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
 205 int mingw_gethostname(char *host, int namelen);
 206 #define gethostname mingw_gethostname
 207
 208 struct hostent *mingw_gethostbyname(const char *host);
 209 #define gethostbyname mingw_gethostbyname
 210
 211 void mingw_freeaddrinfo(struct addrinfo *res);
 212 #define freeaddrinfo mingw_freeaddrinfo
 213
 214 int mingw_getaddrinfo(const char *node, const char *service,
 215                       const struct addrinfo *hints, struct addrinfo **res);
 216 #define getaddrinfo mingw_getaddrinfo
 217
 218 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
 219                       char *host, DWORD hostlen, char *serv, DWORD servlen,
 220                       int flags);
 221 #define getnameinfo mingw_getnameinfo
 222
 223 int mingw_socket(int domain, int type, int protocol);
 224 #define socket mingw_socket
 225
 226 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 227 #define connect mingw_connect
 228
 229 int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz);
 230 #define bind mingw_bind
 231
 232 int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen);
 233 #define setsockopt mingw_setsockopt
 234
 235 int mingw_shutdown(int sockfd, int how);
 236 #define shutdown mingw_shutdown
 237
 238 int mingw_listen(int sockfd, int backlog);
 239 #define listen mingw_listen
 240
 241 int mingw_accept(int sockfd, struct sockaddr *sa, socklen_t *sz);
 242 #define accept mingw_accept
 243
 244 int mingw_rename(const char*, const char*);
 245 #define rename mingw_rename
 246
 247 #if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
 248 int mingw_getpagesize(void);
 249 #define getpagesize mingw_getpagesize
 250 #endif
 251
 252 struct rlimit {
 253         unsigned int rlim_cur;
 254 };
 255 #define RLIMIT_NOFILE 0
 256
 257 static inline int getrlimit(int resource, struct rlimit *rlp)
 258 {
 259         if (resource != RLIMIT_NOFILE) {
 260                 errno = EINVAL;
 261                 return -1;
 262         }
 263
 264         rlp->rlim_cur = 2048;
 265         return 0;
 266 }
 267
 268 /* Use mingw_lstat() instead of lstat()/stat() and
 269  * mingw_fstat() instead of fstat() on Windows.
 270  */
 271 #define off_t off64_t
 272 #define lseek _lseeki64
 273 #ifndef ALREADY_DECLARED_STAT_FUNCS
 274 #define stat _stati64
 275 int mingw_lstat(const char *file_name, struct stat *buf);
 276 int mingw_stat(const char *file_name, struct stat *buf);
 277 int mingw_fstat(int fd, struct stat *buf);
 278 #define fstat mingw_fstat
 279 #define lstat mingw_lstat
 280 #define _stati64(x,y) mingw_stat(x,y)
 281 #endif
 282
 283 int mingw_utime(const char *file_name, const struct utimbuf *times);
 284 #define utime mingw_utime
 285
 286 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
 287                      const char *dir,
 288                      int fhin, int fhout, int fherr);
 289 int mingw_execvp(const char *cmd, char *const *argv);
 290 #define execvp mingw_execvp
 291 int mingw_execv(const char *cmd, char *const *argv);
 292 #define execv mingw_execv
 293
 294 static inline unsigned int git_ntohl(unsigned int x)
 295 { return (unsigned int)ntohl(x); }
 296 #define ntohl git_ntohl
 297
 298 sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 299 #define signal mingw_signal
 300
 301 /*
 302  * ANSI emulation wrappers
 303  */
 304
 305 void winansi_init(void);
 306 int winansi_isatty(int fd);
 307 HANDLE winansi_get_osfhandle(int fd);
 308 #define isatty winansi_isatty
 309
 310 /*
 311  * git specific compatibility
 312  */
 313
 314 #define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
 315 #define is_dir_sep(c) ((c) == '/' || (c) == '\\')
 316 static inline char *mingw_find_last_dir_sep(const char *path)
 317 {
 318         char *ret = NULL;
 319         for (; *path; ++path)
 320                 if (is_dir_sep(*path))
 321                         ret = (char *)path;
 322         return ret;
 323 }
 324 #define find_last_dir_sep mingw_find_last_dir_sep
 325 int mingw_offset_1st_component(const char *path);
 326 #define offset_1st_component mingw_offset_1st_component
 327 #define PATH_SEP ';'
 328 #define PRIuMAX "I64u"
 329
 330 void mingw_open_html(const char *path);
 331 #define open_html mingw_open_html
 332
 333 void mingw_mark_as_git_dir(const char *dir);
 334 #define mark_as_git_dir mingw_mark_as_git_dir
 335
 336 /*
 337  * helpers
 338  */
 339
 340 char **make_augmented_environ(const char *const *vars);
 341 void free_environ(char **env);
 342
 343 /**
 344  * Converts UTF-8 encoded string to UTF-16LE.
 345  *
 346  * To support repositories with legacy-encoded file names, invalid UTF-8 bytes
 347  * 0xa0 - 0xff are converted to corresponding printable Unicode chars \u00a0 -
 348  * \u00ff, and invalid UTF-8 bytes 0x80 - 0x9f (which would make non-printable
 349  * Unicode) are converted to hex-code.
 350  *
 351  * Lead-bytes not followed by an appropriate number of trail-bytes, over-long
 352  * encodings and 4-byte encodings > \u10ffff are detected as invalid UTF-8.
 353  *
 354  * Maximum space requirement for the target buffer is two wide chars per UTF-8
 355  * char (((strlen(utf) * 2) + 1) [* sizeof(wchar_t)]).
 356  *
 357  * The maximum space is needed only if the entire input string consists of
 358  * invalid UTF-8 bytes in range 0x80-0x9f, as per the following table:
 359  *
 360  *               |                   | UTF-8 | UTF-16 |
 361  *   Code point  |  UTF-8 sequence   | bytes | words  | ratio
 362  * --------------+-------------------+-------+--------+-------
 363  * 000000-00007f | 0-7f              |   1   |   1    |  1
 364  * 000080-0007ff | c2-df + 80-bf     |   2   |   1    |  0.5
 365  * 000800-00ffff | e0-ef + 2 * 80-bf |   3   |   1    |  0.33
 366  * 010000-10ffff | f0-f4 + 3 * 80-bf |   4   |  2 (a) |  0.5
 367  * invalid       | 80-9f             |   1   |  2 (b) |  2
 368  * invalid       | a0-ff             |   1   |   1    |  1
 369  *
 370  * (a) encoded as UTF-16 surrogate pair
 371  * (b) encoded as two hex digits
 372  *
 373  * Note that, while the UTF-8 encoding scheme can be extended to 5-byte, 6-byte
 374  * or even indefinite-byte sequences, the largest valid code point \u10ffff
 375  * encodes as only 4 UTF-8 bytes.
 376  *
 377  * Parameters:
 378  * wcs: wide char target buffer
 379  * utf: string to convert
 380  * wcslen: size of target buffer (in wchar_t's)
 381  * utflen: size of string to convert, or -1 if 0-terminated
 382  *
 383  * Returns:
 384  * length of converted string (_wcslen(wcs)), or -1 on failure
 385  *
 386  * Errors:
 387  * EINVAL: one of the input parameters is invalid (e.g. NULL)
 388  * ERANGE: the output buffer is too small
 389  */
 390 int xutftowcsn(wchar_t *wcs, const char *utf, size_t wcslen, int utflen);
 391
 392 /**
 393  * Simplified variant of xutftowcsn, assumes input string is \0-terminated.
 394  */
 395 static inline int xutftowcs(wchar_t *wcs, const char *utf, size_t wcslen)
 396 {
 397         return xutftowcsn(wcs, utf, wcslen, -1);
 398 }
 399
 400 /**
 401  * Simplified file system specific variant of xutftowcsn, assumes output
 402  * buffer size is MAX_PATH wide chars and input string is \0-terminated,
 403  * fails with ENAMETOOLONG if input string is too long.
 404  */
 405 static inline int xutftowcs_path(wchar_t *wcs, const char *utf)
 406 {
 407         int result = xutftowcsn(wcs, utf, MAX_PATH, -1);
 408         if (result < 0 && errno == ERANGE)
 409                 errno = ENAMETOOLONG;
 410         return result;
 411 }
 412
 413 /**
 414  * Converts UTF-16LE encoded string to UTF-8.
 415  *
 416  * Maximum space requirement for the target buffer is three UTF-8 chars per
 417  * wide char ((_wcslen(wcs) * 3) + 1).
 418  *
 419  * The maximum space is needed only if the entire input string consists of
 420  * UTF-16 words in range 0x0800-0xd7ff or 0xe000-0xffff (i.e. \u0800-\uffff
 421  * modulo surrogate pairs), as per the following table:
 422  *
 423  *               |                       | UTF-16 | UTF-8 |
 424  *   Code point  |  UTF-16 sequence      | words  | bytes | ratio
 425  * --------------+-----------------------+--------+-------+-------
 426  * 000000-00007f | 0000-007f             |   1    |   1   |  1
 427  * 000080-0007ff | 0080-07ff             |   1    |   2   |  2
 428  * 000800-00ffff | 0800-d7ff / e000-ffff |   1    |   3   |  3
 429  * 010000-10ffff | d800-dbff + dc00-dfff |   2    |   4   |  2
 430  *
 431  * Note that invalid code points > 10ffff cannot be represented in UTF-16.
 432  *
 433  * Parameters:
 434  * utf: target buffer
 435  * wcs: wide string to convert
 436  * utflen: size of target buffer
 437  *
 438  * Returns:
 439  * length of converted string, or -1 on failure
 440  *
 441  * Errors:
 442  * EINVAL: one of the input parameters is invalid (e.g. NULL)
 443  * ERANGE: the output buffer is too small
 444  */
 445 int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen);
 446
 447 /*
 448  * A replacement of main() that adds win32 specific initialization.
 449  */
 450
 451 void mingw_startup();
 452 #define main(c,v) dummy_decl_mingw_main(); \
 453 static int mingw_main(); \
 454 int main(int argc, const char **argv) \
 455 { \
 456         mingw_startup(); \
 457         return mingw_main(__argc, __argv); \
 458 } \
 459 static int mingw_main(c,v)
 460
 461 /*
 462  * Used by Pthread API implementation for Windows
 463  */
 464 extern int err_win_to_posix(DWORD winerr);
 465
 466 extern const char *get_windows_home_directory();
 467 #define get_home_directory() get_windows_home_directory()