NAME

       acl_get_perm — test for a permission in an ACL permission set

LIBRARY

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

SYNOPSIS

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

       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 argument perm (one of ACL_READ,
       ACL_WRITE, ACL_EXECUTE) is contained in the ACL permission set pointed to by the argument 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 returns -1 and sets  errno  to  the
       corresponding value:

       [EINVAL]           The  argument  permset_d  is not a valid descriptor for a permission 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 <andreas.gruenbacher@gmail.com>.

Linux ACL                                        March 23, 2002                                  ACL_GET_PERM(3)