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>
diff --git a/include/linux/nfsd/nfsd.h b/include/linux/nfsd/nfsd.h
index 03bbe9039..510ffdd 100644
--- a/include/linux/nfsd/nfsd.h
+++ b/include/linux/nfsd/nfsd.h
@@ -60,7 +60,7 @@
extern unsigned int nfsd_drc_max_mem;
extern unsigned int nfsd_drc_mem_used;
-extern struct seq_operations nfs_exports_op;
+extern const struct seq_operations nfs_exports_op;
/*
* Function prototypes.