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netfilter: xtables: make use of xt_request_find_target

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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
This commit is contained in:
Jan Engelhardt 2009-07-10 18:55:11 +02:00
parent ff67e4e42b
commit d2a7b6bad2
6 changed files with 29 additions and 52 deletions
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13
net/bridge/netfilter/ebtables.c
View File

@ -395,13 +395,9 @@ ebt_check_watcher(struct ebt_entry_watcher *w, struct xt_tgchk_param *par,
left - sizeof(struct ebt_entry_watcher) < w->watcher_size)
return -EINVAL;
watcher = try_then_request_module(
xt_find_target(NFPROTO_BRIDGE, w->u.name, 0),
"ebt_%s", w->u.name);
watcher = xt_request_find_target(NFPROTO_BRIDGE, w->u.name, 0);
if (IS_ERR(watcher))
return PTR_ERR(watcher);
if (watcher == NULL)
return -ENOENT;
w->u.watcher = watcher;
par->target = watcher;
@ -714,15 +710,10 @@ ebt_check_entry(struct ebt_entry *e, struct net *net,
t = (struct ebt_entry_target *)(((char *)e) + e->target_offset);
gap = e->next_offset - e->target_offset;
target = try_then_request_module(
xt_find_target(NFPROTO_BRIDGE, t->u.name, 0),
"ebt_%s", t->u.name);
target = xt_request_find_target(NFPROTO_BRIDGE, t->u.name, 0);
if (IS_ERR(target)) {
ret = PTR_ERR(target);
goto cleanup_watchers;
} else if (target == NULL) {
ret = -ENOENT;
goto cleanup_watchers;
}
t->u.target = target;

20
net/ipv4/netfilter/arp_tables.c
View File

@ -523,13 +523,11 @@ find_check_entry(struct arpt_entry *e, const char *name, unsigned int size)
return ret;
t = arpt_get_target(e);
target = try_then_request_module(xt_find_target(NFPROTO_ARP,
t->u.user.name,
t->u.user.revision),
"arpt_%s", t->u.user.name);
if (IS_ERR(target) || !target) {
target = xt_request_find_target(NFPROTO_ARP, t->u.user.name,
t->u.user.revision);
if (IS_ERR(target)) {
duprintf("find_check_entry: `%s' not found\n", t->u.user.name);
ret = target ? PTR_ERR(target) : -ENOENT;
ret = PTR_ERR(target);
goto out;
}
t->u.kernel.target = target;
@ -1252,14 +1250,12 @@ check_compat_entry_size_and_hooks(struct compat_arpt_entry *e,
entry_offset = (void *)e - (void *)base;
t = compat_arpt_get_target(e);
target = try_then_request_module(xt_find_target(NFPROTO_ARP,
t->u.user.name,
t->u.user.revision),
"arpt_%s", t->u.user.name);
if (IS_ERR(target) || !target) {
target = xt_request_find_target(NFPROTO_ARP, t->u.user.name,
t->u.user.revision);
if (IS_ERR(target)) {
duprintf("check_compat_entry_size_and_hooks: `%s' not found\n",
t->u.user.name);
ret = target ? PTR_ERR(target) : -ENOENT;
ret = PTR_ERR(target);
goto out;
}
t->u.kernel.target = target;

20
net/ipv4/netfilter/ip_tables.c
View File

@ -701,13 +701,11 @@ find_check_entry(struct ipt_entry *e, struct net *net, const char *name,
}
t = ipt_get_target(e);
target = try_then_request_module(xt_find_target(AF_INET,
t->u.user.name,
t->u.user.revision),
"ipt_%s", t->u.user.name);
if (IS_ERR(target) || !target) {
target = xt_request_find_target(NFPROTO_IPV4, t->u.user.name,
t->u.user.revision);
if (IS_ERR(target)) {
duprintf("find_check_entry: `%s' not found\n", t->u.user.name);
ret = target ? PTR_ERR(target) : -ENOENT;
ret = PTR_ERR(target);
goto cleanup_matches;
}
t->u.kernel.target = target;
@ -1547,14 +1545,12 @@ check_compat_entry_size_and_hooks(struct compat_ipt_entry *e,
}
t = compat_ipt_get_target(e);
target = try_then_request_module(xt_find_target(AF_INET,
t->u.user.name,
t->u.user.revision),
"ipt_%s", t->u.user.name);
if (IS_ERR(target) || !target) {
target = xt_request_find_target(NFPROTO_IPV4, t->u.user.name,
t->u.user.revision);
if (IS_ERR(target)) {
duprintf("check_compat_entry_size_and_hooks: `%s' not found\n",
t->u.user.name);
ret = target ? PTR_ERR(target) : -ENOENT;
ret = PTR_ERR(target);
goto release_matches;
}
t->u.kernel.target = target;

20
net/ipv6/netfilter/ip6_tables.c
View File

@ -733,13 +733,11 @@ find_check_entry(struct ip6t_entry *e, struct net *net, const char *name,
}
t = ip6t_get_target(e);
target = try_then_request_module(xt_find_target(AF_INET6,
t->u.user.name,
t->u.user.revision),
"ip6t_%s", t->u.user.name);
if (IS_ERR(target) || !target) {
target = xt_request_find_target(NFPROTO_IPV6, t->u.user.name,
t->u.user.revision);
if (IS_ERR(target)) {
duprintf("find_check_entry: `%s' not found\n", t->u.user.name);
ret = target ? PTR_ERR(target) : -ENOENT;
ret = PTR_ERR(target);
goto cleanup_matches;
}
t->u.kernel.target = target;
@ -1581,14 +1579,12 @@ check_compat_entry_size_and_hooks(struct compat_ip6t_entry *e,
}
t = compat_ip6t_get_target(e);
target = try_then_request_module(xt_find_target(AF_INET6,
t->u.user.name,
t->u.user.revision),
"ip6t_%s", t->u.user.name);
if (IS_ERR(target) || !target) {
target = xt_request_find_target(NFPROTO_IPV6, t->u.user.name,
t->u.user.revision);
if (IS_ERR(target)) {
duprintf("check_compat_entry_size_and_hooks: `%s' not found\n",
t->u.user.name);
ret = target ? PTR_ERR(target) : -ENOENT;
ret = PTR_ERR(target);
goto release_matches;
}
t->u.kernel.target = target;

4
net/netfilter/x_tables.c
View File

@ -250,9 +250,7 @@ struct xt_target *xt_request_find_target(u8 af, const char *name, u8 revision)
target = try_then_request_module(xt_find_target(af, name, revision),
"%st_%s", xt_prefix[af], name);
if (IS_ERR(target) || !target)
return NULL;
return target;
return (target != NULL) ? target : ERR_PTR(-ENOENT);
}
EXPORT_SYMBOL_GPL(xt_request_find_target);

4
net/sched/act_ipt.c
View File

@ -46,8 +46,8 @@ static int ipt_init_target(struct ipt_entry_target *t, char *table, unsigned int
target = xt_request_find_target(AF_INET, t->u.user.name,
t->u.user.revision);
if (!target)
return -ENOENT;
if (IS_ERR(target))
return PTR_ERR(target);
t->u.kernel.target = target;
par.table = table;