1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/stat.h>
3 #include <linux/sysctl.h>
4 #include "../fs/xfs/xfs_sysctl.h"
5 #include <linux/sunrpc/debug.h>
6 #include <linux/string.h>
7 #include <linux/syscalls.h>
8 #include <linux/namei.h>
9 #include <linux/mount.h>
10 #include <linux/fs.h>
11 #include <linux/nsproxy.h>
12 #include <linux/pid_namespace.h>
13 #include <linux/file.h>
14 #include <linux/ctype.h>
15 #include <linux/netdevice.h>
16 #include <linux/kernel.h>
17 #include <linux/uuid.h>
18 #include <linux/slab.h>
19 #include <linux/compat.h>
20
21 #ifdef CONFIG_SYSCTL_SYSCALL
22
23 struct bin_table;
24 typedef ssize_t bin_convert_t(struct file *file,
25 void __user *oldval, size_t oldlen, void __user *newval, size_t newlen);
26
27 static bin_convert_t bin_dir;
28 static bin_convert_t bin_string;
29 static bin_convert_t bin_intvec;
30 static bin_convert_t bin_ulongvec;
31 static bin_convert_t bin_uuid;
32 static bin_convert_t bin_dn_node_address;
33
34 #define CTL_DIR bin_dir
35 #define CTL_STR bin_string
36 #define CTL_INT bin_intvec
37 #define CTL_ULONG bin_ulongvec
38 #define CTL_UUID bin_uuid
39 #define CTL_DNADR bin_dn_node_address
40
41 #define BUFSZ 256
42
43 struct bin_table {
44 bin_convert_t *convert;
45 int ctl_name;
46 const char *procname;
47 const struct bin_table *child;
48 };
49
50 static const struct bin_table bin_random_table[] = {
51 { CTL_INT, RANDOM_POOLSIZE, "poolsize" },
52 { CTL_INT, RANDOM_ENTROPY_COUNT, "entropy_avail" },
53 { CTL_INT, RANDOM_READ_THRESH, "read_wakeup_threshold" },
54 { CTL_INT, RANDOM_WRITE_THRESH, "write_wakeup_threshold" },
55 { CTL_UUID, RANDOM_BOOT_ID, "boot_id" },
56 { CTL_UUID, RANDOM_UUID, "uuid" },
57 {}
58 };
59
60 static const struct bin_table bin_pty_table[] = {
61 { CTL_INT, PTY_MAX, "max" },
62 { CTL_INT, PTY_NR, "nr" },
63 {}
64 };
65
66 static const struct bin_table bin_kern_table[] = {
67 { CTL_STR, KERN_OSTYPE, "ostype" },
68 { CTL_STR, KERN_OSRELEASE, "osrelease" },
69 /* KERN_OSREV not used */
70 { CTL_STR, KERN_VERSION, "version" },
71 /* KERN_SECUREMASK not used */
72 /* KERN_PROF not used */
73 { CTL_STR, KERN_NODENAME, "hostname" },
74 { CTL_STR, KERN_DOMAINNAME, "domainname" },
75
76 { CTL_INT, KERN_PANIC, "panic" },
77 { CTL_INT, KERN_REALROOTDEV, "real-root-dev" },
78
79 { CTL_STR, KERN_SPARC_REBOOT, "reboot-cmd" },
80 { CTL_INT, KERN_CTLALTDEL, "ctrl-alt-del" },
81 { CTL_INT, KERN_PRINTK, "printk" },
82
83 /* KERN_NAMETRANS not used */
84 /* KERN_PPC_HTABRECLAIM not used */
85 /* KERN_PPC_ZEROPAGED not used */
86 { CTL_INT, KERN_PPC_POWERSAVE_NAP, "powersave-nap" },
87
88 { CTL_STR, KERN_MODPROBE, "modprobe" },
89 { CTL_INT, KERN_SG_BIG_BUFF, "sg-big-buff" },
90 { CTL_INT, KERN_ACCT, "acct" },
91 /* KERN_PPC_L2CR "l2cr" no longer used */
92
93 /* KERN_RTSIGNR not used */
94 /* KERN_RTSIGMAX not used */
95
96 { CTL_ULONG, KERN_SHMMAX, "shmmax" },
97 { CTL_INT, KERN_MSGMAX, "msgmax" },
98 { CTL_INT, KERN_MSGMNB, "msgmnb" },
99 /* KERN_MSGPOOL not used*/
100 { CTL_INT, KERN_SYSRQ, "sysrq" },
101 { CTL_INT, KERN_MAX_THREADS, "threads-max" },
102 { CTL_DIR, KERN_RANDOM, "random", bin_random_table },
103 { CTL_ULONG, KERN_SHMALL, "shmall" },
104 { CTL_INT, KERN_MSGMNI, "msgmni" },
105 { CTL_INT, KERN_SEM, "sem" },
106 { CTL_INT, KERN_SPARC_STOP_A, "stop-a" },
107 { CTL_INT, KERN_SHMMNI, "shmmni" },
108
109 { CTL_INT, KERN_OVERFLOWUID, "overflowuid" },
110 { CTL_INT, KERN_OVERFLOWGID, "overflowgid" },
111
112 { CTL_STR, KERN_HOTPLUG, "hotplug", },
113 { CTL_INT, KERN_IEEE_EMULATION_WARNINGS, "ieee_emulation_warnings" },
114
115 { CTL_INT, KERN_S390_USER_DEBUG_LOGGING, "userprocess_debug" },
116 { CTL_INT, KERN_CORE_USES_PID, "core_uses_pid" },
117 /* KERN_TAINTED "tainted" no longer used */
118 { CTL_INT, KERN_CADPID, "cad_pid" },
119 { CTL_INT, KERN_PIDMAX, "pid_max" },
120 { CTL_STR, KERN_CORE_PATTERN, "core_pattern" },
121 { CTL_INT, KERN_PANIC_ON_OOPS, "panic_on_oops" },
122 { CTL_INT, KERN_HPPA_PWRSW, "soft-power" },
123 { CTL_INT, KERN_HPPA_UNALIGNED, "unaligned-trap" },
124
125 { CTL_INT, KERN_PRINTK_RATELIMIT, "printk_ratelimit" },
126 { CTL_INT, KERN_PRINTK_RATELIMIT_BURST, "printk_ratelimit_burst" },
127
128 { CTL_DIR, KERN_PTY, "pty", bin_pty_table },
129 { CTL_INT, KERN_NGROUPS_MAX, "ngroups_max" },
130 { CTL_INT, KERN_SPARC_SCONS_PWROFF, "scons-poweroff" },
131 /* KERN_HZ_TIMER "hz_timer" no longer used */
132 { CTL_INT, KERN_UNKNOWN_NMI_PANIC, "unknown_nmi_panic" },
133 { CTL_INT, KERN_BOOTLOADER_TYPE, "bootloader_type" },
134 { CTL_INT, KERN_RANDOMIZE, "randomize_va_space" },
135
136 { CTL_INT, KERN_SPIN_RETRY, "spin_retry" },
137 /* KERN_ACPI_VIDEO_FLAGS "acpi_video_flags" no longer used */
138 { CTL_INT, KERN_IA64_UNALIGNED, "ignore-unaligned-usertrap" },
139 { CTL_INT, KERN_COMPAT_LOG, "compat-log" },
140 { CTL_INT, KERN_MAX_LOCK_DEPTH, "max_lock_depth" },
141 { CTL_INT, KERN_PANIC_ON_NMI, "panic_on_unrecovered_nmi" },
142 { CTL_INT, KERN_PANIC_ON_WARN, "panic_on_warn" },
143 { CTL_ULONG, KERN_PANIC_PRINT, "panic_print" },
144 {}
145 };
146
147 static const struct bin_table bin_vm_table[] = {
148 { CTL_INT, VM_OVERCOMMIT_MEMORY, "overcommit_memory" },
149 { CTL_INT, VM_PAGE_CLUSTER, "page-cluster" },
150 { CTL_INT, VM_DIRTY_BACKGROUND, "dirty_background_ratio" },
151 { CTL_INT, VM_DIRTY_RATIO, "dirty_ratio" },
152 /* VM_DIRTY_WB_CS "dirty_writeback_centisecs" no longer used */
153 /* VM_DIRTY_EXPIRE_CS "dirty_expire_centisecs" no longer used */
154 /* VM_NR_PDFLUSH_THREADS "nr_pdflush_threads" no longer used */
155 { CTL_INT, VM_OVERCOMMIT_RATIO, "overcommit_ratio" },
156 /* VM_PAGEBUF unused */
157 /* VM_HUGETLB_PAGES "nr_hugepages" no longer used */
158 { CTL_INT, VM_SWAPPINESS, "swappiness" },
159 { CTL_INT, VM_LOWMEM_RESERVE_RATIO, "lowmem_reserve_ratio" },
160 { CTL_INT, VM_MIN_FREE_KBYTES, "min_free_kbytes" },
161 { CTL_INT, VM_MAX_MAP_COUNT, "max_map_count" },
162 { CTL_INT, VM_LAPTOP_MODE, "laptop_mode" },
163 { CTL_INT, VM_BLOCK_DUMP, "block_dump" },
164 { CTL_INT, VM_HUGETLB_GROUP, "hugetlb_shm_group" },
165 { CTL_INT, VM_VFS_CACHE_PRESSURE, "vfs_cache_pressure" },
166 { CTL_INT, VM_LEGACY_VA_LAYOUT, "legacy_va_layout" },
167 /* VM_SWAP_TOKEN_TIMEOUT unused */
168 { CTL_INT, VM_DROP_PAGECACHE, "drop_caches" },
169 { CTL_INT, VM_PERCPU_PAGELIST_FRACTION, "percpu_pagelist_fraction" },
170 { CTL_INT, VM_ZONE_RECLAIM_MODE, "zone_reclaim_mode" },
171 { CTL_INT, VM_MIN_UNMAPPED, "min_unmapped_ratio" },
172 { CTL_INT, VM_PANIC_ON_OOM, "panic_on_oom" },
173 { CTL_INT, VM_VDSO_ENABLED, "vdso_enabled" },
174 { CTL_INT, VM_MIN_SLAB, "min_slab_ratio" },
175
176 {}
177 };
178
179 static const struct bin_table bin_net_core_table[] = {
180 { CTL_INT, NET_CORE_WMEM_MAX, "wmem_max" },
181 { CTL_INT, NET_CORE_RMEM_MAX, "rmem_max" },
182 { CTL_INT, NET_CORE_WMEM_DEFAULT, "wmem_default" },
183 { CTL_INT, NET_CORE_RMEM_DEFAULT, "rmem_default" },
184 /* NET_CORE_DESTROY_DELAY unused */
185 { CTL_INT, NET_CORE_MAX_BACKLOG, "netdev_max_backlog" },
186 /* NET_CORE_FASTROUTE unused */
187 { CTL_INT, NET_CORE_MSG_COST, "message_cost" },
188 { CTL_INT, NET_CORE_MSG_BURST, "message_burst" },
189 { CTL_INT, NET_CORE_OPTMEM_MAX, "optmem_max" },
190 /* NET_CORE_HOT_LIST_LENGTH unused */
191 /* NET_CORE_DIVERT_VERSION unused */
192 /* NET_CORE_NO_CONG_THRESH unused */
193 /* NET_CORE_NO_CONG unused */
194 /* NET_CORE_LO_CONG unused */
195 /* NET_CORE_MOD_CONG unused */
196 { CTL_INT, NET_CORE_DEV_WEIGHT, "dev_weight" },
197 { CTL_INT, NET_CORE_SOMAXCONN, "somaxconn" },
198 { CTL_INT, NET_CORE_BUDGET, "netdev_budget" },
199 { CTL_INT, NET_CORE_AEVENT_ETIME, "xfrm_aevent_etime" },
200 { CTL_INT, NET_CORE_AEVENT_RSEQTH, "xfrm_aevent_rseqth" },
201 { CTL_INT, NET_CORE_WARNINGS, "warnings" },
202 {},
203 };
204
205 static const struct bin_table bin_net_unix_table[] = {
206 /* NET_UNIX_DESTROY_DELAY unused */
207 /* NET_UNIX_DELETE_DELAY unused */
208 { CTL_INT, NET_UNIX_MAX_DGRAM_QLEN, "max_dgram_qlen" },
209 {}
210 };
211
212 static const struct bin_table bin_net_ipv4_route_table[] = {
213 { CTL_INT, NET_IPV4_ROUTE_FLUSH, "flush" },
214 /* NET_IPV4_ROUTE_MIN_DELAY "min_delay" no longer used */
215 /* NET_IPV4_ROUTE_MAX_DELAY "max_delay" no longer used */
216 { CTL_INT, NET_IPV4_ROUTE_GC_THRESH, "gc_thresh" },
217 { CTL_INT, NET_IPV4_ROUTE_MAX_SIZE, "max_size" },
218 { CTL_INT, NET_IPV4_ROUTE_GC_MIN_INTERVAL, "gc_min_interval" },
219 { CTL_INT, NET_IPV4_ROUTE_GC_MIN_INTERVAL_MS, "gc_min_interval_ms" },
220 { CTL_INT, NET_IPV4_ROUTE_GC_TIMEOUT, "gc_timeout" },
221 /* NET_IPV4_ROUTE_GC_INTERVAL "gc_interval" no longer used */
222 { CTL_INT, NET_IPV4_ROUTE_REDIRECT_LOAD, "redirect_load" },
223 { CTL_INT, NET_IPV4_ROUTE_REDIRECT_NUMBER, "redirect_number" },
224 { CTL_INT, NET_IPV4_ROUTE_REDIRECT_SILENCE, "redirect_silence" },
225 { CTL_INT, NET_IPV4_ROUTE_ERROR_COST, "error_cost" },
226 { CTL_INT, NET_IPV4_ROUTE_ERROR_BURST, "error_burst" },
227 { CTL_INT, NET_IPV4_ROUTE_GC_ELASTICITY, "gc_elasticity" },
228 { CTL_INT, NET_IPV4_ROUTE_MTU_EXPIRES, "mtu_expires" },
229 { CTL_INT, NET_IPV4_ROUTE_MIN_PMTU, "min_pmtu" },
230 { CTL_INT, NET_IPV4_ROUTE_MIN_ADVMSS, "min_adv_mss" },
231 {}
232 };
233
234 static const struct bin_table bin_net_ipv4_conf_vars_table[] = {
235 { CTL_INT, NET_IPV4_CONF_FORWARDING, "forwarding" },
236 { CTL_INT, NET_IPV4_CONF_MC_FORWARDING, "mc_forwarding" },
237
238 { CTL_INT, NET_IPV4_CONF_ACCEPT_REDIRECTS, "accept_redirects" },
239 { CTL_INT, NET_IPV4_CONF_SECURE_REDIRECTS, "secure_redirects" },
240 { CTL_INT, NET_IPV4_CONF_SEND_REDIRECTS, "send_redirects" },
241 { CTL_INT, NET_IPV4_CONF_SHARED_MEDIA, "shared_media" },
242 { CTL_INT, NET_IPV4_CONF_RP_FILTER, "rp_filter" },
243 { CTL_INT, NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE, "accept_source_route" },
244 { CTL_INT, NET_IPV4_CONF_PROXY_ARP, "proxy_arp" },
245 { CTL_INT, NET_IPV4_CONF_MEDIUM_ID, "medium_id" },
246 { CTL_INT, NET_IPV4_CONF_BOOTP_RELAY, "bootp_relay" },
247 { CTL_INT, NET_IPV4_CONF_LOG_MARTIANS, "log_martians" },
248 { CTL_INT, NET_IPV4_CONF_TAG, "tag" },
249 { CTL_INT, NET_IPV4_CONF_ARPFILTER, "arp_filter" },
250 { CTL_INT, NET_IPV4_CONF_ARP_ANNOUNCE, "arp_announce" },
251 { CTL_INT, NET_IPV4_CONF_ARP_IGNORE, "arp_ignore" },
252 { CTL_INT, NET_IPV4_CONF_ARP_ACCEPT, "arp_accept" },
253 { CTL_INT, NET_IPV4_CONF_ARP_NOTIFY, "arp_notify" },
254
255 { CTL_INT, NET_IPV4_CONF_NOXFRM, "disable_xfrm" },
256 { CTL_INT, NET_IPV4_CONF_NOPOLICY, "disable_policy" },
257 { CTL_INT, NET_IPV4_CONF_FORCE_IGMP_VERSION, "force_igmp_version" },
258 { CTL_INT, NET_IPV4_CONF_PROMOTE_SECONDARIES, "promote_secondaries" },
259 {}
260 };
261
262 static const struct bin_table bin_net_ipv4_conf_table[] = {
263 { CTL_DIR, NET_PROTO_CONF_ALL, "all", bin_net_ipv4_conf_vars_table },
264 { CTL_DIR, NET_PROTO_CONF_DEFAULT, "default", bin_net_ipv4_conf_vars_table },
265 { CTL_DIR, 0, NULL, bin_net_ipv4_conf_vars_table },
266 {}
267 };
268
269 static const struct bin_table bin_net_neigh_vars_table[] = {
270 { CTL_INT, NET_NEIGH_MCAST_SOLICIT, "mcast_solicit" },
271 { CTL_INT, NET_NEIGH_UCAST_SOLICIT, "ucast_solicit" },
272 { CTL_INT, NET_NEIGH_APP_SOLICIT, "app_solicit" },
273 /* NET_NEIGH_RETRANS_TIME "retrans_time" no longer used */
274 { CTL_INT, NET_NEIGH_REACHABLE_TIME, "base_reachable_time" },
275 { CTL_INT, NET_NEIGH_DELAY_PROBE_TIME, "delay_first_probe_time" },
276 { CTL_INT, NET_NEIGH_GC_STALE_TIME, "gc_stale_time" },
277 { CTL_INT, NET_NEIGH_UNRES_QLEN, "unres_qlen" },
278 { CTL_INT, NET_NEIGH_PROXY_QLEN, "proxy_qlen" },
279 /* NET_NEIGH_ANYCAST_DELAY "anycast_delay" no longer used */
280 /* NET_NEIGH_PROXY_DELAY "proxy_delay" no longer used */
281 /* NET_NEIGH_LOCKTIME "locktime" no longer used */
282 { CTL_INT, NET_NEIGH_GC_INTERVAL, "gc_interval" },
283 { CTL_INT, NET_NEIGH_GC_THRESH1, "gc_thresh1" },
284 { CTL_INT, NET_NEIGH_GC_THRESH2, "gc_thresh2" },
285 { CTL_INT, NET_NEIGH_GC_THRESH3, "gc_thresh3" },
286 { CTL_INT, NET_NEIGH_RETRANS_TIME_MS, "retrans_time_ms" },
287 { CTL_INT, NET_NEIGH_REACHABLE_TIME_MS, "base_reachable_time_ms" },
288 {}
289 };
290
291 static const struct bin_table bin_net_neigh_table[] = {
292 { CTL_DIR, NET_PROTO_CONF_DEFAULT, "default", bin_net_neigh_vars_table },
293 { CTL_DIR, 0, NULL, bin_net_neigh_vars_table },
294 {}
295 };
296
297 static const struct bin_table bin_net_ipv4_netfilter_table[] = {
298 { CTL_INT, NET_IPV4_NF_CONNTRACK_MAX, "ip_conntrack_max" },
299
300 /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT "ip_conntrack_tcp_timeout_syn_sent" no longer used */
301 /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV "ip_conntrack_tcp_timeout_syn_recv" no longer used */
302 /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED "ip_conntrack_tcp_timeout_established" no longer used */
303 /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT "ip_conntrack_tcp_timeout_fin_wait" no longer used */
304 /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT "ip_conntrack_tcp_timeout_close_wait" no longer used */
305 /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK "ip_conntrack_tcp_timeout_last_ack" no longer used */
306 /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT "ip_conntrack_tcp_timeout_time_wait" no longer used */
307 /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE "ip_conntrack_tcp_timeout_close" no longer used */
308
309 /* NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT "ip_conntrack_udp_timeout" no longer used */
310 /* NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM "ip_conntrack_udp_timeout_stream" no longer used */
311 /* NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT "ip_conntrack_icmp_timeout" no longer used */
312 /* NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT "ip_conntrack_generic_timeout" no longer used */
313
314 { CTL_INT, NET_IPV4_NF_CONNTRACK_BUCKETS, "ip_conntrack_buckets" },
315 { CTL_INT, NET_IPV4_NF_CONNTRACK_LOG_INVALID, "ip_conntrack_log_invalid" },
316 /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS "ip_conntrack_tcp_timeout_max_retrans" no longer used */
317 { CTL_INT, NET_IPV4_NF_CONNTRACK_TCP_LOOSE, "ip_conntrack_tcp_loose" },
318 { CTL_INT, NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL, "ip_conntrack_tcp_be_liberal" },
319 { CTL_INT, NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS, "ip_conntrack_tcp_max_retrans" },
320
321 /* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED "ip_conntrack_sctp_timeout_closed" no longer used */
322 /* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT "ip_conntrack_sctp_timeout_cookie_wait" no longer used */
323 /* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED "ip_conntrack_sctp_timeout_cookie_echoed" no longer used */
324 /* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED "ip_conntrack_sctp_timeout_established" no longer used */
325 /* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT "ip_conntrack_sctp_timeout_shutdown_sent" no longer used */
326 /* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD "ip_conntrack_sctp_timeout_shutdown_recd" no longer used */
327 /* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT "ip_conntrack_sctp_timeout_shutdown_ack_sent" no longer used */
328
329 { CTL_INT, NET_IPV4_NF_CONNTRACK_COUNT, "ip_conntrack_count" },
330 { CTL_INT, NET_IPV4_NF_CONNTRACK_CHECKSUM, "ip_conntrack_checksum" },
331 {}
332 };
333
334 static const struct bin_table bin_net_ipv4_table[] = {
335 {CTL_INT, NET_IPV4_FORWARD, "ip_forward" },
336
337 { CTL_DIR, NET_IPV4_CONF, "conf", bin_net_ipv4_conf_table },
338 { CTL_DIR, NET_IPV4_NEIGH, "neigh", bin_net_neigh_table },
339 { CTL_DIR, NET_IPV4_ROUTE, "route", bin_net_ipv4_route_table },
340 /* NET_IPV4_FIB_HASH unused */
341 { CTL_DIR, NET_IPV4_NETFILTER, "netfilter", bin_net_ipv4_netfilter_table },
342
343 { CTL_INT, NET_IPV4_TCP_TIMESTAMPS, "tcp_timestamps" },
344 { CTL_INT, NET_IPV4_TCP_WINDOW_SCALING, "tcp_window_scaling" },
345 { CTL_INT, NET_IPV4_TCP_SACK, "tcp_sack" },
346 { CTL_INT, NET_IPV4_TCP_RETRANS_COLLAPSE, "tcp_retrans_collapse" },
347 { CTL_INT, NET_IPV4_DEFAULT_TTL, "ip_default_ttl" },
348 /* NET_IPV4_AUTOCONFIG unused */
349 { CTL_INT, NET_IPV4_NO_PMTU_DISC, "ip_no_pmtu_disc" },
350 { CTL_INT, NET_IPV4_NONLOCAL_BIND, "ip_nonlocal_bind" },
351 { CTL_INT, NET_IPV4_TCP_SYN_RETRIES, "tcp_syn_retries" },
352 { CTL_INT, NET_TCP_SYNACK_RETRIES, "tcp_synack_retries" },
353 { CTL_INT, NET_TCP_MAX_ORPHANS, "tcp_max_orphans" },
354 { CTL_INT, NET_TCP_MAX_TW_BUCKETS, "tcp_max_tw_buckets" },
355 { CTL_INT, NET_IPV4_DYNADDR, "ip_dynaddr" },
356 { CTL_INT, NET_IPV4_TCP_KEEPALIVE_TIME, "tcp_keepalive_time" },
357 { CTL_INT, NET_IPV4_TCP_KEEPALIVE_PROBES, "tcp_keepalive_probes" },
358 { CTL_INT, NET_IPV4_TCP_KEEPALIVE_INTVL, "tcp_keepalive_intvl" },
359 { CTL_INT, NET_IPV4_TCP_RETRIES1, "tcp_retries1" },
360 { CTL_INT, NET_IPV4_TCP_RETRIES2, "tcp_retries2" },
361 { CTL_INT, NET_IPV4_TCP_FIN_TIMEOUT, "tcp_fin_timeout" },
362 { CTL_INT, NET_TCP_SYNCOOKIES, "tcp_syncookies" },
363 { CTL_INT, NET_TCP_TW_RECYCLE, "tcp_tw_recycle" },
364 { CTL_INT, NET_TCP_ABORT_ON_OVERFLOW, "tcp_abort_on_overflow" },
365 { CTL_INT, NET_TCP_STDURG, "tcp_stdurg" },
366 { CTL_INT, NET_TCP_RFC1337, "tcp_rfc1337" },
367 { CTL_INT, NET_TCP_MAX_SYN_BACKLOG, "tcp_max_syn_backlog" },
368 { CTL_INT, NET_IPV4_LOCAL_PORT_RANGE, "ip_local_port_range" },
369 { CTL_INT, NET_IPV4_IGMP_MAX_MEMBERSHIPS, "igmp_max_memberships" },
370 { CTL_INT, NET_IPV4_IGMP_MAX_MSF, "igmp_max_msf" },
371 { CTL_INT, NET_IPV4_INET_PEER_THRESHOLD, "inet_peer_threshold" },
372 { CTL_INT, NET_IPV4_INET_PEER_MINTTL, "inet_peer_minttl" },
373 { CTL_INT, NET_IPV4_INET_PEER_MAXTTL, "inet_peer_maxttl" },
374 { CTL_INT, NET_IPV4_INET_PEER_GC_MINTIME, "inet_peer_gc_mintime" },
375 { CTL_INT, NET_IPV4_INET_PEER_GC_MAXTIME, "inet_peer_gc_maxtime" },
376 { CTL_INT, NET_TCP_ORPHAN_RETRIES, "tcp_orphan_retries" },
377 { CTL_INT, NET_TCP_FACK, "tcp_fack" },
378 { CTL_INT, NET_TCP_REORDERING, "tcp_reordering" },
379 { CTL_INT, NET_TCP_ECN, "tcp_ecn" },
380 { CTL_INT, NET_TCP_DSACK, "tcp_dsack" },
381 { CTL_INT, NET_TCP_MEM, "tcp_mem" },
382 { CTL_INT, NET_TCP_WMEM, "tcp_wmem" },
383 { CTL_INT, NET_TCP_RMEM, "tcp_rmem" },
384 { CTL_INT, NET_TCP_APP_WIN, "tcp_app_win" },
385 { CTL_INT, NET_TCP_ADV_WIN_SCALE, "tcp_adv_win_scale" },
386 { CTL_INT, NET_TCP_TW_REUSE, "tcp_tw_reuse" },
387 { CTL_INT, NET_TCP_FRTO, "tcp_frto" },
388 { CTL_INT, NET_TCP_FRTO_RESPONSE, "tcp_frto_response" },
389 { CTL_INT, NET_TCP_LOW_LATENCY, "tcp_low_latency" },
390 { CTL_INT, NET_TCP_NO_METRICS_SAVE, "tcp_no_metrics_save" },
391 { CTL_INT, NET_TCP_MODERATE_RCVBUF, "tcp_moderate_rcvbuf" },
392 { CTL_INT, NET_TCP_TSO_WIN_DIVISOR, "tcp_tso_win_divisor" },
393 { CTL_STR, NET_TCP_CONG_CONTROL, "tcp_congestion_control" },
394 { CTL_INT, NET_TCP_MTU_PROBING, "tcp_mtu_probing" },
395 { CTL_INT, NET_TCP_BASE_MSS, "tcp_base_mss" },
396 { CTL_INT, NET_IPV4_TCP_WORKAROUND_SIGNED_WINDOWS, "tcp_workaround_signed_windows" },
397 { CTL_INT, NET_TCP_SLOW_START_AFTER_IDLE, "tcp_slow_start_after_idle" },
398 { CTL_INT, NET_CIPSOV4_CACHE_ENABLE, "cipso_cache_enable" },
399 { CTL_INT, NET_CIPSOV4_CACHE_BUCKET_SIZE, "cipso_cache_bucket_size" },
400 { CTL_INT, NET_CIPSOV4_RBM_OPTFMT, "cipso_rbm_optfmt" },
401 { CTL_INT, NET_CIPSOV4_RBM_STRICTVALID, "cipso_rbm_strictvalid" },
402 /* NET_TCP_AVAIL_CONG_CONTROL "tcp_available_congestion_control" no longer used */
403 { CTL_STR, NET_TCP_ALLOWED_CONG_CONTROL, "tcp_allowed_congestion_control" },
404 { CTL_INT, NET_TCP_MAX_SSTHRESH, "tcp_max_ssthresh" },
405
406 { CTL_INT, NET_IPV4_ICMP_ECHO_IGNORE_ALL, "icmp_echo_ignore_all" },
407 { CTL_INT, NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS, "icmp_echo_ignore_broadcasts" },
408 { CTL_INT, NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES, "icmp_ignore_bogus_error_responses" },
409 { CTL_INT, NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR, "icmp_errors_use_inbound_ifaddr" },
410 { CTL_INT, NET_IPV4_ICMP_RATELIMIT, "icmp_ratelimit" },
411 { CTL_INT, NET_IPV4_ICMP_RATEMASK, "icmp_ratemask" },
412
413 { CTL_INT, NET_IPV4_IPFRAG_HIGH_THRESH, "ipfrag_high_thresh" },
414 { CTL_INT, NET_IPV4_IPFRAG_LOW_THRESH, "ipfrag_low_thresh" },
415 { CTL_INT, NET_IPV4_IPFRAG_TIME, "ipfrag_time" },
416
417 { CTL_INT, NET_IPV4_IPFRAG_SECRET_INTERVAL, "ipfrag_secret_interval" },
418 /* NET_IPV4_IPFRAG_MAX_DIST "ipfrag_max_dist" no longer used */
419
420 { CTL_INT, 2088 /* NET_IPQ_QMAX */, "ip_queue_maxlen" },
421
422 /* NET_TCP_DEFAULT_WIN_SCALE unused */
423 /* NET_TCP_BIC_BETA unused */
424 /* NET_IPV4_TCP_MAX_KA_PROBES unused */
425 /* NET_IPV4_IP_MASQ_DEBUG unused */
426 /* NET_TCP_SYN_TAILDROP unused */
427 /* NET_IPV4_ICMP_SOURCEQUENCH_RATE unused */
428 /* NET_IPV4_ICMP_DESTUNREACH_RATE unused */
429 /* NET_IPV4_ICMP_TIMEEXCEED_RATE unused */
430 /* NET_IPV4_ICMP_PARAMPROB_RATE unused */
431 /* NET_IPV4_ICMP_ECHOREPLY_RATE unused */
432 /* NET_IPV4_ALWAYS_DEFRAG unused */
433 {}
434 };
435
436 static const struct bin_table bin_net_ipx_table[] = {
437 { CTL_INT, NET_IPX_PPROP_BROADCASTING, "ipx_pprop_broadcasting" },
438 /* NET_IPX_FORWARDING unused */
439 {}
440 };
441
442 static const struct bin_table bin_net_atalk_table[] = {
443 { CTL_INT, NET_ATALK_AARP_EXPIRY_TIME, "aarp-expiry-time" },
444 { CTL_INT, NET_ATALK_AARP_TICK_TIME, "aarp-tick-time" },
445 { CTL_INT, NET_ATALK_AARP_RETRANSMIT_LIMIT, "aarp-retransmit-limit" },
446 { CTL_INT, NET_ATALK_AARP_RESOLVE_TIME, "aarp-resolve-time" },
447 {},
448 };
449
450 static const struct bin_table bin_net_netrom_table[] = {
451 { CTL_INT, NET_NETROM_DEFAULT_PATH_QUALITY, "default_path_quality" },
452 { CTL_INT, NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER, "obsolescence_count_initialiser" },
453 { CTL_INT, NET_NETROM_NETWORK_TTL_INITIALISER, "network_ttl_initialiser" },
454 { CTL_INT, NET_NETROM_TRANSPORT_TIMEOUT, "transport_timeout" },
455 { CTL_INT, NET_NETROM_TRANSPORT_MAXIMUM_TRIES, "transport_maximum_tries" },
456 { CTL_INT, NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY, "transport_acknowledge_delay" },
457 { CTL_INT, NET_NETROM_TRANSPORT_BUSY_DELAY, "transport_busy_delay" },
458 { CTL_INT, NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE, "transport_requested_window_size" },
459 { CTL_INT, NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT, "transport_no_activity_timeout" },
460 { CTL_INT, NET_NETROM_ROUTING_CONTROL, "routing_control" },
461 { CTL_INT, NET_NETROM_LINK_FAILS_COUNT, "link_fails_count" },
462 { CTL_INT, NET_NETROM_RESET, "reset" },
463 {}
464 };
465
466 static const struct bin_table bin_net_ax25_param_table[] = {
467 { CTL_INT, NET_AX25_IP_DEFAULT_MODE, "ip_default_mode" },
468 { CTL_INT, NET_AX25_DEFAULT_MODE, "ax25_default_mode" },
469 { CTL_INT, NET_AX25_BACKOFF_TYPE, "backoff_type" },
470 { CTL_INT, NET_AX25_CONNECT_MODE, "connect_mode" },
471 { CTL_INT, NET_AX25_STANDARD_WINDOW, "standard_window_size" },
472 { CTL_INT, NET_AX25_EXTENDED_WINDOW, "extended_window_size" },
473 { CTL_INT, NET_AX25_T1_TIMEOUT, "t1_timeout" },
474 { CTL_INT, NET_AX25_T2_TIMEOUT, "t2_timeout" },
475 { CTL_INT, NET_AX25_T3_TIMEOUT, "t3_timeout" },
476 { CTL_INT, NET_AX25_IDLE_TIMEOUT, "idle_timeout" },
477 { CTL_INT, NET_AX25_N2, "maximum_retry_count" },
478 { CTL_INT, NET_AX25_PACLEN, "maximum_packet_length" },
479 { CTL_INT, NET_AX25_PROTOCOL, "protocol" },
480 { CTL_INT, NET_AX25_DAMA_SLAVE_TIMEOUT, "dama_slave_timeout" },
481 {}
482 };
483
484 static const struct bin_table bin_net_ax25_table[] = {
485 { CTL_DIR, 0, NULL, bin_net_ax25_param_table },
486 {}
487 };
488
489 static const struct bin_table bin_net_rose_table[] = {
490 { CTL_INT, NET_ROSE_RESTART_REQUEST_TIMEOUT, "restart_request_timeout" },
491 { CTL_INT, NET_ROSE_CALL_REQUEST_TIMEOUT, "call_request_timeout" },
492 { CTL_INT, NET_ROSE_RESET_REQUEST_TIMEOUT, "reset_request_timeout" },
493 { CTL_INT, NET_ROSE_CLEAR_REQUEST_TIMEOUT, "clear_request_timeout" },
494 { CTL_INT, NET_ROSE_ACK_HOLD_BACK_TIMEOUT, "acknowledge_hold_back_timeout" },
495 { CTL_INT, NET_ROSE_ROUTING_CONTROL, "routing_control" },
496 { CTL_INT, NET_ROSE_LINK_FAIL_TIMEOUT, "link_fail_timeout" },
497 { CTL_INT, NET_ROSE_MAX_VCS, "maximum_virtual_circuits" },
498 { CTL_INT, NET_ROSE_WINDOW_SIZE, "window_size" },
499 { CTL_INT, NET_ROSE_NO_ACTIVITY_TIMEOUT, "no_activity_timeout" },
500 {}
501 };
502
503 static const struct bin_table bin_net_ipv6_conf_var_table[] = {
504 { CTL_INT, NET_IPV6_FORWARDING, "forwarding" },
505 { CTL_INT, NET_IPV6_HOP_LIMIT, "hop_limit" },
506 { CTL_INT, NET_IPV6_MTU, "mtu" },
507 { CTL_INT, NET_IPV6_ACCEPT_RA, "accept_ra" },
508 { CTL_INT, NET_IPV6_ACCEPT_REDIRECTS, "accept_redirects" },
509 { CTL_INT, NET_IPV6_AUTOCONF, "autoconf" },
510 { CTL_INT, NET_IPV6_DAD_TRANSMITS, "dad_transmits" },
511 { CTL_INT, NET_IPV6_RTR_SOLICITS, "router_solicitations" },
512 { CTL_INT, NET_IPV6_RTR_SOLICIT_INTERVAL, "router_solicitation_interval" },
513 { CTL_INT, NET_IPV6_RTR_SOLICIT_DELAY, "router_solicitation_delay" },
514 { CTL_INT, NET_IPV6_USE_TEMPADDR, "use_tempaddr" },
515 { CTL_INT, NET_IPV6_TEMP_VALID_LFT, "temp_valid_lft" },
516 { CTL_INT, NET_IPV6_TEMP_PREFERED_LFT, "temp_prefered_lft" },
517 { CTL_INT, NET_IPV6_REGEN_MAX_RETRY, "regen_max_retry" },
518 { CTL_INT, NET_IPV6_MAX_DESYNC_FACTOR, "max_desync_factor" },
519 { CTL_INT, NET_IPV6_MAX_ADDRESSES, "max_addresses" },
520 { CTL_INT, NET_IPV6_FORCE_MLD_VERSION, "force_mld_version" },
521 { CTL_INT, NET_IPV6_ACCEPT_RA_DEFRTR, "accept_ra_defrtr" },
522 { CTL_INT, NET_IPV6_ACCEPT_RA_PINFO, "accept_ra_pinfo" },
523 { CTL_INT, NET_IPV6_ACCEPT_RA_RTR_PREF, "accept_ra_rtr_pref" },
524 { CTL_INT, NET_IPV6_RTR_PROBE_INTERVAL, "router_probe_interval" },
525 { CTL_INT, NET_IPV6_ACCEPT_RA_RT_INFO_MAX_PLEN, "accept_ra_rt_info_max_plen" },
526 { CTL_INT, NET_IPV6_PROXY_NDP, "proxy_ndp" },
527 { CTL_INT, NET_IPV6_ACCEPT_SOURCE_ROUTE, "accept_source_route" },
528 { CTL_INT, NET_IPV6_ACCEPT_RA_FROM_LOCAL, "accept_ra_from_local" },
529 {}
530 };
531
532 static const struct bin_table bin_net_ipv6_conf_table[] = {
533 { CTL_DIR, NET_PROTO_CONF_ALL, "all", bin_net_ipv6_conf_var_table },
534 { CTL_DIR, NET_PROTO_CONF_DEFAULT, "default", bin_net_ipv6_conf_var_table },
535 { CTL_DIR, 0, NULL, bin_net_ipv6_conf_var_table },
536 {}
537 };
538
539 static const struct bin_table bin_net_ipv6_route_table[] = {
540 /* NET_IPV6_ROUTE_FLUSH "flush" no longer used */
541 { CTL_INT, NET_IPV6_ROUTE_GC_THRESH, "gc_thresh" },
542 { CTL_INT, NET_IPV6_ROUTE_MAX_SIZE, "max_size" },
543 { CTL_INT, NET_IPV6_ROUTE_GC_MIN_INTERVAL, "gc_min_interval" },
544 { CTL_INT, NET_IPV6_ROUTE_GC_TIMEOUT, "gc_timeout" },
545 { CTL_INT, NET_IPV6_ROUTE_GC_INTERVAL, "gc_interval" },
546 { CTL_INT, NET_IPV6_ROUTE_GC_ELASTICITY, "gc_elasticity" },
547 { CTL_INT, NET_IPV6_ROUTE_MTU_EXPIRES, "mtu_expires" },
548 { CTL_INT, NET_IPV6_ROUTE_MIN_ADVMSS, "min_adv_mss" },
549 { CTL_INT, NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS, "gc_min_interval_ms" },
550 {}
551 };
552
553 static const struct bin_table bin_net_ipv6_icmp_table[] = {
554 { CTL_INT, NET_IPV6_ICMP_RATELIMIT, "ratelimit" },
555 {}
556 };
557
558 static const struct bin_table bin_net_ipv6_table[] = {
559 { CTL_DIR, NET_IPV6_CONF, "conf", bin_net_ipv6_conf_table },
560 { CTL_DIR, NET_IPV6_NEIGH, "neigh", bin_net_neigh_table },
561 { CTL_DIR, NET_IPV6_ROUTE, "route", bin_net_ipv6_route_table },
562 { CTL_DIR, NET_IPV6_ICMP, "icmp", bin_net_ipv6_icmp_table },
563 { CTL_INT, NET_IPV6_BINDV6ONLY, "bindv6only" },
564 { CTL_INT, NET_IPV6_IP6FRAG_HIGH_THRESH, "ip6frag_high_thresh" },
565 { CTL_INT, NET_IPV6_IP6FRAG_LOW_THRESH, "ip6frag_low_thresh" },
566 { CTL_INT, NET_IPV6_IP6FRAG_TIME, "ip6frag_time" },
567 { CTL_INT, NET_IPV6_IP6FRAG_SECRET_INTERVAL, "ip6frag_secret_interval" },
568 { CTL_INT, NET_IPV6_MLD_MAX_MSF, "mld_max_msf" },
569 { CTL_INT, 2088 /* IPQ_QMAX */, "ip6_queue_maxlen" },
570 {}
571 };
572
573 static const struct bin_table bin_net_x25_table[] = {
574 { CTL_INT, NET_X25_RESTART_REQUEST_TIMEOUT, "restart_request_timeout" },
575 { CTL_INT, NET_X25_CALL_REQUEST_TIMEOUT, "call_request_timeout" },
576 { CTL_INT, NET_X25_RESET_REQUEST_TIMEOUT, "reset_request_timeout" },
577 { CTL_INT, NET_X25_CLEAR_REQUEST_TIMEOUT, "clear_request_timeout" },
578 { CTL_INT, NET_X25_ACK_HOLD_BACK_TIMEOUT, "acknowledgement_hold_back_timeout" },
579 { CTL_INT, NET_X25_FORWARD, "x25_forward" },
580 {}
581 };
582
583 static const struct bin_table bin_net_tr_table[] = {
584 { CTL_INT, NET_TR_RIF_TIMEOUT, "rif_timeout" },
585 {}
586 };
587
588
589 static const struct bin_table bin_net_decnet_conf_vars[] = {
590 { CTL_INT, NET_DECNET_CONF_DEV_FORWARDING, "forwarding" },
591 { CTL_INT, NET_DECNET_CONF_DEV_PRIORITY, "priority" },
592 { CTL_INT, NET_DECNET_CONF_DEV_T2, "t2" },
593 { CTL_INT, NET_DECNET_CONF_DEV_T3, "t3" },
594 {}
595 };
596
597 static const struct bin_table bin_net_decnet_conf[] = {
598 { CTL_DIR, NET_DECNET_CONF_ETHER, "ethernet", bin_net_decnet_conf_vars },
599 { CTL_DIR, NET_DECNET_CONF_GRE, "ipgre", bin_net_decnet_conf_vars },
600 { CTL_DIR, NET_DECNET_CONF_X25, "x25", bin_net_decnet_conf_vars },
601 { CTL_DIR, NET_DECNET_CONF_PPP, "ppp", bin_net_decnet_conf_vars },
602 { CTL_DIR, NET_DECNET_CONF_DDCMP, "ddcmp", bin_net_decnet_conf_vars },
603 { CTL_DIR, NET_DECNET_CONF_LOOPBACK, "loopback", bin_net_decnet_conf_vars },
604 { CTL_DIR, 0, NULL, bin_net_decnet_conf_vars },
605 {}
606 };
607
608 static const struct bin_table bin_net_decnet_table[] = {
609 { CTL_DIR, NET_DECNET_CONF, "conf", bin_net_decnet_conf },
610 { CTL_DNADR, NET_DECNET_NODE_ADDRESS, "node_address" },
611 { CTL_STR, NET_DECNET_NODE_NAME, "node_name" },
612 { CTL_STR, NET_DECNET_DEFAULT_DEVICE, "default_device" },
613 { CTL_INT, NET_DECNET_TIME_WAIT, "time_wait" },
614 { CTL_INT, NET_DECNET_DN_COUNT, "dn_count" },
615 { CTL_INT, NET_DECNET_DI_COUNT, "di_count" },
616 { CTL_INT, NET_DECNET_DR_COUNT, "dr_count" },
617 { CTL_INT, NET_DECNET_DST_GC_INTERVAL, "dst_gc_interval" },
618 { CTL_INT, NET_DECNET_NO_FC_MAX_CWND, "no_fc_max_cwnd" },
619 { CTL_INT, NET_DECNET_MEM, "decnet_mem" },
620 { CTL_INT, NET_DECNET_RMEM, "decnet_rmem" },
621 { CTL_INT, NET_DECNET_WMEM, "decnet_wmem" },
622 { CTL_INT, NET_DECNET_DEBUG_LEVEL, "debug" },
623 {}
624 };
625
626 static const struct bin_table bin_net_sctp_table[] = {
627 { CTL_INT, NET_SCTP_RTO_INITIAL, "rto_initial" },
628 { CTL_INT, NET_SCTP_RTO_MIN, "rto_min" },
629 { CTL_INT, NET_SCTP_RTO_MAX, "rto_max" },
630 { CTL_INT, NET_SCTP_RTO_ALPHA, "rto_alpha_exp_divisor" },
631 { CTL_INT, NET_SCTP_RTO_BETA, "rto_beta_exp_divisor" },
632 { CTL_INT, NET_SCTP_VALID_COOKIE_LIFE, "valid_cookie_life" },
633 { CTL_INT, NET_SCTP_ASSOCIATION_MAX_RETRANS, "association_max_retrans" },
634 { CTL_INT, NET_SCTP_PATH_MAX_RETRANS, "path_max_retrans" },
635 { CTL_INT, NET_SCTP_MAX_INIT_RETRANSMITS, "max_init_retransmits" },
636 { CTL_INT, NET_SCTP_HB_INTERVAL, "hb_interval" },
637 { CTL_INT, NET_SCTP_PRESERVE_ENABLE, "cookie_preserve_enable" },
638 { CTL_INT, NET_SCTP_MAX_BURST, "max_burst" },
639 { CTL_INT, NET_SCTP_ADDIP_ENABLE, "addip_enable" },
640 { CTL_INT, NET_SCTP_PRSCTP_ENABLE, "prsctp_enable" },
641 { CTL_INT, NET_SCTP_SNDBUF_POLICY, "sndbuf_policy" },
642 { CTL_INT, NET_SCTP_SACK_TIMEOUT, "sack_timeout" },
643 { CTL_INT, NET_SCTP_RCVBUF_POLICY, "rcvbuf_policy" },
644 {}
645 };
646
647 static const struct bin_table bin_net_llc_llc2_timeout_table[] = {
648 { CTL_INT, NET_LLC2_ACK_TIMEOUT, "ack" },
649 { CTL_INT, NET_LLC2_P_TIMEOUT, "p" },
650 { CTL_INT, NET_LLC2_REJ_TIMEOUT, "rej" },
651 { CTL_INT, NET_LLC2_BUSY_TIMEOUT, "busy" },
652 {}
653 };
654
655 static const struct bin_table bin_net_llc_station_table[] = {
656 { CTL_INT, NET_LLC_STATION_ACK_TIMEOUT, "ack_timeout" },
657 {}
658 };
659
660 static const struct bin_table bin_net_llc_llc2_table[] = {
661 { CTL_DIR, NET_LLC2, "timeout", bin_net_llc_llc2_timeout_table },
662 {}
663 };
664
665 static const struct bin_table bin_net_llc_table[] = {
666 { CTL_DIR, NET_LLC2, "llc2", bin_net_llc_llc2_table },
667 { CTL_DIR, NET_LLC_STATION, "station", bin_net_llc_station_table },
668 {}
669 };
670
671 static const struct bin_table bin_net_netfilter_table[] = {
672 { CTL_INT, NET_NF_CONNTRACK_MAX, "nf_conntrack_max" },
673 /* NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT "nf_conntrack_tcp_timeout_syn_sent" no longer used */
674 /* NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV "nf_conntrack_tcp_timeout_syn_recv" no longer used */
675 /* NET_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED "nf_conntrack_tcp_timeout_established" no longer used */
676 /* NET_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT "nf_conntrack_tcp_timeout_fin_wait" no longer used */
677 /* NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT "nf_conntrack_tcp_timeout_close_wait" no longer used */
678 /* NET_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK "nf_conntrack_tcp_timeout_last_ack" no longer used */
679 /* NET_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT "nf_conntrack_tcp_timeout_time_wait" no longer used */
680 /* NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE "nf_conntrack_tcp_timeout_close" no longer used */
681 /* NET_NF_CONNTRACK_UDP_TIMEOUT "nf_conntrack_udp_timeout" no longer used */
682 /* NET_NF_CONNTRACK_UDP_TIMEOUT_STREAM "nf_conntrack_udp_timeout_stream" no longer used */
683 /* NET_NF_CONNTRACK_ICMP_TIMEOUT "nf_conntrack_icmp_timeout" no longer used */
684 /* NET_NF_CONNTRACK_GENERIC_TIMEOUT "nf_conntrack_generic_timeout" no longer used */
685 { CTL_INT, NET_NF_CONNTRACK_BUCKETS, "nf_conntrack_buckets" },
686 { CTL_INT, NET_NF_CONNTRACK_LOG_INVALID, "nf_conntrack_log_invalid" },
687 /* NET_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS "nf_conntrack_tcp_timeout_max_retrans" no longer used */
688 { CTL_INT, NET_NF_CONNTRACK_TCP_LOOSE, "nf_conntrack_tcp_loose" },
689 { CTL_INT, NET_NF_CONNTRACK_TCP_BE_LIBERAL, "nf_conntrack_tcp_be_liberal" },
690 { CTL_INT, NET_NF_CONNTRACK_TCP_MAX_RETRANS, "nf_conntrack_tcp_max_retrans" },
691 /* NET_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED "nf_conntrack_sctp_timeout_closed" no longer used */
692 /* NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT "nf_conntrack_sctp_timeout_cookie_wait" no longer used */
693 /* NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED "nf_conntrack_sctp_timeout_cookie_echoed" no longer used */
694 /* NET_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED "nf_conntrack_sctp_timeout_established" no longer used */
695 /* NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT "nf_conntrack_sctp_timeout_shutdown_sent" no longer used */
696 /* NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD "nf_conntrack_sctp_timeout_shutdown_recd" no longer used */
697 /* NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT "nf_conntrack_sctp_timeout_shutdown_ack_sent" no longer used */
698 { CTL_INT, NET_NF_CONNTRACK_COUNT, "nf_conntrack_count" },
699 /* NET_NF_CONNTRACK_ICMPV6_TIMEOUT "nf_conntrack_icmpv6_timeout" no longer used */
700 /* NET_NF_CONNTRACK_FRAG6_TIMEOUT "nf_conntrack_frag6_timeout" no longer used */
701 { CTL_INT, NET_NF_CONNTRACK_FRAG6_LOW_THRESH, "nf_conntrack_frag6_low_thresh" },
702 { CTL_INT, NET_NF_CONNTRACK_FRAG6_HIGH_THRESH, "nf_conntrack_frag6_high_thresh" },
703 { CTL_INT, NET_NF_CONNTRACK_CHECKSUM, "nf_conntrack_checksum" },
704
705 {}
706 };
707
708 static const struct bin_table bin_net_table[] = {
709 { CTL_DIR, NET_CORE, "core", bin_net_core_table },
710 /* NET_ETHER not used */
711 /* NET_802 not used */
712 { CTL_DIR, NET_UNIX, "unix", bin_net_unix_table },
713 { CTL_DIR, NET_IPV4, "ipv4", bin_net_ipv4_table },
714 { CTL_DIR, NET_IPX, "ipx", bin_net_ipx_table },
715 { CTL_DIR, NET_ATALK, "appletalk", bin_net_atalk_table },
716 { CTL_DIR, NET_NETROM, "netrom", bin_net_netrom_table },
717 { CTL_DIR, NET_AX25, "ax25", bin_net_ax25_table },
718 /* NET_BRIDGE "bridge" no longer used */
719 { CTL_DIR, NET_ROSE, "rose", bin_net_rose_table },
720 { CTL_DIR, NET_IPV6, "ipv6", bin_net_ipv6_table },
721 { CTL_DIR, NET_X25, "x25", bin_net_x25_table },
722 { CTL_DIR, NET_TR, "token-ring", bin_net_tr_table },
723 { CTL_DIR, NET_DECNET, "decnet", bin_net_decnet_table },
724 /* NET_ECONET not used */
725 { CTL_DIR, NET_SCTP, "sctp", bin_net_sctp_table },
726 { CTL_DIR, NET_LLC, "llc", bin_net_llc_table },
727 { CTL_DIR, NET_NETFILTER, "netfilter", bin_net_netfilter_table },
728 /* NET_DCCP "dccp" no longer used */
729 /* NET_IRDA "irda" no longer used */
730 { CTL_INT, 2089, "nf_conntrack_max" },
731 {}
732 };
733
734 static const struct bin_table bin_fs_quota_table[] = {
735 { CTL_INT, FS_DQ_LOOKUPS, "lookups" },
736 { CTL_INT, FS_DQ_DROPS, "drops" },
737 { CTL_INT, FS_DQ_READS, "reads" },
738 { CTL_INT, FS_DQ_WRITES, "writes" },
739 { CTL_INT, FS_DQ_CACHE_HITS, "cache_hits" },
740 { CTL_INT, FS_DQ_ALLOCATED, "allocated_dquots" },
741 { CTL_INT, FS_DQ_FREE, "free_dquots" },
742 { CTL_INT, FS_DQ_SYNCS, "syncs" },
743 { CTL_INT, FS_DQ_WARNINGS, "warnings" },
744 {}
745 };
746
747 static const struct bin_table bin_fs_xfs_table[] = {
748 { CTL_INT, XFS_SGID_INHERIT, "irix_sgid_inherit" },
749 { CTL_INT, XFS_SYMLINK_MODE, "irix_symlink_mode" },
750 { CTL_INT, XFS_PANIC_MASK, "panic_mask" },
751
752 { CTL_INT, XFS_ERRLEVEL, "error_level" },
753 { CTL_INT, XFS_SYNCD_TIMER, "xfssyncd_centisecs" },
754 { CTL_INT, XFS_INHERIT_SYNC, "inherit_sync" },
755 { CTL_INT, XFS_INHERIT_NODUMP, "inherit_nodump" },
756 { CTL_INT, XFS_INHERIT_NOATIME, "inherit_noatime" },
757 { CTL_INT, XFS_BUF_TIMER, "xfsbufd_centisecs" },
758 { CTL_INT, XFS_BUF_AGE, "age_buffer_centisecs" },
759 { CTL_INT, XFS_INHERIT_NOSYM, "inherit_nosymlinks" },
760 { CTL_INT, XFS_ROTORSTEP, "rotorstep" },
761 { CTL_INT, XFS_INHERIT_NODFRG, "inherit_nodefrag" },
762 { CTL_INT, XFS_FILESTREAM_TIMER, "filestream_centisecs" },
763 { CTL_INT, XFS_STATS_CLEAR, "stats_clear" },
764 {}
765 };
766
767 static const struct bin_table bin_fs_ocfs2_nm_table[] = {
768 { CTL_STR, 1, "hb_ctl_path" },
769 {}
770 };
771
772 static const struct bin_table bin_fs_ocfs2_table[] = {
773 { CTL_DIR, 1, "nm", bin_fs_ocfs2_nm_table },
774 {}
775 };
776
777 static const struct bin_table bin_inotify_table[] = {
778 { CTL_INT, INOTIFY_MAX_USER_INSTANCES, "max_user_instances" },
779 { CTL_INT, INOTIFY_MAX_USER_WATCHES, "max_user_watches" },
780 { CTL_INT, INOTIFY_MAX_QUEUED_EVENTS, "max_queued_events" },
781 {}
782 };
783
784 static const struct bin_table bin_fs_table[] = {
785 { CTL_INT, FS_NRINODE, "inode-nr" },
786 { CTL_INT, FS_STATINODE, "inode-state" },
787 /* FS_MAXINODE unused */
788 /* FS_NRDQUOT unused */
789 /* FS_MAXDQUOT unused */
790 /* FS_NRFILE "file-nr" no longer used */
791 { CTL_INT, FS_MAXFILE, "file-max" },
792 { CTL_INT, FS_DENTRY, "dentry-state" },
793 /* FS_NRSUPER unused */
794 /* FS_MAXUPSER unused */
795 { CTL_INT, FS_OVERFLOWUID, "overflowuid" },
796 { CTL_INT, FS_OVERFLOWGID, "overflowgid" },
797 { CTL_INT, FS_LEASES, "leases-enable" },
798 { CTL_INT, FS_DIR_NOTIFY, "dir-notify-enable" },
799 { CTL_INT, FS_LEASE_TIME, "lease-break-time" },
800 { CTL_DIR, FS_DQSTATS, "quota", bin_fs_quota_table },
801 { CTL_DIR, FS_XFS, "xfs", bin_fs_xfs_table },
802 { CTL_ULONG, FS_AIO_NR, "aio-nr" },
803 { CTL_ULONG, FS_AIO_MAX_NR, "aio-max-nr" },
804 { CTL_DIR, FS_INOTIFY, "inotify", bin_inotify_table },
805 { CTL_DIR, FS_OCFS2, "ocfs2", bin_fs_ocfs2_table },
806 { CTL_INT, KERN_SETUID_DUMPABLE, "suid_dumpable" },
807 {}
808 };
809
810 static const struct bin_table bin_ipmi_table[] = {
811 { CTL_INT, DEV_IPMI_POWEROFF_POWERCYCLE, "poweroff_powercycle" },
812 {}
813 };
814
815 static const struct bin_table bin_mac_hid_files[] = {
816 /* DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES unused */
817 /* DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES unused */
818 { CTL_INT, DEV_MAC_HID_MOUSE_BUTTON_EMULATION, "mouse_button_emulation" },
819 { CTL_INT, DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE, "mouse_button2_keycode" },
820 { CTL_INT, DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE, "mouse_button3_keycode" },
821 /* DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES unused */
822 {}
823 };
824
825 static const struct bin_table bin_raid_table[] = {
826 { CTL_INT, DEV_RAID_SPEED_LIMIT_MIN, "speed_limit_min" },
827 { CTL_INT, DEV_RAID_SPEED_LIMIT_MAX, "speed_limit_max" },
828 {}
829 };
830
831 static const struct bin_table bin_scsi_table[] = {
832 { CTL_INT, DEV_SCSI_LOGGING_LEVEL, "logging_level" },
833 {}
834 };
835
836 static const struct bin_table bin_dev_table[] = {
837 /* DEV_CDROM "cdrom" no longer used */
838 /* DEV_HWMON unused */
839 /* DEV_PARPORT "parport" no longer used */
840 { CTL_DIR, DEV_RAID, "raid", bin_raid_table },
841 { CTL_DIR, DEV_MAC_HID, "mac_hid", bin_mac_hid_files },
842 { CTL_DIR, DEV_SCSI, "scsi", bin_scsi_table },
843 { CTL_DIR, DEV_IPMI, "ipmi", bin_ipmi_table },
844 {}
845 };
846
847 static const struct bin_table bin_bus_isa_table[] = {
848 { CTL_INT, BUS_ISA_MEM_BASE, "membase" },
849 { CTL_INT, BUS_ISA_PORT_BASE, "portbase" },
850 { CTL_INT, BUS_ISA_PORT_SHIFT, "portshift" },
851 {}
852 };
853
854 static const struct bin_table bin_bus_table[] = {
855 { CTL_DIR, CTL_BUS_ISA, "isa", bin_bus_isa_table },
856 {}
857 };
858
859
860 static const struct bin_table bin_s390dbf_table[] = {
861 { CTL_INT, 5678 /* CTL_S390DBF_STOPPABLE */, "debug_stoppable" },
862 { CTL_INT, 5679 /* CTL_S390DBF_ACTIVE */, "debug_active" },
863 {}
864 };
865
866 static const struct bin_table bin_sunrpc_table[] = {
867 /* CTL_RPCDEBUG "rpc_debug" no longer used */
868 /* CTL_NFSDEBUG "nfs_debug" no longer used */
869 /* CTL_NFSDDEBUG "nfsd_debug" no longer used */
870 /* CTL_NLMDEBUG "nlm_debug" no longer used */
871
872 { CTL_INT, CTL_SLOTTABLE_UDP, "udp_slot_table_entries" },
873 { CTL_INT, CTL_SLOTTABLE_TCP, "tcp_slot_table_entries" },
874 { CTL_INT, CTL_MIN_RESVPORT, "min_resvport" },
875 { CTL_INT, CTL_MAX_RESVPORT, "max_resvport" },
876 {}
877 };
878
879 static const struct bin_table bin_pm_table[] = {
880 /* frv specific */
881 /* 1 == CTL_PM_SUSPEND "suspend" no longer used" */
882 { CTL_INT, 2 /* CTL_PM_CMODE */, "cmode" },
883 { CTL_INT, 3 /* CTL_PM_P0 */, "p0" },
884 { CTL_INT, 4 /* CTL_PM_CM */, "cm" },
885 {}
886 };
887
888 static const struct bin_table bin_root_table[] = {
889 { CTL_DIR, CTL_KERN, "kernel", bin_kern_table },
890 { CTL_DIR, CTL_VM, "vm", bin_vm_table },
891 { CTL_DIR, CTL_NET, "net", bin_net_table },
892 /* CTL_PROC not used */
893 { CTL_DIR, CTL_FS, "fs", bin_fs_table },
894 /* CTL_DEBUG "debug" no longer used */
895 { CTL_DIR, CTL_DEV, "dev", bin_dev_table },
896 { CTL_DIR, CTL_BUS, "bus", bin_bus_table },
897 { CTL_DIR, CTL_ABI, "abi" },
898 /* CTL_CPU not used */
899 /* CTL_ARLAN "arlan" no longer used */
900 { CTL_DIR, CTL_S390DBF, "s390dbf", bin_s390dbf_table },
901 { CTL_DIR, CTL_SUNRPC, "sunrpc", bin_sunrpc_table },
902 { CTL_DIR, CTL_PM, "pm", bin_pm_table },
903 {}
904 };
905
bin_dir(struct file * file,void __user * oldval,size_t oldlen,void __user * newval,size_t newlen)906 static ssize_t bin_dir(struct file *file,
907 void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
908 {
909 return -ENOTDIR;
910 }
911
912
bin_string(struct file * file,void __user * oldval,size_t oldlen,void __user * newval,size_t newlen)913 static ssize_t bin_string(struct file *file,
914 void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
915 {
916 ssize_t result, copied = 0;
917
918 if (oldval && oldlen) {
919 char __user *lastp;
920 loff_t pos = 0;
921 int ch;
922
923 result = vfs_read(file, oldval, oldlen, &pos);
924 if (result < 0)
925 goto out;
926
927 copied = result;
928 lastp = oldval + copied - 1;
929
930 result = -EFAULT;
931 if (get_user(ch, lastp))
932 goto out;
933
934 /* Trim off the trailing newline */
935 if (ch == '\n') {
936 result = -EFAULT;
937 if (put_user('\0', lastp))
938 goto out;
939 copied -= 1;
940 }
941 }
942
943 if (newval && newlen) {
944 loff_t pos = 0;
945
946 result = vfs_write(file, newval, newlen, &pos);
947 if (result < 0)
948 goto out;
949 }
950
951 result = copied;
952 out:
953 return result;
954 }
955
bin_intvec(struct file * file,void __user * oldval,size_t oldlen,void __user * newval,size_t newlen)956 static ssize_t bin_intvec(struct file *file,
957 void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
958 {
959 ssize_t copied = 0;
960 char *buffer;
961 ssize_t result;
962
963 result = -ENOMEM;
964 buffer = kmalloc(BUFSZ, GFP_KERNEL);
965 if (!buffer)
966 goto out;
967
968 if (oldval && oldlen) {
969 unsigned __user *vec = oldval;
970 size_t length = oldlen / sizeof(*vec);
971 char *str, *end;
972 int i;
973 loff_t pos = 0;
974
975 result = kernel_read(file, buffer, BUFSZ - 1, &pos);
976 if (result < 0)
977 goto out_kfree;
978
979 str = buffer;
980 end = str + result;
981 *end++ = '\0';
982 for (i = 0; i < length; i++) {
983 unsigned long value;
984
985 value = simple_strtoul(str, &str, 10);
986 while (isspace(*str))
987 str++;
988
989 result = -EFAULT;
990 if (put_user(value, vec + i))
991 goto out_kfree;
992
993 copied += sizeof(*vec);
994 if (!isdigit(*str))
995 break;
996 }
997 }
998
999 if (newval && newlen) {
1000 unsigned __user *vec = newval;
1001 size_t length = newlen / sizeof(*vec);
1002 char *str, *end;
1003 int i;
1004 loff_t pos = 0;
1005
1006 str = buffer;
1007 end = str + BUFSZ;
1008 for (i = 0; i < length; i++) {
1009 unsigned long value;
1010
1011 result = -EFAULT;
1012 if (get_user(value, vec + i))
1013 goto out_kfree;
1014
1015 str += scnprintf(str, end - str, "%lu\t", value);
1016 }
1017
1018 result = kernel_write(file, buffer, str - buffer, &pos);
1019 if (result < 0)
1020 goto out_kfree;
1021 }
1022 result = copied;
1023 out_kfree:
1024 kfree(buffer);
1025 out:
1026 return result;
1027 }
1028
bin_ulongvec(struct file * file,void __user * oldval,size_t oldlen,void __user * newval,size_t newlen)1029 static ssize_t bin_ulongvec(struct file *file,
1030 void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1031 {
1032 ssize_t copied = 0;
1033 char *buffer;
1034 ssize_t result;
1035
1036 result = -ENOMEM;
1037 buffer = kmalloc(BUFSZ, GFP_KERNEL);
1038 if (!buffer)
1039 goto out;
1040
1041 if (oldval && oldlen) {
1042 unsigned long __user *vec = oldval;
1043 size_t length = oldlen / sizeof(*vec);
1044 char *str, *end;
1045 int i;
1046 loff_t pos = 0;
1047
1048 result = kernel_read(file, buffer, BUFSZ - 1, &pos);
1049 if (result < 0)
1050 goto out_kfree;
1051
1052 str = buffer;
1053 end = str + result;
1054 *end++ = '\0';
1055 for (i = 0; i < length; i++) {
1056 unsigned long value;
1057
1058 value = simple_strtoul(str, &str, 10);
1059 while (isspace(*str))
1060 str++;
1061
1062 result = -EFAULT;
1063 if (put_user(value, vec + i))
1064 goto out_kfree;
1065
1066 copied += sizeof(*vec);
1067 if (!isdigit(*str))
1068 break;
1069 }
1070 }
1071
1072 if (newval && newlen) {
1073 unsigned long __user *vec = newval;
1074 size_t length = newlen / sizeof(*vec);
1075 char *str, *end;
1076 int i;
1077 loff_t pos = 0;
1078
1079 str = buffer;
1080 end = str + BUFSZ;
1081 for (i = 0; i < length; i++) {
1082 unsigned long value;
1083
1084 result = -EFAULT;
1085 if (get_user(value, vec + i))
1086 goto out_kfree;
1087
1088 str += scnprintf(str, end - str, "%lu\t", value);
1089 }
1090
1091 result = kernel_write(file, buffer, str - buffer, &pos);
1092 if (result < 0)
1093 goto out_kfree;
1094 }
1095 result = copied;
1096 out_kfree:
1097 kfree(buffer);
1098 out:
1099 return result;
1100 }
1101
bin_uuid(struct file * file,void __user * oldval,size_t oldlen,void __user * newval,size_t newlen)1102 static ssize_t bin_uuid(struct file *file,
1103 void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1104 {
1105 ssize_t result, copied = 0;
1106
1107 /* Only supports reads */
1108 if (oldval && oldlen) {
1109 char buf[UUID_STRING_LEN + 1];
1110 uuid_t uuid;
1111 loff_t pos = 0;
1112
1113 result = kernel_read(file, buf, sizeof(buf) - 1, &pos);
1114 if (result < 0)
1115 goto out;
1116
1117 buf[result] = '\0';
1118
1119 result = -EIO;
1120 if (uuid_parse(buf, &uuid))
1121 goto out;
1122
1123 if (oldlen > 16)
1124 oldlen = 16;
1125
1126 result = -EFAULT;
1127 if (copy_to_user(oldval, &uuid, oldlen))
1128 goto out;
1129
1130 copied = oldlen;
1131 }
1132 result = copied;
1133 out:
1134 return result;
1135 }
1136
bin_dn_node_address(struct file * file,void __user * oldval,size_t oldlen,void __user * newval,size_t newlen)1137 static ssize_t bin_dn_node_address(struct file *file,
1138 void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1139 {
1140 ssize_t result, copied = 0;
1141
1142 if (oldval && oldlen) {
1143 char buf[15], *nodep;
1144 unsigned long area, node;
1145 __le16 dnaddr;
1146 loff_t pos = 0;
1147
1148 result = kernel_read(file, buf, sizeof(buf) - 1, &pos);
1149 if (result < 0)
1150 goto out;
1151
1152 buf[result] = '\0';
1153
1154 /* Convert the decnet address to binary */
1155 result = -EIO;
1156 nodep = strchr(buf, '.');
1157 if (!nodep)
1158 goto out;
1159 ++nodep;
1160
1161 area = simple_strtoul(buf, NULL, 10);
1162 node = simple_strtoul(nodep, NULL, 10);
1163
1164 result = -EIO;
1165 if ((area > 63)||(node > 1023))
1166 goto out;
1167
1168 dnaddr = cpu_to_le16((area << 10) | node);
1169
1170 result = -EFAULT;
1171 if (put_user(dnaddr, (__le16 __user *)oldval))
1172 goto out;
1173
1174 copied = sizeof(dnaddr);
1175 }
1176
1177 if (newval && newlen) {
1178 __le16 dnaddr;
1179 char buf[15];
1180 int len;
1181 loff_t pos = 0;
1182
1183 result = -EINVAL;
1184 if (newlen != sizeof(dnaddr))
1185 goto out;
1186
1187 result = -EFAULT;
1188 if (get_user(dnaddr, (__le16 __user *)newval))
1189 goto out;
1190
1191 len = scnprintf(buf, sizeof(buf), "%hu.%hu",
1192 le16_to_cpu(dnaddr) >> 10,
1193 le16_to_cpu(dnaddr) & 0x3ff);
1194
1195 result = kernel_write(file, buf, len, &pos);
1196 if (result < 0)
1197 goto out;
1198 }
1199
1200 result = copied;
1201 out:
1202 return result;
1203 }
1204
get_sysctl(const int * name,int nlen,char * path)1205 static const struct bin_table *get_sysctl(const int *name, int nlen, char *path)
1206 {
1207 const struct bin_table *table = &bin_root_table[0];
1208 int ctl_name;
1209
1210 /* The binary sysctl tables have a small maximum depth so
1211 * there is no danger of overflowing our path as it PATH_MAX
1212 * bytes long.
1213 */
1214 memcpy(path, "sys/", 4);
1215 path += 4;
1216
1217 repeat:
1218 if (!nlen)
1219 return ERR_PTR(-ENOTDIR);
1220 ctl_name = *name;
1221 name++;
1222 nlen--;
1223 for ( ; table->convert; table++) {
1224 int len = 0;
1225
1226 /*
1227 * For a wild card entry map from ifindex to network
1228 * device name.
1229 */
1230 if (!table->ctl_name) {
1231 #ifdef CONFIG_NET
1232 struct net *net = current->nsproxy->net_ns;
1233 struct net_device *dev;
1234 dev = dev_get_by_index(net, ctl_name);
1235 if (dev) {
1236 len = strlen(dev->name);
1237 memcpy(path, dev->name, len);
1238 dev_put(dev);
1239 }
1240 #endif
1241 /* Use the well known sysctl number to proc name mapping */
1242 } else if (ctl_name == table->ctl_name) {
1243 len = strlen(table->procname);
1244 memcpy(path, table->procname, len);
1245 }
1246 if (len) {
1247 path += len;
1248 if (table->child) {
1249 *path++ = '/';
1250 table = table->child;
1251 goto repeat;
1252 }
1253 *path = '\0';
1254 return table;
1255 }
1256 }
1257 return ERR_PTR(-ENOTDIR);
1258 }
1259
sysctl_getname(const int * name,int nlen,const struct bin_table ** tablep)1260 static char *sysctl_getname(const int *name, int nlen, const struct bin_table **tablep)
1261 {
1262 char *tmp, *result;
1263
1264 result = ERR_PTR(-ENOMEM);
1265 tmp = __getname();
1266 if (tmp) {
1267 const struct bin_table *table = get_sysctl(name, nlen, tmp);
1268 result = tmp;
1269 *tablep = table;
1270 if (IS_ERR(table)) {
1271 __putname(tmp);
1272 result = ERR_CAST(table);
1273 }
1274 }
1275 return result;
1276 }
1277
binary_sysctl(const int * name,int nlen,void __user * oldval,size_t oldlen,void __user * newval,size_t newlen)1278 static ssize_t binary_sysctl(const int *name, int nlen,
1279 void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1280 {
1281 const struct bin_table *table = NULL;
1282 struct vfsmount *mnt;
1283 struct file *file;
1284 ssize_t result;
1285 char *pathname;
1286 int flags;
1287
1288 pathname = sysctl_getname(name, nlen, &table);
1289 result = PTR_ERR(pathname);
1290 if (IS_ERR(pathname))
1291 goto out;
1292
1293 /* How should the sysctl be accessed? */
1294 if (oldval && oldlen && newval && newlen) {
1295 flags = O_RDWR;
1296 } else if (newval && newlen) {
1297 flags = O_WRONLY;
1298 } else if (oldval && oldlen) {
1299 flags = O_RDONLY;
1300 } else {
1301 result = 0;
1302 goto out_putname;
1303 }
1304
1305 mnt = task_active_pid_ns(current)->proc_mnt;
1306 file = file_open_root(mnt->mnt_root, mnt, pathname, flags, 0);
1307 result = PTR_ERR(file);
1308 if (IS_ERR(file))
1309 goto out_putname;
1310
1311 result = table->convert(file, oldval, oldlen, newval, newlen);
1312
1313 fput(file);
1314 out_putname:
1315 __putname(pathname);
1316 out:
1317 return result;
1318 }
1319
1320
1321 #else /* CONFIG_SYSCTL_SYSCALL */
1322
binary_sysctl(const int * name,int nlen,void __user * oldval,size_t oldlen,void __user * newval,size_t newlen)1323 static ssize_t binary_sysctl(const int *name, int nlen,
1324 void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1325 {
1326 return -ENOSYS;
1327 }
1328
1329 #endif /* CONFIG_SYSCTL_SYSCALL */
1330
1331
deprecated_sysctl_warning(const int * name,int nlen)1332 static void deprecated_sysctl_warning(const int *name, int nlen)
1333 {
1334 int i;
1335
1336 /*
1337 * CTL_KERN/KERN_VERSION is used by older glibc and cannot
1338 * ever go away.
1339 */
1340 if (nlen >= 2 && name[0] == CTL_KERN && name[1] == KERN_VERSION)
1341 return;
1342
1343 if (printk_ratelimit()) {
1344 printk(KERN_INFO
1345 "warning: process `%s' used the deprecated sysctl "
1346 "system call with ", current->comm);
1347 for (i = 0; i < nlen; i++)
1348 printk(KERN_CONT "%d.", name[i]);
1349 printk(KERN_CONT "\n");
1350 }
1351 return;
1352 }
1353
1354 #define WARN_ONCE_HASH_BITS 8
1355 #define WARN_ONCE_HASH_SIZE (1<<WARN_ONCE_HASH_BITS)
1356
1357 static DECLARE_BITMAP(warn_once_bitmap, WARN_ONCE_HASH_SIZE);
1358
1359 #define FNV32_OFFSET 2166136261U
1360 #define FNV32_PRIME 0x01000193
1361
1362 /*
1363 * Print each legacy sysctl (approximately) only once.
1364 * To avoid making the tables non-const use a external
1365 * hash-table instead.
1366 * Worst case hash collision: 6, but very rarely.
1367 * NOTE! We don't use the SMP-safe bit tests. We simply
1368 * don't care enough.
1369 */
warn_on_bintable(const int * name,int nlen)1370 static void warn_on_bintable(const int *name, int nlen)
1371 {
1372 int i;
1373 u32 hash = FNV32_OFFSET;
1374
1375 for (i = 0; i < nlen; i++)
1376 hash = (hash ^ name[i]) * FNV32_PRIME;
1377 hash %= WARN_ONCE_HASH_SIZE;
1378 if (__test_and_set_bit(hash, warn_once_bitmap))
1379 return;
1380 deprecated_sysctl_warning(name, nlen);
1381 }
1382
do_sysctl(int __user * args_name,int nlen,void __user * oldval,size_t oldlen,void __user * newval,size_t newlen)1383 static ssize_t do_sysctl(int __user *args_name, int nlen,
1384 void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1385 {
1386 int name[CTL_MAXNAME];
1387 int i;
1388
1389 /* Check args->nlen. */
1390 if (nlen < 0 || nlen > CTL_MAXNAME)
1391 return -ENOTDIR;
1392 /* Read in the sysctl name for simplicity */
1393 for (i = 0; i < nlen; i++)
1394 if (get_user(name[i], args_name + i))
1395 return -EFAULT;
1396
1397 warn_on_bintable(name, nlen);
1398
1399 return binary_sysctl(name, nlen, oldval, oldlen, newval, newlen);
1400 }
1401
SYSCALL_DEFINE1(sysctl,struct __sysctl_args __user *,args)1402 SYSCALL_DEFINE1(sysctl, struct __sysctl_args __user *, args)
1403 {
1404 struct __sysctl_args tmp;
1405 size_t oldlen = 0;
1406 ssize_t result;
1407
1408 if (copy_from_user(&tmp, args, sizeof(tmp)))
1409 return -EFAULT;
1410
1411 if (tmp.oldval && !tmp.oldlenp)
1412 return -EFAULT;
1413
1414 if (tmp.oldlenp && get_user(oldlen, tmp.oldlenp))
1415 return -EFAULT;
1416
1417 result = do_sysctl(tmp.name, tmp.nlen, tmp.oldval, oldlen,
1418 tmp.newval, tmp.newlen);
1419
1420 if (result >= 0) {
1421 oldlen = result;
1422 result = 0;
1423 }
1424
1425 if (tmp.oldlenp && put_user(oldlen, tmp.oldlenp))
1426 return -EFAULT;
1427
1428 return result;
1429 }
1430
1431
1432 #ifdef CONFIG_COMPAT
1433
1434 struct compat_sysctl_args {
1435 compat_uptr_t name;
1436 int nlen;
1437 compat_uptr_t oldval;
1438 compat_uptr_t oldlenp;
1439 compat_uptr_t newval;
1440 compat_size_t newlen;
1441 compat_ulong_t __unused[4];
1442 };
1443
COMPAT_SYSCALL_DEFINE1(sysctl,struct compat_sysctl_args __user *,args)1444 COMPAT_SYSCALL_DEFINE1(sysctl, struct compat_sysctl_args __user *, args)
1445 {
1446 struct compat_sysctl_args tmp;
1447 compat_size_t __user *compat_oldlenp;
1448 size_t oldlen = 0;
1449 ssize_t result;
1450
1451 if (copy_from_user(&tmp, args, sizeof(tmp)))
1452 return -EFAULT;
1453
1454 if (tmp.oldval && !tmp.oldlenp)
1455 return -EFAULT;
1456
1457 compat_oldlenp = compat_ptr(tmp.oldlenp);
1458 if (compat_oldlenp && get_user(oldlen, compat_oldlenp))
1459 return -EFAULT;
1460
1461 result = do_sysctl(compat_ptr(tmp.name), tmp.nlen,
1462 compat_ptr(tmp.oldval), oldlen,
1463 compat_ptr(tmp.newval), tmp.newlen);
1464
1465 if (result >= 0) {
1466 oldlen = result;
1467 result = 0;
1468 }
1469
1470 if (compat_oldlenp && put_user(oldlen, compat_oldlenp))
1471 return -EFAULT;
1472
1473 return result;
1474 }
1475
1476 #endif /* CONFIG_COMPAT */
1477