NFS: Use the DNS resolver in the mount code.
In the referral code, use it to look up the new server's ip address if the fs_locations attribute contains a hostname. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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parent
e571cbf1a4
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@ -17,6 +17,7 @@
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#include <linux/inet.h>
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#include "internal.h"
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#include "nfs4_fs.h"
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#include "dns_resolve.h"
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#define NFSDBG_FACILITY NFSDBG_VFS
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@ -95,6 +96,20 @@ static int nfs4_validate_fspath(const struct vfsmount *mnt_parent,
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return 0;
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}
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static size_t nfs_parse_server_name(char *string, size_t len,
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struct sockaddr *sa, size_t salen)
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{
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ssize_t ret;
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ret = rpc_pton(string, len, sa, salen);
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if (ret == 0) {
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ret = nfs_dns_resolve_name(string, len, sa, salen);
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if (ret < 0)
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ret = 0;
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}
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return ret;
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}
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static struct vfsmount *try_location(struct nfs_clone_mount *mountdata,
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char *page, char *page2,
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const struct nfs4_fs_location *location)
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@ -121,7 +136,8 @@ static struct vfsmount *try_location(struct nfs_clone_mount *mountdata,
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if (memchr(buf->data, IPV6_SCOPE_DELIMITER, buf->len))
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continue;
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mountdata->addrlen = rpc_pton(buf->data, buf->len,
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mountdata->addrlen = nfs_parse_server_name(buf->data,
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buf->len,
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mountdata->addr, mountdata->addrlen);
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if (mountdata->addrlen == 0)
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continue;
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