ipx_proc.c - linux/ipx-linux - Rivoreo Source Code Repositories

 // SPDX-License-Identifier: GPL-2.0
 /*
  *	IPX proc routines
  *
  * 	Copyright(C) Arnaldo Carvalho de Melo <acme@conectiva.com.br>, 2002
  */

 #include <linux/version.h>
 #include <linux/init.h>
 #ifdef CONFIG_PROC_FS
 #include <linux/proc_fs.h>
 #include <linux/spinlock.h>
 #include <linux/seq_file.h>
 #include <linux/export.h>
 #include <net/net_namespace.h>
 #include <net/tcp_states.h>
 #include <net/ipx.h>

 static void *ipx_seq_interface_start(struct seq_file *seq, loff_t *pos)
 {
 	spin_lock_bh(&ipx_interfaces_lock);
 	return seq_list_start_head(&ipx_interfaces, *pos);
 }

 static void *ipx_seq_interface_next(struct seq_file *seq, void *v, loff_t *pos)
 {
 	return seq_list_next(v, &ipx_interfaces, pos);
 }

 static void ipx_seq_interface_stop(struct seq_file *seq, void *v)
 {
 	spin_unlock_bh(&ipx_interfaces_lock);
 }

 static int ipx_seq_interface_show(struct seq_file *seq, void *v)
 {
 	struct ipx_interface *i;

 	if (v == &ipx_interfaces) {
 		seq_puts(seq, "Network    Node_Address   Primary  Device     "
 			      "Frame_Type");
 #ifdef IPX_REFCNT_DEBUG
 		seq_puts(seq, "  refcnt");
 #endif
 		seq_puts(seq, "\n");
 		goto out;
 	}

 	i = list_entry(v, struct ipx_interface, node);
 	seq_printf(seq, "%08X   ", ntohl(i->if_netnum));
 	seq_printf(seq, "%02X%02X%02X%02X%02X%02X   ",
 			i->if_node[0], i->if_node[1], i->if_node[2],
 			i->if_node[3], i->if_node[4], i->if_node[5]);
 	seq_printf(seq, "%-9s", i == ipx_primary_net ? "Yes" : "No");
 	seq_printf(seq, "%-11s", ipx_device_name(i));
 	seq_printf(seq, "%-9s", ipx_frame_name(i->if_dlink_type));
 #ifdef IPX_REFCNT_DEBUG
 	seq_printf(seq, "%6d", refcount_read(&i->refcnt));
 #endif
 	seq_puts(seq, "\n");
 out:
 	return 0;
 }

 static void *ipx_seq_route_start(struct seq_file *seq, loff_t *pos)
 {
 	read_lock_bh(&ipx_routes_lock);
 	return seq_list_start_head(&ipx_routes, *pos);
 }

 static void *ipx_seq_route_next(struct seq_file *seq, void *v, loff_t *pos)
 {
 	return seq_list_next(v, &ipx_routes, pos);
 }

 static void ipx_seq_route_stop(struct seq_file *seq, void *v)
 {
 	read_unlock_bh(&ipx_routes_lock);
 }

 static int ipx_seq_route_show(struct seq_file *seq, void *v)
 {
 	struct ipx_route *rt;

 	if (v == &ipx_routes) {
 		seq_puts(seq, "Network    Router_Net   Router_Node\n");
 		goto out;
 	}

 	rt = list_entry(v, struct ipx_route, node);

 	seq_printf(seq, "%08X   ", ntohl(rt->ir_net));
 	if (rt->ir_routed)
 		seq_printf(seq, "%08X     %02X%02X%02X%02X%02X%02X\n",
 			   ntohl(rt->ir_intrfc->if_netnum),
 			   rt->ir_router_node[0], rt->ir_router_node[1],
 			   rt->ir_router_node[2], rt->ir_router_node[3],
 			   rt->ir_router_node[4], rt->ir_router_node[5]);
 	else
 		seq_puts(seq, "Directly     Connected\n");
 out:
 	return 0;
 }

 static __inline__ struct sock *ipx_get_socket_idx(loff_t pos)
 {
 	struct sock *s = NULL;
 	struct ipx_interface *i;

 	list_for_each_entry(i, &ipx_interfaces, node) {
 		spin_lock_bh(&i->if_sklist_lock);
 		sk_for_each(s, &i->if_sklist) {
 			if (!pos)
 				break;
 			--pos;
 		}
 		spin_unlock_bh(&i->if_sklist_lock);
 		if (!pos) {
 			if (s)
 				goto found;
 			break;
 		}
 	}
 	s = NULL;
 found:
 	return s;
 }

 static void *ipx_seq_socket_start(struct seq_file *seq, loff_t *pos)
 {
 	loff_t l = *pos;

 	spin_lock_bh(&ipx_interfaces_lock);
 	return l ? ipx_get_socket_idx(--l) : SEQ_START_TOKEN;
 }

 static void *ipx_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos)
 {
 	struct sock* sk, *next;
 	struct ipx_interface *i;
 	struct ipx_sock *ipxs;

 	++*pos;
 	if (v == SEQ_START_TOKEN) {
 		sk = NULL;
 		i = ipx_interfaces_head();
 		if (!i)
 			goto out;
 		sk = sk_head(&i->if_sklist);
 		if (sk)
 			spin_lock_bh(&i->if_sklist_lock);
 		goto out;
 	}
 	sk = v;
 	next = sk_next(sk);
 	if (next) {
 		sk = next;
 		goto out;
 	}
 	ipxs = ipx_sk(sk);
 	i = ipxs->intrfc;
 	spin_unlock_bh(&i->if_sklist_lock);
 	sk = NULL;
 	for (;;) {
 		if (i->node.next == &ipx_interfaces)
 			break;
 		i = list_entry(i->node.next, struct ipx_interface, node);
 		spin_lock_bh(&i->if_sklist_lock);
 		if (!hlist_empty(&i->if_sklist)) {
 			sk = sk_head(&i->if_sklist);
 			break;
 		}
 		spin_unlock_bh(&i->if_sklist_lock);
 	}
 out:
 	return sk;
 }

 static int ipx_seq_socket_show(struct seq_file *seq, void *v)
 {
 	struct sock *s;
 	struct ipx_sock *ipxs;

 	if (v == SEQ_START_TOKEN) {
 #ifdef CONFIG_IPX_INTERN
 		seq_puts(seq, "Local_Address               "
 			      "Remote_Address              Tx_Queue  "
 			      "Rx_Queue  State  Uid\n");
 #else
 		seq_puts(seq, "Local_Address  Remote_Address              "
 			      "Tx_Queue  Rx_Queue  State  Uid\n");
 #endif
 		goto out;
 	}

 	s = v;
 	ipxs = ipx_sk(s);
 #ifdef CONFIG_IPX_INTERN
 	seq_printf(seq, "%08X:%02X%02X%02X%02X%02X%02X:%04X  ",
 		   ntohl(ipxs->intrfc->if_netnum),
 		   ipxs->node[0], ipxs->node[1], ipxs->node[2], ipxs->node[3],
 		   ipxs->node[4], ipxs->node[5], ntohs(ipxs->port));
 #else
 	seq_printf(seq, "%08X:%04X  ", ntohl(ipxs->intrfc->if_netnum),
 		   ntohs(ipxs->port));
 #endif	/* CONFIG_IPX_INTERN */
 	if (s->sk_state != TCP_ESTABLISHED)
 		seq_printf(seq, "%-28s", "Not_Connected");
 	else {
 		seq_printf(seq, "%08X:%02X%02X%02X%02X%02X%02X:%04X  ",
 			   ntohl(ipxs->dest_addr.net),
 			   ipxs->dest_addr.node[0], ipxs->dest_addr.node[1],
 			   ipxs->dest_addr.node[2], ipxs->dest_addr.node[3],
 			   ipxs->dest_addr.node[4], ipxs->dest_addr.node[5],
 			   ntohs(ipxs->dest_addr.sock));
 	}

 	seq_printf(seq, "%08X  %08X  %02X     %03u\n",
 		   sk_wmem_alloc_get(s),
 		   sk_rmem_alloc_get(s),
 		   s->sk_state,
 		   from_kuid_munged(seq_user_ns(seq), sock_i_uid(s)));
 out:
 	return 0;
 }

 static const struct seq_operations ipx_seq_interface_ops = {
 	.start  = ipx_seq_interface_start,
 	.next   = ipx_seq_interface_next,
 	.stop   = ipx_seq_interface_stop,
 	.show   = ipx_seq_interface_show,
 };

 static const struct seq_operations ipx_seq_route_ops = {
 	.start  = ipx_seq_route_start,
 	.next   = ipx_seq_route_next,
 	.stop   = ipx_seq_route_stop,
 	.show   = ipx_seq_route_show,
 };

 static const struct seq_operations ipx_seq_socket_ops = {
 	.start  = ipx_seq_socket_start,
 	.next   = ipx_seq_socket_next,
 	.stop   = ipx_seq_interface_stop,
 	.show   = ipx_seq_socket_show,
 };

 static int ipx_seq_route_open(struct inode *inode, struct file *file)
 {
 	return seq_open(file, &ipx_seq_route_ops);
 }

 static int ipx_seq_interface_open(struct inode *inode, struct file *file)
 {
 	return seq_open(file, &ipx_seq_interface_ops);
 }

 static int ipx_seq_socket_open(struct inode *inode, struct file *file)
 {
 	return seq_open(file, &ipx_seq_socket_ops);
 }

 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,5,0)
 static const struct file_operations ipx_seq_interface_fops = {
 	.owner		= THIS_MODULE,
 	.open           = ipx_seq_interface_open,
 	.read           = seq_read,
 	.llseek         = seq_lseek,
 	.release        = seq_release,
 };

 static const struct file_operations ipx_seq_route_fops = {
 	.owner		= THIS_MODULE,
 	.open           = ipx_seq_route_open,
 	.read           = seq_read,
 	.llseek         = seq_lseek,
 	.release        = seq_release,
 };

 static const struct file_operations ipx_seq_socket_fops = {
 	.owner		= THIS_MODULE,
 	.open           = ipx_seq_socket_open,
 	.read           = seq_read,
 	.llseek         = seq_lseek,
 	.release        = seq_release,
 };
 #else
 static const struct proc_ops ipx_seq_interface_fops = {
 	.proc_open	= ipx_seq_interface_open,
 	.proc_read	= seq_read,
 	.proc_lseek	= seq_lseek,
 	.proc_release	= seq_release,
 };

 static const struct proc_ops ipx_seq_route_fops = {
 	.proc_open	= ipx_seq_route_open,
 	.proc_read	= seq_read,
 	.proc_lseek	= seq_lseek,
 	.proc_release	= seq_release,
 };

 static const struct proc_ops ipx_seq_socket_fops = {
 	.proc_open	= ipx_seq_socket_open,
 	.proc_read	= seq_read,
 	.proc_lseek	= seq_lseek,
 	.proc_release	= seq_release,
 };
 #endif

 static struct proc_dir_entry *ipx_proc_dir;

 int __init ipx_proc_init(void)
 {
 	struct proc_dir_entry *p;
 	int rc = -ENOMEM;

 	ipx_proc_dir = proc_mkdir("ipx", init_net.proc_net);

 	if (!ipx_proc_dir)
 		goto out;
 	p = proc_create("interface", S_IRUGO,
 			ipx_proc_dir, &ipx_seq_interface_fops);
 	if (!p)
 		goto out_interface;

 	p = proc_create("route", S_IRUGO, ipx_proc_dir, &ipx_seq_route_fops);
 	if (!p)
 		goto out_route;

 	p = proc_create("socket", S_IRUGO, ipx_proc_dir, &ipx_seq_socket_fops);
 	if (!p)
 		goto out_socket;

 	rc = 0;
 out:
 	return rc;
 out_socket:
 	remove_proc_entry("route", ipx_proc_dir);
 out_route:
 	remove_proc_entry("interface", ipx_proc_dir);
 out_interface:
 	remove_proc_entry("ipx", init_net.proc_net);
 	goto out;
 }

 void __exit ipx_proc_exit(void)
 {
 	remove_proc_entry("interface", ipx_proc_dir);
 	remove_proc_entry("route", ipx_proc_dir);
 	remove_proc_entry("socket", ipx_proc_dir);
 	remove_proc_entry("ipx", init_net.proc_net);
 }

 #else /* CONFIG_PROC_FS */

 int __init ipx_proc_init(void)
 {
 	return 0;
 }

 void __exit ipx_proc_exit(void)
 {
 }

 #endif /* CONFIG_PROC_FS */
	// SPDX-License-Identifier: GPL-2.0
	/*
	* IPX proc routines
	*
	* Copyright(C) Arnaldo Carvalho de Melo <acme@conectiva.com.br>, 2002
	*/

	#include <linux/version.h>
	#include <linux/init.h>
	#ifdef CONFIG_PROC_FS
	#include <linux/proc_fs.h>
	#include <linux/spinlock.h>
	#include <linux/seq_file.h>
	#include <linux/export.h>
	#include <net/net_namespace.h>
	#include <net/tcp_states.h>
	#include <net/ipx.h>

	static void ipx_seq_interface_start(struct seq_file seq, loff_t *pos)
	{
	spin_lock_bh(&ipx_interfaces_lock);
	return seq_list_start_head(&ipx_interfaces, *pos);
	}

	static void ipx_seq_interface_next(struct seq_file seq, void v, loff_t pos)
	{
	return seq_list_next(v, &ipx_interfaces, pos);
	}

	static void ipx_seq_interface_stop(struct seq_file seq, void v)
	{
	spin_unlock_bh(&ipx_interfaces_lock);
	}

	static int ipx_seq_interface_show(struct seq_file seq, void v)
	{
	struct ipx_interface *i;

	if (v == &ipx_interfaces) {
	seq_puts(seq, "Network Node_Address Primary Device "
	"Frame_Type");
	#ifdef IPX_REFCNT_DEBUG
	seq_puts(seq, " refcnt");
	#endif
	seq_puts(seq, "\n");
	goto out;
	}

	i = list_entry(v, struct ipx_interface, node);
	seq_printf(seq, "%08X ", ntohl(i->if_netnum));
	seq_printf(seq, "%02X%02X%02X%02X%02X%02X ",
	i->if_node[0], i->if_node[1], i->if_node[2],
	i->if_node[3], i->if_node[4], i->if_node[5]);
	seq_printf(seq, "%-9s", i == ipx_primary_net ? "Yes" : "No");
	seq_printf(seq, "%-11s", ipx_device_name(i));
	seq_printf(seq, "%-9s", ipx_frame_name(i->if_dlink_type));
	#ifdef IPX_REFCNT_DEBUG
	seq_printf(seq, "%6d", refcount_read(&i->refcnt));
	#endif
	seq_puts(seq, "\n");
	out:
	return 0;
	}

	static void ipx_seq_route_start(struct seq_file seq, loff_t *pos)
	{
	read_lock_bh(&ipx_routes_lock);
	return seq_list_start_head(&ipx_routes, *pos);
	}

	static void ipx_seq_route_next(struct seq_file seq, void v, loff_t pos)
	{
	return seq_list_next(v, &ipx_routes, pos);
	}

	static void ipx_seq_route_stop(struct seq_file seq, void v)
	{
	read_unlock_bh(&ipx_routes_lock);
	}

	static int ipx_seq_route_show(struct seq_file seq, void v)
	{
	struct ipx_route *rt;

	if (v == &ipx_routes) {
	seq_puts(seq, "Network Router_Net Router_Node\n");
	goto out;
	}

	rt = list_entry(v, struct ipx_route, node);

	seq_printf(seq, "%08X ", ntohl(rt->ir_net));
	if (rt->ir_routed)
	seq_printf(seq, "%08X %02X%02X%02X%02X%02X%02X\n",
	ntohl(rt->ir_intrfc->if_netnum),
	rt->ir_router_node[0], rt->ir_router_node[1],
	rt->ir_router_node[2], rt->ir_router_node[3],
	rt->ir_router_node[4], rt->ir_router_node[5]);
	else
	seq_puts(seq, "Directly Connected\n");
	out:
	return 0;
	}

	static __inline__ struct sock *ipx_get_socket_idx(loff_t pos)
	{
	struct sock *s = NULL;
	struct ipx_interface *i;

	list_for_each_entry(i, &ipx_interfaces, node) {
	spin_lock_bh(&i->if_sklist_lock);
	sk_for_each(s, &i->if_sklist) {
	if (!pos)
	break;
	--pos;
	}
	spin_unlock_bh(&i->if_sklist_lock);
	if (!pos) {
	if (s)
	goto found;
	break;
	}
	}
	s = NULL;
	found:
	return s;
	}

	static void ipx_seq_socket_start(struct seq_file seq, loff_t *pos)
	{
	loff_t l = *pos;

	spin_lock_bh(&ipx_interfaces_lock);
	return l ? ipx_get_socket_idx(--l) : SEQ_START_TOKEN;
	}

	static void ipx_seq_socket_next(struct seq_file seq, void v, loff_t pos)
	{
	struct sock* sk, *next;
	struct ipx_interface *i;
	struct ipx_sock *ipxs;

	++*pos;
	if (v == SEQ_START_TOKEN) {
	sk = NULL;
	i = ipx_interfaces_head();
	if (!i)
	goto out;
	sk = sk_head(&i->if_sklist);
	if (sk)
	spin_lock_bh(&i->if_sklist_lock);
	goto out;
	}
	sk = v;
	next = sk_next(sk);
	if (next) {
	sk = next;
	goto out;
	}
	ipxs = ipx_sk(sk);
	i = ipxs->intrfc;
	spin_unlock_bh(&i->if_sklist_lock);
	sk = NULL;
	for (;;) {
	if (i->node.next == &ipx_interfaces)
	break;
	i = list_entry(i->node.next, struct ipx_interface, node);
	spin_lock_bh(&i->if_sklist_lock);
	if (!hlist_empty(&i->if_sklist)) {
	sk = sk_head(&i->if_sklist);
	break;
	}
	spin_unlock_bh(&i->if_sklist_lock);
	}
	out:
	return sk;
	}

	static int ipx_seq_socket_show(struct seq_file seq, void v)
	{
	struct sock *s;
	struct ipx_sock *ipxs;

	if (v == SEQ_START_TOKEN) {
	#ifdef CONFIG_IPX_INTERN
	seq_puts(seq, "Local_Address "
	"Remote_Address Tx_Queue "
	"Rx_Queue State Uid\n");
	#else
	seq_puts(seq, "Local_Address Remote_Address "
	"Tx_Queue Rx_Queue State Uid\n");
	#endif
	goto out;
	}

	s = v;
	ipxs = ipx_sk(s);
	#ifdef CONFIG_IPX_INTERN
	seq_printf(seq, "%08X:%02X%02X%02X%02X%02X%02X:%04X ",
	ntohl(ipxs->intrfc->if_netnum),
	ipxs->node[0], ipxs->node[1], ipxs->node[2], ipxs->node[3],
	ipxs->node[4], ipxs->node[5], ntohs(ipxs->port));
	#else
	seq_printf(seq, "%08X:%04X ", ntohl(ipxs->intrfc->if_netnum),
	ntohs(ipxs->port));
	#endif /* CONFIG_IPX_INTERN */
	if (s->sk_state != TCP_ESTABLISHED)
	seq_printf(seq, "%-28s", "Not_Connected");
	else {
	seq_printf(seq, "%08X:%02X%02X%02X%02X%02X%02X:%04X ",
	ntohl(ipxs->dest_addr.net),
	ipxs->dest_addr.node[0], ipxs->dest_addr.node[1],
	ipxs->dest_addr.node[2], ipxs->dest_addr.node[3],
	ipxs->dest_addr.node[4], ipxs->dest_addr.node[5],
	ntohs(ipxs->dest_addr.sock));
	}

	seq_printf(seq, "%08X %08X %02X %03u\n",
	sk_wmem_alloc_get(s),
	sk_rmem_alloc_get(s),
	s->sk_state,
	from_kuid_munged(seq_user_ns(seq), sock_i_uid(s)));
	out:
	return 0;
	}

	static const struct seq_operations ipx_seq_interface_ops = {
	.start = ipx_seq_interface_start,
	.next = ipx_seq_interface_next,
	.stop = ipx_seq_interface_stop,
	.show = ipx_seq_interface_show,
	};

	static const struct seq_operations ipx_seq_route_ops = {
	.start = ipx_seq_route_start,
	.next = ipx_seq_route_next,
	.stop = ipx_seq_route_stop,
	.show = ipx_seq_route_show,
	};

	static const struct seq_operations ipx_seq_socket_ops = {
	.start = ipx_seq_socket_start,
	.next = ipx_seq_socket_next,
	.stop = ipx_seq_interface_stop,
	.show = ipx_seq_socket_show,
	};

	static int ipx_seq_route_open(struct inode inode, struct file file)
	{
	return seq_open(file, &ipx_seq_route_ops);
	}

	static int ipx_seq_interface_open(struct inode inode, struct file file)
	{
	return seq_open(file, &ipx_seq_interface_ops);
	}

	static int ipx_seq_socket_open(struct inode inode, struct file file)
	{
	return seq_open(file, &ipx_seq_socket_ops);
	}

	#if LINUX_VERSION_CODE < KERNEL_VERSION(5,5,0)
	static const struct file_operations ipx_seq_interface_fops = {
	.owner = THIS_MODULE,
	.open = ipx_seq_interface_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = seq_release,
	};

	static const struct file_operations ipx_seq_route_fops = {
	.owner = THIS_MODULE,
	.open = ipx_seq_route_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = seq_release,
	};

	static const struct file_operations ipx_seq_socket_fops = {
	.owner = THIS_MODULE,
	.open = ipx_seq_socket_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = seq_release,
	};
	#else
	static const struct proc_ops ipx_seq_interface_fops = {
	.proc_open = ipx_seq_interface_open,
	.proc_read = seq_read,
	.proc_lseek = seq_lseek,
	.proc_release = seq_release,
	};

	static const struct proc_ops ipx_seq_route_fops = {
	.proc_open = ipx_seq_route_open,
	.proc_read = seq_read,
	.proc_lseek = seq_lseek,
	.proc_release = seq_release,
	};

	static const struct proc_ops ipx_seq_socket_fops = {
	.proc_open = ipx_seq_socket_open,
	.proc_read = seq_read,
	.proc_lseek = seq_lseek,
	.proc_release = seq_release,
	};
	#endif

	static struct proc_dir_entry *ipx_proc_dir;

	int __init ipx_proc_init(void)
	{
	struct proc_dir_entry *p;
	int rc = -ENOMEM;

	ipx_proc_dir = proc_mkdir("ipx", init_net.proc_net);

	if (!ipx_proc_dir)
	goto out;
	p = proc_create("interface", S_IRUGO,
	ipx_proc_dir, &ipx_seq_interface_fops);
	if (!p)
	goto out_interface;

	p = proc_create("route", S_IRUGO, ipx_proc_dir, &ipx_seq_route_fops);
	if (!p)
	goto out_route;

	p = proc_create("socket", S_IRUGO, ipx_proc_dir, &ipx_seq_socket_fops);
	if (!p)
	goto out_socket;

	rc = 0;
	out:
	return rc;
	out_socket:
	remove_proc_entry("route", ipx_proc_dir);
	out_route:
	remove_proc_entry("interface", ipx_proc_dir);
	out_interface:
	remove_proc_entry("ipx", init_net.proc_net);
	goto out;
	}

	void __exit ipx_proc_exit(void)
	{
	remove_proc_entry("interface", ipx_proc_dir);
	remove_proc_entry("route", ipx_proc_dir);
	remove_proc_entry("socket", ipx_proc_dir);
	remove_proc_entry("ipx", init_net.proc_net);
	}

	#else /* CONFIG_PROC_FS */

	int __init ipx_proc_init(void)
	{
	return 0;
	}

	void __exit ipx_proc_exit(void)
	{
	}

	#endif /* CONFIG_PROC_FS */