NFS:Add labels to client function prototypes

After looking at all of the nfsv4 operations the label structure has been added
to the prototypes of the functions which can transmit label data.

Signed-off-by: Matthew N. Dodd <Matthew.Dodd@sparta.com>
Signed-off-by: Miguel Rodel Felipe <Rodel_FM@dsi.a-star.edu.sg>
Signed-off-by: Phua Eu Gene <PHUA_Eu_Gene@dsi.a-star.edu.sg>
Signed-off-by: Khin Mi Mi Aung <Mi_Mi_AUNG@dsi.a-star.edu.sg>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index bcf60f1..004de20 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -77,11 +77,12 @@
 static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
 static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *);
 static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr);
-static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *);
-static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
+static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label);
+static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label);
 static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
 			    struct nfs_fattr *fattr, struct iattr *sattr,
-			    struct nfs4_state *state);
+			    struct nfs4_state *state, struct nfs4_label *ilabel,
+			    struct nfs4_label *olabel);
 #ifdef CONFIG_NFS_V4_1
 static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *);
 static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *);
@@ -762,6 +763,7 @@
 	struct nfs4_string owner_name;
 	struct nfs4_string group_name;
 	struct nfs_fattr f_attr;
+	struct nfs4_label *f_label;
 	struct dentry *dir;
 	struct dentry *dentry;
 	struct nfs4_state_owner *owner;
@@ -807,6 +809,7 @@
 static void nfs4_init_opendata_res(struct nfs4_opendata *p)
 {
 	p->o_res.f_attr = &p->f_attr;
+	p->o_res.f_label = p->f_label;
 	p->o_res.seqid = p->o_arg.seqid;
 	p->c_res.seqid = p->c_arg.seqid;
 	p->o_res.server = p->o_arg.server;
@@ -818,6 +821,7 @@
 static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry,
 		struct nfs4_state_owner *sp, fmode_t fmode, int flags,
 		const struct iattr *attrs,
+		struct nfs4_label *label,
 		enum open_claim_type4 claim,
 		gfp_t gfp_mask)
 {
@@ -854,6 +858,7 @@
 	p->o_arg.server = server;
 	p->o_arg.bitmask = server->attr_bitmask;
 	p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0];
+	p->o_arg.label = label;
 	p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim);
 	switch (p->o_arg.claim) {
 	case NFS4_OPEN_CLAIM_NULL:
@@ -1205,7 +1210,7 @@
 	ret = -EAGAIN;
 	if (!(data->f_attr.valid & NFS_ATTR_FATTR))
 		goto err;
-	inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr);
+	inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label);
 	ret = PTR_ERR(inode);
 	if (IS_ERR(inode))
 		goto err;
@@ -1258,7 +1263,7 @@
 	struct nfs4_opendata *opendata;
 
 	opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0,
-			NULL, claim, GFP_NOFS);
+			NULL, NULL, claim, GFP_NOFS);
 	if (opendata == NULL)
 		return ERR_PTR(-ENOMEM);
 	opendata->state = state;
@@ -1784,7 +1789,7 @@
 			return status;
 	}
 	if (!(o_res->f_attr->valid & NFS_ATTR_FATTR))
-		_nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr);
+		_nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label);
 	return 0;
 }
 
@@ -1982,6 +1987,7 @@
 			fmode_t fmode,
 			int flags,
 			struct iattr *sattr,
+			struct nfs4_label *label,
 			struct rpc_cred *cred,
 			struct nfs4_state **res,
 			struct nfs4_threshold **ctx_th)
@@ -1991,6 +1997,7 @@
 	struct nfs_server       *server = NFS_SERVER(dir);
 	struct nfs4_opendata *opendata;
 	enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL;
+	struct nfs4_label *olabel = NULL;
 	int status;
 
 	/* Protect against reboot recovery conflicts */
@@ -2009,7 +2016,7 @@
 	if (dentry->d_inode)
 		claim = NFS4_OPEN_CLAIM_FH;
 	opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr,
-			claim, GFP_KERNEL);
+			label, claim, GFP_KERNEL);
 	if (opendata == NULL)
 		goto err_put_state_owner;
 
@@ -2033,10 +2040,11 @@
 		nfs_fattr_init(opendata->o_res.f_attr);
 		status = nfs4_do_setattr(state->inode, cred,
 				opendata->o_res.f_attr, sattr,
-				state);
-		if (status == 0)
+				state, label, olabel);
+		if (status == 0) {
 			nfs_setattr_update_inode(state->inode, sattr);
-		nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr);
+			nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr);
+		}
 	}
 
 	if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server))
@@ -2065,6 +2073,7 @@
 					fmode_t fmode,
 					int flags,
 					struct iattr *sattr,
+					struct nfs4_label *label,
 					struct rpc_cred *cred,
 					struct nfs4_threshold **ctx_th)
 {
@@ -2075,7 +2084,7 @@
 
 	fmode &= FMODE_READ|FMODE_WRITE|FMODE_EXEC;
 	do {
-		status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, cred,
+		status = _nfs4_do_open(dir, dentry, fmode, flags, sattr, label, cred,
 				       &res, ctx_th);
 		if (status == 0)
 			break;
@@ -2122,7 +2131,8 @@
 
 static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
 			    struct nfs_fattr *fattr, struct iattr *sattr,
-			    struct nfs4_state *state)
+			    struct nfs4_state *state, struct nfs4_label *ilabel,
+			    struct nfs4_label *olabel)
 {
 	struct nfs_server *server = NFS_SERVER(inode);
         struct nfs_setattrargs  arg = {
@@ -2130,9 +2140,11 @@
                 .iap            = sattr,
 		.server		= server,
 		.bitmask = server->attr_bitmask,
+		.label		= ilabel,
         };
         struct nfs_setattrres  res = {
 		.fattr		= fattr,
+		.label		= olabel,
 		.server		= server,
         };
         struct rpc_message msg = {
@@ -2172,7 +2184,8 @@
 
 static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
 			   struct nfs_fattr *fattr, struct iattr *sattr,
-			   struct nfs4_state *state)
+			   struct nfs4_state *state, struct nfs4_label *ilabel,
+			   struct nfs4_label *olabel)
 {
 	struct nfs_server *server = NFS_SERVER(inode);
 	struct nfs4_exception exception = {
@@ -2181,7 +2194,7 @@
 	};
 	int err;
 	do {
-		err = _nfs4_do_setattr(inode, cred, fattr, sattr, state);
+		err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel);
 		switch (err) {
 		case -NFS4ERR_OPENMODE:
 			if (!(sattr->ia_valid & ATTR_SIZE)) {
@@ -2426,9 +2439,10 @@
 nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx, int open_flags, struct iattr *attr)
 {
 	struct nfs4_state *state;
+	struct nfs4_label *label = NULL;
 
 	/* Protect against concurrent sillydeletes */
-	state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr,
+	state = nfs4_do_open(dir, ctx->dentry, ctx->mode, open_flags, attr, label,
 			     ctx->cred, &ctx->mdsthreshold);
 	if (IS_ERR(state))
 		return ERR_CAST(state);
@@ -2648,6 +2662,7 @@
 {
 	int error;
 	struct nfs_fattr *fattr = info->fattr;
+	struct nfs4_label *label = NULL;
 
 	error = nfs4_server_capabilities(server, mntfh);
 	if (error < 0) {
@@ -2655,7 +2670,7 @@
 		return error;
 	}
 
-	error = nfs4_proc_getattr(server, mntfh, fattr);
+	error = nfs4_proc_getattr(server, mntfh, fattr, label);
 	if (error < 0) {
 		dprintk("nfs4_get_root: getattr error = %d\n", -error);
 		return error;
@@ -2711,7 +2726,8 @@
 	return status;
 }
 
-static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
+static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
+				struct nfs_fattr *fattr, struct nfs4_label *label)
 {
 	struct nfs4_getattr_arg args = {
 		.fh = fhandle,
@@ -2719,6 +2735,7 @@
 	};
 	struct nfs4_getattr_res res = {
 		.fattr = fattr,
+		.label = label,
 		.server = server,
 	};
 	struct rpc_message msg = {
@@ -2731,13 +2748,14 @@
 	return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
 }
 
-static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
+static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
+				struct nfs_fattr *fattr, struct nfs4_label *label)
 {
 	struct nfs4_exception exception = { };
 	int err;
 	do {
 		err = nfs4_handle_exception(server,
-				_nfs4_proc_getattr(server, fhandle, fattr),
+				_nfs4_proc_getattr(server, fhandle, fattr, label),
 				&exception);
 	} while (exception.retry);
 	return err;
@@ -2793,7 +2811,7 @@
 		}
 	}
 
-	status = nfs4_do_setattr(inode, cred, fattr, sattr, state);
+	status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, NULL);
 	if (status == 0)
 		nfs_setattr_update_inode(inode, sattr);
 	return status;
@@ -2801,7 +2819,7 @@
 
 static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir,
 		const struct qstr *name, struct nfs_fh *fhandle,
-		struct nfs_fattr *fattr)
+		struct nfs_fattr *fattr, struct nfs4_label *label)
 {
 	struct nfs_server *server = NFS_SERVER(dir);
 	int		       status;
@@ -2839,13 +2857,13 @@
 
 static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir,
 				   struct qstr *name, struct nfs_fh *fhandle,
-				   struct nfs_fattr *fattr)
+				   struct nfs_fattr *fattr, struct nfs4_label *label)
 {
 	struct nfs4_exception exception = { };
 	struct rpc_clnt *client = *clnt;
 	int err;
 	do {
-		err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr);
+		err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label);
 		switch (err) {
 		case -NFS4ERR_BADNAME:
 			err = -ENOENT;
@@ -2879,12 +2897,13 @@
 }
 
 static int nfs4_proc_lookup(struct inode *dir, struct qstr *name,
-			    struct nfs_fh *fhandle, struct nfs_fattr *fattr)
+			    struct nfs_fh *fhandle, struct nfs_fattr *fattr,
+			    struct nfs4_label *label)
 {
 	int status;
 	struct rpc_clnt *client = NFS_CLIENT(dir);
 
-	status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr);
+	status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label);
 	if (client != NFS_CLIENT(dir)) {
 		rpc_shutdown_client(client);
 		nfs_fixup_secinfo_attributes(fattr);
@@ -2899,7 +2918,7 @@
 	int status;
 	struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir));
 
-	status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr);
+	status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL);
 	if (status < 0) {
 		rpc_shutdown_client(client);
 		return ERR_PTR(status);
@@ -3029,6 +3048,7 @@
 nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
 		 int flags)
 {
+	struct nfs4_label *ilabel = NULL;
 	struct nfs_open_context *ctx;
 	struct nfs4_state *state;
 	int status = 0;
@@ -3039,7 +3059,7 @@
 
 	sattr->ia_mode &= ~current_umask();
 	state = nfs4_do_open(dir, dentry, ctx->mode,
-			flags, sattr, ctx->cred,
+			flags, sattr, ilabel, ctx->cred,
 			&ctx->mdsthreshold);
 	d_drop(dentry);
 	if (IS_ERR(state)) {
@@ -3207,6 +3227,7 @@
 	};
 	struct nfs4_link_res res = {
 		.server = server,
+		.label = NULL,
 	};
 	struct rpc_message msg = {
 		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK],
@@ -3247,6 +3268,7 @@
 	struct nfs4_create_res res;
 	struct nfs_fh fh;
 	struct nfs_fattr fattr;
+	struct nfs4_label *label;
 };
 
 static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir,
@@ -3270,6 +3292,7 @@
 		data->res.server = server;
 		data->res.fh = &data->fh;
 		data->res.fattr = &data->fattr;
+		data->res.label = data->label;
 		nfs_fattr_init(data->res.fattr);
 	}
 	return data;
@@ -3281,7 +3304,7 @@
 				    &data->arg.seq_args, &data->res.seq_res, 1);
 	if (status == 0) {
 		update_changeattr(dir, &data->res.dir_cinfo);
-		status = nfs_instantiate(dentry, data->res.fh, data->res.fattr);
+		status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label);
 	}
 	return status;
 }
@@ -3292,7 +3315,8 @@
 }
 
 static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
-		struct page *page, unsigned int len, struct iattr *sattr)
+		struct page *page, unsigned int len, struct iattr *sattr,
+		struct nfs4_label *label)
 {
 	struct nfs4_createdata *data;
 	int status = -ENAMETOOLONG;
@@ -3308,6 +3332,7 @@
 	data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK];
 	data->arg.u.symlink.pages = &page;
 	data->arg.u.symlink.len = len;
+	data->arg.label = label;
 	
 	status = nfs4_do_create(dir, dentry, data);
 
@@ -3320,18 +3345,19 @@
 		struct page *page, unsigned int len, struct iattr *sattr)
 {
 	struct nfs4_exception exception = { };
+	struct nfs4_label *label = NULL;
 	int err;
 	do {
 		err = nfs4_handle_exception(NFS_SERVER(dir),
 				_nfs4_proc_symlink(dir, dentry, page,
-							len, sattr),
+							len, sattr, label),
 				&exception);
 	} while (exception.retry);
 	return err;
 }
 
 static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
-		struct iattr *sattr)
+		struct iattr *sattr, struct nfs4_label *label)
 {
 	struct nfs4_createdata *data;
 	int status = -ENOMEM;
@@ -3340,6 +3366,7 @@
 	if (data == NULL)
 		goto out;
 
+	data->arg.label = label;
 	status = nfs4_do_create(dir, dentry, data);
 
 	nfs4_free_createdata(data);
@@ -3351,12 +3378,13 @@
 		struct iattr *sattr)
 {
 	struct nfs4_exception exception = { };
+	struct nfs4_label *label = NULL;
 	int err;
 
 	sattr->ia_mode &= ~current_umask();
 	do {
 		err = nfs4_handle_exception(NFS_SERVER(dir),
-				_nfs4_proc_mkdir(dir, dentry, sattr),
+				_nfs4_proc_mkdir(dir, dentry, sattr, label),
 				&exception);
 	} while (exception.retry);
 	return err;
@@ -3441,7 +3469,7 @@
 		status = -EINVAL;
 		goto out_free;
 	}
-	
+
 	status = nfs4_do_create(dir, dentry, data);
 out_free:
 	nfs4_free_createdata(data);