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ext2: move ext2_xattr_handlers and ext2_xattr_handler_map to .rodata

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This makes it harder for accidental or malicious changes to
ext2_xattr_handlers or ext2_xattr_handler_map at runtime.

Cc: Jan Kara <jack@suse.com>
Cc: linux-ext4@vger.kernel.org
Signed-off-by: Wedson Almeida Filho <walmeida@microsoft.com>
Link: https://lore.kernel.org/r/20230930050033.41174-10-wedsonaf@gmail.com
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Wedson Almeida Filho 2023-09-30 02:00:13 -03:00 committed by Christian Brauner
parent 3591f40e22
commit ce78a1ec1c
No known key found for this signature in database
GPG Key ID: 91C61BC06578DCA2
2 changed files with 3 additions and 3 deletions
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4
fs/ext2/xattr.c
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@ -98,7 +98,7 @@ static struct buffer_head *ext2_xattr_cache_find(struct inode *,
static void ext2_xattr_rehash(struct ext2_xattr_header *,
struct ext2_xattr_entry *);
static const struct xattr_handler *ext2_xattr_handler_map[] = {
static const struct xattr_handler * const ext2_xattr_handler_map[] = {
[EXT2_XATTR_INDEX_USER] = &ext2_xattr_user_handler,
#ifdef CONFIG_EXT2_FS_POSIX_ACL
[EXT2_XATTR_INDEX_POSIX_ACL_ACCESS] = &nop_posix_acl_access,
@ -110,7 +110,7 @@ static const struct xattr_handler *ext2_xattr_handler_map[] = {
#endif
};
const struct xattr_handler *ext2_xattr_handlers[] = {
const struct xattr_handler * const ext2_xattr_handlers[] = {
&ext2_xattr_user_handler,
&ext2_xattr_trusted_handler,
#ifdef CONFIG_EXT2_FS_SECURITY

2
fs/ext2/xattr.h
View File

@ -72,7 +72,7 @@ extern void ext2_xattr_delete_inode(struct inode *);
extern struct mb_cache *ext2_xattr_create_cache(void);
extern void ext2_xattr_destroy_cache(struct mb_cache *cache);
extern const struct xattr_handler *ext2_xattr_handlers[];
extern const struct xattr_handler * const ext2_xattr_handlers[];
# else /* CONFIG_EXT2_FS_XATTR */