Mercurial > vim
annotate src/pty.c @ 6986:bf56568ed667
Added tag v7-4-810 for changeset a07c3f9cd616
| author | Bram Moolenaar <bram@vim.org> |
|---|---|
| date | Tue, 04 Aug 2015 21:51:25 +0200 |
| parents | 7b59c2c032ca |
| children | 0b6c37dd858d |
| rev | line source |
|---|---|
| 7 | 1 /* vi:set ts=8 sts=4 sw=4: |
| 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 | |
| 46 #include <signal.h> | |
| 47 | |
| 48 #ifdef __CYGWIN32__ | |
| 49 # include <sys/termios.h> | |
| 50 #endif | |
| 51 | |
| 1030 | 52 #ifdef HAVE_SYS_IOCTL_H |
| 7 | 53 # include <sys/ioctl.h> |
| 54 #endif | |
| 55 | |
| 56 #if HAVE_STROPTS_H | |
| 57 #include <sys/types.h> | |
| 58 #ifdef sinix | |
| 59 #define buf_T __system_buf_t__ | |
| 60 #endif | |
| 61 #include <stropts.h> | |
| 62 #ifdef sinix | |
| 63 #undef buf_T | |
| 64 #endif | |
| 65 # ifdef sun | |
| 66 # include <sys/conf.h> | |
| 67 # endif | |
| 68 #endif | |
| 69 | |
| 1030 | 70 #ifdef HAVE_UNISTD_H |
| 7 | 71 # include <unistd.h> |
| 72 #endif | |
| 73 | |
| 74 #if HAVE_TERMIO_H | |
| 75 # include <termio.h> | |
| 76 #else | |
| 1030 | 77 # ifdef HAVE_TERMIOS_H |
| 7 | 78 # include <termios.h> |
| 79 # endif | |
| 80 #endif | |
| 81 | |
| 82 #if HAVE_SYS_STREAM_H | |
| 83 # include <sys/stream.h> | |
| 84 #endif | |
| 85 | |
| 86 #if HAVE_SYS_PTEM_H | |
| 87 # include <sys/ptem.h> | |
| 88 #endif | |
| 89 | |
| 90 #if !defined(sun) && !defined(VMS) && !defined(MACOS) | |
| 91 # include <sys/ioctl.h> | |
| 92 #endif | |
| 93 | |
| 94 #if defined(sun) && defined(LOCKPTY) && !defined(TIOCEXCL) | |
| 95 # include <sys/ttold.h> | |
| 96 #endif | |
| 97 | |
| 98 #ifdef ISC | |
| 99 # include <sys/tty.h> | |
| 100 # include <sys/sioctl.h> | |
| 101 # include <sys/pty.h> | |
| 102 #endif | |
| 103 | |
| 104 #ifdef sgi | |
| 105 # include <sys/sysmacros.h> | |
| 106 #endif | |
| 107 | |
| 108 #if defined(_INCLUDE_HPUX_SOURCE) && !defined(hpux) | |
| 109 # define hpux | |
| 110 #endif | |
| 111 | |
| 112 /* | |
| 113 * if no PTYRANGE[01] is in the config file, we pick a default | |
| 114 */ | |
| 115 #ifndef PTYRANGE0 | |
| 116 # define PTYRANGE0 "qprs" | |
| 117 #endif | |
| 118 #ifndef PTYRANGE1 | |
| 119 # define PTYRANGE1 "0123456789abcdef" | |
| 120 #endif | |
| 121 | |
| 122 /* SVR4 pseudo ttys don't seem to work with SCO-5 */ | |
| 123 #ifdef M_UNIX | |
| 124 # undef HAVE_SVR4_PTYS | |
| 125 #endif | |
| 126 | |
| 127 static void initmaster __ARGS((int)); | |
| 128 | |
| 129 /* | |
| 2834 | 130 * Open all ptys with O_NOCTTY, just to be on the safe side. |
| 7 | 131 */ |
| 132 #ifndef O_NOCTTY | |
| 133 # define O_NOCTTY 0 | |
| 134 #endif | |
| 135 | |
| 136 static void | |
| 137 initmaster(f) | |
|
2154
7c8c7c95a865
First step in the Vim 7.3 branch. Changed version numbers.
Bram Moolenaar <bram@zimbu.org>
parents:
1703
diff
changeset
|
138 int f UNUSED; |
| 7 | 139 { |
| 140 #ifndef VMS | |
| 141 # ifdef POSIX | |
| 142 tcflush(f, TCIOFLUSH); | |
| 143 # else | |
| 144 # ifdef TIOCFLUSH | |
| 145 (void)ioctl(f, TIOCFLUSH, (char *) 0); | |
| 146 # endif | |
| 147 # endif | |
| 148 # ifdef LOCKPTY | |
| 149 (void)ioctl(f, TIOCEXCL, (char *) 0); | |
| 150 # endif | |
| 151 #endif | |
| 152 } | |
| 153 | |
| 154 /* | |
| 155 * This causes a hang on some systems, but is required for a properly working | |
| 156 * pty on others. Needs to be tuned... | |
| 157 */ | |
| 158 int | |
| 159 SetupSlavePTY(fd) | |
| 160 int fd; | |
| 161 { | |
| 162 if (fd < 0) | |
| 163 return 0; | |
| 164 #if defined(I_PUSH) && defined(HAVE_SVR4_PTYS) && !defined(sgi) && !defined(linux) && !defined(__osf__) && !defined(M_UNIX) | |
| 165 # if defined(HAVE_SYS_PTEM_H) || defined(hpux) | |
| 166 if (ioctl(fd, I_PUSH, "ptem") != 0) | |
| 167 return -1; | |
| 168 # endif | |
| 169 if (ioctl(fd, I_PUSH, "ldterm") != 0) | |
| 170 return -1; | |
| 171 # ifdef sun | |
| 172 if (ioctl(fd, I_PUSH, "ttcompat") != 0) | |
| 173 return -1; | |
| 174 # endif | |
| 175 #endif | |
| 176 return 0; | |
| 177 } | |
| 178 | |
| 179 | |
| 180 #if defined(OSX) && !defined(PTY_DONE) | |
| 181 #define PTY_DONE | |
| 182 int | |
| 183 OpenPTY(ttyn) | |
| 184 char **ttyn; | |
| 185 { | |
| 186 int f; | |
| 187 static char TtyName[32]; | |
| 188 | |
| 189 if ((f = open_controlling_pty(TtyName)) < 0) | |
| 190 return -1; | |
| 191 initmaster(f); | |
| 192 *ttyn = TtyName; | |
| 193 return f; | |
| 194 } | |
| 195 #endif | |
| 196 | |
| 197 #if (defined(sequent) || defined(_SEQUENT_)) && defined(HAVE_GETPSEUDOTTY) \ | |
| 198 && !defined(PTY_DONE) | |
| 199 #define PTY_DONE | |
| 200 int | |
| 201 OpenPTY(ttyn) | |
| 202 char **ttyn; | |
| 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 | |
| 226 OpenPTY(ttyn) | |
| 227 char **ttyn; | |
| 228 { | |
| 229 int f; | |
| 230 char *name; | |
| 231 RETSIGTYPE (*sigcld)__ARGS(SIGPROTOARG); | |
| 232 | |
| 233 /* | |
| 234 * SIGCHLD set to SIG_DFL for _getpty() because it may fork() and | |
| 235 * exec() /usr/adm/mkpts | |
| 236 */ | |
| 237 sigcld = signal(SIGCHLD, SIG_DFL); | |
| 238 name = _getpty(&f, O_RDWR | O_NONBLOCK | O_EXTRA, 0600, 0); | |
| 239 signal(SIGCHLD, sigcld); | |
| 240 | |
| 241 if (name == 0) | |
| 242 return -1; | |
| 243 initmaster(f); | |
| 244 *ttyn = name; | |
| 245 return f; | |
| 246 } | |
| 247 #endif | |
| 248 | |
| 249 #if defined(MIPS) && defined(HAVE_DEV_PTC) && !defined(PTY_DONE) | |
| 250 #define PTY_DONE | |
| 251 int | |
| 252 OpenPTY(ttyn) | |
| 253 char **ttyn; | |
| 254 { | |
| 255 int f; | |
| 256 struct stat buf; | |
| 257 /* used for opening a new pty-pair: */ | |
| 258 static char TtyName[32]; | |
| 259 | |
| 260 if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_NONBLOCK | O_EXTRA, 0)) < 0) | |
| 261 return -1; | |
| 262 if (mch_fstat(f, &buf) < 0) | |
| 263 { | |
| 264 close(f); | |
| 265 return -1; | |
| 266 } | |
| 267 sprintf(TtyName, "/dev/ttyq%d", minor(buf.st_rdev)); | |
| 268 initmaster(f); | |
| 269 *ttyn = TtyName; | |
| 270 return f; | |
| 271 } | |
| 272 #endif | |
| 273 | |
| 1703 | 274 #if defined(HAVE_SVR4_PTYS) && !defined(PTY_DONE) && !defined(hpux) && !defined(MACOS_X) |
| 7 | 275 |
| 1703 | 276 /* NOTE: Even though HPUX can have /dev/ptmx, the code below doesn't work! |
| 277 * Same for Mac OS X Leopard. */ | |
| 7 | 278 #define PTY_DONE |
| 279 int | |
| 280 OpenPTY(ttyn) | |
| 281 char **ttyn; | |
| 282 { | |
| 283 int f; | |
|
2397
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Fix for compiler warning about function prototype in pty.c.
Bram Moolenaar <bram@vim.org>
parents:
2154
diff
changeset
|
284 char *m; |
|
d5976fe4349d
Fix for compiler warning about function prototype in pty.c.
Bram Moolenaar <bram@vim.org>
parents:
2154
diff
changeset
|
285 char *(ptsname __ARGS((int))); |
|
d5976fe4349d
Fix for compiler warning about function prototype in pty.c.
Bram Moolenaar <bram@vim.org>
parents:
2154
diff
changeset
|
286 int unlockpt __ARGS((int)); |
|
d5976fe4349d
Fix for compiler warning about function prototype in pty.c.
Bram Moolenaar <bram@vim.org>
parents:
2154
diff
changeset
|
287 int grantpt __ARGS((int)); |
| 7 | 288 RETSIGTYPE (*sigcld)__ARGS(SIGPROTOARG); |
| 289 /* used for opening a new pty-pair: */ | |
| 290 static char TtyName[32]; | |
| 291 | |
| 292 if ((f = open("/dev/ptmx", O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1) | |
| 293 return -1; | |
| 294 | |
| 295 /* | |
| 296 * SIGCHLD set to SIG_DFL for grantpt() because it fork()s and | |
| 297 * exec()s pt_chmod | |
| 298 */ | |
| 299 sigcld = signal(SIGCHLD, SIG_DFL); | |
| 300 if ((m = ptsname(f)) == NULL || grantpt(f) || unlockpt(f)) | |
| 301 { | |
| 302 signal(SIGCHLD, sigcld); | |
| 303 close(f); | |
| 304 return -1; | |
| 305 } | |
| 306 signal(SIGCHLD, sigcld); | |
| 2760 | 307 vim_strncpy((char_u *)TtyName, (char_u *)m, sizeof(TtyName) - 1); |
| 7 | 308 initmaster(f); |
| 309 *ttyn = TtyName; | |
| 310 return f; | |
| 311 } | |
| 312 #endif | |
| 313 | |
| 314 #if defined(_AIX) && defined(HAVE_DEV_PTC) && !defined(PTY_DONE) | |
| 315 #define PTY_DONE | |
| 316 | |
| 317 #ifdef _IBMR2 | |
| 318 int aixhack = -1; | |
| 319 #endif | |
| 320 | |
| 321 int | |
| 322 OpenPTY(ttyn) | |
| 323 char **ttyn; | |
| 324 { | |
| 325 int f; | |
| 326 /* used for opening a new pty-pair: */ | |
| 327 static char TtyName[32]; | |
| 328 | |
| 329 /* a dumb looking loop replaced by mycrofts code: */ | |
| 330 if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_EXTRA)) < 0) | |
| 331 return -1; | |
| 2760 | 332 vim_strncpy((char_u *)TtyName, (char_u *)ttyname(f), sizeof(TtyName) - 1); |
| 1076 | 333 if (geteuid() != ROOT_UID && mch_access(TtyName, R_OK | W_OK)) |
| 7 | 334 { |
| 335 close(f); | |
| 336 return -1; | |
| 337 } | |
| 338 initmaster(f); | |
| 339 # ifdef _IBMR2 | |
| 340 if (aixhack >= 0) | |
| 341 close(aixhack); | |
| 342 if ((aixhack = open(TtyName, O_RDWR | O_NOCTTY | O_EXTRA, 0)) < 0) | |
| 343 { | |
| 344 close(f); | |
| 345 return -1; | |
| 346 } | |
| 347 # endif | |
| 348 *ttyn = TtyName; | |
| 349 return f; | |
| 350 } | |
| 351 #endif | |
| 352 | |
| 353 #ifndef PTY_DONE | |
| 354 | |
| 355 # ifdef hpux | |
| 356 static char PtyProto[] = "/dev/ptym/ptyXY"; | |
| 357 static char TtyProto[] = "/dev/pty/ttyXY"; | |
| 358 # else | |
| 359 # ifdef __BEOS__ | |
| 360 static char PtyProto[] = "/dev/pt/XY"; | |
| 361 static char TtyProto[] = "/dev/tt/XY"; | |
| 362 # else | |
| 363 static char PtyProto[] = "/dev/ptyXY"; | |
| 364 static char TtyProto[] = "/dev/ttyXY"; | |
| 365 # endif | |
| 366 # endif | |
| 367 | |
| 368 int | |
| 369 OpenPTY(ttyn) | |
| 370 char **ttyn; | |
| 371 { | |
| 372 char *p, *q, *l, *d; | |
| 373 int f; | |
| 374 /* used for opening a new pty-pair: */ | |
| 375 static char PtyName[32]; | |
| 376 static char TtyName[32]; | |
| 377 | |
| 378 strcpy(PtyName, PtyProto); | |
| 379 strcpy(TtyName, TtyProto); | |
| 380 for (p = PtyName; *p != 'X'; p++) | |
| 381 ; | |
| 382 for (q = TtyName; *q != 'X'; q++) | |
| 383 ; | |
| 384 for (l = PTYRANGE0; (*p = *l) != '\0'; l++) | |
| 385 { | |
| 386 for (d = PTYRANGE1; (p[1] = *d) != '\0'; d++) | |
| 387 { | |
| 388 #if !defined(MACOS) || defined(USE_CARBONIZED) | |
| 389 if ((f = open(PtyName, O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1) | |
| 390 #else | |
| 391 if ((f = open(PtyName, O_RDWR | O_NOCTTY | O_EXTRA)) == -1) | |
| 392 #endif | |
| 393 continue; | |
| 394 q[0] = *l; | |
| 395 q[1] = *d; | |
| 396 #ifndef MACOS | |
| 1076 | 397 if (geteuid() != ROOT_UID && mch_access(TtyName, R_OK | W_OK)) |
| 7 | 398 { |
| 399 close(f); | |
| 400 continue; | |
| 401 } | |
| 402 #endif | |
| 403 #if defined(sun) && defined(TIOCGPGRP) && !defined(SUNOS3) | |
| 404 /* Hack to ensure that the slave side of the pty is | |
| 405 * unused. May not work in anything other than SunOS4.1 | |
| 406 */ | |
| 407 { | |
| 408 int pgrp; | |
| 409 | |
| 410 /* tcgetpgrp does not work (uses TIOCGETPGRP)! */ | |
| 411 if (ioctl(f, TIOCGPGRP, (char *)&pgrp) != -1 || errno != EIO) | |
| 412 { | |
| 413 close(f); | |
| 414 continue; | |
| 415 } | |
| 416 } | |
| 417 #endif | |
| 418 initmaster(f); | |
| 419 *ttyn = TtyName; | |
| 420 return f; | |
| 421 } | |
| 422 } | |
| 423 return -1; | |
| 424 } | |
| 425 #endif |