compat/mingw.h

   1 #include <winsock2.h>
   2 #include <ws2tcpip.h>
   3
   4 /*
   5  * things that are not available in header files
   6  */
   7
   8 typedef int pid_t;
   9 typedef int uid_t;
  10 typedef int socklen_t;
  11 #define hstrerror strerror
  12
  13 #define S_IFLNK    0120000 /* Symbolic link */
  14 #define S_ISLNK(x) (((x) & S_IFMT) == S_IFLNK)
  15 #define S_ISSOCK(x) 0
  16
  17 #define S_IRGRP 0
  18 #define S_IWGRP 0
  19 #define S_IXGRP 0
  20 #define S_IRWXG (S_IRGRP | S_IWGRP | S_IXGRP)
  21 #define S_IROTH 0
  22 #define S_IWOTH 0
  23 #define S_IXOTH 0
  24 #define S_IRWXO (S_IROTH | S_IWOTH | S_IXOTH)
  25
  26 #define S_ISUID 0004000
  27 #define S_ISGID 0002000
  28 #define S_ISVTX 0001000
  29
  30 #define WIFEXITED(x) 1
  31 #define WIFSIGNALED(x) 0
  32 #define WEXITSTATUS(x) ((x) & 0xff)
  33 #define WTERMSIG(x) SIGTERM
  34
  35 #ifndef EWOULDBLOCK
  36 #define EWOULDBLOCK EAGAIN
  37 #endif
  38 #define SHUT_WR SD_SEND
  39
  40 #define SIGHUP 1
  41 #define SIGQUIT 3
  42 #define SIGKILL 9
  43 #define SIGPIPE 13
  44 #define SIGALRM 14
  45 #define SIGCHLD 17
  46
  47 #define F_GETFD 1
  48 #define F_SETFD 2
  49 #define FD_CLOEXEC 0x1
  50
  51 #ifndef EAFNOSUPPORT
  52 #define EAFNOSUPPORT WSAEAFNOSUPPORT
  53 #endif
  54 #ifndef ECONNABORTED
  55 #define ECONNABORTED WSAECONNABORTED
  56 #endif
  57
  58 struct passwd {
  59         char *pw_name;
  60         char *pw_gecos;
  61         char *pw_dir;
  62 };
  63
  64 typedef void (__cdecl *sig_handler_t)(int);
  65 struct sigaction {
  66         sig_handler_t sa_handler;
  67         unsigned sa_flags;
  68 };
  69 #define sigemptyset(x) (void)0
  70 #define SA_RESTART 0
  71
  72 struct itimerval {
  73         struct timeval it_value, it_interval;
  74 };
  75 #define ITIMER_REAL 0
  76
  77 /*
  78  * sanitize preprocessor namespace polluted by Windows headers defining
  79  * macros which collide with git local versions
  80  */
  81 #undef HELP_COMMAND /* from winuser.h */
  82
  83 /*
  84  * trivial stubs
  85  */
  86
  87 static inline int readlink(const char *path, char *buf, size_t bufsiz)
  88 { errno = ENOSYS; return -1; }
  89 static inline int symlink(const char *oldpath, const char *newpath)
  90 { errno = ENOSYS; return -1; }
  91 static inline int fchmod(int fildes, mode_t mode)
  92 { errno = ENOSYS; return -1; }
  93 static inline pid_t fork(void)
  94 { errno = ENOSYS; return -1; }
  95 static inline unsigned int alarm(unsigned int seconds)
  96 { return 0; }
  97 static inline int fsync(int fd)
  98 { return _commit(fd); }
  99 static inline pid_t getppid(void)
 100 { return 1; }
 101 static inline void sync(void)
 102 {}
 103 static inline uid_t getuid(void)
 104 { return 1; }
 105 static inline struct passwd *getpwnam(const char *name)
 106 { return NULL; }
 107 static inline int fcntl(int fd, int cmd, ...)
 108 {
 109         if (cmd == F_GETFD || cmd == F_SETFD)
 110                 return 0;
 111         errno = EINVAL;
 112         return -1;
 113 }
 114 /* bash cannot reliably detect negative return codes as failure */
 115 #define exit(code) exit((code) & 0xff)
 116
 117 /*
 118  * simple adaptors
 119  */
 120
 121 static inline int mingw_mkdir(const char *path, int mode)
 122 {
 123         return mkdir(path);
 124 }
 125 #define mkdir mingw_mkdir
 126
 127 #define WNOHANG 1
 128 pid_t waitpid(pid_t pid, int *status, int options);
 129
 130 #define kill mingw_kill
 131 int mingw_kill(pid_t pid, int sig);
 132
 133 #ifndef NO_OPENSSL
 134 #include <openssl/ssl.h>
 135 static inline int mingw_SSL_set_fd(SSL *ssl, int fd)
 136 {
 137         return SSL_set_fd(ssl, _get_osfhandle(fd));
 138 }
 139 #define SSL_set_fd mingw_SSL_set_fd
 140
 141 static inline int mingw_SSL_set_rfd(SSL *ssl, int fd)
 142 {
 143         return SSL_set_rfd(ssl, _get_osfhandle(fd));
 144 }
 145 #define SSL_set_rfd mingw_SSL_set_rfd
 146
 147 static inline int mingw_SSL_set_wfd(SSL *ssl, int fd)
 148 {
 149         return SSL_set_wfd(ssl, _get_osfhandle(fd));
 150 }
 151 #define SSL_set_wfd mingw_SSL_set_wfd
 152 #endif
 153
 154 /*
 155  * implementations of missing functions
 156  */
 157
 158 int pipe(int filedes[2]);
 159 unsigned int sleep (unsigned int seconds);
 160 int mkstemp(char *template);
 161 int gettimeofday(struct timeval *tv, void *tz);
 162 struct tm *gmtime_r(const time_t *timep, struct tm *result);
 163 struct tm *localtime_r(const time_t *timep, struct tm *result);
 164 int getpagesize(void);  /* defined in MinGW's libgcc.a */
 165 struct passwd *getpwuid(uid_t uid);
 166 int setitimer(int type, struct itimerval *in, struct itimerval *out);
 167 int sigaction(int sig, struct sigaction *in, struct sigaction *out);
 168 int link(const char *oldpath, const char *newpath);
 169
 170 /*
 171  * replacements of existing functions
 172  */
 173
 174 int mingw_unlink(const char *pathname);
 175 #define unlink mingw_unlink
 176
 177 int mingw_rmdir(const char *path);
 178 #define rmdir mingw_rmdir
 179
 180 int mingw_open (const char *filename, int oflags, ...);
 181 #define open mingw_open
 182
 183 int mingw_fgetc(FILE *stream);
 184 #define fgetc mingw_fgetc
 185
 186 FILE *mingw_fopen (const char *filename, const char *otype);
 187 #define fopen mingw_fopen
 188
 189 FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream);
 190 #define freopen mingw_freopen
 191
 192 int mingw_fflush(FILE *stream);
 193 #define fflush mingw_fflush
 194
 195 char *mingw_getcwd(char *pointer, int len);
 196 #define getcwd mingw_getcwd
 197
 198 char *mingw_getenv(const char *name);
 199 #define getenv mingw_getenv
 200
 201 int mingw_gethostname(char *host, int namelen);
 202 #define gethostname mingw_gethostname
 203
 204 struct hostent *mingw_gethostbyname(const char *host);
 205 #define gethostbyname mingw_gethostbyname
 206
 207 void mingw_freeaddrinfo(struct addrinfo *res);
 208 #define freeaddrinfo mingw_freeaddrinfo
 209
 210 int mingw_getaddrinfo(const char *node, const char *service,
 211                       const struct addrinfo *hints, struct addrinfo **res);
 212 #define getaddrinfo mingw_getaddrinfo
 213
 214 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
 215                       char *host, DWORD hostlen, char *serv, DWORD servlen,
 216                       int flags);
 217 #define getnameinfo mingw_getnameinfo
 218
 219 int mingw_socket(int domain, int type, int protocol);
 220 #define socket mingw_socket
 221
 222 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 223 #define connect mingw_connect
 224
 225 int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz);
 226 #define bind mingw_bind
 227
 228 int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen);
 229 #define setsockopt mingw_setsockopt
 230
 231 int mingw_shutdown(int sockfd, int how);
 232 #define shutdown mingw_shutdown
 233
 234 int mingw_listen(int sockfd, int backlog);
 235 #define listen mingw_listen
 236
 237 int mingw_accept(int sockfd, struct sockaddr *sa, socklen_t *sz);
 238 #define accept mingw_accept
 239
 240 int mingw_rename(const char*, const char*);
 241 #define rename mingw_rename
 242
 243 #if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
 244 int mingw_getpagesize(void);
 245 #define getpagesize mingw_getpagesize
 246 #endif
 247
 248 struct rlimit {
 249         unsigned int rlim_cur;
 250 };
 251 #define RLIMIT_NOFILE 0
 252
 253 static inline int getrlimit(int resource, struct rlimit *rlp)
 254 {
 255         if (resource != RLIMIT_NOFILE) {
 256                 errno = EINVAL;
 257                 return -1;
 258         }
 259
 260         rlp->rlim_cur = 2048;
 261         return 0;
 262 }
 263
 264 /*
 265  * Use mingw specific stat()/lstat()/fstat() implementations on Windows.
 266  */
 267 #define off_t off64_t
 268 #define lseek _lseeki64
 269
 270 /* use struct stat with 64 bit st_size */
 271 #ifdef stat
 272 #undef stat
 273 #endif
 274 #define stat _stati64
 275 int mingw_lstat(const char *file_name, struct stat *buf);
 276 int mingw_stat(const char *file_name, struct stat *buf);
 277 int mingw_fstat(int fd, struct stat *buf);
 278 #ifdef fstat
 279 #undef fstat
 280 #endif
 281 #define fstat mingw_fstat
 282 #ifdef lstat
 283 #undef lstat
 284 #endif
 285 #define lstat mingw_lstat
 286
 287 #ifndef _stati64
 288 # define _stati64(x,y) mingw_stat(x,y)
 289 #elif defined (_USE_32BIT_TIME_T)
 290 # define _stat32i64(x,y) mingw_stat(x,y)
 291 #else
 292 # define _stat64(x,y) mingw_stat(x,y)
 293 #endif
 294
 295 int mingw_utime(const char *file_name, const struct utimbuf *times);
 296 #define utime mingw_utime
 297
 298 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
 299                      const char *dir,
 300                      int fhin, int fhout, int fherr);
 301 int mingw_execvp(const char *cmd, char *const *argv);
 302 #define execvp mingw_execvp
 303 int mingw_execv(const char *cmd, char *const *argv);
 304 #define execv mingw_execv
 305
 306 static inline unsigned int git_ntohl(unsigned int x)
 307 { return (unsigned int)ntohl(x); }
 308 #define ntohl git_ntohl
 309
 310 sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 311 #define signal mingw_signal
 312
 313 int mingw_raise(int sig);
 314 #define raise mingw_raise
 315
 316 /*
 317  * ANSI emulation wrappers
 318  */
 319
 320 int winansi_fputs(const char *str, FILE *stream);
 321 int winansi_printf(const char *format, ...) __attribute__((format (printf, 1, 2)));
 322 int winansi_fprintf(FILE *stream, const char *format, ...) __attribute__((format (printf, 2, 3)));
 323 #define fputs winansi_fputs
 324 #define printf(...) winansi_printf(__VA_ARGS__)
 325 #define fprintf(...) winansi_fprintf(__VA_ARGS__)
 326
 327 /*
 328  * git specific compatibility
 329  */
 330
 331 #define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
 332 #define is_dir_sep(c) ((c) == '/' || (c) == '\\')
 333 static inline char *mingw_find_last_dir_sep(const char *path)
 334 {
 335         char *ret = NULL;
 336         for (; *path; ++path)
 337                 if (is_dir_sep(*path))
 338                         ret = (char *)path;
 339         return ret;
 340 }
 341 #define find_last_dir_sep mingw_find_last_dir_sep
 342 #define PATH_SEP ';'
 343 #define PRIuMAX "I64u"
 344 #define PRId64 "I64d"
 345
 346 void mingw_open_html(const char *path);
 347 #define open_html mingw_open_html
 348
 349 /*
 350  * helpers
 351  */
 352
 353 char **make_augmented_environ(const char *const *vars);
 354 void free_environ(char **env);
 355
 356 /*
 357  * A critical section used in the implementation of the spawn
 358  * functions (mingw_spawnv[p]e()) and waitpid(). Intialised in
 359  * the replacement main() macro below.
 360  */
 361 extern CRITICAL_SECTION pinfo_cs;
 362
 363 /*
 364  * A replacement of main() that ensures that argv[0] has a path
 365  * and that default fmode and std(in|out|err) are in binary mode
 366  */
 367
 368 #define main(c,v) dummy_decl_mingw_main(); \
 369 static int mingw_main(c,v); \
 370 int main(int argc, char **argv) \
 371 { \
 372         extern CRITICAL_SECTION pinfo_cs; \
 373         _fmode = _O_BINARY; \
 374         _setmode(_fileno(stdin), _O_BINARY); \
 375         _setmode(_fileno(stdout), _O_BINARY); \
 376         _setmode(_fileno(stderr), _O_BINARY); \
 377         argv[0] = xstrdup(_pgmptr); \
 378         InitializeCriticalSection(&pinfo_cs); \
 379         return mingw_main(argc, argv); \
 380 } \
 381 static int mingw_main(c,v)
 382
 383 /*
 384  * Used by Pthread API implementation for Windows
 385  */
 386 extern int err_win_to_posix(DWORD winerr);