seq_file: constify seq_operations

Make all seq_operations structs const, to help mitigate against
revectoring user-triggerable function pointers.

This is derived from the grsecurity patch, although generated from scratch
because it's simpler than extracting the changes from there.

Signed-off-by: James Morris <jmorris@namei.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/fs/afs/proc.c b/fs/afs/proc.c
index 8630615e57f..852739d262a 100644
--- a/fs/afs/proc.c
+++ b/fs/afs/proc.c
@@ -28,7 +28,7 @@ static int afs_proc_cells_show(struct seq_file *m, void *v);
 static ssize_t afs_proc_cells_write(struct file *file, const char __user *buf,
                                     size_t size, loff_t *_pos);
 
-static struct seq_operations afs_proc_cells_ops = {
+static const struct seq_operations afs_proc_cells_ops = {
         .start  = afs_proc_cells_start,
         .next   = afs_proc_cells_next,
         .stop   = afs_proc_cells_stop,
@@ -70,7 +70,7 @@ static void *afs_proc_cell_volumes_next(struct seq_file *p, void *v,
 static void afs_proc_cell_volumes_stop(struct seq_file *p, void *v);
 static int afs_proc_cell_volumes_show(struct seq_file *m, void *v);
 
-static struct seq_operations afs_proc_cell_volumes_ops = {
+static const struct seq_operations afs_proc_cell_volumes_ops = {
         .start  = afs_proc_cell_volumes_start,
         .next   = afs_proc_cell_volumes_next,
         .stop   = afs_proc_cell_volumes_stop,
@@ -95,7 +95,7 @@ static void *afs_proc_cell_vlservers_next(struct seq_file *p, void *v,
 static void afs_proc_cell_vlservers_stop(struct seq_file *p, void *v);
 static int afs_proc_cell_vlservers_show(struct seq_file *m, void *v);
 
-static struct seq_operations afs_proc_cell_vlservers_ops = {
+static const struct seq_operations afs_proc_cell_vlservers_ops = {
         .start  = afs_proc_cell_vlservers_start,
         .next   = afs_proc_cell_vlservers_next,
         .stop   = afs_proc_cell_vlservers_stop,
@@ -119,7 +119,7 @@ static void *afs_proc_cell_servers_next(struct seq_file *p, void *v,
 static void afs_proc_cell_servers_stop(struct seq_file *p, void *v);
 static int afs_proc_cell_servers_show(struct seq_file *m, void *v);
 
-static struct seq_operations afs_proc_cell_servers_ops = {
+static const struct seq_operations afs_proc_cell_servers_ops = {
         .start  = afs_proc_cell_servers_start,
         .next   = afs_proc_cell_servers_next,
         .stop   = afs_proc_cell_servers_stop,