diff options
Diffstat (limited to 'net/sysctl_net.c')
| -rw-r--r-- | net/sysctl_net.c | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/net/sysctl_net.c b/net/sysctl_net.c index 4b45ed631eb8..051ed5f6fc93 100644 --- a/net/sysctl_net.c +++ b/net/sysctl_net.c @@ -101,7 +101,7 @@ __init int net_sysctl_init(void) * registering "/proc/sys/net" as an empty directory not in a * network namespace. */ - net_header = register_sysctl("net", empty); + net_header = register_sysctl_sz("net", empty, 0); if (!net_header) goto out; ret = register_pernet_subsys(&sysctl_pernet_ops); @@ -122,12 +122,13 @@ out1: * allocated. */ static void ensure_safe_net_sysctl(struct net *net, const char *path, - struct ctl_table *table) + struct ctl_table *table, size_t table_size) { struct ctl_table *ent; pr_debug("Registering net sysctl (net %p): %s\n", net, path); - for (ent = table; ent->procname; ent++) { + ent = table; + for (size_t i = 0; i < table_size && ent->procname; ent++, i++) { unsigned long addr; const char *where; @@ -160,15 +161,24 @@ static void ensure_safe_net_sysctl(struct net *net, const char *path, } } -struct ctl_table_header *register_net_sysctl(struct net *net, - const char *path, struct ctl_table *table) +struct ctl_table_header *register_net_sysctl_sz(struct net *net, + const char *path, + struct ctl_table *table, + size_t table_size) { + int count; + struct ctl_table *entry; + if (!net_eq(net, &init_net)) - ensure_safe_net_sysctl(net, path, table); + ensure_safe_net_sysctl(net, path, table, table_size); + + entry = table; + for (count = 0 ; count < table_size && entry->procname; entry++, count++) + ; - return __register_sysctl_table(&net->sysctls, path, table); + return __register_sysctl_table(&net->sysctls, path, table, count); } -EXPORT_SYMBOL_GPL(register_net_sysctl); +EXPORT_SYMBOL_GPL(register_net_sysctl_sz); void unregister_net_sysctl_table(struct ctl_table_header *header) { |