redhat man page for acl_entries

ACL_ENTRIES(3)						   BSD Library Functions Manual 					    ACL_ENTRIES(3)

NAME
     acl_entries -- return the number of entries in an ACL

LIBRARY
     Linux Access Control Lists library (libacl, -lacl).

SYNOPSIS
     #include <sys/types.h>
     #include <acl/libacl.h>

     int
     acl_entries(acl_t acl);

DESCRIPTION
     The acl_entries() function returns the number of ACL entries that are contained in the ACL referred to by the argument acl.

RETURN VALUE
     The acl_entries() function returns the number of entries in acl if successful; otherwise the value -1 is returned and the global variable
     errno is set to indicate the error.

ERRORS
     If any of the following conditions occur, the acl_entries() function returns -1 and sets errno to the corresponding value:

     [EINVAL]		The argument acl is not a valid pointer to an ACL.

STANDARDS
     This is a non-portable, Linux specific extension to the ACL manipulation functions defined in IEEE Std 1003.1e draft 17 ("POSIX.1e", aban-
     doned).

SEE ALSO
     acl(5)

AUTHOR
     Written by Andreas Gruenbacher <a.gruenbacher@computer.org>.

Linux ACL							  March 23, 2002							 Linux ACL