Version:  2.0.40 2.2.26 2.4.37 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10

Linux/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/uuid.h>
 17 #include <linux/slab.h>
 18 #include <linux/compat.h>
 19 
 20 #ifdef CONFIG_SYSCTL_SYSCALL
 21 
 22 struct bin_table;
 23 typedef ssize_t bin_convert_t(struct file *file,
 24         void __user *oldval, size_t oldlen, void __user *newval, size_t newlen);
 25 
 26 static bin_convert_t bin_dir;
 27 static bin_convert_t bin_string;
 28 static bin_convert_t bin_intvec;
 29 static bin_convert_t bin_ulongvec;
 30 static bin_convert_t bin_uuid;
 31 static bin_convert_t bin_dn_node_address;
 32 
 33 #define CTL_DIR   bin_dir
 34 #define CTL_STR   bin_string
 35 #define CTL_INT   bin_intvec
 36 #define CTL_ULONG bin_ulongvec
 37 #define CTL_UUID  bin_uuid
 38 #define CTL_DNADR bin_dn_node_address
 39 
 40 #define BUFSZ 256
 41 
 42 struct bin_table {
 43         bin_convert_t           *convert;
 44         int                     ctl_name;
 45         const char              *procname;
 46         const struct bin_table  *child;
 47 };
 48 
 49 static const struct bin_table bin_random_table[] = {
 50         { CTL_INT,      RANDOM_POOLSIZE,        "poolsize" },
 51         { CTL_INT,      RANDOM_ENTROPY_COUNT,   "entropy_avail" },
 52         { CTL_INT,      RANDOM_READ_THRESH,     "read_wakeup_threshold" },
 53         { CTL_INT,      RANDOM_WRITE_THRESH,    "write_wakeup_threshold" },
 54         { CTL_UUID,     RANDOM_BOOT_ID,         "boot_id" },
 55         { CTL_UUID,     RANDOM_UUID,            "uuid" },
 56         {}
 57 };
 58 
 59 static const struct bin_table bin_pty_table[] = {
 60         { CTL_INT,      PTY_MAX,        "max" },
 61         { CTL_INT,      PTY_NR,         "nr" },
 62         {}
 63 };
 64 
 65 static const struct bin_table bin_kern_table[] = {
 66         { CTL_STR,      KERN_OSTYPE,                    "ostype" },
 67         { CTL_STR,      KERN_OSRELEASE,                 "osrelease" },
 68         /* KERN_OSREV not used */
 69         { CTL_STR,      KERN_VERSION,                   "version" },
 70         /* KERN_SECUREMASK not used */
 71         /* KERN_PROF not used */
 72         { CTL_STR,      KERN_NODENAME,                  "hostname" },
 73         { CTL_STR,      KERN_DOMAINNAME,                "domainname" },
 74 
 75         { CTL_INT,      KERN_PANIC,                     "panic" },
 76         { CTL_INT,      KERN_REALROOTDEV,               "real-root-dev" },
 77 
 78         { CTL_STR,      KERN_SPARC_REBOOT,              "reboot-cmd" },
 79         { CTL_INT,      KERN_CTLALTDEL,                 "ctrl-alt-del" },
 80         { CTL_INT,      KERN_PRINTK,                    "printk" },
 81 
 82         /* KERN_NAMETRANS not used */
 83         /* KERN_PPC_HTABRECLAIM not used */
 84         /* KERN_PPC_ZEROPAGED not used */
 85         { CTL_INT,      KERN_PPC_POWERSAVE_NAP,         "powersave-nap" },
 86 
 87         { CTL_STR,      KERN_MODPROBE,                  "modprobe" },
 88         { CTL_INT,      KERN_SG_BIG_BUFF,               "sg-big-buff" },
 89         { CTL_INT,      KERN_ACCT,                      "acct" },
 90         /* KERN_PPC_L2CR "l2cr" no longer used */
 91 
 92         /* KERN_RTSIGNR not used */
 93         /* KERN_RTSIGMAX not used */
 94 
 95         { CTL_ULONG,    KERN_SHMMAX,                    "shmmax" },
 96         { CTL_INT,      KERN_MSGMAX,                    "msgmax" },
 97         { CTL_INT,      KERN_MSGMNB,                    "msgmnb" },
 98         /* KERN_MSGPOOL not used*/
 99         { CTL_INT,      KERN_SYSRQ,                     "sysrq" },
100         { CTL_INT,      KERN_MAX_THREADS,               "threads-max" },
101         { CTL_DIR,      KERN_RANDOM,                    "random",       bin_random_table },
102         { CTL_ULONG,    KERN_SHMALL,                    "shmall" },
103         { CTL_INT,      KERN_MSGMNI,                    "msgmni" },
104         { CTL_INT,      KERN_SEM,                       "sem" },
105         { CTL_INT,      KERN_SPARC_STOP_A,              "stop-a" },
106         { CTL_INT,      KERN_SHMMNI,                    "shmmni" },
107 
108         { CTL_INT,      KERN_OVERFLOWUID,               "overflowuid" },
109         { CTL_INT,      KERN_OVERFLOWGID,               "overflowgid" },
110 
111         { CTL_STR,      KERN_HOTPLUG,                   "hotplug", },
112         { CTL_INT,      KERN_IEEE_EMULATION_WARNINGS,   "ieee_emulation_warnings" },
113 
114         { CTL_INT,      KERN_S390_USER_DEBUG_LOGGING,   "userprocess_debug" },
115         { CTL_INT,      KERN_CORE_USES_PID,             "core_uses_pid" },
116         /* KERN_TAINTED "tainted" no longer used */
117         { CTL_INT,      KERN_CADPID,                    "cad_pid" },
118         { CTL_INT,      KERN_PIDMAX,                    "pid_max" },
119         { CTL_STR,      KERN_CORE_PATTERN,              "core_pattern" },
120         { CTL_INT,      KERN_PANIC_ON_OOPS,             "panic_on_oops" },
121         { CTL_INT,      KERN_HPPA_PWRSW,                "soft-power" },
122         { CTL_INT,      KERN_HPPA_UNALIGNED,            "unaligned-trap" },
123 
124         { CTL_INT,      KERN_PRINTK_RATELIMIT,          "printk_ratelimit" },
125         { CTL_INT,      KERN_PRINTK_RATELIMIT_BURST,    "printk_ratelimit_burst" },
126 
127         { CTL_DIR,      KERN_PTY,                       "pty",          bin_pty_table },
128         { CTL_INT,      KERN_NGROUPS_MAX,               "ngroups_max" },
129         { CTL_INT,      KERN_SPARC_SCONS_PWROFF,        "scons-poweroff" },
130         /* KERN_HZ_TIMER "hz_timer" no longer used */
131         { CTL_INT,      KERN_UNKNOWN_NMI_PANIC,         "unknown_nmi_panic" },
132         { CTL_INT,      KERN_BOOTLOADER_TYPE,           "bootloader_type" },
133         { CTL_INT,      KERN_RANDOMIZE,                 "randomize_va_space" },
134 
135         { CTL_INT,      KERN_SPIN_RETRY,                "spin_retry" },
136         /* KERN_ACPI_VIDEO_FLAGS "acpi_video_flags" no longer used */
137         { CTL_INT,      KERN_IA64_UNALIGNED,            "ignore-unaligned-usertrap" },
138         { CTL_INT,      KERN_COMPAT_LOG,                "compat-log" },
139         { CTL_INT,      KERN_MAX_LOCK_DEPTH,            "max_lock_depth" },
140         { CTL_INT,      KERN_PANIC_ON_NMI,              "panic_on_unrecovered_nmi" },
141         { CTL_INT,      KERN_PANIC_ON_WARN,             "panic_on_warn" },
142         {}
143 };
144 
145 static const struct bin_table bin_vm_table[] = {
146         { CTL_INT,      VM_OVERCOMMIT_MEMORY,           "overcommit_memory" },
147         { CTL_INT,      VM_PAGE_CLUSTER,                "page-cluster" },
148         { CTL_INT,      VM_DIRTY_BACKGROUND,            "dirty_background_ratio" },
149         { CTL_INT,      VM_DIRTY_RATIO,                 "dirty_ratio" },
150         /* VM_DIRTY_WB_CS "dirty_writeback_centisecs" no longer used */
151         /* VM_DIRTY_EXPIRE_CS "dirty_expire_centisecs" no longer used */
152         /* VM_NR_PDFLUSH_THREADS "nr_pdflush_threads" no longer used */
153         { CTL_INT,      VM_OVERCOMMIT_RATIO,            "overcommit_ratio" },
154         /* VM_PAGEBUF unused */
155         /* VM_HUGETLB_PAGES "nr_hugepages" no longer used */
156         { CTL_INT,      VM_SWAPPINESS,                  "swappiness" },
157         { CTL_INT,      VM_LOWMEM_RESERVE_RATIO,        "lowmem_reserve_ratio" },
158         { CTL_INT,      VM_MIN_FREE_KBYTES,             "min_free_kbytes" },
159         { CTL_INT,      VM_MAX_MAP_COUNT,               "max_map_count" },
160         { CTL_INT,      VM_LAPTOP_MODE,                 "laptop_mode" },
161         { CTL_INT,      VM_BLOCK_DUMP,                  "block_dump" },
162         { CTL_INT,      VM_HUGETLB_GROUP,               "hugetlb_shm_group" },
163         { CTL_INT,      VM_VFS_CACHE_PRESSURE,  "vfs_cache_pressure" },
164         { CTL_INT,      VM_LEGACY_VA_LAYOUT,            "legacy_va_layout" },
165         /* VM_SWAP_TOKEN_TIMEOUT unused */
166         { CTL_INT,      VM_DROP_PAGECACHE,              "drop_caches" },
167         { CTL_INT,      VM_PERCPU_PAGELIST_FRACTION,    "percpu_pagelist_fraction" },
168         { CTL_INT,      VM_ZONE_RECLAIM_MODE,           "zone_reclaim_mode" },
169         { CTL_INT,      VM_MIN_UNMAPPED,                "min_unmapped_ratio" },
170         { CTL_INT,      VM_PANIC_ON_OOM,                "panic_on_oom" },
171         { CTL_INT,      VM_VDSO_ENABLED,                "vdso_enabled" },
172         { CTL_INT,      VM_MIN_SLAB,                    "min_slab_ratio" },
173 
174         {}
175 };
176 
177 static const struct bin_table bin_net_core_table[] = {
178         { CTL_INT,      NET_CORE_WMEM_MAX,      "wmem_max" },
179         { CTL_INT,      NET_CORE_RMEM_MAX,      "rmem_max" },
180         { CTL_INT,      NET_CORE_WMEM_DEFAULT,  "wmem_default" },
181         { CTL_INT,      NET_CORE_RMEM_DEFAULT,  "rmem_default" },
182         /* NET_CORE_DESTROY_DELAY unused */
183         { CTL_INT,      NET_CORE_MAX_BACKLOG,   "netdev_max_backlog" },
184         /* NET_CORE_FASTROUTE unused */
185         { CTL_INT,      NET_CORE_MSG_COST,      "message_cost" },
186         { CTL_INT,      NET_CORE_MSG_BURST,     "message_burst" },
187         { CTL_INT,      NET_CORE_OPTMEM_MAX,    "optmem_max" },
188         /* NET_CORE_HOT_LIST_LENGTH unused */
189         /* NET_CORE_DIVERT_VERSION unused */
190         /* NET_CORE_NO_CONG_THRESH unused */
191         /* NET_CORE_NO_CONG unused */
192         /* NET_CORE_LO_CONG unused */
193         /* NET_CORE_MOD_CONG unused */
194         { CTL_INT,      NET_CORE_DEV_WEIGHT,    "dev_weight" },
195         { CTL_INT,      NET_CORE_SOMAXCONN,     "somaxconn" },
196         { CTL_INT,      NET_CORE_BUDGET,        "netdev_budget" },
197         { CTL_INT,      NET_CORE_AEVENT_ETIME,  "xfrm_aevent_etime" },
198         { CTL_INT,      NET_CORE_AEVENT_RSEQTH, "xfrm_aevent_rseqth" },
199         { CTL_INT,      NET_CORE_WARNINGS,      "warnings" },
200         {},
201 };
202 
203 static const struct bin_table bin_net_unix_table[] = {
204         /* NET_UNIX_DESTROY_DELAY unused */
205         /* NET_UNIX_DELETE_DELAY unused */
206         { CTL_INT,      NET_UNIX_MAX_DGRAM_QLEN,        "max_dgram_qlen" },
207         {}
208 };
209 
210 static const struct bin_table bin_net_ipv4_route_table[] = {
211         { CTL_INT,      NET_IPV4_ROUTE_FLUSH,                   "flush" },
212         /* NET_IPV4_ROUTE_MIN_DELAY "min_delay" no longer used */
213         /* NET_IPV4_ROUTE_MAX_DELAY "max_delay" no longer used */
214         { CTL_INT,      NET_IPV4_ROUTE_GC_THRESH,               "gc_thresh" },
215         { CTL_INT,      NET_IPV4_ROUTE_MAX_SIZE,                "max_size" },
216         { CTL_INT,      NET_IPV4_ROUTE_GC_MIN_INTERVAL,         "gc_min_interval" },
217         { CTL_INT,      NET_IPV4_ROUTE_GC_MIN_INTERVAL_MS,      "gc_min_interval_ms" },
218         { CTL_INT,      NET_IPV4_ROUTE_GC_TIMEOUT,              "gc_timeout" },
219         /* NET_IPV4_ROUTE_GC_INTERVAL "gc_interval" no longer used */
220         { CTL_INT,      NET_IPV4_ROUTE_REDIRECT_LOAD,           "redirect_load" },
221         { CTL_INT,      NET_IPV4_ROUTE_REDIRECT_NUMBER,         "redirect_number" },
222         { CTL_INT,      NET_IPV4_ROUTE_REDIRECT_SILENCE,        "redirect_silence" },
223         { CTL_INT,      NET_IPV4_ROUTE_ERROR_COST,              "error_cost" },
224         { CTL_INT,      NET_IPV4_ROUTE_ERROR_BURST,             "error_burst" },
225         { CTL_INT,      NET_IPV4_ROUTE_GC_ELASTICITY,           "gc_elasticity" },
226         { CTL_INT,      NET_IPV4_ROUTE_MTU_EXPIRES,             "mtu_expires" },
227         { CTL_INT,      NET_IPV4_ROUTE_MIN_PMTU,                "min_pmtu" },
228         { CTL_INT,      NET_IPV4_ROUTE_MIN_ADVMSS,              "min_adv_mss" },
229         {}
230 };
231 
232 static const struct bin_table bin_net_ipv4_conf_vars_table[] = {
233         { CTL_INT,      NET_IPV4_CONF_FORWARDING,               "forwarding" },
234         { CTL_INT,      NET_IPV4_CONF_MC_FORWARDING,            "mc_forwarding" },
235 
236         { CTL_INT,      NET_IPV4_CONF_ACCEPT_REDIRECTS,         "accept_redirects" },
237         { CTL_INT,      NET_IPV4_CONF_SECURE_REDIRECTS,         "secure_redirects" },
238         { CTL_INT,      NET_IPV4_CONF_SEND_REDIRECTS,           "send_redirects" },
239         { CTL_INT,      NET_IPV4_CONF_SHARED_MEDIA,             "shared_media" },
240         { CTL_INT,      NET_IPV4_CONF_RP_FILTER,                "rp_filter" },
241         { CTL_INT,      NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE,      "accept_source_route" },
242         { CTL_INT,      NET_IPV4_CONF_PROXY_ARP,                "proxy_arp" },
243         { CTL_INT,      NET_IPV4_CONF_MEDIUM_ID,                "medium_id" },
244         { CTL_INT,      NET_IPV4_CONF_BOOTP_RELAY,              "bootp_relay" },
245         { CTL_INT,      NET_IPV4_CONF_LOG_MARTIANS,             "log_martians" },
246         { CTL_INT,      NET_IPV4_CONF_TAG,                      "tag" },
247         { CTL_INT,      NET_IPV4_CONF_ARPFILTER,                "arp_filter" },
248         { CTL_INT,      NET_IPV4_CONF_ARP_ANNOUNCE,             "arp_announce" },
249         { CTL_INT,      NET_IPV4_CONF_ARP_IGNORE,               "arp_ignore" },
250         { CTL_INT,      NET_IPV4_CONF_ARP_ACCEPT,               "arp_accept" },
251         { CTL_INT,      NET_IPV4_CONF_ARP_NOTIFY,               "arp_notify" },
252 
253         { CTL_INT,      NET_IPV4_CONF_NOXFRM,                   "disable_xfrm" },
254         { CTL_INT,      NET_IPV4_CONF_NOPOLICY,                 "disable_policy" },
255         { CTL_INT,      NET_IPV4_CONF_FORCE_IGMP_VERSION,       "force_igmp_version" },
256         { CTL_INT,      NET_IPV4_CONF_PROMOTE_SECONDARIES,      "promote_secondaries" },
257         {}
258 };
259 
260 static const struct bin_table bin_net_ipv4_conf_table[] = {
261         { CTL_DIR,      NET_PROTO_CONF_ALL,     "all",          bin_net_ipv4_conf_vars_table },
262         { CTL_DIR,      NET_PROTO_CONF_DEFAULT, "default",      bin_net_ipv4_conf_vars_table },
263         { CTL_DIR,      0, NULL, bin_net_ipv4_conf_vars_table },
264         {}
265 };
266 
267 static const struct bin_table bin_net_neigh_vars_table[] = {
268         { CTL_INT,      NET_NEIGH_MCAST_SOLICIT,        "mcast_solicit" },
269         { CTL_INT,      NET_NEIGH_UCAST_SOLICIT,        "ucast_solicit" },
270         { CTL_INT,      NET_NEIGH_APP_SOLICIT,          "app_solicit" },
271         /* NET_NEIGH_RETRANS_TIME "retrans_time" no longer used */
272         { CTL_INT,      NET_NEIGH_REACHABLE_TIME,       "base_reachable_time" },
273         { CTL_INT,      NET_NEIGH_DELAY_PROBE_TIME,     "delay_first_probe_time" },
274         { CTL_INT,      NET_NEIGH_GC_STALE_TIME,        "gc_stale_time" },
275         { CTL_INT,      NET_NEIGH_UNRES_QLEN,           "unres_qlen" },
276         { CTL_INT,      NET_NEIGH_PROXY_QLEN,           "proxy_qlen" },
277         /* NET_NEIGH_ANYCAST_DELAY "anycast_delay" no longer used */
278         /* NET_NEIGH_PROXY_DELAY "proxy_delay" no longer used */
279         /* NET_NEIGH_LOCKTIME "locktime" no longer used */
280         { CTL_INT,      NET_NEIGH_GC_INTERVAL,          "gc_interval" },
281         { CTL_INT,      NET_NEIGH_GC_THRESH1,           "gc_thresh1" },
282         { CTL_INT,      NET_NEIGH_GC_THRESH2,           "gc_thresh2" },
283         { CTL_INT,      NET_NEIGH_GC_THRESH3,           "gc_thresh3" },
284         { CTL_INT,      NET_NEIGH_RETRANS_TIME_MS,      "retrans_time_ms" },
285         { CTL_INT,      NET_NEIGH_REACHABLE_TIME_MS,    "base_reachable_time_ms" },
286         {}
287 };
288 
289 static const struct bin_table bin_net_neigh_table[] = {
290         { CTL_DIR,      NET_PROTO_CONF_DEFAULT, "default", bin_net_neigh_vars_table },
291         { CTL_DIR,      0, NULL, bin_net_neigh_vars_table },
292         {}
293 };
294 
295 static const struct bin_table bin_net_ipv4_netfilter_table[] = {
296         { CTL_INT,      NET_IPV4_NF_CONNTRACK_MAX,              "ip_conntrack_max" },
297 
298         /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT "ip_conntrack_tcp_timeout_syn_sent" no longer used */
299         /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV "ip_conntrack_tcp_timeout_syn_recv" no longer used */
300         /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED "ip_conntrack_tcp_timeout_established" no longer used */
301         /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT "ip_conntrack_tcp_timeout_fin_wait" no longer used */
302         /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT "ip_conntrack_tcp_timeout_close_wait" no longer used */
303         /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK "ip_conntrack_tcp_timeout_last_ack" no longer used */
304         /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT "ip_conntrack_tcp_timeout_time_wait" no longer used */
305         /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE "ip_conntrack_tcp_timeout_close" no longer used */
306 
307         /* NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT "ip_conntrack_udp_timeout" no longer used */
308         /* NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM "ip_conntrack_udp_timeout_stream" no longer used */
309         /* NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT "ip_conntrack_icmp_timeout" no longer used */
310         /* NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT "ip_conntrack_generic_timeout" no longer used */
311 
312         { CTL_INT,      NET_IPV4_NF_CONNTRACK_BUCKETS,          "ip_conntrack_buckets" },
313         { CTL_INT,      NET_IPV4_NF_CONNTRACK_LOG_INVALID,      "ip_conntrack_log_invalid" },
314         /* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS "ip_conntrack_tcp_timeout_max_retrans" no longer used */
315         { CTL_INT,      NET_IPV4_NF_CONNTRACK_TCP_LOOSE,        "ip_conntrack_tcp_loose" },
316         { CTL_INT,      NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL,   "ip_conntrack_tcp_be_liberal" },
317         { CTL_INT,      NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS,  "ip_conntrack_tcp_max_retrans" },
318 
319         /* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED "ip_conntrack_sctp_timeout_closed" no longer used */
320         /* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT "ip_conntrack_sctp_timeout_cookie_wait" no longer used */
321         /* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED "ip_conntrack_sctp_timeout_cookie_echoed" no longer used */
322         /* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED "ip_conntrack_sctp_timeout_established" no longer used */
323         /* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT "ip_conntrack_sctp_timeout_shutdown_sent" no longer used */
324         /* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD "ip_conntrack_sctp_timeout_shutdown_recd" no longer used */
325         /* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT "ip_conntrack_sctp_timeout_shutdown_ack_sent" no longer used */
326 
327         { CTL_INT,      NET_IPV4_NF_CONNTRACK_COUNT,            "ip_conntrack_count" },
328         { CTL_INT,      NET_IPV4_NF_CONNTRACK_CHECKSUM,         "ip_conntrack_checksum" },
329         {}
330 };
331 
332 static const struct bin_table bin_net_ipv4_table[] = {
333         {CTL_INT,       NET_IPV4_FORWARD,                       "ip_forward" },
334 
335         { CTL_DIR,      NET_IPV4_CONF,          "conf",         bin_net_ipv4_conf_table },
336         { CTL_DIR,      NET_IPV4_NEIGH,         "neigh",        bin_net_neigh_table },
337         { CTL_DIR,      NET_IPV4_ROUTE,         "route",        bin_net_ipv4_route_table },
338         /* NET_IPV4_FIB_HASH unused */
339         { CTL_DIR,      NET_IPV4_NETFILTER,     "netfilter",    bin_net_ipv4_netfilter_table },
340 
341         { CTL_INT,      NET_IPV4_TCP_TIMESTAMPS,                "tcp_timestamps" },
342         { CTL_INT,      NET_IPV4_TCP_WINDOW_SCALING,            "tcp_window_scaling" },
343         { CTL_INT,      NET_IPV4_TCP_SACK,                      "tcp_sack" },
344         { CTL_INT,      NET_IPV4_TCP_RETRANS_COLLAPSE,          "tcp_retrans_collapse" },
345         { CTL_INT,      NET_IPV4_DEFAULT_TTL,                   "ip_default_ttl" },
346         /* NET_IPV4_AUTOCONFIG unused */
347         { CTL_INT,      NET_IPV4_NO_PMTU_DISC,                  "ip_no_pmtu_disc" },
348         { CTL_INT,      NET_IPV4_NONLOCAL_BIND,                 "ip_nonlocal_bind" },
349         { CTL_INT,      NET_IPV4_TCP_SYN_RETRIES,               "tcp_syn_retries" },
350         { CTL_INT,      NET_TCP_SYNACK_RETRIES,                 "tcp_synack_retries" },
351         { CTL_INT,      NET_TCP_MAX_ORPHANS,                    "tcp_max_orphans" },
352         { CTL_INT,      NET_TCP_MAX_TW_BUCKETS,                 "tcp_max_tw_buckets" },
353         { CTL_INT,      NET_IPV4_DYNADDR,                       "ip_dynaddr" },
354         { CTL_INT,      NET_IPV4_TCP_KEEPALIVE_TIME,            "tcp_keepalive_time" },
355         { CTL_INT,      NET_IPV4_TCP_KEEPALIVE_PROBES,          "tcp_keepalive_probes" },
356         { CTL_INT,      NET_IPV4_TCP_KEEPALIVE_INTVL,           "tcp_keepalive_intvl" },
357         { CTL_INT,      NET_IPV4_TCP_RETRIES1,                  "tcp_retries1" },
358         { CTL_INT,      NET_IPV4_TCP_RETRIES2,                  "tcp_retries2" },
359         { CTL_INT,      NET_IPV4_TCP_FIN_TIMEOUT,               "tcp_fin_timeout" },
360         { CTL_INT,      NET_TCP_SYNCOOKIES,                     "tcp_syncookies" },
361         { CTL_INT,      NET_TCP_TW_RECYCLE,                     "tcp_tw_recycle" },
362         { CTL_INT,      NET_TCP_ABORT_ON_OVERFLOW,              "tcp_abort_on_overflow" },
363         { CTL_INT,      NET_TCP_STDURG,                         "tcp_stdurg" },
364         { CTL_INT,      NET_TCP_RFC1337,                        "tcp_rfc1337" },
365         { CTL_INT,      NET_TCP_MAX_SYN_BACKLOG,                "tcp_max_syn_backlog" },
366         { CTL_INT,      NET_IPV4_LOCAL_PORT_RANGE,              "ip_local_port_range" },
367         { CTL_INT,      NET_IPV4_IGMP_MAX_MEMBERSHIPS,          "igmp_max_memberships" },
368         { CTL_INT,      NET_IPV4_IGMP_MAX_MSF,                  "igmp_max_msf" },
369         { CTL_INT,      NET_IPV4_INET_PEER_THRESHOLD,           "inet_peer_threshold" },
370         { CTL_INT,      NET_IPV4_INET_PEER_MINTTL,              "inet_peer_minttl" },
371         { CTL_INT,      NET_IPV4_INET_PEER_MAXTTL,              "inet_peer_maxttl" },
372         { CTL_INT,      NET_IPV4_INET_PEER_GC_MINTIME,          "inet_peer_gc_mintime" },
373         { CTL_INT,      NET_IPV4_INET_PEER_GC_MAXTIME,          "inet_peer_gc_maxtime" },
374         { CTL_INT,      NET_TCP_ORPHAN_RETRIES,                 "tcp_orphan_retries" },
375         { CTL_INT,      NET_TCP_FACK,                           "tcp_fack" },
376         { CTL_INT,      NET_TCP_REORDERING,                     "tcp_reordering" },
377         { CTL_INT,      NET_TCP_ECN,                            "tcp_ecn" },
378         { CTL_INT,      NET_TCP_DSACK,                          "tcp_dsack" },
379         { CTL_INT,      NET_TCP_MEM,                            "tcp_mem" },
380         { CTL_INT,      NET_TCP_WMEM,                           "tcp_wmem" },
381         { CTL_INT,      NET_TCP_RMEM,                           "tcp_rmem" },
382         { CTL_INT,      NET_TCP_APP_WIN,                        "tcp_app_win" },
383         { CTL_INT,      NET_TCP_ADV_WIN_SCALE,                  "tcp_adv_win_scale" },
384         { CTL_INT,      NET_TCP_TW_REUSE,                       "tcp_tw_reuse" },
385         { CTL_INT,      NET_TCP_FRTO,                           "tcp_frto" },
386         { CTL_INT,      NET_TCP_FRTO_RESPONSE,                  "tcp_frto_response" },
387         { CTL_INT,      NET_TCP_LOW_LATENCY,                    "tcp_low_latency" },
388         { CTL_INT,      NET_TCP_NO_METRICS_SAVE,                "tcp_no_metrics_save" },
389         { CTL_INT,      NET_TCP_MODERATE_RCVBUF,                "tcp_moderate_rcvbuf" },
390         { CTL_INT,      NET_TCP_TSO_WIN_DIVISOR,                "tcp_tso_win_divisor" },
391         { CTL_STR,      NET_TCP_CONG_CONTROL,                   "tcp_congestion_control" },
392         { CTL_INT,      NET_TCP_MTU_PROBING,                    "tcp_mtu_probing" },
393         { CTL_INT,      NET_TCP_BASE_MSS,                       "tcp_base_mss" },
394         { CTL_INT,      NET_IPV4_TCP_WORKAROUND_SIGNED_WINDOWS, "tcp_workaround_signed_windows" },
395         { CTL_INT,      NET_TCP_SLOW_START_AFTER_IDLE,          "tcp_slow_start_after_idle" },
396         { CTL_INT,      NET_CIPSOV4_CACHE_ENABLE,               "cipso_cache_enable" },
397         { CTL_INT,      NET_CIPSOV4_CACHE_BUCKET_SIZE,          "cipso_cache_bucket_size" },
398         { CTL_INT,      NET_CIPSOV4_RBM_OPTFMT,                 "cipso_rbm_optfmt" },
399         { CTL_INT,      NET_CIPSOV4_RBM_STRICTVALID,            "cipso_rbm_strictvalid" },
400         /* NET_TCP_AVAIL_CONG_CONTROL "tcp_available_congestion_control" no longer used */
401         { CTL_STR,      NET_TCP_ALLOWED_CONG_CONTROL,           "tcp_allowed_congestion_control" },
402         { CTL_INT,      NET_TCP_MAX_SSTHRESH,                   "tcp_max_ssthresh" },
403 
404         { CTL_INT,      NET_IPV4_ICMP_ECHO_IGNORE_ALL,          "icmp_echo_ignore_all" },
405         { CTL_INT,      NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS,   "icmp_echo_ignore_broadcasts" },
406         { CTL_INT,      NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES,     "icmp_ignore_bogus_error_responses" },
407         { CTL_INT,      NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR,        "icmp_errors_use_inbound_ifaddr" },
408         { CTL_INT,      NET_IPV4_ICMP_RATELIMIT,                "icmp_ratelimit" },
409         { CTL_INT,      NET_IPV4_ICMP_RATEMASK,                 "icmp_ratemask" },
410 
411         { CTL_INT,      NET_IPV4_IPFRAG_HIGH_THRESH,            "ipfrag_high_thresh" },
412         { CTL_INT,      NET_IPV4_IPFRAG_LOW_THRESH,             "ipfrag_low_thresh" },
413         { CTL_INT,      NET_IPV4_IPFRAG_TIME,                   "ipfrag_time" },
414 
415         { CTL_INT,      NET_IPV4_IPFRAG_SECRET_INTERVAL,        "ipfrag_secret_interval" },
416         /* NET_IPV4_IPFRAG_MAX_DIST "ipfrag_max_dist" no longer used */
417 
418         { CTL_INT,      2088 /* NET_IPQ_QMAX */,                "ip_queue_maxlen" },
419 
420         /* NET_TCP_DEFAULT_WIN_SCALE unused */
421         /* NET_TCP_BIC_BETA unused */
422         /* NET_IPV4_TCP_MAX_KA_PROBES unused */
423         /* NET_IPV4_IP_MASQ_DEBUG unused */
424         /* NET_TCP_SYN_TAILDROP unused */
425         /* NET_IPV4_ICMP_SOURCEQUENCH_RATE unused */
426         /* NET_IPV4_ICMP_DESTUNREACH_RATE unused */
427         /* NET_IPV4_ICMP_TIMEEXCEED_RATE unused */
428         /* NET_IPV4_ICMP_PARAMPROB_RATE unused */
429         /* NET_IPV4_ICMP_ECHOREPLY_RATE unused */
430         /* NET_IPV4_ALWAYS_DEFRAG unused */
431         {}
432 };
433 
434 static const struct bin_table bin_net_ipx_table[] = {
435         { CTL_INT,      NET_IPX_PPROP_BROADCASTING,     "ipx_pprop_broadcasting" },
436         /* NET_IPX_FORWARDING unused */
437         {}
438 };
439 
440 static const struct bin_table bin_net_atalk_table[] = {
441         { CTL_INT,      NET_ATALK_AARP_EXPIRY_TIME,             "aarp-expiry-time" },
442         { CTL_INT,      NET_ATALK_AARP_TICK_TIME,               "aarp-tick-time" },
443         { CTL_INT,      NET_ATALK_AARP_RETRANSMIT_LIMIT,        "aarp-retransmit-limit" },
444         { CTL_INT,      NET_ATALK_AARP_RESOLVE_TIME,            "aarp-resolve-time" },
445         {},
446 };
447 
448 static const struct bin_table bin_net_netrom_table[] = {
449         { CTL_INT,      NET_NETROM_DEFAULT_PATH_QUALITY,                "default_path_quality" },
450         { CTL_INT,      NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER,      "obsolescence_count_initialiser" },
451         { CTL_INT,      NET_NETROM_NETWORK_TTL_INITIALISER,             "network_ttl_initialiser" },
452         { CTL_INT,      NET_NETROM_TRANSPORT_TIMEOUT,                   "transport_timeout" },
453         { CTL_INT,      NET_NETROM_TRANSPORT_MAXIMUM_TRIES,             "transport_maximum_tries" },
454         { CTL_INT,      NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY,         "transport_acknowledge_delay" },
455         { CTL_INT,      NET_NETROM_TRANSPORT_BUSY_DELAY,                "transport_busy_delay" },
456         { CTL_INT,      NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE,     "transport_requested_window_size" },
457         { CTL_INT,      NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT,       "transport_no_activity_timeout" },
458         { CTL_INT,      NET_NETROM_ROUTING_CONTROL,                     "routing_control" },
459         { CTL_INT,      NET_NETROM_LINK_FAILS_COUNT,                    "link_fails_count" },
460         { CTL_INT,      NET_NETROM_RESET,                               "reset" },
461         {}
462 };
463 
464 static const struct bin_table bin_net_ax25_param_table[] = {
465         { CTL_INT,      NET_AX25_IP_DEFAULT_MODE,       "ip_default_mode" },
466         { CTL_INT,      NET_AX25_DEFAULT_MODE,          "ax25_default_mode" },
467         { CTL_INT,      NET_AX25_BACKOFF_TYPE,          "backoff_type" },
468         { CTL_INT,      NET_AX25_CONNECT_MODE,          "connect_mode" },
469         { CTL_INT,      NET_AX25_STANDARD_WINDOW,       "standard_window_size" },
470         { CTL_INT,      NET_AX25_EXTENDED_WINDOW,       "extended_window_size" },
471         { CTL_INT,      NET_AX25_T1_TIMEOUT,            "t1_timeout" },
472         { CTL_INT,      NET_AX25_T2_TIMEOUT,            "t2_timeout" },
473         { CTL_INT,      NET_AX25_T3_TIMEOUT,            "t3_timeout" },
474         { CTL_INT,      NET_AX25_IDLE_TIMEOUT,          "idle_timeout" },
475         { CTL_INT,      NET_AX25_N2,                    "maximum_retry_count" },
476         { CTL_INT,      NET_AX25_PACLEN,                "maximum_packet_length" },
477         { CTL_INT,      NET_AX25_PROTOCOL,              "protocol" },
478         { CTL_INT,      NET_AX25_DAMA_SLAVE_TIMEOUT,    "dama_slave_timeout" },
479         {}
480 };
481 
482 static const struct bin_table bin_net_ax25_table[] = {
483         { CTL_DIR,      0, NULL, bin_net_ax25_param_table },
484         {}
485 };
486 
487 static const struct bin_table bin_net_rose_table[] = {
488         { CTL_INT,      NET_ROSE_RESTART_REQUEST_TIMEOUT,       "restart_request_timeout" },
489         { CTL_INT,      NET_ROSE_CALL_REQUEST_TIMEOUT,          "call_request_timeout" },
490         { CTL_INT,      NET_ROSE_RESET_REQUEST_TIMEOUT,         "reset_request_timeout" },
491         { CTL_INT,      NET_ROSE_CLEAR_REQUEST_TIMEOUT,         "clear_request_timeout" },
492         { CTL_INT,      NET_ROSE_ACK_HOLD_BACK_TIMEOUT,         "acknowledge_hold_back_timeout" },
493         { CTL_INT,      NET_ROSE_ROUTING_CONTROL,               "routing_control" },
494         { CTL_INT,      NET_ROSE_LINK_FAIL_TIMEOUT,             "link_fail_timeout" },
495         { CTL_INT,      NET_ROSE_MAX_VCS,                       "maximum_virtual_circuits" },
496         { CTL_INT,      NET_ROSE_WINDOW_SIZE,                   "window_size" },
497         { CTL_INT,      NET_ROSE_NO_ACTIVITY_TIMEOUT,           "no_activity_timeout" },
498         {}
499 };
500 
501 static const struct bin_table bin_net_ipv6_conf_var_table[] = {
502         { CTL_INT,      NET_IPV6_FORWARDING,                    "forwarding" },
503         { CTL_INT,      NET_IPV6_HOP_LIMIT,                     "hop_limit" },
504         { CTL_INT,      NET_IPV6_MTU,                           "mtu" },
505         { CTL_INT,      NET_IPV6_ACCEPT_RA,                     "accept_ra" },
506         { CTL_INT,      NET_IPV6_ACCEPT_REDIRECTS,              "accept_redirects" },
507         { CTL_INT,      NET_IPV6_AUTOCONF,                      "autoconf" },
508         { CTL_INT,      NET_IPV6_DAD_TRANSMITS,                 "dad_transmits" },
509         { CTL_INT,      NET_IPV6_RTR_SOLICITS,                  "router_solicitations" },
510         { CTL_INT,      NET_IPV6_RTR_SOLICIT_INTERVAL,          "router_solicitation_interval" },
511         { CTL_INT,      NET_IPV6_RTR_SOLICIT_DELAY,             "router_solicitation_delay" },
512         { CTL_INT,      NET_IPV6_USE_TEMPADDR,                  "use_tempaddr" },
513         { CTL_INT,      NET_IPV6_TEMP_VALID_LFT,                "temp_valid_lft" },
514         { CTL_INT,      NET_IPV6_TEMP_PREFERED_LFT,             "temp_prefered_lft" },
515         { CTL_INT,      NET_IPV6_REGEN_MAX_RETRY,               "regen_max_retry" },
516         { CTL_INT,      NET_IPV6_MAX_DESYNC_FACTOR,             "max_desync_factor" },
517         { CTL_INT,      NET_IPV6_MAX_ADDRESSES,                 "max_addresses" },
518         { CTL_INT,      NET_IPV6_FORCE_MLD_VERSION,             "force_mld_version" },
519         { CTL_INT,      NET_IPV6_ACCEPT_RA_DEFRTR,              "accept_ra_defrtr" },
520         { CTL_INT,      NET_IPV6_ACCEPT_RA_PINFO,               "accept_ra_pinfo" },
521         { CTL_INT,      NET_IPV6_ACCEPT_RA_RTR_PREF,            "accept_ra_rtr_pref" },
522         { CTL_INT,      NET_IPV6_RTR_PROBE_INTERVAL,            "router_probe_interval" },
523         { CTL_INT,      NET_IPV6_ACCEPT_RA_RT_INFO_MAX_PLEN,    "accept_ra_rt_info_max_plen" },
524         { CTL_INT,      NET_IPV6_PROXY_NDP,                     "proxy_ndp" },
525         { CTL_INT,      NET_IPV6_ACCEPT_SOURCE_ROUTE,           "accept_source_route" },
526         { CTL_INT,      NET_IPV6_ACCEPT_RA_FROM_LOCAL,          "accept_ra_from_local" },
527         {}
528 };
529 
530 static const struct bin_table bin_net_ipv6_conf_table[] = {
531         { CTL_DIR,      NET_PROTO_CONF_ALL,             "all",  bin_net_ipv6_conf_var_table },
532         { CTL_DIR,      NET_PROTO_CONF_DEFAULT,         "default", bin_net_ipv6_conf_var_table },
533         { CTL_DIR,      0, NULL, bin_net_ipv6_conf_var_table },
534         {}
535 };
536 
537 static const struct bin_table bin_net_ipv6_route_table[] = {
538         /* NET_IPV6_ROUTE_FLUSH "flush"  no longer used */
539         { CTL_INT,      NET_IPV6_ROUTE_GC_THRESH,               "gc_thresh" },
540         { CTL_INT,      NET_IPV6_ROUTE_MAX_SIZE,                "max_size" },
541         { CTL_INT,      NET_IPV6_ROUTE_GC_MIN_INTERVAL,         "gc_min_interval" },
542         { CTL_INT,      NET_IPV6_ROUTE_GC_TIMEOUT,              "gc_timeout" },
543         { CTL_INT,      NET_IPV6_ROUTE_GC_INTERVAL,             "gc_interval" },
544         { CTL_INT,      NET_IPV6_ROUTE_GC_ELASTICITY,           "gc_elasticity" },
545         { CTL_INT,      NET_IPV6_ROUTE_MTU_EXPIRES,             "mtu_expires" },
546         { CTL_INT,      NET_IPV6_ROUTE_MIN_ADVMSS,              "min_adv_mss" },
547         { CTL_INT,      NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS,      "gc_min_interval_ms" },
548         {}
549 };
550 
551 static const struct bin_table bin_net_ipv6_icmp_table[] = {
552         { CTL_INT,      NET_IPV6_ICMP_RATELIMIT,        "ratelimit" },
553         {}
554 };
555 
556 static const struct bin_table bin_net_ipv6_table[] = {
557         { CTL_DIR,      NET_IPV6_CONF,          "conf",         bin_net_ipv6_conf_table },
558         { CTL_DIR,      NET_IPV6_NEIGH,         "neigh",        bin_net_neigh_table },
559         { CTL_DIR,      NET_IPV6_ROUTE,         "route",        bin_net_ipv6_route_table },
560         { CTL_DIR,      NET_IPV6_ICMP,          "icmp",         bin_net_ipv6_icmp_table },
561         { CTL_INT,      NET_IPV6_BINDV6ONLY,            "bindv6only" },
562         { CTL_INT,      NET_IPV6_IP6FRAG_HIGH_THRESH,   "ip6frag_high_thresh" },
563         { CTL_INT,      NET_IPV6_IP6FRAG_LOW_THRESH,    "ip6frag_low_thresh" },
564         { CTL_INT,      NET_IPV6_IP6FRAG_TIME,          "ip6frag_time" },
565         { CTL_INT,      NET_IPV6_IP6FRAG_SECRET_INTERVAL,       "ip6frag_secret_interval" },
566         { CTL_INT,      NET_IPV6_MLD_MAX_MSF,           "mld_max_msf" },
567         { CTL_INT,      2088 /* IPQ_QMAX */,            "ip6_queue_maxlen" },
568         {}
569 };
570 
571 static const struct bin_table bin_net_x25_table[] = {
572         { CTL_INT,      NET_X25_RESTART_REQUEST_TIMEOUT,        "restart_request_timeout" },
573         { CTL_INT,      NET_X25_CALL_REQUEST_TIMEOUT,           "call_request_timeout" },
574         { CTL_INT,      NET_X25_RESET_REQUEST_TIMEOUT,  "reset_request_timeout" },
575         { CTL_INT,      NET_X25_CLEAR_REQUEST_TIMEOUT,  "clear_request_timeout" },
576         { CTL_INT,      NET_X25_ACK_HOLD_BACK_TIMEOUT,  "acknowledgement_hold_back_timeout" },
577         { CTL_INT,      NET_X25_FORWARD,                        "x25_forward" },
578         {}
579 };
580 
581 static const struct bin_table bin_net_tr_table[] = {
582         { CTL_INT,      NET_TR_RIF_TIMEOUT,     "rif_timeout" },
583         {}
584 };
585 
586 
587 static const struct bin_table bin_net_decnet_conf_vars[] = {
588         { CTL_INT,      NET_DECNET_CONF_DEV_FORWARDING, "forwarding" },
589         { CTL_INT,      NET_DECNET_CONF_DEV_PRIORITY,   "priority" },
590         { CTL_INT,      NET_DECNET_CONF_DEV_T2,         "t2" },
591         { CTL_INT,      NET_DECNET_CONF_DEV_T3,         "t3" },
592         {}
593 };
594 
595 static const struct bin_table bin_net_decnet_conf[] = {
596         { CTL_DIR, NET_DECNET_CONF_ETHER,    "ethernet", bin_net_decnet_conf_vars },
597         { CTL_DIR, NET_DECNET_CONF_GRE,      "ipgre",    bin_net_decnet_conf_vars },
598         { CTL_DIR, NET_DECNET_CONF_X25,      "x25",      bin_net_decnet_conf_vars },
599         { CTL_DIR, NET_DECNET_CONF_PPP,      "ppp",      bin_net_decnet_conf_vars },
600         { CTL_DIR, NET_DECNET_CONF_DDCMP,    "ddcmp",    bin_net_decnet_conf_vars },
601         { CTL_DIR, NET_DECNET_CONF_LOOPBACK, "loopback", bin_net_decnet_conf_vars },
602         { CTL_DIR, 0,                        NULL,       bin_net_decnet_conf_vars },
603         {}
604 };
605 
606 static const struct bin_table bin_net_decnet_table[] = {
607         { CTL_DIR,      NET_DECNET_CONF,                "conf", bin_net_decnet_conf },
608         { CTL_DNADR,    NET_DECNET_NODE_ADDRESS,        "node_address" },
609         { CTL_STR,      NET_DECNET_NODE_NAME,           "node_name" },
610         { CTL_STR,      NET_DECNET_DEFAULT_DEVICE,      "default_device" },
611         { CTL_INT,      NET_DECNET_TIME_WAIT,           "time_wait" },
612         { CTL_INT,      NET_DECNET_DN_COUNT,            "dn_count" },
613         { CTL_INT,      NET_DECNET_DI_COUNT,            "di_count" },
614         { CTL_INT,      NET_DECNET_DR_COUNT,            "dr_count" },
615         { CTL_INT,      NET_DECNET_DST_GC_INTERVAL,     "dst_gc_interval" },
616         { CTL_INT,      NET_DECNET_NO_FC_MAX_CWND,      "no_fc_max_cwnd" },
617         { CTL_INT,      NET_DECNET_MEM,         "decnet_mem" },
618         { CTL_INT,      NET_DECNET_RMEM,                "decnet_rmem" },
619         { CTL_INT,      NET_DECNET_WMEM,                "decnet_wmem" },
620         { CTL_INT,      NET_DECNET_DEBUG_LEVEL, "debug" },
621         {}
622 };
623 
624 static const struct bin_table bin_net_sctp_table[] = {
625         { CTL_INT,      NET_SCTP_RTO_INITIAL,           "rto_initial" },
626         { CTL_INT,      NET_SCTP_RTO_MIN,               "rto_min" },
627         { CTL_INT,      NET_SCTP_RTO_MAX,               "rto_max" },
628         { CTL_INT,      NET_SCTP_RTO_ALPHA,             "rto_alpha_exp_divisor" },
629         { CTL_INT,      NET_SCTP_RTO_BETA,              "rto_beta_exp_divisor" },
630         { CTL_INT,      NET_SCTP_VALID_COOKIE_LIFE,     "valid_cookie_life" },
631         { CTL_INT,      NET_SCTP_ASSOCIATION_MAX_RETRANS,       "association_max_retrans" },
632         { CTL_INT,      NET_SCTP_PATH_MAX_RETRANS,      "path_max_retrans" },
633         { CTL_INT,      NET_SCTP_MAX_INIT_RETRANSMITS,  "max_init_retransmits" },
634         { CTL_INT,      NET_SCTP_HB_INTERVAL,           "hb_interval" },
635         { CTL_INT,      NET_SCTP_PRESERVE_ENABLE,       "cookie_preserve_enable" },
636         { CTL_INT,      NET_SCTP_MAX_BURST,             "max_burst" },
637         { CTL_INT,      NET_SCTP_ADDIP_ENABLE,          "addip_enable" },
638         { CTL_INT,      NET_SCTP_PRSCTP_ENABLE,         "prsctp_enable" },
639         { CTL_INT,      NET_SCTP_SNDBUF_POLICY,         "sndbuf_policy" },
640         { CTL_INT,      NET_SCTP_SACK_TIMEOUT,          "sack_timeout" },
641         { CTL_INT,      NET_SCTP_RCVBUF_POLICY,         "rcvbuf_policy" },
642         {}
643 };
644 
645 static const struct bin_table bin_net_llc_llc2_timeout_table[] = {
646         { CTL_INT,      NET_LLC2_ACK_TIMEOUT,   "ack" },
647         { CTL_INT,      NET_LLC2_P_TIMEOUT,     "p" },
648         { CTL_INT,      NET_LLC2_REJ_TIMEOUT,   "rej" },
649         { CTL_INT,      NET_LLC2_BUSY_TIMEOUT,  "busy" },
650         {}
651 };
652 
653 static const struct bin_table bin_net_llc_station_table[] = {
654         { CTL_INT,      NET_LLC_STATION_ACK_TIMEOUT,    "ack_timeout" },
655         {}
656 };
657 
658 static const struct bin_table bin_net_llc_llc2_table[] = {
659         { CTL_DIR,      NET_LLC2,               "timeout",      bin_net_llc_llc2_timeout_table },
660         {}
661 };
662 
663 static const struct bin_table bin_net_llc_table[] = {
664         { CTL_DIR,      NET_LLC2,               "llc2",         bin_net_llc_llc2_table },
665         { CTL_DIR,      NET_LLC_STATION,        "station",      bin_net_llc_station_table },
666         {}
667 };
668 
669 static const struct bin_table bin_net_netfilter_table[] = {
670         { CTL_INT,      NET_NF_CONNTRACK_MAX,                   "nf_conntrack_max" },
671         /* NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT "nf_conntrack_tcp_timeout_syn_sent" no longer used */
672         /* NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV "nf_conntrack_tcp_timeout_syn_recv" no longer used */
673         /* NET_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED "nf_conntrack_tcp_timeout_established" no longer used */
674         /* NET_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT "nf_conntrack_tcp_timeout_fin_wait" no longer used */
675         /* NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT "nf_conntrack_tcp_timeout_close_wait" no longer used */
676         /* NET_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK "nf_conntrack_tcp_timeout_last_ack" no longer used */
677         /* NET_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT "nf_conntrack_tcp_timeout_time_wait" no longer used */
678         /* NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE "nf_conntrack_tcp_timeout_close" no longer used */
679         /* NET_NF_CONNTRACK_UDP_TIMEOUT "nf_conntrack_udp_timeout" no longer used */
680         /* NET_NF_CONNTRACK_UDP_TIMEOUT_STREAM "nf_conntrack_udp_timeout_stream" no longer used */
681         /* NET_NF_CONNTRACK_ICMP_TIMEOUT "nf_conntrack_icmp_timeout" no longer used */
682         /* NET_NF_CONNTRACK_GENERIC_TIMEOUT "nf_conntrack_generic_timeout" no longer used */
683         { CTL_INT,      NET_NF_CONNTRACK_BUCKETS,               "nf_conntrack_buckets" },
684         { CTL_INT,      NET_NF_CONNTRACK_LOG_INVALID,           "nf_conntrack_log_invalid" },
685         /* NET_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS "nf_conntrack_tcp_timeout_max_retrans" no longer used */
686         { CTL_INT,      NET_NF_CONNTRACK_TCP_LOOSE,             "nf_conntrack_tcp_loose" },
687         { CTL_INT,      NET_NF_CONNTRACK_TCP_BE_LIBERAL,        "nf_conntrack_tcp_be_liberal" },
688         { CTL_INT,      NET_NF_CONNTRACK_TCP_MAX_RETRANS,       "nf_conntrack_tcp_max_retrans" },
689         /* NET_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED "nf_conntrack_sctp_timeout_closed" no longer used */
690         /* NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT "nf_conntrack_sctp_timeout_cookie_wait" no longer used */
691         /* NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED "nf_conntrack_sctp_timeout_cookie_echoed" no longer used */
692         /* NET_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED "nf_conntrack_sctp_timeout_established" no longer used */
693         /* NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT "nf_conntrack_sctp_timeout_shutdown_sent" no longer used */
694         /* NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD "nf_conntrack_sctp_timeout_shutdown_recd" no longer used */
695         /* NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT "nf_conntrack_sctp_timeout_shutdown_ack_sent" no longer used */
696         { CTL_INT,      NET_NF_CONNTRACK_COUNT,                 "nf_conntrack_count" },
697         /* NET_NF_CONNTRACK_ICMPV6_TIMEOUT "nf_conntrack_icmpv6_timeout" no longer used */
698         /* NET_NF_CONNTRACK_FRAG6_TIMEOUT "nf_conntrack_frag6_timeout" no longer used */
699         { CTL_INT,      NET_NF_CONNTRACK_FRAG6_LOW_THRESH,      "nf_conntrack_frag6_low_thresh" },
700         { CTL_INT,      NET_NF_CONNTRACK_FRAG6_HIGH_THRESH,     "nf_conntrack_frag6_high_thresh" },
701         { CTL_INT,      NET_NF_CONNTRACK_CHECKSUM,              "nf_conntrack_checksum" },
702 
703         {}
704 };
705 
706 static const struct bin_table bin_net_irda_table[] = {
707         { CTL_INT,      NET_IRDA_DISCOVERY,             "discovery" },
708         { CTL_STR,      NET_IRDA_DEVNAME,               "devname" },
709         { CTL_INT,      NET_IRDA_DEBUG,                 "debug" },
710         { CTL_INT,      NET_IRDA_FAST_POLL,             "fast_poll_increase" },
711         { CTL_INT,      NET_IRDA_DISCOVERY_SLOTS,       "discovery_slots" },
712         { CTL_INT,      NET_IRDA_DISCOVERY_TIMEOUT,     "discovery_timeout" },
713         { CTL_INT,      NET_IRDA_SLOT_TIMEOUT,          "slot_timeout" },
714         { CTL_INT,      NET_IRDA_MAX_BAUD_RATE,         "max_baud_rate" },
715         { CTL_INT,      NET_IRDA_MIN_TX_TURN_TIME,      "min_tx_turn_time" },
716         { CTL_INT,      NET_IRDA_MAX_TX_DATA_SIZE,      "max_tx_data_size" },
717         { CTL_INT,      NET_IRDA_MAX_TX_WINDOW,         "max_tx_window" },
718         { CTL_INT,      NET_IRDA_MAX_NOREPLY_TIME,      "max_noreply_time" },
719         { CTL_INT,      NET_IRDA_WARN_NOREPLY_TIME,     "warn_noreply_time" },
720         { CTL_INT,      NET_IRDA_LAP_KEEPALIVE_TIME,    "lap_keepalive_time" },
721         {}
722 };
723 
724 static const struct bin_table bin_net_table[] = {
725         { CTL_DIR,      NET_CORE,               "core",         bin_net_core_table },
726         /* NET_ETHER not used */
727         /* NET_802 not used */
728         { CTL_DIR,      NET_UNIX,               "unix",         bin_net_unix_table },
729         { CTL_DIR,      NET_IPV4,               "ipv4",         bin_net_ipv4_table },
730         { CTL_DIR,      NET_IPX,                "ipx",          bin_net_ipx_table },
731         { CTL_DIR,      NET_ATALK,              "appletalk",    bin_net_atalk_table },
732         { CTL_DIR,      NET_NETROM,             "netrom",       bin_net_netrom_table },
733         { CTL_DIR,      NET_AX25,               "ax25",         bin_net_ax25_table },
734         /*  NET_BRIDGE "bridge" no longer used */
735         { CTL_DIR,      NET_ROSE,               "rose",         bin_net_rose_table },
736         { CTL_DIR,      NET_IPV6,               "ipv6",         bin_net_ipv6_table },
737         { CTL_DIR,      NET_X25,                "x25",          bin_net_x25_table },
738         { CTL_DIR,      NET_TR,                 "token-ring",   bin_net_tr_table },
739         { CTL_DIR,      NET_DECNET,             "decnet",       bin_net_decnet_table },
740         /*  NET_ECONET not used */
741         { CTL_DIR,      NET_SCTP,               "sctp",         bin_net_sctp_table },
742         { CTL_DIR,      NET_LLC,                "llc",          bin_net_llc_table },
743         { CTL_DIR,      NET_NETFILTER,          "netfilter",    bin_net_netfilter_table },
744         /* NET_DCCP "dccp" no longer used */
745         { CTL_DIR,      NET_IRDA,               "irda",         bin_net_irda_table },
746         { CTL_INT,      2089,                   "nf_conntrack_max" },
747         {}
748 };
749 
750 static const struct bin_table bin_fs_quota_table[] = {
751         { CTL_INT,      FS_DQ_LOOKUPS,          "lookups" },
752         { CTL_INT,      FS_DQ_DROPS,            "drops" },
753         { CTL_INT,      FS_DQ_READS,            "reads" },
754         { CTL_INT,      FS_DQ_WRITES,           "writes" },
755         { CTL_INT,      FS_DQ_CACHE_HITS,       "cache_hits" },
756         { CTL_INT,      FS_DQ_ALLOCATED,        "allocated_dquots" },
757         { CTL_INT,      FS_DQ_FREE,             "free_dquots" },
758         { CTL_INT,      FS_DQ_SYNCS,            "syncs" },
759         { CTL_INT,      FS_DQ_WARNINGS,         "warnings" },
760         {}
761 };
762 
763 static const struct bin_table bin_fs_xfs_table[] = {
764         { CTL_INT,      XFS_SGID_INHERIT,       "irix_sgid_inherit" },
765         { CTL_INT,      XFS_SYMLINK_MODE,       "irix_symlink_mode" },
766         { CTL_INT,      XFS_PANIC_MASK,         "panic_mask" },
767 
768         { CTL_INT,      XFS_ERRLEVEL,           "error_level" },
769         { CTL_INT,      XFS_SYNCD_TIMER,        "xfssyncd_centisecs" },
770         { CTL_INT,      XFS_INHERIT_SYNC,       "inherit_sync" },
771         { CTL_INT,      XFS_INHERIT_NODUMP,     "inherit_nodump" },
772         { CTL_INT,      XFS_INHERIT_NOATIME,    "inherit_noatime" },
773         { CTL_INT,      XFS_BUF_TIMER,          "xfsbufd_centisecs" },
774         { CTL_INT,      XFS_BUF_AGE,            "age_buffer_centisecs" },
775         { CTL_INT,      XFS_INHERIT_NOSYM,      "inherit_nosymlinks" },
776         { CTL_INT,      XFS_ROTORSTEP,  "rotorstep" },
777         { CTL_INT,      XFS_INHERIT_NODFRG,     "inherit_nodefrag" },
778         { CTL_INT,      XFS_FILESTREAM_TIMER,   "filestream_centisecs" },
779         { CTL_INT,      XFS_STATS_CLEAR,        "stats_clear" },
780         {}
781 };
782 
783 static const struct bin_table bin_fs_ocfs2_nm_table[] = {
784         { CTL_STR,      1, "hb_ctl_path" },
785         {}
786 };
787 
788 static const struct bin_table bin_fs_ocfs2_table[] = {
789         { CTL_DIR,      1,      "nm",   bin_fs_ocfs2_nm_table },
790         {}
791 };
792 
793 static const struct bin_table bin_inotify_table[] = {
794         { CTL_INT,      INOTIFY_MAX_USER_INSTANCES,     "max_user_instances" },
795         { CTL_INT,      INOTIFY_MAX_USER_WATCHES,       "max_user_watches" },
796         { CTL_INT,      INOTIFY_MAX_QUEUED_EVENTS,      "max_queued_events" },
797         {}
798 };
799 
800 static const struct bin_table bin_fs_table[] = {
801         { CTL_INT,      FS_NRINODE,             "inode-nr" },
802         { CTL_INT,      FS_STATINODE,           "inode-state" },
803         /* FS_MAXINODE unused */
804         /* FS_NRDQUOT unused */
805         /* FS_MAXDQUOT unused */
806         /* FS_NRFILE "file-nr" no longer used */
807         { CTL_INT,      FS_MAXFILE,             "file-max" },
808         { CTL_INT,      FS_DENTRY,              "dentry-state" },
809         /* FS_NRSUPER unused */
810         /* FS_MAXUPSER unused */
811         { CTL_INT,      FS_OVERFLOWUID,         "overflowuid" },
812         { CTL_INT,      FS_OVERFLOWGID,         "overflowgid" },
813         { CTL_INT,      FS_LEASES,              "leases-enable" },
814         { CTL_INT,      FS_DIR_NOTIFY,          "dir-notify-enable" },
815         { CTL_INT,      FS_LEASE_TIME,          "lease-break-time" },
816         { CTL_DIR,      FS_DQSTATS,             "quota",        bin_fs_quota_table },
817         { CTL_DIR,      FS_XFS,                 "xfs",          bin_fs_xfs_table },
818         { CTL_ULONG,    FS_AIO_NR,              "aio-nr" },
819         { CTL_ULONG,    FS_AIO_MAX_NR,          "aio-max-nr" },
820         { CTL_DIR,      FS_INOTIFY,             "inotify",      bin_inotify_table },
821         { CTL_DIR,      FS_OCFS2,               "ocfs2",        bin_fs_ocfs2_table },
822         { CTL_INT,      KERN_SETUID_DUMPABLE,   "suid_dumpable" },
823         {}
824 };
825 
826 static const struct bin_table bin_ipmi_table[] = {
827         { CTL_INT,      DEV_IPMI_POWEROFF_POWERCYCLE,   "poweroff_powercycle" },
828         {}
829 };
830 
831 static const struct bin_table bin_mac_hid_files[] = {
832         /* DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES unused */
833         /* DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES unused */
834         { CTL_INT,      DEV_MAC_HID_MOUSE_BUTTON_EMULATION,     "mouse_button_emulation" },
835         { CTL_INT,      DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE,      "mouse_button2_keycode" },
836         { CTL_INT,      DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE,      "mouse_button3_keycode" },
837         /* DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES unused */
838         {}
839 };
840 
841 static const struct bin_table bin_raid_table[] = {
842         { CTL_INT,      DEV_RAID_SPEED_LIMIT_MIN,       "speed_limit_min" },
843         { CTL_INT,      DEV_RAID_SPEED_LIMIT_MAX,       "speed_limit_max" },
844         {}
845 };
846 
847 static const struct bin_table bin_scsi_table[] = {
848         { CTL_INT, DEV_SCSI_LOGGING_LEVEL, "logging_level" },
849         {}
850 };
851 
852 static const struct bin_table bin_dev_table[] = {
853         /* DEV_CDROM    "cdrom" no longer used */
854         /* DEV_HWMON unused */
855         /* DEV_PARPORT  "parport" no longer used */
856         { CTL_DIR,      DEV_RAID,       "raid",         bin_raid_table },
857         { CTL_DIR,      DEV_MAC_HID,    "mac_hid",      bin_mac_hid_files },
858         { CTL_DIR,      DEV_SCSI,       "scsi",         bin_scsi_table },
859         { CTL_DIR,      DEV_IPMI,       "ipmi",         bin_ipmi_table },
860         {}
861 };
862 
863 static const struct bin_table bin_bus_isa_table[] = {
864         { CTL_INT,      BUS_ISA_MEM_BASE,       "membase" },
865         { CTL_INT,      BUS_ISA_PORT_BASE,      "portbase" },
866         { CTL_INT,      BUS_ISA_PORT_SHIFT,     "portshift" },
867         {}
868 };
869 
870 static const struct bin_table bin_bus_table[] = {
871         { CTL_DIR,      CTL_BUS_ISA,    "isa",  bin_bus_isa_table },
872         {}
873 };
874 
875 
876 static const struct bin_table bin_s390dbf_table[] = {
877         { CTL_INT,      5678 /* CTL_S390DBF_STOPPABLE */, "debug_stoppable" },
878         { CTL_INT,      5679 /* CTL_S390DBF_ACTIVE */,    "debug_active" },
879         {}
880 };
881 
882 static const struct bin_table bin_sunrpc_table[] = {
883         /* CTL_RPCDEBUG "rpc_debug"  no longer used */
884         /* CTL_NFSDEBUG "nfs_debug"  no longer used */
885         /* CTL_NFSDDEBUG "nfsd_debug" no longer used  */
886         /* CTL_NLMDEBUG "nlm_debug" no longer used */
887 
888         { CTL_INT,      CTL_SLOTTABLE_UDP,      "udp_slot_table_entries" },
889         { CTL_INT,      CTL_SLOTTABLE_TCP,      "tcp_slot_table_entries" },
890         { CTL_INT,      CTL_MIN_RESVPORT,       "min_resvport" },
891         { CTL_INT,      CTL_MAX_RESVPORT,       "max_resvport" },
892         {}
893 };
894 
895 static const struct bin_table bin_pm_table[] = {
896         /* frv specific */
897         /* 1 == CTL_PM_SUSPEND  "suspend"  no longer used" */
898         { CTL_INT,      2 /* CTL_PM_CMODE */,           "cmode" },
899         { CTL_INT,      3 /* CTL_PM_P0 */,              "p0" },
900         { CTL_INT,      4 /* CTL_PM_CM */,              "cm" },
901         {}
902 };
903 
904 static const struct bin_table bin_root_table[] = {
905         { CTL_DIR,      CTL_KERN,       "kernel",       bin_kern_table },
906         { CTL_DIR,      CTL_VM,         "vm",           bin_vm_table },
907         { CTL_DIR,      CTL_NET,        "net",          bin_net_table },
908         /* CTL_PROC not used */
909         { CTL_DIR,      CTL_FS,         "fs",           bin_fs_table },
910         /* CTL_DEBUG "debug" no longer used */
911         { CTL_DIR,      CTL_DEV,        "dev",          bin_dev_table },
912         { CTL_DIR,      CTL_BUS,        "bus",          bin_bus_table },
913         { CTL_DIR,      CTL_ABI,        "abi" },
914         /* CTL_CPU not used */
915         /* CTL_ARLAN "arlan" no longer used */
916         { CTL_DIR,      CTL_S390DBF,    "s390dbf",      bin_s390dbf_table },
917         { CTL_DIR,      CTL_SUNRPC,     "sunrpc",       bin_sunrpc_table },
918         { CTL_DIR,      CTL_PM,         "pm",           bin_pm_table },
919         {}
920 };
921 
922 static ssize_t bin_dir(struct file *file,
923         void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
924 {
925         return -ENOTDIR;
926 }
927 
928 
929 static ssize_t bin_string(struct file *file,
930         void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
931 {
932         ssize_t result, copied = 0;
933 
934         if (oldval && oldlen) {
935                 char __user *lastp;
936                 loff_t pos = 0;
937                 int ch;
938 
939                 result = vfs_read(file, oldval, oldlen, &pos);
940                 if (result < 0)
941                         goto out;
942 
943                 copied = result;
944                 lastp = oldval + copied - 1;
945 
946                 result = -EFAULT;
947                 if (get_user(ch, lastp))
948                         goto out;
949 
950                 /* Trim off the trailing newline */
951                 if (ch == '\n') {
952                         result = -EFAULT;
953                         if (put_user('\0', lastp))
954                                 goto out;
955                         copied -= 1;
956                 }
957         }
958 
959         if (newval && newlen) {
960                 loff_t pos = 0;
961 
962                 result = vfs_write(file, newval, newlen, &pos);
963                 if (result < 0)
964                         goto out;
965         }
966 
967         result = copied;
968 out:
969         return result;
970 }
971 
972 static ssize_t bin_intvec(struct file *file,
973         void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
974 {
975         ssize_t copied = 0;
976         char *buffer;
977         ssize_t result;
978 
979         result = -ENOMEM;
980         buffer = kmalloc(BUFSZ, GFP_KERNEL);
981         if (!buffer)
982                 goto out;
983 
984         if (oldval && oldlen) {
985                 unsigned __user *vec = oldval;
986                 size_t length = oldlen / sizeof(*vec);
987                 char *str, *end;
988                 int i;
989 
990                 result = kernel_read(file, 0, buffer, BUFSZ - 1);
991                 if (result < 0)
992                         goto out_kfree;
993 
994                 str = buffer;
995                 end = str + result;
996                 *end++ = '\0';
997                 for (i = 0; i < length; i++) {
998                         unsigned long value;
999 
1000                         value = simple_strtoul(str, &str, 10);
1001                         while (isspace(*str))
1002                                 str++;
1003                         
1004                         result = -EFAULT;
1005                         if (put_user(value, vec + i))
1006                                 goto out_kfree;
1007 
1008                         copied += sizeof(*vec);
1009                         if (!isdigit(*str))
1010                                 break;
1011                 }
1012         }
1013 
1014         if (newval && newlen) {
1015                 unsigned __user *vec = newval;
1016                 size_t length = newlen / sizeof(*vec);
1017                 char *str, *end;
1018                 int i;
1019 
1020                 str = buffer;
1021                 end = str + BUFSZ;
1022                 for (i = 0; i < length; i++) {
1023                         unsigned long value;
1024 
1025                         result = -EFAULT;
1026                         if (get_user(value, vec + i))
1027                                 goto out_kfree;
1028 
1029                         str += scnprintf(str, end - str, "%lu\t", value);
1030                 }
1031 
1032                 result = kernel_write(file, buffer, str - buffer, 0);
1033                 if (result < 0)
1034                         goto out_kfree;
1035         }
1036         result = copied;
1037 out_kfree:
1038         kfree(buffer);
1039 out:
1040         return result;
1041 }
1042 
1043 static ssize_t bin_ulongvec(struct file *file,
1044         void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1045 {
1046         ssize_t copied = 0;
1047         char *buffer;
1048         ssize_t result;
1049 
1050         result = -ENOMEM;
1051         buffer = kmalloc(BUFSZ, GFP_KERNEL);
1052         if (!buffer)
1053                 goto out;
1054 
1055         if (oldval && oldlen) {
1056                 unsigned long __user *vec = oldval;
1057                 size_t length = oldlen / sizeof(*vec);
1058                 char *str, *end;
1059                 int i;
1060 
1061                 result = kernel_read(file, 0, buffer, BUFSZ - 1);
1062                 if (result < 0)
1063                         goto out_kfree;
1064 
1065                 str = buffer;
1066                 end = str + result;
1067                 *end++ = '\0';
1068                 for (i = 0; i < length; i++) {
1069                         unsigned long value;
1070 
1071                         value = simple_strtoul(str, &str, 10);
1072                         while (isspace(*str))
1073                                 str++;
1074                         
1075                         result = -EFAULT;
1076                         if (put_user(value, vec + i))
1077                                 goto out_kfree;
1078 
1079                         copied += sizeof(*vec);
1080                         if (!isdigit(*str))
1081                                 break;
1082                 }
1083         }
1084 
1085         if (newval && newlen) {
1086                 unsigned long __user *vec = newval;
1087                 size_t length = newlen / sizeof(*vec);
1088                 char *str, *end;
1089                 int i;
1090 
1091                 str = buffer;
1092                 end = str + BUFSZ;
1093                 for (i = 0; i < length; i++) {
1094                         unsigned long value;
1095 
1096                         result = -EFAULT;
1097                         if (get_user(value, vec + i))
1098                                 goto out_kfree;
1099 
1100                         str += scnprintf(str, end - str, "%lu\t", value);
1101                 }
1102 
1103                 result = kernel_write(file, buffer, str - buffer, 0);
1104                 if (result < 0)
1105                         goto out_kfree;
1106         }
1107         result = copied;
1108 out_kfree:
1109         kfree(buffer);
1110 out:
1111         return result;
1112 }
1113 
1114 static ssize_t bin_uuid(struct file *file,
1115         void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1116 {
1117         ssize_t result, copied = 0;
1118 
1119         /* Only supports reads */
1120         if (oldval && oldlen) {
1121                 char buf[UUID_STRING_LEN + 1];
1122                 uuid_be uuid;
1123 
1124                 result = kernel_read(file, 0, buf, sizeof(buf) - 1);
1125                 if (result < 0)
1126                         goto out;
1127 
1128                 buf[result] = '\0';
1129 
1130                 result = -EIO;
1131                 if (uuid_be_to_bin(buf, &uuid))
1132                         goto out;
1133 
1134                 if (oldlen > 16)
1135                         oldlen = 16;
1136 
1137                 result = -EFAULT;
1138                 if (copy_to_user(oldval, &uuid, oldlen))
1139                         goto out;
1140 
1141                 copied = oldlen;
1142         }
1143         result = copied;
1144 out:
1145         return result;
1146 }
1147 
1148 static ssize_t bin_dn_node_address(struct file *file,
1149         void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1150 {
1151         ssize_t result, copied = 0;
1152 
1153         if (oldval && oldlen) {
1154                 char buf[15], *nodep;
1155                 unsigned long area, node;
1156                 __le16 dnaddr;
1157 
1158                 result = kernel_read(file, 0, buf, sizeof(buf) - 1);
1159                 if (result < 0)
1160                         goto out;
1161 
1162                 buf[result] = '\0';
1163 
1164                 /* Convert the decnet address to binary */
1165                 result = -EIO;
1166                 nodep = strchr(buf, '.');
1167                 if (!nodep)
1168                         goto out;
1169                 ++nodep;
1170 
1171                 area = simple_strtoul(buf, NULL, 10);
1172                 node = simple_strtoul(nodep, NULL, 10);
1173 
1174                 result = -EIO;
1175                 if ((area > 63)||(node > 1023))
1176                         goto out;
1177 
1178                 dnaddr = cpu_to_le16((area << 10) | node);
1179 
1180                 result = -EFAULT;
1181                 if (put_user(dnaddr, (__le16 __user *)oldval))
1182                         goto out;
1183 
1184                 copied = sizeof(dnaddr);
1185         }
1186 
1187         if (newval && newlen) {
1188                 __le16 dnaddr;
1189                 char buf[15];
1190                 int len;
1191 
1192                 result = -EINVAL;
1193                 if (newlen != sizeof(dnaddr))
1194                         goto out;
1195 
1196                 result = -EFAULT;
1197                 if (get_user(dnaddr, (__le16 __user *)newval))
1198                         goto out;
1199 
1200                 len = scnprintf(buf, sizeof(buf), "%hu.%hu",
1201                                 le16_to_cpu(dnaddr) >> 10,
1202                                 le16_to_cpu(dnaddr) & 0x3ff);
1203 
1204                 result = kernel_write(file, buf, len, 0);
1205                 if (result < 0)
1206                         goto out;
1207         }
1208 
1209         result = copied;
1210 out:
1211         return result;
1212 }
1213 
1214 static const struct bin_table *get_sysctl(const int *name, int nlen, char *path)
1215 {
1216         const struct bin_table *table = &bin_root_table[0];
1217         int ctl_name;
1218 
1219         /* The binary sysctl tables have a small maximum depth so
1220          * there is no danger of overflowing our path as it PATH_MAX
1221          * bytes long.
1222          */
1223         memcpy(path, "sys/", 4);
1224         path += 4;
1225 
1226 repeat:
1227         if (!nlen)
1228                 return ERR_PTR(-ENOTDIR);
1229         ctl_name = *name;
1230         name++;
1231         nlen--;
1232         for ( ; table->convert; table++) {
1233                 int len = 0;
1234 
1235                 /*
1236                  * For a wild card entry map from ifindex to network
1237                  * device name.
1238                  */
1239                 if (!table->ctl_name) {
1240 #ifdef CONFIG_NET
1241                         struct net *net = current->nsproxy->net_ns;
1242                         struct net_device *dev;
1243                         dev = dev_get_by_index(net, ctl_name);
1244                         if (dev) {
1245                                 len = strlen(dev->name);
1246                                 memcpy(path, dev->name, len);
1247                                 dev_put(dev);
1248                         }
1249 #endif
1250                 /* Use the well known sysctl number to proc name mapping */
1251                 } else if (ctl_name == table->ctl_name) {
1252                         len = strlen(table->procname);
1253                         memcpy(path, table->procname, len);
1254                 }
1255                 if (len) {
1256                         path += len;
1257                         if (table->child) {
1258                                 *path++ = '/';
1259                                 table = table->child;
1260                                 goto repeat;
1261                         }
1262                         *path = '\0';
1263                         return table;
1264                 }
1265         }
1266         return ERR_PTR(-ENOTDIR);
1267 }
1268 
1269 static char *sysctl_getname(const int *name, int nlen, const struct bin_table **tablep)
1270 {
1271         char *tmp, *result;
1272 
1273         result = ERR_PTR(-ENOMEM);
1274         tmp = __getname();
1275         if (tmp) {
1276                 const struct bin_table *table = get_sysctl(name, nlen, tmp);
1277                 result = tmp;
1278                 *tablep = table;
1279                 if (IS_ERR(table)) {
1280                         __putname(tmp);
1281                         result = ERR_CAST(table);
1282                 }
1283         }
1284         return result;
1285 }
1286 
1287 static ssize_t binary_sysctl(const int *name, int nlen,
1288         void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1289 {
1290         const struct bin_table *table = NULL;
1291         struct vfsmount *mnt;
1292         struct file *file;
1293         ssize_t result;
1294         char *pathname;
1295         int flags;
1296 
1297         pathname = sysctl_getname(name, nlen, &table);
1298         result = PTR_ERR(pathname);
1299         if (IS_ERR(pathname))
1300                 goto out;
1301 
1302         /* How should the sysctl be accessed? */
1303         if (oldval && oldlen && newval && newlen) {
1304                 flags = O_RDWR;
1305         } else if (newval && newlen) {
1306                 flags = O_WRONLY;
1307         } else if (oldval && oldlen) {
1308                 flags = O_RDONLY;
1309         } else {
1310                 result = 0;
1311                 goto out_putname;
1312         }
1313 
1314         mnt = task_active_pid_ns(current)->proc_mnt;
1315         file = file_open_root(mnt->mnt_root, mnt, pathname, flags, 0);
1316         result = PTR_ERR(file);
1317         if (IS_ERR(file))
1318                 goto out_putname;
1319 
1320         result = table->convert(file, oldval, oldlen, newval, newlen);
1321 
1322         fput(file);
1323 out_putname:
1324         __putname(pathname);
1325 out:
1326         return result;
1327 }
1328 
1329 
1330 #else /* CONFIG_SYSCTL_SYSCALL */
1331 
1332 static ssize_t binary_sysctl(const int *name, int nlen,
1333         void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1334 {
1335         return -ENOSYS;
1336 }
1337 
1338 #endif /* CONFIG_SYSCTL_SYSCALL */
1339 
1340 
1341 static void deprecated_sysctl_warning(const int *name, int nlen)
1342 {
1343         int i;
1344 
1345         /*
1346          * CTL_KERN/KERN_VERSION is used by older glibc and cannot
1347          * ever go away.
1348          */
1349         if (name[0] == CTL_KERN && name[1] == KERN_VERSION)
1350                 return;
1351 
1352         if (printk_ratelimit()) {
1353                 printk(KERN_INFO
1354                         "warning: process `%s' used the deprecated sysctl "
1355                         "system call with ", current->comm);
1356                 for (i = 0; i < nlen; i++)
1357                         printk(KERN_CONT "%d.", name[i]);
1358                 printk(KERN_CONT "\n");
1359         }
1360         return;
1361 }
1362 
1363 #define WARN_ONCE_HASH_BITS 8
1364 #define WARN_ONCE_HASH_SIZE (1<<WARN_ONCE_HASH_BITS)
1365 
1366 static DECLARE_BITMAP(warn_once_bitmap, WARN_ONCE_HASH_SIZE);
1367 
1368 #define FNV32_OFFSET 2166136261U
1369 #define FNV32_PRIME 0x01000193
1370 
1371 /*
1372  * Print each legacy sysctl (approximately) only once.
1373  * To avoid making the tables non-const use a external
1374  * hash-table instead.
1375  * Worst case hash collision: 6, but very rarely.
1376  * NOTE! We don't use the SMP-safe bit tests. We simply
1377  * don't care enough.
1378  */
1379 static void warn_on_bintable(const int *name, int nlen)
1380 {
1381         int i;
1382         u32 hash = FNV32_OFFSET;
1383 
1384         for (i = 0; i < nlen; i++)
1385                 hash = (hash ^ name[i]) * FNV32_PRIME;
1386         hash %= WARN_ONCE_HASH_SIZE;
1387         if (__test_and_set_bit(hash, warn_once_bitmap))
1388                 return;
1389         deprecated_sysctl_warning(name, nlen);
1390 }
1391 
1392 static ssize_t do_sysctl(int __user *args_name, int nlen,
1393         void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1394 {
1395         int name[CTL_MAXNAME];
1396         int i;
1397 
1398         /* Check args->nlen. */
1399         if (nlen < 0 || nlen > CTL_MAXNAME)
1400                 return -ENOTDIR;
1401         /* Read in the sysctl name for simplicity */
1402         for (i = 0; i < nlen; i++)
1403                 if (get_user(name[i], args_name + i))
1404                         return -EFAULT;
1405 
1406         warn_on_bintable(name, nlen);
1407 
1408         return binary_sysctl(name, nlen, oldval, oldlen, newval, newlen);
1409 }
1410 
1411 SYSCALL_DEFINE1(sysctl, struct __sysctl_args __user *, args)
1412 {
1413         struct __sysctl_args tmp;
1414         size_t oldlen = 0;
1415         ssize_t result;
1416 
1417         if (copy_from_user(&tmp, args, sizeof(tmp)))
1418                 return -EFAULT;
1419 
1420         if (tmp.oldval && !tmp.oldlenp)
1421                 return -EFAULT;
1422 
1423         if (tmp.oldlenp && get_user(oldlen, tmp.oldlenp))
1424                 return -EFAULT;
1425 
1426         result = do_sysctl(tmp.name, tmp.nlen, tmp.oldval, oldlen,
1427                            tmp.newval, tmp.newlen);
1428 
1429         if (result >= 0) {
1430                 oldlen = result;
1431                 result = 0;
1432         }
1433 
1434         if (tmp.oldlenp && put_user(oldlen, tmp.oldlenp))
1435                 return -EFAULT;
1436 
1437         return result;
1438 }
1439 
1440 
1441 #ifdef CONFIG_COMPAT
1442 
1443 struct compat_sysctl_args {
1444         compat_uptr_t   name;
1445         int             nlen;
1446         compat_uptr_t   oldval;
1447         compat_uptr_t   oldlenp;
1448         compat_uptr_t   newval;
1449         compat_size_t   newlen;
1450         compat_ulong_t  __unused[4];
1451 };
1452 
1453 COMPAT_SYSCALL_DEFINE1(sysctl, struct compat_sysctl_args __user *, args)
1454 {
1455         struct compat_sysctl_args tmp;
1456         compat_size_t __user *compat_oldlenp;
1457         size_t oldlen = 0;
1458         ssize_t result;
1459 
1460         if (copy_from_user(&tmp, args, sizeof(tmp)))
1461                 return -EFAULT;
1462 
1463         if (tmp.oldval && !tmp.oldlenp)
1464                 return -EFAULT;
1465 
1466         compat_oldlenp = compat_ptr(tmp.oldlenp);
1467         if (compat_oldlenp && get_user(oldlen, compat_oldlenp))
1468                 return -EFAULT;
1469 
1470         result = do_sysctl(compat_ptr(tmp.name), tmp.nlen,
1471                            compat_ptr(tmp.oldval), oldlen,
1472                            compat_ptr(tmp.newval), tmp.newlen);
1473 
1474         if (result >= 0) {
1475                 oldlen = result;
1476                 result = 0;
1477         }
1478 
1479         if (compat_oldlenp && put_user(oldlen, compat_oldlenp))
1480                 return -EFAULT;
1481 
1482         return result;
1483 }
1484 
1485 #endif /* CONFIG_COMPAT */
1486 

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