1 files changed, 321 insertions, 0 deletions

diff --git a/net/appletalk/atalk_proc.c b/net/appletalk/atalk_proc.c
new file mode 100644
index 000000000000..dc4048dd98c1
--- /dev/null
+++ b/net/appletalk/atalk_proc.c
@@ -0,0 +1,321 @@
+/*
+ *      atalk_proc.c - proc support for Appletalk
+ *
+ *      Copyright(c) Arnaldo Carvalho de Melo <acme@conectiva.com.br>
+ *
+ *      This program 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, version 2.
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <net/sock.h>
+#include <linux/atalk.h>
+
+
+static __inline__ struct atalk_iface *atalk_get_interface_idx(loff_t pos)
+{
+        struct atalk_iface *i;
+
+        for (i = atalk_interfaces; pos && i; i = i->next)
+                --pos;
+
+        return i;
+}
+
+static void *atalk_seq_interface_start(struct seq_file *seq, loff_t *pos)
+{
+        loff_t l = *pos;
+
+        read_lock_bh(&atalk_interfaces_lock);
+        return l ? atalk_get_interface_idx(--l) : SEQ_START_TOKEN;
+}
+
+static void *atalk_seq_interface_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+        struct atalk_iface *i;
+
+        ++*pos;
+        if (v == SEQ_START_TOKEN) {
+                i = NULL;
+                if (atalk_interfaces)
+                        i = atalk_interfaces;
+                goto out;
+        }
+        i = v;
+        i = i->next;
+out:
+        return i;
+}
+
+static void atalk_seq_interface_stop(struct seq_file *seq, void *v)
+{
+        read_unlock_bh(&atalk_interfaces_lock);
+}
+
+static int atalk_seq_interface_show(struct seq_file *seq, void *v)
+{
+        struct atalk_iface *iface;
+
+        if (v == SEQ_START_TOKEN) {
+                seq_puts(seq, "Interface        Address   Networks  "
+                              "Status\n");
+                goto out;
+        }
+
+        iface = v;
+        seq_printf(seq, "%-16s %04X:%02X  %04X-%04X  %d\n",
+                   iface->dev->name, ntohs(iface->address.s_net),
+                   iface->address.s_node, ntohs(iface->nets.nr_firstnet),
+                   ntohs(iface->nets.nr_lastnet), iface->status);
+out:
+        return 0;
+}
+
+static __inline__ struct atalk_route *atalk_get_route_idx(loff_t pos)
+{
+        struct atalk_route *r;
+
+        for (r = atalk_routes; pos && r; r = r->next)
+                --pos;
+
+        return r;
+}
+
+static void *atalk_seq_route_start(struct seq_file *seq, loff_t *pos)
+{
+        loff_t l = *pos;
+
+        read_lock_bh(&atalk_routes_lock);
+        return l ? atalk_get_route_idx(--l) : SEQ_START_TOKEN;
+}
+
+static void *atalk_seq_route_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+        struct atalk_route *r;
+
+        ++*pos;
+        if (v == SEQ_START_TOKEN) {
+                r = NULL;
+                if (atalk_routes)
+                        r = atalk_routes;
+                goto out;
+        }
+        r = v;
+        r = r->next;
+out:
+        return r;
+}
+
+static void atalk_seq_route_stop(struct seq_file *seq, void *v)
+{
+        read_unlock_bh(&atalk_routes_lock);
+}
+
+static int atalk_seq_route_show(struct seq_file *seq, void *v)
+{
+        struct atalk_route *rt;
+
+        if (v == SEQ_START_TOKEN) {
+                seq_puts(seq, "Target        Router  Flags Dev\n");
+                goto out;
+        }
+
+        if (atrtr_default.dev) {
+                rt = &atrtr_default;
+                seq_printf(seq, "Default     %04X:%02X  %-4d  %s\n",
+                               ntohs(rt->gateway.s_net), rt->gateway.s_node,
+                               rt->flags, rt->dev->name);
+        }
+
+        rt = v;
+        seq_printf(seq, "%04X:%02X     %04X:%02X  %-4d  %s\n",
+                   ntohs(rt->target.s_net), rt->target.s_node,
+                   ntohs(rt->gateway.s_net), rt->gateway.s_node,
+                   rt->flags, rt->dev->name);
+out:
+        return 0;
+}
+
+static __inline__ struct sock *atalk_get_socket_idx(loff_t pos)
+{
+        struct sock *s;
+        struct hlist_node *node;
+
+        sk_for_each(s, node, &atalk_sockets)
+                if (!pos--)
+                        goto found;
+        s = NULL;
+found:
+        return s;
+}
+
+static void *atalk_seq_socket_start(struct seq_file *seq, loff_t *pos)
+{
+        loff_t l = *pos;
+
+        read_lock_bh(&atalk_sockets_lock);
+        return l ? atalk_get_socket_idx(--l) : SEQ_START_TOKEN;
+}
+
+static void *atalk_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+        struct sock *i;
+
+        ++*pos;
+        if (v == SEQ_START_TOKEN) {
+                i = sk_head(&atalk_sockets);
+                goto out;
+        }
+        i = sk_next(v);
+out:
+        return i;
+}
+
+static void atalk_seq_socket_stop(struct seq_file *seq, void *v)
+{
+        read_unlock_bh(&atalk_sockets_lock);
+}
+
+static int atalk_seq_socket_show(struct seq_file *seq, void *v)
+{
+        struct sock *s;
+        struct atalk_sock *at;
+
+        if (v == SEQ_START_TOKEN) {
+                seq_printf(seq, "Type Local_addr  Remote_addr Tx_queue "
+                                "Rx_queue St UID\n");
+                goto out;
+        }
+
+        s = v;
+        at = at_sk(s);
+
+        seq_printf(seq, "%02X   %04X:%02X:%02X  %04X:%02X:%02X  %08X:%08X "
+                        "%02X %d\n",
+                   s->sk_type, ntohs(at->src_net), at->src_node, at->src_port,
+                   ntohs(at->dest_net), at->dest_node, at->dest_port,
+                   atomic_read(&s->sk_wmem_alloc),
+                   atomic_read(&s->sk_rmem_alloc),
+                   s->sk_state, SOCK_INODE(s->sk_socket)->i_uid);
+out:
+        return 0;
+}
+
+static struct seq_operations atalk_seq_interface_ops = {
+        .start  = atalk_seq_interface_start,
+        .next   = atalk_seq_interface_next,
+        .stop   = atalk_seq_interface_stop,
+        .show   = atalk_seq_interface_show,
+};
+
+static struct seq_operations atalk_seq_route_ops = {
+        .start  = atalk_seq_route_start,
+        .next   = atalk_seq_route_next,
+        .stop   = atalk_seq_route_stop,
+        .show   = atalk_seq_route_show,
+};
+
+static struct seq_operations atalk_seq_socket_ops = {
+        .start  = atalk_seq_socket_start,
+        .next   = atalk_seq_socket_next,
+        .stop   = atalk_seq_socket_stop,
+        .show   = atalk_seq_socket_show,
+};
+
+static int atalk_seq_interface_open(struct inode *inode, struct file *file)
+{
+        return seq_open(file, &atalk_seq_interface_ops);
+}
+
+static int atalk_seq_route_open(struct inode *inode, struct file *file)
+{
+        return seq_open(file, &atalk_seq_route_ops);
+}
+
+static int atalk_seq_socket_open(struct inode *inode, struct file *file)
+{
+        return seq_open(file, &atalk_seq_socket_ops);
+}
+
+static struct file_operations atalk_seq_interface_fops = {
+        .owner          = THIS_MODULE,
+        .open           = atalk_seq_interface_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = seq_release,
+};
+
+static struct file_operations atalk_seq_route_fops = {
+        .owner          = THIS_MODULE,
+        .open           = atalk_seq_route_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = seq_release,
+};
+
+static struct file_operations atalk_seq_socket_fops = {
+        .owner          = THIS_MODULE,
+        .open           = atalk_seq_socket_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = seq_release,
+};
+
+static struct proc_dir_entry *atalk_proc_dir;
+
+int __init atalk_proc_init(void)
+{
+        struct proc_dir_entry *p;
+        int rc = -ENOMEM;
+
+        atalk_proc_dir = proc_mkdir("atalk", proc_net);
+        if (!atalk_proc_dir)
+                goto out;
+        atalk_proc_dir->owner = THIS_MODULE;
+
+        p = create_proc_entry("interface", S_IRUGO, atalk_proc_dir);
+        if (!p)
+                goto out_interface;
+        p->proc_fops = &atalk_seq_interface_fops;
+
+        p = create_proc_entry("route", S_IRUGO, atalk_proc_dir);
+        if (!p)
+                goto out_route;
+        p->proc_fops = &atalk_seq_route_fops;
+
+        p = create_proc_entry("socket", S_IRUGO, atalk_proc_dir);
+        if (!p)
+                goto out_socket;
+        p->proc_fops = &atalk_seq_socket_fops;
+
+        p = create_proc_entry("arp", S_IRUGO, atalk_proc_dir);
+        if (!p) 
+                goto out_arp;
+        p->proc_fops = &atalk_seq_arp_fops;
+
+        rc = 0;
+out:
+        return rc;
+out_arp:
+        remove_proc_entry("socket", atalk_proc_dir);
+out_socket:
+        remove_proc_entry("route", atalk_proc_dir);
+out_route:
+        remove_proc_entry("interface", atalk_proc_dir);
+out_interface:
+        remove_proc_entry("atalk", proc_net);
+        goto out;
+}
+
+void __exit atalk_proc_exit(void)
+{
+        remove_proc_entry("interface", atalk_proc_dir);
+        remove_proc_entry("route", atalk_proc_dir);
+        remove_proc_entry("socket", atalk_proc_dir);
+        remove_proc_entry("arp", atalk_proc_dir);
+        remove_proc_entry("atalk", proc_net);
+}