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netfilter: remove the compat argument to xt_copy_counters_from_user 

Lift the in_compat_syscall() from the callers instead.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christoph Hellwig 2020-07-17 08:23:21 +02:00 committed by David S. Miller
parent 77d4df41d5
commit c34bc10d25
5 changed files with 8 additions and 12 deletions
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2
include/linux/netfilter/x_tables.h
View File

@ -302,7 +302,7 @@ int xt_data_to_user(void __user *dst, const void *src,
int usersize, int size, int aligned_size);
void *xt_copy_counters_from_user(const void __user *user, unsigned int len,
struct xt_counters_info *info, bool compat);
struct xt_counters_info *info);
struct xt_counters *xt_counters_alloc(unsigned int counters);
struct xt_table *xt_register_table(struct net *net,

3
net/ipv4/netfilter/arp_tables.c
View File

@ -1008,8 +1008,7 @@ static int do_add_counters(struct net *net, const void __user *user,
struct arpt_entry *iter;
unsigned int addend;
paddc = xt_copy_counters_from_user(user, len, &tmp,
in_compat_syscall());
paddc = xt_copy_counters_from_user(user, len, &tmp);
if (IS_ERR(paddc))
return PTR_ERR(paddc);

3
net/ipv4/netfilter/ip_tables.c
View File

@ -1163,8 +1163,7 @@ do_add_counters(struct net *net, const void __user *user,
struct ipt_entry *iter;
unsigned int addend;
paddc = xt_copy_counters_from_user(user, len, &tmp,
in_compat_syscall());
paddc = xt_copy_counters_from_user(user, len, &tmp);
if (IS_ERR(paddc))
return PTR_ERR(paddc);

3
net/ipv6/netfilter/ip6_tables.c
View File

@ -1179,8 +1179,7 @@ do_add_counters(struct net *net, const void __user *user, unsigned int len)
struct ip6t_entry *iter;
unsigned int addend;
paddc = xt_copy_counters_from_user(user, len, &tmp,
in_compat_syscall());
paddc = xt_copy_counters_from_user(user, len, &tmp);
if (IS_ERR(paddc))
return PTR_ERR(paddc);
t = xt_find_table_lock(net, AF_INET6, tmp.name);

9
net/netfilter/x_tables.c
View File

@ -1033,15 +1033,14 @@ EXPORT_SYMBOL_GPL(xt_check_target);
* @user: src pointer to userspace memory
* @len: alleged size of userspace memory
* @info: where to store the xt_counters_info metadata
* @compat: true if we setsockopt call is done by 32bit task on 64bit kernel
*
* Copies counter meta data from @user and stores it in @info.
*
* vmallocs memory to hold the counters, then copies the counter data
* from @user to the new memory and returns a pointer to it.
*
* If @compat is true, @info gets converted automatically to the 64bit
* representation.
* If called from a compat syscall, @info gets converted automatically to the
* 64bit representation.
*
* The metadata associated with the counters is stored in @info.
*
@ -1049,13 +1048,13 @@ EXPORT_SYMBOL_GPL(xt_check_target);
* If IS_ERR is false, caller has to vfree the pointer.
*/
void *xt_copy_counters_from_user(const void __user *user, unsigned int len,
struct xt_counters_info *info, bool compat)
struct xt_counters_info *info)
{
void *mem;
u64 size;
#ifdef CONFIG_COMPAT
if (compat) {
if (in_compat_syscall()) {
/* structures only differ in size due to alignment */
struct compat_xt_counters_info compat_tmp;