pwd/putpwent.c

   1 /* Copyright (C) 1991,1992,1996,1997,1998,2005 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 <errno.h>
  20 #include <stdio.h>
  21 #include <pwd.h>
  22
  23 #define _S(x)   x ?: ""
  24
  25 /* Write an entry to the given stream.
  26    This must know the format of the password file.  */
  27 int
  28 putpwent (p, stream)
  29      const struct passwd *p;
  30      FILE *stream;
  31 {
  32   if (p == NULL || stream == NULL)
  33     {
  34       __set_errno (EINVAL);
  35       return -1;
  36     }
  37
  38   if (p->pw_name[0] == '+' || p->pw_name[0] == '-')
  39     {
  40       if (fprintf (stream, "%s:%s:::%s:%s:%s\n",
  41                    p->pw_name, _S (p->pw_passwd),
  42                    _S (p->pw_gecos), _S (p->pw_dir), _S (p->pw_shell)) < 0)
  43         return -1;
  44     }
  45   else
  46     {
  47       if (fprintf (stream, "%s:%s:%lu:%lu:%s:%s:%s\n",
  48                    p->pw_name, _S (p->pw_passwd),
  49                    (unsigned long int) p->pw_uid,
  50                    (unsigned long int) p->pw_gid,
  51                    _S (p->pw_gecos), _S (p->pw_dir), _S (p->pw_shell)) < 0)
  52         return -1;
  53     }
  54   return 0;
  55 }