forked from luck/tmp_suning_uos_patched
[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>
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@ -417,7 +417,7 @@ ebt_check_entry_size_and_hooks(struct ebt_entry *e,
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/* beginning of a new chain
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if i == NF_BR_NUMHOOKS it must be a user defined chain */
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if (i != NF_BR_NUMHOOKS || !(e->bitmask & EBT_ENTRY_OR_ENTRIES)) {
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if ((e->bitmask & EBT_ENTRY_OR_ENTRIES) != 0) {
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if (e->bitmask != 0) {
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/* we make userspace set this right,
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so there is no misunderstanding */
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BUGPRINT("EBT_ENTRY_OR_ENTRIES shouldn't be set "
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@ -500,7 +500,7 @@ ebt_get_udc_positions(struct ebt_entry *e, struct ebt_table_info *newinfo,
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int i;
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/* we're only interested in chain starts */
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if (e->bitmask & EBT_ENTRY_OR_ENTRIES)
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if (e->bitmask)
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return 0;
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for (i = 0; i < NF_BR_NUMHOOKS; i++) {
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if ((valid_hooks & (1 << i)) == 0)
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@ -550,7 +550,7 @@ ebt_cleanup_entry(struct ebt_entry *e, unsigned int *cnt)
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{
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struct ebt_entry_target *t;
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if ((e->bitmask & EBT_ENTRY_OR_ENTRIES) == 0)
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if (e->bitmask == 0)
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return 0;
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/* we're done */
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if (cnt && (*cnt)-- == 0)
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@ -576,7 +576,7 @@ ebt_check_entry(struct ebt_entry *e, struct ebt_table_info *newinfo,
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int ret;
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/* don't mess with the struct ebt_entries */
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if ((e->bitmask & EBT_ENTRY_OR_ENTRIES) == 0)
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if (e->bitmask == 0)
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return 0;
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if (e->bitmask & ~EBT_F_MASK) {
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@ -1309,7 +1309,7 @@ static inline int ebt_make_names(struct ebt_entry *e, char *base, char *ubase)
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char *hlp;
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struct ebt_entry_target *t;
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if ((e->bitmask & EBT_ENTRY_OR_ENTRIES) == 0)
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if (e->bitmask == 0)
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return 0;
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hlp = ubase - base + (char *)e + e->target_offset;
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