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acl_copy_ext.c

/*
  File: acl_copy_ext.c

  Copyright (C) 1999, 2000
  Andreas Gruenbacher, <a.gruenbacher@computer.org>

  This program is free software; you can redistribute it and/or
  modify it under the terms of the GNU Library General Public
  License as published by the Free Software Foundation; either
  version 2 of the License, or (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Library General Public License for more details.

  You should have received a copy of the GNU Library General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/

#include "libacl.h"


/* 23.4.5 */
ssize_t
acl_copy_ext(void *buf_p, acl_t acl, ssize_t size)
{
      struct __acl *acl_ext = (struct __acl *)buf_p;
      struct __acl_entry *ent_p = acl_ext->x_entries;
      acl_obj *acl_obj_p = ext2int(acl, acl);
      acl_entry_obj *entry_obj_p;
      ssize_t size_required;
      
      if (!acl_obj_p)
            return -1;
      size_required = sizeof(struct __acl) +
                      acl_obj_p->aused * sizeof(struct __acl_entry);
      if (size < size_required) {
            errno = ERANGE;
            return -1;
      }
      acl_ext->x_size = size_required;
      FOREACH_ACL_ENTRY(entry_obj_p, acl_obj_p) {
            //ent_p->e_tag  = cpu_to_le16(entry_obj_p->etag);
            //ent_p->e_perm = cpu_to_le16(entry_obj_p->eperm.sperm);
            //ent_p->e_id   = cpu_to_le32(entry_obj_p->eid.quid);
            *ent_p++ = entry_obj_p->eentry;
      }
      return 0;
}


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