Andrew's git / gitweb.git / compat/mingw.h
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compat / mingw.hon commit Merge branch 'nd/stop-setenv-work-tree' (d82d093)
   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
 213ssize_t mingw_write(int fd, const void *buf, size_t len);
 214#define write mingw_write
 215
 216int mingw_access(const char *filename, int mode);
 217#undef access
 218#define access mingw_access
 219
 220int mingw_chdir(const char *dirname);
 221#define chdir mingw_chdir
 222
 223int mingw_chmod(const char *filename, int mode);
 224#define chmod mingw_chmod
 225
 226char *mingw_mktemp(char *template);
 227#define mktemp mingw_mktemp
 228
 229char *mingw_getcwd(char *pointer, int len);
 230#define getcwd mingw_getcwd
 231
 232char *mingw_getenv(const char *name);
 233#define getenv mingw_getenv
 234int mingw_putenv(const char *namevalue);
 235#define putenv mingw_putenv
 236#define unsetenv mingw_putenv
 237
 238int mingw_gethostname(char *host, int namelen);
 239#define gethostname mingw_gethostname
 240
 241struct hostent *mingw_gethostbyname(const char *host);
 242#define gethostbyname mingw_gethostbyname
 243
 244void mingw_freeaddrinfo(struct addrinfo *res);
 245#define freeaddrinfo mingw_freeaddrinfo
 246
 247int mingw_getaddrinfo(const char *node, const char *service,
 248                      const struct addrinfo *hints, struct addrinfo **res);
 249#define getaddrinfo mingw_getaddrinfo
 250
 251int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
 252                      char *host, DWORD hostlen, char *serv, DWORD servlen,
 253                      int flags);
 254#define getnameinfo mingw_getnameinfo
 255
 256int mingw_socket(int domain, int type, int protocol);
 257#define socket mingw_socket
 258
 259int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 260#define connect mingw_connect
 261
 262int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz);
 263#define bind mingw_bind
 264
 265int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen);
 266#define setsockopt mingw_setsockopt
 267
 268int mingw_shutdown(int sockfd, int how);
 269#define shutdown mingw_shutdown
 270
 271int mingw_listen(int sockfd, int backlog);
 272#define listen mingw_listen
 273
 274int mingw_accept(int sockfd, struct sockaddr *sa, socklen_t *sz);
 275#define accept mingw_accept
 276
 277int mingw_rename(const char*, const char*);
 278#define rename mingw_rename
 279
 280#if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
 281int mingw_getpagesize(void);
 282#define getpagesize mingw_getpagesize
 283#endif
 284
 285struct rlimit {
 286        unsigned int rlim_cur;
 287};
 288#define RLIMIT_NOFILE 0
 289
 290static inline int getrlimit(int resource, struct rlimit *rlp)
 291{
 292        if (resource != RLIMIT_NOFILE) {
 293                errno = EINVAL;
 294                return -1;
 295        }
 296
 297        rlp->rlim_cur = 2048;
 298        return 0;
 299}
 300
 301/*
 302 * Use mingw specific stat()/lstat()/fstat() implementations on Windows.
 303 */
 304#define off_t off64_t
 305#define lseek _lseeki64
 306
 307/* use struct stat with 64 bit st_size */
 308#ifdef stat
 309#undef stat
 310#endif
 311#define stat _stati64
 312int mingw_lstat(const char *file_name, struct stat *buf);
 313int mingw_stat(const char *file_name, struct stat *buf);
 314int mingw_fstat(int fd, struct stat *buf);
 315#ifdef fstat
 316#undef fstat
 317#endif
 318#define fstat mingw_fstat
 319#ifdef lstat
 320#undef lstat
 321#endif
 322#define lstat mingw_lstat
 323
 324#ifndef _stati64
 325# define _stati64(x,y) mingw_stat(x,y)
 326#elif defined (_USE_32BIT_TIME_T)
 327# define _stat32i64(x,y) mingw_stat(x,y)
 328#else
 329# define _stat64(x,y) mingw_stat(x,y)
 330#endif
 331
 332int mingw_utime(const char *file_name, const struct utimbuf *times);
 333#define utime mingw_utime
 334
 335pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
 336                     const char *dir,
 337                     int fhin, int fhout, int fherr);
 338int mingw_execvp(const char *cmd, char *const *argv);
 339#define execvp mingw_execvp
 340int mingw_execv(const char *cmd, char *const *argv);
 341#define execv mingw_execv
 342
 343static inline unsigned int git_ntohl(unsigned int x)
 344{ return (unsigned int)ntohl(x); }
 345#define ntohl git_ntohl
 346
 347sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 348#define signal mingw_signal
 349
 350int mingw_raise(int sig);
 351#define raise mingw_raise
 352
 353/*
 354 * ANSI emulation wrappers
 355 */
 356
 357void winansi_init(void);
 358HANDLE winansi_get_osfhandle(int fd);
 359
 360/*
 361 * git specific compatibility
 362 */
 363
 364#define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
 365#define is_dir_sep(c) ((c) == '/' || (c) == '\\')
 366static inline char *mingw_find_last_dir_sep(const char *path)
 367{
 368        char *ret = NULL;
 369        for (; *path; ++path)
 370                if (is_dir_sep(*path))
 371                        ret = (char *)path;
 372        return ret;
 373}
 374#define find_last_dir_sep mingw_find_last_dir_sep
 375int mingw_offset_1st_component(const char *path);
 376#define offset_1st_component mingw_offset_1st_component
 377#define PATH_SEP ';'
 378#define PRIuMAX "I64u"
 379#define PRId64 "I64d"
 380
 381void mingw_open_html(const char *path);
 382#define open_html mingw_open_html
 383
 384void mingw_mark_as_git_dir(const char *dir);
 385#define mark_as_git_dir mingw_mark_as_git_dir
 386
 387/**
 388 * Converts UTF-8 encoded string to UTF-16LE.
 389 *
 390 * To support repositories with legacy-encoded file names, invalid UTF-8 bytes
 391 * 0xa0 - 0xff are converted to corresponding printable Unicode chars \u00a0 -
 392 * \u00ff, and invalid UTF-8 bytes 0x80 - 0x9f (which would make non-printable
 393 * Unicode) are converted to hex-code.
 394 *
 395 * Lead-bytes not followed by an appropriate number of trail-bytes, over-long
 396 * encodings and 4-byte encodings > \u10ffff are detected as invalid UTF-8.
 397 *
 398 * Maximum space requirement for the target buffer is two wide chars per UTF-8
 399 * char (((strlen(utf) * 2) + 1) [* sizeof(wchar_t)]).
 400 *
 401 * The maximum space is needed only if the entire input string consists of
 402 * invalid UTF-8 bytes in range 0x80-0x9f, as per the following table:
 403 *
 404 *               |                   | UTF-8 | UTF-16 |
 405 *   Code point  |  UTF-8 sequence   | bytes | words  | ratio
 406 * --------------+-------------------+-------+--------+-------
 407 * 000000-00007f | 0-7f              |   1   |   1    |  1
 408 * 000080-0007ff | c2-df + 80-bf     |   2   |   1    |  0.5
 409 * 000800-00ffff | e0-ef + 2 * 80-bf |   3   |   1    |  0.33
 410 * 010000-10ffff | f0-f4 + 3 * 80-bf |   4   |  2 (a) |  0.5
 411 * invalid       | 80-9f             |   1   |  2 (b) |  2
 412 * invalid       | a0-ff             |   1   |   1    |  1
 413 *
 414 * (a) encoded as UTF-16 surrogate pair
 415 * (b) encoded as two hex digits
 416 *
 417 * Note that, while the UTF-8 encoding scheme can be extended to 5-byte, 6-byte
 418 * or even indefinite-byte sequences, the largest valid code point \u10ffff
 419 * encodes as only 4 UTF-8 bytes.
 420 *
 421 * Parameters:
 422 * wcs: wide char target buffer
 423 * utf: string to convert
 424 * wcslen: size of target buffer (in wchar_t's)
 425 * utflen: size of string to convert, or -1 if 0-terminated
 426 *
 427 * Returns:
 428 * length of converted string (_wcslen(wcs)), or -1 on failure
 429 *
 430 * Errors:
 431 * EINVAL: one of the input parameters is invalid (e.g. NULL)
 432 * ERANGE: the output buffer is too small
 433 */
 434int xutftowcsn(wchar_t *wcs, const char *utf, size_t wcslen, int utflen);
 435
 436/**
 437 * Simplified variant of xutftowcsn, assumes input string is \0-terminated.
 438 */
 439static inline int xutftowcs(wchar_t *wcs, const char *utf, size_t wcslen)
 440{
 441        return xutftowcsn(wcs, utf, wcslen, -1);
 442}
 443
 444/**
 445 * Simplified file system specific variant of xutftowcsn, assumes output
 446 * buffer size is MAX_PATH wide chars and input string is \0-terminated,
 447 * fails with ENAMETOOLONG if input string is too long.
 448 */
 449static inline int xutftowcs_path(wchar_t *wcs, const char *utf)
 450{
 451        int result = xutftowcsn(wcs, utf, MAX_PATH, -1);
 452        if (result < 0 && errno == ERANGE)
 453                errno = ENAMETOOLONG;
 454        return result;
 455}
 456
 457/**
 458 * Converts UTF-16LE encoded string to UTF-8.
 459 *
 460 * Maximum space requirement for the target buffer is three UTF-8 chars per
 461 * wide char ((_wcslen(wcs) * 3) + 1).
 462 *
 463 * The maximum space is needed only if the entire input string consists of
 464 * UTF-16 words in range 0x0800-0xd7ff or 0xe000-0xffff (i.e. \u0800-\uffff
 465 * modulo surrogate pairs), as per the following table:
 466 *
 467 *               |                       | UTF-16 | UTF-8 |
 468 *   Code point  |  UTF-16 sequence      | words  | bytes | ratio
 469 * --------------+-----------------------+--------+-------+-------
 470 * 000000-00007f | 0000-007f             |   1    |   1   |  1
 471 * 000080-0007ff | 0080-07ff             |   1    |   2   |  2
 472 * 000800-00ffff | 0800-d7ff / e000-ffff |   1    |   3   |  3
 473 * 010000-10ffff | d800-dbff + dc00-dfff |   2    |   4   |  2
 474 *
 475 * Note that invalid code points > 10ffff cannot be represented in UTF-16.
 476 *
 477 * Parameters:
 478 * utf: target buffer
 479 * wcs: wide string to convert
 480 * utflen: size of target buffer
 481 *
 482 * Returns:
 483 * length of converted string, or -1 on failure
 484 *
 485 * Errors:
 486 * EINVAL: one of the input parameters is invalid (e.g. NULL)
 487 * ERANGE: the output buffer is too small
 488 */
 489int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen);
 490
 491/*
 492 * A critical section used in the implementation of the spawn
 493 * functions (mingw_spawnv[p]e()) and waitpid(). Intialised in
 494 * the replacement main() macro below.
 495 */
 496extern CRITICAL_SECTION pinfo_cs;
 497
 498/*
 499 * A replacement of main() that adds win32 specific initialization.
 500 */
 501
 502void mingw_startup();
 503#define main(c,v) dummy_decl_mingw_main(); \
 504static int mingw_main(c,v); \
 505int main(int argc, char **argv) \
 506{ \
 507        mingw_startup(); \
 508        return mingw_main(__argc, (void *)__argv); \
 509} \
 510static int mingw_main(c,v)
 511
 512/*
 513 * Used by Pthread API implementation for Windows
 514 */
 515extern int err_win_to_posix(DWORD winerr);