KVM: arm64: vgic-v3: Add ICV_IAR1_EL1 handler

[mirror_ubuntu-zesty-kernel.git] / fs / namei.c

diff --git a/fs/namei.c b/fs/namei.c
index ad74877e1442c0c9ea5fca87b065e59090088b10..169b2a0d0d34f0da7217b53049c2d9bddd484744 100644 (file)
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -888,8 +888,8 @@ static inline void put_link(struct nameidata *nd)
                path_put(&last->link);
 }
 
-int sysctl_protected_symlinks __read_mostly = 0;
-int sysctl_protected_hardlinks __read_mostly = 0;
+int sysctl_protected_symlinks __read_mostly = 1;
+int sysctl_protected_hardlinks __read_mostly = 1;
 
 /**
  * may_follow_link - Check symlink following for unsafe situations
@@ -1100,7 +1100,6 @@ static int follow_automount(struct path *path, struct nameidata *nd,
                            bool *need_mntput)
 {
        struct vfsmount *mnt;
-       const struct cred *old_cred;
        int err;
 
        if (!path->dentry->d_op || !path->dentry->d_op->d_automount)
@@ -1129,9 +1128,7 @@ static int follow_automount(struct path *path, struct nameidata *nd,
        if (nd->total_link_count >= 40)
                return -ELOOP;
 
-       old_cred = override_creds(&init_cred);
        mnt = path->dentry->d_op->d_automount(path);
-       revert_creds(old_cred);
        if (IS_ERR(mnt)) {
                /*
                 * The filesystem is allowed to return -EISDIR here to indicate
@@ -4299,11 +4296,11 @@ int vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 {
        int error;
        bool is_dir = d_is_dir(old_dentry);
-       const unsigned char *old_name;
        struct inode *source = old_dentry->d_inode;
        struct inode *target = new_dentry->d_inode;
        bool new_is_dir = false;
        unsigned max_links = new_dir->i_sb->s_max_links;
+       struct name_snapshot old_name;
 
        if (source == target)
                return 0;
@@ -4350,7 +4347,7 @@ int vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
        if (error)
                return error;
 
-       old_name = fsnotify_oldname_init(old_dentry->d_name.name);
+       take_dentry_name_snapshot(&old_name, old_dentry);
        dget(new_dentry);
        if (!is_dir || (flags & RENAME_EXCHANGE))
                lock_two_nondirectories(source, target);
@@ -4405,14 +4402,14 @@ out:
                inode_unlock(target);
        dput(new_dentry);
        if (!error) {
-               fsnotify_move(old_dir, new_dir, old_name, is_dir,
+               fsnotify_move(old_dir, new_dir, old_name.name, is_dir,
                              !(flags & RENAME_EXCHANGE) ? target : NULL, old_dentry);
                if (flags & RENAME_EXCHANGE) {
                        fsnotify_move(new_dir, old_dir, old_dentry->d_name.name,
                                      new_is_dir, NULL, new_dentry);
                }
        }
-       fsnotify_oldname_free(old_name);
+       release_dentry_name_snapshot(&old_name);
 
        return error;
 }