372   struct stat stbuf;  in FileSize()  local
373   int rc = fstat(fd, &stbuf);  in FileSize()
379   if (S_ISREG(stbuf.st_mode))  in FileSize()
380     return stbuf.st_size;  in FileSize()
381   if (S_ISBLK(stbuf.st_mode))  in FileSize()
487   struct stat stbuf;  in FileExists()  local
488   return 0 == lstat(path, &stbuf);  in FileExists()
492   struct stat stbuf;  in IsSymlink()  local
493   return lstat(path, &stbuf) == 0 && S_ISLNK(stbuf.st_mode) != 0;  in IsSymlink()
497   struct stat stbuf;  in IsRegFile()  local
498   return lstat(path, &stbuf) == 0 && S_ISREG(stbuf.st_mode) != 0;  in IsRegFile()