Mercurial > vim
annotate src/pty.c @ 16842:a3555dcb63cd
Added tag v8.1.1422 for changeset cf630fab9fb6c02abc74f838df86750263e0efcb
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Thu, 30 May 2019 14:30:08 +0200 |
| parents | fd57da82dd5d |
| children | d1e77015f60b |
| 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 | |
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139 #if defined(HAVE_SVR4_PTYS) || defined(HAVE_POSIX_OPENPT) |
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140 // These should be in stdlib.h, but it depends on _XOPEN_SOURCE. |
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141 char *ptsname(int); |
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142 int unlockpt(int); |
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143 int grantpt(int); |
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144 int posix_openpt(int flags); |
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145 #endif |
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146 |
| 7 | 147 static void |
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148 initmaster(int f UNUSED) |
| 7 | 149 { |
| 150 #ifndef VMS | |
| 151 # ifdef POSIX | |
| 152 tcflush(f, TCIOFLUSH); | |
| 153 # else | |
| 154 # ifdef TIOCFLUSH | |
| 155 (void)ioctl(f, TIOCFLUSH, (char *) 0); | |
| 156 # endif | |
| 157 # endif | |
| 158 # ifdef LOCKPTY | |
| 159 (void)ioctl(f, TIOCEXCL, (char *) 0); | |
| 160 # endif | |
| 161 #endif | |
| 162 } | |
| 163 | |
| 164 /* | |
| 165 * This causes a hang on some systems, but is required for a properly working | |
| 166 * pty on others. Needs to be tuned... | |
| 167 */ | |
| 168 int | |
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169 setup_slavepty(int fd) |
| 7 | 170 { |
| 171 if (fd < 0) | |
| 172 return 0; | |
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173 #if defined(I_PUSH) && defined(HAVE_SVR4_PTYS) && !defined(sgi) \ |
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174 && !defined(linux) && !defined(__osf__) && !defined(M_UNIX) |
| 7 | 175 # if defined(HAVE_SYS_PTEM_H) || defined(hpux) |
| 176 if (ioctl(fd, I_PUSH, "ptem") != 0) | |
| 177 return -1; | |
| 178 # endif | |
| 179 if (ioctl(fd, I_PUSH, "ldterm") != 0) | |
| 180 return -1; | |
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181 # ifdef SUN_SYSTEM |
| 7 | 182 if (ioctl(fd, I_PUSH, "ttcompat") != 0) |
| 183 return -1; | |
| 184 # endif | |
| 185 #endif | |
| 186 return 0; | |
| 187 } | |
| 188 | |
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189 #if defined(HAVE_POSIX_OPENPT) && !defined(PTY_DONE) |
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190 #define PTY_DONE |
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191 int |
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192 mch_openpty(char **ttyn) |
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193 { |
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194 int f; |
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195 char *m; |
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196 RETSIGTYPE (*sigcld) SIGPROTOARG; |
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197 static char TtyName[32]; // used for opening a new pty-pair |
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198 |
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199 if ((f = posix_openpt(O_RDWR | O_NOCTTY | O_EXTRA)) == -1) |
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200 return -1; |
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201 |
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202 // SIGCHLD set to SIG_DFL for grantpt() because it fork()s and |
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203 // exec()s pt_chmod |
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204 sigcld = signal(SIGCHLD, SIG_DFL); |
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205 if ((m = ptsname(f)) == NULL || grantpt(f) || unlockpt(f)) |
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206 { |
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207 signal(SIGCHLD, sigcld); |
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208 close(f); |
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209 return -1; |
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210 } |
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211 signal(SIGCHLD, sigcld); |
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212 vim_strncpy((char_u *)TtyName, (char_u *)m, sizeof(TtyName) - 1); |
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213 initmaster(f); |
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214 *ttyn = TtyName; |
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215 return f; |
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216 } |
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217 #endif |
| 7 | 218 |
| 219 #if defined(OSX) && !defined(PTY_DONE) | |
| 220 #define PTY_DONE | |
| 221 int | |
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222 mch_openpty(char **ttyn) |
| 7 | 223 { |
| 224 int f; | |
| 225 static char TtyName[32]; | |
| 226 | |
| 227 if ((f = open_controlling_pty(TtyName)) < 0) | |
| 228 return -1; | |
| 229 initmaster(f); | |
| 230 *ttyn = TtyName; | |
| 231 return f; | |
| 232 } | |
| 233 #endif | |
| 234 | |
| 235 #if (defined(sequent) || defined(_SEQUENT_)) && defined(HAVE_GETPSEUDOTTY) \ | |
| 236 && !defined(PTY_DONE) | |
| 237 #define PTY_DONE | |
| 238 int | |
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239 mch_openpty(char **ttyn) |
| 7 | 240 { |
| 241 char *m, *s; | |
| 242 int f; | |
| 243 /* used for opening a new pty-pair: */ | |
| 244 static char PtyName[32]; | |
| 245 static char TtyName[32]; | |
| 246 | |
| 247 if ((f = getpseudotty(&s, &m)) < 0) | |
| 248 return -1; | |
| 249 #ifdef _SEQUENT_ | |
| 250 fvhangup(s); | |
| 251 #endif | |
| 2760 | 252 vim_strncpy((char_u *)PtyName, (char_u *)m, sizeof(PtyName) - 1); |
| 253 vim_strncpy((char_u *)TtyName, (char_u *)s, sizeof(TtyName) - 1); | |
| 7 | 254 initmaster(f); |
| 255 *ttyn = TtyName; | |
| 256 return f; | |
| 257 } | |
| 258 #endif | |
| 259 | |
| 260 #if defined(__sgi) && !defined(PTY_DONE) | |
| 261 #define PTY_DONE | |
| 262 int | |
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263 mch_openpty(char **ttyn) |
| 7 | 264 { |
| 265 int f; | |
| 266 char *name; | |
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267 RETSIGTYPE (*sigcld) SIGPROTOARG; |
| 7 | 268 |
| 269 /* | |
| 270 * SIGCHLD set to SIG_DFL for _getpty() because it may fork() and | |
| 271 * exec() /usr/adm/mkpts | |
| 272 */ | |
| 273 sigcld = signal(SIGCHLD, SIG_DFL); | |
| 274 name = _getpty(&f, O_RDWR | O_NONBLOCK | O_EXTRA, 0600, 0); | |
| 275 signal(SIGCHLD, sigcld); | |
| 276 | |
| 277 if (name == 0) | |
| 278 return -1; | |
| 279 initmaster(f); | |
| 280 *ttyn = name; | |
| 281 return f; | |
| 282 } | |
| 283 #endif | |
| 284 | |
| 285 #if defined(MIPS) && defined(HAVE_DEV_PTC) && !defined(PTY_DONE) | |
| 286 #define PTY_DONE | |
| 287 int | |
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288 mch_openpty(char **ttyn) |
| 7 | 289 { |
| 290 int f; | |
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291 stat_T buf; |
| 7 | 292 /* used for opening a new pty-pair: */ |
| 293 static char TtyName[32]; | |
| 294 | |
| 295 if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_NONBLOCK | O_EXTRA, 0)) < 0) | |
| 296 return -1; | |
| 297 if (mch_fstat(f, &buf) < 0) | |
| 298 { | |
| 299 close(f); | |
| 300 return -1; | |
| 301 } | |
| 302 sprintf(TtyName, "/dev/ttyq%d", minor(buf.st_rdev)); | |
| 303 initmaster(f); | |
| 304 *ttyn = TtyName; | |
| 305 return f; | |
| 306 } | |
| 307 #endif | |
| 308 | |
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309 #if defined(HAVE_SVR4_PTYS) && !defined(PTY_DONE) && !defined(hpux) \ |
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310 && !(defined(MACOS_X) && !defined(MAC_OS_X_VERSION_10_6)) |
| 7 | 311 |
| 1703 | 312 /* NOTE: Even though HPUX can have /dev/ptmx, the code below doesn't work! |
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313 * Same for Mac OS X Leopard (10.5). */ |
| 7 | 314 #define PTY_DONE |
| 315 int | |
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316 mch_openpty(char **ttyn) |
| 7 | 317 { |
| 318 int f; | |
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319 char *m; |
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320 RETSIGTYPE (*sigcld) SIGPROTOARG; |
| 7 | 321 /* used for opening a new pty-pair: */ |
| 322 static char TtyName[32]; | |
| 323 | |
| 324 if ((f = open("/dev/ptmx", O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1) | |
| 325 return -1; | |
| 326 | |
| 327 /* | |
| 328 * SIGCHLD set to SIG_DFL for grantpt() because it fork()s and | |
| 329 * exec()s pt_chmod | |
| 330 */ | |
| 331 sigcld = signal(SIGCHLD, SIG_DFL); | |
| 332 if ((m = ptsname(f)) == NULL || grantpt(f) || unlockpt(f)) | |
| 333 { | |
| 334 signal(SIGCHLD, sigcld); | |
| 335 close(f); | |
| 336 return -1; | |
| 337 } | |
| 338 signal(SIGCHLD, sigcld); | |
| 2760 | 339 vim_strncpy((char_u *)TtyName, (char_u *)m, sizeof(TtyName) - 1); |
| 7 | 340 initmaster(f); |
| 341 *ttyn = TtyName; | |
| 342 return f; | |
| 343 } | |
| 344 #endif | |
| 345 | |
| 346 #if defined(_AIX) && defined(HAVE_DEV_PTC) && !defined(PTY_DONE) | |
| 347 #define PTY_DONE | |
| 348 | |
| 349 #ifdef _IBMR2 | |
| 350 int aixhack = -1; | |
| 351 #endif | |
| 352 | |
| 353 int | |
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354 mch_openpty(char **ttyn) |
| 7 | 355 { |
| 356 int f; | |
| 357 /* used for opening a new pty-pair: */ | |
| 358 static char TtyName[32]; | |
| 359 | |
| 360 /* a dumb looking loop replaced by mycrofts code: */ | |
| 361 if ((f = open("/dev/ptc", O_RDWR | O_NOCTTY | O_EXTRA)) < 0) | |
| 362 return -1; | |
| 2760 | 363 vim_strncpy((char_u *)TtyName, (char_u *)ttyname(f), sizeof(TtyName) - 1); |
| 1076 | 364 if (geteuid() != ROOT_UID && mch_access(TtyName, R_OK | W_OK)) |
| 7 | 365 { |
| 366 close(f); | |
| 367 return -1; | |
| 368 } | |
| 369 initmaster(f); | |
| 370 # ifdef _IBMR2 | |
| 371 if (aixhack >= 0) | |
| 372 close(aixhack); | |
| 373 if ((aixhack = open(TtyName, O_RDWR | O_NOCTTY | O_EXTRA, 0)) < 0) | |
| 374 { | |
| 375 close(f); | |
| 376 return -1; | |
| 377 } | |
| 378 # endif | |
| 379 *ttyn = TtyName; | |
| 380 return f; | |
| 381 } | |
| 382 #endif | |
| 383 | |
| 384 #ifndef PTY_DONE | |
| 385 | |
| 386 # ifdef hpux | |
| 387 static char PtyProto[] = "/dev/ptym/ptyXY"; | |
| 388 static char TtyProto[] = "/dev/pty/ttyXY"; | |
| 389 # else | |
| 390 # ifdef __BEOS__ | |
| 391 static char PtyProto[] = "/dev/pt/XY"; | |
| 392 static char TtyProto[] = "/dev/tt/XY"; | |
| 393 # else | |
| 394 static char PtyProto[] = "/dev/ptyXY"; | |
| 395 static char TtyProto[] = "/dev/ttyXY"; | |
| 396 # endif | |
| 397 # endif | |
| 398 | |
| 399 int | |
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400 mch_openpty(char **ttyn) |
| 7 | 401 { |
| 402 char *p, *q, *l, *d; | |
| 403 int f; | |
| 404 /* used for opening a new pty-pair: */ | |
| 405 static char PtyName[32]; | |
| 406 static char TtyName[32]; | |
| 407 | |
| 408 strcpy(PtyName, PtyProto); | |
| 409 strcpy(TtyName, TtyProto); | |
| 410 for (p = PtyName; *p != 'X'; p++) | |
| 411 ; | |
| 412 for (q = TtyName; *q != 'X'; q++) | |
| 413 ; | |
| 414 for (l = PTYRANGE0; (*p = *l) != '\0'; l++) | |
| 415 { | |
| 416 for (d = PTYRANGE1; (p[1] = *d) != '\0'; d++) | |
| 417 { | |
| 418 if ((f = open(PtyName, O_RDWR | O_NOCTTY | O_EXTRA, 0)) == -1) | |
| 419 continue; | |
| 420 q[0] = *l; | |
| 421 q[1] = *d; | |
| 1076 | 422 if (geteuid() != ROOT_UID && mch_access(TtyName, R_OK | W_OK)) |
| 7 | 423 { |
| 424 close(f); | |
| 425 continue; | |
| 426 } | |
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427 #if defined(SUN_SYSTEM) && defined(TIOCGPGRP) && !defined(SUNOS3) |
| 7 | 428 /* Hack to ensure that the slave side of the pty is |
| 429 * unused. May not work in anything other than SunOS4.1 | |
| 430 */ | |
| 431 { | |
| 432 int pgrp; | |
| 433 | |
| 434 /* tcgetpgrp does not work (uses TIOCGETPGRP)! */ | |
| 435 if (ioctl(f, TIOCGPGRP, (char *)&pgrp) != -1 || errno != EIO) | |
| 436 { | |
| 437 close(f); | |
| 438 continue; | |
| 439 } | |
| 440 } | |
| 441 #endif | |
| 442 initmaster(f); | |
| 443 *ttyn = TtyName; | |
| 444 return f; | |
| 445 } | |
| 446 } | |
| 447 return -1; | |
| 448 } | |
| 449 #endif | |
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450 |
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451 /* |
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452 * Call isatty(fd), except for SunOS where it's done differently. |
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453 */ |
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454 int |
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455 mch_isatty(int fd) |
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456 { |
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457 # if defined(I_STR) && defined(HAVE_SYS_PTMS_H) && defined(HAVE_SVR4_PTYS) \ |
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458 && defined(SUN_SYSTEM) |
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459 // On SunOS, isatty() for /dev/ptmx returns false or sometimes can hang up |
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460 // in the inner ioctl(), and therefore first determine whether "fd" is a |
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461 // master device. |
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462 struct strioctl istr; |
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463 |
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464 istr.ic_cmd = ISPTM; |
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465 istr.ic_timout = 0; |
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466 istr.ic_dp = NULL; |
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467 istr.ic_len = 0; |
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468 |
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469 if (ioctl(fd, I_STR, &istr) == 0) |
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470 // Trick: return 2 in order to advice the caller that "fd" is a master |
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471 // device. cf. src/os_unix.c:get_tty_fd() |
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472 return 2; |
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473 # endif |
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474 return isatty(fd); |
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475 } |
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476 |
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477 #endif /* FEAT_GUI || FEAT_JOB_CHANNEL */ |