1  /* Group merging implementation.
       2     Copyright (C) 2016-2023 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 */