[PATCH 04/10] mount.nfs: make nfs_lookup() global

Chuck Lever
2009-12-08T18:00:19Z

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>
---

utils/mount/network.c | 14 ++++++++++++--
utils/mount/network.h | 2 ++
2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/utils/mount/network.c b/utils/mount/network.c
index ecb5acc..7d9accd 100644
--- 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 7eb89b0..2cdf02e 100644
--- 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);