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net/ipx/ipx_proc.c
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// SPDX-License-Identifier: GPL-2.0 /* * IPX proc routines * * Copyright(C) Arnaldo Carvalho de Melo <acme@conectiva.com.br>, 2002 */ #include <linux/init.h> #ifdef CONFIG_PROC_FS #include <linux/proc_fs.h> #include <linux/spinlock.h> #include <linux/seq_file.h> #include <linux/export.h> #include <net/net_namespace.h> #include <net/tcp_states.h> #include <net/ipx.h> static void *ipx_seq_interface_start(struct seq_file *seq, loff_t *pos) { spin_lock_bh(&ipx_interfaces_lock); return seq_list_start_head(&ipx_interfaces, *pos); } static void *ipx_seq_interface_next(struct seq_file *seq, void *v, loff_t *pos) { return seq_list_next(v, &ipx_interfaces, pos); } static void ipx_seq_interface_stop(struct seq_file *seq, void *v) { spin_unlock_bh(&ipx_interfaces_lock); } static int ipx_seq_interface_show(struct seq_file *seq, void *v) { struct ipx_interface *i; if (v == &ipx_interfaces) { seq_puts(seq, "Network Node_Address Primary Device " "Frame_Type"); #ifdef IPX_REFCNT_DEBUG seq_puts(seq, " refcnt"); #endif seq_puts(seq, " "); goto out; } i = list_entry(v, struct ipx_interface, node); seq_printf(seq, "%08X ", ntohl(i->if_netnum)); seq_printf(seq, "%02X%02X%02X%02X%02X%02X ", i->if_node[0], i->if_node[1], i->if_node[2], i->if_node[3], i->if_node[4], i->if_node[5]); seq_printf(seq, "%-9s", i == ipx_primary_net ? "Yes" : "No"); seq_printf(seq, "%-11s", ipx_device_name(i)); seq_printf(seq, "%-9s", ipx_frame_name(i->if_dlink_type)); #ifdef IPX_REFCNT_DEBUG seq_printf(seq, "%6d", refcount_read(&i->refcnt)); #endif seq_puts(seq, " "); out: return 0; } static void *ipx_seq_route_start(struct seq_file *seq, loff_t *pos) { read_lock_bh(&ipx_routes_lock); return seq_list_start_head(&ipx_routes, *pos); } static void *ipx_seq_route_next(struct seq_file *seq, void *v, loff_t *pos) { return seq_list_next(v, &ipx_routes, pos); } static void ipx_seq_route_stop(struct seq_file *seq, void *v) { read_unlock_bh(&ipx_routes_lock); } static int ipx_seq_route_show(struct seq_file *seq, void *v) { struct ipx_route *rt; if (v == &ipx_routes) { seq_puts(seq, "Network Router_Net Router_Node "); goto out; } rt = list_entry(v, struct ipx_route, node); seq_printf(seq, "%08X ", ntohl(rt->ir_net)); if (rt->ir_routed) seq_printf(seq, "%08X %02X%02X%02X%02X%02X%02X ", ntohl(rt->ir_intrfc->if_netnum), rt->ir_router_node[0], rt->ir_router_node[1], rt->ir_router_node[2], rt->ir_router_node[3], rt->ir_router_node[4], rt->ir_router_node[5]); else seq_puts(seq, "Directly Connected "); out: return 0; } static __inline__ struct sock *ipx_get_socket_idx(loff_t pos) { struct sock *s = NULL; struct ipx_interface *i; list_for_each_entry(i, &ipx_interfaces, node) { spin_lock_bh(&i->if_sklist_lock); sk_for_each(s, &i->if_sklist) { if (!pos) break; --pos; } spin_unlock_bh(&i->if_sklist_lock); if (!pos) { if (s) goto found; break; } } s = NULL; found: return s; } static void *ipx_seq_socket_start(struct seq_file *seq, loff_t *pos) { loff_t l = *pos; spin_lock_bh(&ipx_interfaces_lock); return l ? ipx_get_socket_idx(--l) : SEQ_START_TOKEN; } static void *ipx_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos) { struct sock* sk, *next; struct ipx_interface *i; struct ipx_sock *ipxs; ++*pos; if (v == SEQ_START_TOKEN) { sk = NULL; i = ipx_interfaces_head(); if (!i) goto out; sk = sk_head(&i->if_sklist); if (sk) spin_lock_bh(&i->if_sklist_lock); goto out; } sk = v; next = sk_next(sk); if (next) { sk = next; goto out; } ipxs = ipx_sk(sk); i = ipxs->intrfc; spin_unlock_bh(&i->if_sklist_lock); sk = NULL; for (;;) { if (i->node.next == &ipx_interfaces) break; i = list_entry(i->node.next, struct ipx_interface, node); spin_lock_bh(&i->if_sklist_lock); if (!hlist_empty(&i->if_sklist)) { sk = sk_head(&i->if_sklist); break; } spin_unlock_bh(&i->if_sklist_lock); } out: return sk; } static int ipx_seq_socket_show(struct seq_file *seq, void *v) { struct sock *s; struct ipx_sock *ipxs; if (v == SEQ_START_TOKEN) { #ifdef CONFIG_IPX_INTERN seq_puts(seq, "Local_Address " "Remote_Address Tx_Queue " "Rx_Queue State Uid "); #else seq_puts(seq, "Local_Address Remote_Address " "Tx_Queue Rx_Queue State Uid "); #endif goto out; } s = v; ipxs = ipx_sk(s); #ifdef CONFIG_IPX_INTERN seq_printf(seq, "%08X:%02X%02X%02X%02X%02X%02X:%04X ", ntohl(ipxs->intrfc->if_netnum), ipxs->node[0], ipxs->node[1], ipxs->node[2], ipxs->node[3], ipxs->node[4], ipxs->node[5], ntohs(ipxs->port)); #else seq_printf(seq, "%08X:%04X ", ntohl(ipxs->intrfc->if_netnum), ntohs(ipxs->port)); #endif /* CONFIG_IPX_INTERN */ if (s->sk_state != TCP_ESTABLISHED) seq_printf(seq, "%-28s", "Not_Connected"); else { seq_printf(seq, "%08X:%02X%02X%02X%02X%02X%02X:%04X ", ntohl(ipxs->dest_addr.net), ipxs->dest_addr.node[0], ipxs->dest_addr.node[1], ipxs->dest_addr.node[2], ipxs->dest_addr.node[3], ipxs->dest_addr.node[4], ipxs->dest_addr.node[5], ntohs(ipxs->dest_addr.sock)); } seq_printf(seq, "%08X %08X %02X %03u ", sk_wmem_alloc_get(s), sk_rmem_alloc_get(s), s->sk_state, from_kuid_munged(seq_user_ns(seq), sock_i_uid(s))); out: return 0; } static const struct seq_operations ipx_seq_interface_ops = { .start = ipx_seq_interface_start, .next = ipx_seq_interface_next, .stop = ipx_seq_interface_stop, .show = ipx_seq_interface_show, }; static const struct seq_operations ipx_seq_route_ops = { .start = ipx_seq_route_start, .next = ipx_seq_route_next, .stop = ipx_seq_route_stop, .show = ipx_seq_route_show, }; static const struct seq_operations ipx_seq_socket_ops = { .start = ipx_seq_socket_start, .next = ipx_seq_socket_next, .stop = ipx_seq_interface_stop, .show = ipx_seq_socket_show, }; static int ipx_seq_route_open(struct inode *inode, struct file *file) { return seq_open(file, &ipx_seq_route_ops); } static int ipx_seq_interface_open(struct inode *inode, struct file *file) { return seq_open(file, &ipx_seq_interface_ops); } static int ipx_seq_socket_open(struct inode *inode, struct file *file) { return seq_open(file, &ipx_seq_socket_ops); } static const struct file_operations ipx_seq_interface_fops = { .owner = THIS_MODULE, .open = ipx_seq_interface_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release, }; static const struct file_operations ipx_seq_route_fops = { .owner = THIS_MODULE, .open = ipx_seq_route_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release, }; static const struct file_operations ipx_seq_socket_fops = { .owner = THIS_MODULE, .open = ipx_seq_socket_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release, }; static struct proc_dir_entry *ipx_proc_dir; int __init ipx_proc_init(void) { struct proc_dir_entry *p; int rc = -ENOMEM; ipx_proc_dir = proc_mkdir("ipx", init_net.proc_net); if (!ipx_proc_dir) goto out; p = proc_create("interface", S_IRUGO, ipx_proc_dir, &ipx_seq_interface_fops); if (!p) goto out_interface; p = proc_create("route", S_IRUGO, ipx_proc_dir, &ipx_seq_route_fops); if (!p) goto out_route; p = proc_create("socket", S_IRUGO, ipx_proc_dir, &ipx_seq_socket_fops); if (!p) goto out_socket; rc = 0; out: return rc; out_socket: remove_proc_entry("route", ipx_proc_dir); out_route: remove_proc_entry("interface", ipx_proc_dir); out_interface: remove_proc_entry("ipx", init_net.proc_net); goto out; } void __exit ipx_proc_exit(void) { remove_proc_entry("interface", ipx_proc_dir); remove_proc_entry("route", ipx_proc_dir); remove_proc_entry("socket", ipx_proc_dir); remove_proc_entry("ipx", init_net.proc_net); } #else /* CONFIG_PROC_FS */ int __init ipx_proc_init(void) { return 0; } void __exit ipx_proc_exit(void) { } #endif /* CONFIG_PROC_FS */ |