Root/kernel/sysctl_binary.c

1#include <linux/stat.h>
2#include <linux/sysctl.h>
3#include "../fs/xfs/xfs_sysctl.h"
4#include <linux/sunrpc/debug.h>
5#include <linux/string.h>
6#include <linux/syscalls.h>
7#include <linux/namei.h>
8#include <linux/mount.h>
9#include <linux/fs.h>
10#include <linux/nsproxy.h>
11#include <linux/pid_namespace.h>
12#include <linux/file.h>
13#include <linux/ctype.h>
14#include <linux/netdevice.h>
15#include <linux/kernel.h>
16#include <linux/slab.h>
17#include <linux/compat.h>
18
19#ifdef CONFIG_SYSCTL_SYSCALL
20
21struct bin_table;
22typedef ssize_t bin_convert_t(struct file *file,
23    void __user *oldval, size_t oldlen, void __user *newval, size_t newlen);
24
25static bin_convert_t bin_dir;
26static bin_convert_t bin_string;
27static bin_convert_t bin_intvec;
28static bin_convert_t bin_ulongvec;
29static bin_convert_t bin_uuid;
30static bin_convert_t bin_dn_node_address;
31
32#define CTL_DIR bin_dir
33#define CTL_STR bin_string
34#define CTL_INT bin_intvec
35#define CTL_ULONG bin_ulongvec
36#define CTL_UUID bin_uuid
37#define CTL_DNADR bin_dn_node_address
38
39#define BUFSZ 256
40
41struct bin_table {
42    bin_convert_t *convert;
43    int ctl_name;
44    const char *procname;
45    const struct bin_table *child;
46};
47
48static const struct bin_table bin_random_table[] = {
49    { CTL_INT, RANDOM_POOLSIZE, "poolsize" },
50    { CTL_INT, RANDOM_ENTROPY_COUNT, "entropy_avail" },
51    { CTL_INT, RANDOM_READ_THRESH, "read_wakeup_threshold" },
52    { CTL_INT, RANDOM_WRITE_THRESH, "write_wakeup_threshold" },
53    { CTL_UUID, RANDOM_BOOT_ID, "boot_id" },
54    { CTL_UUID, RANDOM_UUID, "uuid" },
55    {}
56};
57
58static const struct bin_table bin_pty_table[] = {
59    { CTL_INT, PTY_MAX, "max" },
60    { CTL_INT, PTY_NR, "nr" },
61    {}
62};
63
64static const struct bin_table bin_kern_table[] = {
65    { CTL_STR, KERN_OSTYPE, "ostype" },
66    { CTL_STR, KERN_OSRELEASE, "osrelease" },
67    /* KERN_OSREV not used */
68    { CTL_STR, KERN_VERSION, "version" },
69    /* KERN_SECUREMASK not used */
70    /* KERN_PROF not used */
71    { CTL_STR, KERN_NODENAME, "hostname" },
72    { CTL_STR, KERN_DOMAINNAME, "domainname" },
73
74    { CTL_INT, KERN_PANIC, "panic" },
75    { CTL_INT, KERN_REALROOTDEV, "real-root-dev" },
76
77    { CTL_STR, KERN_SPARC_REBOOT, "reboot-cmd" },
78    { CTL_INT, KERN_CTLALTDEL, "ctrl-alt-del" },
79    { CTL_INT, KERN_PRINTK, "printk" },
80
81    /* KERN_NAMETRANS not used */
82    /* KERN_PPC_HTABRECLAIM not used */
83    /* KERN_PPC_ZEROPAGED not used */
84    { CTL_INT, KERN_PPC_POWERSAVE_NAP, "powersave-nap" },
85
86    { CTL_STR, KERN_MODPROBE, "modprobe" },
87    { CTL_INT, KERN_SG_BIG_BUFF, "sg-big-buff" },
88    { CTL_INT, KERN_ACCT, "acct" },
89    /* KERN_PPC_L2CR "l2cr" no longer used */
90
91    /* KERN_RTSIGNR not used */
92    /* KERN_RTSIGMAX not used */
93
94    { CTL_ULONG, KERN_SHMMAX, "shmmax" },
95    { CTL_INT, KERN_MSGMAX, "msgmax" },
96    { CTL_INT, KERN_MSGMNB, "msgmnb" },
97    /* KERN_MSGPOOL not used*/
98    { CTL_INT, KERN_SYSRQ, "sysrq" },
99    { CTL_INT, KERN_MAX_THREADS, "threads-max" },
100    { CTL_DIR, KERN_RANDOM, "random", bin_random_table },
101    { CTL_ULONG, KERN_SHMALL, "shmall" },
102    { CTL_INT, KERN_MSGMNI, "msgmni" },
103    { CTL_INT, KERN_SEM, "sem" },
104    { CTL_INT, KERN_SPARC_STOP_A, "stop-a" },
105    { CTL_INT, KERN_SHMMNI, "shmmni" },
106
107    { CTL_INT, KERN_OVERFLOWUID, "overflowuid" },
108    { CTL_INT, KERN_OVERFLOWGID, "overflowgid" },
109
110    { CTL_STR, KERN_HOTPLUG, "hotplug", },
111    { CTL_INT, KERN_IEEE_EMULATION_WARNINGS, "ieee_emulation_warnings" },
112
113    { CTL_INT, KERN_S390_USER_DEBUG_LOGGING, "userprocess_debug" },
114    { CTL_INT, KERN_CORE_USES_PID, "core_uses_pid" },
115    /* KERN_TAINTED "tainted" no longer used */
116    { CTL_INT, KERN_CADPID, "cad_pid" },
117    { CTL_INT, KERN_PIDMAX, "pid_max" },
118    { CTL_STR, KERN_CORE_PATTERN, "core_pattern" },
119    { CTL_INT, KERN_PANIC_ON_OOPS, "panic_on_oops" },
120    { CTL_INT, KERN_HPPA_PWRSW, "soft-power" },
121    { CTL_INT, KERN_HPPA_UNALIGNED, "unaligned-trap" },
122
123    { CTL_INT, KERN_PRINTK_RATELIMIT, "printk_ratelimit" },
124    { CTL_INT, KERN_PRINTK_RATELIMIT_BURST, "printk_ratelimit_burst" },
125
126    { CTL_DIR, KERN_PTY, "pty", bin_pty_table },
127    { CTL_INT, KERN_NGROUPS_MAX, "ngroups_max" },
128    { CTL_INT, KERN_SPARC_SCONS_PWROFF, "scons-poweroff" },
129    /* KERN_HZ_TIMER "hz_timer" no longer used */
130    { CTL_INT, KERN_UNKNOWN_NMI_PANIC, "unknown_nmi_panic" },
131    { CTL_INT, KERN_BOOTLOADER_TYPE, "bootloader_type" },
132    { CTL_INT, KERN_RANDOMIZE, "randomize_va_space" },
133
134    { CTL_INT, KERN_SPIN_RETRY, "spin_retry" },
135    /* KERN_ACPI_VIDEO_FLAGS "acpi_video_flags" no longer used */
136    { CTL_INT, KERN_IA64_UNALIGNED, "ignore-unaligned-usertrap" },
137    { CTL_INT, KERN_COMPAT_LOG, "compat-log" },
138    { CTL_INT, KERN_MAX_LOCK_DEPTH, "max_lock_depth" },
139    { CTL_INT, KERN_PANIC_ON_NMI, "panic_on_unrecovered_nmi" },
140    {}
141};
142
143static const struct bin_table bin_vm_table[] = {
144    { CTL_INT, VM_OVERCOMMIT_MEMORY, "overcommit_memory" },
145    { CTL_INT, VM_PAGE_CLUSTER, "page-cluster" },
146    { CTL_INT, VM_DIRTY_BACKGROUND, "dirty_background_ratio" },
147    { CTL_INT, VM_DIRTY_RATIO, "dirty_ratio" },
148    /* VM_DIRTY_WB_CS "dirty_writeback_centisecs" no longer used */
149    /* VM_DIRTY_EXPIRE_CS "dirty_expire_centisecs" no longer used */
150    /* VM_NR_PDFLUSH_THREADS "nr_pdflush_threads" no longer used */
151    { CTL_INT, VM_OVERCOMMIT_RATIO, "overcommit_ratio" },
152    /* VM_PAGEBUF unused */
153    /* VM_HUGETLB_PAGES "nr_hugepages" no longer used */
154    { CTL_INT, VM_SWAPPINESS, "swappiness" },
155    { CTL_INT, VM_LOWMEM_RESERVE_RATIO, "lowmem_reserve_ratio" },
156    { CTL_INT, VM_MIN_FREE_KBYTES, "min_free_kbytes" },
157    { CTL_INT, VM_MAX_MAP_COUNT, "max_map_count" },
158    { CTL_INT, VM_LAPTOP_MODE, "laptop_mode" },
159    { CTL_INT, VM_BLOCK_DUMP, "block_dump" },
160    { CTL_INT, VM_HUGETLB_GROUP, "hugetlb_shm_group" },
161    { CTL_INT, VM_VFS_CACHE_PRESSURE, "vfs_cache_pressure" },
162    { CTL_INT, VM_LEGACY_VA_LAYOUT, "legacy_va_layout" },
163    /* VM_SWAP_TOKEN_TIMEOUT unused */
164    { CTL_INT, VM_DROP_PAGECACHE, "drop_caches" },
165    { CTL_INT, VM_PERCPU_PAGELIST_FRACTION, "percpu_pagelist_fraction" },
166    { CTL_INT, VM_ZONE_RECLAIM_MODE, "zone_reclaim_mode" },
167    { CTL_INT, VM_MIN_UNMAPPED, "min_unmapped_ratio" },
168    { CTL_INT, VM_PANIC_ON_OOM, "panic_on_oom" },
169    { CTL_INT, VM_VDSO_ENABLED, "vdso_enabled" },
170    { CTL_INT, VM_MIN_SLAB, "min_slab_ratio" },
171
172    {}
173};
174
175static const struct bin_table bin_net_core_table[] = {
176    { CTL_INT, NET_CORE_WMEM_MAX, "wmem_max" },
177    { CTL_INT, NET_CORE_RMEM_MAX, "rmem_max" },
178    { CTL_INT, NET_CORE_WMEM_DEFAULT, "wmem_default" },
179    { CTL_INT, NET_CORE_RMEM_DEFAULT, "rmem_default" },
180    /* NET_CORE_DESTROY_DELAY unused */
181    { CTL_INT, NET_CORE_MAX_BACKLOG, "netdev_max_backlog" },
182    /* NET_CORE_FASTROUTE unused */
183    { CTL_INT, NET_CORE_MSG_COST, "message_cost" },
184    { CTL_INT, NET_CORE_MSG_BURST, "message_burst" },
185    { CTL_INT, NET_CORE_OPTMEM_MAX, "optmem_max" },
186    /* NET_CORE_HOT_LIST_LENGTH unused */
187    /* NET_CORE_DIVERT_VERSION unused */
188    /* NET_CORE_NO_CONG_THRESH unused */
189    /* NET_CORE_NO_CONG unused */
190    /* NET_CORE_LO_CONG unused */
191    /* NET_CORE_MOD_CONG unused */
192    { CTL_INT, NET_CORE_DEV_WEIGHT, "dev_weight" },
193    { CTL_INT, NET_CORE_SOMAXCONN, "somaxconn" },
194    { CTL_INT, NET_CORE_BUDGET, "netdev_budget" },
195    { CTL_INT, NET_CORE_AEVENT_ETIME, "xfrm_aevent_etime" },
196    { CTL_INT, NET_CORE_AEVENT_RSEQTH, "xfrm_aevent_rseqth" },
197    { CTL_INT, NET_CORE_WARNINGS, "warnings" },
198    {},
199};
200
201static const struct bin_table bin_net_unix_table[] = {
202    /* NET_UNIX_DESTROY_DELAY unused */
203    /* NET_UNIX_DELETE_DELAY unused */
204    { CTL_INT, NET_UNIX_MAX_DGRAM_QLEN, "max_dgram_qlen" },
205    {}
206};
207
208static const struct bin_table bin_net_ipv4_route_table[] = {
209    { CTL_INT, NET_IPV4_ROUTE_FLUSH, "flush" },
210    /* NET_IPV4_ROUTE_MIN_DELAY "min_delay" no longer used */
211    /* NET_IPV4_ROUTE_MAX_DELAY "max_delay" no longer used */
212    { CTL_INT, NET_IPV4_ROUTE_GC_THRESH, "gc_thresh" },
213    { CTL_INT, NET_IPV4_ROUTE_MAX_SIZE, "max_size" },
214    { CTL_INT, NET_IPV4_ROUTE_GC_MIN_INTERVAL, "gc_min_interval" },
215    { CTL_INT, NET_IPV4_ROUTE_GC_MIN_INTERVAL_MS, "gc_min_interval_ms" },
216    { CTL_INT, NET_IPV4_ROUTE_GC_TIMEOUT, "gc_timeout" },
217    /* NET_IPV4_ROUTE_GC_INTERVAL "gc_interval" no longer used */
218    { CTL_INT, NET_IPV4_ROUTE_REDIRECT_LOAD, "redirect_load" },
219    { CTL_INT, NET_IPV4_ROUTE_REDIRECT_NUMBER, "redirect_number" },
220    { CTL_INT, NET_IPV4_ROUTE_REDIRECT_SILENCE, "redirect_silence" },
221    { CTL_INT, NET_IPV4_ROUTE_ERROR_COST, "error_cost" },
222    { CTL_INT, NET_IPV4_ROUTE_ERROR_BURST, "error_burst" },
223    { CTL_INT, NET_IPV4_ROUTE_GC_ELASTICITY, "gc_elasticity" },
224    { CTL_INT, NET_IPV4_ROUTE_MTU_EXPIRES, "mtu_expires" },
225    { CTL_INT, NET_IPV4_ROUTE_MIN_PMTU, "min_pmtu" },
226    { CTL_INT, NET_IPV4_ROUTE_MIN_ADVMSS, "min_adv_mss" },
227    {}
228};
229
230static const struct bin_table bin_net_ipv4_conf_vars_table[] = {
231    { CTL_INT, NET_IPV4_CONF_FORWARDING, "forwarding" },
232    { CTL_INT, NET_IPV4_CONF_MC_FORWARDING, "mc_forwarding" },
233
234    { CTL_INT, NET_IPV4_CONF_ACCEPT_REDIRECTS, "accept_redirects" },
235    { CTL_INT, NET_IPV4_CONF_SECURE_REDIRECTS, "secure_redirects" },
236    { CTL_INT, NET_IPV4_CONF_SEND_REDIRECTS, "send_redirects" },
237    { CTL_INT, NET_IPV4_CONF_SHARED_MEDIA, "shared_media" },
238    { CTL_INT, NET_IPV4_CONF_RP_FILTER, "rp_filter" },
239    { CTL_INT, NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE, "accept_source_route" },
240    { CTL_INT, NET_IPV4_CONF_PROXY_ARP, "proxy_arp" },
241    { CTL_INT, NET_IPV4_CONF_MEDIUM_ID, "medium_id" },
242    { CTL_INT, NET_IPV4_CONF_BOOTP_RELAY, "bootp_relay" },
243    { CTL_INT, NET_IPV4_CONF_LOG_MARTIANS, "log_martians" },
244    { CTL_INT, NET_IPV4_CONF_TAG, "tag" },
245    { CTL_INT, NET_IPV4_CONF_ARPFILTER, "arp_filter" },
246    { CTL_INT, NET_IPV4_CONF_ARP_ANNOUNCE, "arp_announce" },
247    { CTL_INT, NET_IPV4_CONF_ARP_IGNORE, "arp_ignore" },
248    { CTL_INT, NET_IPV4_CONF_ARP_ACCEPT, "arp_accept" },
249    { CTL_INT, NET_IPV4_CONF_ARP_NOTIFY, "arp_notify" },
250
251    { CTL_INT, NET_IPV4_CONF_NOXFRM, "disable_xfrm" },
252    { CTL_INT, NET_IPV4_CONF_NOPOLICY, "disable_policy" },
253    { CTL_INT, NET_IPV4_CONF_FORCE_IGMP_VERSION, "force_igmp_version" },
254    { CTL_INT, NET_IPV4_CONF_PROMOTE_SECONDARIES, "promote_secondaries" },
255    {}
256};
257
258static const struct bin_table bin_net_ipv4_conf_table[] = {
259    { CTL_DIR, NET_PROTO_CONF_ALL, "all", bin_net_ipv4_conf_vars_table },
260    { CTL_DIR, NET_PROTO_CONF_DEFAULT, "default", bin_net_ipv4_conf_vars_table },
261    { CTL_DIR, 0, NULL, bin_net_ipv4_conf_vars_table },
262    {}
263};
264
265static const struct bin_table bin_net_neigh_vars_table[] = {
266    { CTL_INT, NET_NEIGH_MCAST_SOLICIT, "mcast_solicit" },
267    { CTL_INT, NET_NEIGH_UCAST_SOLICIT, "ucast_solicit" },
268    { CTL_INT, NET_NEIGH_APP_SOLICIT, "app_solicit" },
269    /* NET_NEIGH_RETRANS_TIME "retrans_time" no longer used */
270    { CTL_INT, NET_NEIGH_REACHABLE_TIME, "base_reachable_time" },
271    { CTL_INT, NET_NEIGH_DELAY_PROBE_TIME, "delay_first_probe_time" },
272    { CTL_INT, NET_NEIGH_GC_STALE_TIME, "gc_stale_time" },
273    { CTL_INT, NET_NEIGH_UNRES_QLEN, "unres_qlen" },
274    { CTL_INT, NET_NEIGH_PROXY_QLEN, "proxy_qlen" },
275    /* NET_NEIGH_ANYCAST_DELAY "anycast_delay" no longer used */
276    /* NET_NEIGH_PROXY_DELAY "proxy_delay" no longer used */
277    /* NET_NEIGH_LOCKTIME "locktime" no longer used */
278    { CTL_INT, NET_NEIGH_GC_INTERVAL, "gc_interval" },
279    { CTL_INT, NET_NEIGH_GC_THRESH1, "gc_thresh1" },
280    { CTL_INT, NET_NEIGH_GC_THRESH2, "gc_thresh2" },
281    { CTL_INT, NET_NEIGH_GC_THRESH3, "gc_thresh3" },
282    { CTL_INT, NET_NEIGH_RETRANS_TIME_MS, "retrans_time_ms" },
283    { CTL_INT, NET_NEIGH_REACHABLE_TIME_MS, "base_reachable_time_ms" },
284    {}
285};
286
287static const struct bin_table bin_net_neigh_table[] = {
288    { CTL_DIR, NET_PROTO_CONF_DEFAULT, "default", bin_net_neigh_vars_table },
289    { CTL_DIR, 0, NULL, bin_net_neigh_vars_table },
290    {}
291};
292
293static const struct bin_table bin_net_ipv4_netfilter_table[] = {
294    { CTL_INT, NET_IPV4_NF_CONNTRACK_MAX, "ip_conntrack_max" },
295
296    /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT "ip_conntrack_tcp_timeout_syn_sent" no longer used */
297    /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV "ip_conntrack_tcp_timeout_syn_recv" no longer used */
298    /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED "ip_conntrack_tcp_timeout_established" no longer used */
299    /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT "ip_conntrack_tcp_timeout_fin_wait" no longer used */
300    /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT "ip_conntrack_tcp_timeout_close_wait" no longer used */
301    /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK "ip_conntrack_tcp_timeout_last_ack" no longer used */
302    /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT "ip_conntrack_tcp_timeout_time_wait" no longer used */
303    /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE "ip_conntrack_tcp_timeout_close" no longer used */
304
305    /* NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT "ip_conntrack_udp_timeout" no longer used */
306    /* NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM "ip_conntrack_udp_timeout_stream" no longer used */
307    /* NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT "ip_conntrack_icmp_timeout" no longer used */
308    /* NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT "ip_conntrack_generic_timeout" no longer used */
309
310    { CTL_INT, NET_IPV4_NF_CONNTRACK_BUCKETS, "ip_conntrack_buckets" },
311    { CTL_INT, NET_IPV4_NF_CONNTRACK_LOG_INVALID, "ip_conntrack_log_invalid" },
312    /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS "ip_conntrack_tcp_timeout_max_retrans" no longer used */
313    { CTL_INT, NET_IPV4_NF_CONNTRACK_TCP_LOOSE, "ip_conntrack_tcp_loose" },
314    { CTL_INT, NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL, "ip_conntrack_tcp_be_liberal" },
315    { CTL_INT, NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS, "ip_conntrack_tcp_max_retrans" },
316
317    /* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED "ip_conntrack_sctp_timeout_closed" no longer used */
318    /* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT "ip_conntrack_sctp_timeout_cookie_wait" no longer used */
319    /* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED "ip_conntrack_sctp_timeout_cookie_echoed" no longer used */
320    /* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED "ip_conntrack_sctp_timeout_established" no longer used */
321    /* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT "ip_conntrack_sctp_timeout_shutdown_sent" no longer used */
322    /* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD "ip_conntrack_sctp_timeout_shutdown_recd" no longer used */
323    /* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT "ip_conntrack_sctp_timeout_shutdown_ack_sent" no longer used */
324
325    { CTL_INT, NET_IPV4_NF_CONNTRACK_COUNT, "ip_conntrack_count" },
326    { CTL_INT, NET_IPV4_NF_CONNTRACK_CHECKSUM, "ip_conntrack_checksum" },
327    {}
328};
329
330static const struct bin_table bin_net_ipv4_table[] = {
331    {CTL_INT, NET_IPV4_FORWARD, "ip_forward" },
332
333    { CTL_DIR, NET_IPV4_CONF, "conf", bin_net_ipv4_conf_table },
334    { CTL_DIR, NET_IPV4_NEIGH, "neigh", bin_net_neigh_table },
335    { CTL_DIR, NET_IPV4_ROUTE, "route", bin_net_ipv4_route_table },
336    /* NET_IPV4_FIB_HASH unused */
337    { CTL_DIR, NET_IPV4_NETFILTER, "netfilter", bin_net_ipv4_netfilter_table },
338
339    { CTL_INT, NET_IPV4_TCP_TIMESTAMPS, "tcp_timestamps" },
340    { CTL_INT, NET_IPV4_TCP_WINDOW_SCALING, "tcp_window_scaling" },
341    { CTL_INT, NET_IPV4_TCP_SACK, "tcp_sack" },
342    { CTL_INT, NET_IPV4_TCP_RETRANS_COLLAPSE, "tcp_retrans_collapse" },
343    { CTL_INT, NET_IPV4_DEFAULT_TTL, "ip_default_ttl" },
344    /* NET_IPV4_AUTOCONFIG unused */
345    { CTL_INT, NET_IPV4_NO_PMTU_DISC, "ip_no_pmtu_disc" },
346    { CTL_INT, NET_IPV4_NONLOCAL_BIND, "ip_nonlocal_bind" },
347    { CTL_INT, NET_IPV4_TCP_SYN_RETRIES, "tcp_syn_retries" },
348    { CTL_INT, NET_TCP_SYNACK_RETRIES, "tcp_synack_retries" },
349    { CTL_INT, NET_TCP_MAX_ORPHANS, "tcp_max_orphans" },
350    { CTL_INT, NET_TCP_MAX_TW_BUCKETS, "tcp_max_tw_buckets" },
351    { CTL_INT, NET_IPV4_DYNADDR, "ip_dynaddr" },
352    { CTL_INT, NET_IPV4_TCP_KEEPALIVE_TIME, "tcp_keepalive_time" },
353    { CTL_INT, NET_IPV4_TCP_KEEPALIVE_PROBES, "tcp_keepalive_probes" },
354    { CTL_INT, NET_IPV4_TCP_KEEPALIVE_INTVL, "tcp_keepalive_intvl" },
355    { CTL_INT, NET_IPV4_TCP_RETRIES1, "tcp_retries1" },
356    { CTL_INT, NET_IPV4_TCP_RETRIES2, "tcp_retries2" },
357    { CTL_INT, NET_IPV4_TCP_FIN_TIMEOUT, "tcp_fin_timeout" },
358    { CTL_INT, NET_TCP_SYNCOOKIES, "tcp_syncookies" },
359    { CTL_INT, NET_TCP_TW_RECYCLE, "tcp_tw_recycle" },
360    { CTL_INT, NET_TCP_ABORT_ON_OVERFLOW, "tcp_abort_on_overflow" },
361    { CTL_INT, NET_TCP_STDURG, "tcp_stdurg" },
362    { CTL_INT, NET_TCP_RFC1337, "tcp_rfc1337" },
363    { CTL_INT, NET_TCP_MAX_SYN_BACKLOG, "tcp_max_syn_backlog" },
364    { CTL_INT, NET_IPV4_LOCAL_PORT_RANGE, "ip_local_port_range" },
365    { CTL_INT, NET_IPV4_IGMP_MAX_MEMBERSHIPS, "igmp_max_memberships" },
366    { CTL_INT, NET_IPV4_IGMP_MAX_MSF, "igmp_max_msf" },
367    { CTL_INT, NET_IPV4_INET_PEER_THRESHOLD, "inet_peer_threshold" },
368    { CTL_INT, NET_IPV4_INET_PEER_MINTTL, "inet_peer_minttl" },
369    { CTL_INT, NET_IPV4_INET_PEER_MAXTTL, "inet_peer_maxttl" },
370    { CTL_INT, NET_IPV4_INET_PEER_GC_MINTIME, "inet_peer_gc_mintime" },
371    { CTL_INT, NET_IPV4_INET_PEER_GC_MAXTIME, "inet_peer_gc_maxtime" },
372    { CTL_INT, NET_TCP_ORPHAN_RETRIES, "tcp_orphan_retries" },
373    { CTL_INT, NET_TCP_FACK, "tcp_fack" },
374    { CTL_INT, NET_TCP_REORDERING, "tcp_reordering" },
375    { CTL_INT, NET_TCP_ECN, "tcp_ecn" },
376    { CTL_INT, NET_TCP_DSACK, "tcp_dsack" },
377    { CTL_INT, NET_TCP_MEM, "tcp_mem" },
378    { CTL_INT, NET_TCP_WMEM, "tcp_wmem" },
379    { CTL_INT, NET_TCP_RMEM, "tcp_rmem" },
380    { CTL_INT, NET_TCP_APP_WIN, "tcp_app_win" },
381    { CTL_INT, NET_TCP_ADV_WIN_SCALE, "tcp_adv_win_scale" },
382    { CTL_INT, NET_TCP_TW_REUSE, "tcp_tw_reuse" },
383    { CTL_INT, NET_TCP_FRTO, "tcp_frto" },
384    { CTL_INT, NET_TCP_FRTO_RESPONSE, "tcp_frto_response" },
385    { CTL_INT, NET_TCP_LOW_LATENCY, "tcp_low_latency" },
386    { CTL_INT, NET_TCP_NO_METRICS_SAVE, "tcp_no_metrics_save" },
387    { CTL_INT, NET_TCP_MODERATE_RCVBUF, "tcp_moderate_rcvbuf" },
388    { CTL_INT, NET_TCP_TSO_WIN_DIVISOR, "tcp_tso_win_divisor" },
389    { CTL_STR, NET_TCP_CONG_CONTROL, "tcp_congestion_control" },
390    { CTL_INT, NET_TCP_MTU_PROBING, "tcp_mtu_probing" },
391    { CTL_INT, NET_TCP_BASE_MSS, "tcp_base_mss" },
392    { CTL_INT, NET_IPV4_TCP_WORKAROUND_SIGNED_WINDOWS, "tcp_workaround_signed_windows" },
393    { CTL_INT, NET_TCP_DMA_COPYBREAK, "tcp_dma_copybreak" },
394    { CTL_INT, NET_TCP_SLOW_START_AFTER_IDLE, "tcp_slow_start_after_idle" },
395    { CTL_INT, NET_CIPSOV4_CACHE_ENABLE, "cipso_cache_enable" },
396    { CTL_INT, NET_CIPSOV4_CACHE_BUCKET_SIZE, "cipso_cache_bucket_size" },
397    { CTL_INT, NET_CIPSOV4_RBM_OPTFMT, "cipso_rbm_optfmt" },
398    { CTL_INT, NET_CIPSOV4_RBM_STRICTVALID, "cipso_rbm_strictvalid" },
399    /* NET_TCP_AVAIL_CONG_CONTROL "tcp_available_congestion_control" no longer used */
400    { CTL_STR, NET_TCP_ALLOWED_CONG_CONTROL, "tcp_allowed_congestion_control" },
401    { CTL_INT, NET_TCP_MAX_SSTHRESH, "tcp_max_ssthresh" },
402
403    { CTL_INT, NET_IPV4_ICMP_ECHO_IGNORE_ALL, "icmp_echo_ignore_all" },
404    { CTL_INT, NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS, "icmp_echo_ignore_broadcasts" },
405    { CTL_INT, NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES, "icmp_ignore_bogus_error_responses" },
406    { CTL_INT, NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR, "icmp_errors_use_inbound_ifaddr" },
407    { CTL_INT, NET_IPV4_ICMP_RATELIMIT, "icmp_ratelimit" },
408    { CTL_INT, NET_IPV4_ICMP_RATEMASK, "icmp_ratemask" },
409
410    { CTL_INT, NET_IPV4_IPFRAG_HIGH_THRESH, "ipfrag_high_thresh" },
411    { CTL_INT, NET_IPV4_IPFRAG_LOW_THRESH, "ipfrag_low_thresh" },
412    { CTL_INT, NET_IPV4_IPFRAG_TIME, "ipfrag_time" },
413
414    { CTL_INT, NET_IPV4_IPFRAG_SECRET_INTERVAL, "ipfrag_secret_interval" },
415    /* NET_IPV4_IPFRAG_MAX_DIST "ipfrag_max_dist" no longer used */
416
417    { CTL_INT, 2088 /* NET_IPQ_QMAX */, "ip_queue_maxlen" },
418
419    /* NET_TCP_DEFAULT_WIN_SCALE unused */
420    /* NET_TCP_BIC_BETA unused */
421    /* NET_IPV4_TCP_MAX_KA_PROBES unused */
422    /* NET_IPV4_IP_MASQ_DEBUG unused */
423    /* NET_TCP_SYN_TAILDROP unused */
424    /* NET_IPV4_ICMP_SOURCEQUENCH_RATE unused */
425    /* NET_IPV4_ICMP_DESTUNREACH_RATE unused */
426    /* NET_IPV4_ICMP_TIMEEXCEED_RATE unused */
427    /* NET_IPV4_ICMP_PARAMPROB_RATE unused */
428    /* NET_IPV4_ICMP_ECHOREPLY_RATE unused */
429    /* NET_IPV4_ALWAYS_DEFRAG unused */
430    {}
431};
432
433static const struct bin_table bin_net_ipx_table[] = {
434    { CTL_INT, NET_IPX_PPROP_BROADCASTING, "ipx_pprop_broadcasting" },
435    /* NET_IPX_FORWARDING unused */
436    {}
437};
438
439static const struct bin_table bin_net_atalk_table[] = {
440    { CTL_INT, NET_ATALK_AARP_EXPIRY_TIME, "aarp-expiry-time" },
441    { CTL_INT, NET_ATALK_AARP_TICK_TIME, "aarp-tick-time" },
442    { CTL_INT, NET_ATALK_AARP_RETRANSMIT_LIMIT, "aarp-retransmit-limit" },
443    { CTL_INT, NET_ATALK_AARP_RESOLVE_TIME, "aarp-resolve-time" },
444    {},
445};
446
447static const struct bin_table bin_net_netrom_table[] = {
448    { CTL_INT, NET_NETROM_DEFAULT_PATH_QUALITY, "default_path_quality" },
449    { CTL_INT, NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER, "obsolescence_count_initialiser" },
450    { CTL_INT, NET_NETROM_NETWORK_TTL_INITIALISER, "network_ttl_initialiser" },
451    { CTL_INT, NET_NETROM_TRANSPORT_TIMEOUT, "transport_timeout" },
452    { CTL_INT, NET_NETROM_TRANSPORT_MAXIMUM_TRIES, "transport_maximum_tries" },
453    { CTL_INT, NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY, "transport_acknowledge_delay" },
454    { CTL_INT, NET_NETROM_TRANSPORT_BUSY_DELAY, "transport_busy_delay" },
455    { CTL_INT, NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE, "transport_requested_window_size" },
456    { CTL_INT, NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT, "transport_no_activity_timeout" },
457    { CTL_INT, NET_NETROM_ROUTING_CONTROL, "routing_control" },
458    { CTL_INT, NET_NETROM_LINK_FAILS_COUNT, "link_fails_count" },
459    { CTL_INT, NET_NETROM_RESET, "reset" },
460    {}
461};
462
463static const struct bin_table bin_net_ax25_param_table[] = {
464    { CTL_INT, NET_AX25_IP_DEFAULT_MODE, "ip_default_mode" },
465    { CTL_INT, NET_AX25_DEFAULT_MODE, "ax25_default_mode" },
466    { CTL_INT, NET_AX25_BACKOFF_TYPE, "backoff_type" },
467    { CTL_INT, NET_AX25_CONNECT_MODE, "connect_mode" },
468    { CTL_INT, NET_AX25_STANDARD_WINDOW, "standard_window_size" },
469    { CTL_INT, NET_AX25_EXTENDED_WINDOW, "extended_window_size" },
470    { CTL_INT, NET_AX25_T1_TIMEOUT, "t1_timeout" },
471    { CTL_INT, NET_AX25_T2_TIMEOUT, "t2_timeout" },
472    { CTL_INT, NET_AX25_T3_TIMEOUT, "t3_timeout" },
473    { CTL_INT, NET_AX25_IDLE_TIMEOUT, "idle_timeout" },
474    { CTL_INT, NET_AX25_N2, "maximum_retry_count" },
475    { CTL_INT, NET_AX25_PACLEN, "maximum_packet_length" },
476    { CTL_INT, NET_AX25_PROTOCOL, "protocol" },
477    { CTL_INT, NET_AX25_DAMA_SLAVE_TIMEOUT, "dama_slave_timeout" },
478    {}
479};
480
481static const struct bin_table bin_net_ax25_table[] = {
482    { CTL_DIR, 0, NULL, bin_net_ax25_param_table },
483    {}
484};
485
486static const struct bin_table bin_net_rose_table[] = {
487    { CTL_INT, NET_ROSE_RESTART_REQUEST_TIMEOUT, "restart_request_timeout" },
488    { CTL_INT, NET_ROSE_CALL_REQUEST_TIMEOUT, "call_request_timeout" },
489    { CTL_INT, NET_ROSE_RESET_REQUEST_TIMEOUT, "reset_request_timeout" },
490    { CTL_INT, NET_ROSE_CLEAR_REQUEST_TIMEOUT, "clear_request_timeout" },
491    { CTL_INT, NET_ROSE_ACK_HOLD_BACK_TIMEOUT, "acknowledge_hold_back_timeout" },
492    { CTL_INT, NET_ROSE_ROUTING_CONTROL, "routing_control" },
493    { CTL_INT, NET_ROSE_LINK_FAIL_TIMEOUT, "link_fail_timeout" },
494    { CTL_INT, NET_ROSE_MAX_VCS, "maximum_virtual_circuits" },
495    { CTL_INT, NET_ROSE_WINDOW_SIZE, "window_size" },
496    { CTL_INT, NET_ROSE_NO_ACTIVITY_TIMEOUT, "no_activity_timeout" },
497    {}
498};
499
500static const struct bin_table bin_net_ipv6_conf_var_table[] = {
501    { CTL_INT, NET_IPV6_FORWARDING, "forwarding" },
502    { CTL_INT, NET_IPV6_HOP_LIMIT, "hop_limit" },
503    { CTL_INT, NET_IPV6_MTU, "mtu" },
504    { CTL_INT, NET_IPV6_ACCEPT_RA, "accept_ra" },
505    { CTL_INT, NET_IPV6_ACCEPT_REDIRECTS, "accept_redirects" },
506    { CTL_INT, NET_IPV6_AUTOCONF, "autoconf" },
507    { CTL_INT, NET_IPV6_DAD_TRANSMITS, "dad_transmits" },
508    { CTL_INT, NET_IPV6_RTR_SOLICITS, "router_solicitations" },
509    { CTL_INT, NET_IPV6_RTR_SOLICIT_INTERVAL, "router_solicitation_interval" },
510    { CTL_INT, NET_IPV6_RTR_SOLICIT_DELAY, "router_solicitation_delay" },
511    { CTL_INT, NET_IPV6_USE_TEMPADDR, "use_tempaddr" },
512    { CTL_INT, NET_IPV6_TEMP_VALID_LFT, "temp_valid_lft" },
513    { CTL_INT, NET_IPV6_TEMP_PREFERED_LFT, "temp_prefered_lft" },
514    { CTL_INT, NET_IPV6_REGEN_MAX_RETRY, "regen_max_retry" },
515    { CTL_INT, NET_IPV6_MAX_DESYNC_FACTOR, "max_desync_factor" },
516    { CTL_INT, NET_IPV6_MAX_ADDRESSES, "max_addresses" },
517    { CTL_INT, NET_IPV6_FORCE_MLD_VERSION, "force_mld_version" },
518    { CTL_INT, NET_IPV6_ACCEPT_RA_DEFRTR, "accept_ra_defrtr" },
519    { CTL_INT, NET_IPV6_ACCEPT_RA_PINFO, "accept_ra_pinfo" },
520    { CTL_INT, NET_IPV6_ACCEPT_RA_RTR_PREF, "accept_ra_rtr_pref" },
521    { CTL_INT, NET_IPV6_RTR_PROBE_INTERVAL, "router_probe_interval" },
522    { CTL_INT, NET_IPV6_ACCEPT_RA_RT_INFO_MAX_PLEN, "accept_ra_rt_info_max_plen" },
523    { CTL_INT, NET_IPV6_PROXY_NDP, "proxy_ndp" },
524    { CTL_INT, NET_IPV6_ACCEPT_SOURCE_ROUTE, "accept_source_route" },
525    {}
526};
527
528static const struct bin_table bin_net_ipv6_conf_table[] = {
529    { CTL_DIR, NET_PROTO_CONF_ALL, "all", bin_net_ipv6_conf_var_table },
530    { CTL_DIR, NET_PROTO_CONF_DEFAULT, "default", bin_net_ipv6_conf_var_table },
531    { CTL_DIR, 0, NULL, bin_net_ipv6_conf_var_table },
532    {}
533};
534
535static const struct bin_table bin_net_ipv6_route_table[] = {
536    /* NET_IPV6_ROUTE_FLUSH "flush" no longer used */
537    { CTL_INT, NET_IPV6_ROUTE_GC_THRESH, "gc_thresh" },
538    { CTL_INT, NET_IPV6_ROUTE_MAX_SIZE, "max_size" },
539    { CTL_INT, NET_IPV6_ROUTE_GC_MIN_INTERVAL, "gc_min_interval" },
540    { CTL_INT, NET_IPV6_ROUTE_GC_TIMEOUT, "gc_timeout" },
541    { CTL_INT, NET_IPV6_ROUTE_GC_INTERVAL, "gc_interval" },
542    { CTL_INT, NET_IPV6_ROUTE_GC_ELASTICITY, "gc_elasticity" },
543    { CTL_INT, NET_IPV6_ROUTE_MTU_EXPIRES, "mtu_expires" },
544    { CTL_INT, NET_IPV6_ROUTE_MIN_ADVMSS, "min_adv_mss" },
545    { CTL_INT, NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS, "gc_min_interval_ms" },
546    {}
547};
548
549static const struct bin_table bin_net_ipv6_icmp_table[] = {
550    { CTL_INT, NET_IPV6_ICMP_RATELIMIT, "ratelimit" },
551    {}
552};
553
554static const struct bin_table bin_net_ipv6_table[] = {
555    { CTL_DIR, NET_IPV6_CONF, "conf", bin_net_ipv6_conf_table },
556    { CTL_DIR, NET_IPV6_NEIGH, "neigh", bin_net_neigh_table },
557    { CTL_DIR, NET_IPV6_ROUTE, "route", bin_net_ipv6_route_table },
558    { CTL_DIR, NET_IPV6_ICMP, "icmp", bin_net_ipv6_icmp_table },
559    { CTL_INT, NET_IPV6_BINDV6ONLY, "bindv6only" },
560    { CTL_INT, NET_IPV6_IP6FRAG_HIGH_THRESH, "ip6frag_high_thresh" },
561    { CTL_INT, NET_IPV6_IP6FRAG_LOW_THRESH, "ip6frag_low_thresh" },
562    { CTL_INT, NET_IPV6_IP6FRAG_TIME, "ip6frag_time" },
563    { CTL_INT, NET_IPV6_IP6FRAG_SECRET_INTERVAL, "ip6frag_secret_interval" },
564    { CTL_INT, NET_IPV6_MLD_MAX_MSF, "mld_max_msf" },
565    { CTL_INT, 2088 /* IPQ_QMAX */, "ip6_queue_maxlen" },
566    {}
567};
568
569static const struct bin_table bin_net_x25_table[] = {
570    { CTL_INT, NET_X25_RESTART_REQUEST_TIMEOUT, "restart_request_timeout" },
571    { CTL_INT, NET_X25_CALL_REQUEST_TIMEOUT, "call_request_timeout" },
572    { CTL_INT, NET_X25_RESET_REQUEST_TIMEOUT, "reset_request_timeout" },
573    { CTL_INT, NET_X25_CLEAR_REQUEST_TIMEOUT, "clear_request_timeout" },
574    { CTL_INT, NET_X25_ACK_HOLD_BACK_TIMEOUT, "acknowledgement_hold_back_timeout" },
575    { CTL_INT, NET_X25_FORWARD, "x25_forward" },
576    {}
577};
578
579static const struct bin_table bin_net_tr_table[] = {
580    { CTL_INT, NET_TR_RIF_TIMEOUT, "rif_timeout" },
581    {}
582};
583
584
585static const struct bin_table bin_net_decnet_conf_vars[] = {
586    { CTL_INT, NET_DECNET_CONF_DEV_FORWARDING, "forwarding" },
587    { CTL_INT, NET_DECNET_CONF_DEV_PRIORITY, "priority" },
588    { CTL_INT, NET_DECNET_CONF_DEV_T2, "t2" },
589    { CTL_INT, NET_DECNET_CONF_DEV_T3, "t3" },
590    {}
591};
592
593static const struct bin_table bin_net_decnet_conf[] = {
594    { CTL_DIR, NET_DECNET_CONF_ETHER, "ethernet", bin_net_decnet_conf_vars },
595    { CTL_DIR, NET_DECNET_CONF_GRE, "ipgre", bin_net_decnet_conf_vars },
596    { CTL_DIR, NET_DECNET_CONF_X25, "x25", bin_net_decnet_conf_vars },
597    { CTL_DIR, NET_DECNET_CONF_PPP, "ppp", bin_net_decnet_conf_vars },
598    { CTL_DIR, NET_DECNET_CONF_DDCMP, "ddcmp", bin_net_decnet_conf_vars },
599    { CTL_DIR, NET_DECNET_CONF_LOOPBACK, "loopback", bin_net_decnet_conf_vars },
600    { CTL_DIR, 0, NULL, bin_net_decnet_conf_vars },
601    {}
602};
603
604static const struct bin_table bin_net_decnet_table[] = {
605    { CTL_DIR, NET_DECNET_CONF, "conf", bin_net_decnet_conf },
606    { CTL_DNADR, NET_DECNET_NODE_ADDRESS, "node_address" },
607    { CTL_STR, NET_DECNET_NODE_NAME, "node_name" },
608    { CTL_STR, NET_DECNET_DEFAULT_DEVICE, "default_device" },
609    { CTL_INT, NET_DECNET_TIME_WAIT, "time_wait" },
610    { CTL_INT, NET_DECNET_DN_COUNT, "dn_count" },
611    { CTL_INT, NET_DECNET_DI_COUNT, "di_count" },
612    { CTL_INT, NET_DECNET_DR_COUNT, "dr_count" },
613    { CTL_INT, NET_DECNET_DST_GC_INTERVAL, "dst_gc_interval" },
614    { CTL_INT, NET_DECNET_NO_FC_MAX_CWND, "no_fc_max_cwnd" },
615    { CTL_INT, NET_DECNET_MEM, "decnet_mem" },
616    { CTL_INT, NET_DECNET_RMEM, "decnet_rmem" },
617    { CTL_INT, NET_DECNET_WMEM, "decnet_wmem" },
618    { CTL_INT, NET_DECNET_DEBUG_LEVEL, "debug" },
619    {}
620};
621
622static const struct bin_table bin_net_sctp_table[] = {
623    { CTL_INT, NET_SCTP_RTO_INITIAL, "rto_initial" },
624    { CTL_INT, NET_SCTP_RTO_MIN, "rto_min" },
625    { CTL_INT, NET_SCTP_RTO_MAX, "rto_max" },
626    { CTL_INT, NET_SCTP_RTO_ALPHA, "rto_alpha_exp_divisor" },
627    { CTL_INT, NET_SCTP_RTO_BETA, "rto_beta_exp_divisor" },
628    { CTL_INT, NET_SCTP_VALID_COOKIE_LIFE, "valid_cookie_life" },
629    { CTL_INT, NET_SCTP_ASSOCIATION_MAX_RETRANS, "association_max_retrans" },
630    { CTL_INT, NET_SCTP_PATH_MAX_RETRANS, "path_max_retrans" },
631    { CTL_INT, NET_SCTP_MAX_INIT_RETRANSMITS, "max_init_retransmits" },
632    { CTL_INT, NET_SCTP_HB_INTERVAL, "hb_interval" },
633    { CTL_INT, NET_SCTP_PRESERVE_ENABLE, "cookie_preserve_enable" },
634    { CTL_INT, NET_SCTP_MAX_BURST, "max_burst" },
635    { CTL_INT, NET_SCTP_ADDIP_ENABLE, "addip_enable" },
636    { CTL_INT, NET_SCTP_PRSCTP_ENABLE, "prsctp_enable" },
637    { CTL_INT, NET_SCTP_SNDBUF_POLICY, "sndbuf_policy" },
638    { CTL_INT, NET_SCTP_SACK_TIMEOUT, "sack_timeout" },
639    { CTL_INT, NET_SCTP_RCVBUF_POLICY, "rcvbuf_policy" },
640    {}
641};
642
643static const struct bin_table bin_net_llc_llc2_timeout_table[] = {
644    { CTL_INT, NET_LLC2_ACK_TIMEOUT, "ack" },
645    { CTL_INT, NET_LLC2_P_TIMEOUT, "p" },
646    { CTL_INT, NET_LLC2_REJ_TIMEOUT, "rej" },
647    { CTL_INT, NET_LLC2_BUSY_TIMEOUT, "busy" },
648    {}
649};
650
651static const struct bin_table bin_net_llc_station_table[] = {
652    { CTL_INT, NET_LLC_STATION_ACK_TIMEOUT, "ack_timeout" },
653    {}
654};
655
656static const struct bin_table bin_net_llc_llc2_table[] = {
657    { CTL_DIR, NET_LLC2, "timeout", bin_net_llc_llc2_timeout_table },
658    {}
659};
660
661static const struct bin_table bin_net_llc_table[] = {
662    { CTL_DIR, NET_LLC2, "llc2", bin_net_llc_llc2_table },
663    { CTL_DIR, NET_LLC_STATION, "station", bin_net_llc_station_table },
664    {}
665};
666
667static const struct bin_table bin_net_netfilter_table[] = {
668    { CTL_INT, NET_NF_CONNTRACK_MAX, "nf_conntrack_max" },
669    /* NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT "nf_conntrack_tcp_timeout_syn_sent" no longer used */
670    /* NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV "nf_conntrack_tcp_timeout_syn_recv" no longer used */
671    /* NET_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED "nf_conntrack_tcp_timeout_established" no longer used */
672    /* NET_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT "nf_conntrack_tcp_timeout_fin_wait" no longer used */
673    /* NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT "nf_conntrack_tcp_timeout_close_wait" no longer used */
674    /* NET_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK "nf_conntrack_tcp_timeout_last_ack" no longer used */
675    /* NET_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT "nf_conntrack_tcp_timeout_time_wait" no longer used */
676    /* NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE "nf_conntrack_tcp_timeout_close" no longer used */
677    /* NET_NF_CONNTRACK_UDP_TIMEOUT "nf_conntrack_udp_timeout" no longer used */
678    /* NET_NF_CONNTRACK_UDP_TIMEOUT_STREAM "nf_conntrack_udp_timeout_stream" no longer used */
679    /* NET_NF_CONNTRACK_ICMP_TIMEOUT "nf_conntrack_icmp_timeout" no longer used */
680    /* NET_NF_CONNTRACK_GENERIC_TIMEOUT "nf_conntrack_generic_timeout" no longer used */
681    { CTL_INT, NET_NF_CONNTRACK_BUCKETS, "nf_conntrack_buckets" },
682    { CTL_INT, NET_NF_CONNTRACK_LOG_INVALID, "nf_conntrack_log_invalid" },
683    /* NET_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS "nf_conntrack_tcp_timeout_max_retrans" no longer used */
684    { CTL_INT, NET_NF_CONNTRACK_TCP_LOOSE, "nf_conntrack_tcp_loose" },
685    { CTL_INT, NET_NF_CONNTRACK_TCP_BE_LIBERAL, "nf_conntrack_tcp_be_liberal" },
686    { CTL_INT, NET_NF_CONNTRACK_TCP_MAX_RETRANS, "nf_conntrack_tcp_max_retrans" },
687    /* NET_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED "nf_conntrack_sctp_timeout_closed" no longer used */
688    /* NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT "nf_conntrack_sctp_timeout_cookie_wait" no longer used */
689    /* NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED "nf_conntrack_sctp_timeout_cookie_echoed" no longer used */
690    /* NET_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED "nf_conntrack_sctp_timeout_established" no longer used */
691    /* NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT "nf_conntrack_sctp_timeout_shutdown_sent" no longer used */
692    /* NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD "nf_conntrack_sctp_timeout_shutdown_recd" no longer used */
693    /* NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT "nf_conntrack_sctp_timeout_shutdown_ack_sent" no longer used */
694    { CTL_INT, NET_NF_CONNTRACK_COUNT, "nf_conntrack_count" },
695    /* NET_NF_CONNTRACK_ICMPV6_TIMEOUT "nf_conntrack_icmpv6_timeout" no longer used */
696    /* NET_NF_CONNTRACK_FRAG6_TIMEOUT "nf_conntrack_frag6_timeout" no longer used */
697    { CTL_INT, NET_NF_CONNTRACK_FRAG6_LOW_THRESH, "nf_conntrack_frag6_low_thresh" },
698    { CTL_INT, NET_NF_CONNTRACK_FRAG6_HIGH_THRESH, "nf_conntrack_frag6_high_thresh" },
699    { CTL_INT, NET_NF_CONNTRACK_CHECKSUM, "nf_conntrack_checksum" },
700
701    {}
702};
703
704static const struct bin_table bin_net_irda_table[] = {
705    { CTL_INT, NET_IRDA_DISCOVERY, "discovery" },
706    { CTL_STR, NET_IRDA_DEVNAME, "devname" },
707    { CTL_INT, NET_IRDA_DEBUG, "debug" },
708    { CTL_INT, NET_IRDA_FAST_POLL, "fast_poll_increase" },
709    { CTL_INT, NET_IRDA_DISCOVERY_SLOTS, "discovery_slots" },
710    { CTL_INT, NET_IRDA_DISCOVERY_TIMEOUT, "discovery_timeout" },
711    { CTL_INT, NET_IRDA_SLOT_TIMEOUT, "slot_timeout" },
712    { CTL_INT, NET_IRDA_MAX_BAUD_RATE, "max_baud_rate" },
713    { CTL_INT, NET_IRDA_MIN_TX_TURN_TIME, "min_tx_turn_time" },
714    { CTL_INT, NET_IRDA_MAX_TX_DATA_SIZE, "max_tx_data_size" },
715    { CTL_INT, NET_IRDA_MAX_TX_WINDOW, "max_tx_window" },
716    { CTL_INT, NET_IRDA_MAX_NOREPLY_TIME, "max_noreply_time" },
717    { CTL_INT, NET_IRDA_WARN_NOREPLY_TIME, "warn_noreply_time" },
718    { CTL_INT, NET_IRDA_LAP_KEEPALIVE_TIME, "lap_keepalive_time" },
719    {}
720};
721
722static const struct bin_table bin_net_table[] = {
723    { CTL_DIR, NET_CORE, "core", bin_net_core_table },
724    /* NET_ETHER not used */
725    /* NET_802 not used */
726    { CTL_DIR, NET_UNIX, "unix", bin_net_unix_table },
727    { CTL_DIR, NET_IPV4, "ipv4", bin_net_ipv4_table },
728    { CTL_DIR, NET_IPX, "ipx", bin_net_ipx_table },
729    { CTL_DIR, NET_ATALK, "appletalk", bin_net_atalk_table },
730    { CTL_DIR, NET_NETROM, "netrom", bin_net_netrom_table },
731    { CTL_DIR, NET_AX25, "ax25", bin_net_ax25_table },
732    /* NET_BRIDGE "bridge" no longer used */
733    { CTL_DIR, NET_ROSE, "rose", bin_net_rose_table },
734    { CTL_DIR, NET_IPV6, "ipv6", bin_net_ipv6_table },
735    { CTL_DIR, NET_X25, "x25", bin_net_x25_table },
736    { CTL_DIR, NET_TR, "token-ring", bin_net_tr_table },
737    { CTL_DIR, NET_DECNET, "decnet", bin_net_decnet_table },
738    /* NET_ECONET not used */
739    { CTL_DIR, NET_SCTP, "sctp", bin_net_sctp_table },
740    { CTL_DIR, NET_LLC, "llc", bin_net_llc_table },
741    { CTL_DIR, NET_NETFILTER, "netfilter", bin_net_netfilter_table },
742    /* NET_DCCP "dccp" no longer used */
743    { CTL_DIR, NET_IRDA, "irda", bin_net_irda_table },
744    { CTL_INT, 2089, "nf_conntrack_max" },
745    {}
746};
747
748static const struct bin_table bin_fs_quota_table[] = {
749    { CTL_INT, FS_DQ_LOOKUPS, "lookups" },
750    { CTL_INT, FS_DQ_DROPS, "drops" },
751    { CTL_INT, FS_DQ_READS, "reads" },
752    { CTL_INT, FS_DQ_WRITES, "writes" },
753    { CTL_INT, FS_DQ_CACHE_HITS, "cache_hits" },
754    { CTL_INT, FS_DQ_ALLOCATED, "allocated_dquots" },
755    { CTL_INT, FS_DQ_FREE, "free_dquots" },
756    { CTL_INT, FS_DQ_SYNCS, "syncs" },
757    { CTL_INT, FS_DQ_WARNINGS, "warnings" },
758    {}
759};
760
761static const struct bin_table bin_fs_xfs_table[] = {
762    { CTL_INT, XFS_SGID_INHERIT, "irix_sgid_inherit" },
763    { CTL_INT, XFS_SYMLINK_MODE, "irix_symlink_mode" },
764    { CTL_INT, XFS_PANIC_MASK, "panic_mask" },
765
766    { CTL_INT, XFS_ERRLEVEL, "error_level" },
767    { CTL_INT, XFS_SYNCD_TIMER, "xfssyncd_centisecs" },
768    { CTL_INT, XFS_INHERIT_SYNC, "inherit_sync" },
769    { CTL_INT, XFS_INHERIT_NODUMP, "inherit_nodump" },
770    { CTL_INT, XFS_INHERIT_NOATIME, "inherit_noatime" },
771    { CTL_INT, XFS_BUF_TIMER, "xfsbufd_centisecs" },
772    { CTL_INT, XFS_BUF_AGE, "age_buffer_centisecs" },
773    { CTL_INT, XFS_INHERIT_NOSYM, "inherit_nosymlinks" },
774    { CTL_INT, XFS_ROTORSTEP, "rotorstep" },
775    { CTL_INT, XFS_INHERIT_NODFRG, "inherit_nodefrag" },
776    { CTL_INT, XFS_FILESTREAM_TIMER, "filestream_centisecs" },
777    { CTL_INT, XFS_STATS_CLEAR, "stats_clear" },
778    {}
779};
780
781static const struct bin_table bin_fs_ocfs2_nm_table[] = {
782    { CTL_STR, 1, "hb_ctl_path" },
783    {}
784};
785
786static const struct bin_table bin_fs_ocfs2_table[] = {
787    { CTL_DIR, 1, "nm", bin_fs_ocfs2_nm_table },
788    {}
789};
790
791static const struct bin_table bin_inotify_table[] = {
792    { CTL_INT, INOTIFY_MAX_USER_INSTANCES, "max_user_instances" },
793    { CTL_INT, INOTIFY_MAX_USER_WATCHES, "max_user_watches" },
794    { CTL_INT, INOTIFY_MAX_QUEUED_EVENTS, "max_queued_events" },
795    {}
796};
797
798static const struct bin_table bin_fs_table[] = {
799    { CTL_INT, FS_NRINODE, "inode-nr" },
800    { CTL_INT, FS_STATINODE, "inode-state" },
801    /* FS_MAXINODE unused */
802    /* FS_NRDQUOT unused */
803    /* FS_MAXDQUOT unused */
804    /* FS_NRFILE "file-nr" no longer used */
805    { CTL_INT, FS_MAXFILE, "file-max" },
806    { CTL_INT, FS_DENTRY, "dentry-state" },
807    /* FS_NRSUPER unused */
808    /* FS_MAXUPSER unused */
809    { CTL_INT, FS_OVERFLOWUID, "overflowuid" },
810    { CTL_INT, FS_OVERFLOWGID, "overflowgid" },
811    { CTL_INT, FS_LEASES, "leases-enable" },
812    { CTL_INT, FS_DIR_NOTIFY, "dir-notify-enable" },
813    { CTL_INT, FS_LEASE_TIME, "lease-break-time" },
814    { CTL_DIR, FS_DQSTATS, "quota", bin_fs_quota_table },
815    { CTL_DIR, FS_XFS, "xfs", bin_fs_xfs_table },
816    { CTL_ULONG, FS_AIO_NR, "aio-nr" },
817    { CTL_ULONG, FS_AIO_MAX_NR, "aio-max-nr" },
818    { CTL_DIR, FS_INOTIFY, "inotify", bin_inotify_table },
819    { CTL_DIR, FS_OCFS2, "ocfs2", bin_fs_ocfs2_table },
820    { CTL_INT, KERN_SETUID_DUMPABLE, "suid_dumpable" },
821    {}
822};
823
824static const struct bin_table bin_ipmi_table[] = {
825    { CTL_INT, DEV_IPMI_POWEROFF_POWERCYCLE, "poweroff_powercycle" },
826    {}
827};
828
829static const struct bin_table bin_mac_hid_files[] = {
830    /* DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES unused */
831    /* DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES unused */
832    { CTL_INT, DEV_MAC_HID_MOUSE_BUTTON_EMULATION, "mouse_button_emulation" },
833    { CTL_INT, DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE, "mouse_button2_keycode" },
834    { CTL_INT, DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE, "mouse_button3_keycode" },
835    /* DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES unused */
836    {}
837};
838
839static const struct bin_table bin_raid_table[] = {
840    { CTL_INT, DEV_RAID_SPEED_LIMIT_MIN, "speed_limit_min" },
841    { CTL_INT, DEV_RAID_SPEED_LIMIT_MAX, "speed_limit_max" },
842    {}
843};
844
845static const struct bin_table bin_scsi_table[] = {
846    { CTL_INT, DEV_SCSI_LOGGING_LEVEL, "logging_level" },
847    {}
848};
849
850static const struct bin_table bin_dev_table[] = {
851    /* DEV_CDROM "cdrom" no longer used */
852    /* DEV_HWMON unused */
853    /* DEV_PARPORT "parport" no longer used */
854    { CTL_DIR, DEV_RAID, "raid", bin_raid_table },
855    { CTL_DIR, DEV_MAC_HID, "mac_hid", bin_mac_hid_files },
856    { CTL_DIR, DEV_SCSI, "scsi", bin_scsi_table },
857    { CTL_DIR, DEV_IPMI, "ipmi", bin_ipmi_table },
858    {}
859};
860
861static const struct bin_table bin_bus_isa_table[] = {
862    { CTL_INT, BUS_ISA_MEM_BASE, "membase" },
863    { CTL_INT, BUS_ISA_PORT_BASE, "portbase" },
864    { CTL_INT, BUS_ISA_PORT_SHIFT, "portshift" },
865    {}
866};
867
868static const struct bin_table bin_bus_table[] = {
869    { CTL_DIR, CTL_BUS_ISA, "isa", bin_bus_isa_table },
870    {}
871};
872
873
874static const struct bin_table bin_s390dbf_table[] = {
875    { CTL_INT, 5678 /* CTL_S390DBF_STOPPABLE */, "debug_stoppable" },
876    { CTL_INT, 5679 /* CTL_S390DBF_ACTIVE */, "debug_active" },
877    {}
878};
879
880static const struct bin_table bin_sunrpc_table[] = {
881    /* CTL_RPCDEBUG "rpc_debug" no longer used */
882    /* CTL_NFSDEBUG "nfs_debug" no longer used */
883    /* CTL_NFSDDEBUG "nfsd_debug" no longer used */
884    /* CTL_NLMDEBUG "nlm_debug" no longer used */
885
886    { CTL_INT, CTL_SLOTTABLE_UDP, "udp_slot_table_entries" },
887    { CTL_INT, CTL_SLOTTABLE_TCP, "tcp_slot_table_entries" },
888    { CTL_INT, CTL_MIN_RESVPORT, "min_resvport" },
889    { CTL_INT, CTL_MAX_RESVPORT, "max_resvport" },
890    {}
891};
892
893static const struct bin_table bin_pm_table[] = {
894    /* frv specific */
895    /* 1 == CTL_PM_SUSPEND "suspend" no longer used" */
896    { CTL_INT, 2 /* CTL_PM_CMODE */, "cmode" },
897    { CTL_INT, 3 /* CTL_PM_P0 */, "p0" },
898    { CTL_INT, 4 /* CTL_PM_CM */, "cm" },
899    {}
900};
901
902static const struct bin_table bin_root_table[] = {
903    { CTL_DIR, CTL_KERN, "kernel", bin_kern_table },
904    { CTL_DIR, CTL_VM, "vm", bin_vm_table },
905    { CTL_DIR, CTL_NET, "net", bin_net_table },
906    /* CTL_PROC not used */
907    { CTL_DIR, CTL_FS, "fs", bin_fs_table },
908    /* CTL_DEBUG "debug" no longer used */
909    { CTL_DIR, CTL_DEV, "dev", bin_dev_table },
910    { CTL_DIR, CTL_BUS, "bus", bin_bus_table },
911    { CTL_DIR, CTL_ABI, "abi" },
912    /* CTL_CPU not used */
913    /* CTL_ARLAN "arlan" no longer used */
914    { CTL_DIR, CTL_S390DBF, "s390dbf", bin_s390dbf_table },
915    { CTL_DIR, CTL_SUNRPC, "sunrpc", bin_sunrpc_table },
916    { CTL_DIR, CTL_PM, "pm", bin_pm_table },
917    {}
918};
919
920static ssize_t bin_dir(struct file *file,
921    void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
922{
923    return -ENOTDIR;
924}
925
926
927static ssize_t bin_string(struct file *file,
928    void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
929{
930    ssize_t result, copied = 0;
931
932    if (oldval && oldlen) {
933        char __user *lastp;
934        loff_t pos = 0;
935        int ch;
936
937        result = vfs_read(file, oldval, oldlen, &pos);
938        if (result < 0)
939            goto out;
940
941        copied = result;
942        lastp = oldval + copied - 1;
943
944        result = -EFAULT;
945        if (get_user(ch, lastp))
946            goto out;
947
948        /* Trim off the trailing newline */
949        if (ch == '\n') {
950            result = -EFAULT;
951            if (put_user('\0', lastp))
952                goto out;
953            copied -= 1;
954        }
955    }
956
957    if (newval && newlen) {
958        loff_t pos = 0;
959
960        result = vfs_write(file, newval, newlen, &pos);
961        if (result < 0)
962            goto out;
963    }
964
965    result = copied;
966out:
967    return result;
968}
969
970static ssize_t bin_intvec(struct file *file,
971    void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
972{
973    ssize_t copied = 0;
974    char *buffer;
975    ssize_t result;
976
977    result = -ENOMEM;
978    buffer = kmalloc(BUFSZ, GFP_KERNEL);
979    if (!buffer)
980        goto out;
981
982    if (oldval && oldlen) {
983        unsigned __user *vec = oldval;
984        size_t length = oldlen / sizeof(*vec);
985        char *str, *end;
986        int i;
987
988        result = kernel_read(file, 0, buffer, BUFSZ - 1);
989        if (result < 0)
990            goto out_kfree;
991
992        str = buffer;
993        end = str + result;
994        *end++ = '\0';
995        for (i = 0; i < length; i++) {
996            unsigned long value;
997
998            value = simple_strtoul(str, &str, 10);
999            while (isspace(*str))
1000                str++;
1001            
1002            result = -EFAULT;
1003            if (put_user(value, vec + i))
1004                goto out_kfree;
1005
1006            copied += sizeof(*vec);
1007            if (!isdigit(*str))
1008                break;
1009        }
1010    }
1011
1012    if (newval && newlen) {
1013        unsigned __user *vec = newval;
1014        size_t length = newlen / sizeof(*vec);
1015        char *str, *end;
1016        int i;
1017
1018        str = buffer;
1019        end = str + BUFSZ;
1020        for (i = 0; i < length; i++) {
1021            unsigned long value;
1022
1023            result = -EFAULT;
1024            if (get_user(value, vec + i))
1025                goto out_kfree;
1026
1027            str += scnprintf(str, end - str, "%lu\t", value);
1028        }
1029
1030        result = kernel_write(file, buffer, str - buffer, 0);
1031        if (result < 0)
1032            goto out_kfree;
1033    }
1034    result = copied;
1035out_kfree:
1036    kfree(buffer);
1037out:
1038    return result;
1039}
1040
1041static ssize_t bin_ulongvec(struct file *file,
1042    void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1043{
1044    ssize_t copied = 0;
1045    char *buffer;
1046    ssize_t result;
1047
1048    result = -ENOMEM;
1049    buffer = kmalloc(BUFSZ, GFP_KERNEL);
1050    if (!buffer)
1051        goto out;
1052
1053    if (oldval && oldlen) {
1054        unsigned long __user *vec = oldval;
1055        size_t length = oldlen / sizeof(*vec);
1056        char *str, *end;
1057        int i;
1058
1059        result = kernel_read(file, 0, buffer, BUFSZ - 1);
1060        if (result < 0)
1061            goto out_kfree;
1062
1063        str = buffer;
1064        end = str + result;
1065        *end++ = '\0';
1066        for (i = 0; i < length; i++) {
1067            unsigned long value;
1068
1069            value = simple_strtoul(str, &str, 10);
1070            while (isspace(*str))
1071                str++;
1072            
1073            result = -EFAULT;
1074            if (put_user(value, vec + i))
1075                goto out_kfree;
1076
1077            copied += sizeof(*vec);
1078            if (!isdigit(*str))
1079                break;
1080        }
1081    }
1082
1083    if (newval && newlen) {
1084        unsigned long __user *vec = newval;
1085        size_t length = newlen / sizeof(*vec);
1086        char *str, *end;
1087        int i;
1088
1089        str = buffer;
1090        end = str + BUFSZ;
1091        for (i = 0; i < length; i++) {
1092            unsigned long value;
1093
1094            result = -EFAULT;
1095            if (get_user(value, vec + i))
1096                goto out_kfree;
1097
1098            str += scnprintf(str, end - str, "%lu\t", value);
1099        }
1100
1101        result = kernel_write(file, buffer, str - buffer, 0);
1102        if (result < 0)
1103            goto out_kfree;
1104    }
1105    result = copied;
1106out_kfree:
1107    kfree(buffer);
1108out:
1109    return result;
1110}
1111
1112static ssize_t bin_uuid(struct file *file,
1113    void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1114{
1115    ssize_t result, copied = 0;
1116
1117    /* Only supports reads */
1118    if (oldval && oldlen) {
1119        char buf[40], *str = buf;
1120        unsigned char uuid[16];
1121        int i;
1122
1123        result = kernel_read(file, 0, buf, sizeof(buf) - 1);
1124        if (result < 0)
1125            goto out;
1126
1127        buf[result] = '\0';
1128
1129        /* Convert the uuid to from a string to binary */
1130        for (i = 0; i < 16; i++) {
1131            result = -EIO;
1132            if (!isxdigit(str[0]) || !isxdigit(str[1]))
1133                goto out;
1134
1135            uuid[i] = (hex_to_bin(str[0]) << 4) |
1136                    hex_to_bin(str[1]);
1137            str += 2;
1138            if (*str == '-')
1139                str++;
1140        }
1141
1142        if (oldlen > 16)
1143            oldlen = 16;
1144
1145        result = -EFAULT;
1146        if (copy_to_user(oldval, uuid, oldlen))
1147            goto out;
1148
1149        copied = oldlen;
1150    }
1151    result = copied;
1152out:
1153    return result;
1154}
1155
1156static ssize_t bin_dn_node_address(struct file *file,
1157    void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1158{
1159    ssize_t result, copied = 0;
1160
1161    if (oldval && oldlen) {
1162        char buf[15], *nodep;
1163        unsigned long area, node;
1164        __le16 dnaddr;
1165
1166        result = kernel_read(file, 0, buf, sizeof(buf) - 1);
1167        if (result < 0)
1168            goto out;
1169
1170        buf[result] = '\0';
1171
1172        /* Convert the decnet address to binary */
1173        result = -EIO;
1174        nodep = strchr(buf, '.');
1175        if (!nodep)
1176            goto out;
1177        ++nodep;
1178
1179        area = simple_strtoul(buf, NULL, 10);
1180        node = simple_strtoul(nodep, NULL, 10);
1181
1182        result = -EIO;
1183        if ((area > 63)||(node > 1023))
1184            goto out;
1185
1186        dnaddr = cpu_to_le16((area << 10) | node);
1187
1188        result = -EFAULT;
1189        if (put_user(dnaddr, (__le16 __user *)oldval))
1190            goto out;
1191
1192        copied = sizeof(dnaddr);
1193    }
1194
1195    if (newval && newlen) {
1196        __le16 dnaddr;
1197        char buf[15];
1198        int len;
1199
1200        result = -EINVAL;
1201        if (newlen != sizeof(dnaddr))
1202            goto out;
1203
1204        result = -EFAULT;
1205        if (get_user(dnaddr, (__le16 __user *)newval))
1206            goto out;
1207
1208        len = scnprintf(buf, sizeof(buf), "%hu.%hu",
1209                le16_to_cpu(dnaddr) >> 10,
1210                le16_to_cpu(dnaddr) & 0x3ff);
1211
1212        result = kernel_write(file, buf, len, 0);
1213        if (result < 0)
1214            goto out;
1215    }
1216
1217    result = copied;
1218out:
1219    return result;
1220}
1221
1222static const struct bin_table *get_sysctl(const int *name, int nlen, char *path)
1223{
1224    const struct bin_table *table = &bin_root_table[0];
1225    int ctl_name;
1226
1227    /* The binary sysctl tables have a small maximum depth so
1228     * there is no danger of overflowing our path as it PATH_MAX
1229     * bytes long.
1230     */
1231    memcpy(path, "sys/", 4);
1232    path += 4;
1233
1234repeat:
1235    if (!nlen)
1236        return ERR_PTR(-ENOTDIR);
1237    ctl_name = *name;
1238    name++;
1239    nlen--;
1240    for ( ; table->convert; table++) {
1241        int len = 0;
1242
1243        /*
1244         * For a wild card entry map from ifindex to network
1245         * device name.
1246         */
1247        if (!table->ctl_name) {
1248#ifdef CONFIG_NET
1249            struct net *net = current->nsproxy->net_ns;
1250            struct net_device *dev;
1251            dev = dev_get_by_index(net, ctl_name);
1252            if (dev) {
1253                len = strlen(dev->name);
1254                memcpy(path, dev->name, len);
1255                dev_put(dev);
1256            }
1257#endif
1258        /* Use the well known sysctl number to proc name mapping */
1259        } else if (ctl_name == table->ctl_name) {
1260            len = strlen(table->procname);
1261            memcpy(path, table->procname, len);
1262        }
1263        if (len) {
1264            path += len;
1265            if (table->child) {
1266                *path++ = '/';
1267                table = table->child;
1268                goto repeat;
1269            }
1270            *path = '\0';
1271            return table;
1272        }
1273    }
1274    return ERR_PTR(-ENOTDIR);
1275}
1276
1277static char *sysctl_getname(const int *name, int nlen, const struct bin_table **tablep)
1278{
1279    char *tmp, *result;
1280
1281    result = ERR_PTR(-ENOMEM);
1282    tmp = __getname();
1283    if (tmp) {
1284        const struct bin_table *table = get_sysctl(name, nlen, tmp);
1285        result = tmp;
1286        *tablep = table;
1287        if (IS_ERR(table)) {
1288            __putname(tmp);
1289            result = ERR_CAST(table);
1290        }
1291    }
1292    return result;
1293}
1294
1295static ssize_t binary_sysctl(const int *name, int nlen,
1296    void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1297{
1298    const struct bin_table *table = NULL;
1299    struct vfsmount *mnt;
1300    struct file *file;
1301    ssize_t result;
1302    char *pathname;
1303    int flags;
1304
1305    pathname = sysctl_getname(name, nlen, &table);
1306    result = PTR_ERR(pathname);
1307    if (IS_ERR(pathname))
1308        goto out;
1309
1310    /* How should the sysctl be accessed? */
1311    if (oldval && oldlen && newval && newlen) {
1312        flags = O_RDWR;
1313    } else if (newval && newlen) {
1314        flags = O_WRONLY;
1315    } else if (oldval && oldlen) {
1316        flags = O_RDONLY;
1317    } else {
1318        result = 0;
1319        goto out_putname;
1320    }
1321
1322    mnt = task_active_pid_ns(current)->proc_mnt;
1323    file = file_open_root(mnt->mnt_root, mnt, pathname, flags);
1324    result = PTR_ERR(file);
1325    if (IS_ERR(file))
1326        goto out_putname;
1327
1328    result = table->convert(file, oldval, oldlen, newval, newlen);
1329
1330    fput(file);
1331out_putname:
1332    __putname(pathname);
1333out:
1334    return result;
1335}
1336
1337
1338#else /* CONFIG_SYSCTL_SYSCALL */
1339
1340static ssize_t binary_sysctl(const int *name, int nlen,
1341    void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1342{
1343    return -ENOSYS;
1344}
1345
1346#endif /* CONFIG_SYSCTL_SYSCALL */
1347
1348
1349static void deprecated_sysctl_warning(const int *name, int nlen)
1350{
1351    int i;
1352
1353    /*
1354     * CTL_KERN/KERN_VERSION is used by older glibc and cannot
1355     * ever go away.
1356     */
1357    if (name[0] == CTL_KERN && name[1] == KERN_VERSION)
1358        return;
1359
1360    if (printk_ratelimit()) {
1361        printk(KERN_INFO
1362            "warning: process `%s' used the deprecated sysctl "
1363            "system call with ", current->comm);
1364        for (i = 0; i < nlen; i++)
1365            printk("%d.", name[i]);
1366        printk("\n");
1367    }
1368    return;
1369}
1370
1371#define WARN_ONCE_HASH_BITS 8
1372#define WARN_ONCE_HASH_SIZE (1<<WARN_ONCE_HASH_BITS)
1373
1374static DECLARE_BITMAP(warn_once_bitmap, WARN_ONCE_HASH_SIZE);
1375
1376#define FNV32_OFFSET 2166136261U
1377#define FNV32_PRIME 0x01000193
1378
1379/*
1380 * Print each legacy sysctl (approximately) only once.
1381 * To avoid making the tables non-const use a external
1382 * hash-table instead.
1383 * Worst case hash collision: 6, but very rarely.
1384 * NOTE! We don't use the SMP-safe bit tests. We simply
1385 * don't care enough.
1386 */
1387static void warn_on_bintable(const int *name, int nlen)
1388{
1389    int i;
1390    u32 hash = FNV32_OFFSET;
1391
1392    for (i = 0; i < nlen; i++)
1393        hash = (hash ^ name[i]) * FNV32_PRIME;
1394    hash %= WARN_ONCE_HASH_SIZE;
1395    if (__test_and_set_bit(hash, warn_once_bitmap))
1396        return;
1397    deprecated_sysctl_warning(name, nlen);
1398}
1399
1400static ssize_t do_sysctl(int __user *args_name, int nlen,
1401    void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1402{
1403    int name[CTL_MAXNAME];
1404    int i;
1405
1406    /* Check args->nlen. */
1407    if (nlen < 0 || nlen > CTL_MAXNAME)
1408        return -ENOTDIR;
1409    /* Read in the sysctl name for simplicity */
1410    for (i = 0; i < nlen; i++)
1411        if (get_user(name[i], args_name + i))
1412            return -EFAULT;
1413
1414    warn_on_bintable(name, nlen);
1415
1416    return binary_sysctl(name, nlen, oldval, oldlen, newval, newlen);
1417}
1418
1419SYSCALL_DEFINE1(sysctl, struct __sysctl_args __user *, args)
1420{
1421    struct __sysctl_args tmp;
1422    size_t oldlen = 0;
1423    ssize_t result;
1424
1425    if (copy_from_user(&tmp, args, sizeof(tmp)))
1426        return -EFAULT;
1427
1428    if (tmp.oldval && !tmp.oldlenp)
1429        return -EFAULT;
1430
1431    if (tmp.oldlenp && get_user(oldlen, tmp.oldlenp))
1432        return -EFAULT;
1433
1434    result = do_sysctl(tmp.name, tmp.nlen, tmp.oldval, oldlen,
1435               tmp.newval, tmp.newlen);
1436
1437    if (result >= 0) {
1438        oldlen = result;
1439        result = 0;
1440    }
1441
1442    if (tmp.oldlenp && put_user(oldlen, tmp.oldlenp))
1443        return -EFAULT;
1444
1445    return result;
1446}
1447
1448
1449#ifdef CONFIG_COMPAT
1450
1451struct compat_sysctl_args {
1452    compat_uptr_t name;
1453    int nlen;
1454    compat_uptr_t oldval;
1455    compat_uptr_t oldlenp;
1456    compat_uptr_t newval;
1457    compat_size_t newlen;
1458    compat_ulong_t __unused[4];
1459};
1460
1461COMPAT_SYSCALL_DEFINE1(sysctl, struct compat_sysctl_args __user *, args)
1462{
1463    struct compat_sysctl_args tmp;
1464    compat_size_t __user *compat_oldlenp;
1465    size_t oldlen = 0;
1466    ssize_t result;
1467
1468    if (copy_from_user(&tmp, args, sizeof(tmp)))
1469        return -EFAULT;
1470
1471    if (tmp.oldval && !tmp.oldlenp)
1472        return -EFAULT;
1473
1474    compat_oldlenp = compat_ptr(tmp.oldlenp);
1475    if (compat_oldlenp && get_user(oldlen, compat_oldlenp))
1476        return -EFAULT;
1477
1478    result = do_sysctl(compat_ptr(tmp.name), tmp.nlen,
1479               compat_ptr(tmp.oldval), oldlen,
1480               compat_ptr(tmp.newval), tmp.newlen);
1481
1482    if (result >= 0) {
1483        oldlen = result;
1484        result = 0;
1485    }
1486
1487    if (compat_oldlenp && put_user(oldlen, compat_oldlenp))
1488        return -EFAULT;
1489
1490    return result;
1491}
1492
1493#endif /* CONFIG_COMPAT */
1494

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