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[EBTABLES]: Verify that ebt_entries have zero ->distinguisher. 

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>
This commit is contained in:
Al Viro 2006-11-30 19:24:12 -08:00 committed by David S. Miller
parent bb2ef25c2c
commit 40642f95f5
1 changed files with 5 additions and 5 deletions
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10
net/bridge/netfilter/ebtables.c
View File

@ -417,7 +417,7 @@ ebt_check_entry_size_and_hooks(struct ebt_entry *e,
/* 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 "
@ -500,7 +500,7 @@ ebt_get_udc_positions(struct ebt_entry *e, struct ebt_table_info *newinfo,
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)
@ -550,7 +550,7 @@ ebt_cleanup_entry(struct ebt_entry *e, unsigned int *cnt)
{
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)
@ -576,7 +576,7 @@ ebt_check_entry(struct ebt_entry *e, struct ebt_table_info *newinfo,
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) {
@ -1309,7 +1309,7 @@ static inline int ebt_make_names(struct ebt_entry *e, char *base, char *ubase)
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;