Andrew's git / gitweb.git / compat/mingw.h
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compat / mingw.hon commit Merge branch 'maint' (c518059)
   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 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#define sigemptyset(x) (void)0
 117static inline int sigaddset(sigset_t *set, int signum)
 118{ return 0; }
 119#define SIG_UNBLOCK 0
 120static inline int sigprocmask(int how, const sigset_t *set, sigset_t *oldset)
 121{ return 0; }
 122static inline pid_t getppid(void)
 123{ return 1; }
 124static inline pid_t getpgid(pid_t pid)
 125{ return pid == 0 ? getpid() : pid; }
 126static inline pid_t tcgetpgrp(int fd)
 127{ return getpid(); }
 128
 129/*
 130 * simple adaptors
 131 */
 132
 133int mingw_mkdir(const char *path, int mode);
 134#define mkdir mingw_mkdir
 135
 136#define WNOHANG 1
 137pid_t waitpid(pid_t pid, int *status, int options);
 138
 139#define kill mingw_kill
 140int mingw_kill(pid_t pid, int sig);
 141
 142#ifndef NO_OPENSSL
 143#include <openssl/ssl.h>
 144static inline int mingw_SSL_set_fd(SSL *ssl, int fd)
 145{
 146        return SSL_set_fd(ssl, _get_osfhandle(fd));
 147}
 148#define SSL_set_fd mingw_SSL_set_fd
 149
 150static inline int mingw_SSL_set_rfd(SSL *ssl, int fd)
 151{
 152        return SSL_set_rfd(ssl, _get_osfhandle(fd));
 153}
 154#define SSL_set_rfd mingw_SSL_set_rfd
 155
 156static inline int mingw_SSL_set_wfd(SSL *ssl, int fd)
 157{
 158        return SSL_set_wfd(ssl, _get_osfhandle(fd));
 159}
 160#define SSL_set_wfd mingw_SSL_set_wfd
 161#endif
 162
 163/*
 164 * implementations of missing functions
 165 */
 166
 167int pipe(int filedes[2]);
 168unsigned int sleep (unsigned int seconds);
 169int mkstemp(char *template);
 170int gettimeofday(struct timeval *tv, void *tz);
 171struct tm *gmtime_r(const time_t *timep, struct tm *result);
 172struct tm *localtime_r(const time_t *timep, struct tm *result);
 173int getpagesize(void);  /* defined in MinGW's libgcc.a */
 174struct passwd *getpwuid(uid_t uid);
 175int setitimer(int type, struct itimerval *in, struct itimerval *out);
 176int sigaction(int sig, struct sigaction *in, struct sigaction *out);
 177int link(const char *oldpath, const char *newpath);
 178
 179/*
 180 * replacements of existing functions
 181 */
 182
 183int mingw_unlink(const char *pathname);
 184#define unlink mingw_unlink
 185
 186int mingw_rmdir(const char *path);
 187#define rmdir mingw_rmdir
 188
 189int mingw_open (const char *filename, int oflags, ...);
 190#define open mingw_open
 191
 192int mingw_fgetc(FILE *stream);
 193#define fgetc mingw_fgetc
 194
 195FILE *mingw_fopen (const char *filename, const char *otype);
 196#define fopen mingw_fopen
 197
 198FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream);
 199#define freopen mingw_freopen
 200
 201int mingw_fflush(FILE *stream);
 202#define fflush mingw_fflush
 203
 204int mingw_access(const char *filename, int mode);
 205#undef access
 206#define access mingw_access
 207
 208int mingw_chdir(const char *dirname);
 209#define chdir mingw_chdir
 210
 211int mingw_chmod(const char *filename, int mode);
 212#define chmod mingw_chmod
 213
 214char *mingw_mktemp(char *template);
 215#define mktemp mingw_mktemp
 216
 217char *mingw_getcwd(char *pointer, int len);
 218#define getcwd mingw_getcwd
 219
 220char *mingw_getenv(const char *name);
 221#define getenv mingw_getenv
 222int mingw_putenv(const char *namevalue);
 223#define putenv mingw_putenv
 224#define unsetenv mingw_putenv
 225
 226int mingw_gethostname(char *host, int namelen);
 227#define gethostname mingw_gethostname
 228
 229struct hostent *mingw_gethostbyname(const char *host);
 230#define gethostbyname mingw_gethostbyname
 231
 232void mingw_freeaddrinfo(struct addrinfo *res);
 233#define freeaddrinfo mingw_freeaddrinfo
 234
 235int mingw_getaddrinfo(const char *node, const char *service,
 236                      const struct addrinfo *hints, struct addrinfo **res);
 237#define getaddrinfo mingw_getaddrinfo
 238
 239int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
 240                      char *host, DWORD hostlen, char *serv, DWORD servlen,
 241                      int flags);
 242#define getnameinfo mingw_getnameinfo
 243
 244int mingw_socket(int domain, int type, int protocol);
 245#define socket mingw_socket
 246
 247int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 248#define connect mingw_connect
 249
 250int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz);
 251#define bind mingw_bind
 252
 253int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen);
 254#define setsockopt mingw_setsockopt
 255
 256int mingw_shutdown(int sockfd, int how);
 257#define shutdown mingw_shutdown
 258
 259int mingw_listen(int sockfd, int backlog);
 260#define listen mingw_listen
 261
 262int mingw_accept(int sockfd, struct sockaddr *sa, socklen_t *sz);
 263#define accept mingw_accept
 264
 265int mingw_rename(const char*, const char*);
 266#define rename mingw_rename
 267
 268#if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
 269int mingw_getpagesize(void);
 270#define getpagesize mingw_getpagesize
 271#endif
 272
 273struct rlimit {
 274        unsigned int rlim_cur;
 275};
 276#define RLIMIT_NOFILE 0
 277
 278static inline int getrlimit(int resource, struct rlimit *rlp)
 279{
 280        if (resource != RLIMIT_NOFILE) {
 281                errno = EINVAL;
 282                return -1;
 283        }
 284
 285        rlp->rlim_cur = 2048;
 286        return 0;
 287}
 288
 289/*
 290 * Use mingw specific stat()/lstat()/fstat() implementations on Windows.
 291 */
 292#define off_t off64_t
 293#define lseek _lseeki64
 294
 295/* use struct stat with 64 bit st_size */
 296#ifdef stat
 297#undef stat
 298#endif
 299#define stat _stati64
 300int mingw_lstat(const char *file_name, struct stat *buf);
 301int mingw_stat(const char *file_name, struct stat *buf);
 302int mingw_fstat(int fd, struct stat *buf);
 303#ifdef fstat
 304#undef fstat
 305#endif
 306#define fstat mingw_fstat
 307#ifdef lstat
 308#undef lstat
 309#endif
 310#define lstat mingw_lstat
 311
 312#ifndef _stati64
 313# define _stati64(x,y) mingw_stat(x,y)
 314#elif defined (_USE_32BIT_TIME_T)
 315# define _stat32i64(x,y) mingw_stat(x,y)
 316#else
 317# define _stat64(x,y) mingw_stat(x,y)
 318#endif
 319
 320int mingw_utime(const char *file_name, const struct utimbuf *times);
 321#define utime mingw_utime
 322
 323pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
 324                     const char *dir,
 325                     int fhin, int fhout, int fherr);
 326int mingw_execvp(const char *cmd, char *const *argv);
 327#define execvp mingw_execvp
 328int mingw_execv(const char *cmd, char *const *argv);
 329#define execv mingw_execv
 330
 331static inline unsigned int git_ntohl(unsigned int x)
 332{ return (unsigned int)ntohl(x); }
 333#define ntohl git_ntohl
 334
 335sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 336#define signal mingw_signal
 337
 338int mingw_raise(int sig);
 339#define raise mingw_raise
 340
 341/*
 342 * ANSI emulation wrappers
 343 */
 344
 345void winansi_init(void);
 346HANDLE winansi_get_osfhandle(int fd);
 347
 348/*
 349 * git specific compatibility
 350 */
 351
 352#define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
 353#define is_dir_sep(c) ((c) == '/' || (c) == '\\')
 354static inline char *mingw_find_last_dir_sep(const char *path)
 355{
 356        char *ret = NULL;
 357        for (; *path; ++path)
 358                if (is_dir_sep(*path))
 359                        ret = (char *)path;
 360        return ret;
 361}
 362#define find_last_dir_sep mingw_find_last_dir_sep
 363int mingw_offset_1st_component(const char *path);
 364#define offset_1st_component mingw_offset_1st_component
 365#define PATH_SEP ';'
 366#define PRIuMAX "I64u"
 367#define PRId64 "I64d"
 368
 369void mingw_open_html(const char *path);
 370#define open_html mingw_open_html
 371
 372void mingw_mark_as_git_dir(const char *dir);
 373#define mark_as_git_dir mingw_mark_as_git_dir
 374
 375/**
 376 * Converts UTF-8 encoded string to UTF-16LE.
 377 *
 378 * To support repositories with legacy-encoded file names, invalid UTF-8 bytes
 379 * 0xa0 - 0xff are converted to corresponding printable Unicode chars \u00a0 -
 380 * \u00ff, and invalid UTF-8 bytes 0x80 - 0x9f (which would make non-printable
 381 * Unicode) are converted to hex-code.
 382 *
 383 * Lead-bytes not followed by an appropriate number of trail-bytes, over-long
 384 * encodings and 4-byte encodings > \u10ffff are detected as invalid UTF-8.
 385 *
 386 * Maximum space requirement for the target buffer is two wide chars per UTF-8
 387 * char (((strlen(utf) * 2) + 1) [* sizeof(wchar_t)]).
 388 *
 389 * The maximum space is needed only if the entire input string consists of
 390 * invalid UTF-8 bytes in range 0x80-0x9f, as per the following table:
 391 *
 392 *               |                   | UTF-8 | UTF-16 |
 393 *   Code point  |  UTF-8 sequence   | bytes | words  | ratio
 394 * --------------+-------------------+-------+--------+-------
 395 * 000000-00007f | 0-7f              |   1   |   1    |  1
 396 * 000080-0007ff | c2-df + 80-bf     |   2   |   1    |  0.5
 397 * 000800-00ffff | e0-ef + 2 * 80-bf |   3   |   1    |  0.33
 398 * 010000-10ffff | f0-f4 + 3 * 80-bf |   4   |  2 (a) |  0.5
 399 * invalid       | 80-9f             |   1   |  2 (b) |  2
 400 * invalid       | a0-ff             |   1   |   1    |  1
 401 *
 402 * (a) encoded as UTF-16 surrogate pair
 403 * (b) encoded as two hex digits
 404 *
 405 * Note that, while the UTF-8 encoding scheme can be extended to 5-byte, 6-byte
 406 * or even indefinite-byte sequences, the largest valid code point \u10ffff
 407 * encodes as only 4 UTF-8 bytes.
 408 *
 409 * Parameters:
 410 * wcs: wide char target buffer
 411 * utf: string to convert
 412 * wcslen: size of target buffer (in wchar_t's)
 413 * utflen: size of string to convert, or -1 if 0-terminated
 414 *
 415 * Returns:
 416 * length of converted string (_wcslen(wcs)), or -1 on failure
 417 *
 418 * Errors:
 419 * EINVAL: one of the input parameters is invalid (e.g. NULL)
 420 * ERANGE: the output buffer is too small
 421 */
 422int xutftowcsn(wchar_t *wcs, const char *utf, size_t wcslen, int utflen);
 423
 424/**
 425 * Simplified variant of xutftowcsn, assumes input string is \0-terminated.
 426 */
 427static inline int xutftowcs(wchar_t *wcs, const char *utf, size_t wcslen)
 428{
 429        return xutftowcsn(wcs, utf, wcslen, -1);
 430}
 431
 432/**
 433 * Simplified file system specific variant of xutftowcsn, assumes output
 434 * buffer size is MAX_PATH wide chars and input string is \0-terminated,
 435 * fails with ENAMETOOLONG if input string is too long.
 436 */
 437static inline int xutftowcs_path(wchar_t *wcs, const char *utf)
 438{
 439        int result = xutftowcsn(wcs, utf, MAX_PATH, -1);
 440        if (result < 0 && errno == ERANGE)
 441                errno = ENAMETOOLONG;
 442        return result;
 443}
 444
 445/**
 446 * Converts UTF-16LE encoded string to UTF-8.
 447 *
 448 * Maximum space requirement for the target buffer is three UTF-8 chars per
 449 * wide char ((_wcslen(wcs) * 3) + 1).
 450 *
 451 * The maximum space is needed only if the entire input string consists of
 452 * UTF-16 words in range 0x0800-0xd7ff or 0xe000-0xffff (i.e. \u0800-\uffff
 453 * modulo surrogate pairs), as per the following table:
 454 *
 455 *               |                       | UTF-16 | UTF-8 |
 456 *   Code point  |  UTF-16 sequence      | words  | bytes | ratio
 457 * --------------+-----------------------+--------+-------+-------
 458 * 000000-00007f | 0000-007f             |   1    |   1   |  1
 459 * 000080-0007ff | 0080-07ff             |   1    |   2   |  2
 460 * 000800-00ffff | 0800-d7ff / e000-ffff |   1    |   3   |  3
 461 * 010000-10ffff | d800-dbff + dc00-dfff |   2    |   4   |  2
 462 *
 463 * Note that invalid code points > 10ffff cannot be represented in UTF-16.
 464 *
 465 * Parameters:
 466 * utf: target buffer
 467 * wcs: wide string to convert
 468 * utflen: size of target buffer
 469 *
 470 * Returns:
 471 * length of converted string, or -1 on failure
 472 *
 473 * Errors:
 474 * EINVAL: one of the input parameters is invalid (e.g. NULL)
 475 * ERANGE: the output buffer is too small
 476 */
 477int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen);
 478
 479/*
 480 * A critical section used in the implementation of the spawn
 481 * functions (mingw_spawnv[p]e()) and waitpid(). Intialised in
 482 * the replacement main() macro below.
 483 */
 484extern CRITICAL_SECTION pinfo_cs;
 485
 486/*
 487 * A replacement of main() that adds win32 specific initialization.
 488 */
 489
 490void mingw_startup();
 491#define main(c,v) dummy_decl_mingw_main(); \
 492static int mingw_main(c,v); \
 493int main(int argc, char **argv) \
 494{ \
 495        mingw_startup(); \
 496        return mingw_main(__argc, (void *)__argv); \
 497} \
 498static int mingw_main(c,v)
 499
 500/*
 501 * Used by Pthread API implementation for Windows
 502 */
 503extern int err_win_to_posix(DWORD winerr);