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