Now that we have an AF_INET6-capable probe_bothports(), we can support
AF_INET6 when rewriting text-based NFS mount options. This should be
adequate to support NFS transport protocol and version negotiation with
AF_INET6 NFS servers.
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
---
utils/mount/stropts.c | 74 ++++++++++++++++++++++++++++++++-----------------
1 files changed, 49 insertions(+), 25 deletions(-)
diff --git a/utils/mount/stropts.c b/utils/mount/stropts.c
index 319be71..6d44bb7 100644
--- a/utils/mount/stropts.c
+++ b/utils/mount/stropts.c
@@ -309,6 +309,37 @@ static int nfs_is_permanent_error(int error)
}
}
+/*
+ * Get NFS/mnt server addresses from mount options
+ *
+ * Returns 1 and fills in @nfs_saddr, @nfs_salen, @mnt_saddr, and @mnt_salen
+ * if all goes well; otherwise zero.
+ */
+static int nfs_extract_server_addresses(struct mount_options *options,
+ struct sockaddr *nfs_saddr,
+ socklen_t *nfs_salen,
+ struct sockaddr *mnt_saddr,
+ socklen_t *mnt_salen)
+{
+ char *option;
+
+ option = po_get(options, "addr");
+ if (option == NULL)
+ return 0;
+ if (!nfs_string_to_sockaddr(option, strlen(option),
+ nfs_saddr, nfs_salen))
+ return 0;
+
+ option = po_get(options, "mountaddr");
+ if (option == NULL)
+ memcpy(mnt_saddr, nfs_saddr, *nfs_salen);
+ else if (!nfs_string_to_sockaddr(option, strlen(option),
+ mnt_saddr, mnt_salen))
+ return 0;
+
+ return 1;
+}
+
static int nfs_construct_new_options(struct mount_options *options,
struct pmap *nfs_pmap,
struct pmap *mnt_pmap)
@@ -400,9 +431,14 @@ static int nfs_construct_new_options(struct mount_options *options,
static struct mount_options *nfs_rewrite_mount_options(char *str)
{
struct mount_options *options;
- char *option;
- clnt_addr_t mnt_server = { };
- clnt_addr_t nfs_server = { };
+ struct sockaddr_storage nfs_address;
+ struct sockaddr *nfs_saddr = (struct sockaddr *)&nfs_address;
+ socklen_t nfs_salen;
+ struct pmap nfs_pmap;
+ struct sockaddr_storage mnt_address;
+ struct sockaddr *mnt_saddr = (struct sockaddr *)&mnt_address;
+ socklen_t mnt_salen;
+ struct pmap mnt_pmap;
options = po_split(str);
if (!options) {
@@ -410,39 +446,27 @@ static struct mount_options *nfs_rewrite_mount_options(char *str)
return NULL;
}
- errno = EINVAL;
- option = po_get(options, "addr");
- if (option) {
- nfs_server.saddr.sin_family = AF_INET;
- if (!inet_aton((const char *)option, &nfs_server.saddr.sin_addr))
- goto err;
- } else
+ if (!nfs_extract_server_addresses(options, nfs_saddr, &nfs_salen,
+ mnt_saddr, &mnt_salen)) {
+ errno = EINVAL;
goto err;
+ }
- option = po_get(options, "mountaddr");
- if (option) {
- mnt_server.saddr.sin_family = AF_INET;
- if (!inet_aton((const char *)option, &mnt_server.saddr.sin_addr))
- goto err;
- } else
- memcpy(&mnt_server.saddr, &nfs_server.saddr,
- sizeof(mnt_server.saddr));
-
- nfs_options2pmap(options, &nfs_server.pmap, &mnt_server.pmap);
+ nfs_options2pmap(options, &nfs_pmap, &mnt_pmap);
/* The kernel NFS client doesn't support changing the RPC program
* number for these services, so reset these fields before probing
* the server's ports. */
- nfs_server.pmap.pm_prog = NFS_PROGRAM;
- mnt_server.pmap.pm_prog = MOUNTPROG;
+ nfs_pmap.pm_prog = NFS_PROGRAM;
+ mnt_pmap.pm_prog = MOUNTPROG;
- if (!probe_bothports(&mnt_server, &nfs_server)) {
+ if (!nfs_probe_bothports(mnt_saddr, mnt_salen, &mnt_pmap,
+ nfs_saddr, nfs_salen, &nfs_pmap)) {
errno = ESPIPE;
goto err;
}
- if (!nfs_construct_new_options(options,
- &nfs_server.pmap, &mnt_server.pmap)) {
+ if (!nfs_construct_new_options(options, &nfs_pmap, &mnt_pmap)) {
errno = EINVAL;
goto err;
}
--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
