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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 1.6 by pcg, Fri Feb 13 12:16:21 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
… …
64 * If successful, ttydev is set to the name of the slave device. 63 * 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 64 * fd_tty _may_ also be set to an open fd to the slave device
66 */ 65 */
67/* EXTPROTO */ 66/* EXTPROTO */
68int 67int
69rxvt_get_pty(int *fd_tty, const char **ttydev) 68rxvt_get_pty (int *fd_tty, const char **ttydev)
70{ 69{
71 int pfd; 70 int pfd;
72 71
73#ifdef PTYS_ARE_OPENPTY 72#ifdef PTYS_ARE_OPENPTY
74 73
75 char tty_name[sizeof "/dev/pts/????\0"]; 74 char tty_name[sizeof "/dev/pts/????\0"];
76 75
77 if (openpty(&pfd, fd_tty, tty_name, NULL, NULL) != -1) 76 if (openpty (&pfd, fd_tty, tty_name, NULL, NULL) != -1)
78 { 77 {
79 *ttydev = strdup(tty_name); 78 *ttydev = strdup (tty_name);
80 return pfd; 79 return pfd;
81 } 80 }
82#endif 81#endif
83 82
84#ifdef PTYS_ARE__GETPTY 83#ifdef PTYS_ARE__GETPTY
85 *ttydev = _getpty(&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); 84 *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0);
86 if (*ttydev != NULL) 85 if (*ttydev != NULL)
87 return pfd; 86 return pfd;
88#endif 87#endif
89 88
90#ifdef PTYS_ARE_GETPTY 89#ifdef PTYS_ARE_GETPTY
91 90
92 char *ptydev; 91 char *ptydev;
93 92
94 while ((ptydev = getpty()) != NULL) 93 while ((ptydev = getpty ()) != NULL)
95 if ((pfd = open(ptydev, O_RDWR | O_NOCTTY, 0)) >= 0) 94 if ((pfd = open (ptydev, O_RDWR | O_NOCTTY, 0)) >= 0)
96 { 95 {
97 *ttydev = ptydev; 96 *ttydev = ptydev;
98 return pfd; 97 return pfd;
99 } 98 }
100#endif 99#endif
… …
102#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) 101#if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT)
103# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX) 102# if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_PTMX)
104 103
105 { 104 {
106# ifdef PTYS_ARE_GETPT 105# ifdef PTYS_ARE_GETPT
107 pfd = getpt(); 106 pfd = getpt ();
108# else 107# else
109 108
110 pfd = open("/dev/ptmx", O_RDWR | O_NOCTTY, 0); 109 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
111# endif 110# endif
112 111
113 if (pfd >= 0) 112 if (pfd >= 0)
114 { 113 {
115 if (grantpt(pfd) == 0 /* change slave permissions */ 114 if (grantpt (pfd) == 0 /* change slave permissions */
116 && unlockpt(pfd) == 0) 115 && unlockpt (pfd) == 0)
117 { /* slave now unlocked */ 116 { /* slave now unlocked */
118 *ttydev = ptsname(pfd); /* get slave's name */ 117 *ttydev = ptsname (pfd); /* get slave's name */
119 return pfd; 118 return pfd;
120 } 119 }
121 close(pfd); 120 close (pfd);
122 } 121 }
123 } 122 }
124# endif 123# endif
125#endif 124#endif
126 125
127#ifdef PTYS_ARE_PTC 126#ifdef PTYS_ARE_PTC
128 if ((pfd = open("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) 127 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
129 { 128 {
130 *ttydev = ttyname(pfd); 129 *ttydev = ttyname (pfd);
131 return pfd; 130 return pfd;
132 } 131 }
133#endif 132#endif
134 133
135#ifdef PTYS_ARE_CLONE 134#ifdef PTYS_ARE_CLONE
136 if ((pfd = open("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) 135 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
137 { 136 {
138 *ttydev = ptsname(pfd); 137 *ttydev = ptsname (pfd);
139 return pfd; 138 return pfd;
140 } 139 }
141#endif 140#endif
142 141
143#ifdef PTYS_ARE_NUMERIC 142#ifdef PTYS_ARE_NUMERIC
… …
145 int idx; 144 int idx;
146 char *c1, *c2; 145 char *c1, *c2;
147 char pty_name[] = "/dev/ptyp???"; 146 char pty_name[] = "/dev/ptyp???";
148 char tty_name[] = "/dev/ttyp???"; 147 char tty_name[] = "/dev/ttyp???";
149 148
150 c1 = &(pty_name[sizeof(pty_name) - 4]); 149 c1 = & (pty_name[sizeof (pty_name) - 4]);
151 c2 = &(tty_name[sizeof(tty_name) - 4]); 150 c2 = & (tty_name[sizeof (tty_name) - 4]);
152 for (idx = 0; idx < 256; idx++) 151 for (idx = 0; idx < 256; idx++)
153 { 152 {
154 sprintf(c1, "%d", idx); 153 sprintf (c1, "%d", idx);
155 sprintf(c2, "%d", idx); 154 sprintf (c2, "%d", idx);
156 if (access(tty_name, F_OK) < 0) 155 if (access (tty_name, F_OK) < 0)
157 { 156 {
158 idx = 256; 157 idx = 256;
159 break; 158 break;
160 } 159 }
161 if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 160 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
162 { 161 {
163 if (access(tty_name, R_OK | W_OK) == 0) 162 if (access (tty_name, R_OK | W_OK) == 0)
164 { 163 {
165 *ttydev = strdup(tty_name); 164 *ttydev = strdup (tty_name);
166 return pfd; 165 return pfd;
167 } 166 }
168 close(pfd); 167 close (pfd);
169 } 168 }
170 } 169 }
171 } 170 }
172#endif 171#endif
173#ifdef PTYS_ARE_SEARCHED 172#ifdef PTYS_ARE_SEARCHED
… …
183# define PTYCHAR2 "0123456789abcdef" 182# define PTYCHAR2 "0123456789abcdef"
184# endif 183# endif
185 184
186 for (c1 = PTYCHAR1; *c1; c1++) 185 for (c1 = PTYCHAR1; *c1; c1++)
187 { 186 {
188 pty_name[(sizeof(pty_name) - 3)] = 187 pty_name[ (sizeof (pty_name) - 3)] =
189 tty_name[(sizeof(pty_name) - 3)] = *c1; 188 tty_name[ (sizeof (pty_name) - 3)] = *c1;
190 for (c2 = PTYCHAR2; *c2; c2++) 189 for (c2 = PTYCHAR2; *c2; c2++)
191 { 190 {
192 pty_name[(sizeof(pty_name) - 2)] = 191 pty_name[ (sizeof (pty_name) - 2)] =
193 tty_name[(sizeof(pty_name) - 2)] = *c2; 192 tty_name[ (sizeof (pty_name) - 2)] = *c2;
194 if ((pfd = open(pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) 193 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0)
195 { 194 {
196 if (access(tty_name, R_OK | W_OK) == 0) 195 if (access (tty_name, R_OK | W_OK) == 0)
197 { 196 {
198 *ttydev = strdup(tty_name); 197 *ttydev = strdup (tty_name);
199 return pfd; 198 return pfd;
200 } 199 }
201 close(pfd); 200 close (pfd);
202 } 201 }
203 } 202 }
204 } 203 }
205 } 204 }
206#endif 205#endif
… …
227rxvt_control_tty (int fd_tty, const char *ttydev) 226rxvt_control_tty (int fd_tty, const char *ttydev)
228{ 227{
229#ifndef __QNX__ 228#ifndef __QNX__
230 int fd; 229 int fd;
231 230
232 D_TTY ((stderr, "rxvt_control_tty(): pid: %d, tty fd: %d, dev: %s", getpid(), fd_tty, ttydev)); 231 D_TTY ((stderr, "rxvt_control_tty (): pid: %d, tty fd: %d, dev: %s", getpid (), fd_tty, ttydev));
233 /* ---------------------------------------- */ 232 /* ---------------------------------------- */
234# ifdef HAVE_SETSID 233# ifdef HAVE_SETSID
235 setsid (); 234 setsid ();
236# endif 235# endif
237# if defined(HAVE_SETPGID) 236# if defined(HAVE_SETPGID)
… …
241# endif 240# endif
242 /* ---------------------------------------- */ 241 /* ---------------------------------------- */
243# ifdef TIOCNOTTY 242# ifdef TIOCNOTTY
244 243
245 fd = open ("/dev/tty", O_RDWR | O_NOCTTY); 244 fd = open ("/dev/tty", O_RDWR | O_NOCTTY);
246 D_TTY ((stderr, "rxvt_control_tty(): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes")); 245 D_TTY ((stderr, "rxvt_control_tty (): Voiding tty associations: previous=%s", fd < 0 ? "no" : "yes"));
247 if (fd >= 0) 246 if (fd >= 0)
248 { 247 {
249 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */ 248 ioctl (fd, TIOCNOTTY, NULL); /* void tty associations */
250 close (fd); 249 close (fd);
251 } 250 }
252# endif 251# endif
253 /* ---------------------------------------- */ 252 /* ---------------------------------------- */
254 fd = open ("/dev/tty", O_RDWR | O_NOCTTY); 253 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)")); 254 D_TTY ((stderr, "rxvt_control_tty (): /dev/tty has controlling tty? %s", fd < 0 ? "no (good)" : "yes (bad)"));
256 if (fd >= 0) 255 if (fd >= 0)
257 close (fd); /* ouch: still have controlling tty */ 256 close (fd); /* ouch: still have controlling tty */
258 /* ---------------------------------------- */ 257 /* ---------------------------------------- */
259#if defined(PTYS_ARE_PTMX) && defined(I_PUSH) 258#if defined(PTYS_ARE_PTMX) && defined(I_PUSH)
260 /* 259 /*
261 * Push STREAMS modules: 260 * Push STREAMS modules:
262 * ptem: pseudo-terminal hardware emulation module. 261 * ptem: pseudo-terminal hardware emulation module.
263 * ldterm: standard terminal line discipline. 262 * ldterm: standard terminal line discipline.
264 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. 263 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
265 * 264 *
266 * After we push the STREAMS modules, the first open() on the slave side 265 * 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") 266 * (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 267 * 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 268 * 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 269 * 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 270 * 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 271 * 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 272 * 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 273 * close () - on the master side which causes a hang up to be sent
275 * through - Geoff Wing 274 * through - Geoff Wing
276 */ 275 */
277# ifdef HAVE_ISASTREAM 276# ifdef HAVE_ISASTREAM
278 if (isastream (fd_tty) == 1) 277 if (isastream (fd_tty) == 1)
279# endif 278# endif
280 { 279 {
281 D_TTY ((stderr, "rxvt_control_tty(): Pushing STREAMS modules")); 280 D_TTY ((stderr, "rxvt_control_tty (): Pushing STREAMS modules"));
282 ioctl (fd_tty, I_PUSH, "ptem"); 281 ioctl (fd_tty, I_PUSH, "ptem");
283 ioctl (fd_tty, I_PUSH, "ldterm"); 282 ioctl (fd_tty, I_PUSH, "ldterm");
284 ioctl (fd_tty, I_PUSH, "ttcompat"); 283 ioctl (fd_tty, I_PUSH, "ttcompat");
285 } 284 }
286#endif 285#endif
287 /* ---------------------------------------- */ 286 /* ---------------------------------------- */
288# if defined(TIOCSCTTY) 287# if defined(TIOCSCTTY)
289 fd = ioctl (fd_tty, TIOCSCTTY, NULL); 288 fd = ioctl (fd_tty, TIOCSCTTY, NULL);
290 D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSCTTY): %d", fd)); 289 D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSCTTY): %d", fd));
291# elif defined(TIOCSETCTTY) 290# elif defined(TIOCSETCTTY)
292 fd = ioctl (fd_tty, TIOCSETCTTY, NULL); 291 fd = ioctl (fd_tty, TIOCSETCTTY, NULL);
293 D_TTY ((stderr, "rxvt_control_tty(): ioctl(..,TIOCSETCTTY): %d", fd)); 292 D_TTY ((stderr, "rxvt_control_tty (): ioctl (..,TIOCSETCTTY): %d", fd));
294# else 293# else
295 fd = open (ttydev, O_RDWR); 294 fd = open (ttydev, O_RDWR);
296 D_TTY ((stderr, "rxvt_control_tty(): tty open%s", fd < 0 ? " failure" : "ed OK")); 295 D_TTY ((stderr, "rxvt_control_tty (): tty open%s", fd < 0 ? " failure" : "ed OK"));
297 if (fd >= 0) 296 if (fd >= 0)
298 close(fd); 297 close (fd);
299# endif 298# endif
300 /* ---------------------------------------- */ 299 /* ---------------------------------------- */
301 fd = open ("/dev/tty", O_WRONLY); 300 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)")); 301 D_TTY ((stderr, "rxvt_control_tty (): do we have controlling tty now: %s", fd < 0 ? "no (fatal)" : "yes (good)"));
303 if (fd < 0) 302 if (fd < 0)
304 return -1; /* fatal */ 303 return -1; /* fatal */
305 close (fd); 304 close (fd);
306 /* ---------------------------------------- */ 305 /* ---------------------------------------- */
307 D_TTY ((stderr, "rxvt_control_tty(): tcgetpgrp(): %d getpgrp(): %d", tcgetpgrp(fd_tty), getpgrp())); 306 D_TTY ((stderr, "rxvt_control_tty (): tcgetpgrp (): %d getpgrp (): %d", tcgetpgrp (fd_tty), getpgrp ()));
308 /* ---------------------------------------- */ 307 /* ---------------------------------------- */
309#endif /* ! __QNX__ */ 308#endif /* ! __QNX__ */
310 309
311 return 0; 310 return 0;
312} 311}

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