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Comparing rxvt-unicode/src/ptytty.C (file contents):
Revision 1.5 by pcg, Sat Jan 31 03:27:45 2004 UTC vs.
Revision 1.11 by pcg, Thu Apr 8 20:31:45 2004 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 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.
… …
24 25
25/* 26/*
26 * 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
27 */ 28 */
28 29
30#if 0
31#ifdef HAVE_GETPT
32# define _GNU_SOURCE
33#endif
34#endif
35
29#include <stdio.h> 36#include <cstdio>
30#ifdef HAVE_STDLIB_H 37#ifdef HAVE_STDLIB_H
31# include <stdlib.h> 38# include <cstdlib>
32#endif 39#endif
33#ifdef HAVE_SYS_TYPES_H 40#ifdef HAVE_SYS_TYPES_H
34# include <sys/types.h> 41# include <sys/types.h>
35#endif 42#endif
36#ifdef HAVE_UNISTD_H 43#ifdef HAVE_UNISTD_H
37# include <unistd.h> 44# include <unistd.h>
38#endif 45#endif
39#if defined(HAVE_STRING_H) 46#if defined(HAVE_STRING_H)
40# include <string.h> 47# include <cstring>
41#endif 48#endif
42#ifdef HAVE_FCNTL_H 49#ifdef HAVE_FCNTL_H
43# include <fcntl.h> 50# include <fcntl.h>
44#endif 51#endif
45#ifdef HAVE_SYS_IOCTL_H 52#ifdef HAVE_SYS_IOCTL_H
46# include <sys/ioctl.h> 53# include <sys/ioctl.h>
47#endif 54#endif
48#if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__) 55#if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__)
49# 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>
50#endif 60#endif
51 61
52#ifdef DEBUG_TTY 62#ifdef DEBUG_TTY
53# define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr) 63# define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr)
54#else 64#else
… …
63 * 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.
64 * 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
65 */ 75 */
66/* EXTPROTO */ 76/* EXTPROTO */
67int 77int
68rxvt_get_pty(int *fd_tty, const char **ttydev) 78rxvt_get_pty (int *fd_tty, const char **ttydev)
69{ 79{
70 int pfd; 80 int pfd;
71 81
72#ifdef PTYS_ARE_OPENPTY 82#ifdef PTYS_ARE_OPENPTY
73 83
74 char tty_name[sizeof "/dev/pts/????\0"]; 84 char tty_name[sizeof "/dev/pts/????\0"];
75 85
76 if (openpty(&pfd, fd_tty, tty_name, NULL, NULL) != -1) 86 if (openpty (&pfd, fd_tty, tty_name, NULL, NULL) != -1)
77 { 87 {
78 *ttydev = strdup(tty_name); 88 *ttydev = strdup (tty_name);
79 return pfd; 89 return pfd;
80 } 90 }
81#endif 91#endif
82 92
83#ifdef PTYS_ARE__GETPTY 93#ifdef PTYS_ARE__GETPTY
84 *ttydev = _getpty(&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); 94 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
85 if (*ttydev != NULL) 95 if (*ttydev != NULL)
86 return pfd; 96 return pfd;
87#endif 97#endif
88 98
89#ifdef PTYS_ARE_GETPTY 99#ifdef PTYS_ARE_GETPTY
90 100
91 char *ptydev; 101 char *ptydev;
92 102
93 while ((ptydev = getpty()) != NULL) 103 while ((ptydev = getpty ()) != NULL)
94 if ((pfd = open(ptydev, O_RDWR | O_NOCTTY, 0)) >= 0) 104 if ((pfd = open (ptydev, O_RDWR | O_NOCTTY, 0)) >= 0)
95 { 105 {
96 *ttydev = ptydev; 106 *ttydev = ptydev;
97 return pfd; 107 return pfd;
98 } 108 }
99#endif 109#endif
… …
101#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) 111#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
102# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX) 112# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX)
103 113
104 { 114 {
105# ifdef PTYS_ARE_GETPT 115# ifdef PTYS_ARE_GETPT
106 pfd = getpt(); 116 pfd = getpt ();
107# else 117# else
108 118
109 pfd = open("/dev/ptmx", O_RDWR | O_NOCTTY, 0); 119 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
110# endif 120# endif
111 121
112 if (pfd >= 0) 122 if (pfd >= 0)
113 { 123 {
114 if (grantpt(pfd) == 0 /* change slave permissions */ 124 if (grantpt (pfd) == 0 /* change slave permissions */
115 && unlockpt(pfd) == 0) 125 && unlockpt (pfd) == 0)
116 { /* slave now unlocked */ 126 { /* slave now unlocked */
117 *ttydev = ptsname(pfd); /* get slave's name */ 127 *ttydev = ptsname (pfd); /* get slave's name */
118 return pfd; 128 return pfd;
119 } 129 }
120 close(pfd); 130 close (pfd);
121 } 131 }
122 } 132 }
123# endif 133# endif
124#endif 134#endif
125 135
126#ifdef PTYS_ARE_PTC 136#ifdef PTYS_ARE_PTC
127 if ((pfd = open("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 137 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
128 { 138 {
129 *ttydev = ttyname(pfd); 139 *ttydev = ttyname (pfd);
130 return pfd; 140 return pfd;
131 } 141 }
132#endif 142#endif
133 143
134#ifdef PTYS_ARE_CLONE 144#ifdef PTYS_ARE_CLONE
135 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)
136 { 146 {
137 *ttydev = ptsname(pfd); 147 *ttydev = ptsname (pfd);
138 return pfd; 148 return pfd;
139 } 149 }
140#endif 150#endif
141 151
142#ifdef PTYS_ARE_NUMERIC 152#ifdef PTYS_ARE_NUMERIC
… …
144 int idx; 154 int idx;
145 char *c1, *c2; 155 char *c1, *c2;
146 char pty_name[] = "/dev/ptyp???"; 156 char pty_name[] = "/dev/ptyp???";
147 char tty_name[] = "/dev/ttyp???"; 157 char tty_name[] = "/dev/ttyp???";
148 158
149 c1 = &(pty_name[sizeof(pty_name) - 4]); 159 c1 = & (pty_name[sizeof (pty_name) - 4]);
150 c2 = &(tty_name[sizeof(tty_name) - 4]); 160 c2 = & (tty_name[sizeof (tty_name) - 4]);
151 for (idx = 0; idx < 256; idx++) 161 for (idx = 0; idx < 256; idx++)
152 { 162 {
153 sprintf(c1, "%d", idx); 163 sprintf (c1, "%d", idx);
154 sprintf(c2, "%d", idx); 164 sprintf (c2, "%d", idx);
155 if (access(tty_name, F_OK) < 0) 165 if (access (tty_name, F_OK) < 0)
156 { 166 {
157 idx = 256; 167 idx = 256;
158 break; 168 break;
159 } 169 }
160 if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 170 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
161 { 171 {
162 if (access(tty_name, R_OK | W_OK) == 0) 172 if (access (tty_name, R_OK | W_OK) == 0)
163 { 173 {
164 *ttydev = strdup(tty_name); 174 *ttydev = strdup (tty_name);
165 return pfd; 175 return pfd;
166 } 176 }
167 close(pfd); 177 close (pfd);
168 } 178 }
169 } 179 }
170 } 180 }
171#endif 181#endif
172#ifdef PTYS_ARE_SEARCHED 182#ifdef PTYS_ARE_SEARCHED
… …
182# define PTYCHAR2 "0123456789abcdef" 192# define PTYCHAR2 "0123456789abcdef"
183# endif 193# endif
184 194
185 for (c1 = PTYCHAR1; *c1; c1++) 195 for (c1 = PTYCHAR1; *c1; c1++)
186 { 196 {
187 pty_name[(sizeof(pty_name) - 3)] = 197 pty_name[ (sizeof (pty_name) - 3)] =
188 tty_name[(sizeof(pty_name) - 3)] = *c1; 198 tty_name[ (sizeof (pty_name) - 3)] = *c1;
189 for (c2 = PTYCHAR2; *c2; c2++) 199 for (c2 = PTYCHAR2; *c2; c2++)
190 { 200 {
191 pty_name[(sizeof(pty_name) - 2)] = 201 pty_name[ (sizeof (pty_name) - 2)] =
192 tty_name[(sizeof(pty_name) - 2)] = *c2; 202 tty_name[ (sizeof (pty_name) - 2)] = *c2;
193 if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 203 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
194 { 204 {
195 if (access(tty_name, R_OK | W_OK) == 0) 205 if (access (tty_name, R_OK | W_OK) == 0)
196 { 206 {
197 *ttydev = strdup(tty_name); 207 *ttydev = strdup (tty_name);
198 return pfd; 208 return pfd;
199 } 209 }
200 close(pfd); 210 close (pfd);
201 } 211 }
202 } 212 }
203 } 213 }
204 } 214 }
205#endif 215#endif
… …
226rxvt_control_tty (int fd_tty, const char *ttydev) 236rxvt_control_tty (int fd_tty, const char *ttydev)
227{ 237{
228#ifndef __QNX__ 238#ifndef __QNX__
229 int fd; 239 int fd;
230 240
231 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));
232 /* ---------------------------------------- */ 242 /* ---------------------------------------- */
233# ifdef HAVE_SETSID 243# ifdef HAVE_SETSID
234 setsid (); 244 setsid ();
235# endif 245# endif
236# if defined(HAVE_SETPGID) 246# if defined(HAVE_SETPGID)
… …
240# endif 250# endif
241 /* ---------------------------------------- */ 251 /* ---------------------------------------- */
242# ifdef TIOCNOTTY 252# ifdef TIOCNOTTY
243 253
244 fd = open ("/dev/tty", O_RDWR | O_NOCTTY); 254 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
245 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"));
246 if (fd >= 0) 256 if (fd >= 0)
247 { 257 {
248 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */ 258 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */
249 close (fd); 259 close (fd);
250 } 260 }
251# endif 261# endif
252 /* ---------------------------------------- */ 262 /* ---------------------------------------- */
253 fd = open ("/dev/tty", O_RDWR | O_NOCTTY); 263 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
254 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)"));
255 if (fd >= 0) 265 if (fd >= 0)
256 close (fd); /* ouch: still have controlling tty */ 266 close (fd); /* ouch: still have controlling tty */
257 /* ---------------------------------------- */ 267 /* ---------------------------------------- */
258#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 268#if defined(PTYS_ARE_PTMX) && defined(I_PUSH)
259 /* 269 /*
260 * Push STREAMS modules: 270 * Push STREAMS modules:
261 * ptem: pseudo-terminal hardware emulation module. 271 * ptem: pseudo-terminal hardware emulation module.
262 * ldterm: standard terminal line discipline. 272 * ldterm: standard terminal line discipline.
263 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. 273 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
264 * 274 *
265 * 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
266 * (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")
267 * should make the "ptem" (or "ldterm" depending upon either which OS 277 * should make the "ptem" (or "ldterm" depending upon either which OS
268 * 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
269 * controlling terminal. We must already have close()d the master side 279 * controlling terminal. We must already have close ()d the master side
270 * 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
271 * documentation is really unclear about whether it is any close() on 281 * documentation is really unclear about whether it is any close () on
272 * 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
273 * 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
274 * through - Geoff Wing 284 * through - Geoff Wing
275 */ 285 */
276# ifdef HAVE_ISASTREAM 286# ifdef HAVE_ISASTREAM
277 if (isastream (fd_tty) == 1) 287 if (isastream (fd_tty) == 1)
278# endif 288# endif
279 { 289 {
280 D_TTY ((stderr, "rxvt_control_tty(): Pushing STREAMS modules")); 290 D_TTY ((stderr, "rxvt_control_tty (): Pushing STREAMS modules"));
281 ioctl (fd_tty, I_PUSH, "ptem"); 291 ioctl (fd_tty, I_PUSH, "ptem");
282 ioctl (fd_tty, I_PUSH, "ldterm"); 292 ioctl (fd_tty, I_PUSH, "ldterm");
283 ioctl (fd_tty, I_PUSH, "ttcompat"); 293 ioctl (fd_tty, I_PUSH, "ttcompat");
284 } 294 }
285#endif 295#endif
286 /* ---------------------------------------- */ 296 /* ---------------------------------------- */
287# if defined(TIOCSCTTY) 297# if defined(TIOCSCTTY)
288 fd = ioctl (fd_tty, TIOCSCTTY, NULL); 298 fd = ioctl (fd_tty, TIOCSCTTY, NULL);
289 D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSCTTY): %d", fd)); 299 D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSCTTY): %d", fd));
290# elif defined(TIOCSETCTTY) 300# elif defined(TIOCSETCTTY)
291 fd = ioctl (fd_tty, TIOCSETCTTY, NULL); 301 fd = ioctl (fd_tty, TIOCSETCTTY, NULL);
292 D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSETCTTY): %d", fd)); 302 D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSETCTTY): %d", fd));
293# else 303# else
294 fd = open (ttydev, O_RDWR); 304 fd = open (ttydev, O_RDWR);
295 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"));
296 if (fd >= 0) 306 if (fd >= 0)
297 close(fd); 307 close (fd);
298# endif 308# endif
299 /* ---------------------------------------- */ 309 /* ---------------------------------------- */
300 fd = open ("/dev/tty", O_WRONLY); 310 fd = open ("/dev/tty", O_WRONLY);
301 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)"));
302 if (fd < 0) 312 if (fd < 0)
303 return -1; /* fatal */ 313 return -1; /* fatal */
304 close (fd); 314 close (fd);
305 /* ---------------------------------------- */ 315 /* ---------------------------------------- */
306 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 ()));
307 /* ---------------------------------------- */ 317 /* ---------------------------------------- */
308#endif /* ! __QNX__ */ 318#endif /* ! __QNX__ */
309 319
310 return 0; 320 return 0;
311} 321}

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