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[NETFILTER]: ipt_ULOG: add compat conversion functions

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Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2007-04-12 22:17:05 -07:00 committed by David S. Miller
parent d3a2c3ca8e
commit b076deb849
1 changed files with 40 additions and 0 deletions
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40
net/ipv4/netfilter/ipt_ULOG.c
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@ -349,12 +349,52 @@ static int ipt_ulog_checkentry(const char *tablename,
return 1;
}
#ifdef CONFIG_COMPAT
struct compat_ipt_ulog_info {
compat_uint_t nl_group;
compat_size_t copy_range;
compat_size_t qthreshold;
char prefix[ULOG_PREFIX_LEN];
};
static void compat_from_user(void *dst, void *src)
{
struct compat_ipt_ulog_info *cl = src;
struct ipt_ulog_info l = {
.nl_group = cl->nl_group,
.copy_range = cl->copy_range,
.qthreshold = cl->qthreshold,
};
memcpy(l.prefix, cl->prefix, sizeof(l.prefix));
memcpy(dst, &l, sizeof(l));
}
static int compat_to_user(void __user *dst, void *src)
{
struct ipt_ulog_info *l = src;
struct compat_ipt_ulog_info cl = {
.nl_group = l->nl_group,
.copy_range = l->copy_range,
.qthreshold = l->qthreshold,
};
memcpy(cl.prefix, l->prefix, sizeof(cl.prefix));
return copy_to_user(dst, &cl, sizeof(cl)) ? -EFAULT : 0;
}
#endif /* CONFIG_COMPAT */
static struct xt_target ipt_ulog_reg = {
.name = "ULOG",
.family = AF_INET,
.target = ipt_ulog_target,
.targetsize = sizeof(struct ipt_ulog_info),
.checkentry = ipt_ulog_checkentry,
#ifdef CONFIG_COMPAT
.compatsize = sizeof(struct compat_ipt_ulog_info),
.compat_from_user = compat_from_user,
.compat_to_user = compat_to_user,
#endif
.me = THIS_MODULE,
};