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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 1.10 by pcg, Fri Apr 2 20:41:01 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
47# include <sys/ioctl.h> 52# include <sys/ioctl.h>
48#endif 53#endif
49#if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__) 54#if defined(PTYS_ARE_PTMX) && !defined(__CYGWIN32__)
50# include <sys/stropts.h> /* for I_PUSH */ 55# include <sys/stropts.h> /* for I_PUSH */
56#endif
57#ifdef HAVE_ISASTREAM
58# include <stropts.h>
51#endif 59#endif
52 60
53#ifdef DEBUG_TTY 61#ifdef DEBUG_TTY
54# define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr) 62# define D_TTY(x) fprintf x ; fputc('\n', stderr) ; fflush(stderr)
55#else 63#else
… …
64 * If successful, ttydev is set to the name of the slave device. 72 * 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 73 * fd_tty _may_ also be set to an open fd to the slave device
66 */ 74 */
67/* EXTPROTO */ 75/* EXTPROTO */
68int 76int
69rxvt_get_pty(int *fd_tty, const char **ttydev) 77rxvt_get_pty (int *fd_tty, const char **ttydev)
70{ 78{
71 int pfd; 79 int pfd;
72 80
73#ifdef PTYS_ARE_OPENPTY 81#ifdef PTYS_ARE_OPENPTY
74 82
75 char tty_name[sizeof "/dev/pts/????\0"]; 83 char tty_name[sizeof "/dev/pts/????\0"];
76 84
77 if (openpty(&pfd, fd_tty, tty_name, NULL, NULL) != -1) 85 if (openpty (&pfd, fd_tty, tty_name, NULL, NULL) != -1)
78 { 86 {
79 *ttydev = strdup(tty_name); 87 *ttydev = strdup (tty_name);
80 return pfd; 88 return pfd;
81 } 89 }
82#endif 90#endif
83 91
84#ifdef PTYS_ARE__GETPTY 92#ifdef PTYS_ARE__GETPTY
85 *ttydev = _getpty(&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); 93 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
86 if (*ttydev != NULL) 94 if (*ttydev != NULL)
87 return pfd; 95 return pfd;
88#endif 96#endif
89 97
90#ifdef PTYS_ARE_GETPTY 98#ifdef PTYS_ARE_GETPTY
91 99
92 char *ptydev; 100 char *ptydev;
93 101
94 while ((ptydev = getpty()) != NULL) 102 while ((ptydev = getpty ()) != NULL)
95 if ((pfd = open(ptydev, O_RDWR | O_NOCTTY, 0)) >= 0) 103 if ((pfd = open (ptydev, O_RDWR | O_NOCTTY, 0)) >= 0)
96 { 104 {
97 *ttydev = ptydev; 105 *ttydev = ptydev;
98 return pfd; 106 return pfd;
99 } 107 }
100#endif 108#endif
… …
102#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) 110#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
103# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX) 111# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX)
104 112
105 { 113 {
106# ifdef PTYS_ARE_GETPT 114# ifdef PTYS_ARE_GETPT
107 pfd = getpt(); 115 pfd = getpt ();
108# else 116# else
109 117
110 pfd = open("/dev/ptmx", O_RDWR | O_NOCTTY, 0); 118 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
111# endif 119# endif
112 120
113 if (pfd >= 0) 121 if (pfd >= 0)
114 { 122 {
115 if (grantpt(pfd) == 0 /* change slave permissions */ 123 if (grantpt (pfd) == 0 /* change slave permissions */
116 && unlockpt(pfd) == 0) 124 && unlockpt (pfd) == 0)
117 { /* slave now unlocked */ 125 { /* slave now unlocked */
118 *ttydev = ptsname(pfd); /* get slave's name */ 126 *ttydev = ptsname (pfd); /* get slave's name */
119 return pfd; 127 return pfd;
120 } 128 }
121 close(pfd); 129 close (pfd);
122 } 130 }
123 } 131 }
124# endif 132# endif
125#endif 133#endif
126 134
127#ifdef PTYS_ARE_PTC 135#ifdef PTYS_ARE_PTC
128 if ((pfd = open("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 136 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
129 { 137 {
130 *ttydev = ttyname(pfd); 138 *ttydev = ttyname (pfd);
131 return pfd; 139 return pfd;
132 } 140 }
133#endif 141#endif
134 142
135#ifdef PTYS_ARE_CLONE 143#ifdef PTYS_ARE_CLONE
136 if ((pfd = open("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) 144 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
137 { 145 {
138 *ttydev = ptsname(pfd); 146 *ttydev = ptsname (pfd);
139 return pfd; 147 return pfd;
140 } 148 }
141#endif 149#endif
142 150
143#ifdef PTYS_ARE_NUMERIC 151#ifdef PTYS_ARE_NUMERIC
… …
145 int idx; 153 int idx;
146 char *c1, *c2; 154 char *c1, *c2;
147 char pty_name[] = "/dev/ptyp???"; 155 char pty_name[] = "/dev/ptyp???";
148 char tty_name[] = "/dev/ttyp???"; 156 char tty_name[] = "/dev/ttyp???";
149 157
150 c1 = &(pty_name[sizeof(pty_name) - 4]); 158 c1 = & (pty_name[sizeof (pty_name) - 4]);
151 c2 = &(tty_name[sizeof(tty_name) - 4]); 159 c2 = & (tty_name[sizeof (tty_name) - 4]);
152 for (idx = 0; idx < 256; idx++) 160 for (idx = 0; idx < 256; idx++)
153 { 161 {
154 sprintf(c1, "%d", idx); 162 sprintf (c1, "%d", idx);
155 sprintf(c2, "%d", idx); 163 sprintf (c2, "%d", idx);
156 if (access(tty_name, F_OK) < 0) 164 if (access (tty_name, F_OK) < 0)
157 { 165 {
158 idx = 256; 166 idx = 256;
159 break; 167 break;
160 } 168 }
161 if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 169 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
162 { 170 {
163 if (access(tty_name, R_OK | W_OK) == 0) 171 if (access (tty_name, R_OK | W_OK) == 0)
164 { 172 {
165 *ttydev = strdup(tty_name); 173 *ttydev = strdup (tty_name);
166 return pfd; 174 return pfd;
167 } 175 }
168 close(pfd); 176 close (pfd);
169 } 177 }
170 } 178 }
171 } 179 }
172#endif 180#endif
173#ifdef PTYS_ARE_SEARCHED 181#ifdef PTYS_ARE_SEARCHED
… …
183# define PTYCHAR2 "0123456789abcdef" 191# define PTYCHAR2 "0123456789abcdef"
184# endif 192# endif
185 193
186 for (c1 = PTYCHAR1; *c1; c1++) 194 for (c1 = PTYCHAR1; *c1; c1++)
187 { 195 {
188 pty_name[(sizeof(pty_name) - 3)] = 196 pty_name[ (sizeof (pty_name) - 3)] =
189 tty_name[(sizeof(pty_name) - 3)] = *c1; 197 tty_name[ (sizeof (pty_name) - 3)] = *c1;
190 for (c2 = PTYCHAR2; *c2; c2++) 198 for (c2 = PTYCHAR2; *c2; c2++)
191 { 199 {
192 pty_name[(sizeof(pty_name) - 2)] = 200 pty_name[ (sizeof (pty_name) - 2)] =
193 tty_name[(sizeof(pty_name) - 2)] = *c2; 201 tty_name[ (sizeof (pty_name) - 2)] = *c2;
194 if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 202 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
195 { 203 {
196 if (access(tty_name, R_OK | W_OK) == 0) 204 if (access (tty_name, R_OK | W_OK) == 0)
197 { 205 {
198 *ttydev = strdup(tty_name); 206 *ttydev = strdup (tty_name);
199 return pfd; 207 return pfd;
200 } 208 }
201 close(pfd); 209 close (pfd);
202 } 210 }
203 } 211 }
204 } 212 }
205 } 213 }
206#endif 214#endif
… …
227rxvt_control_tty (int fd_tty, const char *ttydev) 235rxvt_control_tty (int fd_tty, const char *ttydev)
228{ 236{
229#ifndef __QNX__ 237#ifndef __QNX__
230 int fd; 238 int fd;
231 239
232 D_TTY ((stderr, "rxvt_control_tty(): pid: %d, tty fd: %d, dev: %s", getpid(), fd_tty, ttydev)); 240 D_TTY ((stderr, "rxvt_control_tty (): pid: %d, tty fd: %d, dev: %s", getpid (), fd_tty, ttydev));
233 /* ---------------------------------------- */ 241 /* ---------------------------------------- */
234# ifdef HAVE_SETSID 242# ifdef HAVE_SETSID
235 setsid (); 243 setsid ();
236# endif 244# endif
237# if defined(HAVE_SETPGID) 245# if defined(HAVE_SETPGID)
… …
241# endif 249# endif
242 /* ---------------------------------------- */ 250 /* ---------------------------------------- */
243# ifdef TIOCNOTTY 251# ifdef TIOCNOTTY
244 252
245 fd = open ("/dev/tty", O_RDWR | O_NOCTTY); 253 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
246 D_TTY ((stderr, "rxvt_control_tty(): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes")); 254 D_TTY ((stderr, "rxvt_control_tty (): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes"));
247 if (fd >= 0) 255 if (fd >= 0)
248 { 256 {
249 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */ 257 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */
250 close (fd); 258 close (fd);
251 } 259 }
252# endif 260# endif
253 /* ---------------------------------------- */ 261 /* ---------------------------------------- */
254 fd = open ("/dev/tty", O_RDWR | O_NOCTTY); 262 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)")); 263 D_TTY ((stderr, "rxvt_control_tty (): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)"));
256 if (fd >= 0) 264 if (fd >= 0)
257 close (fd); /* ouch: still have controlling tty */ 265 close (fd); /* ouch: still have controlling tty */
258 /* ---------------------------------------- */ 266 /* ---------------------------------------- */
259#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 267#if defined(PTYS_ARE_PTMX) && defined(I_PUSH)
260 /* 268 /*
261 * Push STREAMS modules: 269 * Push STREAMS modules:
262 * ptem: pseudo-terminal hardware emulation module. 270 * ptem: pseudo-terminal hardware emulation module.
263 * ldterm: standard terminal line discipline. 271 * ldterm: standard terminal line discipline.
264 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. 272 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
265 * 273 *
266 * After we push the STREAMS modules, the first open() on the slave side 274 * 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") 275 * (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 276 * 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 277 * 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 278 * 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 279 * 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 280 * 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 281 * 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 282 * close () - on the master side which causes a hang up to be sent
275 * through - Geoff Wing 283 * through - Geoff Wing
276 */ 284 */
277# ifdef HAVE_ISASTREAM 285# ifdef HAVE_ISASTREAM
278 if (isastream (fd_tty) == 1) 286 if (isastream (fd_tty) == 1)
279# endif 287# endif
280 { 288 {
281 D_TTY ((stderr, "rxvt_control_tty(): Pushing STREAMS modules")); 289 D_TTY ((stderr, "rxvt_control_tty (): Pushing STREAMS modules"));
282 ioctl (fd_tty, I_PUSH, "ptem"); 290 ioctl (fd_tty, I_PUSH, "ptem");
283 ioctl (fd_tty, I_PUSH, "ldterm"); 291 ioctl (fd_tty, I_PUSH, "ldterm");
284 ioctl (fd_tty, I_PUSH, "ttcompat"); 292 ioctl (fd_tty, I_PUSH, "ttcompat");
285 } 293 }
286#endif 294#endif
287 /* ---------------------------------------- */ 295 /* ---------------------------------------- */
288# if defined(TIOCSCTTY) 296# if defined(TIOCSCTTY)
289 fd = ioctl (fd_tty, TIOCSCTTY, NULL); 297 fd = ioctl (fd_tty, TIOCSCTTY, NULL);
290 D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSCTTY): %d", fd)); 298 D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSCTTY): %d", fd));
291# elif defined(TIOCSETCTTY) 299# elif defined(TIOCSETCTTY)
292 fd = ioctl (fd_tty, TIOCSETCTTY, NULL); 300 fd = ioctl (fd_tty, TIOCSETCTTY, NULL);
293 D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSETCTTY): %d", fd)); 301 D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSETCTTY): %d", fd));
294# else 302# else
295 fd = open (ttydev, O_RDWR); 303 fd = open (ttydev, O_RDWR);
296 D_TTY ((stderr, "rxvt_control_tty(): tty open%s", fd < 0 ? " failure" : "ed OK")); 304 D_TTY ((stderr, "rxvt_control_tty (): tty open%s", fd < 0 ? " failure" : "ed OK"));
297 if (fd >= 0) 305 if (fd >= 0)
298 close(fd); 306 close (fd);
299# endif 307# endif
300 /* ---------------------------------------- */ 308 /* ---------------------------------------- */
301 fd = open ("/dev/tty", O_WRONLY); 309 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)")); 310 D_TTY ((stderr, "rxvt_control_tty (): do we have controlling tty now: %s", fd < 0 ? "no (fatal)" : "yes (good)"));
303 if (fd < 0) 311 if (fd < 0)
304 return -1; /* fatal */ 312 return -1; /* fatal */
305 close (fd); 313 close (fd);
306 /* ---------------------------------------- */ 314 /* ---------------------------------------- */
307 D_TTY ((stderr, "rxvt_control_tty(): tcgetpgrp(): %d getpgrp(): %d", tcgetpgrp(fd_tty), getpgrp())); 315 D_TTY ((stderr, "rxvt_control_tty (): tcgetpgrp (): %d getpgrp (): %d", tcgetpgrp (fd_tty), getpgrp ()));
308 /* ---------------------------------------- */ 316 /* ---------------------------------------- */
309#endif /* ! __QNX__ */ 317#endif /* ! __QNX__ */
310 318
311 return 0; 319 return 0;
312} 320}

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