+int win_to_posix_error(DWORD winerr)
+{
+ switch (winerr)
+ {
+ case ERROR_FILE_NOT_FOUND: return ENOENT;
+ case ERROR_PATH_NOT_FOUND: return ENOENT;
+ case ERROR_ACCESS_DENIED: return EACCES;
+ case ERROR_INVALID_HANDLE: return EBADF;
+ case ERROR_NOT_ENOUGH_MEMORY: return ENOMEM;
+ case ERROR_INVALID_DATA: return EINVAL;
+ case ERROR_OUTOFMEMORY: return ENOMEM;
+ case ERROR_INVALID_DRIVE: return ENODEV;
+ case ERROR_NOT_SAME_DEVICE: return EXDEV;
+ case ERROR_WRITE_PROTECT: return EROFS;
+ case ERROR_BAD_UNIT: return ENODEV;
+ case ERROR_SHARING_VIOLATION: return EACCES;
+ case ERROR_LOCK_VIOLATION: return EACCES;
+ case ERROR_SHARING_BUFFER_EXCEEDED: return ENOLCK;
+ case ERROR_HANDLE_DISK_FULL: return ENOSPC;
+ case ERROR_NOT_SUPPORTED: return ENOSYS;
+ case ERROR_FILE_EXISTS: return EEXIST;
+ case ERROR_CANNOT_MAKE: return EPERM;
+ case ERROR_INVALID_PARAMETER: return EINVAL;
+ case ERROR_NO_PROC_SLOTS: return EAGAIN;
+ case ERROR_BROKEN_PIPE: return EPIPE;
+ case ERROR_OPEN_FAILED: return EIO;
+ case ERROR_NO_MORE_SEARCH_HANDLES: return ENFILE;
+ case ERROR_CALL_NOT_IMPLEMENTED: return ENOSYS;
+ case ERROR_INVALID_NAME: return ENOENT;
+ case ERROR_WAIT_NO_CHILDREN: return ECHILD;
+ case ERROR_CHILD_NOT_COMPLETE: return EBUSY;
+ case ERROR_DIR_NOT_EMPTY: return ENOTEMPTY;
+ case ERROR_SIGNAL_REFUSED: return EIO;
+ case ERROR_BAD_PATHNAME: return ENOENT;
+ case ERROR_SIGNAL_PENDING: return EBUSY;
+ case ERROR_MAX_THRDS_REACHED: return EAGAIN;
+ case ERROR_BUSY: return EBUSY;
+ case ERROR_ALREADY_EXISTS: return EEXIST;
+ case ERROR_NO_SIGNAL_SENT: return EIO;
+ case ERROR_FILENAME_EXCED_RANGE: return EINVAL;
+ case ERROR_META_EXPANSION_TOO_LONG: return EINVAL;
+ case ERROR_INVALID_SIGNAL_NUMBER: return EINVAL;
+ case ERROR_THREAD_1_INACTIVE: return EINVAL;
+ case ERROR_BAD_PIPE: return EINVAL;
+ case ERROR_PIPE_BUSY: return EBUSY;
+ case ERROR_NO_DATA: return EPIPE;
+ case ERROR_MORE_DATA: return EAGAIN;
+ case ERROR_DIRECTORY: return ENOTDIR;
+ case ERROR_PIPE_CONNECTED: return EBUSY;
+ case ERROR_NO_TOKEN: return EINVAL;
+ case ERROR_PROCESS_ABORTED: return EFAULT;
+ case ERROR_BAD_DEVICE: return ENODEV;
+ case ERROR_BAD_USERNAME: return EINVAL;
+ case ERROR_OPEN_FILES: return EAGAIN;
+ case ERROR_ACTIVE_CONNECTIONS: return EAGAIN;
+ case ERROR_DEVICE_IN_USE: return EAGAIN;
+ case ERROR_INVALID_AT_INTERRUPT_TIME: return EINTR;
+ case ERROR_IO_DEVICE: return EIO;
+ case ERROR_NOT_OWNER: return EPERM;
+ case ERROR_END_OF_MEDIA: return ENOSPC;
+ case ERROR_EOM_OVERFLOW: return ENOSPC;
+ case ERROR_BEGINNING_OF_MEDIA: return ESPIPE;
+ case ERROR_SETMARK_DETECTED: return ESPIPE;
+ case ERROR_NO_DATA_DETECTED: return ENOSPC;
+ case ERROR_POSSIBLE_DEADLOCK: return EDEADLOCK;
+ case ERROR_CRC: return EIO;
+ case ERROR_NEGATIVE_SEEK: return EINVAL;
+ case ERROR_DISK_FULL: return ENOSPC;
+ case ERROR_NOACCESS: return EFAULT;
+ case ERROR_FILE_INVALID: return ENXIO;
+ }
+
+ return winerr;
+}
+