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242 lines
5.3 KiB
242 lines
5.3 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* atalk_proc.c - proc support for Appletalk |
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* |
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* Copyright(c) Arnaldo Carvalho de Melo <[email protected]> |
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*/ |
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#include <linux/init.h> |
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#include <linux/proc_fs.h> |
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#include <linux/seq_file.h> |
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#include <net/net_namespace.h> |
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#include <net/sock.h> |
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#include <linux/atalk.h> |
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#include <linux/export.h> |
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static __inline__ struct atalk_iface *atalk_get_interface_idx(loff_t pos) |
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{ |
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struct atalk_iface *i; |
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for (i = atalk_interfaces; pos && i; i = i->next) |
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--pos; |
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return i; |
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} |
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static void *atalk_seq_interface_start(struct seq_file *seq, loff_t *pos) |
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__acquires(atalk_interfaces_lock) |
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{ |
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loff_t l = *pos; |
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read_lock_bh(&atalk_interfaces_lock); |
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return l ? atalk_get_interface_idx(--l) : SEQ_START_TOKEN; |
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} |
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static void *atalk_seq_interface_next(struct seq_file *seq, void *v, loff_t *pos) |
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{ |
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struct atalk_iface *i; |
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++*pos; |
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if (v == SEQ_START_TOKEN) { |
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i = NULL; |
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if (atalk_interfaces) |
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i = atalk_interfaces; |
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goto out; |
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} |
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i = v; |
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i = i->next; |
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out: |
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return i; |
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} |
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static void atalk_seq_interface_stop(struct seq_file *seq, void *v) |
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__releases(atalk_interfaces_lock) |
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{ |
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read_unlock_bh(&atalk_interfaces_lock); |
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} |
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static int atalk_seq_interface_show(struct seq_file *seq, void *v) |
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{ |
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struct atalk_iface *iface; |
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if (v == SEQ_START_TOKEN) { |
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seq_puts(seq, "Interface Address Networks " |
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"Status\n"); |
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goto out; |
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} |
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iface = v; |
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seq_printf(seq, "%-16s %04X:%02X %04X-%04X %d\n", |
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iface->dev->name, ntohs(iface->address.s_net), |
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iface->address.s_node, ntohs(iface->nets.nr_firstnet), |
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ntohs(iface->nets.nr_lastnet), iface->status); |
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out: |
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return 0; |
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} |
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static __inline__ struct atalk_route *atalk_get_route_idx(loff_t pos) |
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{ |
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struct atalk_route *r; |
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for (r = atalk_routes; pos && r; r = r->next) |
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--pos; |
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return r; |
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} |
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static void *atalk_seq_route_start(struct seq_file *seq, loff_t *pos) |
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__acquires(atalk_routes_lock) |
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{ |
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loff_t l = *pos; |
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read_lock_bh(&atalk_routes_lock); |
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return l ? atalk_get_route_idx(--l) : SEQ_START_TOKEN; |
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} |
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static void *atalk_seq_route_next(struct seq_file *seq, void *v, loff_t *pos) |
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{ |
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struct atalk_route *r; |
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++*pos; |
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if (v == SEQ_START_TOKEN) { |
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r = NULL; |
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if (atalk_routes) |
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r = atalk_routes; |
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goto out; |
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} |
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r = v; |
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r = r->next; |
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out: |
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return r; |
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} |
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static void atalk_seq_route_stop(struct seq_file *seq, void *v) |
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__releases(atalk_routes_lock) |
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{ |
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read_unlock_bh(&atalk_routes_lock); |
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} |
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static int atalk_seq_route_show(struct seq_file *seq, void *v) |
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{ |
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struct atalk_route *rt; |
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if (v == SEQ_START_TOKEN) { |
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seq_puts(seq, "Target Router Flags Dev\n"); |
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goto out; |
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} |
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if (atrtr_default.dev) { |
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rt = &atrtr_default; |
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seq_printf(seq, "Default %04X:%02X %-4d %s\n", |
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ntohs(rt->gateway.s_net), rt->gateway.s_node, |
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rt->flags, rt->dev->name); |
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} |
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rt = v; |
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seq_printf(seq, "%04X:%02X %04X:%02X %-4d %s\n", |
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ntohs(rt->target.s_net), rt->target.s_node, |
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ntohs(rt->gateway.s_net), rt->gateway.s_node, |
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rt->flags, rt->dev->name); |
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out: |
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return 0; |
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} |
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static void *atalk_seq_socket_start(struct seq_file *seq, loff_t *pos) |
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__acquires(atalk_sockets_lock) |
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{ |
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read_lock_bh(&atalk_sockets_lock); |
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return seq_hlist_start_head(&atalk_sockets, *pos); |
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} |
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static void *atalk_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos) |
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{ |
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return seq_hlist_next(v, &atalk_sockets, pos); |
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} |
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static void atalk_seq_socket_stop(struct seq_file *seq, void *v) |
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__releases(atalk_sockets_lock) |
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{ |
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read_unlock_bh(&atalk_sockets_lock); |
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} |
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static int atalk_seq_socket_show(struct seq_file *seq, void *v) |
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{ |
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struct sock *s; |
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struct atalk_sock *at; |
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if (v == SEQ_START_TOKEN) { |
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seq_printf(seq, "Type Local_addr Remote_addr Tx_queue " |
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"Rx_queue St UID\n"); |
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goto out; |
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} |
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s = sk_entry(v); |
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at = at_sk(s); |
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seq_printf(seq, "%02X %04X:%02X:%02X %04X:%02X:%02X %08X:%08X " |
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"%02X %u\n", |
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s->sk_type, ntohs(at->src_net), at->src_node, at->src_port, |
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ntohs(at->dest_net), at->dest_node, at->dest_port, |
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sk_wmem_alloc_get(s), |
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sk_rmem_alloc_get(s), |
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s->sk_state, |
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from_kuid_munged(seq_user_ns(seq), sock_i_uid(s))); |
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out: |
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return 0; |
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} |
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static const struct seq_operations atalk_seq_interface_ops = { |
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.start = atalk_seq_interface_start, |
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.next = atalk_seq_interface_next, |
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.stop = atalk_seq_interface_stop, |
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.show = atalk_seq_interface_show, |
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}; |
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static const struct seq_operations atalk_seq_route_ops = { |
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.start = atalk_seq_route_start, |
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.next = atalk_seq_route_next, |
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.stop = atalk_seq_route_stop, |
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.show = atalk_seq_route_show, |
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}; |
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static const struct seq_operations atalk_seq_socket_ops = { |
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.start = atalk_seq_socket_start, |
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.next = atalk_seq_socket_next, |
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.stop = atalk_seq_socket_stop, |
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.show = atalk_seq_socket_show, |
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}; |
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int __init atalk_proc_init(void) |
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{ |
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if (!proc_mkdir("atalk", init_net.proc_net)) |
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return -ENOMEM; |
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if (!proc_create_seq("atalk/interface", 0444, init_net.proc_net, |
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&atalk_seq_interface_ops)) |
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goto out; |
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if (!proc_create_seq("atalk/route", 0444, init_net.proc_net, |
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&atalk_seq_route_ops)) |
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goto out; |
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if (!proc_create_seq("atalk/socket", 0444, init_net.proc_net, |
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&atalk_seq_socket_ops)) |
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goto out; |
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if (!proc_create_seq_private("atalk/arp", 0444, init_net.proc_net, |
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&aarp_seq_ops, |
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sizeof(struct aarp_iter_state), NULL)) |
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goto out; |
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return 0; |
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out: |
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remove_proc_subtree("atalk", init_net.proc_net); |
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return -ENOMEM; |
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} |
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void atalk_proc_exit(void) |
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{ |
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remove_proc_subtree("atalk", init_net.proc_net); |
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}
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