freebsd man page for acl_create_entry_np

ACL_CREATE_ENTRY(3)					   BSD Library Functions Manual 				       ACL_CREATE_ENTRY(3)

NAME
     acl_create_entry acl_create_entry_np -- create a new ACL entry

LIBRARY
     Standard C Library (libc, -lc)

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

     int
     acl_create_entry(acl_t *acl_p, acl_entry_t *entry_p);

     int
     acl_create_entry_np(acl_t *acl_p, acl_entry_t *entry_p, int index);

DESCRIPTION
     The acl_create_entry() function is a POSIX.1e call that creates a new ACL entry in the ACL pointed to by acl_p.  The acl_create_entry_np()
     function is a non-portable version that creates the ACL entry at position index.  Positions are numbered starting from zero, i.e. calling
     acl_create_entry_np() with index argument equal to zero will prepend the entry to the ACL.

RETURN VALUES
     The acl_create_entry() 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_create_entry() function fails if:

     [EINVAL]		Argument acl_p does not point to a pointer to a valid ACL.  Argument index is out of bounds.

     [ENOMEM]		The ACL working storage requires more memory than is allowed by the hardware or system-imposed memory management con-
			straints.

SEE ALSO
     acl(3), acl_delete_entry(3), acl_get_entry(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_create_entry() function was added in FreeBSD 5.0.

AUTHORS
     The acl_create_entry() function was written by Chris D. Faulhaber <jedgar@fxp.org>.

BSD
								   June 25, 2009							       BSD