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 #define EWOULDBLOCK EAGAIN
  36 #define SHUT_WR SD_SEND
  37
  38 #define SIGHUP 1
  39 #define SIGQUIT 3
  40 #define SIGKILL 9
  41 #define SIGPIPE 13
  42 #define SIGALRM 14
  43 #define SIGCHLD 17
  44
  45 #define F_GETFD 1
  46 #define F_SETFD 2
  47 #define FD_CLOEXEC 0x1
  48
  49 #define EAFNOSUPPORT WSAEAFNOSUPPORT
  50 #define ECONNABORTED WSAECONNABORTED
  51
  52 struct passwd {
  53         char *pw_name;
  54         char *pw_gecos;
  55         char *pw_dir;
  56 };
  57
  58 typedef void (__cdecl *sig_handler_t)(int);
  59 struct sigaction {
  60         sig_handler_t sa_handler;
  61         unsigned sa_flags;
  62 };
  63 #define sigemptyset(x) (void)0
  64 #define SA_RESTART 0
  65
  66 struct itimerval {
  67         struct timeval it_value, it_interval;
  68 };
  69 #define ITIMER_REAL 0
  70
  71 /*
  72  * sanitize preprocessor namespace polluted by Windows headers defining
  73  * macros which collide with git local versions
  74  */
  75 #undef HELP_COMMAND /* from winuser.h */
  76
  77 /*
  78  * trivial stubs
  79  */
  80
  81 static inline int readlink(const char *path, char *buf, size_t bufsiz)
  82 { errno = ENOSYS; return -1; }
  83 static inline int symlink(const char *oldpath, const char *newpath)
  84 { errno = ENOSYS; return -1; }
  85 static inline int fchmod(int fildes, mode_t mode)
  86 { errno = ENOSYS; return -1; }
  87 static inline pid_t fork(void)
  88 { errno = ENOSYS; return -1; }
  89 static inline unsigned int alarm(unsigned int seconds)
  90 { return 0; }
  91 static inline int fsync(int fd)
  92 { return _commit(fd); }
  93 static inline pid_t getppid(void)
  94 { return 1; }
  95 static inline void sync(void)
  96 {}
  97 static inline uid_t getuid(void)
  98 { return 1; }
  99 static inline struct passwd *getpwnam(const char *name)
 100 { return NULL; }
 101 static inline int fcntl(int fd, int cmd, ...)
 102 {
 103         if (cmd == F_GETFD || cmd == F_SETFD)
 104                 return 0;
 105         errno = EINVAL;
 106         return -1;
 107 }
 108 /* bash cannot reliably detect negative return codes as failure */
 109 #define exit(code) exit((code) & 0xff)
 110
 111 /*
 112  * simple adaptors
 113  */
 114
 115 int mingw_mkdir(const char *path, int mode);
 116 #define mkdir mingw_mkdir
 117
 118 #define WNOHANG 1
 119 pid_t waitpid(pid_t pid, int *status, int options);
 120
 121 #define kill mingw_kill
 122 int mingw_kill(pid_t pid, int sig);
 123
 124 #ifndef NO_OPENSSL
 125 #include <openssl/ssl.h>
 126 static inline int mingw_SSL_set_fd(SSL *ssl, int fd)
 127 {
 128         return SSL_set_fd(ssl, _get_osfhandle(fd));
 129 }
 130 #define SSL_set_fd mingw_SSL_set_fd
 131
 132 static inline int mingw_SSL_set_rfd(SSL *ssl, int fd)
 133 {
 134         return SSL_set_rfd(ssl, _get_osfhandle(fd));
 135 }
 136 #define SSL_set_rfd mingw_SSL_set_rfd
 137
 138 static inline int mingw_SSL_set_wfd(SSL *ssl, int fd)
 139 {
 140         return SSL_set_wfd(ssl, _get_osfhandle(fd));
 141 }
 142 #define SSL_set_wfd mingw_SSL_set_wfd
 143 #endif
 144
 145 /*
 146  * implementations of missing functions
 147  */
 148
 149 int pipe(int filedes[2]);
 150 unsigned int sleep (unsigned int seconds);
 151 int mkstemp(char *template);
 152 int gettimeofday(struct timeval *tv, void *tz);
 153 struct tm *gmtime_r(const time_t *timep, struct tm *result);
 154 struct tm *localtime_r(const time_t *timep, struct tm *result);
 155 int getpagesize(void);  /* defined in MinGW's libgcc.a */
 156 struct passwd *getpwuid(uid_t uid);
 157 int setitimer(int type, struct itimerval *in, struct itimerval *out);
 158 int sigaction(int sig, struct sigaction *in, struct sigaction *out);
 159 int link(const char *oldpath, const char *newpath);
 160
 161 /*
 162  * replacements of existing functions
 163  */
 164
 165 int mingw_unlink(const char *pathname);
 166 #define unlink mingw_unlink
 167
 168 int mingw_rmdir(const char *path);
 169 #define rmdir mingw_rmdir
 170
 171 int mingw_open (const char *filename, int oflags, ...);
 172 #define open mingw_open
 173
 174 ssize_t mingw_write(int fd, const void *buf, size_t count);
 175 #define write mingw_write
 176
 177 int mingw_fgetc(FILE *stream);
 178 #define fgetc mingw_fgetc
 179
 180 FILE *mingw_fopen (const char *filename, const char *otype);
 181 #define fopen mingw_fopen
 182
 183 FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream);
 184 #define freopen mingw_freopen
 185
 186 int mingw_fflush(FILE *stream);
 187 #define fflush mingw_fflush
 188
 189 char *mingw_getcwd(char *pointer, int len);
 190 #define getcwd mingw_getcwd
 191
 192 char *mingw_getenv(const char *name);
 193 #define getenv mingw_getenv
 194
 195 int mingw_gethostname(char *host, int namelen);
 196 #define gethostname mingw_gethostname
 197
 198 struct hostent *mingw_gethostbyname(const char *host);
 199 #define gethostbyname mingw_gethostbyname
 200
 201 void mingw_freeaddrinfo(struct addrinfo *res);
 202 #define freeaddrinfo mingw_freeaddrinfo
 203
 204 int mingw_getaddrinfo(const char *node, const char *service,
 205                       const struct addrinfo *hints, struct addrinfo **res);
 206 #define getaddrinfo mingw_getaddrinfo
 207
 208 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
 209                       char *host, DWORD hostlen, char *serv, DWORD servlen,
 210                       int flags);
 211 #define getnameinfo mingw_getnameinfo
 212
 213 int mingw_socket(int domain, int type, int protocol);
 214 #define socket mingw_socket
 215
 216 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 217 #define connect mingw_connect
 218
 219 int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz);
 220 #define bind mingw_bind
 221
 222 int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen);
 223 #define setsockopt mingw_setsockopt
 224
 225 int mingw_shutdown(int sockfd, int how);
 226 #define shutdown mingw_shutdown
 227
 228 int mingw_listen(int sockfd, int backlog);
 229 #define listen mingw_listen
 230
 231 int mingw_accept(int sockfd, struct sockaddr *sa, socklen_t *sz);
 232 #define accept mingw_accept
 233
 234 int mingw_rename(const char*, const char*);
 235 #define rename mingw_rename
 236
 237 #if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
 238 int mingw_getpagesize(void);
 239 #define getpagesize mingw_getpagesize
 240 #endif
 241
 242 struct rlimit {
 243         unsigned int rlim_cur;
 244 };
 245 #define RLIMIT_NOFILE 0
 246
 247 static inline int getrlimit(int resource, struct rlimit *rlp)
 248 {
 249         if (resource != RLIMIT_NOFILE) {
 250                 errno = EINVAL;
 251                 return -1;
 252         }
 253
 254         rlp->rlim_cur = 2048;
 255         return 0;
 256 }
 257
 258 /* Use mingw_lstat() instead of lstat()/stat() and
 259  * mingw_fstat() instead of fstat() on Windows.
 260  */
 261 #define off_t off64_t
 262 #define lseek _lseeki64
 263 #ifndef ALREADY_DECLARED_STAT_FUNCS
 264 #define stat _stati64
 265 int mingw_lstat(const char *file_name, struct stat *buf);
 266 int mingw_stat(const char *file_name, struct stat *buf);
 267 int mingw_fstat(int fd, struct stat *buf);
 268 #define fstat mingw_fstat
 269 #define lstat mingw_lstat
 270 #define _stati64(x,y) mingw_stat(x,y)
 271 #endif
 272
 273 int mingw_utime(const char *file_name, const struct utimbuf *times);
 274 #define utime mingw_utime
 275
 276 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
 277                      const char *dir,
 278                      int fhin, int fhout, int fherr);
 279 int mingw_execvp(const char *cmd, char *const *argv);
 280 #define execvp mingw_execvp
 281 int mingw_execv(const char *cmd, char *const *argv);
 282 #define execv mingw_execv
 283
 284 static inline unsigned int git_ntohl(unsigned int x)
 285 { return (unsigned int)ntohl(x); }
 286 #define ntohl git_ntohl
 287
 288 sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 289 #define signal mingw_signal
 290
 291 int mingw_raise(int sig);
 292 #define raise mingw_raise
 293
 294 /*
 295  * ANSI emulation wrappers
 296  */
 297
 298 int winansi_fputs(const char *str, FILE *stream);
 299 int winansi_printf(const char *format, ...) __attribute__((format (printf, 1, 2)));
 300 int winansi_fprintf(FILE *stream, const char *format, ...) __attribute__((format (printf, 2, 3)));
 301 #define fputs winansi_fputs
 302 #define printf(...) winansi_printf(__VA_ARGS__)
 303 #define fprintf(...) winansi_fprintf(__VA_ARGS__)
 304
 305 /*
 306  * git specific compatibility
 307  */
 308
 309 #define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
 310 #define is_dir_sep(c) ((c) == '/' || (c) == '\\')
 311 static inline char *mingw_find_last_dir_sep(const char *path)
 312 {
 313         char *ret = NULL;
 314         for (; *path; ++path)
 315                 if (is_dir_sep(*path))
 316                         ret = (char *)path;
 317         return ret;
 318 }
 319 #define find_last_dir_sep mingw_find_last_dir_sep
 320 int mingw_offset_1st_component(const char *path);
 321 #define offset_1st_component mingw_offset_1st_component
 322 #define PATH_SEP ';'
 323 #define PRIuMAX "I64u"
 324
 325 void mingw_open_html(const char *path);
 326 #define open_html mingw_open_html
 327
 328 void mingw_mark_as_git_dir(const char *dir);
 329 #define mark_as_git_dir mingw_mark_as_git_dir
 330
 331 /*
 332  * helpers
 333  */
 334
 335 char **make_augmented_environ(const char *const *vars);
 336 void free_environ(char **env);
 337
 338 /*
 339  * A replacement of main() that ensures that argv[0] has a path
 340  * and that default fmode and std(in|out|err) are in binary mode
 341  */
 342
 343 #define main(c,v) dummy_decl_mingw_main(); \
 344 static int mingw_main(); \
 345 int main(int argc, const char **argv) \
 346 { \
 347         extern CRITICAL_SECTION pinfo_cs; \
 348         _fmode = _O_BINARY; \
 349         _setmode(_fileno(stdin), _O_BINARY); \
 350         _setmode(_fileno(stdout), _O_BINARY); \
 351         _setmode(_fileno(stderr), _O_BINARY); \
 352         argv[0] = xstrdup(_pgmptr); \
 353         InitializeCriticalSection(&pinfo_cs); \
 354         return mingw_main(argc, argv); \
 355 } \
 356 static int mingw_main(c,v)
 357
 358 /*
 359  * Used by Pthread API implementation for Windows
 360  */
 361 extern int err_win_to_posix(DWORD winerr);
 362
 363 extern const char *get_windows_home_directory();
 364 #define get_home_directory() get_windows_home_directory()