acl_get_entry_type_np —
retrieve the ACL type from an NFSv4 ACL entry
Standard C Library (libc, -lc)
#include <sys/types.h>
#include <sys/acl.h>
int
  
  acl_get_entry_type_np(acl_entry_t
    entry_d, acl_entry_type_t
    *entry_type_p);
The acl_get_entry_type_np() function is a non-portable
  call that returns the ACL type for the NFSv4 ACL entry
  entry_d. Upon successful completion, the location
  referred to by the argument entry_type_p will be set to
  the ACL type of the ACL entry entry_d.
The acl_get_entry_type_np() function returns the
  value 0 if successful; otherwise the value -1 is returned and
  the global variable errno is set to indicate the error.
The acl_get_entry_type_np() function fails if:
  - [EINVAL]
- Argument entry_d is not a valid descriptor for an
      NFSv4 ACL entry;
POSIX.1e is described in IEEE POSIX.1e draft 17.
POSIX.1e support was introduced in FreeBSD 4.0. Theacl_get_entry_type_np() function was added in
  FreeBSD 8.0.
The acl_get_entry_type_np() function was written by
  Edward Tomasz Napierala
  <trasz@FreeBSD.org>.