[PATCH v3 02/18] ecryptfs: stack fileattr ops

[Miklos Szeredi]

Add stacking for the fileattr operations.

Signed-off-by: Miklos Szeredi <mszer...@redhat.com>
Cc: Tyler Hicks <c...@tyhicks.com>
---
 fs/ecryptfs/inode.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 18e9285fbb4c..7169ea873347 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -18,6 +18,7 @@
 #include <linux/fs_stack.h>
 #include <linux/slab.h>
 #include <linux/xattr.h>
+#include <linux/fileattr.h>
 #include <asm/unaligned.h>
 #include "ecryptfs_kernel.h"
 
@@ -1118,6 +1119,23 @@ static int ecryptfs_removexattr(struct dentry *dentry, 
struct inode *inode,
        return rc;
 }
 
+static int ecryptfs_fileattr_get(struct dentry *dentry, struct fileattr *fa)
+{
+       return vfs_fileattr_get(ecryptfs_dentry_to_lower(dentry), fa);
+}
+
+static int ecryptfs_fileattr_set(struct user_namespace *mnt_userns,
+                                struct dentry *dentry, struct fileattr *fa)
+{
+       struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry);
+       int rc;
+
+       rc = vfs_fileattr_set(&init_user_ns, lower_dentry, fa);
+       fsstack_copy_attr_all(d_inode(dentry), d_inode(lower_dentry));
+
+       return rc;
+}
+
 const struct inode_operations ecryptfs_symlink_iops = {
        .get_link = ecryptfs_get_link,
        .permission = ecryptfs_permission,
@@ -1139,6 +1157,8 @@ const struct inode_operations ecryptfs_dir_iops = {
        .permission = ecryptfs_permission,
        .setattr = ecryptfs_setattr,
        .listxattr = ecryptfs_listxattr,
+       .fileattr_get = ecryptfs_fileattr_get,
+       .fileattr_set = ecryptfs_fileattr_set,
 };
 
 const struct inode_operations ecryptfs_main_iops = {
@@ -1146,6 +1166,8 @@ const struct inode_operations ecryptfs_main_iops = {
        .setattr = ecryptfs_setattr,
        .getattr = ecryptfs_getattr,
        .listxattr = ecryptfs_listxattr,
+       .fileattr_get = ecryptfs_fileattr_get,
+       .fileattr_set = ecryptfs_fileattr_set,
 };
 
 static int ecryptfs_xattr_get(const struct xattr_handler *handler,
-- 
2.30.2