Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * atalk_proc.c - proc support for Appletalk |
| 3 | * |
| 4 | * Copyright(c) Arnaldo Carvalho de Melo <acme@conectiva.com.br> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published by the |
| 8 | * Free Software Foundation, version 2. |
| 9 | */ |
| 10 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | #include <linux/init.h> |
| 12 | #include <linux/proc_fs.h> |
| 13 | #include <linux/seq_file.h> |
| 14 | #include <net/sock.h> |
| 15 | #include <linux/atalk.h> |
| 16 | |
| 17 | |
| 18 | static __inline__ struct atalk_iface *atalk_get_interface_idx(loff_t pos) |
| 19 | { |
| 20 | struct atalk_iface *i; |
| 21 | |
| 22 | for (i = atalk_interfaces; pos && i; i = i->next) |
| 23 | --pos; |
| 24 | |
| 25 | return i; |
| 26 | } |
| 27 | |
| 28 | static void *atalk_seq_interface_start(struct seq_file *seq, loff_t *pos) |
| 29 | { |
| 30 | loff_t l = *pos; |
| 31 | |
| 32 | read_lock_bh(&atalk_interfaces_lock); |
| 33 | return l ? atalk_get_interface_idx(--l) : SEQ_START_TOKEN; |
| 34 | } |
| 35 | |
| 36 | static void *atalk_seq_interface_next(struct seq_file *seq, void *v, loff_t *pos) |
| 37 | { |
| 38 | struct atalk_iface *i; |
| 39 | |
| 40 | ++*pos; |
| 41 | if (v == SEQ_START_TOKEN) { |
| 42 | i = NULL; |
| 43 | if (atalk_interfaces) |
| 44 | i = atalk_interfaces; |
| 45 | goto out; |
| 46 | } |
| 47 | i = v; |
| 48 | i = i->next; |
| 49 | out: |
| 50 | return i; |
| 51 | } |
| 52 | |
| 53 | static void atalk_seq_interface_stop(struct seq_file *seq, void *v) |
| 54 | { |
| 55 | read_unlock_bh(&atalk_interfaces_lock); |
| 56 | } |
| 57 | |
| 58 | static int atalk_seq_interface_show(struct seq_file *seq, void *v) |
| 59 | { |
| 60 | struct atalk_iface *iface; |
| 61 | |
| 62 | if (v == SEQ_START_TOKEN) { |
| 63 | seq_puts(seq, "Interface Address Networks " |
| 64 | "Status\n"); |
| 65 | goto out; |
| 66 | } |
| 67 | |
| 68 | iface = v; |
| 69 | seq_printf(seq, "%-16s %04X:%02X %04X-%04X %d\n", |
| 70 | iface->dev->name, ntohs(iface->address.s_net), |
| 71 | iface->address.s_node, ntohs(iface->nets.nr_firstnet), |
| 72 | ntohs(iface->nets.nr_lastnet), iface->status); |
| 73 | out: |
| 74 | return 0; |
| 75 | } |
| 76 | |
| 77 | static __inline__ struct atalk_route *atalk_get_route_idx(loff_t pos) |
| 78 | { |
| 79 | struct atalk_route *r; |
| 80 | |
| 81 | for (r = atalk_routes; pos && r; r = r->next) |
| 82 | --pos; |
| 83 | |
| 84 | return r; |
| 85 | } |
| 86 | |
| 87 | static void *atalk_seq_route_start(struct seq_file *seq, loff_t *pos) |
| 88 | { |
| 89 | loff_t l = *pos; |
| 90 | |
| 91 | read_lock_bh(&atalk_routes_lock); |
| 92 | return l ? atalk_get_route_idx(--l) : SEQ_START_TOKEN; |
| 93 | } |
| 94 | |
| 95 | static void *atalk_seq_route_next(struct seq_file *seq, void *v, loff_t *pos) |
| 96 | { |
| 97 | struct atalk_route *r; |
| 98 | |
| 99 | ++*pos; |
| 100 | if (v == SEQ_START_TOKEN) { |
| 101 | r = NULL; |
| 102 | if (atalk_routes) |
| 103 | r = atalk_routes; |
| 104 | goto out; |
| 105 | } |
| 106 | r = v; |
| 107 | r = r->next; |
| 108 | out: |
| 109 | return r; |
| 110 | } |
| 111 | |
| 112 | static void atalk_seq_route_stop(struct seq_file *seq, void *v) |
| 113 | { |
| 114 | read_unlock_bh(&atalk_routes_lock); |
| 115 | } |
| 116 | |
| 117 | static int atalk_seq_route_show(struct seq_file *seq, void *v) |
| 118 | { |
| 119 | struct atalk_route *rt; |
| 120 | |
| 121 | if (v == SEQ_START_TOKEN) { |
| 122 | seq_puts(seq, "Target Router Flags Dev\n"); |
| 123 | goto out; |
| 124 | } |
| 125 | |
| 126 | if (atrtr_default.dev) { |
| 127 | rt = &atrtr_default; |
| 128 | seq_printf(seq, "Default %04X:%02X %-4d %s\n", |
| 129 | ntohs(rt->gateway.s_net), rt->gateway.s_node, |
| 130 | rt->flags, rt->dev->name); |
| 131 | } |
| 132 | |
| 133 | rt = v; |
| 134 | seq_printf(seq, "%04X:%02X %04X:%02X %-4d %s\n", |
| 135 | ntohs(rt->target.s_net), rt->target.s_node, |
| 136 | ntohs(rt->gateway.s_net), rt->gateway.s_node, |
| 137 | rt->flags, rt->dev->name); |
| 138 | out: |
| 139 | return 0; |
| 140 | } |
| 141 | |
| 142 | static __inline__ struct sock *atalk_get_socket_idx(loff_t pos) |
| 143 | { |
| 144 | struct sock *s; |
| 145 | struct hlist_node *node; |
| 146 | |
| 147 | sk_for_each(s, node, &atalk_sockets) |
| 148 | if (!pos--) |
| 149 | goto found; |
| 150 | s = NULL; |
| 151 | found: |
| 152 | return s; |
| 153 | } |
| 154 | |
| 155 | static void *atalk_seq_socket_start(struct seq_file *seq, loff_t *pos) |
| 156 | { |
| 157 | loff_t l = *pos; |
| 158 | |
| 159 | read_lock_bh(&atalk_sockets_lock); |
| 160 | return l ? atalk_get_socket_idx(--l) : SEQ_START_TOKEN; |
| 161 | } |
| 162 | |
| 163 | static void *atalk_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos) |
| 164 | { |
| 165 | struct sock *i; |
| 166 | |
| 167 | ++*pos; |
| 168 | if (v == SEQ_START_TOKEN) { |
| 169 | i = sk_head(&atalk_sockets); |
| 170 | goto out; |
| 171 | } |
| 172 | i = sk_next(v); |
| 173 | out: |
| 174 | return i; |
| 175 | } |
| 176 | |
| 177 | static void atalk_seq_socket_stop(struct seq_file *seq, void *v) |
| 178 | { |
| 179 | read_unlock_bh(&atalk_sockets_lock); |
| 180 | } |
| 181 | |
| 182 | static int atalk_seq_socket_show(struct seq_file *seq, void *v) |
| 183 | { |
| 184 | struct sock *s; |
| 185 | struct atalk_sock *at; |
| 186 | |
| 187 | if (v == SEQ_START_TOKEN) { |
| 188 | seq_printf(seq, "Type Local_addr Remote_addr Tx_queue " |
| 189 | "Rx_queue St UID\n"); |
| 190 | goto out; |
| 191 | } |
| 192 | |
| 193 | s = v; |
| 194 | at = at_sk(s); |
| 195 | |
| 196 | seq_printf(seq, "%02X %04X:%02X:%02X %04X:%02X:%02X %08X:%08X " |
| 197 | "%02X %d\n", |
| 198 | s->sk_type, ntohs(at->src_net), at->src_node, at->src_port, |
| 199 | ntohs(at->dest_net), at->dest_node, at->dest_port, |
| 200 | atomic_read(&s->sk_wmem_alloc), |
| 201 | atomic_read(&s->sk_rmem_alloc), |
| 202 | s->sk_state, SOCK_INODE(s->sk_socket)->i_uid); |
| 203 | out: |
| 204 | return 0; |
| 205 | } |
| 206 | |
| 207 | static struct seq_operations atalk_seq_interface_ops = { |
| 208 | .start = atalk_seq_interface_start, |
| 209 | .next = atalk_seq_interface_next, |
| 210 | .stop = atalk_seq_interface_stop, |
| 211 | .show = atalk_seq_interface_show, |
| 212 | }; |
| 213 | |
| 214 | static struct seq_operations atalk_seq_route_ops = { |
| 215 | .start = atalk_seq_route_start, |
| 216 | .next = atalk_seq_route_next, |
| 217 | .stop = atalk_seq_route_stop, |
| 218 | .show = atalk_seq_route_show, |
| 219 | }; |
| 220 | |
| 221 | static struct seq_operations atalk_seq_socket_ops = { |
| 222 | .start = atalk_seq_socket_start, |
| 223 | .next = atalk_seq_socket_next, |
| 224 | .stop = atalk_seq_socket_stop, |
| 225 | .show = atalk_seq_socket_show, |
| 226 | }; |
| 227 | |
| 228 | static int atalk_seq_interface_open(struct inode *inode, struct file *file) |
| 229 | { |
| 230 | return seq_open(file, &atalk_seq_interface_ops); |
| 231 | } |
| 232 | |
| 233 | static int atalk_seq_route_open(struct inode *inode, struct file *file) |
| 234 | { |
| 235 | return seq_open(file, &atalk_seq_route_ops); |
| 236 | } |
| 237 | |
| 238 | static int atalk_seq_socket_open(struct inode *inode, struct file *file) |
| 239 | { |
| 240 | return seq_open(file, &atalk_seq_socket_ops); |
| 241 | } |
| 242 | |
Arjan van de Ven | 9a32144 | 2007-02-12 00:55:35 -0800 | [diff] [blame] | 243 | static const struct file_operations atalk_seq_interface_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | .owner = THIS_MODULE, |
| 245 | .open = atalk_seq_interface_open, |
| 246 | .read = seq_read, |
| 247 | .llseek = seq_lseek, |
| 248 | .release = seq_release, |
| 249 | }; |
| 250 | |
Arjan van de Ven | 9a32144 | 2007-02-12 00:55:35 -0800 | [diff] [blame] | 251 | static const struct file_operations atalk_seq_route_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | .owner = THIS_MODULE, |
| 253 | .open = atalk_seq_route_open, |
| 254 | .read = seq_read, |
| 255 | .llseek = seq_lseek, |
| 256 | .release = seq_release, |
| 257 | }; |
| 258 | |
Arjan van de Ven | 9a32144 | 2007-02-12 00:55:35 -0800 | [diff] [blame] | 259 | static const struct file_operations atalk_seq_socket_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | .owner = THIS_MODULE, |
| 261 | .open = atalk_seq_socket_open, |
| 262 | .read = seq_read, |
| 263 | .llseek = seq_lseek, |
| 264 | .release = seq_release, |
| 265 | }; |
| 266 | |
| 267 | static struct proc_dir_entry *atalk_proc_dir; |
| 268 | |
| 269 | int __init atalk_proc_init(void) |
| 270 | { |
| 271 | struct proc_dir_entry *p; |
| 272 | int rc = -ENOMEM; |
| 273 | |
| 274 | atalk_proc_dir = proc_mkdir("atalk", proc_net); |
| 275 | if (!atalk_proc_dir) |
| 276 | goto out; |
| 277 | atalk_proc_dir->owner = THIS_MODULE; |
| 278 | |
| 279 | p = create_proc_entry("interface", S_IRUGO, atalk_proc_dir); |
| 280 | if (!p) |
| 281 | goto out_interface; |
| 282 | p->proc_fops = &atalk_seq_interface_fops; |
| 283 | |
| 284 | p = create_proc_entry("route", S_IRUGO, atalk_proc_dir); |
| 285 | if (!p) |
| 286 | goto out_route; |
| 287 | p->proc_fops = &atalk_seq_route_fops; |
| 288 | |
| 289 | p = create_proc_entry("socket", S_IRUGO, atalk_proc_dir); |
| 290 | if (!p) |
| 291 | goto out_socket; |
| 292 | p->proc_fops = &atalk_seq_socket_fops; |
| 293 | |
| 294 | p = create_proc_entry("arp", S_IRUGO, atalk_proc_dir); |
YOSHIFUJI Hideaki | ed4477b | 2007-02-09 23:24:27 +0900 | [diff] [blame] | 295 | if (!p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | goto out_arp; |
| 297 | p->proc_fops = &atalk_seq_arp_fops; |
| 298 | |
| 299 | rc = 0; |
| 300 | out: |
| 301 | return rc; |
| 302 | out_arp: |
| 303 | remove_proc_entry("socket", atalk_proc_dir); |
| 304 | out_socket: |
| 305 | remove_proc_entry("route", atalk_proc_dir); |
| 306 | out_route: |
| 307 | remove_proc_entry("interface", atalk_proc_dir); |
| 308 | out_interface: |
| 309 | remove_proc_entry("atalk", proc_net); |
| 310 | goto out; |
| 311 | } |
| 312 | |
| 313 | void __exit atalk_proc_exit(void) |
| 314 | { |
| 315 | remove_proc_entry("interface", atalk_proc_dir); |
| 316 | remove_proc_entry("route", atalk_proc_dir); |
| 317 | remove_proc_entry("socket", atalk_proc_dir); |
| 318 | remove_proc_entry("arp", atalk_proc_dir); |
| 319 | remove_proc_entry("atalk", proc_net); |
| 320 | } |