1 files changed, 358 insertions, 0 deletions
diff --git a/net/x25/x25_proc.c b/net/x25/x25_proc.c
new file mode 100644
index 0000000..1afa44d
--- /dev/null
+++ b/net/x25/x25_proc.c
@@ -0,0 +1,358 @@
+/*
+ *	X.25 Packet Layer release 002
+ *
+ *	This is ALPHA test software. This code may break your machine,
+ *	randomly fail to work with new releases, misbehave and/or generally
+ *	screw up. It might even work.
+ *
+ *	This code REQUIRES 2.4 with seq_file support
+ *
+ *	This module:
+ *		This module is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ *
+ *	History
+ *	2002/10/06	Arnaldo Carvalho de Melo  seq_file support
+ */
+
+#include <linux/init.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <net/net_namespace.h>
+#include <net/sock.h>
+#include <net/x25.h>
+
+#ifdef CONFIG_PROC_FS
+static __inline__ struct x25_route *x25_get_route_idx(loff_t pos)
+{
+	struct list_head *route_entry;
+	struct x25_route *rt = NULL;
+
+	list_for_each(route_entry, &x25_route_list) {
+		rt = list_entry(route_entry, struct x25_route, node);
+		if (!pos--)
+			goto found;
+	}
+	rt = NULL;
+found:
+	return rt;
+}
+
+static void *x25_seq_route_start(struct seq_file *seq, loff_t *pos)
+	__acquires(x25_route_list_lock)
+{
+	loff_t l = *pos;
+
+	read_lock_bh(&x25_route_list_lock);
+	return l ? x25_get_route_idx(--l) : SEQ_START_TOKEN;
+}
+
+static void *x25_seq_route_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct x25_route *rt;
+
+	++*pos;
+	if (v == SEQ_START_TOKEN) {
+		rt = NULL;
+		if (!list_empty(&x25_route_list))
+			rt = list_entry(x25_route_list.next,
+					struct x25_route, node);
+		goto out;
+	}
+	rt = v;
+	if (rt->node.next != &x25_route_list)
+		rt = list_entry(rt->node.next, struct x25_route, node);
+	else
+		rt = NULL;
+out:
+	return rt;
+}
+
+static void x25_seq_route_stop(struct seq_file *seq, void *v)
+	__releases(x25_route_list_lock)
+{
+	read_unlock_bh(&x25_route_list_lock);
+}
+
+static int x25_seq_route_show(struct seq_file *seq, void *v)
+{
+	struct x25_route *rt;
+
+	if (v == SEQ_START_TOKEN) {
+		seq_puts(seq, "Address          Digits  Device\n");
+		goto out;
+	}
+
+	rt = v;
+	seq_printf(seq, "%-15s  %-6d  %-5s\n",
+		   rt->address.x25_addr, rt->sigdigits,
+		   rt->dev ? rt->dev->name : "???");
+out:
+	return 0;
+}
+
+static __inline__ struct sock *x25_get_socket_idx(loff_t pos)
+{
+	struct sock *s;
+	struct hlist_node *node;
+
+	sk_for_each(s, node, &x25_list)
+		if (!pos--)
+			goto found;
+	s = NULL;
+found:
+	return s;
+}
+
+static void *x25_seq_socket_start(struct seq_file *seq, loff_t *pos)
+	__acquires(x25_list_lock)
+{
+	loff_t l = *pos;
+
+	read_lock_bh(&x25_list_lock);
+	return l ? x25_get_socket_idx(--l) : SEQ_START_TOKEN;
+}
+
+static void *x25_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct sock *s;
+
+	++*pos;
+	if (v == SEQ_START_TOKEN) {
+		s = sk_head(&x25_list);
+		goto out;
+	}
+	s = sk_next(v);
+out:
+	return s;
+}
+
+static void x25_seq_socket_stop(struct seq_file *seq, void *v)
+	__releases(x25_list_lock)
+{
+	read_unlock_bh(&x25_list_lock);
+}
+
+static int x25_seq_socket_show(struct seq_file *seq, void *v)
+{
+	struct sock *s;
+	struct x25_sock *x25;
+	struct net_device *dev;
+	const char *devname;
+
+	if (v == SEQ_START_TOKEN) {
+		seq_printf(seq, "dest_addr  src_addr   dev   lci st vs vr "
+				"va   t  t2 t21 t22 t23 Snd-Q Rcv-Q inode\n");
+		goto out;
+	}
+
+	s = v;
+	x25 = x25_sk(s);
+
+	if (!x25->neighbour || (dev = x25->neighbour->dev) == NULL)
+		devname = "???";
+	else
+		devname = x25->neighbour->dev->name;
+
+	seq_printf(seq, "%-10s %-10s %-5s %3.3X  %d  %d  %d  %d %3lu %3lu "
+			"%3lu %3lu %3lu %5d %5d %ld\n",
+		   !x25->dest_addr.x25_addr[0] ? "*" : x25->dest_addr.x25_addr,
+		   !x25->source_addr.x25_addr[0] ? "*" : x25->source_addr.x25_addr,
+		   devname, x25->lci & 0x0FFF, x25->state, x25->vs, x25->vr,
+		   x25->va, x25_display_timer(s) / HZ, x25->t2  / HZ,
+		   x25->t21 / HZ, x25->t22 / HZ, x25->t23 / HZ,
+		   atomic_read(&s->sk_wmem_alloc),
+		   atomic_read(&s->sk_rmem_alloc),
+		   s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
+out:
+	return 0;
+}
+
+static __inline__ struct x25_forward *x25_get_forward_idx(loff_t pos)
+{
+	struct x25_forward *f;
+	struct list_head *entry;
+
+	list_for_each(entry, &x25_forward_list) {
+		f = list_entry(entry, struct x25_forward, node);
+		if (!pos--)
+			goto found;
+	}
+
+	f = NULL;
+found:
+	return f;
+}
+
+static void *x25_seq_forward_start(struct seq_file *seq, loff_t *pos)
+	__acquires(x25_forward_list_lock)
+{
+	loff_t l = *pos;
+
+	read_lock_bh(&x25_forward_list_lock);
+	return l ? x25_get_forward_idx(--l) : SEQ_START_TOKEN;
+}
+
+static void *x25_seq_forward_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct x25_forward *f;
+
+	++*pos;
+	if (v == SEQ_START_TOKEN) {
+		f = NULL;
+		if (!list_empty(&x25_forward_list))
+			f = list_entry(x25_forward_list.next,
+					struct x25_forward, node);
+		goto out;
+	}
+	f = v;
+	if (f->node.next != &x25_forward_list)
+		f = list_entry(f->node.next, struct x25_forward, node);
+	else
+		f = NULL;
+out:
+	return f;
+
+}
+
+static void x25_seq_forward_stop(struct seq_file *seq, void *v)
+	__releases(x25_forward_list_lock)
+{
+	read_unlock_bh(&x25_forward_list_lock);
+}
+
+static int x25_seq_forward_show(struct seq_file *seq, void *v)
+{
+	struct x25_forward *f;
+
+	if (v == SEQ_START_TOKEN) {
+		seq_printf(seq, "lci dev1       dev2\n");
+		goto out;
+	}
+
+	f = v;
+
+	seq_printf(seq, "%d %-10s %-10s\n",
+			f->lci, f->dev1->name, f->dev2->name);
+
+out:
+	return 0;
+}
+
+static const struct seq_operations x25_seq_route_ops = {
+	.start  = x25_seq_route_start,
+	.next   = x25_seq_route_next,
+	.stop   = x25_seq_route_stop,
+	.show   = x25_seq_route_show,
+};
+
+static const struct seq_operations x25_seq_socket_ops = {
+	.start  = x25_seq_socket_start,
+	.next   = x25_seq_socket_next,
+	.stop   = x25_seq_socket_stop,
+	.show   = x25_seq_socket_show,
+};
+
+static const struct seq_operations x25_seq_forward_ops = {
+	.start  = x25_seq_forward_start,
+	.next   = x25_seq_forward_next,
+	.stop   = x25_seq_forward_stop,
+	.show   = x25_seq_forward_show,
+};
+
+static int x25_seq_socket_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &x25_seq_socket_ops);
+}
+
+static int x25_seq_route_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &x25_seq_route_ops);
+}
+
+static int x25_seq_forward_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &x25_seq_forward_ops);
+}
+
+static const struct file_operations x25_seq_socket_fops = {
+	.owner		= THIS_MODULE,
+	.open		= x25_seq_socket_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+
+static const struct file_operations x25_seq_route_fops = {
+	.owner		= THIS_MODULE,
+	.open		= x25_seq_route_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+
+static const struct file_operations x25_seq_forward_fops = {
+	.owner		= THIS_MODULE,
+	.open		= x25_seq_forward_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+
+static struct proc_dir_entry *x25_proc_dir;
+
+int __init x25_proc_init(void)
+{
+	struct proc_dir_entry *p;
+	int rc = -ENOMEM;
+
+	x25_proc_dir = proc_mkdir("x25", init_net.proc_net);
+	if (!x25_proc_dir)
+		goto out;
+
+	p = proc_create("route", S_IRUGO, x25_proc_dir, &x25_seq_route_fops);
+	if (!p)
+		goto out_route;
+
+	p = proc_create("socket", S_IRUGO, x25_proc_dir, &x25_seq_socket_fops);
+	if (!p)
+		goto out_socket;
+
+	p = proc_create("forward", S_IRUGO, x25_proc_dir,
+			&x25_seq_forward_fops);
+	if (!p)
+		goto out_forward;
+	rc = 0;
+
+out:
+	return rc;
+out_forward:
+	remove_proc_entry("socket", x25_proc_dir);
+out_socket:
+	remove_proc_entry("route", x25_proc_dir);
+out_route:
+	remove_proc_entry("x25", init_net.proc_net);
+	goto out;
+}
+
+void __exit x25_proc_exit(void)
+{
+	remove_proc_entry("forward", x25_proc_dir);
+	remove_proc_entry("route", x25_proc_dir);
+	remove_proc_entry("socket", x25_proc_dir);
+	remove_proc_entry("x25", init_net.proc_net);
+}
+
+#else /* CONFIG_PROC_FS */
+
+int __init x25_proc_init(void)
+{
+	return 0;
+}
+
+void __exit x25_proc_exit(void)
+{
+}
+#endif /* CONFIG_PROC_FS */