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
 124int mingw_mkdir(const char *path, int mode);
 125#define mkdir mingw_mkdir
 126
 127#define WNOHANG 1
 128pid_t waitpid(pid_t pid, int *status, int options);
 129
 130#define kill mingw_kill
 131int mingw_kill(pid_t pid, int sig);
 132
 133#ifndef NO_OPENSSL
 134#include <openssl/ssl.h>
 135static inline int mingw_SSL_set_fd(SSL *ssl, int fd)
 136{
 137        return SSL_set_fd(ssl, _get_osfhandle(fd));
 138}
 139#define SSL_set_fd mingw_SSL_set_fd
 140
 141static inline int mingw_SSL_set_rfd(SSL *ssl, int fd)
 142{
 143        return SSL_set_rfd(ssl, _get_osfhandle(fd));
 144}
 145#define SSL_set_rfd mingw_SSL_set_rfd
 146
 147static inline int mingw_SSL_set_wfd(SSL *ssl, int fd)
 148{
 149        return SSL_set_wfd(ssl, _get_osfhandle(fd));
 150}
 151#define SSL_set_wfd mingw_SSL_set_wfd
 152#endif
 153
 154/*
 155 * implementations of missing functions
 156 */
 157
 158int pipe(int filedes[2]);
 159unsigned int sleep (unsigned int seconds);
 160int mkstemp(char *template);
 161int gettimeofday(struct timeval *tv, void *tz);
 162struct tm *gmtime_r(const time_t *timep, struct tm *result);
 163struct tm *localtime_r(const time_t *timep, struct tm *result);
 164int getpagesize(void);  /* defined in MinGW's libgcc.a */
 165struct passwd *getpwuid(uid_t uid);
 166int setitimer(int type, struct itimerval *in, struct itimerval *out);
 167int sigaction(int sig, struct sigaction *in, struct sigaction *out);
 168int link(const char *oldpath, const char *newpath);
 169
 170/*
 171 * replacements of existing functions
 172 */
 173
 174int mingw_unlink(const char *pathname);
 175#define unlink mingw_unlink
 176
 177int mingw_rmdir(const char *path);
 178#define rmdir mingw_rmdir
 179
 180int mingw_open (const char *filename, int oflags, ...);
 181#define open mingw_open
 182
 183int mingw_fgetc(FILE *stream);
 184#define fgetc mingw_fgetc
 185
 186FILE *mingw_fopen (const char *filename, const char *otype);
 187#define fopen mingw_fopen
 188
 189FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream);
 190#define freopen mingw_freopen
 191
 192int mingw_fflush(FILE *stream);
 193#define fflush mingw_fflush
 194
 195int mingw_access(const char *filename, int mode);
 196#undef access
 197#define access mingw_access
 198
 199int mingw_chdir(const char *dirname);
 200#define chdir mingw_chdir
 201
 202int mingw_chmod(const char *filename, int mode);
 203#define chmod mingw_chmod
 204
 205char *mingw_mktemp(char *template);
 206#define mktemp mingw_mktemp
 207
 208char *mingw_getcwd(char *pointer, int len);
 209#define getcwd mingw_getcwd
 210
 211char *mingw_getenv(const char *name);
 212#define getenv mingw_getenv
 213
 214int mingw_gethostname(char *host, int namelen);
 215#define gethostname mingw_gethostname
 216
 217struct hostent *mingw_gethostbyname(const char *host);
 218#define gethostbyname mingw_gethostbyname
 219
 220void mingw_freeaddrinfo(struct addrinfo *res);
 221#define freeaddrinfo mingw_freeaddrinfo
 222
 223int mingw_getaddrinfo(const char *node, const char *service,
 224                      const struct addrinfo *hints, struct addrinfo **res);
 225#define getaddrinfo mingw_getaddrinfo
 226
 227int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
 228                      char *host, DWORD hostlen, char *serv, DWORD servlen,
 229                      int flags);
 230#define getnameinfo mingw_getnameinfo
 231
 232int mingw_socket(int domain, int type, int protocol);
 233#define socket mingw_socket
 234
 235int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 236#define connect mingw_connect
 237
 238int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz);
 239#define bind mingw_bind
 240
 241int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen);
 242#define setsockopt mingw_setsockopt
 243
 244int mingw_shutdown(int sockfd, int how);
 245#define shutdown mingw_shutdown
 246
 247int mingw_listen(int sockfd, int backlog);
 248#define listen mingw_listen
 249
 250int mingw_accept(int sockfd, struct sockaddr *sa, socklen_t *sz);
 251#define accept mingw_accept
 252
 253int mingw_rename(const char*, const char*);
 254#define rename mingw_rename
 255
 256#if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
 257int mingw_getpagesize(void);
 258#define getpagesize mingw_getpagesize
 259#endif
 260
 261struct rlimit {
 262        unsigned int rlim_cur;
 263};
 264#define RLIMIT_NOFILE 0
 265
 266static inline int getrlimit(int resource, struct rlimit *rlp)
 267{
 268        if (resource != RLIMIT_NOFILE) {
 269                errno = EINVAL;
 270                return -1;
 271        }
 272
 273        rlp->rlim_cur = 2048;
 274        return 0;
 275}
 276
 277/*
 278 * Use mingw specific stat()/lstat()/fstat() implementations on Windows.
 279 */
 280#define off_t off64_t
 281#define lseek _lseeki64
 282
 283/* use struct stat with 64 bit st_size */
 284#ifdef stat
 285#undef stat
 286#endif
 287#define stat _stati64
 288int mingw_lstat(const char *file_name, struct stat *buf);
 289int mingw_stat(const char *file_name, struct stat *buf);
 290int mingw_fstat(int fd, struct stat *buf);
 291#ifdef fstat
 292#undef fstat
 293#endif
 294#define fstat mingw_fstat
 295#ifdef lstat
 296#undef lstat
 297#endif
 298#define lstat mingw_lstat
 299
 300#ifndef _stati64
 301# define _stati64(x,y) mingw_stat(x,y)
 302#elif defined (_USE_32BIT_TIME_T)
 303# define _stat32i64(x,y) mingw_stat(x,y)
 304#else
 305# define _stat64(x,y) mingw_stat(x,y)
 306#endif
 307
 308int mingw_utime(const char *file_name, const struct utimbuf *times);
 309#define utime mingw_utime
 310
 311pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
 312                     const char *dir,
 313                     int fhin, int fhout, int fherr);
 314int mingw_execvp(const char *cmd, char *const *argv);
 315#define execvp mingw_execvp
 316int mingw_execv(const char *cmd, char *const *argv);
 317#define execv mingw_execv
 318
 319static inline unsigned int git_ntohl(unsigned int x)
 320{ return (unsigned int)ntohl(x); }
 321#define ntohl git_ntohl
 322
 323sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 324#define signal mingw_signal
 325
 326int mingw_raise(int sig);
 327#define raise mingw_raise
 328
 329/*
 330 * ANSI emulation wrappers
 331 */
 332
 333void winansi_init(void);
 334HANDLE winansi_get_osfhandle(int fd);
 335
 336/*
 337 * git specific compatibility
 338 */
 339
 340#define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
 341#define is_dir_sep(c) ((c) == '/' || (c) == '\\')
 342static inline char *mingw_find_last_dir_sep(const char *path)
 343{
 344        char *ret = NULL;
 345        for (; *path; ++path)
 346                if (is_dir_sep(*path))
 347                        ret = (char *)path;
 348        return ret;
 349}
 350#define find_last_dir_sep mingw_find_last_dir_sep
 351int mingw_offset_1st_component(const char *path);
 352#define offset_1st_component mingw_offset_1st_component
 353#define PATH_SEP ';'
 354#define PRIuMAX "I64u"
 355#define PRId64 "I64d"
 356
 357void mingw_open_html(const char *path);
 358#define open_html mingw_open_html
 359
 360/*
 361 * helpers
 362 */
 363
 364char **make_augmented_environ(const char *const *vars);
 365void free_environ(char **env);
 366
 367/**
 368 * Converts UTF-8 encoded string to UTF-16LE.
 369 *
 370 * To support repositories with legacy-encoded file names, invalid UTF-8 bytes
 371 * 0xa0 - 0xff are converted to corresponding printable Unicode chars \u00a0 -
 372 * \u00ff, and invalid UTF-8 bytes 0x80 - 0x9f (which would make non-printable
 373 * Unicode) are converted to hex-code.
 374 *
 375 * Lead-bytes not followed by an appropriate number of trail-bytes, over-long
 376 * encodings and 4-byte encodings > \u10ffff are detected as invalid UTF-8.
 377 *
 378 * Maximum space requirement for the target buffer is two wide chars per UTF-8
 379 * char (((strlen(utf) * 2) + 1) [* sizeof(wchar_t)]).
 380 *
 381 * The maximum space is needed only if the entire input string consists of
 382 * invalid UTF-8 bytes in range 0x80-0x9f, as per the following table:
 383 *
 384 *               |                   | UTF-8 | UTF-16 |
 385 *   Code point  |  UTF-8 sequence   | bytes | words  | ratio
 386 * --------------+-------------------+-------+--------+-------
 387 * 000000-00007f | 0-7f              |   1   |   1    |  1
 388 * 000080-0007ff | c2-df + 80-bf     |   2   |   1    |  0.5
 389 * 000800-00ffff | e0-ef + 2 * 80-bf |   3   |   1    |  0.33
 390 * 010000-10ffff | f0-f4 + 3 * 80-bf |   4   |  2 (a) |  0.5
 391 * invalid       | 80-9f             |   1   |  2 (b) |  2
 392 * invalid       | a0-ff             |   1   |   1    |  1
 393 *
 394 * (a) encoded as UTF-16 surrogate pair
 395 * (b) encoded as two hex digits
 396 *
 397 * Note that, while the UTF-8 encoding scheme can be extended to 5-byte, 6-byte
 398 * or even indefinite-byte sequences, the largest valid code point \u10ffff
 399 * encodes as only 4 UTF-8 bytes.
 400 *
 401 * Parameters:
 402 * wcs: wide char target buffer
 403 * utf: string to convert
 404 * wcslen: size of target buffer (in wchar_t's)
 405 * utflen: size of string to convert, or -1 if 0-terminated
 406 *
 407 * Returns:
 408 * length of converted string (_wcslen(wcs)), or -1 on failure
 409 *
 410 * Errors:
 411 * EINVAL: one of the input parameters is invalid (e.g. NULL)
 412 * ERANGE: the output buffer is too small
 413 */
 414int xutftowcsn(wchar_t *wcs, const char *utf, size_t wcslen, int utflen);
 415
 416/**
 417 * Simplified variant of xutftowcsn, assumes input string is \0-terminated.
 418 */
 419static inline int xutftowcs(wchar_t *wcs, const char *utf, size_t wcslen)
 420{
 421        return xutftowcsn(wcs, utf, wcslen, -1);
 422}
 423
 424/**
 425 * Simplified file system specific variant of xutftowcsn, assumes output
 426 * buffer size is MAX_PATH wide chars and input string is \0-terminated,
 427 * fails with ENAMETOOLONG if input string is too long.
 428 */
 429static inline int xutftowcs_path(wchar_t *wcs, const char *utf)
 430{
 431        int result = xutftowcsn(wcs, utf, MAX_PATH, -1);
 432        if (result < 0 && errno == ERANGE)
 433                errno = ENAMETOOLONG;
 434        return result;
 435}
 436
 437/**
 438 * Converts UTF-16LE encoded string to UTF-8.
 439 *
 440 * Maximum space requirement for the target buffer is three UTF-8 chars per
 441 * wide char ((_wcslen(wcs) * 3) + 1).
 442 *
 443 * The maximum space is needed only if the entire input string consists of
 444 * UTF-16 words in range 0x0800-0xd7ff or 0xe000-0xffff (i.e. \u0800-\uffff
 445 * modulo surrogate pairs), as per the following table:
 446 *
 447 *               |                       | UTF-16 | UTF-8 |
 448 *   Code point  |  UTF-16 sequence      | words  | bytes | ratio
 449 * --------------+-----------------------+--------+-------+-------
 450 * 000000-00007f | 0000-007f             |   1    |   1   |  1
 451 * 000080-0007ff | 0080-07ff             |   1    |   2   |  2
 452 * 000800-00ffff | 0800-d7ff / e000-ffff |   1    |   3   |  3
 453 * 010000-10ffff | d800-dbff + dc00-dfff |   2    |   4   |  2
 454 *
 455 * Note that invalid code points > 10ffff cannot be represented in UTF-16.
 456 *
 457 * Parameters:
 458 * utf: target buffer
 459 * wcs: wide string to convert
 460 * utflen: size of target buffer
 461 *
 462 * Returns:
 463 * length of converted string, or -1 on failure
 464 *
 465 * Errors:
 466 * EINVAL: one of the input parameters is invalid (e.g. NULL)
 467 * ERANGE: the output buffer is too small
 468 */
 469int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen);
 470
 471/*
 472 * A critical section used in the implementation of the spawn
 473 * functions (mingw_spawnv[p]e()) and waitpid(). Intialised in
 474 * the replacement main() macro below.
 475 */
 476extern CRITICAL_SECTION pinfo_cs;
 477
 478/*
 479 * A replacement of main() that adds win32 specific initialization.
 480 */
 481
 482void mingw_startup();
 483#define main(c,v) dummy_decl_mingw_main(); \
 484static int mingw_main(c,v); \
 485int main(int argc, char **argv) \
 486{ \
 487        mingw_startup(); \
 488        return mingw_main(__argc, (void *)__argv); \
 489} \
 490static int mingw_main(c,v)
 491
 492/*
 493 * Used by Pthread API implementation for Windows
 494 */
 495extern int err_win_to_posix(DWORD winerr);