59#include "ptytty.h"
60
61/////////////////////////////////////////////////////////////////////////////
66 62
67/* ------------------------------------------------------------------------- * 63/* ------------------------------------------------------------------------- *
68 * GET PSEUDO TELETYPE - MASTER AND SLAVE * 64 * GET PSEUDO TELETYPE - MASTER AND SLAVE *
69 * ------------------------------------------------------------------------- */ 65 * ------------------------------------------------------------------------- */
70/* 66/*
71 * Returns pty file descriptor, or -1 on failure 67 * Returns pty file descriptor, or -1 on failure
72 * If successful, ttydev is set to the name of the slave device. 68 * If successful, ttydev is set to the name of the slave device.
73 * fd_tty _may_ also be set to an open fd to the slave device 69 * fd_tty _may_ also be set to an open fd to the slave device
74 */ 70 */
75/* EXTPROTO */ 71#if defined(UNIX98_PTY)
76int 72static int
77rxvt_get_pty (int *fd_tty, const char **ttydev) 73get_pty (int *fd_tty, char **ttydev)
78{ 74{
79 int pfd; 75 int pfd;
80 76
81#ifdef PTYS_ARE_OPENPTY 77# if defined(HAVE_GETPT)
78 pfd = getpt();
79# elif defined(HAVE_POSIX_OPENPT)
80 pfd = posix_openpt (O_RDWR);
81# else
82 pfd = open (CLONE_DEVICE, O_RDWR | O_NOCTTY, 0);
83# endif
84 if (pfd >= 0)
85 {
86 if (grantpt (pfd) == 0 /* change slave permissions */
87 && unlockpt (pfd) == 0)
88 { /* slave now unlocked */
89 *ttydev = strdup (ptsname (pfd)); /* get slave's name */
90 return pfd;
91 }
82 92
83 char tty_name[sizeof "/dev/pts/????\0"]; 93 close (pfd);
94 }
84 95
96 return -1;
97}
98#elif defined(HAVE_OPENPTY)
99static int
100get_pty (int *fd_tty, char **ttydev)
101{
102 int pfd;
103 int res;
104 char tty_name[32];
105
85 if (openpty (&pfd, fd_tty, tty_name, NULL, NULL) != -1) 106 res = openpty (&pfd, fd_tty, tty_name, NULL, NULL);
107 if (res != -1)
86 { 108 {
87 *ttydev = strdup (tty_name); 109 *ttydev = strdup (tty_name);
88 return pfd; 110 return pfd;
89 } 111 }
90#endif
91 112
92#ifdef PTYS_ARE__GETPTY 113 return -1;
114}
115#elif defined(HAVE__GETPTY)
116static int
117get_pty (int *fd_tty, char **ttydev)
118{
119 int pfd;
120
93 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); 121 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
94 if (*ttydev != NULL) 122 if (*ttydev != NULL)
95 return pfd; 123 return pfd;
96#endif
97 124
98#ifdef PTYS_ARE_GETPTY 125 return -1;
126}
127#elif defined(HAVE_DEV_PTC)
128static int
129get_pty (int *fd_tty, char **ttydev)
130{
131 int pfd;
99 132
100 char *ptydev;
101
102 while ((ptydev = getpty ()) != NULL)
103 if ((pfd = open (ptydev, O_RDWR | O_NOCTTY, 0)) >= 0)
104 {
105 *ttydev = ptydev;
106 return pfd;
107 }
108#endif
109
110#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
111# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX)
112
113 {
114# ifdef PTYS_ARE_GETPT
115 pfd = getpt ();
116# else
117
118 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
119# endif
120
121 if (pfd >= 0)
122 {
123 if (grantpt (pfd) == 0 /* change slave permissions */
124 && unlockpt (pfd) == 0)
125 { /* slave now unlocked */
126 *ttydev = ptsname (pfd); /* get slave's name */
127 return pfd;
128 }
129 close (pfd);
130 }
131 }
132# endif
133#endif
134
135#ifdef PTYS_ARE_PTC
136 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 133 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
137 { 134 {
138 *ttydev = ttyname (pfd); 135 *ttydev = strdup (ttyname (pfd));
139 return pfd; 136 return pfd;
140 } 137 }
141#endif
142 138
143#ifdef PTYS_ARE_CLONE 139 return -1;
140}
141#elif defined(HAVE_DEV_CLONE)
142static int
143get_pty (int *fd_tty, char **ttydev)
144{
145 int pfd;
146
144 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) 147 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
145 { 148 {
146 *ttydev = ptsname (pfd); 149 *ttydev = strdup (ptsname (pfd));
147 return pfd; 150 return pfd;
148 } 151 }
149#endif
150 152
151#ifdef PTYS_ARE_NUMERIC
152 {
153 int idx;
154 char *c1, *c2;
155 char pty_name[] = "/dev/ptyp???";
156 char tty_name[] = "/dev/ttyp???";
157
158 c1 = & (pty_name[sizeof (pty_name) - 4]);
159 c2 = & (tty_name[sizeof (tty_name) - 4]);
160 for (idx = 0; idx < 256; idx++)
161 {
162 sprintf (c1, "%d", idx);
163 sprintf (c2, "%d", idx);
164 if (access (tty_name, F_OK) < 0)
165 {
166 idx = 256;
167 break;
168 }
169 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
170 {
171 if (access (tty_name, R_OK | W_OK) == 0)
172 {
173 *ttydev = strdup (tty_name);
174 return pfd;
175 }
176 close (pfd);
177 }
178 }
179 }
180#endif
181#ifdef PTYS_ARE_SEARCHED
182 {
183 const char *c1, *c2;
184 char pty_name[] = "/dev/pty??";
185 char tty_name[] = "/dev/tty??";
186
187# ifndef PTYCHAR1
188# define PTYCHAR1 "pqrstuvwxyz"
189# endif
190# ifndef PTYCHAR2
191# define PTYCHAR2 "0123456789abcdef"
192# endif
193
194 for (c1 = PTYCHAR1; *c1; c1++)
195 {
196 pty_name[ (sizeof (pty_name) - 3)] =
197 tty_name[ (sizeof (pty_name) - 3)] = *c1;
198 for (c2 = PTYCHAR2; *c2; c2++)
199 {
200 pty_name[ (sizeof (pty_name) - 2)] =
201 tty_name[ (sizeof (pty_name) - 2)] = *c2;
202 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
203 {
204 if (access (tty_name, R_OK | W_OK) == 0)
205 {
206 *ttydev = strdup (tty_name);
207 return pfd;
208 }
209 close (pfd);
210 }
211 }
212 }
213 }
214#endif
215 return -1; 153 return -1;
216} 154}
155#else
156/* Based on the code in openssh/openbsd-compat/bsd-openpty.c */
157static int
158get_pty (int *fd_tty, char **ttydev)
159{
160 int pfd;
161 int i;
162 char pty_name[32];
163 char tty_name[32];
164 const char *majors = "pqrstuvwxyzabcde";
165 const char *minors = "0123456789abcdef";
166 for (i = 0; i < 256; i++)
167 {
168 snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]);
169 snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]);
170 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
171 {
172 snprintf(pty_name, 32, "/dev/ptyp%d", i);
173 snprintf(tty_name, 32, "/dev/ttyp%d", i);
174 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
175 continue;
176 }
177 if (access (tty_name, R_OK | W_OK) == 0)
178 {
179 *ttydev = strdup (tty_name);
180 return pfd;
181 }
182
183 close (pfd);
184 }
185}
186#endif
217 187
218/*----------------------------------------------------------------------*/ 188/*----------------------------------------------------------------------*/
219/* 189/*
220 * Returns tty file descriptor, or -1 on failure 190 * Returns tty file descriptor, or -1 on failure
221 */ 191 */
222/* EXTPROTO */ 192static int
223int
224rxvt_get_tty (const char *ttydev) 193get_tty (char *ttydev)
225{ 194{
226 return open (ttydev, O_RDWR | O_NOCTTY, 0); 195 return open (ttydev, O_RDWR | O_NOCTTY, 0);
227} 196}
228 197
229/*----------------------------------------------------------------------*/ 198/*----------------------------------------------------------------------*/
230/* 199/*
231 * Make our tty a controlling tty so that /dev/tty points to us 200 * Make our tty a controlling tty so that /dev/tty points to us
232 */ 201 */
233/* EXTPROTO */ 202static int
234int 203control_tty (int fd_tty)
235rxvt_control_tty (int fd_tty, const char *ttydev)
236{ 204{
237#ifndef __QNX__
238 int fd;
239
240 D_TTY ((stderr, "rxvt_control_tty (): pid: %d, tty fd: %d, dev: %s", getpid (), fd_tty, ttydev));
241 /* ---------------------------------------- */
242# ifdef HAVE_SETSID
243 setsid (); 205 setsid ();
244# endif
245# if defined(HAVE_SETPGID)
246 setpgid (0, 0);
247# elif defined(HAVE_SETPGRP)
248 setpgrp (0, 0);
249# endif
250 /* ---------------------------------------- */
251# ifdef TIOCNOTTY
252 206
253 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
254 D_TTY ((stderr, "rxvt_control_tty (): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes"));
255 if (fd >= 0)
256 {
257 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */
258 close (fd);
259 }
260# endif
261 /* ---------------------------------------- */
262 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
263 D_TTY ((stderr, "rxvt_control_tty (): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)"));
264 if (fd >= 0)
265 close (fd); /* ouch: still have controlling tty */
266 /* ---------------------------------------- */
267#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 207#if defined(HAVE_DEV_PTMX) && defined(I_PUSH)
268 /* 208 /*
269 * Push STREAMS modules: 209 * Push STREAMS modules:
270 * ptem: pseudo-terminal hardware emulation module. 210 * ptem: pseudo-terminal hardware emulation module.
271 * ldterm: standard terminal line discipline. 211 * ldterm: standard terminal line discipline.
272 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. 212 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
… …
284 */ 224 */
285# ifdef HAVE_ISASTREAM 225# ifdef HAVE_ISASTREAM
286 if (isastream (fd_tty) == 1) 226 if (isastream (fd_tty) == 1)
287# endif 227# endif
288 { 228 {
289 D_TTY ((stderr, "rxvt_control_tty (): Pushing STREAMS modules"));
290 ioctl (fd_tty, I_PUSH, "ptem"); 229 ioctl (fd_tty, I_PUSH, "ptem");
291 ioctl (fd_tty, I_PUSH, "ldterm"); 230 ioctl (fd_tty, I_PUSH, "ldterm");
292 ioctl (fd_tty, I_PUSH, "ttcompat"); 231 ioctl (fd_tty, I_PUSH, "ttcompat");
293 } 232 }
294#endif 233#endif
295 /* ---------------------------------------- */ 234
296# if defined(TIOCSCTTY)
297 fd = ioctl (fd_tty, TIOCSCTTY, NULL); 235 ioctl (fd_tty, TIOCSCTTY, NULL);
298 D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSCTTY): %d", fd)); 236
299# elif defined(TIOCSETCTTY)
300 fd = ioctl (fd_tty, TIOCSETCTTY, NULL);
301 D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSETCTTY): %d", fd));
302# else
303 fd = open (ttydev, O_RDWR);
304 D_TTY ((stderr, "rxvt_control_tty (): tty open%s", fd < 0 ? " failure" : "ed OK"));
305 if (fd >= 0)
306 close (fd);
307# endif
308 /* ---------------------------------------- */
309 fd = open ("/dev/tty", O_WRONLY); 237 int fd = open ("/dev/tty", O_WRONLY);
310 D_TTY ((stderr, "rxvt_control_tty (): do we have controlling tty now: %s", fd < 0 ? "no (fatal)" : "yes (good)"));
311 if (fd < 0) 238 if (fd < 0)
312 return -1; /* fatal */ 239 return -1; /* fatal */
240
313 close (fd); 241 close (fd);
314 /* ---------------------------------------- */
315 D_TTY ((stderr, "rxvt_control_tty (): tcgetpgrp (): %d getpgrp (): %d", tcgetpgrp (fd_tty), getpgrp ()));
316 /* ---------------------------------------- */
317#endif /* ! __QNX__ */
318 242
319 return 0; 243 return 0;
320} 244}
245
246void
247rxvt_ptytty::close_tty ()
248{
249 if (tty < 0)
250 return;
251
252 close (tty);
253 tty = -1;
254}
255
256bool
257rxvt_ptytty::make_controlling_tty ()
258{
259 return control_tty (tty) >= 0;
260}
261
262void
263rxvt_ptytty::set_utf8_mode (bool on)
264{
265#ifdef IUTF8
266 if (pty < 0)
267 return;
268
269 struct termios tio;
270
271 if (tcgetattr (pty, &tio) != -1)
272 {
273 tcflag_t new_cflag = tio.c_iflag;
274
275 if (on)
276 new_cflag |= IUTF8;
277 else
278 new_cflag &= ~IUTF8;
279
280 if (new_cflag != tio.c_iflag)
281 {
282 tio.c_iflag = new_cflag;
283 tcsetattr (pty, TCSANOW, &tio);
284 }
285 }
286#endif
287}
288
289static struct ttyconf {
290 gid_t gid;
291 mode_t mode;
292
293 ttyconf ()
294 {
295#ifdef TTY_GID_SUPPORT
296 struct group *gr = getgrnam ("tty");
297
298 if (gr)
299 { /* change group ownership of tty to "tty" */
300 mode = S_IRUSR | S_IWUSR | S_IWGRP;
301 gid = gr->gr_gid;
302 }
303 else
304#endif /* TTY_GID_SUPPORT */
305 {
306 mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH;
307 gid = 0;
308 }
309 }
310} ttyconf;
311
312rxvt_ptytty_unix::rxvt_ptytty_unix ()
313{
314 name = 0;
315#if UTMP_SUPPORT
316 cmd_pid = 0;
317#endif
318}
319
320rxvt_ptytty_unix::~rxvt_ptytty_unix ()
321{
322#if UTMP_SUPPORT
323 logout ();
324#endif
325 put ();
326}
327
328void
329rxvt_ptytty_unix::put ()
330{
331 chmod (name, RESTORE_TTY_MODE);
332 chown (name, 0, ttyconf.gid);
333
334 close_tty ();
335
336 if (pty >= 0)
337 close (pty);
338
339 free (name);
340
341 pty = tty = -1;
342 name = 0;
343}
344
345bool
346rxvt_ptytty_unix::get ()
347{
348 /* get master (pty) */
349 if ((pty = get_pty (&tty, &name)) < 0)
350 return false;
351
352 fcntl (pty, F_SETFL, O_NONBLOCK);
353
354 /* get slave (tty) */
355 if (tty < 0)
356 {
357#ifndef NO_SETOWNER_TTYDEV
358 chown (name, getuid (), ttyconf.gid); /* fail silently */
359 chmod (name, ttyconf.mode);
360# ifdef HAVE_REVOKE
361 revoke (name);
362# endif
363#endif
364
365 if ((tty = get_tty (name)) < 0)
366 {
367 put ();
368 return false;
369 }
370 }
371
372 return true;
373}
374
375#if PTYTTY_HELPER
376
377static int sock_fd;
378static int pid;
379
380struct command
381{
382 enum { get, login, destroy } type;
383
384 rxvt_ptytty *id;
385
386 bool login_shell;
387 int cmd_pid;
388 char hostname[512]; // arbitrary, but should be plenty
389};
390
391struct rxvt_ptytty_proxy : zero_initialized, rxvt_ptytty
392{
393 rxvt_ptytty *id;
394
395 ~rxvt_ptytty_proxy ();
396
397 bool get ();
398 void login (int cmd_pid, bool login_shell, const char *hostname);
399};
400
401bool
402rxvt_ptytty_proxy::get ()
403{
404 command cmd;
405
406 cmd.type = command::get;
407
408 write (sock_fd, &cmd, sizeof (cmd));
409
410 if (read (sock_fd, &id, sizeof (id)) != sizeof (id))
411 rxvt_fatal ("protocol error while creating pty using helper process, aborting.\n");
412
413 if (!id)
414 return false;
415
416 if ((pty = rxvt_recv_fd (sock_fd)) < 0
417 || (tty = rxvt_recv_fd (sock_fd)) < 0)
418 rxvt_fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n");
419
420 return true;
421}
422
423void
424rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname)
425{
426 command cmd;
427
428 cmd.type = command::login;
429 cmd.id = id;
430 cmd.cmd_pid = cmd_pid;
431 cmd.login_shell = login_shell;
432 strncpy (cmd.hostname, hostname, sizeof (cmd.hostname));
433
434 write (sock_fd, &cmd, sizeof (cmd));
435}
436
437rxvt_ptytty_proxy::~rxvt_ptytty_proxy ()
438{
439 command cmd;
440
441 cmd.type = command::destroy;
442 cmd.id = id;
443
444 write (sock_fd, &cmd, sizeof (cmd));
445}
446
447static
448void serve ()
449{
450 command cmd;
451 vector<rxvt_ptytty *> ptys;
452
453 while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command))
454 {
455 if (cmd.type == command::get)
456 {
457 // -> id ptyfd ttyfd
458 cmd.id = new rxvt_ptytty_unix;
459
460 if (cmd.id->get ())
461 {
462 write (sock_fd, &cmd.id, sizeof (cmd.id));
463 ptys.push_back (cmd.id);
464
465 rxvt_send_fd (sock_fd, cmd.id->pty);
466 rxvt_send_fd (sock_fd, cmd.id->tty);
467 }
468 else
469 {
470 delete cmd.id;
471 cmd.id = 0;
472 write (sock_fd, &cmd.id, sizeof (cmd.id));
473 }
474 }
475 else if (cmd.type == command::login)
476 {
477#if UTMP_SUPPORT
478 if (find (ptys.begin (), ptys.end (), cmd.id))
479 {
480 cmd.hostname[sizeof (cmd.hostname) - 1] = 0;
481 cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname);
482 }
483#endif
484 }
485 else if (cmd.type == command::destroy)
486 {
487 rxvt_ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id);
488
489 if (pty)
490 {
491 delete *pty;
492 ptys.erase (pty);
493 }
494 }
495 else
496 break;
497 }
498
499 // destroy all ptys
500 for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); )
501 delete *i;
502}
503
504void rxvt_ptytty_server ()
505{
506 int sv[2];
507
508 if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv))
509 rxvt_fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n");
510
511 pid = fork ();
512
513 if (pid < 0)
514 rxvt_fatal ("could not create pty/sessiondb helper process, aborting.\n");
515
516 if (pid)
517 {
518 // client, urxvt
519 sock_fd = sv[0];
520 close (sv[1]);
521 fcntl (sock_fd, F_SETFD, FD_CLOEXEC);
522 }
523 else
524 {
525 // server, pty-helper
526 sock_fd = sv[1];
527
528 for (int fd = 0; fd < 1023; fd++)
529 if (fd != sock_fd)
530 close (fd);
531
532 serve ();
533 _exit (EXIT_SUCCESS);
534 }
535}
536
537#endif
538
539// a "factory" *g*
540rxvt_ptytty *
541rxvt_new_ptytty ()
542{
543#if PTYTTY_HELPER
544 if (pid > 0)
545 // use helper process
546 return new rxvt_ptytty_proxy;
547 else
548#endif
549 return new rxvt_ptytty_unix;
550}
551
321/*----------------------- end-of-file (C source) -----------------------*/ 552/*----------------------- end-of-file (C source) -----------------------*/
553

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