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 static inline int mingw_mkdir(const char *path, int mode)
 116 {
 117         return mkdir(path);
 118 }
 119 #define mkdir mingw_mkdir
 120
 121 #define WNOHANG 1
 122 pid_t waitpid(pid_t pid, int *status, int options);
 123
 124 #define kill mingw_kill
 125 int mingw_kill(pid_t pid, int sig);
 126
 127 #ifndef NO_OPENSSL
 128 #include <openssl/ssl.h>
 129 static inline int mingw_SSL_set_fd(SSL *ssl, int fd)
 130 {
 131         return SSL_set_fd(ssl, _get_osfhandle(fd));
 132 }
 133 #define SSL_set_fd mingw_SSL_set_fd
 134
 135 static inline int mingw_SSL_set_rfd(SSL *ssl, int fd)
 136 {
 137         return SSL_set_rfd(ssl, _get_osfhandle(fd));
 138 }
 139 #define SSL_set_rfd mingw_SSL_set_rfd
 140
 141 static inline int mingw_SSL_set_wfd(SSL *ssl, int fd)
 142 {
 143         return SSL_set_wfd(ssl, _get_osfhandle(fd));
 144 }
 145 #define SSL_set_wfd mingw_SSL_set_wfd
 146 #endif
 147
 148 /*
 149  * implementations of missing functions
 150  */
 151
 152 int pipe(int filedes[2]);
 153 unsigned int sleep (unsigned int seconds);
 154 int mkstemp(char *template);
 155 int gettimeofday(struct timeval *tv, void *tz);
 156 struct tm *gmtime_r(const time_t *timep, struct tm *result);
 157 struct tm *localtime_r(const time_t *timep, struct tm *result);
 158 int getpagesize(void);  /* defined in MinGW's libgcc.a */
 159 struct passwd *getpwuid(uid_t uid);
 160 int setitimer(int type, struct itimerval *in, struct itimerval *out);
 161 int sigaction(int sig, struct sigaction *in, struct sigaction *out);
 162 int link(const char *oldpath, const char *newpath);
 163
 164 /*
 165  * replacements of existing functions
 166  */
 167
 168 int mingw_unlink(const char *pathname);
 169 #define unlink mingw_unlink
 170
 171 int mingw_rmdir(const char *path);
 172 #define rmdir mingw_rmdir
 173
 174 int mingw_open (const char *filename, int oflags, ...);
 175 #define open mingw_open
 176
 177 ssize_t mingw_write(int fd, const void *buf, size_t count);
 178 #define write mingw_write
 179
 180 int mingw_fgetc(FILE *stream);
 181 #define fgetc mingw_fgetc
 182
 183 FILE *mingw_fopen (const char *filename, const char *otype);
 184 #define fopen mingw_fopen
 185
 186 FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream);
 187 #define freopen mingw_freopen
 188
 189 int mingw_fflush(FILE *stream);
 190 #define fflush mingw_fflush
 191
 192 char *mingw_getcwd(char *pointer, int len);
 193 #define getcwd mingw_getcwd
 194
 195 char *mingw_getenv(const char *name);
 196 #define getenv mingw_getenv
 197
 198 int mingw_gethostname(char *host, int namelen);
 199 #define gethostname mingw_gethostname
 200
 201 struct hostent *mingw_gethostbyname(const char *host);
 202 #define gethostbyname mingw_gethostbyname
 203
 204 void mingw_freeaddrinfo(struct addrinfo *res);
 205 #define freeaddrinfo mingw_freeaddrinfo
 206
 207 int mingw_getaddrinfo(const char *node, const char *service,
 208                       const struct addrinfo *hints, struct addrinfo **res);
 209 #define getaddrinfo mingw_getaddrinfo
 210
 211 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
 212                       char *host, DWORD hostlen, char *serv, DWORD servlen,
 213                       int flags);
 214 #define getnameinfo mingw_getnameinfo
 215
 216 int mingw_socket(int domain, int type, int protocol);
 217 #define socket mingw_socket
 218
 219 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 220 #define connect mingw_connect
 221
 222 int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz);
 223 #define bind mingw_bind
 224
 225 int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen);
 226 #define setsockopt mingw_setsockopt
 227
 228 int mingw_shutdown(int sockfd, int how);
 229 #define shutdown mingw_shutdown
 230
 231 int mingw_listen(int sockfd, int backlog);
 232 #define listen mingw_listen
 233
 234 int mingw_accept(int sockfd, struct sockaddr *sa, socklen_t *sz);
 235 #define accept mingw_accept
 236
 237 int mingw_rename(const char*, const char*);
 238 #define rename mingw_rename
 239
 240 #if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
 241 int mingw_getpagesize(void);
 242 #define getpagesize mingw_getpagesize
 243 #endif
 244
 245 struct rlimit {
 246         unsigned int rlim_cur;
 247 };
 248 #define RLIMIT_NOFILE 0
 249
 250 static inline int getrlimit(int resource, struct rlimit *rlp)
 251 {
 252         if (resource != RLIMIT_NOFILE) {
 253                 errno = EINVAL;
 254                 return -1;
 255         }
 256
 257         rlp->rlim_cur = 2048;
 258         return 0;
 259 }
 260
 261 /* Use mingw_lstat() instead of lstat()/stat() and
 262  * mingw_fstat() instead of fstat() on Windows.
 263  */
 264 #define off_t off64_t
 265 #define lseek _lseeki64
 266 #ifndef ALREADY_DECLARED_STAT_FUNCS
 267 #define stat _stati64
 268 int mingw_lstat(const char *file_name, struct stat *buf);
 269 int mingw_stat(const char *file_name, struct stat *buf);
 270 int mingw_fstat(int fd, struct stat *buf);
 271 #define fstat mingw_fstat
 272 #define lstat mingw_lstat
 273 #define _stati64(x,y) mingw_stat(x,y)
 274 #endif
 275
 276 int mingw_utime(const char *file_name, const struct utimbuf *times);
 277 #define utime mingw_utime
 278
 279 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
 280                      const char *dir,
 281                      int fhin, int fhout, int fherr);
 282 int mingw_execvp(const char *cmd, char *const *argv);
 283 #define execvp mingw_execvp
 284 int mingw_execv(const char *cmd, char *const *argv);
 285 #define execv mingw_execv
 286
 287 static inline unsigned int git_ntohl(unsigned int x)
 288 { return (unsigned int)ntohl(x); }
 289 #define ntohl git_ntohl
 290
 291 sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 292 #define signal mingw_signal
 293
 294 int mingw_raise(int sig);
 295 #define raise mingw_raise
 296
 297 /*
 298  * ANSI emulation wrappers
 299  */
 300
 301 int winansi_fputs(const char *str, FILE *stream);
 302 int winansi_printf(const char *format, ...) __attribute__((format (printf, 1, 2)));
 303 int winansi_fprintf(FILE *stream, const char *format, ...) __attribute__((format (printf, 2, 3)));
 304 #define fputs winansi_fputs
 305 #define printf(...) winansi_printf(__VA_ARGS__)
 306 #define fprintf(...) winansi_fprintf(__VA_ARGS__)
 307
 308 /*
 309  * git specific compatibility
 310  */
 311
 312 #define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
 313 #define is_dir_sep(c) ((c) == '/' || (c) == '\\')
 314 static inline char *mingw_find_last_dir_sep(const char *path)
 315 {
 316         char *ret = NULL;
 317         for (; *path; ++path)
 318                 if (is_dir_sep(*path))
 319                         ret = (char *)path;
 320         return ret;
 321 }
 322 #define find_last_dir_sep mingw_find_last_dir_sep
 323 #define PATH_SEP ';'
 324 #define PRIuMAX "I64u"
 325 #define PRId64 "I64d"
 326
 327 void mingw_open_html(const char *path);
 328 #define open_html mingw_open_html
 329
 330 /*
 331  * helpers
 332  */
 333
 334 char **make_augmented_environ(const char *const *vars);
 335 void free_environ(char **env);
 336
 337 /*
 338  * A critical section used in the implementation of the spawn
 339  * functions (mingw_spawnv[p]e()) and waitpid(). Intialised in
 340  * the replacement main() macro below.
 341  */
 342 extern CRITICAL_SECTION pinfo_cs;
 343
 344 /*
 345  * A replacement of main() that ensures that argv[0] has a path
 346  * and that default fmode and std(in|out|err) are in binary mode
 347  */
 348
 349 #define main(c,v) dummy_decl_mingw_main(); \
 350 static int mingw_main(c,v); \
 351 int main(int argc, char **argv) \
 352 { \
 353         extern CRITICAL_SECTION pinfo_cs; \
 354         _fmode = _O_BINARY; \
 355         _setmode(_fileno(stdin), _O_BINARY); \
 356         _setmode(_fileno(stdout), _O_BINARY); \
 357         _setmode(_fileno(stderr), _O_BINARY); \
 358         argv[0] = xstrdup(_pgmptr); \
 359         InitializeCriticalSection(&pinfo_cs); \
 360         return mingw_main(argc, argv); \
 361 } \
 362 static int mingw_main(c,v)
 363
 364 /*
 365  * Used by Pthread API implementation for Windows
 366  */
 367 extern int err_win_to_posix(DWORD winerr);