redhat man page for acl_cmp

ACL_CMP(3)						   BSD Library Functions Manual 						ACL_CMP(3)

NAME
     acl_cmp -- compare two ACLs

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

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

     int
     acl_cmp(acl_t acl1, acl_t acl2);

DESCRIPTION
     The acl_cmp() function compares the ACLs pointed to by the arguments acl1 and acl2 for equality. The two ACLs are considered equal if for
     each entry in acl1 there is an entry in acl2 with matching tag type, qualifier, and permissions, and vice versa.

RETURN VALUE
     If successful, the acl_cmp() function returns 0 if the two ACLs acl1 and acl2 are equal, and 1 if they differ. 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_cmp() function returns -1 and sets errno to the corresponding value:

     [EINVAL]		The argument acl1 is not a valid pointer to an ACL.

			The argument acl2 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