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Subject[patch 03/24] EBTABLES: Verify that ebt_entries have zero ->distinguisher.
2.6.18-stable review patch.  If anyone has any objections, please let us know.
------------------
From: Al Viro <viro@zeniv.linux.org.uk>

We need that for iterator to work; existing check had been too weak.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
---
net/bridge/netfilter/ebtables.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
--- linux-2.6.18.5.orig/net/bridge/netfilter/ebtables.c
+++ linux-2.6.18.5/net/bridge/netfilter/ebtables.c
@@ -439,7 +439,7 @@ ebt_check_entry_size_and_hooks(struct eb
/* beginning of a new chain
if i == NF_BR_NUMHOOKS it must be a user defined chain */
if (i != NF_BR_NUMHOOKS || !(e->bitmask & EBT_ENTRY_OR_ENTRIES)) {
- if ((e->bitmask & EBT_ENTRY_OR_ENTRIES) != 0) {
+ if (e->bitmask != 0) {
/* we make userspace set this right,
so there is no misunderstanding */
BUGPRINT("EBT_ENTRY_OR_ENTRIES shouldn't be set "
@@ -522,7 +522,7 @@ ebt_get_udc_positions(struct ebt_entry *
int i;

/* we're only interested in chain starts */
- if (e->bitmask & EBT_ENTRY_OR_ENTRIES)
+ if (e->bitmask)
return 0;
for (i = 0; i < NF_BR_NUMHOOKS; i++) {
if ((valid_hooks & (1 << i)) == 0)
@@ -572,7 +572,7 @@ ebt_cleanup_entry(struct ebt_entry *e, u
{
struct ebt_entry_target *t;

- if ((e->bitmask & EBT_ENTRY_OR_ENTRIES) == 0)
+ if (e->bitmask == 0)
return 0;
/* we're done */
if (cnt && (*cnt)-- == 0)
@@ -598,7 +598,7 @@ ebt_check_entry(struct ebt_entry *e, str
int ret;

/* don't mess with the struct ebt_entries */
- if ((e->bitmask & EBT_ENTRY_OR_ENTRIES) == 0)
+ if (e->bitmask == 0)
return 0;

if (e->bitmask & ~EBT_F_MASK) {
@@ -1316,7 +1316,7 @@ static inline int ebt_make_names(struct
char *hlp;
struct ebt_entry_target *t;

- if ((e->bitmask & EBT_ENTRY_OR_ENTRIES) == 0)
+ if (e->bitmask == 0)
return 0;

hlp = ubase - base + (char *)e + e->target_offset;
--
-
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