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 #define hstrerror strerror
  11
  12 #define S_IFLNK    0120000 /* Symbolic link */
  13 #define S_ISLNK(x) (((x) & S_IFMT) == S_IFLNK)
  14 #define S_ISSOCK(x) 0
  15
  16 #ifndef _STAT_H_
  17 #define S_IRUSR 0
  18 #define S_IWUSR 0
  19 #define S_IXUSR 0
  20 #define S_IRWXU (S_IRUSR | S_IWUSR | S_IXUSR)
  21 #endif
  22 #define S_IRGRP 0
  23 #define S_IWGRP 0
  24 #define S_IXGRP 0
  25 #define S_IRWXG (S_IRGRP | S_IWGRP | S_IXGRP)
  26 #define S_IROTH 0
  27 #define S_IWOTH 0
  28 #define S_IXOTH 0
  29 #define S_IRWXO (S_IROTH | S_IWOTH | S_IXOTH)
  30 #define S_ISUID 0
  31 #define S_ISGID 0
  32 #define S_ISVTX 0
  33
  34 #define WIFEXITED(x) 1
  35 #define WIFSIGNALED(x) 0
  36 #define WEXITSTATUS(x) ((x) & 0xff)
  37 #define WTERMSIG(x) SIGTERM
  38
  39 #define SIGHUP 1
  40 #define SIGQUIT 3
  41 #define SIGKILL 9
  42 #define SIGPIPE 13
  43 #define SIGALRM 14
  44 #define SIGCHLD 17
  45
  46 #define F_GETFD 1
  47 #define F_SETFD 2
  48 #define FD_CLOEXEC 0x1
  49
  50 struct passwd {
  51         char *pw_name;
  52         char *pw_gecos;
  53         char *pw_dir;
  54 };
  55
  56 extern char *getpass(const char *prompt);
  57
  58 #ifndef POLLIN
  59 struct pollfd {
  60         int fd;           /* file descriptor */
  61         short events;     /* requested events */
  62         short revents;    /* returned events */
  63 };
  64 #define POLLIN 1
  65 #define POLLHUP 2
  66 #endif
  67
  68 typedef void (__cdecl *sig_handler_t)(int);
  69 struct sigaction {
  70         sig_handler_t sa_handler;
  71         unsigned sa_flags;
  72 };
  73 #define sigemptyset(x) (void)0
  74 #define SA_RESTART 0
  75
  76 struct itimerval {
  77         struct timeval it_value, it_interval;
  78 };
  79 #define ITIMER_REAL 0
  80
  81 /*
  82  * trivial stubs
  83  */
  84
  85 static inline int readlink(const char *path, char *buf, size_t bufsiz)
  86 { errno = ENOSYS; return -1; }
  87 static inline int symlink(const char *oldpath, const char *newpath)
  88 { errno = ENOSYS; return -1; }
  89 static inline int fchmod(int fildes, mode_t mode)
  90 { errno = ENOSYS; return -1; }
  91 static inline pid_t fork(void)
  92 { errno = ENOSYS; return -1; }
  93 static inline unsigned int alarm(unsigned int seconds)
  94 { return 0; }
  95 static inline int fsync(int fd)
  96 { return _commit(fd); }
  97 static inline pid_t getppid(void)
  98 { return 1; }
  99 static inline void sync(void)
 100 {}
 101 static inline uid_t getuid(void)
 102 { return 1; }
 103 static inline struct passwd *getpwnam(const char *name)
 104 { return NULL; }
 105 static inline int fcntl(int fd, int cmd, ...)
 106 {
 107         if (cmd == F_GETFD || cmd == F_SETFD)
 108                 return 0;
 109         errno = EINVAL;
 110         return -1;
 111 }
 112 /* bash cannot reliably detect negative return codes as failure */
 113 #define exit(code) exit((code) & 0xff)
 114
 115 /*
 116  * simple adaptors
 117  */
 118
 119 int mingw_mkdir(const char *path, int mode);
 120 #define mkdir mingw_mkdir
 121
 122 static inline int mingw_unlink(const char *pathname)
 123 {
 124         /* read-only files cannot be removed */
 125         chmod(pathname, 0666);
 126         return unlink(pathname);
 127 }
 128 #define unlink mingw_unlink
 129
 130 static inline pid_t waitpid(pid_t pid, int *status, unsigned options)
 131 {
 132         if (options == 0)
 133                 return _cwait(status, pid, 0);
 134         errno = EINVAL;
 135         return -1;
 136 }
 137
 138 #ifndef NO_OPENSSL
 139 #include <openssl/ssl.h>
 140 static inline int mingw_SSL_set_fd(SSL *ssl, int fd)
 141 {
 142         return SSL_set_fd(ssl, _get_osfhandle(fd));
 143 }
 144 #define SSL_set_fd mingw_SSL_set_fd
 145
 146 static inline int mingw_SSL_set_rfd(SSL *ssl, int fd)
 147 {
 148         return SSL_set_rfd(ssl, _get_osfhandle(fd));
 149 }
 150 #define SSL_set_rfd mingw_SSL_set_rfd
 151
 152 static inline int mingw_SSL_set_wfd(SSL *ssl, int fd)
 153 {
 154         return SSL_set_wfd(ssl, _get_osfhandle(fd));
 155 }
 156 #define SSL_set_wfd mingw_SSL_set_wfd
 157 #endif
 158
 159 /*
 160  * implementations of missing functions
 161  */
 162
 163 int pipe(int filedes[2]);
 164 unsigned int sleep (unsigned int seconds);
 165 int mkstemp(char *template);
 166 int gettimeofday(struct timeval *tv, void *tz);
 167 int poll(struct pollfd *ufds, unsigned int nfds, int timeout);
 168 struct tm *gmtime_r(const time_t *timep, struct tm *result);
 169 struct tm *localtime_r(const time_t *timep, struct tm *result);
 170 int getpagesize(void);  /* defined in MinGW's libgcc.a */
 171 struct passwd *getpwuid(uid_t uid);
 172 int setitimer(int type, struct itimerval *in, struct itimerval *out);
 173 int sigaction(int sig, struct sigaction *in, struct sigaction *out);
 174 int link(const char *oldpath, const char *newpath);
 175
 176 /*
 177  * replacements of existing functions
 178  */
 179
 180 int mingw_open (const char *filename, int oflags, ...);
 181 #define open mingw_open
 182
 183 ssize_t mingw_write(int fd, const void *buf, size_t count);
 184 #define write mingw_write
 185
 186 FILE *mingw_fopen (const char *filename, const char *otype);
 187 #define fopen mingw_fopen
 188
 189 FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream);
 190 #define freopen mingw_freopen
 191
 192 char *mingw_getcwd(char *pointer, int len);
 193 #define getcwd mingw_getcwd
 194
 195 char *mingw_getenv(const char *name);
 196 #define getenv mingw_getenv
 197
 198 struct hostent *mingw_gethostbyname(const char *host);
 199 #define gethostbyname mingw_gethostbyname
 200
 201 void mingw_freeaddrinfo(struct addrinfo *res);
 202 #define freeaddrinfo mingw_freeaddrinfo
 203
 204 int mingw_getaddrinfo(const char *node, const char *service,
 205                       const struct addrinfo *hints, struct addrinfo **res);
 206 #define getaddrinfo mingw_getaddrinfo
 207
 208 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
 209                       char *host, DWORD hostlen, char *serv, DWORD servlen,
 210                       int flags);
 211 #define getnameinfo mingw_getnameinfo
 212
 213 int mingw_socket(int domain, int type, int protocol);
 214 #define socket mingw_socket
 215
 216 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 217 #define connect mingw_connect
 218
 219 int mingw_rename(const char*, const char*);
 220 #define rename mingw_rename
 221
 222 #if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
 223 int mingw_getpagesize(void);
 224 #define getpagesize mingw_getpagesize
 225 #endif
 226
 227 /* Use mingw_lstat() instead of lstat()/stat() and
 228  * mingw_fstat() instead of fstat() on Windows.
 229  */
 230 #define off_t off64_t
 231 #define lseek _lseeki64
 232 #ifndef ALREADY_DECLARED_STAT_FUNCS
 233 #define stat _stati64
 234 int mingw_lstat(const char *file_name, struct stat *buf);
 235 int mingw_stat(const char *file_name, struct stat *buf);
 236 int mingw_fstat(int fd, struct stat *buf);
 237 #define fstat mingw_fstat
 238 #define lstat mingw_lstat
 239 #define _stati64(x,y) mingw_stat(x,y)
 240 #endif
 241
 242 int mingw_utime(const char *file_name, const struct utimbuf *times);
 243 #define utime mingw_utime
 244
 245 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
 246                      const char *dir,
 247                      int fhin, int fhout, int fherr);
 248 void mingw_execvp(const char *cmd, char *const *argv);
 249 #define execvp mingw_execvp
 250
 251 static inline unsigned int git_ntohl(unsigned int x)
 252 { return (unsigned int)ntohl(x); }
 253 #define ntohl git_ntohl
 254
 255 sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 256 #define signal mingw_signal
 257
 258 /*
 259  * ANSI emulation wrappers
 260  */
 261
 262 int winansi_fputs(const char *str, FILE *stream);
 263 int winansi_printf(const char *format, ...) __attribute__((format (printf, 1, 2)));
 264 int winansi_fprintf(FILE *stream, const char *format, ...) __attribute__((format (printf, 2, 3)));
 265 #define fputs winansi_fputs
 266 #define printf(...) winansi_printf(__VA_ARGS__)
 267 #define fprintf(...) winansi_fprintf(__VA_ARGS__)
 268
 269 /*
 270  * git specific compatibility
 271  */
 272
 273 #define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
 274 #define is_dir_sep(c) ((c) == '/' || (c) == '\\')
 275 #define PATH_SEP ';'
 276 #define PRIuMAX "I64u"
 277
 278 void mingw_open_html(const char *path);
 279 #define open_html mingw_open_html
 280
 281 void mingw_mark_as_git_dir(const char *dir);
 282 #define mark_as_git_dir mingw_mark_as_git_dir
 283
 284 /*
 285  * helpers
 286  */
 287
 288 char **make_augmented_environ(const char *const *vars);
 289 void free_environ(char **env);
 290
 291 /*
 292  * A replacement of main() that ensures that argv[0] has a path
 293  * and that default fmode and std(in|out|err) are in binary mode
 294  */
 295
 296 #define main(c,v) dummy_decl_mingw_main(); \
 297 static int mingw_main(); \
 298 int main(int argc, const char **argv) \
 299 { \
 300         _fmode = _O_BINARY; \
 301         _setmode(_fileno(stdin), _O_BINARY); \
 302         _setmode(_fileno(stdout), _O_BINARY); \
 303         _setmode(_fileno(stderr), _O_BINARY); \
 304         argv[0] = xstrdup(_pgmptr); \
 305         return mingw_main(argc, argv); \
 306 } \
 307 static int mingw_main(c,v)
 308
 309 #ifndef NO_MINGW_REPLACE_READDIR
 310 /*
 311  * A replacement of readdir, to ensure that it reads the file type at
 312  * the same time. This avoid extra unneeded lstats in git on MinGW
 313  */
 314 #undef DT_UNKNOWN
 315 #undef DT_DIR
 316 #undef DT_REG
 317 #undef DT_LNK
 318 #define DT_UNKNOWN      0
 319 #define DT_DIR          1
 320 #define DT_REG          2
 321 #define DT_LNK          3
 322
 323 struct mingw_dirent
 324 {
 325         long            d_ino;                  /* Always zero. */
 326         union {
 327                 unsigned short  d_reclen;       /* Always zero. */
 328                 unsigned char   d_type;         /* Reimplementation adds this */
 329         };
 330         unsigned short  d_namlen;               /* Length of name in d_name. */
 331         char            d_name[FILENAME_MAX];   /* File name. */
 332 };
 333 #define dirent mingw_dirent
 334 #define readdir(x) mingw_readdir(x)
 335 struct dirent *mingw_readdir(DIR *dir);
 336 #endif // !NO_MINGW_REPLACE_READDIR
 337
 338 /*
 339  * Used by Pthread API implementation for Windows
 340  */
 341 extern int err_win_to_posix(DWORD winerr);