acl_set_permset —
set the permissions of an ACL entry
Standard C Library (libc, -lc)
#include <sys/types.h>
#include <sys/acl.h>
int
  
  acl_set_permset(acl_entry_t
    entry_d, acl_permset_t
    permset_d);
The acl_set_permset() function is a POSIX.1e call that
  sets the permissions of ACL entry entry_d with the
  permissions contained in permset_d.
The acl_set_permset() 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_set_permset() function fails if:
  - [EINVAL]
- Argument entry_d is not a valid descriptor for an
      ACL entry.
POSIX.1e is described in IEEE POSIX.1e draft 17.
POSIX.1e support was introduced in FreeBSD 4.0. Theacl_set_permset() function was added in
  FreeBSD 5.0.
The acl_set_permset() function was written by
  Chris D. Faulhaber
  <jedgar@fxp.org>.