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 <net/net_namespace.h> 24 #include <net/sock.h> 25 #include <net/x25.h> 26 27 #ifdef CONFIG_PROC_FS 28 29 static void *x25_seq_route_start(struct seq_file *seq, loff_t *pos) 30 __acquires(x25_route_list_lock) 31 { 32 read_lock_bh(&x25_route_list_lock); 33 return seq_list_start_head(&x25_route_list, *pos); 34 } 35 36 static void *x25_seq_route_next(struct seq_file *seq, void *v, loff_t *pos) 37 { 38 return seq_list_next(v, &x25_route_list, pos); 39 } 40 41 static void x25_seq_route_stop(struct seq_file *seq, void *v) 42 __releases(x25_route_list_lock) 43 { 44 read_unlock_bh(&x25_route_list_lock); 45 } 46 47 static int x25_seq_route_show(struct seq_file *seq, void *v) 48 { 49 struct x25_route *rt = list_entry(v, struct x25_route, node); 50 51 if (v == &x25_route_list) { 52 seq_puts(seq, "Address Digits Device\n"); 53 goto out; 54 } 55 56 rt = v; 57 seq_printf(seq, "%-15s %-6d %-5s\n", 58 rt->address.x25_addr, rt->sigdigits, 59 rt->dev ? rt->dev->name : "???"); 60 out: 61 return 0; 62 } 63 64 static void *x25_seq_socket_start(struct seq_file *seq, loff_t *pos) 65 __acquires(x25_list_lock) 66 { 67 read_lock_bh(&x25_list_lock); 68 return seq_hlist_start_head(&x25_list, *pos); 69 } 70 71 static void *x25_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos) 72 { 73 return seq_hlist_next(v, &x25_list, pos); 74 } 75 76 static void x25_seq_socket_stop(struct seq_file *seq, void *v) 77 __releases(x25_list_lock) 78 { 79 read_unlock_bh(&x25_list_lock); 80 } 81 82 static int x25_seq_socket_show(struct seq_file *seq, void *v) 83 { 84 struct sock *s; 85 struct x25_sock *x25; 86 struct net_device *dev; 87 const char *devname; 88 89 if (v == SEQ_START_TOKEN) { 90 seq_printf(seq, "dest_addr src_addr dev lci st vs vr " 91 "va t t2 t21 t22 t23 Snd-Q Rcv-Q inode\n"); 92 goto out; 93 } 94 95 s = sk_entry(v); 96 x25 = x25_sk(s); 97 98 if (!x25->neighbour || (dev = x25->neighbour->dev) == NULL) 99 devname = "???"; 100 else 101 devname = x25->neighbour->dev->name; 102 103 seq_printf(seq, "%-10s %-10s %-5s %3.3X %d %d %d %d %3lu %3lu " 104 "%3lu %3lu %3lu %5d %5d %ld\n", 105 !x25->dest_addr.x25_addr[0] ? "*" : x25->dest_addr.x25_addr, 106 !x25->source_addr.x25_addr[0] ? "*" : x25->source_addr.x25_addr, 107 devname, x25->lci & 0x0FFF, x25->state, x25->vs, x25->vr, 108 x25->va, x25_display_timer(s) / HZ, x25->t2 / HZ, 109 x25->t21 / HZ, x25->t22 / HZ, x25->t23 / HZ, 110 sk_wmem_alloc_get(s), 111 sk_rmem_alloc_get(s), 112 s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L); 113 out: 114 return 0; 115 } 116 117 static void *x25_seq_forward_start(struct seq_file *seq, loff_t *pos) 118 __acquires(x25_forward_list_lock) 119 { 120 read_lock_bh(&x25_forward_list_lock); 121 return seq_list_start_head(&x25_forward_list, *pos); 122 } 123 124 static void *x25_seq_forward_next(struct seq_file *seq, void *v, loff_t *pos) 125 { 126 return seq_list_next(v, &x25_forward_list, pos); 127 } 128 129 static void x25_seq_forward_stop(struct seq_file *seq, void *v) 130 __releases(x25_forward_list_lock) 131 { 132 read_unlock_bh(&x25_forward_list_lock); 133 } 134 135 static int x25_seq_forward_show(struct seq_file *seq, void *v) 136 { 137 struct x25_forward *f = list_entry(v, struct x25_forward, node); 138 139 if (v == &x25_forward_list) { 140 seq_printf(seq, "lci dev1 dev2\n"); 141 goto out; 142 } 143 144 f = v; 145 146 seq_printf(seq, "%d %-10s %-10s\n", 147 f->lci, f->dev1->name, f->dev2->name); 148 out: 149 return 0; 150 } 151 152 static const struct seq_operations x25_seq_route_ops = { 153 .start = x25_seq_route_start, 154 .next = x25_seq_route_next, 155 .stop = x25_seq_route_stop, 156 .show = x25_seq_route_show, 157 }; 158 159 static const struct seq_operations x25_seq_socket_ops = { 160 .start = x25_seq_socket_start, 161 .next = x25_seq_socket_next, 162 .stop = x25_seq_socket_stop, 163 .show = x25_seq_socket_show, 164 }; 165 166 static const struct seq_operations x25_seq_forward_ops = { 167 .start = x25_seq_forward_start, 168 .next = x25_seq_forward_next, 169 .stop = x25_seq_forward_stop, 170 .show = x25_seq_forward_show, 171 }; 172 173 static int x25_seq_socket_open(struct inode *inode, struct file *file) 174 { 175 return seq_open(file, &x25_seq_socket_ops); 176 } 177 178 static int x25_seq_route_open(struct inode *inode, struct file *file) 179 { 180 return seq_open(file, &x25_seq_route_ops); 181 } 182 183 static int x25_seq_forward_open(struct inode *inode, struct file *file) 184 { 185 return seq_open(file, &x25_seq_forward_ops); 186 } 187 188 static const struct file_operations x25_seq_socket_fops = { 189 .owner = THIS_MODULE, 190 .open = x25_seq_socket_open, 191 .read = seq_read, 192 .llseek = seq_lseek, 193 .release = seq_release, 194 }; 195 196 static const struct file_operations x25_seq_route_fops = { 197 .owner = THIS_MODULE, 198 .open = x25_seq_route_open, 199 .read = seq_read, 200 .llseek = seq_lseek, 201 .release = seq_release, 202 }; 203 204 static const struct file_operations x25_seq_forward_fops = { 205 .owner = THIS_MODULE, 206 .open = x25_seq_forward_open, 207 .read = seq_read, 208 .llseek = seq_lseek, 209 .release = seq_release, 210 }; 211 212 static struct proc_dir_entry *x25_proc_dir; 213 214 int __init x25_proc_init(void) 215 { 216 struct proc_dir_entry *p; 217 int rc = -ENOMEM; 218 219 x25_proc_dir = proc_mkdir("x25", init_net.proc_net); 220 if (!x25_proc_dir) 221 goto out; 222 223 p = proc_create("route", S_IRUGO, x25_proc_dir, &x25_seq_route_fops); 224 if (!p) 225 goto out_route; 226 227 p = proc_create("socket", S_IRUGO, x25_proc_dir, &x25_seq_socket_fops); 228 if (!p) 229 goto out_socket; 230 231 p = proc_create("forward", S_IRUGO, x25_proc_dir, 232 &x25_seq_forward_fops); 233 if (!p) 234 goto out_forward; 235 rc = 0; 236 237 out: 238 return rc; 239 out_forward: 240 remove_proc_entry("socket", x25_proc_dir); 241 out_socket: 242 remove_proc_entry("route", x25_proc_dir); 243 out_route: 244 remove_proc_entry("x25", init_net.proc_net); 245 goto out; 246 } 247 248 void __exit x25_proc_exit(void) 249 { 250 remove_proc_entry("forward", x25_proc_dir); 251 remove_proc_entry("route", x25_proc_dir); 252 remove_proc_entry("socket", x25_proc_dir); 253 remove_proc_entry("x25", init_net.proc_net); 254 } 255 256 #else /* CONFIG_PROC_FS */ 257 258 int __init x25_proc_init(void) 259 { 260 return 0; 261 } 262 263 void __exit x25_proc_exit(void) 264 { 265 } 266 #endif /* CONFIG_PROC_FS */ 267