diff options
author | Florian Westphal <fw@strlen.de> | 2018-02-27 19:42:34 +0100 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2018-03-05 23:15:43 +0100 |
commit | 9782a11efc072faaf91d4aa60e9d23553f918029 (patch) | |
tree | 32b2e32ad936a1e9df6e1b6ea811ee754b27901f /net | |
parent | c84ca954ac9fa67a6ce27f91f01e4451c74fd8f6 (diff) | |
download | op-kernel-dev-9782a11efc072faaf91d4aa60e9d23553f918029.zip op-kernel-dev-9782a11efc072faaf91d4aa60e9d23553f918029.tar.gz |
netfilter: compat: prepare xt_compat_init_offsets to return errors
should have no impact, function still always returns 0.
This patch is only to ease review.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net')
-rw-r--r-- | net/bridge/netfilter/ebtables.c | 10 | ||||
-rw-r--r-- | net/ipv4/netfilter/arp_tables.c | 10 | ||||
-rw-r--r-- | net/ipv4/netfilter/ip_tables.c | 8 | ||||
-rw-r--r-- | net/ipv6/netfilter/ip6_tables.c | 10 | ||||
-rw-r--r-- | net/netfilter/x_tables.c | 4 |
5 files changed, 31 insertions, 11 deletions
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c index 02c4b40..217aa79 100644 --- a/net/bridge/netfilter/ebtables.c +++ b/net/bridge/netfilter/ebtables.c @@ -1819,10 +1819,14 @@ static int compat_table_info(const struct ebt_table_info *info, { unsigned int size = info->entries_size; const void *entries = info->entries; + int ret; newinfo->entries_size = size; - xt_compat_init_offsets(NFPROTO_BRIDGE, info->nentries); + ret = xt_compat_init_offsets(NFPROTO_BRIDGE, info->nentries); + if (ret) + return ret; + return EBT_ENTRY_ITERATE(entries, size, compat_calc_entry, info, entries, newinfo); } @@ -2245,7 +2249,9 @@ static int compat_do_replace(struct net *net, void __user *user, xt_compat_lock(NFPROTO_BRIDGE); - xt_compat_init_offsets(NFPROTO_BRIDGE, tmp.nentries); + ret = xt_compat_init_offsets(NFPROTO_BRIDGE, tmp.nentries); + if (ret < 0) + goto out_unlock; ret = compat_copy_entries(entries_tmp, tmp.entries_size, &state); if (ret < 0) goto out_unlock; diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c index 82ba09b..aaafdbd 100644 --- a/net/ipv4/netfilter/arp_tables.c +++ b/net/ipv4/netfilter/arp_tables.c @@ -769,7 +769,9 @@ static int compat_table_info(const struct xt_table_info *info, memcpy(newinfo, info, offsetof(struct xt_table_info, entries)); newinfo->initial_entries = 0; loc_cpu_entry = info->entries; - xt_compat_init_offsets(NFPROTO_ARP, info->number); + ret = xt_compat_init_offsets(NFPROTO_ARP, info->number); + if (ret) + return ret; xt_entry_foreach(iter, loc_cpu_entry, info->size) { ret = compat_calc_entry(iter, info, loc_cpu_entry, newinfo); if (ret != 0) @@ -1156,7 +1158,7 @@ static int translate_compat_table(struct xt_table_info **pinfo, struct compat_arpt_entry *iter0; struct arpt_replace repl; unsigned int size; - int ret = 0; + int ret; info = *pinfo; entry0 = *pentry0; @@ -1165,7 +1167,9 @@ static int translate_compat_table(struct xt_table_info **pinfo, j = 0; xt_compat_lock(NFPROTO_ARP); - xt_compat_init_offsets(NFPROTO_ARP, compatr->num_entries); + ret = xt_compat_init_offsets(NFPROTO_ARP, compatr->num_entries); + if (ret) + goto out_unlock; /* Walk through entries, checking offsets. */ xt_entry_foreach(iter0, entry0, compatr->size) { ret = check_compat_entry_size_and_hooks(iter0, info, &size, diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c index 4901ca6..f906351 100644 --- a/net/ipv4/netfilter/ip_tables.c +++ b/net/ipv4/netfilter/ip_tables.c @@ -933,7 +933,9 @@ static int compat_table_info(const struct xt_table_info *info, memcpy(newinfo, info, offsetof(struct xt_table_info, entries)); newinfo->initial_entries = 0; loc_cpu_entry = info->entries; - xt_compat_init_offsets(AF_INET, info->number); + ret = xt_compat_init_offsets(AF_INET, info->number); + if (ret) + return ret; xt_entry_foreach(iter, loc_cpu_entry, info->size) { ret = compat_calc_entry(iter, info, loc_cpu_entry, newinfo); if (ret != 0) @@ -1407,7 +1409,9 @@ translate_compat_table(struct net *net, j = 0; xt_compat_lock(AF_INET); - xt_compat_init_offsets(AF_INET, compatr->num_entries); + ret = xt_compat_init_offsets(AF_INET, compatr->num_entries); + if (ret) + goto out_unlock; /* Walk through entries, checking offsets. */ xt_entry_foreach(iter0, entry0, compatr->size) { ret = check_compat_entry_size_and_hooks(iter0, info, &size, diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c index e84cec4..3c36a4c 100644 --- a/net/ipv6/netfilter/ip6_tables.c +++ b/net/ipv6/netfilter/ip6_tables.c @@ -950,7 +950,9 @@ static int compat_table_info(const struct xt_table_info *info, memcpy(newinfo, info, offsetof(struct xt_table_info, entries)); newinfo->initial_entries = 0; loc_cpu_entry = info->entries; - xt_compat_init_offsets(AF_INET6, info->number); + ret = xt_compat_init_offsets(AF_INET6, info->number); + if (ret) + return ret; xt_entry_foreach(iter, loc_cpu_entry, info->size) { ret = compat_calc_entry(iter, info, loc_cpu_entry, newinfo); if (ret != 0) @@ -1414,7 +1416,7 @@ translate_compat_table(struct net *net, struct compat_ip6t_entry *iter0; struct ip6t_replace repl; unsigned int size; - int ret = 0; + int ret; info = *pinfo; entry0 = *pentry0; @@ -1423,7 +1425,9 @@ translate_compat_table(struct net *net, j = 0; xt_compat_lock(AF_INET6); - xt_compat_init_offsets(AF_INET6, compatr->num_entries); + ret = xt_compat_init_offsets(AF_INET6, compatr->num_entries); + if (ret) + goto out_unlock; /* Walk through entries, checking offsets. */ xt_entry_foreach(iter0, entry0, compatr->size) { ret = check_compat_entry_size_and_hooks(iter0, info, &size, diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c index 82b1f8f..e878c85 100644 --- a/net/netfilter/x_tables.c +++ b/net/netfilter/x_tables.c @@ -632,10 +632,12 @@ int xt_compat_calc_jump(u_int8_t af, unsigned int offset) } EXPORT_SYMBOL_GPL(xt_compat_calc_jump); -void xt_compat_init_offsets(u_int8_t af, unsigned int number) +int xt_compat_init_offsets(u8 af, unsigned int number) { xt[af].number = number; xt[af].cur = 0; + + return 0; } EXPORT_SYMBOL(xt_compat_init_offsets); |