nss/nss_test_gai_hv2_canonname.c

   1 /* NSS service provider that only provides gethostbyname2_r.
   2    Copyright The GNU Toolchain Authors.
   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 #include <nss.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22 #include "nss/tst-nss-gai-hv2-canonname.h"
  23
  24 /* Catch misnamed and functions.  */
  25 #pragma GCC diagnostic error "-Wmissing-prototypes"
  26 NSS_DECLARE_MODULE_FUNCTIONS (test_gai_hv2_canonname)
  27
  28 extern enum nss_status _nss_files_gethostbyname2_r (const char *, int,
  29                                                     struct hostent *, char *,
  30                                                     size_t, int *, int *);
  31
  32 enum nss_status
  33 _nss_test_gai_hv2_canonname_gethostbyname2_r (const char *name, int af,
  34                                               struct hostent *result,
  35                                               char *buffer, size_t buflen,
  36                                               int *errnop, int *herrnop)
  37 {
  38   return _nss_files_gethostbyname2_r (name, af, result, buffer, buflen, errnop,
  39                                       herrnop);
  40 }
  41
  42 enum nss_status
  43 _nss_test_gai_hv2_canonname_getcanonname_r (const char *name, char *buffer,
  44                                             size_t buflen, char **result,
  45                                             int *errnop, int *h_errnop)
  46 {
  47   /* We expect QUERYNAME, which is a small enough string that it shouldn't fail
  48      the test.  */
  49   if (memcmp (QUERYNAME, name, sizeof (QUERYNAME))
  50       || buflen < sizeof (QUERYNAME))
  51     abort ();
  52
  53   strncpy (buffer, name, buflen);
  54   *result = buffer;
  55   return NSS_STATUS_SUCCESS;
  56 }