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Florian Weimer 5c6e674735 sunrpc: Always obtain AF_INET addresses from NSS [BZ #20964] 
The new __libc_rpc_gethostbyname function calls gethostbyname2_r
with an AF_INET argument and is therefore not affected by the
RES_USE_INET6 flag.

Validated with the following test program, with and without
RES_OPTIONS=inet6, against a NFS server.  (Link with -lrpcsvc.)

#include <rpc/clnt.h>
#include <rpcsvc/mount.h>
#include <stdio.h>
#include <string.h>

static void
usage (char **argv)
{
  printf ("usage:\n"
          "  %1$s HOST getrpcport\n"
          "  %1$s HOST callrpc\n"
          "  %1$s HOST clnt_create\n",
          argv[0]);
}

static void
dump_exports (struct exportnode *exports)
{
  while (exports != NULL)
    {
      printf ("%s\n", exports->ex_dir);
      exports = exports->ex_next;
    }
}

int
main (int argc, char **argv)
{
  if (argc != 3)
    {
      usage (argv);
      return 1;
    }

  const char *host = argv[1];
  const char *command = argv[2];

  if (strcmp (command, "getrpcport") == 0)
    {
      int port = getrpcport (host, MOUNTPROG, MOUNTVERS, IPPROTO_UDP);
      printf ("getrpcport: %d\n", port);
    }
  else if (strcmp (command, "callrpc") == 0)
    {
      struct exportnode *exports = NULL;
      int ret = callrpc (host, MOUNTPROG, MOUNTVERS, MOUNTPROC_EXPORT,
                         (xdrproc_t) xdr_void, NULL,
                         (xdrproc_t) xdr_exports, (char *)&exports);
      if (ret != 0)
        {
          clnt_perrno (ret);
          puts ("");
          return 1;
        }
      dump_exports (exports);
    }
  else if (strcmp (command, "clnt_create") == 0)
    {
      CLIENT *client = clnt_create
        (host, MOUNTPROG, MOUNTVERS, "udp");
      if (client == NULL)
        {
          printf ("error: clnt_create failed\n");
          return 1;
        }
      struct exportnode *exports = NULL;
      int ret = CLNT_CALL (client, MOUNTPROC_EXPORT,
                           (xdrproc_t) xdr_void, NULL,
                           (xdrproc_t) xdr_exports, (char *)&exports,
                           ((struct timeval) {15, 0}));
      if (ret != 0)
        {
          clnt_perrno (ret);
          puts ("");
          return 1;
        }
      dump_exports (exports);
    }
  else
    {
      usage (argv);
      return 1;
    }

  return 0;
}
2016-12-27 16:44:15 +01:00
..
arpa Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
bits Installed-header hygiene (BZ#20366): time.h types. 2016-09-23 08:43:56 -04:00
gnu Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
net Fix resolver if_* namespace (bug 17717). 2014-12-16 18:18:49 +00:00
netinet Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
programs Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
protocols (abmon): Remove spaces. 1998-11-12 18:03:43 +00:00
rpc sunrpc: Always obtain AF_INET addresses from NSS [BZ #20964] 2016-12-27 16:44:15 +01:00
rpcsvc Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
sys Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
aio.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
aliases.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
alloca.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
argp.h Update. 2000-12-28 15:08:51 +00:00
argz.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
assert.h Remove NOT_IN_libc 2014-11-24 15:03:45 +05:30
atomic.h Use C11-like atomics instead of plain memory accesses in x86 lock elision. 2016-12-05 16:19:43 +01:00
byteswap.h Update. 1998-04-10 10:52:25 +00:00
caller.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
complex.h conformtest: Fix namespace testing. 2013-09-04 20:47:21 +00:00
cpio.h Add more headers to include/ for conform tests. 2014-12-11 21:41:30 +00:00
crypt.h Add include/crypt.h. 2016-10-28 22:40:16 -04:00
ctype.h Rename bits/libc-tsd.h to libc-tsd.h (bug 14912). 2015-09-03 20:33:46 +00:00
des.h Update. 1998-03-24 10:39:42 +00:00
dirent.h Mark internal dirent functions hidden 2015-10-15 14:15:41 -07:00
dlfcn.h Mark _dl_catch_error hidden 2015-10-15 14:13:50 -07:00
elf.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
endian.h Update. 2001-03-30 05:34:59 +00:00
envz.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
err.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
errno.h Remove NOT_IN_libc 2014-11-24 15:03:45 +05:30
error.h Update. 1997-06-21 02:59:26 +00:00
execinfo.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
fcntl.h hurd: Do not hide rtld symbols which need to be preempted 2016-03-20 19:51:42 +01:00
features.h Make _REENTRANT and _THREAD_SAFE aliases for _POSIX_C_SOURCE=199506L. 2016-12-08 15:45:33 -05:00
fenv.h Mark fegetround pure (bug 16296). 2015-09-15 20:36:50 +00:00
fmtmsg.h Add more headers to include/ for conform tests. 2014-12-11 21:41:30 +00:00
fnmatch.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
fpu_control.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
ftw.h Update. 1997-06-21 02:59:26 +00:00
gconv.h Update. 1997-11-18 02:50:07 +00:00
getopt_int.h Update. 2004-03-09 10:36:53 +00:00
getopt.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
glob.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
gmp.h * include/gmp.h: Include/gmp-mparam.h. * stdlib/strtod.c: Include gmp-mparam.h before gmp.h and gmp-impl.h. 2003-03-14 05:48:18 +00:00
gnu-versions.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
grp-merge.h NSS: Implement group merging support. 2016-04-29 22:18:21 -04:00
grp.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
gshadow.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
iconv.h Update. 1999-08-21 00:38:15 +00:00
ifaddrs.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
ifunc-impl-list.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
inline-hashtab.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
langinfo.h Add first fixes for conformtest for POSIX2008 2012-02-26 21:32:56 -05:00
libc-internal.h Bug 20729: Fix building with -Os. 2016-10-29 23:50:56 -04:00
libc-symbols.h Do not stack-protect ifunc resolvers [BZ #7065] 2016-12-26 10:08:41 +01:00
libgen.h Update. 1997-06-21 02:59:26 +00:00
libintl.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
libio.h Rename bits/stdio-lock.h to stdio-lock.h (bug 14912). 2015-09-04 16:21:14 +00:00
limits.h Fix LONG_WIDTH, ULONG_WIDTH include ordering issue. 2016-10-04 16:17:59 +00:00
link.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
list.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
locale.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
malloc.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
math.h Add roundeven, roundevenf, roundevenl. 2016-12-21 01:48:27 +00:00
mcheck.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
memory.h Update. 1997-06-21 02:59:26 +00:00
mntent.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
monetary.h Add first fixes for conformtest for POSIX2008 2012-02-26 21:32:56 -05:00
mqueue.h Fix mq_receive, mq_send mq_timed* namespace (bug 18545). 2015-06-17 20:19:04 +00:00
netdb.h Fix h_errno namespace (bug 18520). 2015-06-12 10:10:18 +00:00
netgroup.h Update. 1997-06-21 02:59:26 +00:00
nl_types.h Update. 1997-12-22 20:53:38 +00:00
nss.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
nsswitch.h Update. 1997-06-21 02:59:26 +00:00
obstack.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
poll.h Update. 2000-08-21 16:02:48 +00:00
printf.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
pthread.h Fix mq_notify pthread_barrier_* namespace (bug 18544). 2015-06-17 20:16:56 +00:00
pty.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
pwd.h Harden putpwent, putgrent, putspent, putspent against injection [BZ #18724] 2015-10-02 11:34:13 +02:00
regex.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
resolv.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
rounding-mode.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
sched.h posix: New Linux posix_spawn{p} implementation 2016-03-07 11:53:47 +07:00
scratch_buffer.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
search.h Fix sem_* tdelete, tfind, tsearch, twalk namespace (bug 18536). 2015-06-17 20:11:58 +00:00
set-hooks.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
setjmp.h Mark internal setjmp functions hidden 2015-10-15 14:22:25 -07:00
sgtty.h Update. 1997-06-21 02:59:26 +00:00
shadow.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
shlib-compat.h Add support for referencing specific symbol versions 2016-08-02 17:18:08 +02:00
signal.h Mark ld.so internel sigaction functions hidden 2015-10-15 14:23:31 -07:00
spawn.h Update. 2000-10-01 19:15:29 +00:00
stab.h Update. 1997-06-21 02:59:26 +00:00
stackinfo.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
stap-probe.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
stdc-predef.h Revert __malloc_initialize_hook symbol poisoning 2016-06-20 11:11:29 +02:00
stdio_ext.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
stdio.h Fix crypt snprintf namespace (bug 20829). 2016-11-16 22:46:48 +00:00
stdlib.h Refactor strtod parsing of NaN payloads. 2015-11-24 22:24:52 +00:00
string.h New string function explicit_bzero (from OpenBSD). 2016-12-16 16:21:54 -05:00
strings.h Update. 1997-06-21 02:59:26 +00:00
stropts.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
stubs-prologue.h * sysdeps/generic/bits/libc-tsd.h [USE___THREAD]: Conditional 2002-10-11 10:52:20 +00:00
syscall.h Update. 1997-06-21 02:59:26 +00:00
sysexits.h Update. 1997-06-21 02:59:26 +00:00
syslog.h Update. 1997-06-21 02:59:26 +00:00
tar.h Update. 1997-06-21 02:59:26 +00:00
termios.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
tgmath.h Update. 1998-09-06 23:45:24 +00:00
time.h Installed-header hygiene (BZ#20366): time.h types. 2016-09-23 08:43:56 -04:00
ttyent.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
uchar.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
ucontext.h Update. 1999-10-12 18:17:41 +00:00
ulimit.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
unistd.h Fix hurd __access_noerrno implementation. 2016-11-18 16:49:08 -02:00
utime.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
utmp.h Installed header hygiene (BZ#20366): Test of installed headers. 2016-09-23 08:43:56 -04:00
values.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
wchar.h Use __typeof instead of typeof 2016-06-04 09:19:09 +02:00
wctype.h Fix regex wctype namespace (bug 18495). 2015-06-05 20:04:47 +00:00
wordexp.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
xlocale.h Update. 1997-06-21 02:59:26 +00:00