Andrew's git - gitweb.git/blob

   1#include <winsock2.h>
   2#include <ws2tcpip.h>
   3
   4/*
   5 * things that are not available in header files
   6 */
   7
   8typedef int pid_t;
   9typedef int uid_t;
  10typedef 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#ifndef EWOULDBLOCK
  36#define EWOULDBLOCK EAGAIN
  37#endif
  38#ifndef ELOOP
  39#define ELOOP EMLINK
  40#endif
  41#define SHUT_WR SD_SEND
  42
  43#define SIGHUP 1
  44#define SIGQUIT 3
  45#define SIGKILL 9
  46#define SIGPIPE 13
  47#define SIGALRM 14
  48#define SIGCHLD 17
  49
  50#define F_GETFD 1
  51#define F_SETFD 2
  52#define FD_CLOEXEC 0x1
  53
  54#ifndef EAFNOSUPPORT
  55#define EAFNOSUPPORT WSAEAFNOSUPPORT
  56#endif
  57#ifndef ECONNABORTED
  58#define ECONNABORTED WSAECONNABORTED
  59#endif
  60
  61struct passwd {
  62        char *pw_name;
  63        char *pw_gecos;
  64        char *pw_dir;
  65};
  66
  67typedef void (__cdecl *sig_handler_t)(int);
  68struct sigaction {
  69        sig_handler_t sa_handler;
  70        unsigned sa_flags;
  71};
  72#define sigemptyset(x) (void)0
  73#define SA_RESTART 0
  74
  75struct itimerval {
  76        struct timeval it_value, it_interval;
  77};
  78#define ITIMER_REAL 0
  79
  80/*
  81 * sanitize preprocessor namespace polluted by Windows headers defining
  82 * macros which collide with git local versions
  83 */
  84#undef HELP_COMMAND /* from winuser.h */
  85
  86/*
  87 * trivial stubs
  88 */
  89
  90static inline int readlink(const char *path, char *buf, size_t bufsiz)
  91{ errno = ENOSYS; return -1; }
  92static inline int symlink(const char *oldpath, const char *newpath)
  93{ errno = ENOSYS; return -1; }
  94static inline int fchmod(int fildes, mode_t mode)
  95{ errno = ENOSYS; return -1; }
  96static inline pid_t fork(void)
  97{ errno = ENOSYS; return -1; }
  98static inline unsigned int alarm(unsigned int seconds)
  99{ return 0; }
 100static inline int fsync(int fd)
 101{ return _commit(fd); }
 102static inline pid_t getppid(void)
 103{ return 1; }
 104static inline void sync(void)
 105{}
 106static inline uid_t getuid(void)
 107{ return 1; }
 108static inline struct passwd *getpwnam(const char *name)
 109{ return NULL; }
 110static inline int fcntl(int fd, int cmd, ...)
 111{
 112        if (cmd == F_GETFD || cmd == F_SETFD)
 113                return 0;
 114        errno = EINVAL;
 115        return -1;
 116}
 117/* bash cannot reliably detect negative return codes as failure */
 118#define exit(code) exit((code) & 0xff)
 119
 120/*
 121 * simple adaptors
 122 */
 123
 124static inline int mingw_mkdir(const char *path, int mode)
 125{
 126        return mkdir(path);
 127}
 128#define mkdir mingw_mkdir
 129
 130#define WNOHANG 1
 131pid_t waitpid(pid_t pid, int *status, int options);
 132
 133#define kill mingw_kill
 134int mingw_kill(pid_t pid, int sig);
 135
 136#ifndef NO_OPENSSL
 137#include <openssl/ssl.h>
 138static 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
 144static 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
 150static 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
 161int pipe(int filedes[2]);
 162unsigned int sleep (unsigned int seconds);
 163int mkstemp(char *template);
 164int gettimeofday(struct timeval *tv, void *tz);
 165struct tm *gmtime_r(const time_t *timep, struct tm *result);
 166struct tm *localtime_r(const time_t *timep, struct tm *result);
 167int getpagesize(void);  /* defined in MinGW's libgcc.a */
 168struct passwd *getpwuid(uid_t uid);
 169int setitimer(int type, struct itimerval *in, struct itimerval *out);
 170int sigaction(int sig, struct sigaction *in, struct sigaction *out);
 171int link(const char *oldpath, const char *newpath);
 172
 173/*
 174 * replacements of existing functions
 175 */
 176
 177int mingw_unlink(const char *pathname);
 178#define unlink mingw_unlink
 179
 180int mingw_rmdir(const char *path);
 181#define rmdir mingw_rmdir
 182
 183int mingw_open (const char *filename, int oflags, ...);
 184#define open mingw_open
 185
 186int mingw_fgetc(FILE *stream);
 187#define fgetc mingw_fgetc
 188
 189FILE *mingw_fopen (const char *filename, const char *otype);
 190#define fopen mingw_fopen
 191
 192FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream);
 193#define freopen mingw_freopen
 194
 195int mingw_fflush(FILE *stream);
 196#define fflush mingw_fflush
 197
 198char *mingw_getcwd(char *pointer, int len);
 199#define getcwd mingw_getcwd
 200
 201char *mingw_getenv(const char *name);
 202#define getenv mingw_getenv
 203
 204int mingw_gethostname(char *host, int namelen);
 205#define gethostname mingw_gethostname
 206
 207struct hostent *mingw_gethostbyname(const char *host);
 208#define gethostbyname mingw_gethostbyname
 209
 210void mingw_freeaddrinfo(struct addrinfo *res);
 211#define freeaddrinfo mingw_freeaddrinfo
 212
 213int mingw_getaddrinfo(const char *node, const char *service,
 214                      const struct addrinfo *hints, struct addrinfo **res);
 215#define getaddrinfo mingw_getaddrinfo
 216
 217int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
 218                      char *host, DWORD hostlen, char *serv, DWORD servlen,
 219                      int flags);
 220#define getnameinfo mingw_getnameinfo
 221
 222int mingw_socket(int domain, int type, int protocol);
 223#define socket mingw_socket
 224
 225int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 226#define connect mingw_connect
 227
 228int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz);
 229#define bind mingw_bind
 230
 231int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen);
 232#define setsockopt mingw_setsockopt
 233
 234int mingw_shutdown(int sockfd, int how);
 235#define shutdown mingw_shutdown
 236
 237int mingw_listen(int sockfd, int backlog);
 238#define listen mingw_listen
 239
 240int mingw_accept(int sockfd, struct sockaddr *sa, socklen_t *sz);
 241#define accept mingw_accept
 242
 243int mingw_rename(const char*, const char*);
 244#define rename mingw_rename
 245
 246#if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
 247int mingw_getpagesize(void);
 248#define getpagesize mingw_getpagesize
 249#endif
 250
 251struct rlimit {
 252        unsigned int rlim_cur;
 253};
 254#define RLIMIT_NOFILE 0
 255
 256static inline int getrlimit(int resource, struct rlimit *rlp)
 257{
 258        if (resource != RLIMIT_NOFILE) {
 259                errno = EINVAL;
 260                return -1;
 261        }
 262
 263        rlp->rlim_cur = 2048;
 264        return 0;
 265}
 266
 267/*
 268 * Use mingw specific stat()/lstat()/fstat() implementations on Windows.
 269 */
 270#define off_t off64_t
 271#define lseek _lseeki64
 272
 273/* use struct stat with 64 bit st_size */
 274#ifdef stat
 275#undef stat
 276#endif
 277#define stat _stati64
 278int mingw_lstat(const char *file_name, struct stat *buf);
 279int mingw_stat(const char *file_name, struct stat *buf);
 280int mingw_fstat(int fd, struct stat *buf);
 281#ifdef fstat
 282#undef fstat
 283#endif
 284#define fstat mingw_fstat
 285#ifdef lstat
 286#undef lstat
 287#endif
 288#define lstat mingw_lstat
 289
 290#ifndef _stati64
 291# define _stati64(x,y) mingw_stat(x,y)
 292#elif defined (_USE_32BIT_TIME_T)
 293# define _stat32i64(x,y) mingw_stat(x,y)
 294#else
 295# define _stat64(x,y) mingw_stat(x,y)
 296#endif
 297
 298int mingw_utime(const char *file_name, const struct utimbuf *times);
 299#define utime mingw_utime
 300
 301pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
 302                     const char *dir,
 303                     int fhin, int fhout, int fherr);
 304int mingw_execvp(const char *cmd, char *const *argv);
 305#define execvp mingw_execvp
 306int mingw_execv(const char *cmd, char *const *argv);
 307#define execv mingw_execv
 308
 309static inline unsigned int git_ntohl(unsigned int x)
 310{ return (unsigned int)ntohl(x); }
 311#define ntohl git_ntohl
 312
 313sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 314#define signal mingw_signal
 315
 316int mingw_raise(int sig);
 317#define raise mingw_raise
 318
 319/*
 320 * ANSI emulation wrappers
 321 */
 322
 323void winansi_init(void);
 324HANDLE winansi_get_osfhandle(int fd);
 325
 326/*
 327 * git specific compatibility
 328 */
 329
 330#define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
 331#define is_dir_sep(c) ((c) == '/' || (c) == '\\')
 332static inline char *mingw_find_last_dir_sep(const char *path)
 333{
 334        char *ret = NULL;
 335        for (; *path; ++path)
 336                if (is_dir_sep(*path))
 337                        ret = (char *)path;
 338        return ret;
 339}
 340#define find_last_dir_sep mingw_find_last_dir_sep
 341int mingw_offset_1st_component(const char *path);
 342#define offset_1st_component mingw_offset_1st_component
 343#define PATH_SEP ';'
 344#define PRIuMAX "I64u"
 345#define PRId64 "I64d"
 346
 347void mingw_open_html(const char *path);
 348#define open_html mingw_open_html
 349
 350/*
 351 * helpers
 352 */
 353
 354char **make_augmented_environ(const char *const *vars);
 355void free_environ(char **env);
 356
 357/**
 358 * Converts UTF-8 encoded string to UTF-16LE.
 359 *
 360 * To support repositories with legacy-encoded file names, invalid UTF-8 bytes
 361 * 0xa0 - 0xff are converted to corresponding printable Unicode chars \u00a0 -
 362 * \u00ff, and invalid UTF-8 bytes 0x80 - 0x9f (which would make non-printable
 363 * Unicode) are converted to hex-code.
 364 *
 365 * Lead-bytes not followed by an appropriate number of trail-bytes, over-long
 366 * encodings and 4-byte encodings > \u10ffff are detected as invalid UTF-8.
 367 *
 368 * Maximum space requirement for the target buffer is two wide chars per UTF-8
 369 * char (((strlen(utf) * 2) + 1) [* sizeof(wchar_t)]).
 370 *
 371 * The maximum space is needed only if the entire input string consists of
 372 * invalid UTF-8 bytes in range 0x80-0x9f, as per the following table:
 373 *
 374 *               |                   | UTF-8 | UTF-16 |
 375 *   Code point  |  UTF-8 sequence   | bytes | words  | ratio
 376 * --------------+-------------------+-------+--------+-------
 377 * 000000-00007f | 0-7f              |   1   |   1    |  1
 378 * 000080-0007ff | c2-df + 80-bf     |   2   |   1    |  0.5
 379 * 000800-00ffff | e0-ef + 2 * 80-bf |   3   |   1    |  0.33
 380 * 010000-10ffff | f0-f4 + 3 * 80-bf |   4   |  2 (a) |  0.5
 381 * invalid       | 80-9f             |   1   |  2 (b) |  2
 382 * invalid       | a0-ff             |   1   |   1    |  1
 383 *
 384 * (a) encoded as UTF-16 surrogate pair
 385 * (b) encoded as two hex digits
 386 *
 387 * Note that, while the UTF-8 encoding scheme can be extended to 5-byte, 6-byte
 388 * or even indefinite-byte sequences, the largest valid code point \u10ffff
 389 * encodes as only 4 UTF-8 bytes.
 390 *
 391 * Parameters:
 392 * wcs: wide char target buffer
 393 * utf: string to convert
 394 * wcslen: size of target buffer (in wchar_t's)
 395 * utflen: size of string to convert, or -1 if 0-terminated
 396 *
 397 * Returns:
 398 * length of converted string (_wcslen(wcs)), or -1 on failure
 399 *
 400 * Errors:
 401 * EINVAL: one of the input parameters is invalid (e.g. NULL)
 402 * ERANGE: the output buffer is too small
 403 */
 404int xutftowcsn(wchar_t *wcs, const char *utf, size_t wcslen, int utflen);
 405
 406/**
 407 * Simplified variant of xutftowcsn, assumes input string is \0-terminated.
 408 */
 409static inline int xutftowcs(wchar_t *wcs, const char *utf, size_t wcslen)
 410{
 411        return xutftowcsn(wcs, utf, wcslen, -1);
 412}
 413
 414/**
 415 * Simplified file system specific variant of xutftowcsn, assumes output
 416 * buffer size is MAX_PATH wide chars and input string is \0-terminated,
 417 * fails with ENAMETOOLONG if input string is too long.
 418 */
 419static inline int xutftowcs_path(wchar_t *wcs, const char *utf)
 420{
 421        int result = xutftowcsn(wcs, utf, MAX_PATH, -1);
 422        if (result < 0 && errno == ERANGE)
 423                errno = ENAMETOOLONG;
 424        return result;
 425}
 426
 427/**
 428 * Converts UTF-16LE encoded string to UTF-8.
 429 *
 430 * Maximum space requirement for the target buffer is three UTF-8 chars per
 431 * wide char ((_wcslen(wcs) * 3) + 1).
 432 *
 433 * The maximum space is needed only if the entire input string consists of
 434 * UTF-16 words in range 0x0800-0xd7ff or 0xe000-0xffff (i.e. \u0800-\uffff
 435 * modulo surrogate pairs), as per the following table:
 436 *
 437 *               |                       | UTF-16 | UTF-8 |
 438 *   Code point  |  UTF-16 sequence      | words  | bytes | ratio
 439 * --------------+-----------------------+--------+-------+-------
 440 * 000000-00007f | 0000-007f             |   1    |   1   |  1
 441 * 000080-0007ff | 0080-07ff             |   1    |   2   |  2
 442 * 000800-00ffff | 0800-d7ff / e000-ffff |   1    |   3   |  3
 443 * 010000-10ffff | d800-dbff + dc00-dfff |   2    |   4   |  2
 444 *
 445 * Note that invalid code points > 10ffff cannot be represented in UTF-16.
 446 *
 447 * Parameters:
 448 * utf: target buffer
 449 * wcs: wide string to convert
 450 * utflen: size of target buffer
 451 *
 452 * Returns:
 453 * length of converted string, or -1 on failure
 454 *
 455 * Errors:
 456 * EINVAL: one of the input parameters is invalid (e.g. NULL)
 457 * ERANGE: the output buffer is too small
 458 */
 459int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen);
 460
 461/*
 462 * A critical section used in the implementation of the spawn
 463 * functions (mingw_spawnv[p]e()) and waitpid(). Intialised in
 464 * the replacement main() macro below.
 465 */
 466extern CRITICAL_SECTION pinfo_cs;
 467
 468/*
 469 * A replacement of main() that adds win32 specific initialization.
 470 */
 471
 472void mingw_startup();
 473#define main(c,v) dummy_decl_mingw_main(); \
 474static int mingw_main(c,v); \
 475int main(int argc, char **argv) \
 476{ \
 477        mingw_startup(); \
 478        return mingw_main(__argc, (void *)__argv); \
 479} \
 480static int mingw_main(c,v)
 481
 482/*
 483 * Used by Pthread API implementation for Windows
 484 */
 485extern int err_win_to_posix(DWORD winerr);