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 SA_RESTART 0
  73
  74struct itimerval {
  75        struct timeval it_value, it_interval;
  76};
  77#define ITIMER_REAL 0
  78
  79/*
  80 * sanitize preprocessor namespace polluted by Windows headers defining
  81 * macros which collide with git local versions
  82 */
  83#undef HELP_COMMAND /* from winuser.h */
  84
  85/*
  86 * trivial stubs
  87 */
  88
  89static inline int readlink(const char *path, char *buf, size_t bufsiz)
  90{ errno = ENOSYS; return -1; }
  91static inline int symlink(const char *oldpath, const char *newpath)
  92{ errno = ENOSYS; return -1; }
  93static inline int fchmod(int fildes, mode_t mode)
  94{ errno = ENOSYS; return -1; }
  95static inline pid_t fork(void)
  96{ errno = ENOSYS; return -1; }
  97static inline unsigned int alarm(unsigned int seconds)
  98{ return 0; }
  99static inline int fsync(int fd)
 100{ return _commit(fd); }
 101static inline pid_t getppid(void)
 102{ return 1; }
 103static inline void sync(void)
 104{}
 105static inline uid_t getuid(void)
 106{ return 1; }
 107static inline struct passwd *getpwnam(const char *name)
 108{ return NULL; }
 109static inline int fcntl(int fd, int cmd, ...)
 110{
 111        if (cmd == F_GETFD || cmd == F_SETFD)
 112                return 0;
 113        errno = EINVAL;
 114        return -1;
 115}
 116/* bash cannot reliably detect negative return codes as failure */
 117#define exit(code) exit((code) & 0xff)
 118#define sigemptyset(x) (void)0
 119static inline int sigaddset(sigset_t *set, int signum)
 120{ return 0; }
 121#define SIG_UNBLOCK 0
 122static inline int sigprocmask(int how, const sigset_t *set, sigset_t *oldset)
 123{ return 0; }
 124
 125/*
 126 * simple adaptors
 127 */
 128
 129int mingw_mkdir(const char *path, int mode);
 130#define mkdir mingw_mkdir
 131
 132#define WNOHANG 1
 133pid_t waitpid(pid_t pid, int *status, int options);
 134
 135#define kill mingw_kill
 136int mingw_kill(pid_t pid, int sig);
 137
 138#ifndef NO_OPENSSL
 139#include <openssl/ssl.h>
 140static inline int mingw_SSL_set_fd(SSL *ssl, int fd)
 141{
 142        return SSL_set_fd(ssl, _get_osfhandle(fd));
 143}
 144#define SSL_set_fd mingw_SSL_set_fd
 145
 146static inline int mingw_SSL_set_rfd(SSL *ssl, int fd)
 147{
 148        return SSL_set_rfd(ssl, _get_osfhandle(fd));
 149}
 150#define SSL_set_rfd mingw_SSL_set_rfd
 151
 152static inline int mingw_SSL_set_wfd(SSL *ssl, int fd)
 153{
 154        return SSL_set_wfd(ssl, _get_osfhandle(fd));
 155}
 156#define SSL_set_wfd mingw_SSL_set_wfd
 157#endif
 158
 159/*
 160 * implementations of missing functions
 161 */
 162
 163int pipe(int filedes[2]);
 164unsigned int sleep (unsigned int seconds);
 165int mkstemp(char *template);
 166int gettimeofday(struct timeval *tv, void *tz);
 167struct tm *gmtime_r(const time_t *timep, struct tm *result);
 168struct tm *localtime_r(const time_t *timep, struct tm *result);
 169int getpagesize(void);  /* defined in MinGW's libgcc.a */
 170struct passwd *getpwuid(uid_t uid);
 171int setitimer(int type, struct itimerval *in, struct itimerval *out);
 172int sigaction(int sig, struct sigaction *in, struct sigaction *out);
 173int link(const char *oldpath, const char *newpath);
 174
 175/*
 176 * replacements of existing functions
 177 */
 178
 179int mingw_unlink(const char *pathname);
 180#define unlink mingw_unlink
 181
 182int mingw_rmdir(const char *path);
 183#define rmdir mingw_rmdir
 184
 185int mingw_open (const char *filename, int oflags, ...);
 186#define open mingw_open
 187
 188int mingw_fgetc(FILE *stream);
 189#define fgetc mingw_fgetc
 190
 191FILE *mingw_fopen (const char *filename, const char *otype);
 192#define fopen mingw_fopen
 193
 194FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream);
 195#define freopen mingw_freopen
 196
 197int mingw_fflush(FILE *stream);
 198#define fflush mingw_fflush
 199
 200int mingw_access(const char *filename, int mode);
 201#undef access
 202#define access mingw_access
 203
 204int mingw_chdir(const char *dirname);
 205#define chdir mingw_chdir
 206
 207int mingw_chmod(const char *filename, int mode);
 208#define chmod mingw_chmod
 209
 210char *mingw_mktemp(char *template);
 211#define mktemp mingw_mktemp
 212
 213char *mingw_getcwd(char *pointer, int len);
 214#define getcwd mingw_getcwd
 215
 216char *mingw_getenv(const char *name);
 217#define getenv mingw_getenv
 218int mingw_putenv(const char *namevalue);
 219#define putenv mingw_putenv
 220#define unsetenv mingw_putenv
 221
 222int mingw_gethostname(char *host, int namelen);
 223#define gethostname mingw_gethostname
 224
 225struct hostent *mingw_gethostbyname(const char *host);
 226#define gethostbyname mingw_gethostbyname
 227
 228void mingw_freeaddrinfo(struct addrinfo *res);
 229#define freeaddrinfo mingw_freeaddrinfo
 230
 231int mingw_getaddrinfo(const char *node, const char *service,
 232                      const struct addrinfo *hints, struct addrinfo **res);
 233#define getaddrinfo mingw_getaddrinfo
 234
 235int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
 236                      char *host, DWORD hostlen, char *serv, DWORD servlen,
 237                      int flags);
 238#define getnameinfo mingw_getnameinfo
 239
 240int mingw_socket(int domain, int type, int protocol);
 241#define socket mingw_socket
 242
 243int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 244#define connect mingw_connect
 245
 246int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz);
 247#define bind mingw_bind
 248
 249int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen);
 250#define setsockopt mingw_setsockopt
 251
 252int mingw_shutdown(int sockfd, int how);
 253#define shutdown mingw_shutdown
 254
 255int mingw_listen(int sockfd, int backlog);
 256#define listen mingw_listen
 257
 258int mingw_accept(int sockfd, struct sockaddr *sa, socklen_t *sz);
 259#define accept mingw_accept
 260
 261int mingw_rename(const char*, const char*);
 262#define rename mingw_rename
 263
 264#if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
 265int mingw_getpagesize(void);
 266#define getpagesize mingw_getpagesize
 267#endif
 268
 269struct rlimit {
 270        unsigned int rlim_cur;
 271};
 272#define RLIMIT_NOFILE 0
 273
 274static inline int getrlimit(int resource, struct rlimit *rlp)
 275{
 276        if (resource != RLIMIT_NOFILE) {
 277                errno = EINVAL;
 278                return -1;
 279        }
 280
 281        rlp->rlim_cur = 2048;
 282        return 0;
 283}
 284
 285/*
 286 * Use mingw specific stat()/lstat()/fstat() implementations on Windows.
 287 */
 288#define off_t off64_t
 289#define lseek _lseeki64
 290
 291/* use struct stat with 64 bit st_size */
 292#ifdef stat
 293#undef stat
 294#endif
 295#define stat _stati64
 296int mingw_lstat(const char *file_name, struct stat *buf);
 297int mingw_stat(const char *file_name, struct stat *buf);
 298int mingw_fstat(int fd, struct stat *buf);
 299#ifdef fstat
 300#undef fstat
 301#endif
 302#define fstat mingw_fstat
 303#ifdef lstat
 304#undef lstat
 305#endif
 306#define lstat mingw_lstat
 307
 308#ifndef _stati64
 309# define _stati64(x,y) mingw_stat(x,y)
 310#elif defined (_USE_32BIT_TIME_T)
 311# define _stat32i64(x,y) mingw_stat(x,y)
 312#else
 313# define _stat64(x,y) mingw_stat(x,y)
 314#endif
 315
 316int mingw_utime(const char *file_name, const struct utimbuf *times);
 317#define utime mingw_utime
 318
 319pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
 320                     const char *dir,
 321                     int fhin, int fhout, int fherr);
 322int mingw_execvp(const char *cmd, char *const *argv);
 323#define execvp mingw_execvp
 324int mingw_execv(const char *cmd, char *const *argv);
 325#define execv mingw_execv
 326
 327static inline unsigned int git_ntohl(unsigned int x)
 328{ return (unsigned int)ntohl(x); }
 329#define ntohl git_ntohl
 330
 331sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 332#define signal mingw_signal
 333
 334int mingw_raise(int sig);
 335#define raise mingw_raise
 336
 337/*
 338 * ANSI emulation wrappers
 339 */
 340
 341void winansi_init(void);
 342HANDLE winansi_get_osfhandle(int fd);
 343
 344/*
 345 * git specific compatibility
 346 */
 347
 348#define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
 349#define is_dir_sep(c) ((c) == '/' || (c) == '\\')
 350static inline char *mingw_find_last_dir_sep(const char *path)
 351{
 352        char *ret = NULL;
 353        for (; *path; ++path)
 354                if (is_dir_sep(*path))
 355                        ret = (char *)path;
 356        return ret;
 357}
 358#define find_last_dir_sep mingw_find_last_dir_sep
 359int mingw_offset_1st_component(const char *path);
 360#define offset_1st_component mingw_offset_1st_component
 361#define PATH_SEP ';'
 362#define PRIuMAX "I64u"
 363#define PRId64 "I64d"
 364
 365void mingw_open_html(const char *path);
 366#define open_html mingw_open_html
 367
 368void mingw_mark_as_git_dir(const char *dir);
 369#define mark_as_git_dir mingw_mark_as_git_dir
 370
 371/**
 372 * Converts UTF-8 encoded string to UTF-16LE.
 373 *
 374 * To support repositories with legacy-encoded file names, invalid UTF-8 bytes
 375 * 0xa0 - 0xff are converted to corresponding printable Unicode chars \u00a0 -
 376 * \u00ff, and invalid UTF-8 bytes 0x80 - 0x9f (which would make non-printable
 377 * Unicode) are converted to hex-code.
 378 *
 379 * Lead-bytes not followed by an appropriate number of trail-bytes, over-long
 380 * encodings and 4-byte encodings > \u10ffff are detected as invalid UTF-8.
 381 *
 382 * Maximum space requirement for the target buffer is two wide chars per UTF-8
 383 * char (((strlen(utf) * 2) + 1) [* sizeof(wchar_t)]).
 384 *
 385 * The maximum space is needed only if the entire input string consists of
 386 * invalid UTF-8 bytes in range 0x80-0x9f, as per the following table:
 387 *
 388 *               |                   | UTF-8 | UTF-16 |
 389 *   Code point  |  UTF-8 sequence   | bytes | words  | ratio
 390 * --------------+-------------------+-------+--------+-------
 391 * 000000-00007f | 0-7f              |   1   |   1    |  1
 392 * 000080-0007ff | c2-df + 80-bf     |   2   |   1    |  0.5
 393 * 000800-00ffff | e0-ef + 2 * 80-bf |   3   |   1    |  0.33
 394 * 010000-10ffff | f0-f4 + 3 * 80-bf |   4   |  2 (a) |  0.5
 395 * invalid       | 80-9f             |   1   |  2 (b) |  2
 396 * invalid       | a0-ff             |   1   |   1    |  1
 397 *
 398 * (a) encoded as UTF-16 surrogate pair
 399 * (b) encoded as two hex digits
 400 *
 401 * Note that, while the UTF-8 encoding scheme can be extended to 5-byte, 6-byte
 402 * or even indefinite-byte sequences, the largest valid code point \u10ffff
 403 * encodes as only 4 UTF-8 bytes.
 404 *
 405 * Parameters:
 406 * wcs: wide char target buffer
 407 * utf: string to convert
 408 * wcslen: size of target buffer (in wchar_t's)
 409 * utflen: size of string to convert, or -1 if 0-terminated
 410 *
 411 * Returns:
 412 * length of converted string (_wcslen(wcs)), or -1 on failure
 413 *
 414 * Errors:
 415 * EINVAL: one of the input parameters is invalid (e.g. NULL)
 416 * ERANGE: the output buffer is too small
 417 */
 418int xutftowcsn(wchar_t *wcs, const char *utf, size_t wcslen, int utflen);
 419
 420/**
 421 * Simplified variant of xutftowcsn, assumes input string is \0-terminated.
 422 */
 423static inline int xutftowcs(wchar_t *wcs, const char *utf, size_t wcslen)
 424{
 425        return xutftowcsn(wcs, utf, wcslen, -1);
 426}
 427
 428/**
 429 * Simplified file system specific variant of xutftowcsn, assumes output
 430 * buffer size is MAX_PATH wide chars and input string is \0-terminated,
 431 * fails with ENAMETOOLONG if input string is too long.
 432 */
 433static inline int xutftowcs_path(wchar_t *wcs, const char *utf)
 434{
 435        int result = xutftowcsn(wcs, utf, MAX_PATH, -1);
 436        if (result < 0 && errno == ERANGE)
 437                errno = ENAMETOOLONG;
 438        return result;
 439}
 440
 441/**
 442 * Converts UTF-16LE encoded string to UTF-8.
 443 *
 444 * Maximum space requirement for the target buffer is three UTF-8 chars per
 445 * wide char ((_wcslen(wcs) * 3) + 1).
 446 *
 447 * The maximum space is needed only if the entire input string consists of
 448 * UTF-16 words in range 0x0800-0xd7ff or 0xe000-0xffff (i.e. \u0800-\uffff
 449 * modulo surrogate pairs), as per the following table:
 450 *
 451 *               |                       | UTF-16 | UTF-8 |
 452 *   Code point  |  UTF-16 sequence      | words  | bytes | ratio
 453 * --------------+-----------------------+--------+-------+-------
 454 * 000000-00007f | 0000-007f             |   1    |   1   |  1
 455 * 000080-0007ff | 0080-07ff             |   1    |   2   |  2
 456 * 000800-00ffff | 0800-d7ff / e000-ffff |   1    |   3   |  3
 457 * 010000-10ffff | d800-dbff + dc00-dfff |   2    |   4   |  2
 458 *
 459 * Note that invalid code points > 10ffff cannot be represented in UTF-16.
 460 *
 461 * Parameters:
 462 * utf: target buffer
 463 * wcs: wide string to convert
 464 * utflen: size of target buffer
 465 *
 466 * Returns:
 467 * length of converted string, or -1 on failure
 468 *
 469 * Errors:
 470 * EINVAL: one of the input parameters is invalid (e.g. NULL)
 471 * ERANGE: the output buffer is too small
 472 */
 473int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen);
 474
 475/*
 476 * A critical section used in the implementation of the spawn
 477 * functions (mingw_spawnv[p]e()) and waitpid(). Intialised in
 478 * the replacement main() macro below.
 479 */
 480extern CRITICAL_SECTION pinfo_cs;
 481
 482/*
 483 * A replacement of main() that adds win32 specific initialization.
 484 */
 485
 486void mingw_startup();
 487#define main(c,v) dummy_decl_mingw_main(); \
 488static int mingw_main(c,v); \
 489int main(int argc, char **argv) \
 490{ \
 491        mingw_startup(); \
 492        return mingw_main(__argc, (void *)__argv); \
 493} \
 494static int mingw_main(c,v)
 495
 496/*
 497 * Used by Pthread API implementation for Windows
 498 */
 499extern int err_win_to_posix(DWORD winerr);