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 #define hstrerror strerror
  10
  11 #define S_IFLNK    0120000 /* Symbolic link */
  12 #define S_ISLNK(x) (((x) & S_IFMT) == S_IFLNK)
  13 #define S_ISSOCK(x) 0
  14 #define S_IRGRP 0
  15 #define S_IWGRP 0
  16 #define S_IXGRP 0
  17 #define S_ISGID 0
  18 #define S_IROTH 0
  19 #define S_IXOTH 0
  20
  21 #define WIFEXITED(x) 1
  22 #define WIFSIGNALED(x) 0
  23 #define WEXITSTATUS(x) ((x) & 0xff)
  24 #define WTERMSIG(x) SIGTERM
  25
  26 #define SIGHUP 1
  27 #define SIGQUIT 3
  28 #define SIGKILL 9
  29 #define SIGPIPE 13
  30 #define SIGALRM 14
  31 #define SIGCHLD 17
  32
  33 #define F_GETFD 1
  34 #define F_SETFD 2
  35 #define FD_CLOEXEC 0x1
  36
  37 struct passwd {
  38         char *pw_name;
  39         char *pw_gecos;
  40         char *pw_dir;
  41 };
  42
  43 extern char *getpass(const char *prompt);
  44
  45 #ifndef POLLIN
  46 struct pollfd {
  47         int fd;           /* file descriptor */
  48         short events;     /* requested events */
  49         short revents;    /* returned events */
  50 };
  51 #define POLLIN 1
  52 #define POLLHUP 2
  53 #endif
  54
  55 typedef void (__cdecl *sig_handler_t)(int);
  56 struct sigaction {
  57         sig_handler_t sa_handler;
  58         unsigned sa_flags;
  59 };
  60 #define sigemptyset(x) (void)0
  61 #define SA_RESTART 0
  62
  63 struct itimerval {
  64         struct timeval it_value, it_interval;
  65 };
  66 #define ITIMER_REAL 0
  67
  68 /*
  69  * trivial stubs
  70  */
  71
  72 static inline int readlink(const char *path, char *buf, size_t bufsiz)
  73 { errno = ENOSYS; return -1; }
  74 static inline int symlink(const char *oldpath, const char *newpath)
  75 { errno = ENOSYS; return -1; }
  76 static inline int fchmod(int fildes, mode_t mode)
  77 { errno = ENOSYS; return -1; }
  78 static inline int fork(void)
  79 { errno = ENOSYS; return -1; }
  80 static inline unsigned int alarm(unsigned int seconds)
  81 { return 0; }
  82 static inline int fsync(int fd)
  83 { return _commit(fd); }
  84 pid_t getppid(void);
  85 static inline void sync(void)
  86 {}
  87 static inline int getuid()
  88 { return 1; }
  89 static inline struct passwd *getpwnam(const char *name)
  90 { return NULL; }
  91 static inline int fcntl(int fd, int cmd, ...)
  92 {
  93         if (cmd == F_GETFD || cmd == F_SETFD)
  94                 return 0;
  95         errno = EINVAL;
  96         return -1;
  97 }
  98 /* bash cannot reliably detect negative return codes as failure */
  99 #define exit(code) exit((code) & 0xff)
 100
 101 /*
 102  * simple adaptors
 103  */
 104
 105 static inline int mingw_mkdir(const char *path, int mode)
 106 {
 107         return mkdir(path);
 108 }
 109 #define mkdir mingw_mkdir
 110
 111 static inline int mingw_unlink(const char *pathname)
 112 {
 113         /* read-only files cannot be removed */
 114         chmod(pathname, 0666);
 115         return unlink(pathname);
 116 }
 117 #define unlink mingw_unlink
 118
 119 static inline int waitpid(pid_t pid, int *status, unsigned options)
 120 {
 121         if (options == 0)
 122                 return _cwait(status, pid, 0);
 123         errno = EINVAL;
 124         return -1;
 125 }
 126
 127 #ifndef NO_OPENSSL
 128 #include <openssl/ssl.h>
 129 static inline int mingw_SSL_set_fd(SSL *ssl, int fd)
 130 {
 131         return SSL_set_fd(ssl, _get_osfhandle(fd));
 132 }
 133 #define SSL_set_fd mingw_SSL_set_fd
 134
 135 static inline int mingw_SSL_set_rfd(SSL *ssl, int fd)
 136 {
 137         return SSL_set_rfd(ssl, _get_osfhandle(fd));
 138 }
 139 #define SSL_set_rfd mingw_SSL_set_rfd
 140
 141 static inline int mingw_SSL_set_wfd(SSL *ssl, int fd)
 142 {
 143         return SSL_set_wfd(ssl, _get_osfhandle(fd));
 144 }
 145 #define SSL_set_wfd mingw_SSL_set_wfd
 146 #endif
 147
 148 /*
 149  * implementations of missing functions
 150  */
 151
 152 int pipe(int filedes[2]);
 153 unsigned int sleep (unsigned int seconds);
 154 int mkstemp(char *template);
 155 int gettimeofday(struct timeval *tv, void *tz);
 156 int poll(struct pollfd *ufds, unsigned int nfds, int timeout);
 157 struct tm *gmtime_r(const time_t *timep, struct tm *result);
 158 struct tm *localtime_r(const time_t *timep, struct tm *result);
 159 int getpagesize(void);  /* defined in MinGW's libgcc.a */
 160 struct passwd *getpwuid(int uid);
 161 int setitimer(int type, struct itimerval *in, struct itimerval *out);
 162 int sigaction(int sig, struct sigaction *in, struct sigaction *out);
 163 int link(const char *oldpath, const char *newpath);
 164
 165 /*
 166  * replacements of existing functions
 167  */
 168
 169 int mingw_open (const char *filename, int oflags, ...);
 170 #define open mingw_open
 171
 172 ssize_t mingw_write(int fd, const void *buf, size_t count);
 173 #define write mingw_write
 174
 175 FILE *mingw_fopen (const char *filename, const char *otype);
 176 #define fopen mingw_fopen
 177
 178 FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream);
 179 #define freopen mingw_freopen
 180
 181 char *mingw_getcwd(char *pointer, int len);
 182 #define getcwd mingw_getcwd
 183
 184 char *mingw_getenv(const char *name);
 185 #define getenv mingw_getenv
 186
 187 struct hostent *mingw_gethostbyname(const char *host);
 188 #define gethostbyname mingw_gethostbyname
 189
 190 void mingw_freeaddrinfo(struct addrinfo *res);
 191 #define freeaddrinfo mingw_freeaddrinfo
 192
 193 int mingw_getaddrinfo(const char *node, const char *service,
 194                       const struct addrinfo *hints, struct addrinfo **res);
 195 #define getaddrinfo mingw_getaddrinfo
 196
 197 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
 198                       char *host, DWORD hostlen, char *serv, DWORD servlen,
 199                       int flags);
 200 #define getnameinfo mingw_getnameinfo
 201
 202 int mingw_socket(int domain, int type, int protocol);
 203 #define socket mingw_socket
 204
 205 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 206 #define connect mingw_connect
 207
 208 int mingw_rename(const char*, const char*);
 209 #define rename mingw_rename
 210
 211 #if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
 212 int mingw_getpagesize(void);
 213 #define getpagesize mingw_getpagesize
 214 #endif
 215
 216 /* Use mingw_lstat() instead of lstat()/stat() and
 217  * mingw_fstat() instead of fstat() on Windows.
 218  */
 219 #define off_t off64_t
 220 #define lseek _lseeki64
 221 #ifndef ALREADY_DECLARED_STAT_FUNCS
 222 #define stat _stati64
 223 int mingw_lstat(const char *file_name, struct stat *buf);
 224 int mingw_fstat(int fd, struct stat *buf);
 225 #define fstat mingw_fstat
 226 #define lstat mingw_lstat
 227 #define _stati64(x,y) mingw_lstat(x,y)
 228 #endif
 229
 230 int mingw_utime(const char *file_name, const struct utimbuf *times);
 231 #define utime mingw_utime
 232
 233 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
 234                      const char *dir,
 235                      int fhin, int fhout, int fherr);
 236 void mingw_execvp(const char *cmd, char *const *argv);
 237 #define execvp mingw_execvp
 238
 239 static inline unsigned int git_ntohl(unsigned int x)
 240 { return (unsigned int)ntohl(x); }
 241 #define ntohl git_ntohl
 242
 243 sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 244 #define signal mingw_signal
 245
 246 /*
 247  * ANSI emulation wrappers
 248  */
 249
 250 int winansi_fputs(const char *str, FILE *stream);
 251 int winansi_printf(const char *format, ...) __attribute__((format (printf, 1, 2)));
 252 int winansi_fprintf(FILE *stream, const char *format, ...) __attribute__((format (printf, 2, 3)));
 253 #define fputs winansi_fputs
 254 #define printf(...) winansi_printf(__VA_ARGS__)
 255 #define fprintf(...) winansi_fprintf(__VA_ARGS__)
 256
 257 /*
 258  * git specific compatibility
 259  */
 260
 261 #define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
 262 #define is_dir_sep(c) ((c) == '/' || (c) == '\\')
 263 #define PATH_SEP ';'
 264 #define PRIuMAX "I64u"
 265
 266 void mingw_open_html(const char *path);
 267 #define open_html mingw_open_html
 268
 269 /*
 270  * helpers
 271  */
 272
 273 char **make_augmented_environ(const char *const *vars);
 274 void free_environ(char **env);
 275
 276 /*
 277  * A replacement of main() that ensures that argv[0] has a path
 278  * and that default fmode and std(in|out|err) are in binary mode
 279  */
 280
 281 #define main(c,v) dummy_decl_mingw_main(); \
 282 static int mingw_main(); \
 283 int main(int argc, const char **argv) \
 284 { \
 285         _fmode = _O_BINARY; \
 286         _setmode(_fileno(stdin), _O_BINARY); \
 287         _setmode(_fileno(stdout), _O_BINARY); \
 288         _setmode(_fileno(stderr), _O_BINARY); \
 289         argv[0] = xstrdup(_pgmptr); \
 290         return mingw_main(argc, argv); \
 291 } \
 292 static int mingw_main(c,v)
 293
 294 #ifndef NO_MINGW_REPLACE_READDIR
 295 /*
 296  * A replacement of readdir, to ensure that it reads the file type at
 297  * the same time. This avoid extra unneeded lstats in git on MinGW
 298  */
 299 #undef DT_UNKNOWN
 300 #undef DT_DIR
 301 #undef DT_REG
 302 #undef DT_LNK
 303 #define DT_UNKNOWN      0
 304 #define DT_DIR          1
 305 #define DT_REG          2
 306 #define DT_LNK          3
 307
 308 struct mingw_dirent
 309 {
 310         long            d_ino;                  /* Always zero. */
 311         union {
 312                 unsigned short  d_reclen;       /* Always zero. */
 313                 unsigned char   d_type;         /* Reimplementation adds this */
 314         };
 315         unsigned short  d_namlen;               /* Length of name in d_name. */
 316         char            d_name[FILENAME_MAX];   /* File name. */
 317 };
 318 #define dirent mingw_dirent
 319 #define readdir(x) mingw_readdir(x)
 320 struct dirent *mingw_readdir(DIR *dir);
 321 #endif // !NO_MINGW_REPLACE_READDIR
 322
 323 /*
 324  * Used by Pthread API implementation for Windows
 325  */
 326 extern int err_win_to_posix(DWORD winerr);