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authorFlorian Weimer <fweimer@redhat.com>2016-12-27 16:44:15 +0100
committerFlorian Weimer <fweimer@redhat.com>2016-12-27 16:44:15 +0100
commit5c6e6747356f5d473c2c62e818bc24432ddef3e2 (patch)
tree1621c0978cfba034ef116b036504d0f40fd73e1b /include
parenta36451ff4142b63a76cea9e52ffe4687290071a4 (diff)
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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; }
Diffstat (limited to 'include')
-rw-r--r--include/rpc/rpc.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/rpc/rpc.h b/include/rpc/rpc.h
index 4c9ee82617..60c78968de 100644
--- a/include/rpc/rpc.h
+++ b/include/rpc/rpc.h
@@ -57,6 +57,12 @@ 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 */