[NETFILTER]: x_tables: change xt_table_register() return value convention

Switch from 0/-E to ptr/PTR_ERR convention.

Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h
index 90dc6ea..937cebb 100644 (file)
--- a/include/linux/netfilter/x_tables.h
+++ b/include/linux/netfilter/x_tables.h
@@ -335,9 +335,9 @@ extern int xt_check_target(const struct xt_target *target, unsigned short family
                           unsigned int size, const char *table, unsigned int hook,
                           unsigned short proto, int inv_proto);
 
-extern int xt_register_table(struct xt_table *table,
-                            struct xt_table_info *bootstrap,
-                            struct xt_table_info *newinfo);
+extern struct xt_table *xt_register_table(struct xt_table *table,
+                                         struct xt_table_info *bootstrap,
+                                         struct xt_table_info *newinfo);
 extern void *xt_unregister_table(struct xt_table *table);
 
 extern struct xt_table_info *xt_replace_table(struct xt_table *table,

diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index b4a810c..060de95 100644 (file)
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -1727,6 +1727,7 @@ int arpt_register_table(struct arpt_table *table,
        struct xt_table_info bootstrap
                = { 0, 0, 0, { 0 }, { 0 }, { } };
        void *loc_cpu_entry;
+       struct xt_table *new_table;
 
        newinfo = xt_alloc_table_info(repl->size);
        if (!newinfo) {
@@ -1750,10 +1751,10 @@ int arpt_register_table(struct arpt_table *table,
                return ret;
        }
 
-       ret = xt_register_table(table, &bootstrap, newinfo);
-       if (ret != 0) {
+       new_table = xt_register_table(table, &bootstrap, newinfo);
+       if (IS_ERR(new_table)) {
                xt_free_table_info(newinfo);
-               return ret;
+               return PTR_ERR(new_table);
        }
 
        return 0;

diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index 628a6b5..1b7c09e 100644 (file)
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -2055,6 +2055,7 @@ int ipt_register_table(struct xt_table *table, const struct ipt_replace *repl)
        struct xt_table_info bootstrap
                = { 0, 0, 0, { 0 }, { 0 }, { } };
        void *loc_cpu_entry;
+       struct xt_table *new_table;
 
        newinfo = xt_alloc_table_info(repl->size);
        if (!newinfo)
@@ -2074,10 +2075,10 @@ int ipt_register_table(struct xt_table *table, const struct ipt_replace *repl)
                return ret;
        }
 
-       ret = xt_register_table(table, &bootstrap, newinfo);
-       if (ret != 0) {
+       new_table = xt_register_table(table, &bootstrap, newinfo);
+       if (IS_ERR(new_table)) {
                xt_free_table_info(newinfo);
-               return ret;
+               return PTR_ERR(new_table);
        }
 
        return 0;

diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index 92b4898..f7a6239 100644 (file)
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -2081,6 +2081,7 @@ int ip6t_register_table(struct xt_table *table, const struct ip6t_replace *repl)
        struct xt_table_info bootstrap
                = { 0, 0, 0, { 0 }, { 0 }, { } };
        void *loc_cpu_entry;
+       struct xt_table *new_table;
 
        newinfo = xt_alloc_table_info(repl->size);
        if (!newinfo)
@@ -2100,10 +2101,10 @@ int ip6t_register_table(struct xt_table *table, const struct ip6t_replace *repl)
                return ret;
        }
 
-       ret = xt_register_table(table, &bootstrap, newinfo);
-       if (ret != 0) {
+       new_table = xt_register_table(table, &bootstrap, newinfo);
+       if (IS_ERR(new_table)) {
                xt_free_table_info(newinfo);
-               return ret;
+               return PTR_ERR(new_table);
        }
 
        return 0;

diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
index 8d4fca9..d8d8637 100644 (file)
--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c
@@ -660,9 +660,9 @@ xt_replace_table(struct xt_table *table,
 }
 EXPORT_SYMBOL_GPL(xt_replace_table);
 
-int xt_register_table(struct xt_table *table,
-                     struct xt_table_info *bootstrap,
-                     struct xt_table_info *newinfo)
+struct xt_table *xt_register_table(struct xt_table *table,
+                                  struct xt_table_info *bootstrap,
+                                  struct xt_table_info *newinfo)
 {
        int ret;
        struct xt_table_info *private;
@@ -670,7 +670,7 @@ int xt_register_table(struct xt_table *table,
 
        ret = mutex_lock_interruptible(&xt[table->af].mutex);
        if (ret != 0)
-               return ret;
+               goto out;
 
        /* Don't autoload: we'd eat our tail... */
        list_for_each_entry(t, &xt[table->af].tables, list) {
@@ -693,11 +693,13 @@ int xt_register_table(struct xt_table *table,
        private->initial_entries = private->number;
 
        list_add(&table->list, &xt[table->af].tables);
+       mutex_unlock(&xt[table->af].mutex);
+       return table;
 
-       ret = 0;
  unlock:
        mutex_unlock(&xt[table->af].mutex);
-       return ret;
+out:
+       return ERR_PTR(ret);
 }
 EXPORT_SYMBOL_GPL(xt_register_table);