Andrew's git / gitweb.git / compat/mingw.h
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compat / mingw.hon commit Merge branch 'jk/rebase-no-autostash' into maint (697bd28)
   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
  79struct utsname {
  80        char sysname[16];
  81        char nodename[1];
  82        char release[16];
  83        char version[16];
  84        char machine[1];
  85};
  86
  87/*
  88 * sanitize preprocessor namespace polluted by Windows headers defining
  89 * macros which collide with git local versions
  90 */
  91#undef HELP_COMMAND /* from winuser.h */
  92
  93/*
  94 * trivial stubs
  95 */
  96
  97static inline int readlink(const char *path, char *buf, size_t bufsiz)
  98{ errno = ENOSYS; return -1; }
  99static inline int symlink(const char *oldpath, const char *newpath)
 100{ errno = ENOSYS; return -1; }
 101static inline int fchmod(int fildes, mode_t mode)
 102{ errno = ENOSYS; return -1; }
 103static inline pid_t fork(void)
 104{ errno = ENOSYS; return -1; }
 105static inline unsigned int alarm(unsigned int seconds)
 106{ return 0; }
 107static inline int fsync(int fd)
 108{ return _commit(fd); }
 109static inline void sync(void)
 110{}
 111static inline uid_t getuid(void)
 112{ return 1; }
 113static inline struct passwd *getpwnam(const char *name)
 114{ return NULL; }
 115static inline int fcntl(int fd, int cmd, ...)
 116{
 117        if (cmd == F_GETFD || cmd == F_SETFD)
 118                return 0;
 119        errno = EINVAL;
 120        return -1;
 121}
 122/* bash cannot reliably detect negative return codes as failure */
 123#define exit(code) exit((code) & 0xff)
 124#define sigemptyset(x) (void)0
 125static inline int sigaddset(sigset_t *set, int signum)
 126{ return 0; }
 127#define SIG_UNBLOCK 0
 128static inline int sigprocmask(int how, const sigset_t *set, sigset_t *oldset)
 129{ return 0; }
 130static inline pid_t getppid(void)
 131{ return 1; }
 132static inline pid_t getpgid(pid_t pid)
 133{ return pid == 0 ? getpid() : pid; }
 134static inline pid_t tcgetpgrp(int fd)
 135{ return getpid(); }
 136
 137/*
 138 * simple adaptors
 139 */
 140
 141int mingw_mkdir(const char *path, int mode);
 142#define mkdir mingw_mkdir
 143
 144#define WNOHANG 1
 145pid_t waitpid(pid_t pid, int *status, int options);
 146
 147#define kill mingw_kill
 148int mingw_kill(pid_t pid, int sig);
 149
 150#ifndef NO_OPENSSL
 151#include <openssl/ssl.h>
 152static inline int mingw_SSL_set_fd(SSL *ssl, int fd)
 153{
 154        return SSL_set_fd(ssl, _get_osfhandle(fd));
 155}
 156#define SSL_set_fd mingw_SSL_set_fd
 157
 158static inline int mingw_SSL_set_rfd(SSL *ssl, int fd)
 159{
 160        return SSL_set_rfd(ssl, _get_osfhandle(fd));
 161}
 162#define SSL_set_rfd mingw_SSL_set_rfd
 163
 164static inline int mingw_SSL_set_wfd(SSL *ssl, int fd)
 165{
 166        return SSL_set_wfd(ssl, _get_osfhandle(fd));
 167}
 168#define SSL_set_wfd mingw_SSL_set_wfd
 169#endif
 170
 171/*
 172 * implementations of missing functions
 173 */
 174
 175int pipe(int filedes[2]);
 176unsigned int sleep (unsigned int seconds);
 177int mkstemp(char *template);
 178int gettimeofday(struct timeval *tv, void *tz);
 179struct tm *gmtime_r(const time_t *timep, struct tm *result);
 180struct tm *localtime_r(const time_t *timep, struct tm *result);
 181int getpagesize(void);  /* defined in MinGW's libgcc.a */
 182struct passwd *getpwuid(uid_t uid);
 183int setitimer(int type, struct itimerval *in, struct itimerval *out);
 184int sigaction(int sig, struct sigaction *in, struct sigaction *out);
 185int link(const char *oldpath, const char *newpath);
 186int uname(struct utsname *buf);
 187
 188/*
 189 * replacements of existing functions
 190 */
 191
 192int mingw_unlink(const char *pathname);
 193#define unlink mingw_unlink
 194
 195int mingw_rmdir(const char *path);
 196#define rmdir mingw_rmdir
 197
 198int mingw_open (const char *filename, int oflags, ...);
 199#define open mingw_open
 200
 201int mingw_fgetc(FILE *stream);
 202#define fgetc mingw_fgetc
 203
 204FILE *mingw_fopen (const char *filename, const char *otype);
 205#define fopen mingw_fopen
 206
 207FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream);
 208#define freopen mingw_freopen
 209
 210int mingw_fflush(FILE *stream);
 211#define fflush mingw_fflush
 212
 213int mingw_access(const char *filename, int mode);
 214#undef access
 215#define access mingw_access
 216
 217int mingw_chdir(const char *dirname);
 218#define chdir mingw_chdir
 219
 220int mingw_chmod(const char *filename, int mode);
 221#define chmod mingw_chmod
 222
 223char *mingw_mktemp(char *template);
 224#define mktemp mingw_mktemp
 225
 226char *mingw_getcwd(char *pointer, int len);
 227#define getcwd mingw_getcwd
 228
 229char *mingw_getenv(const char *name);
 230#define getenv mingw_getenv
 231int mingw_putenv(const char *namevalue);
 232#define putenv mingw_putenv
 233#define unsetenv mingw_putenv
 234
 235int mingw_gethostname(char *host, int namelen);
 236#define gethostname mingw_gethostname
 237
 238struct hostent *mingw_gethostbyname(const char *host);
 239#define gethostbyname mingw_gethostbyname
 240
 241void mingw_freeaddrinfo(struct addrinfo *res);
 242#define freeaddrinfo mingw_freeaddrinfo
 243
 244int mingw_getaddrinfo(const char *node, const char *service,
 245                      const struct addrinfo *hints, struct addrinfo **res);
 246#define getaddrinfo mingw_getaddrinfo
 247
 248int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
 249                      char *host, DWORD hostlen, char *serv, DWORD servlen,
 250                      int flags);
 251#define getnameinfo mingw_getnameinfo
 252
 253int mingw_socket(int domain, int type, int protocol);
 254#define socket mingw_socket
 255
 256int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 257#define connect mingw_connect
 258
 259int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz);
 260#define bind mingw_bind
 261
 262int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen);
 263#define setsockopt mingw_setsockopt
 264
 265int mingw_shutdown(int sockfd, int how);
 266#define shutdown mingw_shutdown
 267
 268int mingw_listen(int sockfd, int backlog);
 269#define listen mingw_listen
 270
 271int mingw_accept(int sockfd, struct sockaddr *sa, socklen_t *sz);
 272#define accept mingw_accept
 273
 274int mingw_rename(const char*, const char*);
 275#define rename mingw_rename
 276
 277#if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
 278int mingw_getpagesize(void);
 279#define getpagesize mingw_getpagesize
 280#endif
 281
 282struct rlimit {
 283        unsigned int rlim_cur;
 284};
 285#define RLIMIT_NOFILE 0
 286
 287static inline int getrlimit(int resource, struct rlimit *rlp)
 288{
 289        if (resource != RLIMIT_NOFILE) {
 290                errno = EINVAL;
 291                return -1;
 292        }
 293
 294        rlp->rlim_cur = 2048;
 295        return 0;
 296}
 297
 298/*
 299 * Use mingw specific stat()/lstat()/fstat() implementations on Windows.
 300 */
 301#define off_t off64_t
 302#define lseek _lseeki64
 303
 304/* use struct stat with 64 bit st_size */
 305#ifdef stat
 306#undef stat
 307#endif
 308#define stat _stati64
 309int mingw_lstat(const char *file_name, struct stat *buf);
 310int mingw_stat(const char *file_name, struct stat *buf);
 311int mingw_fstat(int fd, struct stat *buf);
 312#ifdef fstat
 313#undef fstat
 314#endif
 315#define fstat mingw_fstat
 316#ifdef lstat
 317#undef lstat
 318#endif
 319#define lstat mingw_lstat
 320
 321#ifndef _stati64
 322# define _stati64(x,y) mingw_stat(x,y)
 323#elif defined (_USE_32BIT_TIME_T)
 324# define _stat32i64(x,y) mingw_stat(x,y)
 325#else
 326# define _stat64(x,y) mingw_stat(x,y)
 327#endif
 328
 329int mingw_utime(const char *file_name, const struct utimbuf *times);
 330#define utime mingw_utime
 331
 332pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
 333                     const char *dir,
 334                     int fhin, int fhout, int fherr);
 335int mingw_execvp(const char *cmd, char *const *argv);
 336#define execvp mingw_execvp
 337int mingw_execv(const char *cmd, char *const *argv);
 338#define execv mingw_execv
 339
 340static inline unsigned int git_ntohl(unsigned int x)
 341{ return (unsigned int)ntohl(x); }
 342#define ntohl git_ntohl
 343
 344sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 345#define signal mingw_signal
 346
 347int mingw_raise(int sig);
 348#define raise mingw_raise
 349
 350/*
 351 * ANSI emulation wrappers
 352 */
 353
 354void winansi_init(void);
 355HANDLE winansi_get_osfhandle(int fd);
 356
 357/*
 358 * git specific compatibility
 359 */
 360
 361#define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
 362#define is_dir_sep(c) ((c) == '/' || (c) == '\\')
 363static inline char *mingw_find_last_dir_sep(const char *path)
 364{
 365        char *ret = NULL;
 366        for (; *path; ++path)
 367                if (is_dir_sep(*path))
 368                        ret = (char *)path;
 369        return ret;
 370}
 371#define find_last_dir_sep mingw_find_last_dir_sep
 372int mingw_offset_1st_component(const char *path);
 373#define offset_1st_component mingw_offset_1st_component
 374#define PATH_SEP ';'
 375#define PRIuMAX "I64u"
 376#define PRId64 "I64d"
 377
 378void mingw_open_html(const char *path);
 379#define open_html mingw_open_html
 380
 381void mingw_mark_as_git_dir(const char *dir);
 382#define mark_as_git_dir mingw_mark_as_git_dir
 383
 384/**
 385 * Converts UTF-8 encoded string to UTF-16LE.
 386 *
 387 * To support repositories with legacy-encoded file names, invalid UTF-8 bytes
 388 * 0xa0 - 0xff are converted to corresponding printable Unicode chars \u00a0 -
 389 * \u00ff, and invalid UTF-8 bytes 0x80 - 0x9f (which would make non-printable
 390 * Unicode) are converted to hex-code.
 391 *
 392 * Lead-bytes not followed by an appropriate number of trail-bytes, over-long
 393 * encodings and 4-byte encodings > \u10ffff are detected as invalid UTF-8.
 394 *
 395 * Maximum space requirement for the target buffer is two wide chars per UTF-8
 396 * char (((strlen(utf) * 2) + 1) [* sizeof(wchar_t)]).
 397 *
 398 * The maximum space is needed only if the entire input string consists of
 399 * invalid UTF-8 bytes in range 0x80-0x9f, as per the following table:
 400 *
 401 *               |                   | UTF-8 | UTF-16 |
 402 *   Code point  |  UTF-8 sequence   | bytes | words  | ratio
 403 * --------------+-------------------+-------+--------+-------
 404 * 000000-00007f | 0-7f              |   1   |   1    |  1
 405 * 000080-0007ff | c2-df + 80-bf     |   2   |   1    |  0.5
 406 * 000800-00ffff | e0-ef + 2 * 80-bf |   3   |   1    |  0.33
 407 * 010000-10ffff | f0-f4 + 3 * 80-bf |   4   |  2 (a) |  0.5
 408 * invalid       | 80-9f             |   1   |  2 (b) |  2
 409 * invalid       | a0-ff             |   1   |   1    |  1
 410 *
 411 * (a) encoded as UTF-16 surrogate pair
 412 * (b) encoded as two hex digits
 413 *
 414 * Note that, while the UTF-8 encoding scheme can be extended to 5-byte, 6-byte
 415 * or even indefinite-byte sequences, the largest valid code point \u10ffff
 416 * encodes as only 4 UTF-8 bytes.
 417 *
 418 * Parameters:
 419 * wcs: wide char target buffer
 420 * utf: string to convert
 421 * wcslen: size of target buffer (in wchar_t's)
 422 * utflen: size of string to convert, or -1 if 0-terminated
 423 *
 424 * Returns:
 425 * length of converted string (_wcslen(wcs)), or -1 on failure
 426 *
 427 * Errors:
 428 * EINVAL: one of the input parameters is invalid (e.g. NULL)
 429 * ERANGE: the output buffer is too small
 430 */
 431int xutftowcsn(wchar_t *wcs, const char *utf, size_t wcslen, int utflen);
 432
 433/**
 434 * Simplified variant of xutftowcsn, assumes input string is \0-terminated.
 435 */
 436static inline int xutftowcs(wchar_t *wcs, const char *utf, size_t wcslen)
 437{
 438        return xutftowcsn(wcs, utf, wcslen, -1);
 439}
 440
 441/**
 442 * Simplified file system specific variant of xutftowcsn, assumes output
 443 * buffer size is MAX_PATH wide chars and input string is \0-terminated,
 444 * fails with ENAMETOOLONG if input string is too long.
 445 */
 446static inline int xutftowcs_path(wchar_t *wcs, const char *utf)
 447{
 448        int result = xutftowcsn(wcs, utf, MAX_PATH, -1);
 449        if (result < 0 && errno == ERANGE)
 450                errno = ENAMETOOLONG;
 451        return result;
 452}
 453
 454/**
 455 * Converts UTF-16LE encoded string to UTF-8.
 456 *
 457 * Maximum space requirement for the target buffer is three UTF-8 chars per
 458 * wide char ((_wcslen(wcs) * 3) + 1).
 459 *
 460 * The maximum space is needed only if the entire input string consists of
 461 * UTF-16 words in range 0x0800-0xd7ff or 0xe000-0xffff (i.e. \u0800-\uffff
 462 * modulo surrogate pairs), as per the following table:
 463 *
 464 *               |                       | UTF-16 | UTF-8 |
 465 *   Code point  |  UTF-16 sequence      | words  | bytes | ratio
 466 * --------------+-----------------------+--------+-------+-------
 467 * 000000-00007f | 0000-007f             |   1    |   1   |  1
 468 * 000080-0007ff | 0080-07ff             |   1    |   2   |  2
 469 * 000800-00ffff | 0800-d7ff / e000-ffff |   1    |   3   |  3
 470 * 010000-10ffff | d800-dbff + dc00-dfff |   2    |   4   |  2
 471 *
 472 * Note that invalid code points > 10ffff cannot be represented in UTF-16.
 473 *
 474 * Parameters:
 475 * utf: target buffer
 476 * wcs: wide string to convert
 477 * utflen: size of target buffer
 478 *
 479 * Returns:
 480 * length of converted string, or -1 on failure
 481 *
 482 * Errors:
 483 * EINVAL: one of the input parameters is invalid (e.g. NULL)
 484 * ERANGE: the output buffer is too small
 485 */
 486int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen);
 487
 488/*
 489 * A critical section used in the implementation of the spawn
 490 * functions (mingw_spawnv[p]e()) and waitpid(). Intialised in
 491 * the replacement main() macro below.
 492 */
 493extern CRITICAL_SECTION pinfo_cs;
 494
 495/*
 496 * A replacement of main() that adds win32 specific initialization.
 497 */
 498
 499void mingw_startup();
 500#define main(c,v) dummy_decl_mingw_main(); \
 501static int mingw_main(c,v); \
 502int main(int argc, char **argv) \
 503{ \
 504        mingw_startup(); \
 505        return mingw_main(__argc, (void *)__argv); \
 506} \
 507static int mingw_main(c,v)
 508
 509/*
 510 * Used by Pthread API implementation for Windows
 511 */
 512extern int err_win_to_posix(DWORD winerr);