From: Bryan Schumaker <bjschuma@xxxxxxxxxx>
This simplifies the code for v2 and v3 and gives v4 a chance to decide
on referrals without needing to modify the generic client.
Signed-off-by: Bryan Schumaker <bjschuma@xxxxxxxxxx>
---
fs/nfs/internal.h | 16 +++++-----------
fs/nfs/namespace.c | 46 +++++++++++++++++++---------------------------
fs/nfs/nfs3proc.c | 1 +
fs/nfs/nfs4_fs.h | 2 ++
fs/nfs/nfs4namespace.c | 20 +++++++++++++++++++-
fs/nfs/nfs4proc.c | 1 +
fs/nfs/proc.c | 1 +
include/linux/nfs_xdr.h | 2 ++
8 files changed, 50 insertions(+), 39 deletions(-)
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 45966d9..1be8d3d 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -184,17 +184,6 @@ static inline void nfs_fs_proc_exit(void)
}
#endif
-/* nfs4namespace.c */
-#ifdef CONFIG_NFS_V4
-extern struct vfsmount *nfs_do_refmount(struct dentry *dentry);
-#else
-static inline
-struct vfsmount *nfs_do_refmount(struct dentry *dentry)
-{
- return ERR_PTR(-ENOENT);
-}
-#endif
-
/* callback_xdr.c */
extern struct svc_version nfs4_callback_version1;
extern struct svc_version nfs4_callback_version4;
@@ -279,6 +268,11 @@ extern void nfs_sb_deactive(struct super_block *sb);
extern char *nfs_path(char **p, struct dentry *dentry,
char *buffer, ssize_t buflen);
extern struct vfsmount *nfs_d_automount(struct path *path);
+struct vfsmount *nfs_submount(struct nfs_server *, struct dentry *,
+ struct nfs_fh *, struct nfs_fattr *);
+struct vfsmount *nfs_do_submount(struct dentry *, struct nfs_fh *,
+ struct nfs_fattr *, rpc_authflavor_t);
+
#ifdef CONFIG_NFS_V4
rpc_authflavor_t nfs_find_best_sec(struct nfs4_secinfo_flavors *);
#endif
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 9accf45..e36fd8a 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -26,11 +26,6 @@ static LIST_HEAD(nfs_automount_list);
static DECLARE_DELAYED_WORK(nfs_automount_task, nfs_expire_automounts);
int nfs_mountpoint_expiry_timeout = 500 * HZ;
-static struct vfsmount *nfs_do_submount(struct dentry *dentry,
- struct nfs_fh *fh,
- struct nfs_fattr *fattr,
- rpc_authflavor_t authflavor);
-
/*
* nfs_path - reconstruct the path given an arbitrary dentry
* @base - used to return pointer to the end of devname part of path
@@ -134,11 +129,8 @@ struct vfsmount *nfs_d_automount(struct path *path)
{
struct vfsmount *mnt;
struct nfs_server *server = NFS_SERVER(path->dentry->d_inode);
- struct dentry *parent;
struct nfs_fh *fh = NULL;
struct nfs_fattr *fattr = NULL;
- int err;
- rpc_authflavor_t flavor = RPC_AUTH_UNIX;
dprintk("--> nfs_d_automount()\n");
@@ -154,21 +146,7 @@ struct vfsmount *nfs_d_automount(struct path *path)
dprintk("%s: enter\n", __func__);
- /* Look it up again to get its attributes */
- parent = dget_parent(path->dentry);
- err = server->nfs_client->rpc_ops->lookup(server->client, parent->d_inode,
- &path->dentry->d_name,
- fh, fattr);
- dput(parent);
- if (err != 0) {
- mnt = ERR_PTR(err);
- goto out;
- }
-
- if (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL)
- mnt = nfs_do_refmount(path->dentry);
- else
- mnt = nfs_do_submount(path->dentry, fh, fattr, flavor);
+ mnt = server->nfs_client->rpc_ops->submount(server, path->dentry, fh, fattr);
if (IS_ERR(mnt))
goto out;
@@ -241,10 +219,8 @@ static struct vfsmount *nfs_do_clone_mount(struct nfs_server *server,
* @authflavor - security flavor to use when performing the mount
*
*/
-static struct vfsmount *nfs_do_submount(struct dentry *dentry,
- struct nfs_fh *fh,
- struct nfs_fattr *fattr,
- rpc_authflavor_t authflavor)
+struct vfsmount *nfs_do_submount(struct dentry *dentry, struct nfs_fh *fh,
+ struct nfs_fattr *fattr, rpc_authflavor_t authflavor)
{
struct nfs_clone_mount mountdata = {
.sb = dentry->d_sb,
@@ -277,3 +253,19 @@ out:
dprintk("<-- nfs_do_submount() = %p\n", mnt);
return mnt;
}
+
+struct vfsmount *nfs_submount(struct nfs_server *server, struct dentry *dentry,
+ struct nfs_fh *fh, struct nfs_fattr *fattr)
+{
+ int err;
+ struct dentry *parent = dget_parent(dentry);
+
+ /* Look it up again to get its attributes */
+ err = server->nfs_client->rpc_ops->lookup(server->client, parent->d_inode,
+ &dentry->d_name, fh, fattr);
+ dput(parent);
+ if (err != 0)
+ return ERR_PTR(err);
+
+ return nfs_do_submount(dentry, fh, fattr, server->client->cl_auth->au_flavor);
+}
diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c
index 5242eae..d39d1d7 100644
--- a/fs/nfs/nfs3proc.c
+++ b/fs/nfs/nfs3proc.c
@@ -876,6 +876,7 @@ const struct nfs_rpc_ops nfs_v3_clientops = {
.file_inode_ops = &nfs3_file_inode_operations,
.file_ops = &nfs_file_operations,
.getroot = nfs3_proc_get_root,
+ .submount = nfs_submount,
.getattr = nfs3_proc_getattr,
.setattr = nfs3_proc_setattr,
.lookup = nfs3_proc_lookup,
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 7df4520..640a499 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -207,6 +207,8 @@ extern const struct inode_operations nfs4_dir_inode_operations;
/* nfs4namespace.c */
struct rpc_clnt *nfs4_create_sec_client(struct rpc_clnt *, struct inode *, struct qstr *);
int nfs4_proc_secinfo(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *);
+struct vfsmount *nfs4_submount(struct nfs_server *, struct dentry *,
+ struct nfs_fh *, struct nfs_fattr *);
/* nfs4proc.c */
extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *);
diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c
index e01cd03..b6baa6e 100644
--- a/fs/nfs/nfs4namespace.c
+++ b/fs/nfs/nfs4namespace.c
@@ -305,7 +305,7 @@ out:
* @dentry - dentry of referral
*
*/
-struct vfsmount *nfs_do_refmount(struct dentry *dentry)
+static struct vfsmount *nfs_do_refmount(struct dentry *dentry)
{
struct vfsmount *mnt = ERR_PTR(-ENOMEM);
struct dentry *parent;
@@ -346,3 +346,21 @@ out:
dprintk("%s: done\n", __func__);
return mnt;
}
+
+struct vfsmount *nfs4_submount(struct nfs_server *server, struct dentry *dentry,
+ struct nfs_fh *fh, struct nfs_fattr *fattr)
+{
+ int err;
+ struct dentry *parent = dget_parent(dentry);
+
+ /* Look it up again to get its attributes */
+ err = server->nfs_client->rpc_ops->lookup(server->client, parent->d_inode,
+ &dentry->d_name, fh, fattr);
+ dput(parent);
+ if (err != 0)
+ return ERR_PTR(err);
+
+ if (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL)
+ return nfs_do_refmount(dentry);
+ return nfs_do_submount(dentry, fh, fattr, server->client->cl_auth->au_flavor);
+}
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 9b70b13..3da1d7a 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -6537,6 +6537,7 @@ const struct nfs_rpc_ops nfs_v4_clientops = {
.file_inode_ops = &nfs4_file_inode_operations,
.file_ops = &nfs4_file_operations,
.getroot = nfs4_proc_get_root,
+ .submount = nfs4_submount,
.getattr = nfs4_proc_getattr,
.setattr = nfs4_proc_setattr,
.lookup = nfs4_proc_lookup,
diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c
index b63b6f4..8dfe960 100644
--- a/fs/nfs/proc.c
+++ b/fs/nfs/proc.c
@@ -733,6 +733,7 @@ const struct nfs_rpc_ops nfs_v2_clientops = {
.file_inode_ops = &nfs_file_inode_operations,
.file_ops = &nfs_file_operations,
.getroot = nfs_proc_get_root,
+ .submount = nfs_submount,
.getattr = nfs_proc_getattr,
.setattr = nfs_proc_setattr,
.lookup = nfs_proc_lookup,
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index f03c832..fbacdc8 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1229,6 +1229,8 @@ struct nfs_rpc_ops {
int (*getroot) (struct nfs_server *, struct nfs_fh *,
struct nfs_fsinfo *);
+ struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
+ struct nfs_fh *, struct nfs_fattr *);
int (*getattr) (struct nfs_server *, struct nfs_fh *,
struct nfs_fattr *);
int (*setattr) (struct dentry *, struct nfs_fattr *,
--
1.7.10
--
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
