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[NETFILTER]: xt_connmark: 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 2006-09-20 12:06:25 -07:00 • committed by David S. Miller
parent be7263b7b7
commit f1eda05386
1 changed files with 36 additions and 0 deletions
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36
net/netfilter/xt_connmark.c
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@ -81,6 +81,37 @@ destroy(const struct xt_match *match, void *matchinfo)
#endif #endif
} }
#ifdef CONFIG_COMPAT
struct compat_xt_connmark_info {
compat_ulong_t mark, mask;
u_int8_t invert;
u_int8_t __pad1;
u_int16_t __pad2;
};
static void compat_from_user(void *dst, void *src)
{
struct compat_xt_connmark_info *cm = src;
struct xt_connmark_info m = {
.mark = cm->mark,
.mask = cm->mask,
.invert = cm->invert,
};
memcpy(dst, &m, sizeof(m));
}
static int compat_to_user(void __user *dst, void *src)
{
struct xt_connmark_info *m = src;
struct compat_xt_connmark_info cm = {
.mark = m->mark,
.mask = m->mask,
.invert = m->invert,
};
return copy_to_user(dst, &cm, sizeof(cm)) ? -EFAULT : 0;
}
#endif /* CONFIG_COMPAT */
static struct xt_match xt_connmark_match[] = { static struct xt_match xt_connmark_match[] = {
{ {
.name = "connmark", .name = "connmark",
@ -89,6 +120,11 @@ static struct xt_match xt_connmark_match[] = {
.match = match, .match = match,
.destroy = destroy, .destroy = destroy,
.matchsize = sizeof(struct xt_connmark_info), .matchsize = sizeof(struct xt_connmark_info),
#ifdef CONFIG_COMPAT
.compatsize = sizeof(struct compat_xt_connmark_info),
.compat_from_user = compat_from_user,
.compat_to_user = compat_to_user,
#endif
.me = THIS_MODULE .me = THIS_MODULE
}, },
{ {