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netfilter: print the list of register loggers

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This patch modifies the proc output to add display of registered
loggers. The content of /proc/net/netfilter/nf_log is modified. Instead
of displaying a protocol per line with format:
	proto:logger
it now displays:
	proto:logger (comma_separated_list_of_loggers)
NONE is used as keyword if no logger is used.

Signed-off-by: Eric Leblond <eric@inl.fr>
Signed-off-by: Patrick McHardy <kaber@trash.net>
This commit is contained in:
Eric Leblond 2009-03-16 14:55:27 +01:00 committed by Patrick McHardy
parent ca735b3aaa
commit c7a913cd55
1 changed files with 26 additions and 2 deletions
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28
net/netfilter/nf_log.c
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@ -154,13 +154,37 @@ static int seq_show(struct seq_file *s, void *v)
{
loff_t *pos = v;
const struct nf_logger *logger;
struct nf_logger *t;
int ret;
logger = rcu_dereference(nf_loggers[*pos]);
if (!logger)
return seq_printf(s, "%2lld NONE\n", *pos);
ret = seq_printf(s, "%2lld NONE (", *pos);
else
ret = seq_printf(s, "%2lld %s (", *pos, logger->name);
return seq_printf(s, "%2lld %s\n", *pos, logger->name);
if (ret < 0)
return ret;
mutex_lock(&nf_log_mutex);
list_for_each_entry(t, &nf_loggers_l[*pos], list[*pos]) {
ret = seq_printf(s, "%s", t->name);
if (ret < 0) {
mutex_unlock(&nf_log_mutex);
return ret;
}
if (&t->list[*pos] != nf_loggers_l[*pos].prev) {
ret = seq_printf(s, ",");
if (ret < 0) {
mutex_unlock(&nf_log_mutex);
return ret;
}
}
}
mutex_unlock(&nf_log_mutex);
return seq_printf(s, ")\n");
}
static const struct seq_operations nflog_seq_ops = {