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 #ifndef _STAT_H_
  18 #define S_IRUSR 0
  19 #define S_IWUSR 0
  20 #define S_IXUSR 0
  21 #define S_IRWXU (S_IRUSR | S_IWUSR | S_IXUSR)
  22 #endif
  23 #define S_IRGRP 0
  24 #define S_IWGRP 0
  25 #define S_IXGRP 0
  26 #define S_IRWXG (S_IRGRP | S_IWGRP | S_IXGRP)
  27 #define S_IROTH 0
  28 #define S_IWOTH 0
  29 #define S_IXOTH 0
  30 #define S_IRWXO (S_IROTH | S_IWOTH | S_IXOTH)
  31 #define S_ISUID 0
  32 #define S_ISGID 0
  33 #define S_ISVTX 0
  34
  35 #define WIFEXITED(x) 1
  36 #define WIFSIGNALED(x) 0
  37 #define WEXITSTATUS(x) ((x) & 0xff)
  38 #define WTERMSIG(x) SIGTERM
  39
  40 #define EWOULDBLOCK EAGAIN
  41 #define SHUT_WR SD_SEND
  42
  43 #define SIGHUP 1
  44 #define SIGQUIT 3
  45 #define SIGKILL 9
  46 #define SIGPIPE 13
  47 #define SIGALRM 14
  48 #define SIGCHLD 17
  49
  50 #define F_GETFD 1
  51 #define F_SETFD 2
  52 #define FD_CLOEXEC 0x1
  53
  54 #define EAFNOSUPPORT WSAEAFNOSUPPORT
  55 #define ECONNABORTED WSAECONNABORTED
  56
  57 struct passwd {
  58         char *pw_name;
  59         char *pw_gecos;
  60         char *pw_dir;
  61 };
  62
  63 extern char *getpass(const char *prompt);
  64
  65 typedef void (__cdecl *sig_handler_t)(int);
  66 struct sigaction {
  67         sig_handler_t sa_handler;
  68         unsigned sa_flags;
  69 };
  70 #define sigemptyset(x) (void)0
  71 #define SA_RESTART 0
  72
  73 struct itimerval {
  74         struct timeval it_value, it_interval;
  75 };
  76 #define ITIMER_REAL 0
  77
  78 /*
  79  * sanitize preprocessor namespace polluted by Windows headers defining
  80  * macros which collide with git local versions
  81  */
  82 #undef HELP_COMMAND /* from winuser.h */
  83
  84 /*
  85  * trivial stubs
  86  */
  87
  88 static inline int readlink(const char *path, char *buf, size_t bufsiz)
  89 { errno = ENOSYS; return -1; }
  90 static inline int symlink(const char *oldpath, const char *newpath)
  91 { errno = ENOSYS; return -1; }
  92 static inline int fchmod(int fildes, mode_t mode)
  93 { errno = ENOSYS; return -1; }
  94 static inline pid_t fork(void)
  95 { errno = ENOSYS; return -1; }
  96 static inline unsigned int alarm(unsigned int seconds)
  97 { return 0; }
  98 static inline int fsync(int fd)
  99 { return _commit(fd); }
 100 static inline pid_t getppid(void)
 101 { return 1; }
 102 static inline void sync(void)
 103 {}
 104 static inline uid_t getuid(void)
 105 { return 1; }
 106 static inline struct passwd *getpwnam(const char *name)
 107 { return NULL; }
 108 static inline int fcntl(int fd, int cmd, ...)
 109 {
 110         if (cmd == F_GETFD || cmd == F_SETFD)
 111                 return 0;
 112         errno = EINVAL;
 113         return -1;
 114 }
 115 /* bash cannot reliably detect negative return codes as failure */
 116 #define exit(code) exit((code) & 0xff)
 117
 118 /*
 119  * simple adaptors
 120  */
 121
 122 int mingw_mkdir(const char *path, int mode);
 123 #define mkdir mingw_mkdir
 124
 125 #define WNOHANG 1
 126 pid_t waitpid(pid_t pid, int *status, int options);
 127
 128 #define kill mingw_kill
 129 int mingw_kill(pid_t pid, int sig);
 130
 131 #ifndef NO_OPENSSL
 132 #include <openssl/ssl.h>
 133 static inline int mingw_SSL_set_fd(SSL *ssl, int fd)
 134 {
 135         return SSL_set_fd(ssl, _get_osfhandle(fd));
 136 }
 137 #define SSL_set_fd mingw_SSL_set_fd
 138
 139 static inline int mingw_SSL_set_rfd(SSL *ssl, int fd)
 140 {
 141         return SSL_set_rfd(ssl, _get_osfhandle(fd));
 142 }
 143 #define SSL_set_rfd mingw_SSL_set_rfd
 144
 145 static inline int mingw_SSL_set_wfd(SSL *ssl, int fd)
 146 {
 147         return SSL_set_wfd(ssl, _get_osfhandle(fd));
 148 }
 149 #define SSL_set_wfd mingw_SSL_set_wfd
 150 #endif
 151
 152 /*
 153  * implementations of missing functions
 154  */
 155
 156 int pipe(int filedes[2]);
 157 unsigned int sleep (unsigned int seconds);
 158 int mkstemp(char *template);
 159 int gettimeofday(struct timeval *tv, void *tz);
 160 struct tm *gmtime_r(const time_t *timep, struct tm *result);
 161 struct tm *localtime_r(const time_t *timep, struct tm *result);
 162 int getpagesize(void);  /* defined in MinGW's libgcc.a */
 163 struct passwd *getpwuid(uid_t uid);
 164 int setitimer(int type, struct itimerval *in, struct itimerval *out);
 165 int sigaction(int sig, struct sigaction *in, struct sigaction *out);
 166 int link(const char *oldpath, const char *newpath);
 167
 168 /*
 169  * replacements of existing functions
 170  */
 171
 172 int mingw_unlink(const char *pathname);
 173 #define unlink mingw_unlink
 174
 175 int mingw_rmdir(const char *path);
 176 #define rmdir mingw_rmdir
 177
 178 int mingw_open (const char *filename, int oflags, ...);
 179 #define open mingw_open
 180
 181 ssize_t mingw_write(int fd, const void *buf, size_t count);
 182 #define write mingw_write
 183
 184 FILE *mingw_fopen (const char *filename, const char *otype);
 185 #define fopen mingw_fopen
 186
 187 FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream);
 188 #define freopen mingw_freopen
 189
 190 char *mingw_getcwd(char *pointer, int len);
 191 #define getcwd mingw_getcwd
 192
 193 char *mingw_getenv(const char *name);
 194 #define getenv mingw_getenv
 195
 196 int mingw_gethostname(char *host, int namelen);
 197 #define gethostname mingw_gethostname
 198
 199 struct hostent *mingw_gethostbyname(const char *host);
 200 #define gethostbyname mingw_gethostbyname
 201
 202 void mingw_freeaddrinfo(struct addrinfo *res);
 203 #define freeaddrinfo mingw_freeaddrinfo
 204
 205 int mingw_getaddrinfo(const char *node, const char *service,
 206                       const struct addrinfo *hints, struct addrinfo **res);
 207 #define getaddrinfo mingw_getaddrinfo
 208
 209 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
 210                       char *host, DWORD hostlen, char *serv, DWORD servlen,
 211                       int flags);
 212 #define getnameinfo mingw_getnameinfo
 213
 214 int mingw_socket(int domain, int type, int protocol);
 215 #define socket mingw_socket
 216
 217 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 218 #define connect mingw_connect
 219
 220 int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz);
 221 #define bind mingw_bind
 222
 223 int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen);
 224 #define setsockopt mingw_setsockopt
 225
 226 int mingw_shutdown(int sockfd, int how);
 227 #define shutdown mingw_shutdown
 228
 229 int mingw_listen(int sockfd, int backlog);
 230 #define listen mingw_listen
 231
 232 int mingw_accept(int sockfd, struct sockaddr *sa, socklen_t *sz);
 233 #define accept mingw_accept
 234
 235 int mingw_rename(const char*, const char*);
 236 #define rename mingw_rename
 237
 238 #if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
 239 int mingw_getpagesize(void);
 240 #define getpagesize mingw_getpagesize
 241 #endif
 242
 243 struct rlimit {
 244         unsigned int rlim_cur;
 245 };
 246 #define RLIMIT_NOFILE 0
 247
 248 static inline int getrlimit(int resource, struct rlimit *rlp)
 249 {
 250         if (resource != RLIMIT_NOFILE) {
 251                 errno = EINVAL;
 252                 return -1;
 253         }
 254
 255         rlp->rlim_cur = 2048;
 256         return 0;
 257 }
 258
 259 /* Use mingw_lstat() instead of lstat()/stat() and
 260  * mingw_fstat() instead of fstat() on Windows.
 261  */
 262 #define off_t off64_t
 263 #define lseek _lseeki64
 264 #ifndef ALREADY_DECLARED_STAT_FUNCS
 265 #define stat _stati64
 266 int mingw_lstat(const char *file_name, struct stat *buf);
 267 int mingw_stat(const char *file_name, struct stat *buf);
 268 int mingw_fstat(int fd, struct stat *buf);
 269 #define fstat mingw_fstat
 270 #define lstat mingw_lstat
 271 #define _stati64(x,y) mingw_stat(x,y)
 272 #endif
 273
 274 int mingw_utime(const char *file_name, const struct utimbuf *times);
 275 #define utime mingw_utime
 276
 277 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
 278                      const char *dir,
 279                      int fhin, int fhout, int fherr);
 280 void mingw_execvp(const char *cmd, char *const *argv);
 281 #define execvp mingw_execvp
 282 void mingw_execv(const char *cmd, char *const *argv);
 283 #define execv mingw_execv
 284
 285 static inline unsigned int git_ntohl(unsigned int x)
 286 { return (unsigned int)ntohl(x); }
 287 #define ntohl git_ntohl
 288
 289 sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 290 #define signal mingw_signal
 291
 292 /*
 293  * ANSI emulation wrappers
 294  */
 295
 296 int winansi_fputs(const char *str, FILE *stream);
 297 int winansi_printf(const char *format, ...) __attribute__((format (printf, 1, 2)));
 298 int winansi_fprintf(FILE *stream, const char *format, ...) __attribute__((format (printf, 2, 3)));
 299 int winansi_vfprintf(FILE *stream, const char *format, va_list list);
 300 #define fputs winansi_fputs
 301 #define printf(...) winansi_printf(__VA_ARGS__)
 302 #define fprintf(...) winansi_fprintf(__VA_ARGS__)
 303 #define vfprintf winansi_vfprintf
 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()