| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1248177479-12669-1-git-send-email-remi.denis-courmont@nokia.com>
Date: Tue, 21 Jul 2009 14:57:57 +0300
From: Rémi Denis-Courmont
<remi.denis-courmont@...ia.com>
To: netdev@...r.kernel.org
Subject: [PATCH] Phonet: sockets list through proc_fs
From: Rémi Denis-Courmont <remi.denis-courmont@...ia.com>
This provides a list of sockets with their Phonet bind addresses and
some socket debug informations through /proc/net/phonet.
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@...ia.com>
---
include/net/phonet/pn_dev.h | 2 +
net/phonet/pn_dev.c | 7 +++
net/phonet/socket.c | 96 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 105 insertions(+), 0 deletions(-)
diff --git a/include/net/phonet/pn_dev.h b/include/net/phonet/pn_dev.h
index 29d1267..44c923c 100644
--- a/include/net/phonet/pn_dev.h
+++ b/include/net/phonet/pn_dev.h
@@ -49,4 +49,6 @@ void phonet_address_notify(int event, struct net_device *dev, u8 addr);
#define PN_NO_ADDR 0xff
+extern const struct file_operations pn_sock_seq_fops;
+
#endif
diff --git a/net/phonet/pn_dev.c b/net/phonet/pn_dev.c
index b0d6ddd..5107b79 100644
--- a/net/phonet/pn_dev.c
+++ b/net/phonet/pn_dev.c
@@ -218,6 +218,11 @@ static int phonet_init_net(struct net *net)
if (!pnn)
return -ENOMEM;
+ if (!proc_net_fops_create(net, "phonet", 0, &pn_sock_seq_fops)) {
+ kfree(pnn);
+ return -ENOMEM;
+ }
+
INIT_LIST_HEAD(&pnn->pndevs.list);
spin_lock_init(&pnn->pndevs.lock);
net_assign_generic(net, phonet_net_id, pnn);
@@ -233,6 +238,8 @@ static void phonet_exit_net(struct net *net)
for_each_netdev(net, dev)
phonet_device_destroy(dev);
rtnl_unlock();
+
+ proc_net_remove(net, "phonet");
kfree(pnn);
}
diff --git a/net/phonet/socket.c b/net/phonet/socket.c
index ada2a35..aa1617a 100644
--- a/net/phonet/socket.c
+++ b/net/phonet/socket.c
@@ -412,3 +412,99 @@ found:
return 0;
}
EXPORT_SYMBOL(pn_sock_get_port);
+
+static struct sock *pn_sock_get_idx(struct seq_file *seq, loff_t pos)
+{
+ struct net *net = seq_file_net(seq);
+ struct hlist_node *node;
+ struct sock *sknode;
+
+ sk_for_each(sknode, node, &pnsocks.hlist) {
+ if (!net_eq(net, sock_net(sknode)))
+ continue;
+ if (!pos)
+ return sknode;
+ pos--;
+ }
+ return NULL;
+}
+
+static struct sock *pn_sock_get_next(struct seq_file *seq, struct sock *sk)
+{
+ struct net *net = seq_file_net(seq);
+
+ do
+ sk = sk_next(sk);
+ while (sk && !net_eq(net, sock_net(sk)));
+
+ return sk;
+}
+
+static void *pn_sock_seq_start(struct seq_file *seq, loff_t *pos)
+ __acquires(pnsocks.lock)
+{
+ spin_lock_bh(&pnsocks.lock);
+ return *pos ? pn_sock_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
+}
+
+static void *pn_sock_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ struct sock *sk;
+
+ if (v == SEQ_START_TOKEN)
+ sk = pn_sock_get_idx(seq, 0);
+ else
+ sk = pn_sock_get_next(seq, v);
+ (*pos)++;
+ return sk;
+}
+
+static void pn_sock_seq_stop(struct seq_file *seq, void *v)
+ __releases(pnsocks.lock)
+{
+ spin_unlock_bh(&pnsocks.lock);
+}
+
+static int pn_sock_seq_show(struct seq_file *seq, void *v)
+{
+ int len;
+
+ if (v == SEQ_START_TOKEN)
+ seq_printf(seq, "%s%n", "pt loc rem rs st tx_queue rx_queue "
+ " uid inode ref pointer drops", &len);
+ else {
+ struct sock *sk = v;
+ struct pn_sock *pn = pn_sk(sk);
+
+ seq_printf(seq, "%2d %04X:%04X:%02X %02X %08X:%08X %5d %lu "
+ "%d %p %d%n",
+ sk->sk_protocol, pn->sobject, 0, pn->resource,
+ sk->sk_state,
+ sk_wmem_alloc_get(sk), sk_rmem_alloc_get(sk),
+ sock_i_uid(sk), sock_i_ino(sk),
+ atomic_read(&sk->sk_refcnt), sk,
+ atomic_read(&sk->sk_drops), &len);
+ }
+ seq_printf(seq, "%*s\n", 127 - len, "");
+ return 0;
+}
+
+static const struct seq_operations pn_sock_seq_ops = {
+ .start = pn_sock_seq_start,
+ .next = pn_sock_seq_next,
+ .stop = pn_sock_seq_stop,
+ .show = pn_sock_seq_show,
+};
+
+static int pn_sock_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &pn_sock_seq_ops);
+}
+
+const struct file_operations pn_sock_seq_fops = {
+ .owner = THIS_MODULE,
+ .open = pn_sock_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
--
1.6.0.4
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists