userns: Convert ecryptfs to use kuid/kgid where appropriate

Cc: Tyler Hicks <tyhicks@canonical.com>
Cc: Dustin Kirkland <dustin.kirkland@gazzang.com>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>

2 files changed, 5 insertions, 5 deletions

diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index 2768138eefee..1d6ce91b7061 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -544,11 +544,12 @@ static struct dentry *ecryptfs_mount(struct file_system_type *fs_type, int flags
                 goto out_free;
         }
 
-        if (check_ruid && path.dentry->d_inode->i_uid != current_uid()) {
+        if (check_ruid && !uid_eq(path.dentry->d_inode->i_uid, current_uid())) {
                 rc = -EPERM;
                 printk(KERN_ERR "Mount of device (uid: %d) not owned by "
                        "requested user (uid: %d)\n",
-                       path.dentry->d_inode->i_uid, current_uid());
+                        i_uid_read(path.dentry->d_inode),
+                        from_kuid(&init_user_ns, current_uid()));
                 goto out_free;
         }
 
diff --git a/fs/ecryptfs/messaging.c b/fs/ecryptfs/messaging.c
index b29bb8bfa8d9..5fa2471796c2 100644
--- a/fs/ecryptfs/messaging.c
+++ b/fs/ecryptfs/messaging.c
@@ -33,7 +33,7 @@ static struct hlist_head *ecryptfs_daemon_hash;
 struct mutex ecryptfs_daemon_hash_mux;
 static int ecryptfs_hash_bits;
 #define ecryptfs_current_euid_hash(uid) \
-                hash_long((unsigned long)current_euid(), ecryptfs_hash_bits)
+        hash_long((unsigned long)from_kuid(&init_user_ns, current_euid()), ecryptfs_hash_bits)
 
 static u32 ecryptfs_msg_counter;
 static struct ecryptfs_msg_ctx *ecryptfs_msg_ctx_arr;
@@ -121,8 +121,7 @@ int ecryptfs_find_daemon_by_euid(struct ecryptfs_daemon **daemon)
         hlist_for_each_entry(*daemon, elem,
                             &ecryptfs_daemon_hash[ecryptfs_current_euid_hash()],
                             euid_chain) {
-                if ((*daemon)->file->f_cred->euid == current_euid() &&
-                    (*daemon)->file->f_cred->user_ns == current_user_ns()) {
+                if (uid_eq((*daemon)->file->f_cred->euid, current_euid())) {
                         rc = 0;
                         goto out;
                 }