mount.nfs: make nfs_lookup() global

Expose a DNS query API that allows callers to request DNS results from
a specific address family.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>

diff --git a/utils/mount/network.c b/utils/mount/network.c
index ecb5accac0621f1a4f0ccb1c3ce12b9e90315ca0..7d9accd19f56ead4410906fb7394edc20a142b87 100644 (file)
--- a/utils/mount/network.c
+++ b/utils/mount/network.c
@@ -193,8 +193,18 @@ static const unsigned int *nfs_default_proto()
 }
 #endif /* MOUNT_CONFIG */
 
-static int nfs_lookup(const char *hostname, const sa_family_t family,
-                     struct sockaddr *sap, socklen_t *salen)
+/**
+ * nfs_lookup - resolve hostname to an IPv4 or IPv6 socket address
+ * @hostname: pointer to C string containing DNS hostname to resolve
+ * @family: address family hint
+ * @sap: pointer to buffer to fill with socket address
+ * @len: IN: size of buffer to fill; OUT: size of socket address
+ *
+ * Returns 1 and places a socket address at @sap if successful;
+ * otherwise zero.
+ */
+int nfs_lookup(const char *hostname, const sa_family_t family,
+               struct sockaddr *sap, socklen_t *salen)
 {
        struct addrinfo *gai_results;
        struct addrinfo gai_hint = {

diff --git a/utils/mount/network.h b/utils/mount/network.h
index 7eb89b049360d7898827294c41a467915e7b3b3e..2cdf02ea971ee12bdddf11b12d3819fa92acdc99 100644 (file)
--- a/utils/mount/network.h
+++ b/utils/mount/network.h
@@ -45,6 +45,8 @@ int nfs_probe_bothports(const struct sockaddr *, const socklen_t,
                        const socklen_t, struct pmap *);
 int nfs_gethostbyname(const char *, struct sockaddr_in *);
 int nfs_name_to_address(const char *, struct sockaddr *, socklen_t *);
+int nfs_lookup(const char *hostname, const sa_family_t family,
+               struct sockaddr *sap, socklen_t *salen);
 int nfs_string_to_sockaddr(const char *, struct sockaddr *, socklen_t *);
 int nfs_present_sockaddr(const struct sockaddr *,
                         const socklen_t, char *, const size_t);