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netfilter: ebtables: mark: add CONFIG_COMPAT support

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Add the required handlers to convert 32 bit
ebtables mark match and match target structs to 64bit layout.

Signed-off-by: Florian Westphal <fwestphal@astaro.com>
This commit is contained in:
Florian Westphal 2010-01-27 14:39:05 +01:00
parent 314ddca3b1
commit 6e705f56a1
2 changed files with 68 additions and 0 deletions
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31
net/bridge/netfilter/ebt_mark.c
View File

@ -52,6 +52,32 @@ static bool ebt_mark_tg_check(const struct xt_tgchk_param *par)
return false;
return true;
}
#ifdef CONFIG_COMPAT
struct compat_ebt_mark_t_info {
compat_ulong_t mark;
compat_uint_t target;
};
static void mark_tg_compat_from_user(void *dst, const void *src)
{
const struct compat_ebt_mark_t_info *user = src;
struct ebt_mark_t_info *kern = dst;
kern->mark = user->mark;
kern->target = user->target;
}
static int mark_tg_compat_to_user(void __user *dst, const void *src)
{
struct compat_ebt_mark_t_info __user *user = dst;
const struct ebt_mark_t_info *kern = src;
if (put_user(kern->mark, &user->mark) ||
put_user(kern->target, &user->target))
return -EFAULT;
return 0;
}
#endif
static struct xt_target ebt_mark_tg_reg __read_mostly = {
.name = "mark",
@ -60,6 +86,11 @@ static struct xt_target ebt_mark_tg_reg __read_mostly = {
.target = ebt_mark_tg,
.checkentry = ebt_mark_tg_check,
.targetsize = sizeof(struct ebt_mark_t_info),
#ifdef CONFIG_COMPAT
.compatsize = sizeof(struct compat_ebt_mark_t_info),
.compat_from_user = mark_tg_compat_from_user,
.compat_to_user = mark_tg_compat_to_user,
#endif
.me = THIS_MODULE,
};

37
net/bridge/netfilter/ebt_mark_m.c
View File

@ -35,6 +35,38 @@ static bool ebt_mark_mt_check(const struct xt_mtchk_param *par)
return true;
}
#ifdef CONFIG_COMPAT
struct compat_ebt_mark_m_info {
compat_ulong_t mark, mask;
uint8_t invert, bitmask;
};
static void mark_mt_compat_from_user(void *dst, const void *src)
{
const struct compat_ebt_mark_m_info *user = src;
struct ebt_mark_m_info *kern = dst;
kern->mark = user->mark;
kern->mask = user->mask;
kern->invert = user->invert;
kern->bitmask = user->bitmask;
}
static int mark_mt_compat_to_user(void __user *dst, const void *src)
{
struct compat_ebt_mark_m_info __user *user = dst;
const struct ebt_mark_m_info *kern = src;
if (put_user(kern->mark, &user->mark) ||
put_user(kern->mask, &user->mask) ||
put_user(kern->invert, &user->invert) ||
put_user(kern->bitmask, &user->bitmask))
return -EFAULT;
return 0;
}
#endif
static struct xt_match ebt_mark_mt_reg __read_mostly = {
.name = "mark_m",
.revision = 0,
@ -42,6 +74,11 @@ static struct xt_match ebt_mark_mt_reg __read_mostly = {
.match = ebt_mark_mt,
.checkentry = ebt_mark_mt_check,
.matchsize = sizeof(struct ebt_mark_m_info),
#ifdef CONFIG_COMPAT
.compatsize = sizeof(struct compat_ebt_mark_m_info),
.compat_from_user = mark_mt_compat_from_user,
.compat_to_user = mark_mt_compat_to_user,
#endif
.me = THIS_MODULE,
};