src/os_unix.h

   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  */
   8
   9 /*
  10  * NextStep has a problem with configure, undefine a few things:
  11  */
  12 #ifdef NeXT
  13 # ifdef HAVE_UTIME
  14 #  undef HAVE_UTIME
  15 # endif
  16 # ifdef HAVE_SYS_UTSNAME_H
  17 #  undef HAVE_SYS_UTSNAME_H
  18 # endif
  19 #endif
  20
  21 #include <stdio.h>
  22 #include <ctype.h>
  23
  24 #ifdef VAXC
  25 # include <types.h>
  26 # include <stat.h>
  27 #else
  28 # include <sys/types.h>
  29 # include <sys/stat.h>
  30 #endif
  31
  32 #ifdef HAVE_STDLIB_H
  33 # include <stdlib.h>
  34 #endif
  35
  36 #ifdef __EMX__
  37 # define HAVE_TOTAL_MEM
  38 #endif
  39
  40 #if defined(__CYGWIN__) || defined(__CYGWIN32__)
  41 # define WIN32UNIX      /* Compiling for Win32 using Unix files. */
  42 # define BINARY_FILE_IO
  43
  44 # define CASE_INSENSITIVE_FILENAME
  45 # define USE_FNAME_CASE /* Fix filename case differences. */
  46 #endif
  47
  48 /* On AIX 4.2 there is a conflicting prototype for ioctl() in stropts.h and
  49  * unistd.h.  This hack should fix that (suggested by Jeff George).
  50  * But on AIX 4.3 it's alright (suggested by Jake Hamby). */
  51 #if defined(FEAT_GUI) && defined(_AIX) && !defined(_AIX43) && !defined(_NO_PROTO)
  52 # define _NO_PROTO
  53 #endif
  54
  55 #ifdef HAVE_UNISTD_H
  56 # include <unistd.h>
  57 #endif
  58
  59 #ifdef HAVE_LIBC_H
  60 # include <libc.h>                  /* for NeXT */
  61 #endif
  62
  63 #ifdef HAVE_SYS_PARAM_H
  64 # include <sys/param.h>     /* defines BSD, if it's a BSD system */
  65 #endif
  66
  67 /*
  68  * Sun defines FILE on SunOS 4.x.x, Solaris has a typedef for FILE
  69  */
  70 #if defined(sun) && !defined(FILE)
  71 # define SOLARIS
  72 #endif
  73
  74 /*
  75  * Using getcwd() is preferred, because it checks for a buffer overflow.
  76  * Don't use getcwd() on systems do use system("sh -c pwd").  There is an
  77  * autoconf check for this.
  78  * Use getcwd() anyway if getwd() isn't present.
  79  */
  80 #if defined(HAVE_GETCWD) && !(defined(BAD_GETCWD) && defined(HAVE_GETWD))
  81 # define USE_GETCWD
  82 #endif
  83
  84 #ifndef __ARGS
  85     /* The AIX VisualAge cc compiler defines __EXTENDED__ instead of __STDC__
  86      * because it includes pre-ansi features. */
  87 # if defined(__STDC__) || defined(__GNUC__) || defined(__EXTENDED__)
  88 #  define __ARGS(x) x
  89 # else
  90 #  define __ARGS(x) ()
  91 # endif
  92 #endif
  93
  94 /* always use unlink() to remove files */
  95 #ifndef PROTO
  96 # ifdef VMS
  97 #  define mch_remove(x) delete((char *)(x))
  98 #  define vim_mkdir(x, y) mkdir((char *)(x), y)
  99 #  ifdef VAX
 100 #  else
 101 #   define mch_rmdir(x) rmdir((char *)(x))
 102 #  endif
 103 # else
 104 #  define vim_mkdir(x, y) mkdir((char *)(x), y)
 105 #  define mch_rmdir(x) rmdir((char *)(x))
 106 #  define mch_remove(x) unlink((char *)(x))
 107 # endif
 108 #endif
 109
 110 /* The number of arguments to a signal handler is configured here. */
 111 /* It used to be a long list of almost all systems. Any system that doesn't
 112  * have an argument??? */
 113 #define SIGHASARG
 114
 115 /* List 3 arg systems here. I guess __sgi, please test and correct me. jw. */
 116 #if defined(__sgi) && defined(HAVE_SIGCONTEXT)
 117 # define SIGHAS3ARGS
 118 #endif
 119
 120 #ifdef SIGHASARG
 121 # ifdef SIGHAS3ARGS
 122 #  define SIGPROTOARG   (int, int, struct sigcontext *)
 123 #  define SIGDEFARG(s)  (s, sig2, scont) int s, sig2; struct sigcontext *scont;
 124 #  define SIGDUMMYARG   0, 0, (struct sigcontext *)0
 125 # else
 126 #  define SIGPROTOARG   (int)
 127 #  define SIGDEFARG(s)  (s) int s UNUSED;
 128 #  define SIGDUMMYARG   0
 129 # endif
 130 #else
 131 # define SIGPROTOARG   (void)
 132 # define SIGDEFARG(s)  ()
 133 # define SIGDUMMYARG
 134 #endif
 135
 136 #ifdef HAVE_DIRENT_H
 137 # include <dirent.h>
 138 # ifndef NAMLEN
 139 #  define NAMLEN(dirent) strlen((dirent)->d_name)
 140 # endif
 141 #else
 142 # define dirent direct
 143 # define NAMLEN(dirent) (dirent)->d_namlen
 144 # if HAVE_SYS_NDIR_H
 145 #  include <sys/ndir.h>
 146 # endif
 147 # if HAVE_SYS_DIR_H
 148 #  include <sys/dir.h>
 149 # endif
 150 # if HAVE_NDIR_H
 151 #  include <ndir.h>
 152 # endif
 153 #endif
 154
 155 #if !defined(HAVE_SYS_TIME_H) || defined(TIME_WITH_SYS_TIME)
 156 # include <time.h>          /* on some systems time.h should not be
 157                                included together with sys/time.h */
 158 #endif
 159 #ifdef HAVE_SYS_TIME_H
 160 # include <sys/time.h>
 161 #endif
 162
 163 #include <signal.h>
 164
 165 #if defined(DIRSIZ) && !defined(MAXNAMLEN)
 166 # define MAXNAMLEN DIRSIZ
 167 #endif
 168
 169 #if defined(UFS_MAXNAMLEN) && !defined(MAXNAMLEN)
 170 # define MAXNAMLEN UFS_MAXNAMLEN    /* for dynix/ptx */
 171 #endif
 172
 173 #if defined(NAME_MAX) && !defined(MAXNAMLEN)
 174 # define MAXNAMLEN NAME_MAX         /* for Linux before .99p3 */
 175 #endif
 176
 177 /*
 178  * Note: if MAXNAMLEN has the wrong value, you will get error messages
 179  *       for not being able to open the swap file.
 180  */
 181 #if !defined(MAXNAMLEN)
 182 # define MAXNAMLEN 512              /* for all other Unix */
 183 #endif
 184
 185 #define BASENAMELEN     (MAXNAMLEN - 5)
 186
 187 #ifdef HAVE_ERRNO_H
 188 # include <errno.h>
 189 #endif
 190
 191 #ifdef HAVE_PWD_H
 192 # include <pwd.h>
 193 #endif
 194
 195 #ifdef __COHERENT__
 196 # undef __ARGS
 197 #endif
 198
 199 #if (defined(HAVE_SYS_RESOURCE_H) && defined(HAVE_GETRLIMIT)) \
 200         || (defined(HAVE_SYS_SYSINFO_H) && defined(HAVE_SYSINFO)) \
 201         || defined(HAVE_SYSCTL) || defined(HAVE_SYSCONF)
 202 # define HAVE_TOTAL_MEM
 203 #endif
 204
 205 #ifdef VMS
 206 # include <unixio.h>
 207 # include <unixlib.h>
 208 # include <signal.h>
 209 # include <file.h>
 210 # include <ssdef.h>
 211 # include <descrip.h>
 212 # include <libclidef.h>
 213 # include <lnmdef.h>
 214 # include <psldef.h>
 215 # include <prvdef.h>
 216 # include <dvidef.h>
 217 # include <dcdef.h>
 218 # include <stsdef.h>
 219 # include <iodef.h>
 220 # include <ttdef.h>
 221 # include <tt2def.h>
 222 # include <jpidef.h>
 223 # include <rms.h>
 224 # include <trmdef.h>
 225 # include <string.h>
 226 # include <starlet.h>
 227 # include <socket.h>
 228 # include <lib$routines.h>
 229
 230 # ifdef FEAT_GUI_GTK
 231 #  include "gui_gtk_vms.h"
 232 # endif
 233
 234 typedef struct dsc$descriptor   DESC;
 235 #endif
 236
 237 /*
 238  * Unix system-dependent file names
 239  */
 240 #ifndef SYS_VIMRC_FILE
 241 # define SYS_VIMRC_FILE "$VIM/vimrc"
 242 #endif
 243 #ifndef SYS_GVIMRC_FILE
 244 # define SYS_GVIMRC_FILE "$VIM/gvimrc"
 245 #endif
 246 #ifndef DFLT_HELPFILE
 247 # define DFLT_HELPFILE  "$VIMRUNTIME/doc/help.txt"
 248 #endif
 249 #ifndef FILETYPE_FILE
 250 # define FILETYPE_FILE  "filetype.vim"
 251 #endif
 252 #ifndef FTPLUGIN_FILE
 253 # define FTPLUGIN_FILE  "ftplugin.vim"
 254 #endif
 255 #ifndef INDENT_FILE
 256 # define INDENT_FILE    "indent.vim"
 257 #endif
 258 #ifndef FTOFF_FILE
 259 # define FTOFF_FILE     "ftoff.vim"
 260 #endif
 261 #ifndef FTPLUGOF_FILE
 262 # define FTPLUGOF_FILE  "ftplugof.vim"
 263 #endif
 264 #ifndef INDOFF_FILE
 265 # define INDOFF_FILE    "indoff.vim"
 266 #endif
 267 #ifndef SYS_MENU_FILE
 268 # define SYS_MENU_FILE  "$VIMRUNTIME/menu.vim"
 269 #endif
 270
 271 #ifndef USR_EXRC_FILE
 272 # ifdef VMS
 273 #  define USR_EXRC_FILE "sys$login:.exrc"
 274 # else
 275 #  define USR_EXRC_FILE "$HOME/.exrc"
 276 # endif
 277 #endif
 278
 279 #if !defined(USR_EXRC_FILE2) && defined(OS2)
 280 # define USR_EXRC_FILE2 "$VIM/.exrc"
 281 #endif
 282 #if !defined(USR_EXRC_FILE2) && defined(VMS)
 283 # define USR_EXRC_FILE2 "sys$login:_exrc"
 284 #endif
 285
 286 #ifndef USR_VIMRC_FILE
 287 # ifdef VMS
 288 # define USR_VIMRC_FILE  "sys$login:.vimrc"
 289 # else
 290 #  define USR_VIMRC_FILE "$HOME/.vimrc"
 291 # endif
 292 #endif
 293
 294 #if !defined(USR_VIMRC_FILE2) && defined(OS2)
 295 # define USR_VIMRC_FILE2 "$VIM/.vimrc"
 296 #endif
 297 #if !defined(USR_VIMRC_FILE2) && defined(VMS)
 298 # define USR_VIMRC_FILE2 "sys$login:_vimrc"
 299 #endif
 300
 301 #ifndef USR_GVIMRC_FILE
 302 # ifdef VMS
 303 #  define USR_GVIMRC_FILE "sys$login:.gvimrc"
 304 # else
 305 #  define USR_GVIMRC_FILE "$HOME/.gvimrc"
 306 # endif
 307 #endif
 308
 309 #ifdef VMS
 310 # ifndef USR_GVIMRC_FILE2
 311 #  define USR_GVIMRC_FILE2  "sys$login:_gvimrc"
 312 # endif
 313 #endif
 314
 315 #ifndef EVIM_FILE
 316 # define EVIM_FILE      "$VIMRUNTIME/evim.vim"
 317 #endif
 318
 319 #ifdef FEAT_VIMINFO
 320 # ifndef VIMINFO_FILE
 321 #  ifdef VMS
 322 #   define VIMINFO_FILE  "sys$login:.viminfo"
 323 #  else
 324 #   define VIMINFO_FILE "$HOME/.viminfo"
 325 #  endif
 326 # endif
 327 # if !defined(VIMINFO_FILE2) && defined(OS2)
 328 #  define VIMINFO_FILE2 "$VIM/.viminfo"
 329 # endif
 330 # if !defined(VIMINFO_FILE2) && defined(VMS)
 331 #  define VIMINFO_FILE2 "sys$login:_viminfo"
 332 # endif
 333 #endif
 334
 335 #ifndef EXRC_FILE
 336 # define EXRC_FILE      ".exrc"
 337 #endif
 338
 339 #ifndef VIMRC_FILE
 340 # define VIMRC_FILE     ".vimrc"
 341 #endif
 342
 343 #ifdef FEAT_GUI
 344 # ifndef GVIMRC_FILE
 345 #  define GVIMRC_FILE   ".gvimrc"
 346 # endif
 347 #endif
 348
 349 #ifndef SYNTAX_FNAME
 350 # define SYNTAX_FNAME   "$VIMRUNTIME/syntax/%s.vim"
 351 #endif
 352
 353 #ifndef DFLT_BDIR
 354 # ifdef OS2
 355 #  define DFLT_BDIR     ".,c:/tmp,~/tmp,~/"
 356 # else
 357 #  ifdef VMS
 358 #   define DFLT_BDIR    "./,sys$login:,tmp:"
 359 #  else
 360 #   define DFLT_BDIR    ".,~/tmp,~/"    /* default for 'backupdir' */
 361 #  endif
 362 # endif
 363 #endif
 364
 365 #ifndef DFLT_UDIR
 366 # ifdef OS2
 367 #  define DFLT_UDIR     "$HOME/vimfiles/undo"
 368 # else
 369 #  ifdef VMS
 370 #   define DFLT_UDIR     "$HOME/vimfiles/undo"
 371 #  else
 372 #   define DFLT_UDIR    "$HOME/.vim/undo"    /* default for 'undodir' */
 373 #  endif
 374 # endif
 375 #endif
 376
 377 #ifndef DFLT_DIR
 378 # ifdef OS2
 379 #  define DFLT_DIR      ".,~/tmp,c:/tmp,/tmp"
 380 # else
 381 #  ifdef VMS
 382 #   define DFLT_DIR     "./,sys$login:,tmp:"
 383 #  else
 384 #   define DFLT_DIR     ".,~/tmp,/var/tmp,/tmp" /* default for 'directory' */
 385 #  endif
 386 # endif
 387 #endif
 388
 389 #ifndef DFLT_VDIR
 390 # ifdef OS2
 391 #  define DFLT_VDIR     "$VIM/vimfiles/view"
 392 # else
 393 #  ifdef VMS
 394 #   define DFLT_VDIR    "sys$login:vimfiles/view"
 395 #  else
 396 #   define DFLT_VDIR    "$HOME/.vim/view"       /* default for 'viewdir' */
 397 #  endif
 398 # endif
 399 #endif
 400
 401 #define DFLT_ERRORFILE          "errors.err"
 402
 403 #ifdef OS2
 404 # define DFLT_RUNTIMEPATH       "$HOME/vimfiles,$VIM/vimfiles,$VIMRUNTIME,$VIM/vimfiles/after,$HOME/vimfiles/after"
 405 #else
 406 # ifdef VMS
 407 #  define DFLT_RUNTIMEPATH      "sys$login:vimfiles,$VIM/vimfiles,$VIMRUNTIME,$VIM/vimfiles/after,sys$login:vimfiles/after"
 408 # else
 409 #  ifdef RUNTIME_GLOBAL
 410 #   define DFLT_RUNTIMEPATH     "~/.vim," RUNTIME_GLOBAL ",$VIMRUNTIME," RUNTIME_GLOBAL "/after,~/.vim/after"
 411 #  else
 412 #   define DFLT_RUNTIMEPATH     "~/.vim,$VIM/vimfiles,$VIMRUNTIME,$VIM/vimfiles/after,~/.vim/after"
 413 #  endif
 414 # endif
 415 #endif
 416
 417 #ifdef OS2
 418 /*
 419  * Try several directories to put the temp files.
 420  */
 421 # define TEMPDIRNAMES   "$TMP", "$TEMP", "c:\\TMP", "c:\\TEMP", ""
 422 # define TEMPNAMELEN    128
 423 #else
 424 # ifdef VMS
 425 #  ifndef VAX
 426 #   define VMS_TEMPNAM    /* to fix default .LIS extension */
 427 #  endif
 428 #  define TEMPNAME       "TMP:v?XXXXXX.txt"
 429 #  define TEMPNAMELEN    28
 430 # else
 431 #  define TEMPDIRNAMES  "$TMPDIR", "/tmp", ".", "$HOME"
 432 #  define TEMPNAMELEN    256
 433 # endif
 434 #endif
 435
 436 /* Special wildcards that need to be handled by the shell */
 437 #define SPECIAL_WILDCHAR    "`'{"
 438
 439 #ifndef HAVE_OPENDIR
 440 # define NO_EXPANDPATH
 441 #endif
 442
 443 /*
 444  * Unix has plenty of memory, use large buffers
 445  */
 446 #define CMDBUFFSIZE 1024        /* size of the command processing buffer */
 447
 448 /* Use the system path length if it makes sense. */
 449 #if defined(PATH_MAX) && (PATH_MAX > 1000)
 450 # define MAXPATHL       PATH_MAX
 451 #else
 452 # define MAXPATHL       1024
 453 #endif
 454
 455 #define CHECK_INODE             /* used when checking if a swap file already
 456                                     exists for a file */
 457 #ifdef VMS  /* Use less memory because of older systems  */
 458 # ifndef DFLT_MAXMEM
 459 #  define DFLT_MAXMEM (2*1024)
 460 # endif
 461 # ifndef DFLT_MAXMEMTOT
 462 #  define DFLT_MAXMEMTOT (5*1024)
 463 # endif
 464 #else
 465 # ifndef DFLT_MAXMEM
 466 #  define DFLT_MAXMEM   (5*1024)         /* use up to 5 Mbyte for a buffer */
 467 # endif
 468 # ifndef DFLT_MAXMEMTOT
 469 #  define DFLT_MAXMEMTOT        (10*1024)    /* use up to 10 Mbyte for Vim */
 470 # endif
 471 #endif
 472
 473 /* memmove is not present on all systems, use memmove, bcopy, memcpy or our
 474  * own version */
 475 /* Some systems have (void *) arguments, some (char *). If we use (char *) it
 476  * works for all */
 477 #ifdef USEMEMMOVE
 478 # define mch_memmove(to, from, len) memmove((char *)(to), (char *)(from), len)
 479 #else
 480 # ifdef USEBCOPY
 481 #  define mch_memmove(to, from, len) bcopy((char *)(from), (char *)(to), len)
 482 # else
 483 #  ifdef USEMEMCPY
 484 #   define mch_memmove(to, from, len) memcpy((char *)(to), (char *)(from), len)
 485 #  else
 486 #   define VIM_MEMMOVE      /* found in misc2.c */
 487 #  endif
 488 # endif
 489 #endif
 490
 491 #ifndef PROTO
 492 # ifdef HAVE_RENAME
 493 #  define mch_rename(src, dst) rename(src, dst)
 494 # else
 495 int mch_rename __ARGS((const char *src, const char *dest));
 496 # endif
 497 # ifndef VMS
 498 #  ifdef __MVS__
 499   /* on OS390 Unix getenv() doesn't return a pointer to persistent
 500    * storage -> use __getenv() */
 501 #   define mch_getenv(x) (char_u *)__getenv((char *)(x))
 502 #  else
 503 #   define mch_getenv(x) (char_u *)getenv((char *)(x))
 504 #  endif
 505 #  define mch_setenv(name, val, x) setenv(name, val, x)
 506 # endif
 507 #endif
 508
 509 #if !defined(S_ISDIR) && defined(S_IFDIR)
 510 # define        S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
 511 #endif
 512 #if !defined(S_ISREG) && defined(S_IFREG)
 513 # define        S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
 514 #endif
 515 #if !defined(S_ISBLK) && defined(S_IFBLK)
 516 # define        S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
 517 #endif
 518 #if !defined(S_ISSOCK) && defined(S_IFSOCK)
 519 # define        S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
 520 #endif
 521 #if !defined(S_ISFIFO) && defined(S_IFIFO)
 522 # define        S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
 523 #endif
 524 #if !defined(S_ISCHR) && defined(S_IFCHR)
 525 # define        S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
 526 #endif
 527
 528 /* Note: Some systems need both string.h and strings.h (Savage).  However,
 529  * some systems can't handle both, only use string.h in that case. */
 530 #ifdef HAVE_STRING_H
 531 # include <string.h>
 532 #endif
 533 #if defined(HAVE_STRINGS_H) && !defined(NO_STRINGS_WITH_STRING_H)
 534 # include <strings.h>
 535 #endif
 536
 537 #if defined(HAVE_SETJMP_H)
 538 # include <setjmp.h>
 539 # ifdef HAVE_SIGSETJMP
 540 #  define JMP_BUF sigjmp_buf
 541 #  define SETJMP(x) sigsetjmp((x), 1)
 542 #  define LONGJMP siglongjmp
 543 # else
 544 #  define JMP_BUF jmp_buf
 545 #  define SETJMP(x) setjmp(x)
 546 #  define LONGJMP longjmp
 547 # endif
 548 #endif
 549
 550 #define HAVE_DUP                /* have dup() */
 551 #define HAVE_ST_MODE            /* have stat.st_mode */
 552
 553 /* We have three kinds of ACL support. */
 554 #define HAVE_ACL (HAVE_POSIX_ACL || HAVE_SOLARIS_ACL || HAVE_AIX_ACL)