glibc/include/rpc/rpc.h
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

70 lines
2.0 KiB
C

#ifndef _RPC_RPC_H
#include <sunrpc/rpc/rpc.h>
# ifndef _ISOMAC
#include <libc-tsd.h>
/* Now define the internal interfaces. */
extern unsigned long _create_xid (void);
/*
* Multi-threaded support
* Group all global and static variables into a single spot.
* This area is allocated on a per-thread basis
*/
#ifdef _RPC_THREAD_SAFE_
struct rpc_thread_variables {
fd_set svc_fdset_s; /* Global, rpc_common.c */
struct rpc_createerr rpc_createerr_s; /* Global, rpc_common.c */
struct pollfd *svc_pollfd_s; /* Global, rpc_common.c */
int svc_max_pollfd_s; /* Global, rpc_common.c */
char *clnt_perr_buf_s; /* clnt_perr.c */
struct clntraw_private_s *clntraw_private_s; /* clnt_raw.c */
struct callrpc_private_s *callrpc_private_s; /* clnt_simp.c */
struct key_call_private *key_call_private_s; /* key_call.c */
struct cache_entry *authdes_cache_s; /* svcauth_des.c */
int *authdes_lru_s; /* svcauth_des.c */
SVCXPRT **svc_xports_s; /* svc.c */
struct svc_callout *svc_head_s; /* svc.c */
struct svcraw_private_s *svcraw_private_s; /* svc_raw.c */
struct proglst_ *svcsimple_proglst_s; /* svc_simple.c */
SVCXPRT *svcsimple_transp_s; /* svc_simple.c */
};
extern struct rpc_thread_variables *__rpc_thread_variables(void)
__attribute__ ((const));
extern void __rpc_thread_svc_cleanup (void);
extern void __rpc_thread_clnt_cleanup (void);
extern void __rpc_thread_key_cleanup (void);
extern void __rpc_thread_destroy (void);
__libc_tsd_define (extern, struct rpc_thread_variables *, RPC_VARS)
#define RPC_THREAD_VARIABLE(x) (__rpc_thread_variables()->x)
libc_hidden_proto (__rpc_thread_svc_max_pollfd)
libc_hidden_proto (__rpc_thread_svc_pollfd)
libc_hidden_proto (__rpc_thread_svc_fdset)
libc_hidden_proto (__rpc_thread_createerr)
/* Perform a host name lookup for NAME and return the first IPv4
address in *ADDR. Return 0 on success and -1 on error (and set an
RPC error). */
int __libc_rpc_gethostbyname (const char *host, struct sockaddr_in *addr)
attribute_hidden;
#endif /* _RPC_THREAD_SAFE_ */
# endif /* !_ISOMAC */
#endif