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