gshadow/putsgent.c

   1 /* Copyright (C) 2009 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <stdbool.h>
  20 #include <stdio.h>
  21 #include <gshadow.h>
  22
  23 #define _S(x)   x ? x : ""
  24
  25
  26 /* Write an entry to the given stream.
  27    This must know the format of the group file.  */
  28 int
  29 putsgent (const struct sgrp *g, FILE *stream)
  30 {
  31   int errors = 0;
  32
  33   _IO_flockfile (stream);
  34
  35   if (fprintf (stream, "%s:%s:", g->sg_namp, _S (g->sg_passwd)) < 0)
  36     ++errors;
  37
  38   bool first = true;
  39   char **sp = g->sg_adm;
  40   if (sp != NULL)
  41     while (*sp != NULL)
  42       {
  43         if (fprintf (stream, "%s%s", first ? "" : ",", *sp++) < 0)
  44           {
  45             ++errors;
  46             break;
  47           }
  48         first = false;
  49       }
  50   if (putc_unlocked (':', stream) == EOF)
  51     ++errors;
  52
  53   first = true;
  54   sp = g->sg_mem;
  55   if (sp != NULL)
  56     while (*sp != NULL)
  57       {
  58         if (fprintf (stream, "%s%s", first ? "" : ",", *sp++) < 0)
  59           {
  60             ++errors;
  61             break;
  62           }
  63         first = false;
  64       }
  65   if (putc_unlocked ('\n', stream) == EOF)
  66     ++errors;
  67
  68   _IO_funlockfile (stream);
  69
  70   return errors ? -1 : 0;
  71 }