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Comparing libptytty/src/ptytty.C (file contents):
Revision 1.37 by sf-exg, Sun Mar 28 08:39:34 2010 UTC vs.
Revision 1.45 by sf-exg, Tue Dec 20 16:09:32 2011 UTC

… …
5 * File: ptytty.C 5 * File: ptytty.C
6 *----------------------------------------------------------------------* 6 *----------------------------------------------------------------------*
7 * 7 *
8 * All portions of code are copyright by their respective author/s. 8 * All portions of code are copyright by their respective author/s.
9 * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com> 9 * Copyright (c) 1999-2001 Geoff Wing <gcw@pobox.com>
10 * Copyright (c) 2004-2006 Marc Lehmann <pcg@goof.com> 10 * Copyright (c) 2004-2006 Marc Lehmann <schmorp@schmorp.de>
11 * Copyright (c) 2006 Emanuele Giaquinta <e.giaquinta@glauco.it> 11 * Copyright (c) 2006 Emanuele Giaquinta <e.giaquinta@glauco.it>
12 * 12 *
13 * This program is free software; you can redistribute it and/or modify 13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by 14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or 15 * the Free Software Foundation; either version 2 of the License, or
… …
39#include <fcntl.h> 39#include <fcntl.h>
40 40
41#ifdef HAVE_SYS_IOCTL_H 41#ifdef HAVE_SYS_IOCTL_H
42# include <sys/ioctl.h> 42# include <sys/ioctl.h>
43#endif 43#endif
44#if defined(HAVE_DEV_PTMX) && defined(HAVE_SYS_STROPTS_H) 44#if defined(HAVE_SYS_STROPTS_H)
45# include <sys/stropts.h> /* for I_PUSH */ 45# include <sys/stropts.h> /* for I_PUSH */
46#endif 46#endif
47#if defined(HAVE_ISASTREAM) && defined(HAVE_STROPTS_H) 47#if defined(HAVE_ISASTREAM) && defined(HAVE_STROPTS_H)
48# include <stropts.h> 48# include <stropts.h>
49#endif 49#endif
… …
76 get_pty (int *fd_tty, char **ttydev) 76 get_pty (int *fd_tty, char **ttydev)
77 { 77 {
78 int pfd; 78 int pfd;
79 79
80# if defined(HAVE_GETPT) 80# if defined(HAVE_GETPT)
81 pfd = getpt(); 81 pfd = getpt ();
82# elif defined(HAVE_POSIX_OPENPT) 82# elif defined(HAVE_POSIX_OPENPT)
83 pfd = posix_openpt (O_RDWR); 83 pfd = posix_openpt (O_RDWR | O_NOCTTY);
84# else 84# else
85# ifdef _AIX
85 pfd = open (CLONE_DEVICE, O_RDWR | O_NOCTTY, 0); 86 pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0);
87# else
88 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
89# endif
86# endif 90# endif
87 91
88 if (pfd >= 0) 92 if (pfd >= 0)
89 { 93 {
90 if (grantpt (pfd) == 0 /* change slave permissions */ 94 if (grantpt (pfd) == 0 /* change slave permissions */
… …
126 get_pty (int *fd_tty, char **ttydev) 130 get_pty (int *fd_tty, char **ttydev)
127 { 131 {
128 int pfd; 132 int pfd;
129 char *slave; 133 char *slave;
130 134
131 slave = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); 135 slave = _getpty (&pfd, O_RDWR | O_NOCTTY, 0622, 0);
132 136
133 if (slave != NULL) 137 if (slave != NULL)
134 { 138 {
135 *ttydev = strdup (slave); 139 *ttydev = strdup (slave);
136 return pfd; 140 return pfd;
… …
152 const char *majors = "pqrstuvwxyzabcde"; 156 const char *majors = "pqrstuvwxyzabcde";
153 const char *minors = "0123456789abcdef"; 157 const char *minors = "0123456789abcdef";
154 158
155 for (i = 0; i < 256; i++) 159 for (i = 0; i < 256; i++)
156 { 160 {
157 snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]); 161 snprintf (pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]);
158 snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]); 162 snprintf (tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]);
159 163
160 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) 164 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
161 { 165 {
162 snprintf(pty_name, 32, "/dev/ptyp%d", i); 166 snprintf (pty_name, 32, "/dev/ptyp%d", i);
163 snprintf(tty_name, 32, "/dev/ttyp%d", i); 167 snprintf (tty_name, 32, "/dev/ttyp%d", i);
164 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) 168 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
165 continue; 169 continue;
166 } 170 }
167 171
168 if (access (tty_name, R_OK | W_OK) == 0) 172 if (access (tty_name, R_OK | W_OK) == 0)
… …
197control_tty (int fd_tty) 201control_tty (int fd_tty)
198{ 202{
199 int fd; 203 int fd;
200 204
201 setsid (); 205 setsid ();
202
203#if defined(HAVE_DEV_PTMX) && defined(I_PUSH)
204 /*
205 * Push STREAMS modules:
206 * ptem: pseudo-terminal hardware emulation module.
207 * ldterm: standard terminal line discipline.
208 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
209 *
210 * After we push the STREAMS modules, the first open () on the slave side
211 * (i.e. the next section between the dashes giving us "tty opened OK")
212 * should make the "ptem" (or "ldterm" depending upon either which OS
213 * version or which set of manual pages you have) module give us a
214 * controlling terminal. We must already have close ()d the master side
215 * fd in this child process before we push STREAMS modules on because the
216 * documentation is really unclear about whether it is any close () on
217 * the master side or the last close () - i.e. a proper STREAMS dismantling
218 * close () - on the master side which causes a hang up to be sent
219 * through - Geoff Wing
220 */
221#if defined(HAVE_ISASTREAM) && defined(HAVE_STROPTS_H)
222 if (isastream (fd_tty) == 1)
223# endif
224 {
225 ioctl (fd_tty, I_PUSH, "ptem");
226 ioctl (fd_tty, I_PUSH, "ldterm");
227 ioctl (fd_tty, I_PUSH, "ttcompat");
228 }
229#endif
230 206
231#ifdef TIOCSCTTY 207#ifdef TIOCSCTTY
232 ioctl (fd_tty, TIOCSCTTY, NULL); 208 ioctl (fd_tty, TIOCSCTTY, NULL);
233#else 209#else
234 fd = open (ttyname (fd_tty), O_RDWR); 210 fd = open (ttyname (fd_tty), O_RDWR);
… …
353{ 329{
354 /* get master (pty) */ 330 /* get master (pty) */
355 if ((pty = get_pty (&tty, &name)) < 0) 331 if ((pty = get_pty (&tty, &name)) < 0)
356 return false; 332 return false;
357 333
358 fcntl (pty, F_SETFL, O_NONBLOCK);
359
360 /* get slave (tty) */ 334 /* get slave (tty) */
361 if (tty < 0) 335 if (tty < 0)
362 { 336 {
363#ifndef NO_SETOWNER_TTYDEV 337#ifndef NO_SETOWNER_TTYDEV
364 chown (name, getuid (), ttyconf.gid); /* fail silently */ 338 chown (name, getuid (), ttyconf.gid); /* fail silently */
… …
373 put (); 347 put ();
374 return false; 348 return false;
375 } 349 }
376 } 350 }
377 351
352#if defined(I_PUSH)
353 /*
354 * Push STREAMS modules:
355 * ptem: pseudo-terminal hardware emulation module.
356 * ldterm: standard terminal line discipline.
357 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
358 *
359 * After we push the STREAMS modules, the first open () on the slave side
360 * should make the "ptem" (or "ldterm" depending upon either which OS
361 * version or which set of manual pages you have) module give us a
362 * controlling terminal. We must already have close ()d the master side
363 * fd in this child process before we push STREAMS modules on because the
364 * documentation is really unclear about whether it is any close () on
365 * the master side or the last close () - i.e. a proper STREAMS dismantling
366 * close () - on the master side which causes a hang up to be sent
367 * through - Geoff Wing
368 */
369#if defined(HAVE_ISASTREAM) && defined(HAVE_STROPTS_H)
370 if (isastream (tty) == 1)
371# endif
372 {
373 ioctl (tty, I_PUSH, "ptem");
374 ioctl (tty, I_PUSH, "ldterm");
375 ioctl (tty, I_PUSH, "ttcompat");
376 }
377#endif
378
379#if UTMP_SUPPORT
380# if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
381 int fd_stdin = dup (STDIN_FILENO);
382 dup2 (tty, STDIN_FILENO);
383
384 utmp_pos = ttyslot ();
385
386 dup2 (fd_stdin, STDIN_FILENO);
387 close (fd_stdin);
388# endif
389#endif
390
378 return true; 391 return true;
379} 392}
380 393

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