include/wine/port.h

   1 /*
   2  * Wine porting definitions
   3  *
   4  * Copyright 1996 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #ifndef __WINE_WINE_PORT_H
  22 #define __WINE_WINE_PORT_H
  23
  24 #ifndef __WINE_CONFIG_H
  25 # error You must include config.h to use this header
  26 #endif
  27
  28 #ifdef __WINE_BASETSD_H
  29 # error You must include port.h before all other headers
  30 #endif
  31
  32 #ifndef _GNU_SOURCE
  33 # define _GNU_SOURCE  /* for pread/pwrite, isfinite */
  34 #endif
  35 #include <fcntl.h>
  36 #include <math.h>
  37 #include <sys/types.h>
  38 #include <sys/stat.h>
  39 #include <string.h>
  40 #include <stdlib.h>
  41 #ifdef HAVE_UNISTD_H
  42 # include <unistd.h>
  43 #endif
  44
  45
  46 /****************************************************************
  47  * Hard-coded values for the Windows platform
  48  */
  49
  50 #if defined(_WIN32) && !defined(__CYGWIN__)
  51
  52 #include <direct.h>
  53 #include <io.h>
  54 #include <process.h>
  55
  56 #define mkdir(path,mode) mkdir(path)
  57
  58 static inline void *dlopen(const char *name, int flags) { return NULL; }
  59 static inline void *dlsym(void *handle, const char *name) { return NULL; }
  60 static inline int dlclose(void *handle) { return 0; }
  61 static inline const char *dlerror(void) { return "No dlopen support on Windows"; }
  62
  63 #ifdef _MSC_VER
  64
  65 #define ftruncate chsize
  66 #ifndef isfinite
  67 # define isfinite(x) _finite(x)
  68 #endif
  69 #ifndef isinf
  70 # define isinf(x) (!(_finite(x) || _isnan(x)))
  71 #endif
  72 #ifndef isnan
  73 # define isnan(x) _isnan(x)
  74 #endif
  75 #define popen _popen
  76 #define pclose _pclose
  77 /* The UCRT headers in the Windows SDK #error out if we #define snprintf.
  78  * The C headers that came with previous Visual Studio versions do not have
  79  * snprintf. Check for VS 2015, which appears to be the first version to
  80  * use the UCRT headers by default. */
  81 #if _MSC_VER < 1900
  82 # define snprintf _snprintf
  83 #endif
  84 #define strtoll _strtoi64
  85 #define strtoull _strtoui64
  86 #define strncasecmp _strnicmp
  87 #define strcasecmp _stricmp
  88
  89 typedef int mode_t;
  90 typedef long off_t;
  91 typedef int pid_t;
  92 typedef int ssize_t;
  93
  94 #endif /* _MSC_VER */
  95
  96 #else  /* _WIN32 */
  97
  98 #ifndef __int64
  99 #  if defined(__x86_64__) || defined(__aarch64__) || defined(_WIN64)
 100 #    define __int64 long
 101 #  else
 102 #    define __int64 long long
 103 #  endif
 104 #endif
 105
 106 #ifndef HAVE_ISFINITE
 107 int isfinite(double x);
 108 #endif
 109
 110 #ifndef HAVE_ISINF
 111 int isinf(double x);
 112 #endif
 113
 114 #ifndef HAVE_ISNAN
 115 int isnan(double x);
 116 #endif
 117
 118 /* Process creation flags */
 119 #ifndef _P_WAIT
 120 # define _P_WAIT    0
 121 # define _P_NOWAIT  1
 122 # define _P_OVERLAY 2
 123 # define _P_NOWAITO 3
 124 # define _P_DETACH  4
 125 #endif
 126 #ifndef HAVE__SPAWNVP
 127 extern int _spawnvp(int mode, const char *cmdname, const char * const argv[]);
 128 #endif
 129
 130 #endif  /* _WIN32 */
 131
 132 /****************************************************************
 133  * Macro definitions
 134  */
 135
 136 #ifdef HAVE_DLFCN_H
 137 #include <dlfcn.h>
 138 #else
 139 #define RTLD_LAZY    0x001
 140 #define RTLD_NOW     0x002
 141 #define RTLD_GLOBAL  0x100
 142 #endif
 143
 144 #ifndef S_ISLNK
 145 # define S_ISLNK(mod) (0)
 146 #endif
 147
 148 #ifndef S_ISSOCK
 149 # define S_ISSOCK(mod) (0)
 150 #endif
 151
 152 #ifndef S_ISDIR
 153 # define S_ISDIR(mod) (((mod) & _S_IFMT) == _S_IFDIR)
 154 #endif
 155
 156 #ifndef S_ISCHR
 157 # define S_ISCHR(mod) (((mod) & _S_IFMT) == _S_IFCHR)
 158 #endif
 159
 160 #ifndef S_ISFIFO
 161 # define S_ISFIFO(mod) (((mod) & _S_IFMT) == _S_IFIFO)
 162 #endif
 163
 164 #ifndef S_ISREG
 165 # define S_ISREG(mod) (((mod) & _S_IFMT) == _S_IFREG)
 166 #endif
 167
 168 /* So we open files in 64 bit access mode on Linux */
 169 #ifndef O_LARGEFILE
 170 # define O_LARGEFILE 0
 171 #endif
 172
 173 #ifndef O_NONBLOCK
 174 # define O_NONBLOCK 0
 175 #endif
 176
 177 #ifndef O_BINARY
 178 # define O_BINARY 0
 179 #endif
 180
 181
 182 /****************************************************************
 183  * Constants
 184  */
 185
 186 #ifndef M_PI
 187 #define M_PI 3.14159265358979323846
 188 #endif
 189
 190 #ifndef M_PI_2
 191 #define M_PI_2 1.570796326794896619
 192 #endif
 193
 194 #ifndef INFINITY
 195 static inline float __port_infinity(void)
 196 {
 197     static const unsigned __inf_bytes = 0x7f800000;
 198     return *(const float *)&__inf_bytes;
 199 }
 200 #define INFINITY __port_infinity()
 201 #endif
 202
 203 #ifndef NAN
 204 static inline float __port_nan(void)
 205 {
 206     static const unsigned __nan_bytes = 0x7fc00000;
 207     return *(const float *)&__nan_bytes;
 208 }
 209 #define NAN __port_nan()
 210 #endif
 211
 212
 213 /****************************************************************
 214  * Function definitions (only when using libwine_port)
 215  */
 216
 217 #ifndef NO_LIBWINE_PORT
 218
 219 #ifndef HAVE_GETOPT_LONG_ONLY
 220 extern char *optarg;
 221 extern int optind;
 222 extern int opterr;
 223 extern int optopt;
 224 struct option;
 225
 226 #ifndef HAVE_STRUCT_OPTION_NAME
 227 struct option
 228 {
 229     const char *name;
 230     int has_arg;
 231     int *flag;
 232     int val;
 233 };
 234 #endif
 235
 236 extern int getopt_long (int ___argc, char *const *___argv,
 237                         const char *__shortopts,
 238                         const struct option *__longopts, int *__longind);
 239 extern int getopt_long_only (int ___argc, char *const *___argv,
 240                              const char *__shortopts,
 241                              const struct option *__longopts, int *__longind);
 242 #endif  /* HAVE_GETOPT_LONG_ONLY */
 243
 244 #ifndef HAVE_LSTAT
 245 int lstat(const char *file_name, struct stat *buf);
 246 #endif /* HAVE_LSTAT */
 247
 248 #ifndef HAVE_POLL
 249 struct pollfd
 250 {
 251     int fd;
 252     short events;
 253     short revents;
 254 };
 255 #define POLLIN   0x01
 256 #define POLLPRI  0x02
 257 #define POLLOUT  0x04
 258 #define POLLERR  0x08
 259 #define POLLHUP  0x10
 260 #define POLLNVAL 0x20
 261 int poll( struct pollfd *fds, unsigned int count, int timeout );
 262 #endif /* HAVE_POLL */
 263
 264 #ifndef HAVE_PREAD
 265 ssize_t pread( int fd, void *buf, size_t count, off_t offset );
 266 #endif /* HAVE_PREAD */
 267
 268 #ifndef HAVE_PWRITE
 269 ssize_t pwrite( int fd, const void *buf, size_t count, off_t offset );
 270 #endif /* HAVE_PWRITE */
 271
 272 #ifndef HAVE_READLINK
 273 int readlink( const char *path, char *buf, size_t size );
 274 #endif /* HAVE_READLINK */
 275
 276 #ifndef HAVE_STRNLEN
 277 size_t strnlen( const char *str, size_t maxlen );
 278 #endif /* !defined(HAVE_STRNLEN) */
 279
 280 #ifndef HAVE_SYMLINK
 281 int symlink(const char *from, const char *to);
 282 #endif
 283
 284 #ifndef HAVE_USLEEP
 285 int usleep (unsigned int useconds);
 286 #endif /* !defined(HAVE_USLEEP) */
 287
 288 extern int mkstemps(char *template, int suffix_len);
 289
 290 #else /* NO_LIBWINE_PORT */
 291
 292 #define __WINE_NOT_PORTABLE(func) func##_is_not_portable func##_is_not_portable
 293
 294 #define getopt_long             __WINE_NOT_PORTABLE(getopt_long)
 295 #define getopt_long_only        __WINE_NOT_PORTABLE(getopt_long_only)
 296 #define lstat                   __WINE_NOT_PORTABLE(lstat)
 297 #define pread                   __WINE_NOT_PORTABLE(pread)
 298 #define pwrite                  __WINE_NOT_PORTABLE(pwrite)
 299 #define strnlen                 __WINE_NOT_PORTABLE(strnlen)
 300 #define usleep                  __WINE_NOT_PORTABLE(usleep)
 301
 302 #endif /* NO_LIBWINE_PORT */
 303
 304 #endif /* !defined(__WINE_WINE_PORT_H) */