io_uring: ensure that SQPOLL thread is started for exit

[linux-2.6-microblaze.git] / fs / nfs / getroot.c

diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c
index b012c26..aaeeb46 100644 (file)
--- a/fs/nfs/getroot.c
+++ b/fs/nfs/getroot.c
@@ -73,6 +73,7 @@ int nfs_get_root(struct super_block *s, struct fs_context *fc)
        struct inode *inode;
        char *name;
        int error = -ENOMEM;
+       unsigned long kflags = 0, kflags_out = 0;
 
        name = kstrdup(fc->source, GFP_KERNEL);
        if (!name)
@@ -83,11 +84,14 @@ int nfs_get_root(struct super_block *s, struct fs_context *fc)
        if (fsinfo.fattr == NULL)
                goto out_name;
 
+       fsinfo.fattr->label = nfs4_label_alloc(server, GFP_KERNEL);
+       if (IS_ERR(fsinfo.fattr->label))
+               goto out_fattr;
        error = server->nfs_client->rpc_ops->getroot(server, ctx->mntfh, &fsinfo);
        if (error < 0) {
                dprintk("nfs_get_root: getattr error = %d\n", -error);
                nfs_errorf(fc, "NFS: Couldn't getattr on root");
-               goto out_fattr;
+               goto out_label;
        }
 
        inode = nfs_fhget(s, ctx->mntfh, fsinfo.fattr, NULL);
@@ -95,12 +99,12 @@ int nfs_get_root(struct super_block *s, struct fs_context *fc)
                dprintk("nfs_get_root: get root inode failed\n");
                error = PTR_ERR(inode);
                nfs_errorf(fc, "NFS: Couldn't get root inode");
-               goto out_fattr;
+               goto out_label;
        }
 
        error = nfs_superblock_set_dummy_root(s, inode);
        if (error != 0)
-               goto out_fattr;
+               goto out_label;
 
        /* root dentries normally start off anonymous and get spliced in later
         * if the dentry tree reaches them; however if the dentry already
@@ -111,7 +115,7 @@ int nfs_get_root(struct super_block *s, struct fs_context *fc)
                dprintk("nfs_get_root: get root dentry failed\n");
                error = PTR_ERR(root);
                nfs_errorf(fc, "NFS: Couldn't get root dentry");
-               goto out_fattr;
+               goto out_label;
        }
 
        security_d_instantiate(root, inode);
@@ -123,12 +127,39 @@ int nfs_get_root(struct super_block *s, struct fs_context *fc)
        }
        spin_unlock(&root->d_lock);
        fc->root = root;
+       if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL)
+               kflags |= SECURITY_LSM_NATIVE_LABELS;
+       if (ctx->clone_data.sb) {
+               if (d_inode(fc->root)->i_fop != &nfs_dir_operations) {
+                       error = -ESTALE;
+                       goto error_splat_root;
+               }
+               /* clone lsm security options from the parent to the new sb */
+               error = security_sb_clone_mnt_opts(ctx->clone_data.sb,
+                                                  s, kflags, &kflags_out);
+       } else {
+               error = security_sb_set_mnt_opts(s, fc->security,
+                                                       kflags, &kflags_out);
+       }
+       if (error)
+               goto error_splat_root;
+       if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL &&
+               !(kflags_out & SECURITY_LSM_NATIVE_LABELS))
+               NFS_SB(s)->caps &= ~NFS_CAP_SECURITY_LABEL;
+
+       nfs_setsecurity(inode, fsinfo.fattr, fsinfo.fattr->label);
        error = 0;
 
+out_label:
+       nfs4_label_free(fsinfo.fattr->label);
 out_fattr:
        nfs_free_fattr(fsinfo.fattr);
 out_name:
        kfree(name);
 out:
        return error;
+error_splat_root:
+       dput(fc->root);
+       fc->root = NULL;
+       goto out_label;
 }