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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 1.12 by root, Fri Aug 13 03:36:57 2004 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.
… …
25 25
26/* 26/*
27 * Try to be self-contained except for the above autoconfig'd defines 27 * Try to be self-contained except for the above autoconfig'd defines
28 */ 28 */
29 29
30#if 0
31#ifdef HAVE_GETPT
32# define _GNU_SOURCE
33#endif
34#endif
35
30#include <stdio.h> 36#include <cstdio>
31#ifdef HAVE_STDLIB_H 37#ifdef HAVE_STDLIB_H
32# include <stdlib.h> 38# include <cstdlib>
33#endif 39#endif
34#ifdef HAVE_SYS_TYPES_H 40#ifdef HAVE_SYS_TYPES_H
35# include <sys/types.h> 41# include <sys/types.h>
36#endif 42#endif
37#ifdef HAVE_UNISTD_H 43#ifdef HAVE_UNISTD_H
38# include <unistd.h> 44# include <unistd.h>
39#endif 45#endif
40#if defined(HAVE_STRING_H) 46#if defined(HAVE_STRING_H)
41# include <string.h> 47# include <cstring>
42#endif 48#endif
43#ifdef HAVE_FCNTL_H 49#ifdef HAVE_FCNTL_H
44# include <fcntl.h> 50# include <fcntl.h>
45#endif 51#endif
46#ifdef HAVE_SYS_IOCTL_H 52#ifdef HAVE_SYS_IOCTL_H
47# include <sys/ioctl.h> 53# include <sys/ioctl.h>
48#endif 54#endif
49#if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__) 55#if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H)
50# include <sys/stropts.h> /* for I_PUSH */ 56# include <sys/stropts.h> /* for I_PUSH */
57#endif
58#ifdef HAVE_ISASTREAM
59# include <stropts.h>
51#endif 60#endif
52 61
53#ifdef DEBUG_TTY 62#ifdef DEBUG_TTY
54# define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr) 63# define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr)
55#else 64#else
… …
64 * If successful, ttydev is set to the name of the slave device. 73 * 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 74 * fd_tty _may_ also be set to an open fd to the slave device
66 */ 75 */
67/* EXTPROTO */ 76/* EXTPROTO */
68int 77int
69rxvt_get_pty(int *fd_tty, const char **ttydev) 78rxvt_get_pty (int *fd_tty, const char **ttydev)
70{ 79{
71 int pfd; 80 int pfd;
72 81
73#ifdef PTYS_ARE_OPENPTY 82#ifdef PTYS_ARE_OPENPTY
74 83
75 char tty_name[sizeof "/dev/pts/????\0"]; 84 char tty_name[sizeof "/dev/pts/????\0"];
76 85
77 if (openpty(&pfd, fd_tty, tty_name, NULL, NULL) != -1) 86 if (openpty (&pfd, fd_tty, tty_name, NULL, NULL) != -1)
78 { 87 {
79 *ttydev = strdup(tty_name); 88 *ttydev = strdup (tty_name);
80 return pfd; 89 return pfd;
81 } 90 }
82#endif 91#endif
83 92
84#ifdef PTYS_ARE__GETPTY 93#ifdef PTYS_ARE__GETPTY
85 *ttydev = _getpty(&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); 94 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
86 if (*ttydev != NULL) 95 if (*ttydev != NULL)
87 return pfd; 96 return pfd;
88#endif 97#endif
89 98
90#ifdef PTYS_ARE_GETPTY 99#ifdef PTYS_ARE_GETPTY
91 100
92 char *ptydev; 101 char *ptydev;
93 102
94 while ((ptydev = getpty()) != NULL) 103 while ((ptydev = getpty ()) != NULL)
95 if ((pfd = open(ptydev, O_RDWR | O_NOCTTY, 0)) >= 0) 104 if ((pfd = open (ptydev, O_RDWR | O_NOCTTY, 0)) >= 0)
96 { 105 {
97 *ttydev = ptydev; 106 *ttydev = ptydev;
98 return pfd; 107 return pfd;
99 } 108 }
100#endif 109#endif
… …
102#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) 111#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
103# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX) 112# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX)
104 113
105 { 114 {
106# ifdef PTYS_ARE_GETPT 115# ifdef PTYS_ARE_GETPT
107 pfd = getpt(); 116 pfd = getpt ();
108# else 117# else
109 118
110 pfd = open("/dev/ptmx", O_RDWR | O_NOCTTY, 0); 119 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
111# endif 120# endif
112 121
113 if (pfd >= 0) 122 if (pfd >= 0)
114 { 123 {
115 if (grantpt(pfd) == 0 /* change slave permissions */ 124 if (grantpt (pfd) == 0 /* change slave permissions */
116 && unlockpt(pfd) == 0) 125 && unlockpt (pfd) == 0)
117 { /* slave now unlocked */ 126 { /* slave now unlocked */
118 *ttydev = ptsname(pfd); /* get slave's name */ 127 *ttydev = ptsname (pfd); /* get slave's name */
119 return pfd; 128 return pfd;
120 } 129 }
121 close(pfd); 130 close (pfd);
122 } 131 }
123 } 132 }
124# endif 133# endif
125#endif 134#endif
126 135
127#ifdef PTYS_ARE_PTC 136#ifdef PTYS_ARE_PTC
128 if ((pfd = open("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 137 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
129 { 138 {
130 *ttydev = ttyname(pfd); 139 *ttydev = ttyname (pfd);
131 return pfd; 140 return pfd;
132 } 141 }
133#endif 142#endif
134 143
135#ifdef PTYS_ARE_CLONE 144#ifdef PTYS_ARE_CLONE
136 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)
137 { 146 {
138 *ttydev = ptsname(pfd); 147 *ttydev = ptsname (pfd);
139 return pfd; 148 return pfd;
140 } 149 }
141#endif 150#endif
142 151
143#ifdef PTYS_ARE_NUMERIC 152#ifdef PTYS_ARE_NUMERIC
… …
145 int idx; 154 int idx;
146 char *c1, *c2; 155 char *c1, *c2;
147 char pty_name[] = "/dev/ptyp???"; 156 char pty_name[] = "/dev/ptyp???";
148 char tty_name[] = "/dev/ttyp???"; 157 char tty_name[] = "/dev/ttyp???";
149 158
150 c1 = &(pty_name[sizeof(pty_name) - 4]); 159 c1 = & (pty_name[sizeof (pty_name) - 4]);
151 c2 = &(tty_name[sizeof(tty_name) - 4]); 160 c2 = & (tty_name[sizeof (tty_name) - 4]);
152 for (idx = 0; idx < 256; idx++) 161 for (idx = 0; idx < 256; idx++)
153 { 162 {
154 sprintf(c1, "%d", idx); 163 sprintf (c1, "%d", idx);
155 sprintf(c2, "%d", idx); 164 sprintf (c2, "%d", idx);
156 if (access(tty_name, F_OK) < 0) 165 if (access (tty_name, F_OK) < 0)
157 { 166 {
158 idx = 256; 167 idx = 256;
159 break; 168 break;
160 } 169 }
161 if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 170 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
162 { 171 {
163 if (access(tty_name, R_OK | W_OK) == 0) 172 if (access (tty_name, R_OK | W_OK) == 0)
164 { 173 {
165 *ttydev = strdup(tty_name); 174 *ttydev = strdup (tty_name);
166 return pfd; 175 return pfd;
167 } 176 }
168 close(pfd); 177 close (pfd);
169 } 178 }
170 } 179 }
171 } 180 }
172#endif 181#endif
173#ifdef PTYS_ARE_SEARCHED 182#ifdef PTYS_ARE_SEARCHED
… …
183# define PTYCHAR2 "0123456789abcdef" 192# define PTYCHAR2 "0123456789abcdef"
184# endif 193# endif
185 194
186 for (c1 = PTYCHAR1; *c1; c1++) 195 for (c1 = PTYCHAR1; *c1; c1++)
187 { 196 {
188 pty_name[(sizeof(pty_name) - 3)] = 197 pty_name[ (sizeof (pty_name) - 3)] =
189 tty_name[(sizeof(pty_name) - 3)] = *c1; 198 tty_name[ (sizeof (pty_name) - 3)] = *c1;
190 for (c2 = PTYCHAR2; *c2; c2++) 199 for (c2 = PTYCHAR2; *c2; c2++)
191 { 200 {
192 pty_name[(sizeof(pty_name) - 2)] = 201 pty_name[ (sizeof (pty_name) - 2)] =
193 tty_name[(sizeof(pty_name) - 2)] = *c2; 202 tty_name[ (sizeof (pty_name) - 2)] = *c2;
194 if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 203 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
195 { 204 {
196 if (access(tty_name, R_OK | W_OK) == 0) 205 if (access (tty_name, R_OK | W_OK) == 0)
197 { 206 {
198 *ttydev = strdup(tty_name); 207 *ttydev = strdup (tty_name);
199 return pfd; 208 return pfd;
200 } 209 }
201 close(pfd); 210 close (pfd);
202 } 211 }
203 } 212 }
204 } 213 }
205 } 214 }
206#endif 215#endif
… …
227rxvt_control_tty (int fd_tty, const char *ttydev) 236rxvt_control_tty (int fd_tty, const char *ttydev)
228{ 237{
229#ifndef __QNX__ 238#ifndef __QNX__
230 int fd; 239 int fd;
231 240
232 D_TTY ((stderr, "rxvt_control_tty(): pid: %d, tty fd: %d, dev: %s", getpid(), fd_tty, ttydev)); 241 D_TTY ((stderr, "rxvt_control_tty (): pid: %d, tty fd: %d, dev: %s", getpid (), fd_tty, ttydev));
233 /* ---------------------------------------- */ 242 /* ---------------------------------------- */
234# ifdef HAVE_SETSID 243# ifdef HAVE_SETSID
235 setsid (); 244 setsid ();
236# endif 245# endif
237# if defined(HAVE_SETPGID) 246# if defined(HAVE_SETPGID)
… …
241# endif 250# endif
242 /* ---------------------------------------- */ 251 /* ---------------------------------------- */
243# ifdef TIOCNOTTY 252# ifdef TIOCNOTTY
244 253
245 fd = open ("/dev/tty", O_RDWR | O_NOCTTY); 254 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
246 D_TTY ((stderr, "rxvt_control_tty(): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes")); 255 D_TTY ((stderr, "rxvt_control_tty (): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes"));
247 if (fd >= 0) 256 if (fd >= 0)
248 { 257 {
249 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */ 258 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */
250 close (fd); 259 close (fd);
251 } 260 }
252# endif 261# endif
253 /* ---------------------------------------- */ 262 /* ---------------------------------------- */
254 fd = open ("/dev/tty", O_RDWR | O_NOCTTY); 263 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)")); 264 D_TTY ((stderr, "rxvt_control_tty (): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)"));
256 if (fd >= 0) 265 if (fd >= 0)
257 close (fd); /* ouch: still have controlling tty */ 266 close (fd); /* ouch: still have controlling tty */
258 /* ---------------------------------------- */ 267 /* ---------------------------------------- */
259#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 268#if defined(PTYS_ARE_PTMX) && defined(I_PUSH)
260 /* 269 /*
261 * Push STREAMS modules: 270 * Push STREAMS modules:
262 * ptem: pseudo-terminal hardware emulation module. 271 * ptem: pseudo-terminal hardware emulation module.
263 * ldterm: standard terminal line discipline. 272 * ldterm: standard terminal line discipline.
264 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. 273 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
265 * 274 *
266 * After we push the STREAMS modules, the first open() on the slave side 275 * 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") 276 * (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 277 * 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 278 * 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 279 * 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 280 * 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 281 * 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 282 * 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 283 * close () - on the master side which causes a hang up to be sent
275 * through - Geoff Wing 284 * through - Geoff Wing
276 */ 285 */
277# ifdef HAVE_ISASTREAM 286# ifdef HAVE_ISASTREAM
278 if (isastream (fd_tty) == 1) 287 if (isastream (fd_tty) == 1)
279# endif 288# endif
280 { 289 {
281 D_TTY ((stderr, "rxvt_control_tty(): Pushing STREAMS modules")); 290 D_TTY ((stderr, "rxvt_control_tty (): Pushing STREAMS modules"));
282 ioctl (fd_tty, I_PUSH, "ptem"); 291 ioctl (fd_tty, I_PUSH, "ptem");
283 ioctl (fd_tty, I_PUSH, "ldterm"); 292 ioctl (fd_tty, I_PUSH, "ldterm");
284 ioctl (fd_tty, I_PUSH, "ttcompat"); 293 ioctl (fd_tty, I_PUSH, "ttcompat");
285 } 294 }
286#endif 295#endif
287 /* ---------------------------------------- */ 296 /* ---------------------------------------- */
288# if defined(TIOCSCTTY) 297# if defined(TIOCSCTTY)
289 fd = ioctl (fd_tty, TIOCSCTTY, NULL); 298 fd = ioctl (fd_tty, TIOCSCTTY, NULL);
290 D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSCTTY): %d", fd)); 299 D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSCTTY): %d", fd));
291# elif defined(TIOCSETCTTY) 300# elif defined(TIOCSETCTTY)
292 fd = ioctl (fd_tty, TIOCSETCTTY, NULL); 301 fd = ioctl (fd_tty, TIOCSETCTTY, NULL);
293 D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSETCTTY): %d", fd)); 302 D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSETCTTY): %d", fd));
294# else 303# else
295 fd = open (ttydev, O_RDWR); 304 fd = open (ttydev, O_RDWR);
296 D_TTY ((stderr, "rxvt_control_tty(): tty open%s", fd < 0 ? " failure" : "ed OK")); 305 D_TTY ((stderr, "rxvt_control_tty (): tty open%s", fd < 0 ? " failure" : "ed OK"));
297 if (fd >= 0) 306 if (fd >= 0)
298 close(fd); 307 close (fd);
299# endif 308# endif
300 /* ---------------------------------------- */ 309 /* ---------------------------------------- */
301 fd = open ("/dev/tty", O_WRONLY); 310 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)")); 311 D_TTY ((stderr, "rxvt_control_tty (): do we have controlling tty now: %s", fd < 0 ? "no (fatal)" : "yes (good)"));
303 if (fd < 0) 312 if (fd < 0)
304 return -1; /* fatal */ 313 return -1; /* fatal */
305 close (fd); 314 close (fd);
306 /* ---------------------------------------- */ 315 /* ---------------------------------------- */
307 D_TTY ((stderr, "rxvt_control_tty(): tcgetpgrp(): %d getpgrp(): %d", tcgetpgrp(fd_tty), getpgrp())); 316 D_TTY ((stderr, "rxvt_control_tty (): tcgetpgrp (): %d getpgrp (): %d", tcgetpgrp (fd_tty), getpgrp ()));
308 /* ---------------------------------------- */ 317 /* ---------------------------------------- */
309#endif /* ! __QNX__ */ 318#endif /* ! __QNX__ */
310 319
311 return 0; 320 return 0;
312} 321}

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