compat/mingw.h

   1 #define _WIN32_WINNT 0x0501
   2 #include <winsock2.h>
   3 #include <ws2tcpip.h>
   4
   5 /*
   6  * things that are not available in header files
   7  */
   8
   9 typedef int pid_t;
  10 typedef int uid_t;
  11 typedef int socklen_t;
  12 #define hstrerror strerror
  13
  14 #define S_IFLNK    0120000 /* Symbolic link */
  15 #define S_ISLNK(x) (((x) & S_IFMT) == S_IFLNK)
  16 #define S_ISSOCK(x) 0
  17
  18 #define S_IRGRP 0
  19 #define S_IWGRP 0
  20 #define S_IXGRP 0
  21 #define S_IRWXG (S_IRGRP | S_IWGRP | S_IXGRP)
  22 #define S_IROTH 0
  23 #define S_IWOTH 0
  24 #define S_IXOTH 0
  25 #define S_IRWXO (S_IROTH | S_IWOTH | S_IXOTH)
  26
  27 #define S_ISUID 0004000
  28 #define S_ISGID 0002000
  29 #define S_ISVTX 0001000
  30
  31 #define WIFEXITED(x) 1
  32 #define WIFSIGNALED(x) 0
  33 #define WEXITSTATUS(x) ((x) & 0xff)
  34 #define WTERMSIG(x) SIGTERM
  35
  36 #define EWOULDBLOCK EAGAIN
  37 #define SHUT_WR SD_SEND
  38
  39 #define SIGHUP 1
  40 #define SIGQUIT 3
  41 #define SIGKILL 9
  42 #define SIGPIPE 13
  43 #define SIGALRM 14
  44 #define SIGCHLD 17
  45
  46 #define F_GETFD 1
  47 #define F_SETFD 2
  48 #define FD_CLOEXEC 0x1
  49
  50 #define EAFNOSUPPORT WSAEAFNOSUPPORT
  51 #define ECONNABORTED WSAECONNABORTED
  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 typedef void (__cdecl *sig_handler_t)(int);
  62 struct sigaction {
  63         sig_handler_t sa_handler;
  64         unsigned sa_flags;
  65 };
  66 #define sigemptyset(x) (void)0
  67 #define SA_RESTART 0
  68
  69 struct itimerval {
  70         struct timeval it_value, it_interval;
  71 };
  72 #define ITIMER_REAL 0
  73
  74 /*
  75  * sanitize preprocessor namespace polluted by Windows headers defining
  76  * macros which collide with git local versions
  77  */
  78 #undef HELP_COMMAND /* from winuser.h */
  79
  80 /*
  81  * trivial stubs
  82  */
  83
  84 static inline int readlink(const char *path, char *buf, size_t bufsiz)
  85 { errno = ENOSYS; return -1; }
  86 static inline int symlink(const char *oldpath, const char *newpath)
  87 { errno = ENOSYS; return -1; }
  88 static inline int fchmod(int fildes, mode_t mode)
  89 { errno = ENOSYS; return -1; }
  90 static inline pid_t fork(void)
  91 { errno = ENOSYS; return -1; }
  92 static inline unsigned int alarm(unsigned int seconds)
  93 { return 0; }
  94 static inline int fsync(int fd)
  95 { return _commit(fd); }
  96 static inline pid_t getppid(void)
  97 { return 1; }
  98 static inline void sync(void)
  99 {}
 100 static inline uid_t getuid(void)
 101 { return 1; }
 102 static inline struct passwd *getpwnam(const char *name)
 103 { return NULL; }
 104 static inline int fcntl(int fd, int cmd, ...)
 105 {
 106         if (cmd == F_GETFD || cmd == F_SETFD)
 107                 return 0;
 108         errno = EINVAL;
 109         return -1;
 110 }
 111 /* bash cannot reliably detect negative return codes as failure */
 112 #define exit(code) exit((code) & 0xff)
 113
 114 /*
 115  * simple adaptors
 116  */
 117
 118 int mingw_mkdir(const char *path, int mode);
 119 #define mkdir mingw_mkdir
 120
 121 #define WNOHANG 1
 122 pid_t waitpid(pid_t pid, int *status, int options);
 123
 124 #define kill mingw_kill
 125 int mingw_kill(pid_t pid, int sig);
 126
 127 #ifndef NO_OPENSSL
 128 #include <openssl/ssl.h>
 129 static inline int mingw_SSL_set_fd(SSL *ssl, int fd)
 130 {
 131         return SSL_set_fd(ssl, _get_osfhandle(fd));
 132 }
 133 #define SSL_set_fd mingw_SSL_set_fd
 134
 135 static inline int mingw_SSL_set_rfd(SSL *ssl, int fd)
 136 {
 137         return SSL_set_rfd(ssl, _get_osfhandle(fd));
 138 }
 139 #define SSL_set_rfd mingw_SSL_set_rfd
 140
 141 static inline int mingw_SSL_set_wfd(SSL *ssl, int fd)
 142 {
 143         return SSL_set_wfd(ssl, _get_osfhandle(fd));
 144 }
 145 #define SSL_set_wfd mingw_SSL_set_wfd
 146 #endif
 147
 148 /*
 149  * implementations of missing functions
 150  */
 151
 152 int pipe(int filedes[2]);
 153 unsigned int sleep (unsigned int seconds);
 154 int mkstemp(char *template);
 155 int gettimeofday(struct timeval *tv, void *tz);
 156 struct tm *gmtime_r(const time_t *timep, struct tm *result);
 157 struct tm *localtime_r(const time_t *timep, struct tm *result);
 158 int getpagesize(void);  /* defined in MinGW's libgcc.a */
 159 struct passwd *getpwuid(uid_t uid);
 160 int setitimer(int type, struct itimerval *in, struct itimerval *out);
 161 int sigaction(int sig, struct sigaction *in, struct sigaction *out);
 162 int link(const char *oldpath, const char *newpath);
 163
 164 /*
 165  * replacements of existing functions
 166  */
 167
 168 int mingw_unlink(const char *pathname);
 169 #define unlink mingw_unlink
 170
 171 int mingw_rmdir(const char *path);
 172 #define rmdir mingw_rmdir
 173
 174 int mingw_open (const char *filename, int oflags, ...);
 175 #define open mingw_open
 176
 177 ssize_t mingw_write(int fd, const void *buf, size_t count);
 178 #define write mingw_write
 179
 180 FILE *mingw_fopen (const char *filename, const char *otype);
 181 #define fopen mingw_fopen
 182
 183 FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream);
 184 #define freopen mingw_freopen
 185
 186 int mingw_access(const char *filename, int mode);
 187 #undef access
 188 #define access mingw_access
 189
 190 int mingw_chdir(const char *dirname);
 191 #define chdir mingw_chdir
 192
 193 int mingw_chmod(const char *filename, int mode);
 194 #define chmod mingw_chmod
 195
 196 char *mingw_mktemp(char *template);
 197 #define mktemp mingw_mktemp
 198
 199 char *mingw_getcwd(char *pointer, int len);
 200 #define getcwd mingw_getcwd
 201
 202 char *mingw_getenv(const char *name);
 203 #define getenv mingw_getenv
 204 int mingw_putenv(const char *namevalue);
 205 #define putenv mingw_putenv
 206 #define unsetenv mingw_putenv
 207
 208 int mingw_gethostname(char *host, int namelen);
 209 #define gethostname mingw_gethostname
 210
 211 struct hostent *mingw_gethostbyname(const char *host);
 212 #define gethostbyname mingw_gethostbyname
 213
 214 void mingw_freeaddrinfo(struct addrinfo *res);
 215 #define freeaddrinfo mingw_freeaddrinfo
 216
 217 int mingw_getaddrinfo(const char *node, const char *service,
 218                       const struct addrinfo *hints, struct addrinfo **res);
 219 #define getaddrinfo mingw_getaddrinfo
 220
 221 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
 222                       char *host, DWORD hostlen, char *serv, DWORD servlen,
 223                       int flags);
 224 #define getnameinfo mingw_getnameinfo
 225
 226 int mingw_socket(int domain, int type, int protocol);
 227 #define socket mingw_socket
 228
 229 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 230 #define connect mingw_connect
 231
 232 int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz);
 233 #define bind mingw_bind
 234
 235 int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen);
 236 #define setsockopt mingw_setsockopt
 237
 238 int mingw_shutdown(int sockfd, int how);
 239 #define shutdown mingw_shutdown
 240
 241 int mingw_listen(int sockfd, int backlog);
 242 #define listen mingw_listen
 243
 244 int mingw_accept(int sockfd, struct sockaddr *sa, socklen_t *sz);
 245 #define accept mingw_accept
 246
 247 int mingw_rename(const char*, const char*);
 248 #define rename mingw_rename
 249
 250 #if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
 251 int mingw_getpagesize(void);
 252 #define getpagesize mingw_getpagesize
 253 #endif
 254
 255 struct rlimit {
 256         unsigned int rlim_cur;
 257 };
 258 #define RLIMIT_NOFILE 0
 259
 260 static inline int getrlimit(int resource, struct rlimit *rlp)
 261 {
 262         if (resource != RLIMIT_NOFILE) {
 263                 errno = EINVAL;
 264                 return -1;
 265         }
 266
 267         rlp->rlim_cur = 2048;
 268         return 0;
 269 }
 270
 271 /* Use mingw_lstat() instead of lstat()/stat() and
 272  * mingw_fstat() instead of fstat() on Windows.
 273  */
 274 #define off_t off64_t
 275 #define lseek _lseeki64
 276 #ifndef ALREADY_DECLARED_STAT_FUNCS
 277 #define stat _stati64
 278 int mingw_lstat(const char *file_name, struct stat *buf);
 279 int mingw_stat(const char *file_name, struct stat *buf);
 280 int mingw_fstat(int fd, struct stat *buf);
 281 #define fstat mingw_fstat
 282 #define lstat mingw_lstat
 283 #define _stati64(x,y) mingw_stat(x,y)
 284 #endif
 285
 286 int mingw_utime(const char *file_name, const struct utimbuf *times);
 287 #define utime mingw_utime
 288
 289 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
 290                      const char *dir,
 291                      int fhin, int fhout, int fherr);
 292 int mingw_execvp(const char *cmd, char *const *argv);
 293 #define execvp mingw_execvp
 294 int mingw_execv(const char *cmd, char *const *argv);
 295 #define execv mingw_execv
 296
 297 static inline unsigned int git_ntohl(unsigned int x)
 298 { return (unsigned int)ntohl(x); }
 299 #define ntohl git_ntohl
 300
 301 sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 302 #define signal mingw_signal
 303
 304 /*
 305  * ANSI emulation wrappers
 306  */
 307
 308 void winansi_init(void);
 309 HANDLE winansi_get_osfhandle(int fd);
 310
 311 /*
 312  * git specific compatibility
 313  */
 314
 315 #define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
 316 #define is_dir_sep(c) ((c) == '/' || (c) == '\\')
 317 static inline char *mingw_find_last_dir_sep(const char *path)
 318 {
 319         char *ret = NULL;
 320         for (; *path; ++path)
 321                 if (is_dir_sep(*path))
 322                         ret = (char *)path;
 323         return ret;
 324 }
 325 #define find_last_dir_sep mingw_find_last_dir_sep
 326 int mingw_offset_1st_component(const char *path);
 327 #define offset_1st_component mingw_offset_1st_component
 328 #define PATH_SEP ';'
 329 #define PRIuMAX "I64u"
 330
 331 void mingw_open_html(const char *path);
 332 #define open_html mingw_open_html
 333
 334 void mingw_mark_as_git_dir(const char *dir);
 335 #define mark_as_git_dir mingw_mark_as_git_dir
 336
 337
 338 /**
 339  * Converts UTF-8 encoded string to UTF-16LE.
 340  *
 341  * To support repositories with legacy-encoded file names, invalid UTF-8 bytes
 342  * 0xa0 - 0xff are converted to corresponding printable Unicode chars \u00a0 -
 343  * \u00ff, and invalid UTF-8 bytes 0x80 - 0x9f (which would make non-printable
 344  * Unicode) are converted to hex-code.
 345  *
 346  * Lead-bytes not followed by an appropriate number of trail-bytes, over-long
 347  * encodings and 4-byte encodings > \u10ffff are detected as invalid UTF-8.
 348  *
 349  * Maximum space requirement for the target buffer is two wide chars per UTF-8
 350  * char (((strlen(utf) * 2) + 1) [* sizeof(wchar_t)]).
 351  *
 352  * The maximum space is needed only if the entire input string consists of
 353  * invalid UTF-8 bytes in range 0x80-0x9f, as per the following table:
 354  *
 355  *               |                   | UTF-8 | UTF-16 |
 356  *   Code point  |  UTF-8 sequence   | bytes | words  | ratio
 357  * --------------+-------------------+-------+--------+-------
 358  * 000000-00007f | 0-7f              |   1   |   1    |  1
 359  * 000080-0007ff | c2-df + 80-bf     |   2   |   1    |  0.5
 360  * 000800-00ffff | e0-ef + 2 * 80-bf |   3   |   1    |  0.33
 361  * 010000-10ffff | f0-f4 + 3 * 80-bf |   4   |  2 (a) |  0.5
 362  * invalid       | 80-9f             |   1   |  2 (b) |  2
 363  * invalid       | a0-ff             |   1   |   1    |  1
 364  *
 365  * (a) encoded as UTF-16 surrogate pair
 366  * (b) encoded as two hex digits
 367  *
 368  * Note that, while the UTF-8 encoding scheme can be extended to 5-byte, 6-byte
 369  * or even indefinite-byte sequences, the largest valid code point \u10ffff
 370  * encodes as only 4 UTF-8 bytes.
 371  *
 372  * Parameters:
 373  * wcs: wide char target buffer
 374  * utf: string to convert
 375  * wcslen: size of target buffer (in wchar_t's)
 376  * utflen: size of string to convert, or -1 if 0-terminated
 377  *
 378  * Returns:
 379  * length of converted string (_wcslen(wcs)), or -1 on failure
 380  *
 381  * Errors:
 382  * EINVAL: one of the input parameters is invalid (e.g. NULL)
 383  * ERANGE: the output buffer is too small
 384  */
 385 int xutftowcsn(wchar_t *wcs, const char *utf, size_t wcslen, int utflen);
 386
 387 /**
 388  * Simplified variant of xutftowcsn, assumes input string is \0-terminated.
 389  */
 390 static inline int xutftowcs(wchar_t *wcs, const char *utf, size_t wcslen)
 391 {
 392         return xutftowcsn(wcs, utf, wcslen, -1);
 393 }
 394
 395 /**
 396  * Simplified file system specific variant of xutftowcsn, assumes output
 397  * buffer size is MAX_PATH wide chars and input string is \0-terminated,
 398  * fails with ENAMETOOLONG if input string is too long.
 399  */
 400 static inline int xutftowcs_path(wchar_t *wcs, const char *utf)
 401 {
 402         int result = xutftowcsn(wcs, utf, MAX_PATH, -1);
 403         if (result < 0 && errno == ERANGE)
 404                 errno = ENAMETOOLONG;
 405         return result;
 406 }
 407
 408 /**
 409  * Converts UTF-16LE encoded string to UTF-8.
 410  *
 411  * Maximum space requirement for the target buffer is three UTF-8 chars per
 412  * wide char ((_wcslen(wcs) * 3) + 1).
 413  *
 414  * The maximum space is needed only if the entire input string consists of
 415  * UTF-16 words in range 0x0800-0xd7ff or 0xe000-0xffff (i.e. \u0800-\uffff
 416  * modulo surrogate pairs), as per the following table:
 417  *
 418  *               |                       | UTF-16 | UTF-8 |
 419  *   Code point  |  UTF-16 sequence      | words  | bytes | ratio
 420  * --------------+-----------------------+--------+-------+-------
 421  * 000000-00007f | 0000-007f             |   1    |   1   |  1
 422  * 000080-0007ff | 0080-07ff             |   1    |   2   |  2
 423  * 000800-00ffff | 0800-d7ff / e000-ffff |   1    |   3   |  3
 424  * 010000-10ffff | d800-dbff + dc00-dfff |   2    |   4   |  2
 425  *
 426  * Note that invalid code points > 10ffff cannot be represented in UTF-16.
 427  *
 428  * Parameters:
 429  * utf: target buffer
 430  * wcs: wide string to convert
 431  * utflen: size of target buffer
 432  *
 433  * Returns:
 434  * length of converted string, or -1 on failure
 435  *
 436  * Errors:
 437  * EINVAL: one of the input parameters is invalid (e.g. NULL)
 438  * ERANGE: the output buffer is too small
 439  */
 440 int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen);
 441
 442 /*
 443  * A replacement of main() that adds win32 specific initialization.
 444  */
 445
 446 void mingw_startup();
 447 #define main(c,v) dummy_decl_mingw_main(); \
 448 static int mingw_main(); \
 449 int main(int argc, const char **argv) \
 450 { \
 451         mingw_startup(); \
 452         return mingw_main(__argc, __argv); \
 453 } \
 454 static int mingw_main(c,v)
 455
 456 /*
 457  * Used by Pthread API implementation for Windows
 458  */
 459 extern int err_win_to_posix(DWORD winerr);
 460
 461 extern const char *get_windows_home_directory();
 462 #define get_home_directory() get_windows_home_directory()