shadow/putspent.c

   1 /* Copyright (C) 1991-2013 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, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <stdio.h>
  19 #include <shadow.h>
  20
  21 #define flockfile(s) _IO_flockfile (s)
  22 #define funlockfile(s) _IO_funlockfile (s)
  23
  24 #define _S(x)   x ? x : ""
  25
  26
  27 /* Write an entry to the given stream.
  28    This must know the format of the password file.  */
  29 int
  30 putspent (const struct spwd *p, FILE *stream)
  31 {
  32   int errors = 0;
  33
  34   flockfile (stream);
  35
  36   if (fprintf (stream, "%s:%s:", p->sp_namp, _S (p->sp_pwdp)) < 0)
  37     ++errors;
  38
  39   if ((p->sp_lstchg != (long int) -1
  40        && fprintf (stream, "%ld:", p->sp_lstchg) < 0)
  41       || (p->sp_lstchg == (long int) -1
  42           && putc_unlocked (':', stream) == EOF))
  43     ++errors;
  44
  45   if ((p->sp_min != (long int) -1
  46        && fprintf (stream, "%ld:", p->sp_min) < 0)
  47       || (p->sp_min == (long int) -1
  48           && putc_unlocked (':', stream) == EOF))
  49     ++errors;
  50
  51   if ((p->sp_max != (long int) -1
  52        && fprintf (stream, "%ld:", p->sp_max) < 0)
  53       || (p->sp_max == (long int) -1
  54           && putc_unlocked (':', stream) == EOF))
  55     ++errors;
  56
  57   if ((p->sp_warn != (long int) -1
  58        && fprintf (stream, "%ld:", p->sp_warn) < 0)
  59       || (p->sp_warn == (long int) -1
  60           && putc_unlocked (':', stream) == EOF))
  61     ++errors;
  62
  63   if ((p->sp_inact != (long int) -1
  64        && fprintf (stream, "%ld:", p->sp_inact) < 0)
  65       || (p->sp_inact == (long int) -1
  66           && putc_unlocked (':', stream) == EOF))
  67     ++errors;
  68
  69   if ((p->sp_expire != (long int) -1
  70        && fprintf (stream, "%ld:", p->sp_expire) < 0)
  71       || (p->sp_expire == (long int) -1
  72           && putc_unlocked (':', stream) == EOF))
  73     ++errors;
  74
  75   if (p->sp_flag != ~0ul
  76       && fprintf (stream, "%ld", p->sp_flag) < 0)
  77     ++errors;
  78
  79   if (putc_unlocked ('\n', stream) == EOF)
  80     ++errors;
  81
  82   funlockfile (stream);
  83
  84   return errors ? -1 : 0;
  85 }