Mercurial > vim
annotate src/os_unix.h @ 30094:ab563fdf3735 v9.0.0383
patch 9.0.0383: Coverity complains about unused value
Commit: https://github.com/vim/vim/commit/963ab26842be22c0d210c3e950fecac28578f8be
Author: Bram Moolenaar <Bram@vim.org>
Date: Mon Sep 5 10:55:27 2022 +0100
patch 9.0.0383: Coverity complains about unused value
Problem: Coverity complains about unused value.
Solution: Use the value.
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Mon, 05 Sep 2022 12:00:08 +0200 |
| parents | 3276298c67c5 |
| children | c0b3e3c7786c |
| 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 */ | |
| 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 | |
|
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36 #ifdef __CYGWIN__ |
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37 # define WIN32UNIX // Compiling for Win32 using Unix files. |
| 7 | 38 # define BINARY_FILE_IO |
| 585 | 39 |
| 40 # define CASE_INSENSITIVE_FILENAME | |
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41 # define USE_FNAME_CASE // Fix filename case differences. |
| 7 | 42 #endif |
| 43 | |
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44 // On AIX 4.2 there is a conflicting prototype for ioctl() in stropts.h and |
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45 // unistd.h. This hack should fix that (suggested by Jeff George). |
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46 // But on AIX 4.3 it's alright (suggested by Jake Hamby). |
| 7 | 47 #if defined(FEAT_GUI) && defined(_AIX) && !defined(_AIX43) && !defined(_NO_PROTO) |
| 48 # define _NO_PROTO | |
| 49 #endif | |
| 50 | |
| 51 #ifdef HAVE_UNISTD_H | |
| 1879 | 52 # include <unistd.h> |
| 7 | 53 #endif |
| 54 | |
| 55 #ifdef HAVE_LIBC_H | |
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56 # include <libc.h> // for NeXT |
| 7 | 57 #endif |
| 58 | |
| 59 #ifdef HAVE_SYS_PARAM_H | |
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60 # include <sys/param.h> // defines BSD, if it's a BSD system |
| 7 | 61 #endif |
| 62 | |
| 63 /* | |
| 64 * Using getcwd() is preferred, because it checks for a buffer overflow. | |
| 65 * Don't use getcwd() on systems do use system("sh -c pwd"). There is an | |
| 66 * autoconf check for this. | |
| 67 * Use getcwd() anyway if getwd() isn't present. | |
| 68 */ | |
| 69 #if defined(HAVE_GETCWD) && !(defined(BAD_GETCWD) && defined(HAVE_GETWD)) | |
| 70 # define USE_GETCWD | |
| 71 #endif | |
| 72 | |
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73 // always use unlink() to remove files |
| 7 | 74 #ifndef PROTO |
| 75 # ifdef VMS | |
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76 # define vim_mkdir(x, y) mkdir((char *)vms_fixfilename(x), y) |
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77 # define mch_rmdir(x) delete((char *)vms_fixfilename(x)) |
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78 # define mch_remove(x) delete((char *)vms_fixfilename(x)) |
| 7 | 79 # else |
| 80 # define vim_mkdir(x, y) mkdir((char *)(x), y) | |
| 81 # define mch_rmdir(x) rmdir((char *)(x)) | |
| 82 # define mch_remove(x) unlink((char *)(x)) | |
| 83 # endif | |
| 84 #endif | |
| 85 | |
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86 // The number of arguments to a signal handler is configured here. |
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87 // It used to be a long list of almost all systems. Any system that doesn't |
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88 // have an argument??? |
| 7 | 89 #define SIGHASARG |
| 90 | |
| 91 #ifdef SIGHASARG | |
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92 # define SIGPROTOARG (int) |
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93 # define SIGDEFARG(s) (int s UNUSED) |
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94 # define SIGDUMMYARG 0 |
| 7 | 95 #else |
| 96 # define SIGPROTOARG (void) | |
| 97 # define SIGDEFARG(s) () | |
| 98 # define SIGDUMMYARG | |
| 99 #endif | |
| 100 | |
| 101 #ifdef HAVE_DIRENT_H | |
| 102 # include <dirent.h> | |
| 103 # ifndef NAMLEN | |
| 104 # define NAMLEN(dirent) strlen((dirent)->d_name) | |
| 105 # endif | |
| 106 #else | |
| 107 # define dirent direct | |
| 108 # define NAMLEN(dirent) (dirent)->d_namlen | |
| 109 # if HAVE_SYS_NDIR_H | |
| 110 # include <sys/ndir.h> | |
| 111 # endif | |
| 112 # if HAVE_SYS_DIR_H | |
| 113 # include <sys/dir.h> | |
| 114 # endif | |
| 115 # if HAVE_NDIR_H | |
| 116 # include <ndir.h> | |
| 117 # endif | |
| 118 #endif | |
| 119 | |
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120 #include <time.h> |
| 7 | 121 #ifdef HAVE_SYS_TIME_H |
| 122 # include <sys/time.h> | |
| 123 #endif | |
| 124 | |
| 125 #include <signal.h> | |
| 126 | |
| 127 #if defined(DIRSIZ) && !defined(MAXNAMLEN) | |
| 128 # define MAXNAMLEN DIRSIZ | |
| 129 #endif | |
| 130 | |
| 131 #if defined(UFS_MAXNAMLEN) && !defined(MAXNAMLEN) | |
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132 # define MAXNAMLEN UFS_MAXNAMLEN // for dynix/ptx |
| 7 | 133 #endif |
| 134 | |
| 135 #if defined(NAME_MAX) && !defined(MAXNAMLEN) | |
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136 # define MAXNAMLEN NAME_MAX // for Linux before .99p3 |
| 7 | 137 #endif |
| 138 | |
| 139 /* | |
| 140 * Note: if MAXNAMLEN has the wrong value, you will get error messages | |
| 141 * for not being able to open the swap file. | |
| 142 */ | |
| 143 #if !defined(MAXNAMLEN) | |
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144 # define MAXNAMLEN 512 // for all other Unix |
| 7 | 145 #endif |
| 146 | |
| 147 #define BASENAMELEN (MAXNAMLEN - 5) | |
| 148 | |
| 149 #ifdef HAVE_PWD_H | |
| 150 # include <pwd.h> | |
| 151 #endif | |
| 152 | |
| 153 #if (defined(HAVE_SYS_RESOURCE_H) && defined(HAVE_GETRLIMIT)) \ | |
| 154 || (defined(HAVE_SYS_SYSINFO_H) && defined(HAVE_SYSINFO)) \ | |
| 155 || defined(HAVE_SYSCTL) || defined(HAVE_SYSCONF) | |
| 156 # define HAVE_TOTAL_MEM | |
| 157 #endif | |
| 158 | |
| 3927 | 159 |
| 160 #ifndef PROTO | |
| 161 | |
| 7 | 162 #ifdef VMS |
| 819 | 163 # include <unixio.h> |
| 164 # include <unixlib.h> | |
| 165 # include <signal.h> | |
| 166 # include <file.h> | |
| 167 # include <ssdef.h> | |
| 168 # include <descrip.h> | |
| 169 # include <libclidef.h> | |
| 170 # include <lnmdef.h> | |
| 171 # include <psldef.h> | |
| 172 # include <prvdef.h> | |
| 173 # include <dvidef.h> | |
| 174 # include <dcdef.h> | |
| 175 # include <stsdef.h> | |
| 176 # include <iodef.h> | |
| 177 # include <ttdef.h> | |
| 178 # include <tt2def.h> | |
| 179 # include <jpidef.h> | |
| 180 # include <rms.h> | |
| 181 # include <trmdef.h> | |
| 182 # include <string.h> | |
| 183 # include <starlet.h> | |
| 184 # include <socket.h> | |
| 185 # include <lib$routines.h> | |
| 5541 | 186 # include <libdef.h> |
| 187 # include <libdtdef.h> | |
| 819 | 188 |
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189 # if defined(FEAT_GUI_MOTIF) |
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190 # define XFree XFREE |
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191 # define XmRepTypeInstallTearOffModelCon XMREPTYPEINSTALLTEAROFFMODELCON |
| 819 | 192 # endif |
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193 #endif // VMS |
| 7 | 194 |
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195 #ifdef HAVE_FLOCK |
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196 # include <sys/file.h> |
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197 #endif |
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198 |
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199 #endif // PROTO |
| 3927 | 200 |
| 201 #ifdef VMS | |
| 7 | 202 typedef struct dsc$descriptor DESC; |
| 203 #endif | |
| 204 | |
| 205 /* | |
| 206 * Unix system-dependent file names | |
| 207 */ | |
| 208 #ifndef SYS_VIMRC_FILE | |
| 209 # define SYS_VIMRC_FILE "$VIM/vimrc" | |
| 210 #endif | |
| 211 #ifndef SYS_GVIMRC_FILE | |
| 212 # define SYS_GVIMRC_FILE "$VIM/gvimrc" | |
| 213 #endif | |
| 214 #ifndef DFLT_HELPFILE | |
| 215 # define DFLT_HELPFILE "$VIMRUNTIME/doc/help.txt" | |
| 216 #endif | |
| 217 #ifndef FILETYPE_FILE | |
| 218 # define FILETYPE_FILE "filetype.vim" | |
| 219 #endif | |
| 220 #ifndef FTPLUGIN_FILE | |
| 221 # define FTPLUGIN_FILE "ftplugin.vim" | |
| 222 #endif | |
| 223 #ifndef INDENT_FILE | |
| 224 # define INDENT_FILE "indent.vim" | |
| 225 #endif | |
| 226 #ifndef FTOFF_FILE | |
| 227 # define FTOFF_FILE "ftoff.vim" | |
| 228 #endif | |
| 229 #ifndef FTPLUGOF_FILE | |
| 230 # define FTPLUGOF_FILE "ftplugof.vim" | |
| 231 #endif | |
| 232 #ifndef INDOFF_FILE | |
| 233 # define INDOFF_FILE "indoff.vim" | |
| 234 #endif | |
| 235 #ifndef SYS_MENU_FILE | |
| 236 # define SYS_MENU_FILE "$VIMRUNTIME/menu.vim" | |
| 237 #endif | |
| 238 | |
| 239 #ifndef USR_EXRC_FILE | |
| 240 # ifdef VMS | |
| 241 # define USR_EXRC_FILE "sys$login:.exrc" | |
| 242 # else | |
| 243 # define USR_EXRC_FILE "$HOME/.exrc" | |
| 244 # endif | |
| 245 #endif | |
| 246 | |
| 247 #if !defined(USR_EXRC_FILE2) && defined(VMS) | |
| 248 # define USR_EXRC_FILE2 "sys$login:_exrc" | |
| 249 #endif | |
| 250 | |
| 251 #ifndef USR_VIMRC_FILE | |
| 252 # ifdef VMS | |
| 253 # define USR_VIMRC_FILE "sys$login:.vimrc" | |
| 254 # else | |
| 255 # define USR_VIMRC_FILE "$HOME/.vimrc" | |
| 256 # endif | |
| 257 #endif | |
| 258 | |
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259 |
| 6783 | 260 #if !defined(USR_VIMRC_FILE2) |
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261 # ifdef VMS |
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262 # define USR_VIMRC_FILE2 "sys$login:vimfiles/vimrc" |
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263 # else |
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264 # define USR_VIMRC_FILE2 "~/.vim/vimrc" |
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265 # endif |
| 7 | 266 #endif |
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267 |
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268 #if !defined(USR_VIMRC_FILE3) && defined(VMS) |
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269 # define USR_VIMRC_FILE3 "sys$login:_vimrc" |
| 7 | 270 #endif |
| 271 | |
| 272 #ifndef USR_GVIMRC_FILE | |
| 273 # ifdef VMS | |
| 274 # define USR_GVIMRC_FILE "sys$login:.gvimrc" | |
| 275 # else | |
| 276 # define USR_GVIMRC_FILE "$HOME/.gvimrc" | |
| 277 # endif | |
| 278 #endif | |
| 279 | |
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280 #ifndef USR_GVIMRC_FILE2 |
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281 # ifdef VMS |
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282 # define USR_GVIMRC_FILE2 "sys$login:vimfiles/gvimrc" |
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283 # else |
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284 # define USR_GVIMRC_FILE2 "~/.vim/gvimrc" |
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285 # endif |
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286 #endif |
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287 |
| 7 | 288 #ifdef VMS |
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289 # ifndef USR_GVIMRC_FILE3 |
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290 # define USR_GVIMRC_FILE3 "sys$login:_gvimrc" |
| 7 | 291 # endif |
| 292 #endif | |
| 293 | |
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294 #ifndef VIM_DEFAULTS_FILE |
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295 # define VIM_DEFAULTS_FILE "$VIMRUNTIME/defaults.vim" |
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296 #endif |
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297 |
| 7 | 298 #ifndef EVIM_FILE |
| 299 # define EVIM_FILE "$VIMRUNTIME/evim.vim" | |
| 300 #endif | |
| 301 | |
| 302 #ifdef FEAT_VIMINFO | |
| 303 # ifndef VIMINFO_FILE | |
| 304 # ifdef VMS | |
| 305 # define VIMINFO_FILE "sys$login:.viminfo" | |
| 306 # else | |
| 307 # define VIMINFO_FILE "$HOME/.viminfo" | |
| 308 # endif | |
| 309 # endif | |
| 310 # if !defined(VIMINFO_FILE2) && defined(VMS) | |
| 311 # define VIMINFO_FILE2 "sys$login:_viminfo" | |
| 312 # endif | |
| 313 #endif | |
| 314 | |
| 315 #ifndef EXRC_FILE | |
| 316 # define EXRC_FILE ".exrc" | |
| 317 #endif | |
| 318 | |
| 319 #ifndef VIMRC_FILE | |
| 320 # define VIMRC_FILE ".vimrc" | |
| 321 #endif | |
| 322 | |
| 323 #ifdef FEAT_GUI | |
| 324 # ifndef GVIMRC_FILE | |
| 325 # define GVIMRC_FILE ".gvimrc" | |
| 326 # endif | |
| 327 #endif | |
| 328 | |
| 329 #ifndef SYNTAX_FNAME | |
| 330 # define SYNTAX_FNAME "$VIMRUNTIME/syntax/%s.vim" | |
| 331 #endif | |
| 332 | |
| 333 #ifndef DFLT_BDIR | |
|
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334 # ifdef VMS |
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335 # define DFLT_BDIR "./,sys$login:,tmp:" |
| 7 | 336 # else |
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337 # define DFLT_BDIR ".,~/tmp,~/" // default for 'backupdir' |
| 7 | 338 # endif |
| 339 #endif | |
| 340 | |
| 341 #ifndef DFLT_DIR | |
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342 # ifdef VMS |
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343 # define DFLT_DIR "./,sys$login:,tmp:" |
| 7 | 344 # else |
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345 # define DFLT_DIR ".,~/tmp,/var/tmp,/tmp" // default for 'directory' |
| 7 | 346 # endif |
| 347 #endif | |
| 348 | |
| 349 #ifndef DFLT_VDIR | |
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350 # ifdef VMS |
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351 # define DFLT_VDIR "sys$login:vimfiles/view" |
| 7 | 352 # else |
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353 # define DFLT_VDIR "$HOME/.vim/view" // default for 'viewdir' |
| 7 | 354 # endif |
| 355 #endif | |
| 356 | |
| 357 #define DFLT_ERRORFILE "errors.err" | |
| 358 | |
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359 #ifndef DFLT_RUNTIMEPATH |
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360 |
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361 # ifdef VMS |
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362 # define DFLT_RUNTIMEPATH "sys$login:vimfiles,$VIM/vimfiles,$VIMRUNTIME,$VIM/vimfiles/after,sys$login:vimfiles/after" |
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363 # define CLEAN_RUNTIMEPATH "$VIM/vimfiles,$VIMRUNTIME,$VIM/vimfiles/after" |
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364 # else |
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365 # ifdef RUNTIME_GLOBAL |
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366 # ifdef RUNTIME_GLOBAL_AFTER |
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367 # define DFLT_RUNTIMEPATH "~/.vim," RUNTIME_GLOBAL ",$VIMRUNTIME," RUNTIME_GLOBAL_AFTER ",~/.vim/after" |
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368 # define CLEAN_RUNTIMEPATH RUNTIME_GLOBAL ",$VIMRUNTIME," RUNTIME_GLOBAL_AFTER |
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369 # else |
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370 # define DFLT_RUNTIMEPATH "~/.vim," RUNTIME_GLOBAL ",$VIMRUNTIME," RUNTIME_GLOBAL "/after,~/.vim/after" |
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371 # define CLEAN_RUNTIMEPATH RUNTIME_GLOBAL ",$VIMRUNTIME," RUNTIME_GLOBAL "/after" |
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372 # endif |
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373 # else |
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374 # define DFLT_RUNTIMEPATH "~/.vim,$VIM/vimfiles,$VIMRUNTIME,$VIM/vimfiles/after,~/.vim/after" |
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375 # define CLEAN_RUNTIMEPATH "$VIM/vimfiles,$VIMRUNTIME,$VIM/vimfiles/after" |
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376 # endif |
| 7 | 377 # endif |
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378 |
| 7 | 379 #endif |
| 380 | |
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381 #ifdef VMS |
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382 # ifndef VAX |
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383 # define VMS_TEMPNAM // to fix default .LIS extension |
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384 # endif |
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385 # define TEMPNAME "TMP:v?XXXXXX.txt" |
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386 # define TEMPNAMELEN 28 |
| 7 | 387 #else |
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388 // Try several directories to put the temp files. |
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389 # define TEMPDIRNAMES "$TMPDIR", "/tmp", ".", "$HOME" |
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390 # define TEMPNAMELEN 256 |
| 7 | 391 #endif |
| 392 | |
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393 // Special wildcards that need to be handled by the shell |
| 7 | 394 #define SPECIAL_WILDCHAR "`'{" |
| 395 | |
| 396 /* | |
| 397 * Unix has plenty of memory, use large buffers | |
| 398 */ | |
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399 #define CMDBUFFSIZE 1024 // size of the command processing buffer |
| 1611 | 400 |
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401 // Use the system path length if it makes sense. |
| 1611 | 402 #if defined(PATH_MAX) && (PATH_MAX > 1000) |
| 403 # define MAXPATHL PATH_MAX | |
| 404 #else | |
| 405 # define MAXPATHL 1024 | |
| 406 #endif | |
| 7 | 407 |
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408 #define CHECK_INODE // used when checking if a swap file already |
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409 // exists for a file |
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410 #ifdef VMS // Use less memory because of older systems |
| 7 | 411 # ifndef DFLT_MAXMEM |
| 412 # define DFLT_MAXMEM (2*1024) | |
| 413 # endif | |
| 414 # ifndef DFLT_MAXMEMTOT | |
| 415 # define DFLT_MAXMEMTOT (5*1024) | |
| 416 # endif | |
| 417 #else | |
| 418 # ifndef DFLT_MAXMEM | |
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419 # define DFLT_MAXMEM (5*1024) // use up to 5 Mbyte for a buffer |
| 7 | 420 # endif |
| 421 # ifndef DFLT_MAXMEMTOT | |
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422 # define DFLT_MAXMEMTOT (10*1024) // use up to 10 Mbyte for Vim |
| 7 | 423 # endif |
| 424 #endif | |
| 425 | |
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426 // memmove() is not present on all systems, use memmove, bcopy or memcpy. |
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427 // Some systems have (void *) arguments, some (char *). If we use (char *) it |
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428 // works for all |
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429 #if defined(USEMEMMOVE) || (!defined(USEBCOPY) && !defined(USEMEMCPY)) |
| 7 | 430 # define mch_memmove(to, from, len) memmove((char *)(to), (char *)(from), len) |
| 431 #else | |
| 432 # ifdef USEBCOPY | |
| 433 # define mch_memmove(to, from, len) bcopy((char *)(from), (char *)(to), len) | |
| 434 # else | |
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435 // ifdef USEMEMCPY |
| 7 | 436 # define mch_memmove(to, from, len) memcpy((char *)(to), (char *)(from), len) |
| 437 # endif | |
| 438 #endif | |
| 439 | |
| 440 #ifndef PROTO | |
| 441 # ifdef HAVE_RENAME | |
| 442 # define mch_rename(src, dst) rename(src, dst) | |
| 443 # else | |
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444 int mch_rename(const char *src, const char *dest); |
| 7 | 445 # endif |
| 446 # ifndef VMS | |
| 447 # ifdef __MVS__ | |
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448 // on OS390 Unix getenv() doesn't return a pointer to persistent |
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449 // storage -> use __getenv() |
| 7 | 450 # define mch_getenv(x) (char_u *)__getenv((char *)(x)) |
| 451 # else | |
| 452 # define mch_getenv(x) (char_u *)getenv((char *)(x)) | |
| 453 # endif | |
| 454 # define mch_setenv(name, val, x) setenv(name, val, x) | |
| 455 # endif | |
| 456 #endif | |
| 457 | |
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458 // Note: Some systems need both string.h and strings.h (Savage). However, |
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459 // some systems can't handle both, only use string.h in that case. |
| 7 | 460 #ifdef HAVE_STRING_H |
| 461 # include <string.h> | |
| 462 #endif | |
| 463 #if defined(HAVE_STRINGS_H) && !defined(NO_STRINGS_WITH_STRING_H) | |
| 464 # include <strings.h> | |
| 465 #endif | |
| 466 | |
| 467 #if defined(HAVE_SETJMP_H) | |
| 468 # include <setjmp.h> | |
| 469 # ifdef HAVE_SIGSETJMP | |
| 470 # define JMP_BUF sigjmp_buf | |
| 471 # define SETJMP(x) sigsetjmp((x), 1) | |
| 472 # define LONGJMP siglongjmp | |
| 473 # else | |
| 474 # define JMP_BUF jmp_buf | |
| 475 # define SETJMP(x) setjmp(x) | |
| 476 # define LONGJMP longjmp | |
| 477 # endif | |
| 478 #endif | |
| 479 | |
| 5743 | 480 #ifndef HAVE_DUP |
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481 # define HAVE_DUP // have dup() |
| 5743 | 482 #endif |
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483 #define HAVE_ST_MODE // have stat.st_mode |
| 7 | 484 |
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485 // We have three kinds of ACL support. |
| 7 | 486 #define HAVE_ACL (HAVE_POSIX_ACL || HAVE_SOLARIS_ACL || HAVE_AIX_ACL) |