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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 1.8 by pcg, Sat Mar 6 00:05:01 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>
8 * 7 *
9 * This program is free software; you can redistribute it and/or modify 8 * This program is free software; you can redistribute it and/or modify
… …
25 24
26/* 25/*
27 * Try to be self-contained except for the above autoconfig'd defines 26 * Try to be self-contained except for the above autoconfig'd defines
28 */ 27 */
29 28
29#if 0
30#ifdef HAVE_GETPT
31# define _GNU_SOURCE
32#endif
33#endif
34
30#include <stdio.h> 35#include <cstdio>
31#ifdef HAVE_STDLIB_H 36#ifdef HAVE_STDLIB_H
32# include <stdlib.h> 37# include <cstdlib>
33#endif 38#endif
34#ifdef HAVE_SYS_TYPES_H 39#ifdef HAVE_SYS_TYPES_H
35# include <sys/types.h> 40# include <sys/types.h>
36#endif 41#endif
37#ifdef HAVE_UNISTD_H 42#ifdef HAVE_UNISTD_H
38# include <unistd.h> 43# include <unistd.h>
39#endif 44#endif
40#if defined(HAVE_STRING_H) 45#if defined(HAVE_STRING_H)
41# include <string.h> 46# include <cstring>
42#endif 47#endif
43#ifdef HAVE_FCNTL_H 48#ifdef HAVE_FCNTL_H
44# include <fcntl.h> 49# include <fcntl.h>
45#endif 50#endif
46#ifdef HAVE_SYS_IOCTL_H 51#ifdef HAVE_SYS_IOCTL_H
… …
64 * If successful, ttydev is set to the name of the slave device. 69 * 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 70 * fd_tty _may_ also be set to an open fd to the slave device
66 */ 71 */
67/* EXTPROTO */ 72/* EXTPROTO */
68int 73int
69rxvt_get_pty(int *fd_tty, const char **ttydev) 74rxvt_get_pty (int *fd_tty, const char **ttydev)
70{ 75{
71 int pfd; 76 int pfd;
72 77
73#ifdef PTYS_ARE_OPENPTY 78#ifdef PTYS_ARE_OPENPTY
74 79
75 char tty_name[sizeof "/dev/pts/????\0"]; 80 char tty_name[sizeof "/dev/pts/????\0"];
76 81
77 if (openpty(&pfd, fd_tty, tty_name, NULL, NULL) != -1) 82 if (openpty (&pfd, fd_tty, tty_name, NULL, NULL) != -1)
78 { 83 {
79 *ttydev = strdup(tty_name); 84 *ttydev = strdup (tty_name);
80 return pfd; 85 return pfd;
81 } 86 }
82#endif 87#endif
83 88
84#ifdef PTYS_ARE__GETPTY 89#ifdef PTYS_ARE__GETPTY
85 *ttydev = _getpty(&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); 90 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
86 if (*ttydev != NULL) 91 if (*ttydev != NULL)
87 return pfd; 92 return pfd;
88#endif 93#endif
89 94
90#ifdef PTYS_ARE_GETPTY 95#ifdef PTYS_ARE_GETPTY
91 96
92 char *ptydev; 97 char *ptydev;
93 98
94 while ((ptydev = getpty()) != NULL) 99 while ((ptydev = getpty ()) != NULL)
95 if ((pfd = open(ptydev, O_RDWR | O_NOCTTY, 0)) >= 0) 100 if ((pfd = open (ptydev, O_RDWR | O_NOCTTY, 0)) >= 0)
96 { 101 {
97 *ttydev = ptydev; 102 *ttydev = ptydev;
98 return pfd; 103 return pfd;
99 } 104 }
100#endif 105#endif
… …
102#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) 107#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
103# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX) 108# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX)
104 109
105 { 110 {
106# ifdef PTYS_ARE_GETPT 111# ifdef PTYS_ARE_GETPT
107 pfd = getpt(); 112 pfd = getpt ();
108# else 113# else
109 114
110 pfd = open("/dev/ptmx", O_RDWR | O_NOCTTY, 0); 115 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
111# endif 116# endif
112 117
113 if (pfd >= 0) 118 if (pfd >= 0)
114 { 119 {
115 if (grantpt(pfd) == 0 /* change slave permissions */ 120 if (grantpt (pfd) == 0 /* change slave permissions */
116 && unlockpt(pfd) == 0) 121 && unlockpt (pfd) == 0)
117 { /* slave now unlocked */ 122 { /* slave now unlocked */
118 *ttydev = ptsname(pfd); /* get slave's name */ 123 *ttydev = ptsname (pfd); /* get slave's name */
119 return pfd; 124 return pfd;
120 } 125 }
121 close(pfd); 126 close (pfd);
122 } 127 }
123 } 128 }
124# endif 129# endif
125#endif 130#endif
126 131
127#ifdef PTYS_ARE_PTC 132#ifdef PTYS_ARE_PTC
128 if ((pfd = open("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 133 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
129 { 134 {
130 *ttydev = ttyname(pfd); 135 *ttydev = ttyname (pfd);
131 return pfd; 136 return pfd;
132 } 137 }
133#endif 138#endif
134 139
135#ifdef PTYS_ARE_CLONE 140#ifdef PTYS_ARE_CLONE
136 if ((pfd = open("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) 141 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
137 { 142 {
138 *ttydev = ptsname(pfd); 143 *ttydev = ptsname (pfd);
139 return pfd; 144 return pfd;
140 } 145 }
141#endif 146#endif
142 147
143#ifdef PTYS_ARE_NUMERIC 148#ifdef PTYS_ARE_NUMERIC
… …
145 int idx; 150 int idx;
146 char *c1, *c2; 151 char *c1, *c2;
147 char pty_name[] = "/dev/ptyp???"; 152 char pty_name[] = "/dev/ptyp???";
148 char tty_name[] = "/dev/ttyp???"; 153 char tty_name[] = "/dev/ttyp???";
149 154
150 c1 = &(pty_name[sizeof(pty_name) - 4]); 155 c1 = & (pty_name[sizeof (pty_name) - 4]);
151 c2 = &(tty_name[sizeof(tty_name) - 4]); 156 c2 = & (tty_name[sizeof (tty_name) - 4]);
152 for (idx = 0; idx < 256; idx++) 157 for (idx = 0; idx < 256; idx++)
153 { 158 {
154 sprintf(c1, "%d", idx); 159 sprintf (c1, "%d", idx);
155 sprintf(c2, "%d", idx); 160 sprintf (c2, "%d", idx);
156 if (access(tty_name, F_OK) < 0) 161 if (access (tty_name, F_OK) < 0)
157 { 162 {
158 idx = 256; 163 idx = 256;
159 break; 164 break;
160 } 165 }
161 if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 166 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
162 { 167 {
163 if (access(tty_name, R_OK | W_OK) == 0) 168 if (access (tty_name, R_OK | W_OK) == 0)
164 { 169 {
165 *ttydev = strdup(tty_name); 170 *ttydev = strdup (tty_name);
166 return pfd; 171 return pfd;
167 } 172 }
168 close(pfd); 173 close (pfd);
169 } 174 }
170 } 175 }
171 } 176 }
172#endif 177#endif
173#ifdef PTYS_ARE_SEARCHED 178#ifdef PTYS_ARE_SEARCHED
… …
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 }
201 close(pfd); 206 close (pfd);
202 } 207 }
203 } 208 }
204 } 209 }
205 } 210 }
206#endif 211#endif
… …
227rxvt_control_tty (int fd_tty, const char *ttydev) 232rxvt_control_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)); 237 D_TTY ((stderr, "rxvt_control_tty (): pid: %d, tty fd: %d, dev: %s", getpid (), fd_tty, ttydev));
233 /* ---------------------------------------- */ 238 /* ---------------------------------------- */
234# ifdef HAVE_SETSID 239# ifdef HAVE_SETSID
235 setsid (); 240 setsid ();
236# endif 241# endif
237# if defined(HAVE_SETPGID) 242# if defined(HAVE_SETPGID)
… …
241# endif 246# endif
242 /* ---------------------------------------- */ 247 /* ---------------------------------------- */
243# ifdef TIOCNOTTY 248# ifdef TIOCNOTTY
244 249
245 fd = open ("/dev/tty", O_RDWR | O_NOCTTY); 250 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
246 D_TTY ((stderr, "rxvt_control_tty(): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes")); 251 D_TTY ((stderr, "rxvt_control_tty (): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes"));
247 if (fd >= 0) 252 if (fd >= 0)
248 { 253 {
249 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */ 254 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */
250 close (fd); 255 close (fd);
251 } 256 }
252# endif 257# endif
253 /* ---------------------------------------- */ 258 /* ---------------------------------------- */
254 fd = open ("/dev/tty", O_RDWR | O_NOCTTY); 259 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)")); 260 D_TTY ((stderr, "rxvt_control_tty (): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)"));
256 if (fd >= 0) 261 if (fd >= 0)
257 close (fd); /* ouch: still have controlling tty */ 262 close (fd); /* ouch: still have controlling tty */
258 /* ---------------------------------------- */ 263 /* ---------------------------------------- */
259#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 264#if defined(PTYS_ARE_PTMX) && defined(I_PUSH)
260 /* 265 /*
261 * Push STREAMS modules: 266 * Push STREAMS modules:
262 * ptem: pseudo-terminal hardware emulation module. 267 * ptem: pseudo-terminal hardware emulation module.
263 * ldterm: standard terminal line discipline. 268 * ldterm: standard terminal line discipline.
264 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. 269 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
265 * 270 *
266 * After we push the STREAMS modules, the first open() on the slave side 271 * 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") 272 * (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 273 * 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 274 * 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 275 * 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 276 * 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 277 * 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 278 * 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 279 * close () - on the master side which causes a hang up to be sent
275 * through - Geoff Wing 280 * through - Geoff Wing
276 */ 281 */
277# ifdef HAVE_ISASTREAM 282# ifdef HAVE_ISASTREAM
278 if (isastream (fd_tty) == 1) 283 if (isastream (fd_tty) == 1)
279# endif 284# endif
280 { 285 {
281 D_TTY ((stderr, "rxvt_control_tty(): Pushing STREAMS modules")); 286 D_TTY ((stderr, "rxvt_control_tty (): Pushing STREAMS modules"));
282 ioctl (fd_tty, I_PUSH, "ptem"); 287 ioctl (fd_tty, I_PUSH, "ptem");
283 ioctl (fd_tty, I_PUSH, "ldterm"); 288 ioctl (fd_tty, I_PUSH, "ldterm");
284 ioctl (fd_tty, I_PUSH, "ttcompat"); 289 ioctl (fd_tty, I_PUSH, "ttcompat");
285 } 290 }
286#endif 291#endif
287 /* ---------------------------------------- */ 292 /* ---------------------------------------- */
288# if defined(TIOCSCTTY) 293# if defined(TIOCSCTTY)
289 fd = ioctl (fd_tty, TIOCSCTTY, NULL); 294 fd = ioctl (fd_tty, TIOCSCTTY, NULL);
290 D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSCTTY): %d", fd)); 295 D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSCTTY): %d", fd));
291# elif defined(TIOCSETCTTY) 296# elif defined(TIOCSETCTTY)
292 fd = ioctl (fd_tty, TIOCSETCTTY, NULL); 297 fd = ioctl (fd_tty, TIOCSETCTTY, NULL);
293 D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSETCTTY): %d", fd)); 298 D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSETCTTY): %d", fd));
294# else 299# else
295 fd = open (ttydev, O_RDWR); 300 fd = open (ttydev, O_RDWR);
296 D_TTY ((stderr, "rxvt_control_tty(): tty open%s", fd < 0 ? " failure" : "ed OK")); 301 D_TTY ((stderr, "rxvt_control_tty (): tty open%s", fd < 0 ? " failure" : "ed OK"));
297 if (fd >= 0) 302 if (fd >= 0)
298 close(fd); 303 close (fd);
299# endif 304# endif
300 /* ---------------------------------------- */ 305 /* ---------------------------------------- */
301 fd = open ("/dev/tty", O_WRONLY); 306 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)")); 307 D_TTY ((stderr, "rxvt_control_tty (): do we have controlling tty now: %s", fd < 0 ? "no (fatal)" : "yes (good)"));
303 if (fd < 0) 308 if (fd < 0)
304 return -1; /* fatal */ 309 return -1; /* fatal */
305 close (fd); 310 close (fd);
306 /* ---------------------------------------- */ 311 /* ---------------------------------------- */
307 D_TTY ((stderr, "rxvt_control_tty(): tcgetpgrp(): %d getpgrp(): %d", tcgetpgrp(fd_tty), getpgrp())); 312 D_TTY ((stderr, "rxvt_control_tty (): tcgetpgrp (): %d getpgrp (): %d", tcgetpgrp (fd_tty), getpgrp ()));
308 /* ---------------------------------------- */ 313 /* ---------------------------------------- */
309#endif /* ! __QNX__ */ 314#endif /* ! __QNX__ */
310 315
311 return 0; 316 return 0;
312} 317}

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