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NFS: Add label lifecycle management

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This patch adds the lifecycle management for the security label structure
introduced in an earlier patch. The label is not used yet but allocations and
freeing of the structure is handled.

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>
This commit is contained in:
David Quigley
2013-05-22 12:50:43 -04:00
committed by Trond Myklebust
parent 1775fd3e80
commit 14c43f7678
3 changed files with 96 additions and 11 deletions
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23
fs/nfs/dir.c
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@@ -585,10 +585,16 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
if (entry.fh == NULL || entry.fattr == NULL)
goto out;
entry.label = nfs4_label_alloc(NFS_SERVER(inode), GFP_NOWAIT);
if (IS_ERR(entry.label)) {
status = PTR_ERR(entry.label);
goto out;
}
array = nfs_readdir_get_array(page);
if (IS_ERR(array)) {
status = PTR_ERR(array);
goto out;
goto out_label_free;
}
memset(array, 0, sizeof(struct nfs_cache_array));
array->eof_index = -1;
@@ -614,6 +620,8 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
nfs_readdir_free_large_page(pages_ptr, pages, array_size);
out_release_array:
nfs_readdir_release_array(page);
out_label_free:
nfs4_label_free(entry.label);
out:
nfs_free_fattr(entry.fattr);
nfs_free_fhandle(entry.fh);
@@ -1083,6 +1091,10 @@ static int nfs_lookup_revalidate(struct dentry *dentry, unsigned int flags)
if (fhandle == NULL || fattr == NULL)
goto out_error;
label = nfs4_label_alloc(NFS_SERVER(inode), GFP_NOWAIT);
if (IS_ERR(label))
goto out_error;
error = NFS_PROTO(dir)->lookup(dir, &dentry->d_name, fhandle, fattr, label);
if (error)
goto out_bad;
@@ -1093,6 +1105,8 @@ static int nfs_lookup_revalidate(struct dentry *dentry, unsigned int flags)
nfs_free_fattr(fattr);
nfs_free_fhandle(fhandle);
nfs4_label_free(label);
out_set_verifier:
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
out_valid:
@@ -1109,6 +1123,7 @@ out_zap_parent:
out_bad:
nfs_free_fattr(fattr);
nfs_free_fhandle(fhandle);
nfs4_label_free(label);
nfs_mark_for_revalidate(dir);
if (inode && S_ISDIR(inode->i_mode)) {
/* Purge readdir caches. */
@@ -1129,6 +1144,7 @@ out_zap_parent:
out_error:
nfs_free_fattr(fattr);
nfs_free_fhandle(fhandle);
nfs4_label_free(label);
dput(parent);
dfprintk(LOOKUPCACHE, "NFS: %s(%s/%s) lookup returned error %d\n",
__func__, dentry->d_parent->d_name.name,
@@ -1284,6 +1300,10 @@ struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, unsigned in
if (fhandle == NULL || fattr == NULL)
goto out;
label = nfs4_label_alloc(NFS_SERVER(dir), GFP_NOWAIT);
if (IS_ERR(label))
goto out;
parent = dentry->d_parent;
/* Protect against concurrent sillydeletes */
nfs_block_sillyrename(parent);
@@ -1312,6 +1332,7 @@ no_entry:
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
out_unblock_sillyrename:
nfs_unblock_sillyrename(parent);
nfs4_label_free(label);
out:
nfs_free_fattr(fattr);
nfs_free_fhandle(fhandle);