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 #define hstrerror strerror
  11
  12 #define S_IFLNK    0120000 /* Symbolic link */
  13 #define S_ISLNK(x) (((x) & S_IFMT) == S_IFLNK)
  14 #define S_ISSOCK(x) 0
  15
  16 #ifndef _STAT_H_
  17 #define S_IRUSR 0
  18 #define S_IWUSR 0
  19 #define S_IXUSR 0
  20 #define S_IRWXU (S_IRUSR | S_IWUSR | S_IXUSR)
  21 #endif
  22 #define S_IRGRP 0
  23 #define S_IWGRP 0
  24 #define S_IXGRP 0
  25 #define S_IRWXG (S_IRGRP | S_IWGRP | S_IXGRP)
  26 #define S_IROTH 0
  27 #define S_IWOTH 0
  28 #define S_IXOTH 0
  29 #define S_IRWXO (S_IROTH | S_IWOTH | S_IXOTH)
  30 #define S_ISUID 0
  31 #define S_ISGID 0
  32 #define S_ISVTX 0
  33
  34 #define WIFEXITED(x) 1
  35 #define WIFSIGNALED(x) 0
  36 #define WEXITSTATUS(x) ((x) & 0xff)
  37 #define WTERMSIG(x) SIGTERM
  38
  39 #define EWOULDBLOCK EAGAIN
  40 #define SHUT_WR SD_SEND
  41
  42 #define SIGHUP 1
  43 #define SIGQUIT 3
  44 #define SIGKILL 9
  45 #define SIGPIPE 13
  46 #define SIGALRM 14
  47 #define SIGCHLD 17
  48
  49 #define F_GETFD 1
  50 #define F_SETFD 2
  51 #define FD_CLOEXEC 0x1
  52
  53 struct passwd {
  54         char *pw_name;
  55         char *pw_gecos;
  56         char *pw_dir;
  57 };
  58
  59 extern char *getpass(const char *prompt);
  60
  61 #ifndef POLLIN
  62 struct pollfd {
  63         int fd;           /* file descriptor */
  64         short events;     /* requested events */
  65         short revents;    /* returned events */
  66 };
  67 #define POLLIN 1
  68 #define POLLHUP 2
  69 #define POLLOUT 4
  70 #define POLLNVAL 8
  71 #endif
  72
  73 typedef void (__cdecl *sig_handler_t)(int);
  74 struct sigaction {
  75         sig_handler_t sa_handler;
  76         unsigned sa_flags;
  77 };
  78 #define sigemptyset(x) (void)0
  79 #define SA_RESTART 0
  80
  81 struct itimerval {
  82         struct timeval it_value, it_interval;
  83 };
  84 #define ITIMER_REAL 0
  85
  86 /*
  87  * sanitize preprocessor namespace polluted by Windows headers defining
  88  * macros which collide with git local versions
  89  */
  90 #undef HELP_COMMAND /* from winuser.h */
  91
  92 /*
  93  * trivial stubs
  94  */
  95
  96 static inline int readlink(const char *path, char *buf, size_t bufsiz)
  97 { errno = ENOSYS; return -1; }
  98 static inline int symlink(const char *oldpath, const char *newpath)
  99 { errno = ENOSYS; return -1; }
 100 static inline int fchmod(int fildes, mode_t mode)
 101 { errno = ENOSYS; return -1; }
 102 static inline pid_t fork(void)
 103 { errno = ENOSYS; return -1; }
 104 static inline unsigned int alarm(unsigned int seconds)
 105 { return 0; }
 106 static inline int fsync(int fd)
 107 { return _commit(fd); }
 108 static inline pid_t getppid(void)
 109 { return 1; }
 110 static inline void sync(void)
 111 {}
 112 static inline uid_t getuid(void)
 113 { return 1; }
 114 static inline struct passwd *getpwnam(const char *name)
 115 { return NULL; }
 116 static inline int fcntl(int fd, int cmd, ...)
 117 {
 118         if (cmd == F_GETFD || cmd == F_SETFD)
 119                 return 0;
 120         errno = EINVAL;
 121         return -1;
 122 }
 123 /* bash cannot reliably detect negative return codes as failure */
 124 #define exit(code) exit((code) & 0xff)
 125
 126 /*
 127  * simple adaptors
 128  */
 129
 130 static inline int mingw_mkdir(const char *path, int mode)
 131 {
 132         return mkdir(path);
 133 }
 134 #define mkdir mingw_mkdir
 135
 136 static inline int mingw_unlink(const char *pathname)
 137 {
 138         /* read-only files cannot be removed */
 139         chmod(pathname, 0666);
 140         return unlink(pathname);
 141 }
 142 #define unlink mingw_unlink
 143
 144 static inline pid_t waitpid(pid_t pid, int *status, unsigned options)
 145 {
 146         if (options == 0)
 147                 return _cwait(status, pid, 0);
 148         errno = EINVAL;
 149         return -1;
 150 }
 151
 152 #ifndef NO_OPENSSL
 153 #include <openssl/ssl.h>
 154 static inline int mingw_SSL_set_fd(SSL *ssl, int fd)
 155 {
 156         return SSL_set_fd(ssl, _get_osfhandle(fd));
 157 }
 158 #define SSL_set_fd mingw_SSL_set_fd
 159
 160 static inline int mingw_SSL_set_rfd(SSL *ssl, int fd)
 161 {
 162         return SSL_set_rfd(ssl, _get_osfhandle(fd));
 163 }
 164 #define SSL_set_rfd mingw_SSL_set_rfd
 165
 166 static inline int mingw_SSL_set_wfd(SSL *ssl, int fd)
 167 {
 168         return SSL_set_wfd(ssl, _get_osfhandle(fd));
 169 }
 170 #define SSL_set_wfd mingw_SSL_set_wfd
 171 #endif
 172
 173 /*
 174  * implementations of missing functions
 175  */
 176
 177 int pipe(int filedes[2]);
 178 unsigned int sleep (unsigned int seconds);
 179 int mkstemp(char *template);
 180 int gettimeofday(struct timeval *tv, void *tz);
 181 int poll(struct pollfd *ufds, unsigned int nfds, int timeout);
 182 struct tm *gmtime_r(const time_t *timep, struct tm *result);
 183 struct tm *localtime_r(const time_t *timep, struct tm *result);
 184 int getpagesize(void);  /* defined in MinGW's libgcc.a */
 185 struct passwd *getpwuid(uid_t uid);
 186 int setitimer(int type, struct itimerval *in, struct itimerval *out);
 187 int sigaction(int sig, struct sigaction *in, struct sigaction *out);
 188 int link(const char *oldpath, const char *newpath);
 189
 190 /*
 191  * replacements of existing functions
 192  */
 193
 194 int mingw_open (const char *filename, int oflags, ...);
 195 #define open mingw_open
 196
 197 ssize_t mingw_write(int fd, const void *buf, size_t count);
 198 #define write mingw_write
 199
 200 FILE *mingw_fopen (const char *filename, const char *otype);
 201 #define fopen mingw_fopen
 202
 203 FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream);
 204 #define freopen mingw_freopen
 205
 206 char *mingw_getcwd(char *pointer, int len);
 207 #define getcwd mingw_getcwd
 208
 209 char *mingw_getenv(const char *name);
 210 #define getenv mingw_getenv
 211
 212 struct hostent *mingw_gethostbyname(const char *host);
 213 #define gethostbyname mingw_gethostbyname
 214
 215 void mingw_freeaddrinfo(struct addrinfo *res);
 216 #define freeaddrinfo mingw_freeaddrinfo
 217
 218 int mingw_getaddrinfo(const char *node, const char *service,
 219                       const struct addrinfo *hints, struct addrinfo **res);
 220 #define getaddrinfo mingw_getaddrinfo
 221
 222 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
 223                       char *host, DWORD hostlen, char *serv, DWORD servlen,
 224                       int flags);
 225 #define getnameinfo mingw_getnameinfo
 226
 227 int mingw_socket(int domain, int type, int protocol);
 228 #define socket mingw_socket
 229
 230 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 231 #define connect mingw_connect
 232
 233 int mingw_rename(const char*, const char*);
 234 #define rename mingw_rename
 235
 236 #if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
 237 int mingw_getpagesize(void);
 238 #define getpagesize mingw_getpagesize
 239 #endif
 240
 241 /* Use mingw_lstat() instead of lstat()/stat() and
 242  * mingw_fstat() instead of fstat() on Windows.
 243  */
 244 #define off_t off64_t
 245 #define lseek _lseeki64
 246 #ifndef ALREADY_DECLARED_STAT_FUNCS
 247 #define stat _stati64
 248 int mingw_lstat(const char *file_name, struct stat *buf);
 249 int mingw_stat(const char *file_name, struct stat *buf);
 250 int mingw_fstat(int fd, struct stat *buf);
 251 #define fstat mingw_fstat
 252 #define lstat mingw_lstat
 253 #define _stati64(x,y) mingw_stat(x,y)
 254 #endif
 255
 256 int mingw_utime(const char *file_name, const struct utimbuf *times);
 257 #define utime mingw_utime
 258
 259 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
 260                      const char *dir,
 261                      int fhin, int fhout, int fherr);
 262 void mingw_execvp(const char *cmd, char *const *argv);
 263 #define execvp mingw_execvp
 264 void mingw_execv(const char *cmd, char *const *argv);
 265 #define execv mingw_execv
 266
 267 static inline unsigned int git_ntohl(unsigned int x)
 268 { return (unsigned int)ntohl(x); }
 269 #define ntohl git_ntohl
 270
 271 sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 272 #define signal mingw_signal
 273
 274 /*
 275  * ANSI emulation wrappers
 276  */
 277
 278 int winansi_fputs(const char *str, FILE *stream);
 279 int winansi_printf(const char *format, ...) __attribute__((format (printf, 1, 2)));
 280 int winansi_fprintf(FILE *stream, const char *format, ...) __attribute__((format (printf, 2, 3)));
 281 #define fputs winansi_fputs
 282 #define printf(...) winansi_printf(__VA_ARGS__)
 283 #define fprintf(...) winansi_fprintf(__VA_ARGS__)
 284
 285 /*
 286  * git specific compatibility
 287  */
 288
 289 #define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
 290 #define is_dir_sep(c) ((c) == '/' || (c) == '\\')
 291 #define PATH_SEP ';'
 292 #define PRIuMAX "I64u"
 293
 294 void mingw_open_html(const char *path);
 295 #define open_html mingw_open_html
 296
 297 /*
 298  * helpers
 299  */
 300
 301 char **make_augmented_environ(const char *const *vars);
 302 void free_environ(char **env);
 303
 304 /*
 305  * A replacement of main() that ensures that argv[0] has a path
 306  * and that default fmode and std(in|out|err) are in binary mode
 307  */
 308
 309 #define main(c,v) dummy_decl_mingw_main(); \
 310 static int mingw_main(); \
 311 int main(int argc, const char **argv) \
 312 { \
 313         _fmode = _O_BINARY; \
 314         _setmode(_fileno(stdin), _O_BINARY); \
 315         _setmode(_fileno(stdout), _O_BINARY); \
 316         _setmode(_fileno(stderr), _O_BINARY); \
 317         argv[0] = xstrdup(_pgmptr); \
 318         return mingw_main(argc, argv); \
 319 } \
 320 static int mingw_main(c,v)
 321
 322 #ifndef NO_MINGW_REPLACE_READDIR
 323 /*
 324  * A replacement of readdir, to ensure that it reads the file type at
 325  * the same time. This avoid extra unneeded lstats in git on MinGW
 326  */
 327 #undef DT_UNKNOWN
 328 #undef DT_DIR
 329 #undef DT_REG
 330 #undef DT_LNK
 331 #define DT_UNKNOWN      0
 332 #define DT_DIR          1
 333 #define DT_REG          2
 334 #define DT_LNK          3
 335
 336 struct mingw_dirent
 337 {
 338         long            d_ino;                  /* Always zero. */
 339         union {
 340                 unsigned short  d_reclen;       /* Always zero. */
 341                 unsigned char   d_type;         /* Reimplementation adds this */
 342         };
 343         unsigned short  d_namlen;               /* Length of name in d_name. */
 344         char            d_name[FILENAME_MAX];   /* File name. */
 345 };
 346 #define dirent mingw_dirent
 347 #define readdir(x) mingw_readdir(x)
 348 struct dirent *mingw_readdir(DIR *dir);
 349 #endif // !NO_MINGW_REPLACE_READDIR
 350
 351 /*
 352  * Used by Pthread API implementation for Windows
 353  */
 354 extern int err_win_to_posix(DWORD winerr);