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[NETFILTER]: xt_mark: 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 12:05:54 -07:00 committed by David S. Miller
parent 9fa492cdc1
commit bc80b65665
1 changed files with 36 additions and 0 deletions
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36
net/netfilter/xt_mark.c
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@ -50,6 +50,37 @@ checkentry(const char *tablename,
return 1;
}
#ifdef CONFIG_COMPAT
struct compat_xt_mark_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_mark_info *cm = src;
struct xt_mark_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_mark_info *m = src;
struct compat_xt_mark_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_mark_match[] = {
{
.name = "mark",
@ -57,6 +88,11 @@ static struct xt_match xt_mark_match[] = {
.checkentry = checkentry,
.match = match,
.matchsize = sizeof(struct xt_mark_info),
#ifdef CONFIG_COMPAT
.compatsize = sizeof(struct compat_xt_mark_info),
.compat_from_user = compat_from_user,
.compat_to_user = compat_to_user,
#endif
.me = THIS_MODULE,
},
{