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  * sanitize preprocessor namespace polluted by Windows headers defining
  83  * macros which collide with git local versions
  84  */
  85 #undef HELP_COMMAND /* from winuser.h */
  86
  87 /*
  88  * trivial stubs
  89  */
  90
  91 static inline int readlink(const char *path, char *buf, size_t bufsiz)
  92 { errno = ENOSYS; return -1; }
  93 static inline int symlink(const char *oldpath, const char *newpath)
  94 { errno = ENOSYS; return -1; }
  95 static inline int fchmod(int fildes, mode_t mode)
  96 { errno = ENOSYS; return -1; }
  97 static inline pid_t fork(void)
  98 { errno = ENOSYS; return -1; }
  99 static inline unsigned int alarm(unsigned int seconds)
 100 { return 0; }
 101 static inline int fsync(int fd)
 102 { return _commit(fd); }
 103 static inline pid_t getppid(void)
 104 { return 1; }
 105 static inline void sync(void)
 106 {}
 107 static inline uid_t getuid(void)
 108 { return 1; }
 109 static inline struct passwd *getpwnam(const char *name)
 110 { return NULL; }
 111 static inline int fcntl(int fd, int cmd, ...)
 112 {
 113         if (cmd == F_GETFD || cmd == F_SETFD)
 114                 return 0;
 115         errno = EINVAL;
 116         return -1;
 117 }
 118 /* bash cannot reliably detect negative return codes as failure */
 119 #define exit(code) exit((code) & 0xff)
 120
 121 /*
 122  * simple adaptors
 123  */
 124
 125 static inline int mingw_mkdir(const char *path, int mode)
 126 {
 127         return mkdir(path);
 128 }
 129 #define mkdir mingw_mkdir
 130
 131 static inline int mingw_unlink(const char *pathname)
 132 {
 133         /* read-only files cannot be removed */
 134         chmod(pathname, 0666);
 135         return unlink(pathname);
 136 }
 137 #define unlink mingw_unlink
 138
 139 static inline pid_t waitpid(pid_t pid, int *status, unsigned options)
 140 {
 141         if (options == 0)
 142                 return _cwait(status, pid, 0);
 143         errno = EINVAL;
 144         return -1;
 145 }
 146
 147 #ifndef NO_OPENSSL
 148 #include <openssl/ssl.h>
 149 static inline int mingw_SSL_set_fd(SSL *ssl, int fd)
 150 {
 151         return SSL_set_fd(ssl, _get_osfhandle(fd));
 152 }
 153 #define SSL_set_fd mingw_SSL_set_fd
 154
 155 static inline int mingw_SSL_set_rfd(SSL *ssl, int fd)
 156 {
 157         return SSL_set_rfd(ssl, _get_osfhandle(fd));
 158 }
 159 #define SSL_set_rfd mingw_SSL_set_rfd
 160
 161 static inline int mingw_SSL_set_wfd(SSL *ssl, int fd)
 162 {
 163         return SSL_set_wfd(ssl, _get_osfhandle(fd));
 164 }
 165 #define SSL_set_wfd mingw_SSL_set_wfd
 166 #endif
 167
 168 /*
 169  * implementations of missing functions
 170  */
 171
 172 int pipe(int filedes[2]);
 173 unsigned int sleep (unsigned int seconds);
 174 int mkstemp(char *template);
 175 int gettimeofday(struct timeval *tv, void *tz);
 176 int poll(struct pollfd *ufds, unsigned int nfds, int timeout);
 177 struct tm *gmtime_r(const time_t *timep, struct tm *result);
 178 struct tm *localtime_r(const time_t *timep, struct tm *result);
 179 int getpagesize(void);  /* defined in MinGW's libgcc.a */
 180 struct passwd *getpwuid(uid_t uid);
 181 int setitimer(int type, struct itimerval *in, struct itimerval *out);
 182 int sigaction(int sig, struct sigaction *in, struct sigaction *out);
 183 int link(const char *oldpath, const char *newpath);
 184
 185 /*
 186  * replacements of existing functions
 187  */
 188
 189 int mingw_open (const char *filename, int oflags, ...);
 190 #define open mingw_open
 191
 192 ssize_t mingw_write(int fd, const void *buf, size_t count);
 193 #define write mingw_write
 194
 195 FILE *mingw_fopen (const char *filename, const char *otype);
 196 #define fopen mingw_fopen
 197
 198 FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream);
 199 #define freopen mingw_freopen
 200
 201 char *mingw_getcwd(char *pointer, int len);
 202 #define getcwd mingw_getcwd
 203
 204 char *mingw_getenv(const char *name);
 205 #define getenv mingw_getenv
 206
 207 struct hostent *mingw_gethostbyname(const char *host);
 208 #define gethostbyname mingw_gethostbyname
 209
 210 void mingw_freeaddrinfo(struct addrinfo *res);
 211 #define freeaddrinfo mingw_freeaddrinfo
 212
 213 int mingw_getaddrinfo(const char *node, const char *service,
 214                       const struct addrinfo *hints, struct addrinfo **res);
 215 #define getaddrinfo mingw_getaddrinfo
 216
 217 int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
 218                       char *host, DWORD hostlen, char *serv, DWORD servlen,
 219                       int flags);
 220 #define getnameinfo mingw_getnameinfo
 221
 222 int mingw_socket(int domain, int type, int protocol);
 223 #define socket mingw_socket
 224
 225 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 226 #define connect mingw_connect
 227
 228 int mingw_rename(const char*, const char*);
 229 #define rename mingw_rename
 230
 231 #if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
 232 int mingw_getpagesize(void);
 233 #define getpagesize mingw_getpagesize
 234 #endif
 235
 236 /* Use mingw_lstat() instead of lstat()/stat() and
 237  * mingw_fstat() instead of fstat() on Windows.
 238  */
 239 #define off_t off64_t
 240 #define lseek _lseeki64
 241 #ifndef ALREADY_DECLARED_STAT_FUNCS
 242 #define stat _stati64
 243 int mingw_lstat(const char *file_name, struct stat *buf);
 244 int mingw_stat(const char *file_name, struct stat *buf);
 245 int mingw_fstat(int fd, struct stat *buf);
 246 #define fstat mingw_fstat
 247 #define lstat mingw_lstat
 248 #define _stati64(x,y) mingw_stat(x,y)
 249 #endif
 250
 251 int mingw_utime(const char *file_name, const struct utimbuf *times);
 252 #define utime mingw_utime
 253
 254 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
 255                      const char *dir,
 256                      int fhin, int fhout, int fherr);
 257 void mingw_execvp(const char *cmd, char *const *argv);
 258 #define execvp mingw_execvp
 259
 260 static inline unsigned int git_ntohl(unsigned int x)
 261 { return (unsigned int)ntohl(x); }
 262 #define ntohl git_ntohl
 263
 264 sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 265 #define signal mingw_signal
 266
 267 /*
 268  * ANSI emulation wrappers
 269  */
 270
 271 int winansi_fputs(const char *str, FILE *stream);
 272 int winansi_printf(const char *format, ...) __attribute__((format (printf, 1, 2)));
 273 int winansi_fprintf(FILE *stream, const char *format, ...) __attribute__((format (printf, 2, 3)));
 274 #define fputs winansi_fputs
 275 #define printf(...) winansi_printf(__VA_ARGS__)
 276 #define fprintf(...) winansi_fprintf(__VA_ARGS__)
 277
 278 /*
 279  * git specific compatibility
 280  */
 281
 282 #define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
 283 #define is_dir_sep(c) ((c) == '/' || (c) == '\\')
 284 #define PATH_SEP ';'
 285 #define PRIuMAX "I64u"
 286
 287 void mingw_open_html(const char *path);
 288 #define open_html mingw_open_html
 289
 290 /*
 291  * helpers
 292  */
 293
 294 char **make_augmented_environ(const char *const *vars);
 295 void free_environ(char **env);
 296
 297 /*
 298  * A replacement of main() that ensures that argv[0] has a path
 299  * and that default fmode and std(in|out|err) are in binary mode
 300  */
 301
 302 #define main(c,v) dummy_decl_mingw_main(); \
 303 static int mingw_main(); \
 304 int main(int argc, const char **argv) \
 305 { \
 306         _fmode = _O_BINARY; \
 307         _setmode(_fileno(stdin), _O_BINARY); \
 308         _setmode(_fileno(stdout), _O_BINARY); \
 309         _setmode(_fileno(stderr), _O_BINARY); \
 310         argv[0] = xstrdup(_pgmptr); \
 311         return mingw_main(argc, argv); \
 312 } \
 313 static int mingw_main(c,v)
 314
 315 #ifndef NO_MINGW_REPLACE_READDIR
 316 /*
 317  * A replacement of readdir, to ensure that it reads the file type at
 318  * the same time. This avoid extra unneeded lstats in git on MinGW
 319  */
 320 #undef DT_UNKNOWN
 321 #undef DT_DIR
 322 #undef DT_REG
 323 #undef DT_LNK
 324 #define DT_UNKNOWN      0
 325 #define DT_DIR          1
 326 #define DT_REG          2
 327 #define DT_LNK          3
 328
 329 struct mingw_dirent
 330 {
 331         long            d_ino;                  /* Always zero. */
 332         union {
 333                 unsigned short  d_reclen;       /* Always zero. */
 334                 unsigned char   d_type;         /* Reimplementation adds this */
 335         };
 336         unsigned short  d_namlen;               /* Length of name in d_name. */
 337         char            d_name[FILENAME_MAX];   /* File name. */
 338 };
 339 #define dirent mingw_dirent
 340 #define readdir(x) mingw_readdir(x)
 341 struct dirent *mingw_readdir(DIR *dir);
 342 #endif // !NO_MINGW_REPLACE_READDIR
 343
 344 /*
 345  * Used by Pthread API implementation for Windows
 346  */
 347 extern int err_win_to_posix(DWORD winerr);