Thread (55 messages) 55 messages, 5 authors, 2018-01-17

Re: [PATCH 04/36] usercopy: Prepare for usercopy whitelisting

From: Christopher Lameter <hidden>
Date: 2018-01-10 18:28:23
Also in: linux-fsdevel, linux-mm, linux-xfs, lkml, netdev

On Tue, 9 Jan 2018, Kees Cook wrote:
+struct kmem_cache *kmem_cache_create_usercopy(const char *name,
+			size_t size, size_t align, slab_flags_t flags,
+			size_t useroffset, size_t usersize,
+			void (*ctor)(void *));
Hmmm... At some point we should switch kmem_cache_create to pass a struct
containing all the parameters. Otherwise the API will blow up with
additional functions.
quoted hunk ↗ jump to hunk
index 2181719fd907..70c4b4bb4d1f 100644
--- a/include/linux/stddef.h
+++ b/include/linux/stddef.h
@@ -19,6 +19,8 @@ enum {
 #define offsetof(TYPE, MEMBER)	((size_t)&((TYPE *)0)->MEMBER)
 #endif

+#define sizeof_field(structure, field) sizeof((((structure *)0)->field))
+
 /**
  * offsetofend(TYPE, MEMBER)
  *
Have a separate patch for adding this functionality? Its not a slab
maintainer
file.

Rest looks ok.

Acked-by: Christoph Lameter <redacted>
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