static void wildstring_mt_destroy(const struct xt_mtdtor_param *par)
{
struct xt_wildstring_info *conf = WILDSTRING_TEXT_PRIV(par->matchinfo);
if (conf->pattern_part1)
textsearch_destroy(conf->config_part1);
if (conf->pattern_part2)
textsearch_destroy(conf->config_part2);
if (conf->pattern_part3)
textsearch_destroy(conf->config_part3);
}
static int em_text_change(struct tcf_proto *tp, void *data, int len,
struct tcf_ematch *m)
{
struct text_match *tm;
struct tcf_em_text *conf = data;
struct ts_config *ts_conf;
int flags = 0;
if (len < sizeof(*conf) || len < (sizeof(*conf) + conf->pattern_len))
return -EINVAL;
if (conf->from_layer > conf->to_layer)
return -EINVAL;
if (conf->from_layer == conf->to_layer &&
conf->from_offset > conf->to_offset)
return -EINVAL;
retry:
ts_conf = textsearch_prepare(conf->algo, (u8 *) conf + sizeof(*conf),
conf->pattern_len, GFP_KERNEL, flags);
if (flags & TS_AUTOLOAD)
rtnl_lock();
if (IS_ERR(ts_conf)) {
if (PTR_ERR(ts_conf) == -ENOENT && !(flags & TS_AUTOLOAD)) {
rtnl_unlock();
flags |= TS_AUTOLOAD;
goto retry;
} else
return PTR_ERR(ts_conf);
} else if (flags & TS_AUTOLOAD) {
textsearch_destroy(ts_conf);
return -EAGAIN;
}
tm = kmalloc(sizeof(*tm), GFP_KERNEL);
if (tm == NULL) {
textsearch_destroy(ts_conf);
return -ENOBUFS;
}
tm->from_offset = conf->from_offset;
tm->to_offset = conf->to_offset;
tm->from_layer = conf->from_layer;
tm->to_layer = conf->to_layer;
tm->config = ts_conf;
m->datalen = sizeof(*tm);
m->data = (unsigned long) tm;
return 0;
}
static void __exit ip_conntrack_amanda_fini(void)
{
int i;
ip_conntrack_helper_unregister(&amanda_helper);
for (i = 0; i < ARRAY_SIZE(search); i++)
textsearch_destroy(search[i].ts);
}
static int __init ip_conntrack_amanda_init(void)
{
int ret, i;
ret = -ENOMEM;
for (i = 0; i < ARRAY_SIZE(search); i++) {
search[i].ts = textsearch_prepare(ts_algo, search[i].string,
search[i].len,
GFP_KERNEL, TS_AUTOLOAD);
if (search[i].ts == NULL)
goto err;
}
ret = ip_conntrack_helper_register(&amanda_helper);
if (ret < 0)
goto err;
return 0;
err:
for (; i >= 0; i--) {
if (search[i].ts)
textsearch_destroy(search[i].ts);
}
return ret;
}
static void string_mt_destroy(const struct xt_match *match, void *matchinfo)
{
textsearch_destroy(STRING_TEXT_PRIV(matchinfo)->config);
}
static void em_text_destroy(struct tcf_proto *tp, struct tcf_ematch *m)
{
textsearch_destroy(EM_TEXT_PRIV(m)->config);
}
static void string_mt_destroy(const struct xt_mtdtor_param *par)
{
textsearch_destroy(STRING_TEXT_PRIV(par->matchinfo)->config);
}
static void destroy(const struct xt_match *match, void *matchinfo,
unsigned int matchsize)
{
textsearch_destroy(STRING_TEXT_PRIV(matchinfo)->config);
}