freebsd man page for acl_get_brand_np

ACL_GET_BRAND_NP(3)					   BSD Library Functions Manual 				       ACL_GET_BRAND_NP(3)

NAME
     acl_get_brand_np -- retrieve the ACL brand from an ACL entry

LIBRARY
     Standard C Library (libc, -lc)

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

     int
     acl_get_brand_np(acl_t acl, int *brand_p);

DESCRIPTION
     The acl_get_brand_np() function is a non-portable call that returns the ACL brand for the ACL acl.  Upon successful completion, the location
     referred to by the argument brand_p will be set to the ACL brand of the ACL acl.

     Branding is an internal mechanism intended to prevent mixing POSIX.1e and NFSv4 entries by mistake.  It's also used by the libc to determine
     how to print out the ACL.	The first call to function that is specific for one particular brand - POSIX.1e or NFSv4 - "brands" the ACL.
     After that, calling function specific to another brand will result in error.

RETURN VALUES
     The acl_get_brand_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.

ERRORS
     The acl_get_brand_np() function fails if:

     [EINVAL]		Argument acl does not point to a valid ACL.

SEE ALSO
     acl(3), posix1e(3)

STANDARDS
     POSIX.1e is described in IEEE POSIX.1e draft 17.

HISTORY
     POSIX.1e support was introduced in FreeBSD 4.0.  The acl_get_brand_np() function was added in FreeBSD 8.0.

AUTHORS
     The acl_get_brand_np() function was written by Edward Tomasz Napierala <trasz@FreeBSD.org>.

BSD
								   June 25, 2009							       BSD