net/ipx/ipx_proc.c

   1 /*
   2  *      IPX proc routines
   3  *
   4  *      Copyright(C) Arnaldo Carvalho de Melo <acme@conectiva.com.br>, 2002
   5  */
   6
   7 #include <linux/init.h>
   8 #ifdef CONFIG_PROC_FS
   9 #include <linux/proc_fs.h>
  10 #include <linux/spinlock.h>
  11 #include <linux/seq_file.h>
  12 #include <linux/export.h>
  13 #include <net/net_namespace.h>
  14 #include <net/tcp_states.h>
  15 #include <net/ipx.h>
  16
  17 static void *ipx_seq_interface_start(struct seq_file *seq, loff_t *pos)
  18 {
  19         spin_lock_bh(&ipx_interfaces_lock);
  20         return seq_list_start_head(&ipx_interfaces, *pos);
  21 }
  22
  23 static void *ipx_seq_interface_next(struct seq_file *seq, void *v, loff_t *pos)
  24 {
  25         return seq_list_next(v, &ipx_interfaces, pos);
  26 }
  27
  28 static void ipx_seq_interface_stop(struct seq_file *seq, void *v)
  29 {
  30         spin_unlock_bh(&ipx_interfaces_lock);
  31 }
  32
  33 static int ipx_seq_interface_show(struct seq_file *seq, void *v)
  34 {
  35         struct ipx_interface *i;
  36
  37         if (v == &ipx_interfaces) {
  38                 seq_puts(seq, "Network    Node_Address   Primary  Device     "
  39                               "Frame_Type");
  40 #ifdef IPX_REFCNT_DEBUG
  41                 seq_puts(seq, "  refcnt");
  42 #endif
  43                 seq_puts(seq, "\n");
  44                 goto out;
  45         }
  46
  47         i = list_entry(v, struct ipx_interface, node);
  48         seq_printf(seq, "%08X   ", ntohl(i->if_netnum));
  49         seq_printf(seq, "%02X%02X%02X%02X%02X%02X   ",
  50                         i->if_node[0], i->if_node[1], i->if_node[2],
  51                         i->if_node[3], i->if_node[4], i->if_node[5]);
  52         seq_printf(seq, "%-9s", i == ipx_primary_net ? "Yes" : "No");
  53         seq_printf(seq, "%-11s", ipx_device_name(i));
  54         seq_printf(seq, "%-9s", ipx_frame_name(i->if_dlink_type));
  55 #ifdef IPX_REFCNT_DEBUG
  56         seq_printf(seq, "%6d", atomic_read(&i->refcnt));
  57 #endif
  58         seq_puts(seq, "\n");
  59 out:
  60         return 0;
  61 }
  62
  63 static void *ipx_seq_route_start(struct seq_file *seq, loff_t *pos)
  64 {
  65         read_lock_bh(&ipx_routes_lock);
  66         return seq_list_start_head(&ipx_routes, *pos);
  67 }
  68
  69 static void *ipx_seq_route_next(struct seq_file *seq, void *v, loff_t *pos)
  70 {
  71         return seq_list_next(v, &ipx_routes, pos);
  72 }
  73
  74 static void ipx_seq_route_stop(struct seq_file *seq, void *v)
  75 {
  76         read_unlock_bh(&ipx_routes_lock);
  77 }
  78
  79 static int ipx_seq_route_show(struct seq_file *seq, void *v)
  80 {
  81         struct ipx_route *rt;
  82
  83         if (v == &ipx_routes) {
  84                 seq_puts(seq, "Network    Router_Net   Router_Node\n");
  85                 goto out;
  86         }
  87
  88         rt = list_entry(v, struct ipx_route, node);
  89
  90         seq_printf(seq, "%08X   ", ntohl(rt->ir_net));
  91         if (rt->ir_routed)
  92                 seq_printf(seq, "%08X     %02X%02X%02X%02X%02X%02X\n",
  93                            ntohl(rt->ir_intrfc->if_netnum),
  94                            rt->ir_router_node[0], rt->ir_router_node[1],
  95                            rt->ir_router_node[2], rt->ir_router_node[3],
  96                            rt->ir_router_node[4], rt->ir_router_node[5]);
  97         else
  98                 seq_puts(seq, "Directly     Connected\n");
  99 out:
 100         return 0;
 101 }
 102
 103 static __inline__ struct sock *ipx_get_socket_idx(loff_t pos)
 104 {
 105         struct sock *s = NULL;
 106         struct ipx_interface *i;
 107
 108         list_for_each_entry(i, &ipx_interfaces, node) {
 109                 spin_lock_bh(&i->if_sklist_lock);
 110                 sk_for_each(s, &i->if_sklist) {
 111                         if (!pos)
 112                                 break;
 113                         --pos;
 114                 }
 115                 spin_unlock_bh(&i->if_sklist_lock);
 116                 if (!pos) {
 117                         if (s)
 118                                 goto found;
 119                         break;
 120                 }
 121         }
 122         s = NULL;
 123 found:
 124         return s;
 125 }
 126
 127 static void *ipx_seq_socket_start(struct seq_file *seq, loff_t *pos)
 128 {
 129         loff_t l = *pos;
 130
 131         spin_lock_bh(&ipx_interfaces_lock);
 132         return l ? ipx_get_socket_idx(--l) : SEQ_START_TOKEN;
 133 }
 134
 135 static void *ipx_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos)
 136 {
 137         struct sock* sk, *next;
 138         struct ipx_interface *i;
 139         struct ipx_sock *ipxs;
 140
 141         ++*pos;
 142         if (v == SEQ_START_TOKEN) {
 143                 sk = NULL;
 144                 i = ipx_interfaces_head();
 145                 if (!i)
 146                         goto out;
 147                 sk = sk_head(&i->if_sklist);
 148                 if (sk)
 149                         spin_lock_bh(&i->if_sklist_lock);
 150                 goto out;
 151         }
 152         sk = v;
 153         next = sk_next(sk);
 154         if (next) {
 155                 sk = next;
 156                 goto out;
 157         }
 158         ipxs = ipx_sk(sk);
 159         i = ipxs->intrfc;
 160         spin_unlock_bh(&i->if_sklist_lock);
 161         sk = NULL;
 162         for (;;) {
 163                 if (i->node.next == &ipx_interfaces)
 164                         break;
 165                 i = list_entry(i->node.next, struct ipx_interface, node);
 166                 spin_lock_bh(&i->if_sklist_lock);
 167                 if (!hlist_empty(&i->if_sklist)) {
 168                         sk = sk_head(&i->if_sklist);
 169                         break;
 170                 }
 171                 spin_unlock_bh(&i->if_sklist_lock);
 172         }
 173 out:
 174         return sk;
 175 }
 176
 177 static int ipx_seq_socket_show(struct seq_file *seq, void *v)
 178 {
 179         struct sock *s;
 180         struct ipx_sock *ipxs;
 181
 182         if (v == SEQ_START_TOKEN) {
 183 #ifdef CONFIG_IPX_INTERN
 184                 seq_puts(seq, "Local_Address               "
 185                               "Remote_Address              Tx_Queue  "
 186                               "Rx_Queue  State  Uid\n");
 187 #else
 188                 seq_puts(seq, "Local_Address  Remote_Address              "
 189                               "Tx_Queue  Rx_Queue  State  Uid\n");
 190 #endif
 191                 goto out;
 192         }
 193
 194         s = v;
 195         ipxs = ipx_sk(s);
 196 #ifdef CONFIG_IPX_INTERN
 197         seq_printf(seq, "%08X:%02X%02X%02X%02X%02X%02X:%04X  ",
 198                    ntohl(ipxs->intrfc->if_netnum),
 199                    ipxs->node[0], ipxs->node[1], ipxs->node[2], ipxs->node[3],
 200                    ipxs->node[4], ipxs->node[5], ntohs(ipxs->port));
 201 #else
 202         seq_printf(seq, "%08X:%04X  ", ntohl(ipxs->intrfc->if_netnum),
 203                    ntohs(ipxs->port));
 204 #endif  /* CONFIG_IPX_INTERN */
 205         if (s->sk_state != TCP_ESTABLISHED)
 206                 seq_printf(seq, "%-28s", "Not_Connected");
 207         else {
 208                 seq_printf(seq, "%08X:%02X%02X%02X%02X%02X%02X:%04X  ",
 209                            ntohl(ipxs->dest_addr.net),
 210                            ipxs->dest_addr.node[0], ipxs->dest_addr.node[1],
 211                            ipxs->dest_addr.node[2], ipxs->dest_addr.node[3],
 212                            ipxs->dest_addr.node[4], ipxs->dest_addr.node[5],
 213                            ntohs(ipxs->dest_addr.sock));
 214         }
 215
 216         seq_printf(seq, "%08X  %08X  %02X     %03u\n",
 217                    sk_wmem_alloc_get(s),
 218                    sk_rmem_alloc_get(s),
 219                    s->sk_state,
 220                    from_kuid_munged(seq_user_ns(seq), sock_i_uid(s)));
 221 out:
 222         return 0;
 223 }
 224
 225 static const struct seq_operations ipx_seq_interface_ops = {
 226         .start  = ipx_seq_interface_start,
 227         .next   = ipx_seq_interface_next,
 228         .stop   = ipx_seq_interface_stop,
 229         .show   = ipx_seq_interface_show,
 230 };
 231
 232 static const struct seq_operations ipx_seq_route_ops = {
 233         .start  = ipx_seq_route_start,
 234         .next   = ipx_seq_route_next,
 235         .stop   = ipx_seq_route_stop,
 236         .show   = ipx_seq_route_show,
 237 };
 238
 239 static const struct seq_operations ipx_seq_socket_ops = {
 240         .start  = ipx_seq_socket_start,
 241         .next   = ipx_seq_socket_next,
 242         .stop   = ipx_seq_interface_stop,
 243         .show   = ipx_seq_socket_show,
 244 };
 245
 246 static int ipx_seq_route_open(struct inode *inode, struct file *file)
 247 {
 248         return seq_open(file, &ipx_seq_route_ops);
 249 }
 250
 251 static int ipx_seq_interface_open(struct inode *inode, struct file *file)
 252 {
 253         return seq_open(file, &ipx_seq_interface_ops);
 254 }
 255
 256 static int ipx_seq_socket_open(struct inode *inode, struct file *file)
 257 {
 258         return seq_open(file, &ipx_seq_socket_ops);
 259 }
 260
 261 static const struct file_operations ipx_seq_interface_fops = {
 262         .owner          = THIS_MODULE,
 263         .open           = ipx_seq_interface_open,
 264         .read           = seq_read,
 265         .llseek         = seq_lseek,
 266         .release        = seq_release,
 267 };
 268
 269 static const struct file_operations ipx_seq_route_fops = {
 270         .owner          = THIS_MODULE,
 271         .open           = ipx_seq_route_open,
 272         .read           = seq_read,
 273         .llseek         = seq_lseek,
 274         .release        = seq_release,
 275 };
 276
 277 static const struct file_operations ipx_seq_socket_fops = {
 278         .owner          = THIS_MODULE,
 279         .open           = ipx_seq_socket_open,
 280         .read           = seq_read,
 281         .llseek         = seq_lseek,
 282         .release        = seq_release,
 283 };
 284
 285 static struct proc_dir_entry *ipx_proc_dir;
 286
 287 int __init ipx_proc_init(void)
 288 {
 289         struct proc_dir_entry *p;
 290         int rc = -ENOMEM;
 291
 292         ipx_proc_dir = proc_mkdir("ipx", init_net.proc_net);
 293
 294         if (!ipx_proc_dir)
 295                 goto out;
 296         p = proc_create("interface", S_IRUGO,
 297                         ipx_proc_dir, &ipx_seq_interface_fops);
 298         if (!p)
 299                 goto out_interface;
 300
 301         p = proc_create("route", S_IRUGO, ipx_proc_dir, &ipx_seq_route_fops);
 302         if (!p)
 303                 goto out_route;
 304
 305         p = proc_create("socket", S_IRUGO, ipx_proc_dir, &ipx_seq_socket_fops);
 306         if (!p)
 307                 goto out_socket;
 308
 309         rc = 0;
 310 out:
 311         return rc;
 312 out_socket:
 313         remove_proc_entry("route", ipx_proc_dir);
 314 out_route:
 315         remove_proc_entry("interface", ipx_proc_dir);
 316 out_interface:
 317         remove_proc_entry("ipx", init_net.proc_net);
 318         goto out;
 319 }
 320
 321 void __exit ipx_proc_exit(void)
 322 {
 323         remove_proc_entry("interface", ipx_proc_dir);
 324         remove_proc_entry("route", ipx_proc_dir);
 325         remove_proc_entry("socket", ipx_proc_dir);
 326         remove_proc_entry("ipx", init_net.proc_net);
 327 }
 328
 329 #else /* CONFIG_PROC_FS */
 330
 331 int __init ipx_proc_init(void)
 332 {
 333         return 0;
 334 }
 335
 336 void __exit ipx_proc_exit(void)
 337 {
 338 }
 339
 340 #endif /* CONFIG_PROC_FS */