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Comparing libptytty/src/ptytty.C (file contents):
Revision 1.34 by ayin, Fri Dec 14 09:51:32 2007 UTC vs.
Revision 1.47 by sf-exg, Wed Dec 21 11:07:22 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
… …
23 * You should have received a copy of the GNU General Public License 23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software 24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 25 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 *---------------------------------------------------------------------*/ 26 *---------------------------------------------------------------------*/
27 27
28#include "../config.h" 28#include "config.h"
29 29
30#include "ptytty.h" 30#include "ptytty.h"
31 31
32#include <cstdlib> 32#include <cstdlib>
33#include <cstdio>
33#include <cstring> 34#include <cstring>
34#include <csignal>
35 35
36#include <sys/types.h> 36#include <sys/types.h>
37#include <sys/stat.h> 37#include <sys/stat.h>
38#include <unistd.h> 38#include <unistd.h>
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#ifdef HAVE_ISASTREAM 47#if defined(HAVE_ISASTREAM) && defined(HAVE_STROPTS_H)
48# include <stropts.h> 48# include <stropts.h>
49#endif 49#endif
50#if defined(HAVE_PTY_H) 50#if defined(HAVE_PTY_H)
51# include <pty.h> 51# include <pty.h>
52#elif defined(HAVE_LIBUTIL_H) 52#elif defined(HAVE_LIBUTIL_H)
… …
56#endif 56#endif
57#ifdef TTY_GID_SUPPORT 57#ifdef TTY_GID_SUPPORT
58#include <grp.h> 58#include <grp.h>
59#endif 59#endif
60 60
61#include <cstdio> 61#ifndef O_NOCTTY
62# define O_NOCTTY 0
63#endif
62 64
63///////////////////////////////////////////////////////////////////////////// 65/////////////////////////////////////////////////////////////////////////////
64 66
65/* ------------------------------------------------------------------------- * 67/* ------------------------------------------------------------------------- *
66 * GET PSEUDO TELETYPE - MASTER AND SLAVE * 68 * GET PSEUDO TELETYPE - MASTER AND SLAVE *
… …
76 get_pty (int *fd_tty, char **ttydev) 78 get_pty (int *fd_tty, char **ttydev)
77 { 79 {
78 int pfd; 80 int pfd;
79 81
80# if defined(HAVE_GETPT) 82# if defined(HAVE_GETPT)
81 pfd = getpt(); 83 pfd = getpt ();
82# elif defined(HAVE_POSIX_OPENPT) 84# elif defined(HAVE_POSIX_OPENPT)
83 pfd = posix_openpt (O_RDWR); 85 pfd = posix_openpt (O_RDWR | O_NOCTTY);
84# else 86# else
87# ifdef _AIX
85 pfd = open (CLONE_DEVICE, O_RDWR | O_NOCTTY, 0); 88 pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0);
89# else
90 pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0);
91# endif
86# endif 92# endif
87 93
88 if (pfd >= 0) 94 if (pfd >= 0)
89 { 95 {
90 if (grantpt (pfd) == 0 /* change slave permissions */ 96 if (grantpt (pfd) == 0 /* change slave permissions */
… …
126 get_pty (int *fd_tty, char **ttydev) 132 get_pty (int *fd_tty, char **ttydev)
127 { 133 {
128 int pfd; 134 int pfd;
129 char *slave; 135 char *slave;
130 136
131 slave = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); 137 slave = _getpty (&pfd, O_RDWR | O_NOCTTY, 0622, 0);
132 138
133 if (slave != NULL) 139 if (slave != NULL)
134 { 140 {
135 *ttydev = strdup (slave); 141 *ttydev = strdup (slave);
136 return pfd;
137 }
138
139 return -1;
140 }
141
142#elif defined(HAVE_DEV_PTC)
143
144 static int
145 get_pty (int *fd_tty, char **ttydev)
146 {
147 int pfd;
148
149 if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0)
150 {
151 *ttydev = strdup (ttyname (pfd));
152 return pfd;
153 }
154
155 return -1;
156 }
157
158#elif defined(HAVE_DEV_CLONE)
159
160 static int
161 get_pty (int *fd_tty, char **ttydev)
162 {
163 int pfd;
164
165 if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0)
166 {
167 *ttydev = strdup (ptsname (pfd));
168 return pfd; 142 return pfd;
169 } 143 }
170 144
171 return -1; 145 return -1;
172 } 146 }
… …
184 const char *majors = "pqrstuvwxyzabcde"; 158 const char *majors = "pqrstuvwxyzabcde";
185 const char *minors = "0123456789abcdef"; 159 const char *minors = "0123456789abcdef";
186 160
187 for (i = 0; i < 256; i++) 161 for (i = 0; i < 256; i++)
188 { 162 {
189 snprintf(pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]); 163 snprintf (pty_name, 32, "/dev/pty%c%c", majors[i / 16], minors[i % 16]);
190 snprintf(tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]); 164 snprintf (tty_name, 32, "/dev/tty%c%c", majors[i / 16], minors[i % 16]);
191 165
192 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) 166 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
193 { 167 {
194 snprintf(pty_name, 32, "/dev/ptyp%d", i); 168 snprintf (pty_name, 32, "/dev/ptyp%d", i);
195 snprintf(tty_name, 32, "/dev/ttyp%d", i); 169 snprintf (tty_name, 32, "/dev/ttyp%d", i);
196 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1) 170 if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) == -1)
197 continue; 171 continue;
198 } 172 }
199 173
200 if (access (tty_name, R_OK | W_OK) == 0) 174 if (access (tty_name, R_OK | W_OK) == 0)
… …
229control_tty (int fd_tty) 203control_tty (int fd_tty)
230{ 204{
231 int fd; 205 int fd;
232 206
233 setsid (); 207 setsid ();
234
235#if defined(HAVE_DEV_PTMX) && defined(I_PUSH)
236 /*
237 * Push STREAMS modules:
238 * ptem: pseudo-terminal hardware emulation module.
239 * ldterm: standard terminal line discipline.
240 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
241 *
242 * After we push the STREAMS modules, the first open () on the slave side
243 * (i.e. the next section between the dashes giving us "tty opened OK")
244 * should make the "ptem" (or "ldterm" depending upon either which OS
245 * version or which set of manual pages you have) module give us a
246 * controlling terminal. We must already have close ()d the master side
247 * fd in this child process before we push STREAMS modules on because the
248 * documentation is really unclear about whether it is any close () on
249 * the master side or the last close () - i.e. a proper STREAMS dismantling
250 * close () - on the master side which causes a hang up to be sent
251 * through - Geoff Wing
252 */
253# ifdef HAVE_ISASTREAM
254 if (isastream (fd_tty) == 1)
255# endif
256 {
257 ioctl (fd_tty, I_PUSH, "ptem");
258 ioctl (fd_tty, I_PUSH, "ldterm");
259 ioctl (fd_tty, I_PUSH, "ttcompat");
260 }
261#endif
262 208
263#ifdef TIOCSCTTY 209#ifdef TIOCSCTTY
264 ioctl (fd_tty, TIOCSCTTY, NULL); 210 ioctl (fd_tty, TIOCSCTTY, NULL);
265#else 211#else
266 fd = open (ttyname (fd_tty), O_RDWR); 212 fd = open (ttyname (fd_tty), O_RDWR);
… …
385{ 331{
386 /* get master (pty) */ 332 /* get master (pty) */
387 if ((pty = get_pty (&tty, &name)) < 0) 333 if ((pty = get_pty (&tty, &name)) < 0)
388 return false; 334 return false;
389 335
390 fcntl (pty, F_SETFL, O_NONBLOCK);
391
392 /* get slave (tty) */ 336 /* get slave (tty) */
393 if (tty < 0) 337 if (tty < 0)
394 { 338 {
395#ifndef NO_SETOWNER_TTYDEV 339#ifndef NO_SETOWNER_TTYDEV
396 chown (name, getuid (), ttyconf.gid); /* fail silently */ 340 chown (name, getuid (), ttyconf.gid); /* fail silently */
… …
405 put (); 349 put ();
406 return false; 350 return false;
407 } 351 }
408 } 352 }
409 353
354#if defined(I_PUSH)
355 /*
356 * Push STREAMS modules:
357 * ptem: pseudo-terminal hardware emulation module.
358 * ldterm: standard terminal line discipline.
359 * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module.
360 *
361 * After we push the STREAMS modules, the first open () on the slave side
362 * should make the "ptem" (or "ldterm" depending upon either which OS
363 * version or which set of manual pages you have) module give us a
364 * controlling terminal. We must already have close ()d the master side
365 * fd in this child process before we push STREAMS modules on because the
366 * documentation is really unclear about whether it is any close () on
367 * the master side or the last close () - i.e. a proper STREAMS dismantling
368 * close () - on the master side which causes a hang up to be sent
369 * through - Geoff Wing
370 */
371#if defined(HAVE_ISASTREAM) && defined(HAVE_STROPTS_H)
372 if (isastream (tty) == 1)
373# endif
374 {
375 ioctl (tty, I_PUSH, "ptem");
376 ioctl (tty, I_PUSH, "ldterm");
377 ioctl (tty, I_PUSH, "ttcompat");
378 }
379#endif
380
381#if UTMP_SUPPORT
382# if defined(HAVE_STRUCT_UTMP) && !defined(HAVE_UTMP_PID)
383 int fd_stdin = dup (STDIN_FILENO);
384 dup2 (tty, STDIN_FILENO);
385
386 utmp_pos = ttyslot ();
387
388 dup2 (fd_stdin, STDIN_FILENO);
389 close (fd_stdin);
390# endif
391#endif
392
410 return true; 393 return true;
411} 394}
412 395

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