grp/grp-merge.h

   1 /* Group merging implementation.
   2    Copyright (C) 2016-2022 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _GRP_MERGE_H
  20 #define _GRP_MERGE_H 1
  21
  22 #include <grp.h>
  23
  24 /* Duplicate a grp struct (and its members). When no longer needed, the
  25    calling function must free(newbuf).  */
  26 int
  27 __copy_grp (const struct group srcgrp, const size_t buflen,
  28             struct group *destgrp, char *destbuf, char **endptr);
  29
  30 /* Merge the member lists of two grp structs together.  */
  31 int
  32 __merge_grp (struct group *savedgrp, char *savedbuf, char *savedend,
  33              size_t buflen, struct group *mergegrp, char *mergebuf);
  34
  35 #endif /* _GRP_MERGE_H */