Linux Access Control Lists library (libacl, -lacl).  The function
removes  the  ACL  entry indicated by the descriptor from the ACL
pointed to by Any existing ACL entry descriptors  that  refer  to
entries  in  other  than that referred to by continue to refer to
the same entries. The argument and any other ACL  entry  descrip‐
tors  that  refer  to the same ACL entry are undefined after this
function completes. Any existing ACL pointers that refer  to  the
ACL  referred  to by continue to refer to the ACL.  If any of the
following conditions occur, the function returns and sets to  the
corresponding  value:  The  argument is not a valid pointer to an
ACL.  The argument is not a valid pointer to an ACL entry.   IEEE
Std  1003.1e  draft  17  (“POSIX.1e”, abandoned) Derived from the
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