-#define FSCK_ERROR_BIT 29
-/**
- * This bit indicates whether a number is considered a system error number
- * If yes, the system errno is just the result of clearing this bit from
- * the given number.
- */
-#define SYSTEM_ERROR_BIT 30
-
-/** Check whether the system error bit is set. */
-#define IS_SYSTEM_ERROR(num) (!!((num) & (1 << SYSTEM_ERROR_BIT)))
-
-/** Set the system error bit for the given number. */
-#define ERRNO_TO_ERROR(num) ((num) | (1 << SYSTEM_ERROR_BIT))
-
-/**
- * Check whether a given number is a system error number.
- *
- * \param num The value to be checked.
- * \param _errno The system error number.
- *
- * \return True if \a num is the representation of the system
- * error identified by \a _errno.
- */
-static inline int is_errno(int num, int _errno)
-{
- assert(num > 0 && _errno > 0);
- return ERRNO_TO_ERROR(_errno) == num;
-}