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 #define S_ISUID 0
  26 #define S_ISGID 0
  27 #define S_ISVTX 0
  28
  29 #define WIFEXITED(x) 1
  30 #define WIFSIGNALED(x) 0
  31 #define WEXITSTATUS(x) ((x) & 0xff)
  32 #define WTERMSIG(x) SIGTERM
  33
  34 #define EWOULDBLOCK EAGAIN
  35 #define SHUT_WR SD_SEND
  36
  37 #define SIGHUP 1
  38 #define SIGQUIT 3
  39 #define SIGKILL 9
  40 #define SIGPIPE 13
  41 #define SIGALRM 14
  42 #define SIGCHLD 17
  43
  44 #define F_GETFD 1
  45 #define F_SETFD 2
  46 #define FD_CLOEXEC 0x1
  47
  48 #define EAFNOSUPPORT WSAEAFNOSUPPORT
  49 #define ECONNABORTED WSAECONNABORTED
  50
  51 struct passwd {
  52         char *pw_name;
  53         char *pw_gecos;
  54         char *pw_dir;
  55 };
  56
  57 extern char *getpass(const char *prompt);
  58
  59 typedef void (__cdecl *sig_handler_t)(int);
  60 struct sigaction {
  61         sig_handler_t sa_handler;
  62         unsigned sa_flags;
  63 };
  64 #define sigemptyset(x) (void)0
  65 #define SA_RESTART 0
  66
  67 struct itimerval {
  68         struct timeval it_value, it_interval;
  69 };
  70 #define ITIMER_REAL 0
  71
  72 /*
  73  * sanitize preprocessor namespace polluted by Windows headers defining
  74  * macros which collide with git local versions
  75  */
  76 #undef HELP_COMMAND /* from winuser.h */
  77
  78 /*
  79  * trivial stubs
  80  */
  81
  82 static inline int readlink(const char *path, char *buf, size_t bufsiz)
  83 { errno = ENOSYS; return -1; }
  84 static inline int symlink(const char *oldpath, const char *newpath)
  85 { errno = ENOSYS; return -1; }
  86 static inline int fchmod(int fildes, mode_t mode)
  87 { errno = ENOSYS; return -1; }
  88 static inline pid_t fork(void)
  89 { errno = ENOSYS; return -1; }
  90 static inline unsigned int alarm(unsigned int seconds)
  91 { return 0; }
  92 static inline int fsync(int fd)
  93 { return _commit(fd); }
  94 static inline pid_t getppid(void)
  95 { return 1; }
  96 static inline void sync(void)
  97 {}
  98 static inline uid_t getuid(void)
  99 { return 1; }
 100 static inline struct passwd *getpwnam(const char *name)
 101 { return NULL; }
 102 static inline int fcntl(int fd, int cmd, ...)
 103 {
 104         if (cmd == F_GETFD || cmd == F_SETFD)
 105                 return 0;
 106         errno = EINVAL;
 107         return -1;
 108 }
 109 /* bash cannot reliably detect negative return codes as failure */
 110 #define exit(code) exit((code) & 0xff)
 111
 112 /*
 113  * simple adaptors
 114  */
 115
 116 int mingw_mkdir(const char *path, int mode);
 117 #define mkdir mingw_mkdir
 118
 119 #define WNOHANG 1
 120 pid_t waitpid(pid_t pid, int *status, unsigned options);
 121
 122 #define kill mingw_kill
 123 int mingw_kill(pid_t pid, int sig);
 124
 125 #ifndef NO_OPENSSL
 126 #include <openssl/ssl.h>
 127 static inline int mingw_SSL_set_fd(SSL *ssl, int fd)
 128 {
 129         return SSL_set_fd(ssl, _get_osfhandle(fd));
 130 }
 131 #define SSL_set_fd mingw_SSL_set_fd
 132
 133 static inline int mingw_SSL_set_rfd(SSL *ssl, int fd)
 134 {
 135         return SSL_set_rfd(ssl, _get_osfhandle(fd));
 136 }
 137 #define SSL_set_rfd mingw_SSL_set_rfd
 138
 139 static inline int mingw_SSL_set_wfd(SSL *ssl, int fd)
 140 {
 141         return SSL_set_wfd(ssl, _get_osfhandle(fd));
 142 }
 143 #define SSL_set_wfd mingw_SSL_set_wfd
 144 #endif
 145
 146 /*
 147  * implementations of missing functions
 148  */
 149
 150 int pipe(int filedes[2]);
 151 unsigned int sleep (unsigned int seconds);
 152 int mkstemp(char *template);
 153 int gettimeofday(struct timeval *tv, void *tz);
 154 struct tm *gmtime_r(const time_t *timep, struct tm *result);
 155 struct tm *localtime_r(const time_t *timep, struct tm *result);
 156 int getpagesize(void);  /* defined in MinGW's libgcc.a */
 157 struct passwd *getpwuid(uid_t uid);
 158 int setitimer(int type, struct itimerval *in, struct itimerval *out);
 159 int sigaction(int sig, struct sigaction *in, struct sigaction *out);
 160 int link(const char *oldpath, const char *newpath);
 161
 162 /*
 163  * replacements of existing functions
 164  */
 165
 166 int mingw_unlink(const char *pathname);
 167 #define unlink mingw_unlink
 168
 169 int mingw_rmdir(const char *path);
 170 #define rmdir mingw_rmdir
 171
 172 int mingw_open (const char *filename, int oflags, ...);
 173 #define open mingw_open
 174
 175 ssize_t mingw_write(int fd, const void *buf, size_t count);
 176 #define write mingw_write
 177
 178 FILE *mingw_fopen (const char *filename, const char *otype);
 179 #define fopen mingw_fopen
 180
 181 FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream);
 182 #define freopen mingw_freopen
 183
 184 char *mingw_getcwd(char *pointer, int len);
 185 #define getcwd mingw_getcwd
 186
 187 char *mingw_getenv(const char *name);
 188 #define getenv mingw_getenv
 189
 190 struct hostent *mingw_gethostbyname(const char *host);
 191 #define gethostbyname mingw_gethostbyname
 192
 193 void mingw_freeaddrinfo(struct addrinfo *res);
 194 #define freeaddrinfo mingw_freeaddrinfo
 195
 196 int mingw_getaddrinfo(const char *node, const char *service,
 197                       const struct addrinfo *hints, struct addrinfo **res);
 198 #define getaddrinfo mingw_getaddrinfo
 199
 200 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
 201                       char *host, DWORD hostlen, char *serv, DWORD servlen,
 202                       int flags);
 203 #define getnameinfo mingw_getnameinfo
 204
 205 int mingw_socket(int domain, int type, int protocol);
 206 #define socket mingw_socket
 207
 208 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 209 #define connect mingw_connect
 210
 211 int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz);
 212 #define bind mingw_bind
 213
 214 int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen);
 215 #define setsockopt mingw_setsockopt
 216
 217 int mingw_shutdown(int sockfd, int how);
 218 #define shutdown mingw_shutdown
 219
 220 int mingw_listen(int sockfd, int backlog);
 221 #define listen mingw_listen
 222
 223 int mingw_accept(int sockfd, struct sockaddr *sa, socklen_t *sz);
 224 #define accept mingw_accept
 225
 226 int mingw_rename(const char*, const char*);
 227 #define rename mingw_rename
 228
 229 #if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
 230 int mingw_getpagesize(void);
 231 #define getpagesize mingw_getpagesize
 232 #endif
 233
 234 struct rlimit {
 235         unsigned int rlim_cur;
 236 };
 237 #define RLIMIT_NOFILE 0
 238
 239 static inline int getrlimit(int resource, struct rlimit *rlp)
 240 {
 241         if (resource != RLIMIT_NOFILE) {
 242                 errno = EINVAL;
 243                 return -1;
 244         }
 245
 246         rlp->rlim_cur = 2048;
 247         return 0;
 248 }
 249
 250 /* Use mingw_lstat() instead of lstat()/stat() and
 251  * mingw_fstat() instead of fstat() on Windows.
 252  */
 253 #define off_t off64_t
 254 #define lseek _lseeki64
 255 #ifndef ALREADY_DECLARED_STAT_FUNCS
 256 #define stat _stati64
 257 int mingw_lstat(const char *file_name, struct stat *buf);
 258 int mingw_stat(const char *file_name, struct stat *buf);
 259 int mingw_fstat(int fd, struct stat *buf);
 260 #define fstat mingw_fstat
 261 #define lstat mingw_lstat
 262 #define _stati64(x,y) mingw_stat(x,y)
 263 #endif
 264
 265 int mingw_utime(const char *file_name, const struct utimbuf *times);
 266 #define utime mingw_utime
 267
 268 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
 269                      const char *dir,
 270                      int fhin, int fhout, int fherr);
 271 void mingw_execvp(const char *cmd, char *const *argv);
 272 #define execvp mingw_execvp
 273 void mingw_execv(const char *cmd, char *const *argv);
 274 #define execv mingw_execv
 275
 276 static inline unsigned int git_ntohl(unsigned int x)
 277 { return (unsigned int)ntohl(x); }
 278 #define ntohl git_ntohl
 279
 280 sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 281 #define signal mingw_signal
 282
 283 /*
 284  * ANSI emulation wrappers
 285  */
 286
 287 int winansi_fputs(const char *str, FILE *stream);
 288 int winansi_printf(const char *format, ...) __attribute__((format (printf, 1, 2)));
 289 int winansi_fprintf(FILE *stream, const char *format, ...) __attribute__((format (printf, 2, 3)));
 290 int winansi_vfprintf(FILE *stream, const char *format, va_list list);
 291 #define fputs winansi_fputs
 292 #define printf(...) winansi_printf(__VA_ARGS__)
 293 #define fprintf(...) winansi_fprintf(__VA_ARGS__)
 294 #define vfprintf winansi_vfprintf
 295
 296 /*
 297  * git specific compatibility
 298  */
 299
 300 #define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
 301 #define is_dir_sep(c) ((c) == '/' || (c) == '\\')
 302 static inline char *mingw_find_last_dir_sep(const char *path)
 303 {
 304         char *ret = NULL;
 305         for (; *path; ++path)
 306                 if (is_dir_sep(*path))
 307                         ret = (char *)path;
 308         return ret;
 309 }
 310 #define find_last_dir_sep mingw_find_last_dir_sep
 311 int mingw_offset_1st_component(const char *path);
 312 #define offset_1st_component mingw_offset_1st_component
 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);
 353
 354 extern const char *get_windows_home_directory();
 355 #define get_home_directory() get_windows_home_directory()