net/x25/x25_proc.c - kernel/msm-4.9 - Gitiles

 /*
  *	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 = create_proc_entry("route", S_IRUGO, x25_proc_dir);
 	if (!p)
 		goto out_route;
 	p->proc_fops = &x25_seq_route_fops;

 	p = create_proc_entry("socket", S_IRUGO, x25_proc_dir);
 	if (!p)
 		goto out_socket;
 	p->proc_fops = &x25_seq_socket_fops;

 	p = create_proc_entry("forward", S_IRUGO, x25_proc_dir);
 	if (!p)
 		goto out_forward;
 	p->proc_fops = &x25_seq_forward_fops;
 	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 */
	/*
	* 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 = create_proc_entry("route", S_IRUGO, x25_proc_dir);
	if (!p)
	goto out_route;
	p->proc_fops = &x25_seq_route_fops;

	p = create_proc_entry("socket", S_IRUGO, x25_proc_dir);
	if (!p)
	goto out_socket;
	p->proc_fops = &x25_seq_socket_fops;

	p = create_proc_entry("forward", S_IRUGO, x25_proc_dir);
	if (!p)
	goto out_forward;
	p->proc_fops = &x25_seq_forward_fops;
	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 */