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From: Anthony G. Basile <blueness@gentoo.org>
For users that emerge without XATTR_PAX support enabled, we still want user.pax.flags
namespace supported on tmpfs so that the PaX markings survive emerge.
diff -Naur a/mm/shmem.c b/mm/shmem.c
--- a/mm/shmem.c 2013-06-11 21:00:18.000000000 -0400
+++ b/mm/shmem.c 2013-06-11 21:08:18.000000000 -0400
@@ -1809,11 +1809,7 @@
static int shmem_xattr_validate(const char *name)
{
struct { const char *prefix; size_t len; } arr[] = {
-
-#ifdef CONFIG_PAX_XATTR_PAX_FLAGS
{ XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN},
-#endif
-
{ XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN },
{ XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN }
};
@@ -1867,14 +1863,12 @@
if (err)
return err;
-#ifdef CONFIG_PAX_XATTR_PAX_FLAGS
if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) {
if (strcmp(name, XATTR_NAME_PAX_FLAGS))
return -EOPNOTSUPP;
if (size > 8)
return -EINVAL;
}
-#endif
if (size == 0)
value = ""; /* empty EA, do not remove */
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