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[NETFILTER]: x_tables: per-netns xt_tables

Browse source 
In fact all we want is per-netns set of rules, however doing that will
unnecessary complicate routines such as ipt_hook()/ipt_do_table, so
make full xt_table array per-netns.

Every user stubbed with init_net for a while.

Signed-off-by: Alexey Dobriyan <[email protected]>
Signed-off-by: Patrick McHardy <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Alexey Dobriyan 2008-01-31 04:02:13 -08:00 • committed by David S. Miller
commit 8d87005207
7 changed files with 60 additions and 30 deletions
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12
net/ipv4/netfilter/arp_tables.c
View file

@ -870,7 +870,7 @@ static int get_info(void __user *user, int *len, int compat)
if (compat)
xt_compat_lock(NF_ARP);
#endif
t = try_then_request_module(xt_find_table_lock(NF_ARP, name),
t = try_then_request_module(xt_find_table_lock(&init_net, NF_ARP, name),
"arptable_%s", name);
if (t && !IS_ERR(t)) {
struct arpt_getinfo info;
@ -926,7 +926,7 @@ static int get_entries(struct arpt_get_entries __user *uptr, int *len)
return -EINVAL;
}
t = xt_find_table_lock(NF_ARP, get.name);
t = xt_find_table_lock(&init_net, NF_ARP, get.name);
if (t && !IS_ERR(t)) {
struct xt_table_info *private = t->private;
duprintf("t->private->number = %u\n",
@ -966,7 +966,7 @@ static int __do_replace(const char *name, unsigned int valid_hooks,
goto out;
}
t = try_then_request_module(xt_find_table_lock(NF_ARP, name),
t = try_then_request_module(xt_find_table_lock(&init_net, NF_ARP, name),
"arptable_%s", name);
if (!t || IS_ERR(t)) {
ret = t ? PTR_ERR(t) : -ENOENT;
@ -1132,7 +1132,7 @@ static int do_add_counters(void __user *user, unsigned int len, int compat)
goto free;
}
t = xt_find_table_lock(NF_ARP, name);
t = xt_find_table_lock(&init_net, NF_ARP, name);
if (!t || IS_ERR(t)) {
ret = t ? PTR_ERR(t) : -ENOENT;
goto free;
@ -1604,7 +1604,7 @@ static int compat_get_entries(struct compat_arpt_get_entries __user *uptr,
}
xt_compat_lock(NF_ARP);
t = xt_find_table_lock(NF_ARP, get.name);
t = xt_find_table_lock(&init_net, NF_ARP, get.name);
if (t && !IS_ERR(t)) {
struct xt_table_info *private = t->private;
struct xt_table_info info;
@ -1751,7 +1751,7 @@ int arpt_register_table(struct arpt_table *table,
return ret;
}
new_table = xt_register_table(table, &bootstrap, newinfo);
new_table = xt_register_table(&init_net, table, &bootstrap, newinfo);
if (IS_ERR(new_table)) {
xt_free_table_info(newinfo);
return PTR_ERR(new_table);

12
net/ipv4/netfilter/ip_tables.c
View file

@ -1112,7 +1112,7 @@ static int get_info(void __user *user, int *len, int compat)
if (compat)
xt_compat_lock(AF_INET);
#endif
t = try_then_request_module(xt_find_table_lock(AF_INET, name),
t = try_then_request_module(xt_find_table_lock(&init_net, AF_INET, name),
"iptable_%s", name);
if (t && !IS_ERR(t)) {
struct ipt_getinfo info;
@ -1170,7 +1170,7 @@ get_entries(struct ipt_get_entries __user *uptr, int *len)
return -EINVAL;
}
t = xt_find_table_lock(AF_INET, get.name);
t = xt_find_table_lock(&init_net, AF_INET, get.name);
if (t && !IS_ERR(t)) {
struct xt_table_info *private = t->private;
duprintf("t->private->number = %u\n", private->number);
@ -1208,7 +1208,7 @@ __do_replace(const char *name, unsigned int valid_hooks,
goto out;
}
t = try_then_request_module(xt_find_table_lock(AF_INET, name),
t = try_then_request_module(xt_find_table_lock(&init_net, AF_INET, name),
"iptable_%s", name);
if (!t || IS_ERR(t)) {
ret = t ? PTR_ERR(t) : -ENOENT;
@ -1383,7 +1383,7 @@ do_add_counters(void __user *user, unsigned int len, int compat)
goto free;
}
t = xt_find_table_lock(AF_INET, name);
t = xt_find_table_lock(&init_net, AF_INET, name);
if (!t || IS_ERR(t)) {
ret = t ? PTR_ERR(t) : -ENOENT;
goto free;
@ -1924,7 +1924,7 @@ compat_get_entries(struct compat_ipt_get_entries __user *uptr, int *len)
}
xt_compat_lock(AF_INET);
t = xt_find_table_lock(AF_INET, get.name);
t = xt_find_table_lock(&init_net, AF_INET, get.name);
if (t && !IS_ERR(t)) {
struct xt_table_info *private = t->private;
struct xt_table_info info;
@ -2075,7 +2075,7 @@ int ipt_register_table(struct xt_table *table, const struct ipt_replace *repl)
return ret;
}
new_table = xt_register_table(table, &bootstrap, newinfo);
new_table = xt_register_table(&init_net, table, &bootstrap, newinfo);
if (IS_ERR(new_table)) {
xt_free_table_info(newinfo);
return PTR_ERR(new_table);