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