nss/tst-nss-files-hosts-long.c

   1 /* Test getent doesn't fail with long /etc/hosts lines (Bug 21915).
   2    Copyright (C) 2019-2024 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 License as
   7    published by the Free Software Foundation; either version 2.1 of the
   8    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; see the file COPYING.LIB.  If
  17    not, see <https://www.gnu.org/licenses/>.  */
  18
  19 /* This test runs getent twice to parse a /etc/hosts with a very
  20    long line. Prior to fixing this parser this would crash getent.  */
  21
  22 #include <stdlib.h>
  23 #include <nss.h>
  24 #include <support/check.h>
  25
  26 static int
  27 do_test (void)
  28 {
  29   int ret;
  30
  31   /* Run getent to fetch the IPv4 address for host test4.  This forces
  32      /etc/hosts to be parsed.  Use --no-addrconfig to return addresses
  33      even in an IPv6-only environment.  */
  34   ret = system("getent --no-addrconfig ahostsv4 test4");
  35   if (ret != 0)
  36     FAIL_EXIT1("ahostsv4 failed");
  37
  38   /* Likewise for IPv6.  */
  39   ret = system("getent --no-addrconfig  ahostsv6 test6");
  40   if (ret != 0)
  41     FAIL_EXIT1("ahostsv6 failed");
  42
  43   exit (0);
  44 }
  45
  46 #include <support/test-driver.c>