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


SYNOPSIS

     int
     acl_get_perm(acl_permset_t permset_d, acl_perm_t perm)


DESCRIPTION

     The acl_get_perm() function tests if the permission specified by the ar­
     gument perm is contained in the ACL permission set pointed to by the ar­
     gument permset_d.

     Any existing descriptors that refer to permset_d continue to refer to
     that permission set.


RETURN VALUE

     If successful, the acl_get_perm() function returns 1 if the permission
     specified by perm is contained in the ACL permission set permset_d, and 0
     if the permission is not contained in the permission set. 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_get_perm() function re­
     turns -1 and sets errno to the corresponding value:

     [EINVAL]      The argument permset_d is not a valid descriptor for a per­
                   mission set within an ACL entry.

                   The argument perm is not a valid acl_perm_t value.


STANDARDS

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


SEE ALSO

     acl_add_perm(3),  acl_clear_perms(3),  acl_delete_perm(3),
     acl_get_permset(3),  acl_set_permset(3),  acl(5)


AUTHOR

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

 Linux ACL                      March 23, 2002                               1

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