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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 |
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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 <cstring> |
33 | #include <cstring> |
34 | #include <csignal> |
34 | #include <csignal> |
35 | |
35 | |
36 | #include <sys/types.h> |
36 | #include <sys/types.h> |
|
|
37 | #include <sys/stat.h> |
37 | #include <unistd.h> |
38 | #include <unistd.h> |
38 | #include <fcntl.h> |
39 | #include <fcntl.h> |
39 | |
40 | |
40 | #ifdef HAVE_SYS_IOCTL_H |
41 | #ifdef HAVE_SYS_IOCTL_H |
41 | # include <sys/ioctl.h> |
42 | # include <sys/ioctl.h> |
42 | #endif |
43 | #endif |
43 | #if defined(HAVE_DEV_PTMX) && defined(HAVE_SYS_STROPTS_H) |
44 | #if defined(HAVE_DEV_PTMX) && defined(HAVE_SYS_STROPTS_H) |
44 | # include <sys/stropts.h> /* for I_PUSH */ |
45 | # include <sys/stropts.h> /* for I_PUSH */ |
45 | #endif |
46 | #endif |
46 | #ifdef HAVE_ISASTREAM |
47 | #if defined(HAVE_ISASTREAM) && defined(HAVE_STROPTS_H) |
47 | # include <stropts.h> |
48 | # include <stropts.h> |
48 | #endif |
49 | #endif |
49 | #if defined(HAVE_PTY_H) |
50 | #if defined(HAVE_PTY_H) |
50 | # include <pty.h> |
51 | # include <pty.h> |
51 | #elif defined(HAVE_LIBUTIL_H) |
52 | #elif defined(HAVE_LIBUTIL_H) |
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86 | |
87 | |
87 | if (pfd >= 0) |
88 | if (pfd >= 0) |
88 | { |
89 | { |
89 | if (grantpt (pfd) == 0 /* change slave permissions */ |
90 | if (grantpt (pfd) == 0 /* change slave permissions */ |
90 | && unlockpt (pfd) == 0) |
91 | && unlockpt (pfd) == 0) |
|
|
92 | { |
91 | { /* slave now unlocked */ |
93 | /* slave now unlocked */ |
92 | *ttydev = strdup (ptsname (pfd)); /* get slave's name */ |
94 | *ttydev = strdup (ptsname (pfd)); /* get slave's name */ |
93 | return pfd; |
95 | return pfd; |
94 | } |
96 | } |
95 | |
97 | |
96 | close (pfd); |
98 | close (pfd); |
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104 | static int |
106 | static int |
105 | get_pty (int *fd_tty, char **ttydev) |
107 | get_pty (int *fd_tty, char **ttydev) |
106 | { |
108 | { |
107 | int pfd; |
109 | int pfd; |
108 | int res; |
110 | int res; |
109 | char tty_name[32]; |
|
|
110 | |
111 | |
111 | res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); |
112 | res = openpty (&pfd, fd_tty, NULL, NULL, NULL); |
112 | |
113 | |
113 | if (res != -1) |
114 | if (res != -1) |
114 | { |
115 | { |
115 | *ttydev = strdup (tty_name); |
116 | *ttydev = strdup (ttyname (*fd_tty)); |
116 | return pfd; |
117 | return pfd; |
117 | } |
118 | } |
118 | |
119 | |
119 | return -1; |
120 | return -1; |
120 | } |
121 | } |
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123 | |
124 | |
124 | static int |
125 | static int |
125 | get_pty (int *fd_tty, char **ttydev) |
126 | get_pty (int *fd_tty, char **ttydev) |
126 | { |
127 | { |
127 | int pfd; |
128 | int pfd; |
|
|
129 | char *slave; |
128 | |
130 | |
129 | *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
131 | slave = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
130 | |
132 | |
131 | if (*ttydev != NULL) |
133 | if (slave != NULL) |
132 | return pfd; |
|
|
133 | |
|
|
134 | return -1; |
|
|
135 | } |
|
|
136 | |
|
|
137 | #elif defined(HAVE_DEV_PTC) |
|
|
138 | |
|
|
139 | static int |
|
|
140 | get_pty (int *fd_tty, char **ttydev) |
|
|
141 | { |
|
|
142 | int pfd; |
|
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143 | |
|
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144 | if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
|
|
145 | { |
134 | { |
146 | *ttydev = strdup (ttyname (pfd)); |
|
|
147 | return pfd; |
|
|
148 | } |
|
|
149 | |
|
|
150 | return -1; |
|
|
151 | } |
|
|
152 | |
|
|
153 | #elif defined(HAVE_DEV_CLONE) |
|
|
154 | |
|
|
155 | static int |
|
|
156 | get_pty (int *fd_tty, char **ttydev) |
|
|
157 | { |
|
|
158 | int pfd; |
|
|
159 | |
|
|
160 | if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
|
|
161 | { |
|
|
162 | *ttydev = strdup (ptsname (pfd)); |
135 | *ttydev = strdup (slave); |
163 | return pfd; |
136 | return pfd; |
164 | } |
137 | } |
165 | |
138 | |
166 | return -1; |
139 | return -1; |
167 | } |
140 | } |
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243 | * documentation is really unclear about whether it is any close () on |
216 | * documentation is really unclear about whether it is any close () on |
244 | * the master side or the last close () - i.e. a proper STREAMS dismantling |
217 | * the master side or the last close () - i.e. a proper STREAMS dismantling |
245 | * close () - on the master side which causes a hang up to be sent |
218 | * close () - on the master side which causes a hang up to be sent |
246 | * through - Geoff Wing |
219 | * through - Geoff Wing |
247 | */ |
220 | */ |
248 | # ifdef HAVE_ISASTREAM |
221 | #if defined(HAVE_ISASTREAM) && defined(HAVE_STROPTS_H) |
249 | if (isastream (fd_tty) == 1) |
222 | if (isastream (fd_tty) == 1) |
250 | # endif |
223 | # endif |
251 | { |
224 | { |
252 | ioctl (fd_tty, I_PUSH, "ptem"); |
225 | ioctl (fd_tty, I_PUSH, "ptem"); |
253 | ioctl (fd_tty, I_PUSH, "ldterm"); |
226 | ioctl (fd_tty, I_PUSH, "ldterm"); |
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323 | { |
296 | { |
324 | #ifdef TTY_GID_SUPPORT |
297 | #ifdef TTY_GID_SUPPORT |
325 | struct group *gr = getgrnam ("tty"); |
298 | struct group *gr = getgrnam ("tty"); |
326 | |
299 | |
327 | if (gr) |
300 | if (gr) |
|
|
301 | { |
328 | { /* change group ownership of tty to "tty" */ |
302 | /* change group ownership of tty to "tty" */ |
329 | mode = S_IRUSR | S_IWUSR | S_IWGRP; |
303 | mode = S_IRUSR | S_IWUSR | S_IWGRP; |
330 | gid = gr->gr_gid; |
304 | gid = gr->gr_gid; |
331 | } |
305 | } |
332 | else |
306 | else |
333 | #endif /* TTY_GID_SUPPORT */ |
307 | #endif /* TTY_GID_SUPPORT */ |
334 | { |
308 | { |
335 | mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; |
309 | mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; |
336 | gid = 0; |
310 | gid = 0; |
337 | } |
311 | } |
338 | } |
312 | } |