new helper: security_sb_eat_lsm_opts()

combination of alloc_secdata(), security_sb_copy_data(),
security_sb_parse_opt_str() and free_secdata().

Reviewed-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 1 insertions, 12 deletions

diff --git a/fs/super.c b/fs/super.c
index 8d9c9199832d..d571527cb8b8 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -1252,18 +1252,7 @@ mount_fs(struct file_system_type *type, int flags, const char *name, void *data)
         security_init_mnt_opts(&opts);
 
         if (data && !(type->fs_flags & FS_BINARY_MOUNTDATA)) {
-                char *secdata = alloc_secdata();
-                if (!secdata)
-                        return ERR_PTR(-ENOMEM);
-
-                error = security_sb_copy_data(data, secdata);
-                if (error) {
-                        free_secdata(secdata);
-                        return ERR_PTR(error);
-                }
-
-                error = security_sb_parse_opts_str(secdata, &opts);
-                free_secdata(secdata);
+                error = security_sb_eat_lsm_opts(data, &opts);
                 if (error)
                         return ERR_PTR(error);
         }