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| author |   Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> | 2018-05-31 18:45:21 +0200 |
|---|---|---|
| committer | Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> | 2018-06-06 14:00:48 +0200 |
| commit | bd975e691486ba52790ba23cc9b4fecab7bc0d31 (patch) | |
| tree | 6beb30d1d7c50b358febb0bdfb2d2643eaba4d2b /include/linux/netfilter | |
| parent | netfilter: xt_set: Check hook mask correctly (diff) | |
| download | linux-dev-bd975e691486ba52790ba23cc9b4fecab7bc0d31.tar.xz linux-dev-bd975e691486ba52790ba23cc9b4fecab7bc0d31.zip | |
netfilter: ipset: List timing out entries with "timeout 1" instead of zero
When listing sets with timeout support, there's a probability that
just timing out entries with "0" timeout value is listed/saved.
However when restoring the saved list, the zero timeout value means
permanent elelements.
The new behaviour is that timing out entries are listed with "timeout 1"
instead of zero.
Fixes netfilter bugzilla #1258.
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Diffstat (limited to 'include/linux/netfilter')
| -rw-r--r-- | include/linux/netfilter/ipset/ip_set_timeout.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/include/linux/netfilter/ipset/ip_set_timeout.h b/include/linux/netfilter/ipset/ip_set_timeout.h index bfb3531fd88a..7ad8ddf9ca8a 100644 --- a/include/linux/netfilter/ipset/ip_set_timeout.h +++ b/include/linux/netfilter/ipset/ip_set_timeout.h @@ -65,8 +65,14 @@ ip_set_timeout_set(unsigned long *timeout, u32 value) static inline u32 ip_set_timeout_get(const unsigned long *timeout) { - return *timeout == IPSET_ELEM_PERMANENT ? 0 : - jiffies_to_msecs(*timeout - jiffies)/MSEC_PER_SEC; + u32 t; + + if (*timeout == IPSET_ELEM_PERMANENT) + return 0; + + t = jiffies_to_msecs(*timeout - jiffies)/MSEC_PER_SEC; + /* Zero value in userspace means no timeout */ + return t == 0 ? 1 : t; } #endif /* __KERNEL__ */ |