Mercurial > vim
annotate src/pty.c @ 15787:ecdf064c26a3
Added tag v8.1.0900 for changeset ec39beb7e61ff385c7a5ef27202afa300c007ea6
author | Bram Moolenaar <Bram@vim.org> |
---|---|
date | Tue, 12 Feb 2019 22:00:07 +0100 |
parents | d4a6d575e910 |
children | c1dca26a6949 |
rev | line source |
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commit https://github.com/vim/vim/commit/edf3f97ae2af024708ebb4ac614227327033ca47
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1 /* vi:set ts=8 sts=4 sw=4 noet: |
7 | 2 * |
3 * VIM - Vi IMproved by Bram Moolenaar | |
4 * | |
5 * Do ":help uganda" in Vim to read copying and usage conditions. | |
6 * Do ":help credits" in Vim to see a list of people who contributed. | |
7 * See README.txt for an overview of the Vim source code. | |
8 */ | |
9 /* | |
10 * The stuff in this file mostly comes from the "screen" program. | |
11 * Included with permission from Juergen Weigert. | |
12 * Copied from "pty.c". "putenv.c" was used for putenv() in misc2.c. | |
13 * | |
14 * It has been modified to work better with Vim. | |
15 * The parts that are not used in Vim have been deleted. | |
16 * See the "screen" sources for the complete stuff. | |
3282 | 17 * |
18 * This specific version is distibuted under the Vim license (attribution by | |
19 * Juergen Weigert), the GPL applies to the original version, see the | |
20 * copyright notice below. | |
7 | 21 */ |
22 | |
23 /* Copyright (c) 1993 | |
24 * Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de) | |
25 * Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de) | |
26 * Copyright (c) 1987 Oliver Laumann | |
27 * | |
28 * This program is free software; you can redistribute it and/or modify | |
29 * it under the terms of the GNU General Public License as published by | |
30 * the Free Software Foundation; either version 2, or (at your option) | |
31 * any later version. | |
32 * | |
33 * This program is distributed in the hope that it will be useful, | |
34 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
35 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
36 * GNU General Public License for more details. | |
37 * | |
38 * You should have received a copy of the GNU General Public License | |
39 * along with this program (see the file COPYING); if not, write to the | |
40 * Free Software Foundation, Inc., | |
41 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA | |
42 */ | |
43 | |
44 #include "vim.h" | |
45 | |
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46 #if defined(FEAT_GUI) || defined(FEAT_JOB_CHANNEL) |
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47 |
7 | 48 #include <signal.h> |
49 | |
50 #ifdef __CYGWIN32__ | |
51 # include <sys/termios.h> | |
52 #endif | |
53 | |
1030 | 54 #ifdef HAVE_SYS_IOCTL_H |
7 | 55 # include <sys/ioctl.h> |
56 #endif | |
57 | |
58 #if HAVE_STROPTS_H | |
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59 # include <sys/types.h> |
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60 # ifdef sinix |
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61 # define buf_T __system_buf_t__ |
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62 # endif |
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63 # include <stropts.h> |
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64 # ifdef sinix |
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65 # undef buf_T |
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66 # endif |
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67 # ifdef SUN_SYSTEM |
7 | 68 # include <sys/conf.h> |
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69 # if defined(HAVE_SYS_PTMS_H) && defined(HAVE_SVR4_PTYS) |
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70 # include <sys/ptms.h> |
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71 # endif |
7 | 72 # endif |
73 #endif | |
74 | |
1030 | 75 #ifdef HAVE_UNISTD_H |
7 | 76 # include <unistd.h> |
77 #endif | |
78 | |
79 #if HAVE_TERMIO_H | |
80 # include <termio.h> | |
81 #else | |
1030 | 82 # ifdef HAVE_TERMIOS_H |
7 | 83 # include <termios.h> |
84 # endif | |
85 #endif | |
86 | |
87 #if HAVE_SYS_STREAM_H | |
88 # include <sys/stream.h> | |
89 #endif | |
90 | |
91 #if HAVE_SYS_PTEM_H | |
92 # include <sys/ptem.h> | |
93 #endif | |
94 | |
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95 #if !defined(SUN_SYSTEM) && !defined(VMS) |
7 | 96 # include <sys/ioctl.h> |
97 #endif | |
98 | |
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99 #if defined(SUN_SYSTEM) && defined(LOCKPTY) && !defined(TIOCEXCL) |
7 | 100 # include <sys/ttold.h> |
101 #endif | |
102 | |
103 #ifdef ISC | |
104 # include <sys/tty.h> | |
105 # include <sys/sioctl.h> | |
106 # include <sys/pty.h> | |
107 #endif | |
108 | |
109 #ifdef sgi | |
110 # include <sys/sysmacros.h> | |
111 #endif | |
112 | |
113 #if defined(_INCLUDE_HPUX_SOURCE) && !defined(hpux) | |
114 # define hpux | |
115 #endif | |
116 | |
117 /* | |
118 * if no PTYRANGE[01] is in the config file, we pick a default | |
119 */ | |
120 #ifndef PTYRANGE0 | |
121 # define PTYRANGE0 "qprs" | |
122 #endif | |
123 #ifndef PTYRANGE1 | |
124 # define PTYRANGE1 "0123456789abcdef" | |
125 #endif | |
126 | |
127 /* SVR4 pseudo ttys don't seem to work with SCO-5 */ | |
128 #ifdef M_UNIX | |
129 # undef HAVE_SVR4_PTYS | |
130 #endif | |
131 | |
132 /* | |
2834 | 133 * Open all ptys with O_NOCTTY, just to be on the safe side. |
7 | 134 */ |
135 #ifndef O_NOCTTY | |
136 # define O_NOCTTY 0 | |
137 #endif | |
138 | |
139 static void | |
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140 initmaster(int f UNUSED) |
7 | 141 { |
142 #ifndef VMS | |
143 # ifdef POSIX | |
144 tcflush(f, TCIOFLUSH); | |
145 # else | |
146 # ifdef TIOCFLUSH | |
147 (void)ioctl(f, TIOCFLUSH, (char *) 0); | |
148 # endif | |
149 # endif | |
150 # ifdef LOCKPTY | |
151 (void)ioctl(f, TIOCEXCL, (char *) 0); | |
152 # endif | |
153 #endif | |
154 } | |
155 | |
156 /* | |
157 * This causes a hang on some systems, but is required for a properly working | |
158 * pty on others. Needs to be tuned... | |
159 */ | |
160 int | |
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161 setup_slavepty(int fd) |
7 | 162 { |
163 if (fd < 0) | |
164 return 0; | |
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165 #if defined(I_PUSH) && defined(HAVE_SVR4_PTYS) && !defined(sgi) \ |
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166 && !defined(linux) && !defined(__osf__) && !defined(M_UNIX) |
7 | 167 # if defined(HAVE_SYS_PTEM_H) || defined(hpux) |
168 if (ioctl(fd, I_PUSH, "ptem") != 0) | |
169 return -1; | |
170 # endif | |
171 if (ioctl(fd, I_PUSH, "ldterm") != 0) | |
172 return -1; | |
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173 # ifdef SUN_SYSTEM |
7 | 174 if (ioctl(fd, I_PUSH, "ttcompat") != 0) |
175 return -1; | |
176 # endif | |
177 #endif | |
178 return 0; | |
179 } | |
180 | |
181 | |
182 #if defined(OSX) && !defined(PTY_DONE) | |
183 #define PTY_DONE | |
184 int | |
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185 mch_openpty(char **ttyn) |
7 | 186 { |
187 int f; | |
188 static char TtyName[32]; | |
189 | |
190 if ((f = open_controlling_pty(TtyName)) < 0) | |
191 return -1; | |
192 initmaster(f); | |
193 *ttyn = TtyName; | |
194 return f; | |
195 } | |
196 #endif | |
197 | |
198 #if (defined(sequent) || defined(_SEQUENT_)) && defined(HAVE_GETPSEUDOTTY) \ | |
199 && !defined(PTY_DONE) | |
200 #define PTY_DONE | |
201 int | |
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202 mch_openpty(char **ttyn) |
7 | 203 { |
204 char *m, *s; | |
205 int f; | |
206 /* used for opening a new pty-pair: */ | |
207 static char PtyName[32]; | |
208 static char TtyName[32]; | |
209 | |
210 if ((f = getpseudotty(&s, &m)) < 0) | |
211 return -1; | |
212 #ifdef _SEQUENT_ | |
213 fvhangup(s); | |
214 #endif | |
2760 | 215 vim_strncpy((char_u *)PtyName, (char_u *)m, sizeof(PtyName) - 1); |
216 vim_strncpy((char_u *)TtyName, (char_u *)s, sizeof(TtyName) - 1); | |
7 | 217 initmaster(f); |
218 *ttyn = TtyName; | |
219 return f; | |
220 } | |
221 #endif | |
222 | |
223 #if defined(__sgi) && !defined(PTY_DONE) | |
224 #define PTY_DONE | |
225 int | |
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226 mch_openpty(char **ttyn) |
7 | 227 { |
228 int f; | |
229 char *name; | |
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230 RETSIGTYPE (*sigcld) SIGPROTOARG; |
7 | 231 |
232 /* | |
233 * SIGCHLD set to SIG_DFL for _getpty() because it may fork() and | |
234 * exec() /usr/adm/mkpts | |
235 */ | |
236 sigcld = signal(SIGCHLD, SIG_DFL); | |
237 name = _getpty(&f, O_RDWR | O_NONBLOCK | O_EXTRA, 0600, 0); | |
238 signal(SIGCHLD, sigcld); | |
239 | |
240 if (name == 0) | |
241 return -1; | |
242 initmaster(f); | |
243 *ttyn = name; | |
244 return f; | |
245 } | |
246 #endif | |
247 | |
248 #if defined(MIPS) && defined(HAVE_DEV_PTC) && !defined(PTY_DONE) | |
249 #define PTY_DONE | |
250 int | |
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251 mch_openpty(char **ttyn) |
7 | 252 { |
253 int f; | |
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254 stat_T buf; |
7 | 255 /* used for opening a new pty-pair: */ |
256 static char TtyName[32]; | |
257 | |
258 if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_NONBLOCK | O_EXTRA, 0)) < 0) | |
259 return -1; | |
260 if (mch_fstat(f, &buf) < 0) | |
261 { | |
262 close(f); | |
263 return -1; | |
264 } | |
265 sprintf(TtyName, "/dev/ttyq%d", minor(buf.st_rdev)); | |
266 initmaster(f); | |
267 *ttyn = TtyName; | |
268 return f; | |
269 } | |
270 #endif | |
271 | |
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272 #if defined(HAVE_SVR4_PTYS) && !defined(PTY_DONE) && !defined(hpux) \ |
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273 && !(defined(MACOS_X) && !defined(MAC_OS_X_VERSION_10_6)) |
7 | 274 |
1703 | 275 /* NOTE: Even though HPUX can have /dev/ptmx, the code below doesn't work! |
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276 * Same for Mac OS X Leopard (10.5). */ |
7 | 277 #define PTY_DONE |
278 int | |
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279 mch_openpty(char **ttyn) |
7 | 280 { |
281 int f; | |
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282 char *m; |
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283 char *(ptsname(int)); |
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284 int unlockpt(int); |
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285 int grantpt(int); |
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286 RETSIGTYPE (*sigcld) SIGPROTOARG; |
7 | 287 /* used for opening a new pty-pair: */ |
288 static char TtyName[32]; | |
289 | |
290 if ((f = open("/dev/ptmx", O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1) | |
291 return -1; | |
292 | |
293 /* | |
294 * SIGCHLD set to SIG_DFL for grantpt() because it fork()s and | |
295 * exec()s pt_chmod | |
296 */ | |
297 sigcld = signal(SIGCHLD, SIG_DFL); | |
298 if ((m = ptsname(f)) == NULL || grantpt(f) || unlockpt(f)) | |
299 { | |
300 signal(SIGCHLD, sigcld); | |
301 close(f); | |
302 return -1; | |
303 } | |
304 signal(SIGCHLD, sigcld); | |
2760 | 305 vim_strncpy((char_u *)TtyName, (char_u *)m, sizeof(TtyName) - 1); |
7 | 306 initmaster(f); |
307 *ttyn = TtyName; | |
308 return f; | |
309 } | |
310 #endif | |
311 | |
312 #if defined(_AIX) && defined(HAVE_DEV_PTC) && !defined(PTY_DONE) | |
313 #define PTY_DONE | |
314 | |
315 #ifdef _IBMR2 | |
316 int aixhack = -1; | |
317 #endif | |
318 | |
319 int | |
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320 mch_openpty(char **ttyn) |
7 | 321 { |
322 int f; | |
323 /* used for opening a new pty-pair: */ | |
324 static char TtyName[32]; | |
325 | |
326 /* a dumb looking loop replaced by mycrofts code: */ | |
327 if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_EXTRA)) < 0) | |
328 return -1; | |
2760 | 329 vim_strncpy((char_u *)TtyName, (char_u *)ttyname(f), sizeof(TtyName) - 1); |
1076 | 330 if (geteuid() != ROOT_UID && mch_access(TtyName, R_OK | W_OK)) |
7 | 331 { |
332 close(f); | |
333 return -1; | |
334 } | |
335 initmaster(f); | |
336 # ifdef _IBMR2 | |
337 if (aixhack >= 0) | |
338 close(aixhack); | |
339 if ((aixhack = open(TtyName, O_RDWR | O_NOCTTY | O_EXTRA, 0)) < 0) | |
340 { | |
341 close(f); | |
342 return -1; | |
343 } | |
344 # endif | |
345 *ttyn = TtyName; | |
346 return f; | |
347 } | |
348 #endif | |
349 | |
350 #ifndef PTY_DONE | |
351 | |
352 # ifdef hpux | |
353 static char PtyProto[] = "/dev/ptym/ptyXY"; | |
354 static char TtyProto[] = "/dev/pty/ttyXY"; | |
355 # else | |
356 # ifdef __BEOS__ | |
357 static char PtyProto[] = "/dev/pt/XY"; | |
358 static char TtyProto[] = "/dev/tt/XY"; | |
359 # else | |
360 static char PtyProto[] = "/dev/ptyXY"; | |
361 static char TtyProto[] = "/dev/ttyXY"; | |
362 # endif | |
363 # endif | |
364 | |
365 int | |
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366 mch_openpty(char **ttyn) |
7 | 367 { |
368 char *p, *q, *l, *d; | |
369 int f; | |
370 /* used for opening a new pty-pair: */ | |
371 static char PtyName[32]; | |
372 static char TtyName[32]; | |
373 | |
374 strcpy(PtyName, PtyProto); | |
375 strcpy(TtyName, TtyProto); | |
376 for (p = PtyName; *p != 'X'; p++) | |
377 ; | |
378 for (q = TtyName; *q != 'X'; q++) | |
379 ; | |
380 for (l = PTYRANGE0; (*p = *l) != '\0'; l++) | |
381 { | |
382 for (d = PTYRANGE1; (p[1] = *d) != '\0'; d++) | |
383 { | |
384 if ((f = open(PtyName, O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1) | |
385 continue; | |
386 q[0] = *l; | |
387 q[1] = *d; | |
1076 | 388 if (geteuid() != ROOT_UID && mch_access(TtyName, R_OK | W_OK)) |
7 | 389 { |
390 close(f); | |
391 continue; | |
392 } | |
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393 #if defined(SUN_SYSTEM) && defined(TIOCGPGRP) && !defined(SUNOS3) |
7 | 394 /* Hack to ensure that the slave side of the pty is |
395 * unused. May not work in anything other than SunOS4.1 | |
396 */ | |
397 { | |
398 int pgrp; | |
399 | |
400 /* tcgetpgrp does not work (uses TIOCGETPGRP)! */ | |
401 if (ioctl(f, TIOCGPGRP, (char *)&pgrp) != -1 || errno != EIO) | |
402 { | |
403 close(f); | |
404 continue; | |
405 } | |
406 } | |
407 #endif | |
408 initmaster(f); | |
409 *ttyn = TtyName; | |
410 return f; | |
411 } | |
412 } | |
413 return -1; | |
414 } | |
415 #endif | |
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416 |
15632
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417 /* |
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418 * Call isatty(fd), except for SunOS where it's done differently. |
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419 */ |
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420 int |
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421 mch_isatty(int fd) |
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422 { |
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423 # if defined(I_STR) && defined(HAVE_SYS_PTMS_H) && defined(HAVE_SVR4_PTYS) \ |
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424 && defined(SUN_SYSTEM) |
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425 // On SunOS, isatty() for /dev/ptmx returns false or sometimes can hang up |
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426 // in the inner ioctl(), and therefore first determine whether "fd" is a |
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427 // master device. |
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428 struct strioctl istr; |
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429 |
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430 istr.ic_cmd = ISPTM; |
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431 istr.ic_timout = 0; |
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432 istr.ic_dp = NULL; |
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433 istr.ic_len = 0; |
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434 |
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435 if (ioctl(fd, I_STR, &istr) == 0) |
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436 // Trick: return 2 in order to advice the caller that "fd" is a master |
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437 // device. cf. src/os_unix.c:get_tty_fd() |
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438 return 2; |
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439 # endif |
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440 return isatty(fd); |
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441 } |
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442 |
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443 #endif /* FEAT_GUI || FEAT_JOB_CHANNEL */ |