diff options
| author | Patrick McHardy <kaber@trash.net> | 2007-12-17 21:51:33 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-28 14:58:38 -0800 |
| commit | 1fe5723773656a8ee7a981caf7fee9adb0ac6259 (patch) | |
| tree | 18fee4c604f7c68ecb6b070af0dc512591fa47b6 | |
| parent | 311af5cbeab8ce2b9252ce65272e427eeb8093b7 (diff) | |
[NETFILTER]: xt_MARK: add compat support for revision 0
Old userspace doesn't support revision 1, especially for IPv6, which
is only available in the SVN snapshot.
Add compat support for revision 0.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/netfilter/xt_MARK.c | 44 |
1 files changed, 38 insertions, 6 deletions
diff --git a/net/netfilter/xt_MARK.c b/net/netfilter/xt_MARK.c index 5bf912120f4..57c6d55e33d 100644 --- a/net/netfilter/xt_MARK.c +++ b/net/netfilter/xt_MARK.c @@ -94,6 +94,28 @@ mark_tg_check(const char *tablename, const void *entry, } #ifdef CONFIG_COMPAT +struct compat_xt_mark_target_info { + compat_ulong_t mark; +}; + +static void mark_tg_compat_from_user(void *dst, void *src) +{ + const struct compat_xt_mark_target_info *cm = src; + struct xt_mark_target_info m = { + .mark = cm->mark, + }; + memcpy(dst, &m, sizeof(m)); +} + +static int mark_tg_compat_to_user(void __user *dst, void *src) +{ + const struct xt_mark_target_info *m = src; + struct compat_xt_mark_target_info cm = { + .mark = m->mark, + }; + return copy_to_user(dst, &cm, sizeof(cm)) ? -EFAULT : 0; +} + struct compat_xt_mark_target_info_v1 { compat_ulong_t mark; u_int8_t mode; @@ -101,7 +123,7 @@ struct compat_xt_mark_target_info_v1 { u_int16_t __pad2; }; -static void mark_tg_compat_from_user(void *dst, void *src) +static void mark_tg_compat_from_user_v1(void *dst, void *src) { const struct compat_xt_mark_target_info_v1 *cm = src; struct xt_mark_target_info_v1 m = { @@ -111,7 +133,7 @@ static void mark_tg_compat_from_user(void *dst, void *src) memcpy(dst, &m, sizeof(m)); } -static int mark_tg_compat_to_user(void __user *dst, void *src) +static int mark_tg_compat_to_user_v1(void __user *dst, void *src) { const struct xt_mark_target_info_v1 *m = src; struct compat_xt_mark_target_info_v1 cm = { @@ -130,6 +152,11 @@ static struct xt_target mark_tg_reg[] __read_mostly = { .checkentry = mark_tg_check_v0, .target = mark_tg_v0, .targetsize = sizeof(struct xt_mark_target_info), +#ifdef CONFIG_COMPAT + .compatsize = sizeof(struct compat_xt_mark_target_info), + .compat_from_user = mark_tg_compat_from_user, + .compat_to_user = mark_tg_compat_to_user, +#endif .table = "mangle", .me = THIS_MODULE, }, @@ -142,8 +169,8 @@ static struct xt_target mark_tg_reg[] __read_mostly = { .targetsize = sizeof(struct xt_mark_target_info_v1), #ifdef CONFIG_COMPAT .compatsize = sizeof(struct compat_xt_mark_target_info_v1), - .compat_from_user = mark_tg_compat_from_user, - .compat_to_user = mark_tg_compat_to_user, + .compat_from_user = mark_tg_compat_from_user_v1, + .compat_to_user = mark_tg_compat_to_user_v1, #endif .table = "mangle", .me = THIS_MODULE, @@ -155,6 +182,11 @@ static struct xt_target mark_tg_reg[] __read_mostly = { .checkentry = mark_tg_check_v0, .target = mark_tg_v0, .targetsize = sizeof(struct xt_mark_target_info), +#ifdef CONFIG_COMPAT + .compatsize = sizeof(struct compat_xt_mark_target_info), + .compat_from_user = mark_tg_compat_from_user, + .compat_to_user = mark_tg_compat_to_user, +#endif .table = "mangle", .me = THIS_MODULE, }, @@ -167,8 +199,8 @@ static struct xt_target mark_tg_reg[] __read_mostly = { .targetsize = sizeof(struct xt_mark_target_info_v1), #ifdef CONFIG_COMPAT .compatsize = sizeof(struct compat_xt_mark_target_info_v1), - .compat_from_user = mark_tg_compat_from_user, - .compat_to_user = mark_tg_compat_to_user, + .compat_from_user = mark_tg_compat_from_user_v1, + .compat_to_user = mark_tg_compat_to_user_v1, #endif .table = "mangle", .me = THIS_MODULE, |