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
  26 #define S_ISUID 0004000
  27 #define S_ISGID 0002000
  28 #define S_ISVTX 0001000
  29
  30 #define WIFEXITED(x) 1
  31 #define WIFSIGNALED(x) 0
  32 #define WEXITSTATUS(x) ((x) & 0xff)
  33 #define WTERMSIG(x) SIGTERM
  34
  35 #define EWOULDBLOCK EAGAIN
  36 #define SHUT_WR SD_SEND
  37
  38 #define SIGHUP 1
  39 #define SIGQUIT 3
  40 #define SIGKILL 9
  41 #define SIGPIPE 13
  42 #define SIGALRM 14
  43 #define SIGCHLD 17
  44
  45 #define F_GETFD 1
  46 #define F_SETFD 2
  47 #define FD_CLOEXEC 0x1
  48
  49 #define EAFNOSUPPORT WSAEAFNOSUPPORT
  50 #define ECONNABORTED WSAECONNABORTED
  51
  52 struct passwd {
  53         char *pw_name;
  54         char *pw_gecos;
  55         char *pw_dir;
  56 };
  57
  58 typedef void (__cdecl *sig_handler_t)(int);
  59 struct sigaction {
  60         sig_handler_t sa_handler;
  61         unsigned sa_flags;
  62 };
  63 #define sigemptyset(x) (void)0
  64 #define SA_RESTART 0
  65
  66 struct itimerval {
  67         struct timeval it_value, it_interval;
  68 };
  69 #define ITIMER_REAL 0
  70
  71 /*
  72  * sanitize preprocessor namespace polluted by Windows headers defining
  73  * macros which collide with git local versions
  74  */
  75 #undef HELP_COMMAND /* from winuser.h */
  76
  77 /*
  78  * trivial stubs
  79  */
  80
  81 static inline int readlink(const char *path, char *buf, size_t bufsiz)
  82 { errno = ENOSYS; return -1; }
  83 static inline int symlink(const char *oldpath, const char *newpath)
  84 { errno = ENOSYS; return -1; }
  85 static inline int fchmod(int fildes, mode_t mode)
  86 { errno = ENOSYS; return -1; }
  87 static inline pid_t fork(void)
  88 { errno = ENOSYS; return -1; }
  89 static inline unsigned int alarm(unsigned int seconds)
  90 { return 0; }
  91 static inline int fsync(int fd)
  92 { return _commit(fd); }
  93 static inline pid_t getppid(void)
  94 { return 1; }
  95 static inline void sync(void)
  96 {}
  97 static inline uid_t getuid(void)
  98 { return 1; }
  99 static inline struct passwd *getpwnam(const char *name)
 100 { return NULL; }
 101 static inline int fcntl(int fd, int cmd, ...)
 102 {
 103         if (cmd == F_GETFD || cmd == F_SETFD)
 104                 return 0;
 105         errno = EINVAL;
 106         return -1;
 107 }
 108 /* bash cannot reliably detect negative return codes as failure */
 109 #define exit(code) exit((code) & 0xff)
 110
 111 /*
 112  * simple adaptors
 113  */
 114
 115 int mingw_mkdir(const char *path, int mode);
 116 #define mkdir mingw_mkdir
 117
 118 #define WNOHANG 1
 119 pid_t waitpid(pid_t pid, int *status, int options);
 120
 121 #define kill mingw_kill
 122 int mingw_kill(pid_t pid, int sig);
 123
 124 #ifndef NO_OPENSSL
 125 #include <openssl/ssl.h>
 126 static inline int mingw_SSL_set_fd(SSL *ssl, int fd)
 127 {
 128         return SSL_set_fd(ssl, _get_osfhandle(fd));
 129 }
 130 #define SSL_set_fd mingw_SSL_set_fd
 131
 132 static inline int mingw_SSL_set_rfd(SSL *ssl, int fd)
 133 {
 134         return SSL_set_rfd(ssl, _get_osfhandle(fd));
 135 }
 136 #define SSL_set_rfd mingw_SSL_set_rfd
 137
 138 static inline int mingw_SSL_set_wfd(SSL *ssl, int fd)
 139 {
 140         return SSL_set_wfd(ssl, _get_osfhandle(fd));
 141 }
 142 #define SSL_set_wfd mingw_SSL_set_wfd
 143 #endif
 144
 145 /*
 146  * implementations of missing functions
 147  */
 148
 149 int pipe(int filedes[2]);
 150 unsigned int sleep (unsigned int seconds);
 151 int mkstemp(char *template);
 152 int gettimeofday(struct timeval *tv, void *tz);
 153 struct tm *gmtime_r(const time_t *timep, struct tm *result);
 154 struct tm *localtime_r(const time_t *timep, struct tm *result);
 155 int getpagesize(void);  /* defined in MinGW's libgcc.a */
 156 struct passwd *getpwuid(uid_t uid);
 157 int setitimer(int type, struct itimerval *in, struct itimerval *out);
 158 int sigaction(int sig, struct sigaction *in, struct sigaction *out);
 159 int link(const char *oldpath, const char *newpath);
 160
 161 /*
 162  * replacements of existing functions
 163  */
 164
 165 int mingw_unlink(const char *pathname);
 166 #define unlink mingw_unlink
 167
 168 int mingw_rmdir(const char *path);
 169 #define rmdir mingw_rmdir
 170
 171 int mingw_open (const char *filename, int oflags, ...);
 172 #define open mingw_open
 173
 174 ssize_t mingw_write(int fd, const void *buf, size_t count);
 175 #define write mingw_write
 176
 177 int mingw_fgetc(FILE *stream);
 178 #define fgetc mingw_fgetc
 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_fflush(FILE *stream);
 187 #define fflush mingw_fflush
 188
 189 int mingw_access(const char *filename, int mode);
 190 #undef access
 191 #define access mingw_access
 192
 193 int mingw_chdir(const char *dirname);
 194 #define chdir mingw_chdir
 195
 196 int mingw_chmod(const char *filename, int mode);
 197 #define chmod mingw_chmod
 198
 199 char *mingw_mktemp(char *template);
 200 #define mktemp mingw_mktemp
 201
 202 char *mingw_getcwd(char *pointer, int len);
 203 #define getcwd mingw_getcwd
 204
 205 char *mingw_getenv(const char *name);
 206 #define getenv mingw_getenv
 207 int mingw_putenv(const char *namevalue);
 208 #define putenv mingw_putenv
 209 #define unsetenv mingw_putenv
 210
 211 int mingw_gethostname(char *host, int namelen);
 212 #define gethostname mingw_gethostname
 213
 214 struct hostent *mingw_gethostbyname(const char *host);
 215 #define gethostbyname mingw_gethostbyname
 216
 217 void mingw_freeaddrinfo(struct addrinfo *res);
 218 #define freeaddrinfo mingw_freeaddrinfo
 219
 220 int mingw_getaddrinfo(const char *node, const char *service,
 221                       const struct addrinfo *hints, struct addrinfo **res);
 222 #define getaddrinfo mingw_getaddrinfo
 223
 224 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
 225                       char *host, DWORD hostlen, char *serv, DWORD servlen,
 226                       int flags);
 227 #define getnameinfo mingw_getnameinfo
 228
 229 int mingw_socket(int domain, int type, int protocol);
 230 #define socket mingw_socket
 231
 232 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 233 #define connect mingw_connect
 234
 235 int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz);
 236 #define bind mingw_bind
 237
 238 int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen);
 239 #define setsockopt mingw_setsockopt
 240
 241 int mingw_shutdown(int sockfd, int how);
 242 #define shutdown mingw_shutdown
 243
 244 int mingw_listen(int sockfd, int backlog);
 245 #define listen mingw_listen
 246
 247 int mingw_accept(int sockfd, struct sockaddr *sa, socklen_t *sz);
 248 #define accept mingw_accept
 249
 250 int mingw_rename(const char*, const char*);
 251 #define rename mingw_rename
 252
 253 #if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
 254 int mingw_getpagesize(void);
 255 #define getpagesize mingw_getpagesize
 256 #endif
 257
 258 struct rlimit {
 259         unsigned int rlim_cur;
 260 };
 261 #define RLIMIT_NOFILE 0
 262
 263 static inline int getrlimit(int resource, struct rlimit *rlp)
 264 {
 265         if (resource != RLIMIT_NOFILE) {
 266                 errno = EINVAL;
 267                 return -1;
 268         }
 269
 270         rlp->rlim_cur = 2048;
 271         return 0;
 272 }
 273
 274 /* Use mingw_lstat() instead of lstat()/stat() and
 275  * mingw_fstat() instead of fstat() on Windows.
 276  */
 277 #define off_t off64_t
 278 #define lseek _lseeki64
 279 #ifndef ALREADY_DECLARED_STAT_FUNCS
 280 #define stat _stati64
 281 int mingw_lstat(const char *file_name, struct stat *buf);
 282 int mingw_stat(const char *file_name, struct stat *buf);
 283 int mingw_fstat(int fd, struct stat *buf);
 284 #define fstat mingw_fstat
 285 #define lstat mingw_lstat
 286 #define _stati64(x,y) mingw_stat(x,y)
 287 #endif
 288
 289 int mingw_utime(const char *file_name, const struct utimbuf *times);
 290 #define utime mingw_utime
 291
 292 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
 293                      const char *dir,
 294                      int fhin, int fhout, int fherr);
 295 int mingw_execvp(const char *cmd, char *const *argv);
 296 #define execvp mingw_execvp
 297 int mingw_execv(const char *cmd, char *const *argv);
 298 #define execv mingw_execv
 299
 300 static inline unsigned int git_ntohl(unsigned int x)
 301 { return (unsigned int)ntohl(x); }
 302 #define ntohl git_ntohl
 303
 304 sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 305 #define signal mingw_signal
 306
 307 int mingw_raise(int sig);
 308 #define raise mingw_raise
 309
 310 /*
 311  * ANSI emulation wrappers
 312  */
 313
 314 void winansi_init(void);
 315 HANDLE winansi_get_osfhandle(int fd);
 316
 317 /*
 318  * git specific compatibility
 319  */
 320
 321 #define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
 322 #define is_dir_sep(c) ((c) == '/' || (c) == '\\')
 323 static inline char *mingw_find_last_dir_sep(const char *path)
 324 {
 325         char *ret = NULL;
 326         for (; *path; ++path)
 327                 if (is_dir_sep(*path))
 328                         ret = (char *)path;
 329         return ret;
 330 }
 331 #define find_last_dir_sep mingw_find_last_dir_sep
 332 int mingw_offset_1st_component(const char *path);
 333 #define offset_1st_component mingw_offset_1st_component
 334 #define PATH_SEP ';'
 335 #define PRIuMAX "I64u"
 336
 337 void mingw_open_html(const char *path);
 338 #define open_html mingw_open_html
 339
 340 void mingw_mark_as_git_dir(const char *dir);
 341 #define mark_as_git_dir mingw_mark_as_git_dir
 342
 343
 344 /**
 345  * Converts UTF-8 encoded string to UTF-16LE.
 346  *
 347  * To support repositories with legacy-encoded file names, invalid UTF-8 bytes
 348  * 0xa0 - 0xff are converted to corresponding printable Unicode chars \u00a0 -
 349  * \u00ff, and invalid UTF-8 bytes 0x80 - 0x9f (which would make non-printable
 350  * Unicode) are converted to hex-code.
 351  *
 352  * Lead-bytes not followed by an appropriate number of trail-bytes, over-long
 353  * encodings and 4-byte encodings > \u10ffff are detected as invalid UTF-8.
 354  *
 355  * Maximum space requirement for the target buffer is two wide chars per UTF-8
 356  * char (((strlen(utf) * 2) + 1) [* sizeof(wchar_t)]).
 357  *
 358  * The maximum space is needed only if the entire input string consists of
 359  * invalid UTF-8 bytes in range 0x80-0x9f, as per the following table:
 360  *
 361  *               |                   | UTF-8 | UTF-16 |
 362  *   Code point  |  UTF-8 sequence   | bytes | words  | ratio
 363  * --------------+-------------------+-------+--------+-------
 364  * 000000-00007f | 0-7f              |   1   |   1    |  1
 365  * 000080-0007ff | c2-df + 80-bf     |   2   |   1    |  0.5
 366  * 000800-00ffff | e0-ef + 2 * 80-bf |   3   |   1    |  0.33
 367  * 010000-10ffff | f0-f4 + 3 * 80-bf |   4   |  2 (a) |  0.5
 368  * invalid       | 80-9f             |   1   |  2 (b) |  2
 369  * invalid       | a0-ff             |   1   |   1    |  1
 370  *
 371  * (a) encoded as UTF-16 surrogate pair
 372  * (b) encoded as two hex digits
 373  *
 374  * Note that, while the UTF-8 encoding scheme can be extended to 5-byte, 6-byte
 375  * or even indefinite-byte sequences, the largest valid code point \u10ffff
 376  * encodes as only 4 UTF-8 bytes.
 377  *
 378  * Parameters:
 379  * wcs: wide char target buffer
 380  * utf: string to convert
 381  * wcslen: size of target buffer (in wchar_t's)
 382  * utflen: size of string to convert, or -1 if 0-terminated
 383  *
 384  * Returns:
 385  * length of converted string (_wcslen(wcs)), or -1 on failure
 386  *
 387  * Errors:
 388  * EINVAL: one of the input parameters is invalid (e.g. NULL)
 389  * ERANGE: the output buffer is too small
 390  */
 391 int xutftowcsn(wchar_t *wcs, const char *utf, size_t wcslen, int utflen);
 392
 393 /**
 394  * Simplified variant of xutftowcsn, assumes input string is \0-terminated.
 395  */
 396 static inline int xutftowcs(wchar_t *wcs, const char *utf, size_t wcslen)
 397 {
 398         return xutftowcsn(wcs, utf, wcslen, -1);
 399 }
 400
 401 /**
 402  * Simplified file system specific variant of xutftowcsn, assumes output
 403  * buffer size is MAX_PATH wide chars and input string is \0-terminated,
 404  * fails with ENAMETOOLONG if input string is too long.
 405  */
 406 static inline int xutftowcs_path(wchar_t *wcs, const char *utf)
 407 {
 408         int result = xutftowcsn(wcs, utf, MAX_PATH, -1);
 409         if (result < 0 && errno == ERANGE)
 410                 errno = ENAMETOOLONG;
 411         return result;
 412 }
 413
 414 /**
 415  * Converts UTF-16LE encoded string to UTF-8.
 416  *
 417  * Maximum space requirement for the target buffer is three UTF-8 chars per
 418  * wide char ((_wcslen(wcs) * 3) + 1).
 419  *
 420  * The maximum space is needed only if the entire input string consists of
 421  * UTF-16 words in range 0x0800-0xd7ff or 0xe000-0xffff (i.e. \u0800-\uffff
 422  * modulo surrogate pairs), as per the following table:
 423  *
 424  *               |                       | UTF-16 | UTF-8 |
 425  *   Code point  |  UTF-16 sequence      | words  | bytes | ratio
 426  * --------------+-----------------------+--------+-------+-------
 427  * 000000-00007f | 0000-007f             |   1    |   1   |  1
 428  * 000080-0007ff | 0080-07ff             |   1    |   2   |  2
 429  * 000800-00ffff | 0800-d7ff / e000-ffff |   1    |   3   |  3
 430  * 010000-10ffff | d800-dbff + dc00-dfff |   2    |   4   |  2
 431  *
 432  * Note that invalid code points > 10ffff cannot be represented in UTF-16.
 433  *
 434  * Parameters:
 435  * utf: target buffer
 436  * wcs: wide string to convert
 437  * utflen: size of target buffer
 438  *
 439  * Returns:
 440  * length of converted string, or -1 on failure
 441  *
 442  * Errors:
 443  * EINVAL: one of the input parameters is invalid (e.g. NULL)
 444  * ERANGE: the output buffer is too small
 445  */
 446 int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen);
 447
 448 /*
 449  * A replacement of main() that adds win32 specific initialization.
 450  */
 451
 452 void mingw_startup();
 453 #define main(c,v) dummy_decl_mingw_main(); \
 454 static int mingw_main(); \
 455 int main(int argc, const char **argv) \
 456 { \
 457         mingw_startup(); \
 458         return mingw_main(__argc, __argv); \
 459 } \
 460 static int mingw_main(c,v)
 461
 462 /*
 463  * Used by Pthread API implementation for Windows
 464  */
 465 extern int err_win_to_posix(DWORD winerr);
 466
 467 extern const char *get_windows_home_directory();
 468 #define get_home_directory() get_windows_home_directory()