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kernfs: move kernfs_xattr_handlers to .rodata

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This makes it harder for accidental or malicious changes to
kernfs_xattr_handlers at runtime.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Wedson Almeida Filho <walmeida@microsoft.com>
Link: https://lore.kernel.org/r/20230930050033.41174-18-wedsonaf@gmail.com
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Wedson Almeida Filho 2023-09-30 02:00:21 -03:00 committed by Christian Brauner
parent ea780283e2
commit ffb2e06508
No known key found for this signature in database
GPG Key ID: 91C61BC06578DCA2
2 changed files with 2 additions and 2 deletions
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2
fs/kernfs/inode.c
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@ -445,7 +445,7 @@ static const struct xattr_handler kernfs_user_xattr_handler = {
.set = kernfs_vfs_user_xattr_set,
};
const struct xattr_handler *kernfs_xattr_handlers[] = {
const struct xattr_handler * const kernfs_xattr_handlers[] = {
&kernfs_trusted_xattr_handler,
&kernfs_security_xattr_handler,
&kernfs_user_xattr_handler,

2
fs/kernfs/kernfs-internal.h
View File

@ -127,7 +127,7 @@ extern struct kmem_cache *kernfs_node_cache, *kernfs_iattrs_cache;
/*
* inode.c
*/
extern const struct xattr_handler *kernfs_xattr_handlers[];
extern const struct xattr_handler * const kernfs_xattr_handlers[];
void kernfs_evict_inode(struct inode *inode);
int kernfs_iop_permission(struct mnt_idmap *idmap,
struct inode *inode, int mask);