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 */ |
68 | int |
67 | int |
69 | rxvt_get_pty(int *fd_tty, const char **ttydev) |
68 | rxvt_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 |
… | |
… | |
227 | rxvt_control_tty (int fd_tty, const char *ttydev) |
226 | rxvt_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 | } |