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