compat/mingw.h

   1 #include <winsock2.h>
   2 #include <ws2tcpip.h>
   3
   4 /*
   5  * things that are not available in header files
   6  */
   7
   8 typedef int pid_t;
   9 typedef int uid_t;
  10 typedef 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 #define EWOULDBLOCK EAGAIN
  36 #define SHUT_WR SD_SEND
  37
  38 #define SIGHUP 1
  39 #define SIGQUIT 3
  40 #define SIGKILL 9
  41 #define SIGPIPE 13
  42 #define SIGALRM 14
  43 #define SIGCHLD 17
  44
  45 #define F_GETFD 1
  46 #define F_SETFD 2
  47 #define FD_CLOEXEC 0x1
  48
  49 #define EAFNOSUPPORT WSAEAFNOSUPPORT
  50 #define ECONNABORTED WSAECONNABORTED
  51
  52 struct passwd {
  53         char *pw_name;
  54         char *pw_gecos;
  55         char *pw_dir;
  56 };
  57
  58 extern char *getpass(const char *prompt);
  59
  60 typedef void (__cdecl *sig_handler_t)(int);
  61 struct sigaction {
  62         sig_handler_t sa_handler;
  63         unsigned sa_flags;
  64 };
  65 #define sigemptyset(x) (void)0
  66 #define SA_RESTART 0
  67
  68 struct itimerval {
  69         struct timeval it_value, it_interval;
  70 };
  71 #define ITIMER_REAL 0
  72
  73 /*
  74  * sanitize preprocessor namespace polluted by Windows headers defining
  75  * macros which collide with git local versions
  76  */
  77 #undef HELP_COMMAND /* from winuser.h */
  78
  79 /*
  80  * trivial stubs
  81  */
  82
  83 static inline int readlink(const char *path, char *buf, size_t bufsiz)
  84 { errno = ENOSYS; return -1; }
  85 static inline int symlink(const char *oldpath, const char *newpath)
  86 { errno = ENOSYS; return -1; }
  87 static inline int fchmod(int fildes, mode_t mode)
  88 { errno = ENOSYS; return -1; }
  89 static inline pid_t fork(void)
  90 { errno = ENOSYS; return -1; }
  91 static inline unsigned int alarm(unsigned int seconds)
  92 { return 0; }
  93 static inline int fsync(int fd)
  94 { return _commit(fd); }
  95 static inline pid_t getppid(void)
  96 { return 1; }
  97 static inline void sync(void)
  98 {}
  99 static inline uid_t getuid(void)
 100 { return 1; }
 101 static inline struct passwd *getpwnam(const char *name)
 102 { return NULL; }
 103 static inline int fcntl(int fd, int cmd, ...)
 104 {
 105         if (cmd == F_GETFD || cmd == F_SETFD)
 106                 return 0;
 107         errno = EINVAL;
 108         return -1;
 109 }
 110 /* bash cannot reliably detect negative return codes as failure */
 111 #define exit(code) exit((code) & 0xff)
 112
 113 /*
 114  * simple adaptors
 115  */
 116
 117 int mingw_mkdir(const char *path, int mode);
 118 #define mkdir mingw_mkdir
 119
 120 #define WNOHANG 1
 121 pid_t waitpid(pid_t pid, int *status, int options);
 122
 123 #define kill mingw_kill
 124 int mingw_kill(pid_t pid, int sig);
 125
 126 #ifndef NO_OPENSSL
 127 #include <openssl/ssl.h>
 128 static inline int mingw_SSL_set_fd(SSL *ssl, int fd)
 129 {
 130         return SSL_set_fd(ssl, _get_osfhandle(fd));
 131 }
 132 #define SSL_set_fd mingw_SSL_set_fd
 133
 134 static inline int mingw_SSL_set_rfd(SSL *ssl, int fd)
 135 {
 136         return SSL_set_rfd(ssl, _get_osfhandle(fd));
 137 }
 138 #define SSL_set_rfd mingw_SSL_set_rfd
 139
 140 static inline int mingw_SSL_set_wfd(SSL *ssl, int fd)
 141 {
 142         return SSL_set_wfd(ssl, _get_osfhandle(fd));
 143 }
 144 #define SSL_set_wfd mingw_SSL_set_wfd
 145 #endif
 146
 147 /*
 148  * implementations of missing functions
 149  */
 150
 151 int pipe(int filedes[2]);
 152 unsigned int sleep (unsigned int seconds);
 153 int mkstemp(char *template);
 154 int gettimeofday(struct timeval *tv, void *tz);
 155 struct tm *gmtime_r(const time_t *timep, struct tm *result);
 156 struct tm *localtime_r(const time_t *timep, struct tm *result);
 157 int getpagesize(void);  /* defined in MinGW's libgcc.a */
 158 struct passwd *getpwuid(uid_t uid);
 159 int setitimer(int type, struct itimerval *in, struct itimerval *out);
 160 int sigaction(int sig, struct sigaction *in, struct sigaction *out);
 161 int link(const char *oldpath, const char *newpath);
 162
 163 /*
 164  * replacements of existing functions
 165  */
 166
 167 int mingw_unlink(const char *pathname);
 168 #define unlink mingw_unlink
 169
 170 int mingw_rmdir(const char *path);
 171 #define rmdir mingw_rmdir
 172
 173 int mingw_open (const char *filename, int oflags, ...);
 174 #define open mingw_open
 175
 176 ssize_t mingw_write(int fd, const void *buf, size_t count);
 177 #define write mingw_write
 178
 179 FILE *mingw_fopen (const char *filename, const char *otype);
 180 #define fopen mingw_fopen
 181
 182 FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream);
 183 #define freopen mingw_freopen
 184
 185 char *mingw_getcwd(char *pointer, int len);
 186 #define getcwd mingw_getcwd
 187
 188 char *mingw_getenv(const char *name);
 189 #define getenv mingw_getenv
 190
 191 int mingw_gethostname(char *host, int namelen);
 192 #define gethostname mingw_gethostname
 193
 194 struct hostent *mingw_gethostbyname(const char *host);
 195 #define gethostbyname mingw_gethostbyname
 196
 197 void mingw_freeaddrinfo(struct addrinfo *res);
 198 #define freeaddrinfo mingw_freeaddrinfo
 199
 200 int mingw_getaddrinfo(const char *node, const char *service,
 201                       const struct addrinfo *hints, struct addrinfo **res);
 202 #define getaddrinfo mingw_getaddrinfo
 203
 204 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
 205                       char *host, DWORD hostlen, char *serv, DWORD servlen,
 206                       int flags);
 207 #define getnameinfo mingw_getnameinfo
 208
 209 int mingw_socket(int domain, int type, int protocol);
 210 #define socket mingw_socket
 211
 212 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 213 #define connect mingw_connect
 214
 215 int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz);
 216 #define bind mingw_bind
 217
 218 int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen);
 219 #define setsockopt mingw_setsockopt
 220
 221 int mingw_shutdown(int sockfd, int how);
 222 #define shutdown mingw_shutdown
 223
 224 int mingw_listen(int sockfd, int backlog);
 225 #define listen mingw_listen
 226
 227 int mingw_accept(int sockfd, struct sockaddr *sa, socklen_t *sz);
 228 #define accept mingw_accept
 229
 230 int mingw_rename(const char*, const char*);
 231 #define rename mingw_rename
 232
 233 #if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
 234 int mingw_getpagesize(void);
 235 #define getpagesize mingw_getpagesize
 236 #endif
 237
 238 struct rlimit {
 239         unsigned int rlim_cur;
 240 };
 241 #define RLIMIT_NOFILE 0
 242
 243 static inline int getrlimit(int resource, struct rlimit *rlp)
 244 {
 245         if (resource != RLIMIT_NOFILE) {
 246                 errno = EINVAL;
 247                 return -1;
 248         }
 249
 250         rlp->rlim_cur = 2048;
 251         return 0;
 252 }
 253
 254 /* Use mingw_lstat() instead of lstat()/stat() and
 255  * mingw_fstat() instead of fstat() on Windows.
 256  */
 257 #define off_t off64_t
 258 #define lseek _lseeki64
 259 #ifndef ALREADY_DECLARED_STAT_FUNCS
 260 #define stat _stati64
 261 int mingw_lstat(const char *file_name, struct stat *buf);
 262 int mingw_stat(const char *file_name, struct stat *buf);
 263 int mingw_fstat(int fd, struct stat *buf);
 264 #define fstat mingw_fstat
 265 #define lstat mingw_lstat
 266 #define _stati64(x,y) mingw_stat(x,y)
 267 #endif
 268
 269 int mingw_utime(const char *file_name, const struct utimbuf *times);
 270 #define utime mingw_utime
 271
 272 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
 273                      const char *dir,
 274                      int fhin, int fhout, int fherr);
 275 int mingw_execvp(const char *cmd, char *const *argv);
 276 #define execvp mingw_execvp
 277 int mingw_execv(const char *cmd, char *const *argv);
 278 #define execv mingw_execv
 279
 280 static inline unsigned int git_ntohl(unsigned int x)
 281 { return (unsigned int)ntohl(x); }
 282 #define ntohl git_ntohl
 283
 284 sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 285 #define signal mingw_signal
 286
 287 /*
 288  * ANSI emulation wrappers
 289  */
 290
 291 void winansi_init(void);
 292 int winansi_isatty(int fd);
 293 HANDLE winansi_get_osfhandle(int fd);
 294 #define isatty winansi_isatty
 295
 296 /*
 297  * git specific compatibility
 298  */
 299
 300 #define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
 301 #define is_dir_sep(c) ((c) == '/' || (c) == '\\')
 302 static inline char *mingw_find_last_dir_sep(const char *path)
 303 {
 304         char *ret = NULL;
 305         for (; *path; ++path)
 306                 if (is_dir_sep(*path))
 307                         ret = (char *)path;
 308         return ret;
 309 }
 310 #define find_last_dir_sep mingw_find_last_dir_sep
 311 int mingw_offset_1st_component(const char *path);
 312 #define offset_1st_component mingw_offset_1st_component
 313 #define PATH_SEP ';'
 314 #define PRIuMAX "I64u"
 315
 316 void mingw_open_html(const char *path);
 317 #define open_html mingw_open_html
 318
 319 void mingw_mark_as_git_dir(const char *dir);
 320 #define mark_as_git_dir mingw_mark_as_git_dir
 321
 322 /*
 323  * helpers
 324  */
 325
 326 char **make_augmented_environ(const char *const *vars);
 327 void free_environ(char **env);
 328
 329 /**
 330  * Converts UTF-8 encoded string to UTF-16LE.
 331  *
 332  * To support repositories with legacy-encoded file names, invalid UTF-8 bytes
 333  * 0xa0 - 0xff are converted to corresponding printable Unicode chars \u00a0 -
 334  * \u00ff, and invalid UTF-8 bytes 0x80 - 0x9f (which would make non-printable
 335  * Unicode) are converted to hex-code.
 336  *
 337  * Lead-bytes not followed by an appropriate number of trail-bytes, over-long
 338  * encodings and 4-byte encodings > \u10ffff are detected as invalid UTF-8.
 339  *
 340  * Maximum space requirement for the target buffer is two wide chars per UTF-8
 341  * char (((strlen(utf) * 2) + 1) [* sizeof(wchar_t)]).
 342  *
 343  * The maximum space is needed only if the entire input string consists of
 344  * invalid UTF-8 bytes in range 0x80-0x9f, as per the following table:
 345  *
 346  *               |                   | UTF-8 | UTF-16 |
 347  *   Code point  |  UTF-8 sequence   | bytes | words  | ratio
 348  * --------------+-------------------+-------+--------+-------
 349  * 000000-00007f | 0-7f              |   1   |   1    |  1
 350  * 000080-0007ff | c2-df + 80-bf     |   2   |   1    |  0.5
 351  * 000800-00ffff | e0-ef + 2 * 80-bf |   3   |   1    |  0.33
 352  * 010000-10ffff | f0-f4 + 3 * 80-bf |   4   |  2 (a) |  0.5
 353  * invalid       | 80-9f             |   1   |  2 (b) |  2
 354  * invalid       | a0-ff             |   1   |   1    |  1
 355  *
 356  * (a) encoded as UTF-16 surrogate pair
 357  * (b) encoded as two hex digits
 358  *
 359  * Note that, while the UTF-8 encoding scheme can be extended to 5-byte, 6-byte
 360  * or even indefinite-byte sequences, the largest valid code point \u10ffff
 361  * encodes as only 4 UTF-8 bytes.
 362  *
 363  * Parameters:
 364  * wcs: wide char target buffer
 365  * utf: string to convert
 366  * wcslen: size of target buffer (in wchar_t's)
 367  * utflen: size of string to convert, or -1 if 0-terminated
 368  *
 369  * Returns:
 370  * length of converted string (_wcslen(wcs)), or -1 on failure
 371  *
 372  * Errors:
 373  * EINVAL: one of the input parameters is invalid (e.g. NULL)
 374  * ERANGE: the output buffer is too small
 375  */
 376 int xutftowcsn(wchar_t *wcs, const char *utf, size_t wcslen, int utflen);
 377
 378 /**
 379  * Simplified variant of xutftowcsn, assumes input string is \0-terminated.
 380  */
 381 static inline int xutftowcs(wchar_t *wcs, const char *utf, size_t wcslen)
 382 {
 383         return xutftowcsn(wcs, utf, wcslen, -1);
 384 }
 385
 386 /**
 387  * Simplified file system specific variant of xutftowcsn, assumes output
 388  * buffer size is MAX_PATH wide chars and input string is \0-terminated,
 389  * fails with ENAMETOOLONG if input string is too long.
 390  */
 391 static inline int xutftowcs_path(wchar_t *wcs, const char *utf)
 392 {
 393         int result = xutftowcsn(wcs, utf, MAX_PATH, -1);
 394         if (result < 0 && errno == ERANGE)
 395                 errno = ENAMETOOLONG;
 396         return result;
 397 }
 398
 399 /**
 400  * Converts UTF-16LE encoded string to UTF-8.
 401  *
 402  * Maximum space requirement for the target buffer is three UTF-8 chars per
 403  * wide char ((_wcslen(wcs) * 3) + 1).
 404  *
 405  * The maximum space is needed only if the entire input string consists of
 406  * UTF-16 words in range 0x0800-0xd7ff or 0xe000-0xffff (i.e. \u0800-\uffff
 407  * modulo surrogate pairs), as per the following table:
 408  *
 409  *               |                       | UTF-16 | UTF-8 |
 410  *   Code point  |  UTF-16 sequence      | words  | bytes | ratio
 411  * --------------+-----------------------+--------+-------+-------
 412  * 000000-00007f | 0000-007f             |   1    |   1   |  1
 413  * 000080-0007ff | 0080-07ff             |   1    |   2   |  2
 414  * 000800-00ffff | 0800-d7ff / e000-ffff |   1    |   3   |  3
 415  * 010000-10ffff | d800-dbff + dc00-dfff |   2    |   4   |  2
 416  *
 417  * Note that invalid code points > 10ffff cannot be represented in UTF-16.
 418  *
 419  * Parameters:
 420  * utf: target buffer
 421  * wcs: wide string to convert
 422  * utflen: size of target buffer
 423  *
 424  * Returns:
 425  * length of converted string, 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  */
 431 int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen);
 432
 433 /*
 434  * A replacement of main() that adds win32 specific initialization.
 435  */
 436
 437 void mingw_startup();
 438 #define main(c,v) dummy_decl_mingw_main(); \
 439 static int mingw_main(); \
 440 int main(int argc, const char **argv) \
 441 { \
 442         mingw_startup(); \
 443         return mingw_main(__argc, __argv); \
 444 } \
 445 static int mingw_main(c,v)
 446
 447 /*
 448  * Used by Pthread API implementation for Windows
 449  */
 450 extern int err_win_to_posix(DWORD winerr);
 451
 452 extern const char *get_windows_home_directory();
 453 #define get_home_directory() get_windows_home_directory()