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 static inline int mingw_mkdir(const char *path, int mode)
 117 {
 118         return mkdir(path);
 119 }
 120 #define mkdir mingw_mkdir
 121
 122 static inline int mingw_unlink(const char *pathname)
 123 {
 124         /* read-only files cannot be removed */
 125         chmod(pathname, 0666);
 126         return unlink(pathname);
 127 }
 128 #define unlink mingw_unlink
 129
 130 #define WNOHANG 1
 131 pid_t waitpid(pid_t pid, int *status, unsigned options);
 132
 133 #define kill mingw_kill
 134 int mingw_kill(pid_t pid, int sig);
 135
 136 #ifndef NO_OPENSSL
 137 #include <openssl/ssl.h>
 138 static inline int mingw_SSL_set_fd(SSL *ssl, int fd)
 139 {
 140         return SSL_set_fd(ssl, _get_osfhandle(fd));
 141 }
 142 #define SSL_set_fd mingw_SSL_set_fd
 143
 144 static inline int mingw_SSL_set_rfd(SSL *ssl, int fd)
 145 {
 146         return SSL_set_rfd(ssl, _get_osfhandle(fd));
 147 }
 148 #define SSL_set_rfd mingw_SSL_set_rfd
 149
 150 static inline int mingw_SSL_set_wfd(SSL *ssl, int fd)
 151 {
 152         return SSL_set_wfd(ssl, _get_osfhandle(fd));
 153 }
 154 #define SSL_set_wfd mingw_SSL_set_wfd
 155 #endif
 156
 157 /*
 158  * implementations of missing functions
 159  */
 160
 161 int pipe(int filedes[2]);
 162 unsigned int sleep (unsigned int seconds);
 163 int mkstemp(char *template);
 164 int gettimeofday(struct timeval *tv, void *tz);
 165 struct tm *gmtime_r(const time_t *timep, struct tm *result);
 166 struct tm *localtime_r(const time_t *timep, struct tm *result);
 167 int getpagesize(void);  /* defined in MinGW's libgcc.a */
 168 struct passwd *getpwuid(uid_t uid);
 169 int setitimer(int type, struct itimerval *in, struct itimerval *out);
 170 int sigaction(int sig, struct sigaction *in, struct sigaction *out);
 171 int link(const char *oldpath, const char *newpath);
 172
 173 /*
 174  * replacements of existing functions
 175  */
 176
 177 int mingw_open (const char *filename, int oflags, ...);
 178 #define open mingw_open
 179
 180 ssize_t mingw_write(int fd, const void *buf, size_t count);
 181 #define write mingw_write
 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 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 struct hostent *mingw_gethostbyname(const char *host);
 196 #define gethostbyname mingw_gethostbyname
 197
 198 void mingw_freeaddrinfo(struct addrinfo *res);
 199 #define freeaddrinfo mingw_freeaddrinfo
 200
 201 int mingw_getaddrinfo(const char *node, const char *service,
 202                       const struct addrinfo *hints, struct addrinfo **res);
 203 #define getaddrinfo mingw_getaddrinfo
 204
 205 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
 206                       char *host, DWORD hostlen, char *serv, DWORD servlen,
 207                       int flags);
 208 #define getnameinfo mingw_getnameinfo
 209
 210 int mingw_socket(int domain, int type, int protocol);
 211 #define socket mingw_socket
 212
 213 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 214 #define connect mingw_connect
 215
 216 int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz);
 217 #define bind mingw_bind
 218
 219 int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen);
 220 #define setsockopt mingw_setsockopt
 221
 222 int mingw_listen(int sockfd, int backlog);
 223 #define listen mingw_listen
 224
 225 int mingw_accept(int sockfd, struct sockaddr *sa, socklen_t *sz);
 226 #define accept mingw_accept
 227
 228 int mingw_rename(const char*, const char*);
 229 #define rename mingw_rename
 230
 231 #if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
 232 int mingw_getpagesize(void);
 233 #define getpagesize mingw_getpagesize
 234 #endif
 235
 236 struct rlimit {
 237         unsigned int rlim_cur;
 238 };
 239 #define RLIMIT_NOFILE 0
 240
 241 static inline int getrlimit(int resource, struct rlimit *rlp)
 242 {
 243         if (resource != RLIMIT_NOFILE) {
 244                 errno = EINVAL;
 245                 return -1;
 246         }
 247
 248         rlp->rlim_cur = 2048;
 249         return 0;
 250 }
 251
 252 /* Use mingw_lstat() instead of lstat()/stat() and
 253  * mingw_fstat() instead of fstat() on Windows.
 254  */
 255 #define off_t off64_t
 256 #define lseek _lseeki64
 257 #ifndef ALREADY_DECLARED_STAT_FUNCS
 258 #define stat _stati64
 259 int mingw_lstat(const char *file_name, struct stat *buf);
 260 int mingw_stat(const char *file_name, struct stat *buf);
 261 int mingw_fstat(int fd, struct stat *buf);
 262 #define fstat mingw_fstat
 263 #define lstat mingw_lstat
 264 #define _stati64(x,y) mingw_stat(x,y)
 265 #endif
 266
 267 int mingw_utime(const char *file_name, const struct utimbuf *times);
 268 #define utime mingw_utime
 269
 270 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
 271                      const char *dir,
 272                      int fhin, int fhout, int fherr);
 273 void mingw_execvp(const char *cmd, char *const *argv);
 274 #define execvp mingw_execvp
 275 void mingw_execv(const char *cmd, char *const *argv);
 276 #define execv mingw_execv
 277
 278 static inline unsigned int git_ntohl(unsigned int x)
 279 { return (unsigned int)ntohl(x); }
 280 #define ntohl git_ntohl
 281
 282 sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 283 #define signal mingw_signal
 284
 285 /*
 286  * ANSI emulation wrappers
 287  */
 288
 289 int winansi_fputs(const char *str, FILE *stream);
 290 int winansi_printf(const char *format, ...) __attribute__((format (printf, 1, 2)));
 291 int winansi_fprintf(FILE *stream, const char *format, ...) __attribute__((format (printf, 2, 3)));
 292 #define fputs winansi_fputs
 293 #define printf(...) winansi_printf(__VA_ARGS__)
 294 #define fprintf(...) winansi_fprintf(__VA_ARGS__)
 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 #define PATH_SEP ';'
 303 #define PRIuMAX "I64u"
 304
 305 void mingw_open_html(const char *path);
 306 #define open_html mingw_open_html
 307
 308 /*
 309  * helpers
 310  */
 311
 312 char **make_augmented_environ(const char *const *vars);
 313 void free_environ(char **env);
 314
 315 /*
 316  * A replacement of main() that ensures that argv[0] has a path
 317  * and that default fmode and std(in|out|err) are in binary mode
 318  */
 319
 320 #define main(c,v) dummy_decl_mingw_main(); \
 321 static int mingw_main(); \
 322 int main(int argc, const char **argv) \
 323 { \
 324         extern CRITICAL_SECTION pinfo_cs; \
 325         _fmode = _O_BINARY; \
 326         _setmode(_fileno(stdin), _O_BINARY); \
 327         _setmode(_fileno(stdout), _O_BINARY); \
 328         _setmode(_fileno(stderr), _O_BINARY); \
 329         argv[0] = xstrdup(_pgmptr); \
 330         InitializeCriticalSection(&pinfo_cs); \
 331         return mingw_main(argc, argv); \
 332 } \
 333 static int mingw_main(c,v)
 334
 335 /*
 336  * Used by Pthread API implementation for Windows
 337  */
 338 extern int err_win_to_posix(DWORD winerr);