1 /* 2 * X.25 Packet Layer release 002 3 * 4 * This is ALPHA test software. This code may break your machine, 5 * randomly fail to work with new releases, misbehave and/or generally 6 * screw up. It might even work. 7 * 8 * This code REQUIRES 2.4 with seq_file support 9 * 10 * This module: 11 * This module is free software; you can redistribute it and/or 12 * modify it under the terms of the GNU General Public License 13 * as published by the Free Software Foundation; either version 14 * 2 of the License, or (at your option) any later version. 15 * 16 * History 17 * 2002/10/06 Arnaldo Carvalho de Melo seq_file support 18 */ 19 20 #include <linux/init.h> 21 #include <linux/proc_fs.h> 22 #include <linux/seq_file.h> 23 #include <linux/export.h> 24 #include <net/net_namespace.h> 25 #include <net/sock.h> 26 #include <net/x25.h> 27 28 #ifdef CONFIG_PROC_FS 29 30 static void *x25_seq_route_start(struct seq_file *seq, loff_t *pos) 31 __acquires(x25_route_list_lock) 32 { 33 read_lock_bh(&x25_route_list_lock); 34 return seq_list_start_head(&x25_route_list, *pos); 35 } 36 37 static void *x25_seq_route_next(struct seq_file *seq, void *v, loff_t *pos) 38 { 39 return seq_list_next(v, &x25_route_list, pos); 40 } 41 42 static void x25_seq_route_stop(struct seq_file *seq, void *v) 43 __releases(x25_route_list_lock) 44 { 45 read_unlock_bh(&x25_route_list_lock); 46 } 47 48 static int x25_seq_route_show(struct seq_file *seq, void *v) 49 { 50 struct x25_route *rt = list_entry(v, struct x25_route, node); 51 52 if (v == &x25_route_list) { 53 seq_puts(seq, "Address Digits Device\n"); 54 goto out; 55 } 56 57 rt = v; 58 seq_printf(seq, "%-15s %-6d %-5s\n", 59 rt->address.x25_addr, rt->sigdigits, 60 rt->dev ? rt->dev->name : "???"); 61 out: 62 return 0; 63 } 64 65 static void *x25_seq_socket_start(struct seq_file *seq, loff_t *pos) 66 __acquires(x25_list_lock) 67 { 68 read_lock_bh(&x25_list_lock); 69 return seq_hlist_start_head(&x25_list, *pos); 70 } 71 72 static void *x25_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos) 73 { 74 return seq_hlist_next(v, &x25_list, pos); 75 } 76 77 static void x25_seq_socket_stop(struct seq_file *seq, void *v) 78 __releases(x25_list_lock) 79 { 80 read_unlock_bh(&x25_list_lock); 81 } 82 83 static int x25_seq_socket_show(struct seq_file *seq, void *v) 84 { 85 struct sock *s; 86 struct x25_sock *x25; 87 struct net_device *dev; 88 const char *devname; 89 90 if (v == SEQ_START_TOKEN) { 91 seq_printf(seq, "dest_addr src_addr dev lci st vs vr " 92 "va t t2 t21 t22 t23 Snd-Q Rcv-Q inode\n"); 93 goto out; 94 } 95 96 s = sk_entry(v); 97 x25 = x25_sk(s); 98 99 if (!x25->neighbour || (dev = x25->neighbour->dev) == NULL) 100 devname = "???"; 101 else 102 devname = x25->neighbour->dev->name; 103 104 seq_printf(seq, "%-10s %-10s %-5s %3.3X %d %d %d %d %3lu %3lu " 105 "%3lu %3lu %3lu %5d %5d %ld\n", 106 !x25->dest_addr.x25_addr[0] ? "*" : x25->dest_addr.x25_addr, 107 !x25->source_addr.x25_addr[0] ? "*" : x25->source_addr.x25_addr, 108 devname, x25->lci & 0x0FFF, x25->state, x25->vs, x25->vr, 109 x25->va, x25_display_timer(s) / HZ, x25->t2 / HZ, 110 x25->t21 / HZ, x25->t22 / HZ, x25->t23 / HZ, 111 sk_wmem_alloc_get(s), 112 sk_rmem_alloc_get(s), 113 s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L); 114 out: 115 return 0; 116 } 117 118 static void *x25_seq_forward_start(struct seq_file *seq, loff_t *pos) 119 __acquires(x25_forward_list_lock) 120 { 121 read_lock_bh(&x25_forward_list_lock); 122 return seq_list_start_head(&x25_forward_list, *pos); 123 } 124 125 static void *x25_seq_forward_next(struct seq_file *seq, void *v, loff_t *pos) 126 { 127 return seq_list_next(v, &x25_forward_list, pos); 128 } 129 130 static void x25_seq_forward_stop(struct seq_file *seq, void *v) 131 __releases(x25_forward_list_lock) 132 { 133 read_unlock_bh(&x25_forward_list_lock); 134 } 135 136 static int x25_seq_forward_show(struct seq_file *seq, void *v) 137 { 138 struct x25_forward *f = list_entry(v, struct x25_forward, node); 139 140 if (v == &x25_forward_list) { 141 seq_printf(seq, "lci dev1 dev2\n"); 142 goto out; 143 } 144 145 f = v; 146 147 seq_printf(seq, "%d %-10s %-10s\n", 148 f->lci, f->dev1->name, f->dev2->name); 149 out: 150 return 0; 151 } 152 153 static const struct seq_operations x25_seq_route_ops = { 154 .start = x25_seq_route_start, 155 .next = x25_seq_route_next, 156 .stop = x25_seq_route_stop, 157 .show = x25_seq_route_show, 158 }; 159 160 static const struct seq_operations x25_seq_socket_ops = { 161 .start = x25_seq_socket_start, 162 .next = x25_seq_socket_next, 163 .stop = x25_seq_socket_stop, 164 .show = x25_seq_socket_show, 165 }; 166 167 static const struct seq_operations x25_seq_forward_ops = { 168 .start = x25_seq_forward_start, 169 .next = x25_seq_forward_next, 170 .stop = x25_seq_forward_stop, 171 .show = x25_seq_forward_show, 172 }; 173 174 int __init x25_proc_init(void) 175 { 176 if (!proc_mkdir("x25", init_net.proc_net)) 177 return -ENOMEM; 178 179 if (!proc_create_seq("x25/route", 0444, init_net.proc_net, 180 &x25_seq_route_ops)) 181 goto out; 182 183 if (!proc_create_seq("x25/socket", 0444, init_net.proc_net, 184 &x25_seq_socket_ops)) 185 goto out; 186 187 if (!proc_create_seq("x25/forward", 0444, init_net.proc_net, 188 &x25_seq_forward_ops)) 189 goto out; 190 return 0; 191 192 out: 193 remove_proc_subtree("x25", init_net.proc_net); 194 return -ENOMEM; 195 } 196 197 void __exit x25_proc_exit(void) 198 { 199 remove_proc_subtree("x25", init_net.proc_net); 200 } 201 202 #else /* CONFIG_PROC_FS */ 203 204 int __init x25_proc_init(void) 205 { 206 return 0; 207 } 208 209 void __exit x25_proc_exit(void) 210 { 211 } 212 #endif /* CONFIG_PROC_FS */ 213