/* * 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/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) { 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) { 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) { 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) { 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 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 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 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 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 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 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", 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; rc = 0; out: return rc; out_socket: remove_proc_entry("route", x25_proc_dir); out_route: remove_proc_entry("x25", proc_net); goto out; } void __exit x25_proc_exit(void) { remove_proc_entry("route", x25_proc_dir); remove_proc_entry("socket", x25_proc_dir); remove_proc_entry("x25", proc_net); } #else /* CONFIG_PROC_FS */ int __init x25_proc_init(void) { return 0; } void __exit x25_proc_exit(void) { } #endif /* CONFIG_PROC_FS */