kernel/sysctl_binary.c

   1 #include <linux/stat.h>
   2 #include <linux/sysctl.h>
   3 #include "../fs/xfs/xfs_sysctl.h"
   4 #include <linux/sunrpc/debug.h>
   5 #include <linux/string.h>
   6 #include <linux/syscalls.h>
   7 #include <linux/namei.h>
   8 #include <linux/mount.h>
   9 #include <linux/fs.h>
  10 #include <linux/nsproxy.h>
  11 #include <linux/pid_namespace.h>
  12 #include <linux/file.h>
  13 #include <linux/ctype.h>
  14 #include <linux/netdevice.h>
  15 #include <linux/kernel.h>
  16 #include <linux/slab.h>
  17 #include <linux/compat.h>
  18
  19 #ifdef CONFIG_SYSCTL_SYSCALL
  20
  21 struct bin_table;
  22 typedef ssize_t bin_convert_t(struct file *file,
  23         void __user *oldval, size_t oldlen, void __user *newval, size_t newlen);
  24
  25 static bin_convert_t bin_dir;
  26 static bin_convert_t bin_string;
  27 static bin_convert_t bin_intvec;
  28 static bin_convert_t bin_ulongvec;
  29 static bin_convert_t bin_uuid;
  30 static bin_convert_t bin_dn_node_address;
  31
  32 #define CTL_DIR   bin_dir
  33 #define CTL_STR   bin_string
  34 #define CTL_INT   bin_intvec
  35 #define CTL_ULONG bin_ulongvec
  36 #define CTL_UUID  bin_uuid
  37 #define CTL_DNADR bin_dn_node_address
  38
  39 #define BUFSZ 256
  40
  41 struct bin_table {
  42         bin_convert_t           *convert;
  43         int                     ctl_name;
  44         const char              *procname;
  45         const struct bin_table  *child;
  46 };
  47
  48 static const struct bin_table bin_random_table[] = {
  49         { CTL_INT,      RANDOM_POOLSIZE,        "poolsize" },
  50         { CTL_INT,      RANDOM_ENTROPY_COUNT,   "entropy_avail" },
  51         { CTL_INT,      RANDOM_READ_THRESH,     "read_wakeup_threshold" },
  52         { CTL_INT,      RANDOM_WRITE_THRESH,    "write_wakeup_threshold" },
  53         { CTL_UUID,     RANDOM_BOOT_ID,         "boot_id" },
  54         { CTL_UUID,     RANDOM_UUID,            "uuid" },
  55         {}
  56 };
  57
  58 static const struct bin_table bin_pty_table[] = {
  59         { CTL_INT,      PTY_MAX,        "max" },
  60         { CTL_INT,      PTY_NR,         "nr" },
  61         {}
  62 };
  63
  64 static const struct bin_table bin_kern_table[] = {
  65         { CTL_STR,      KERN_OSTYPE,                    "ostype" },
  66         { CTL_STR,      KERN_OSRELEASE,                 "osrelease" },
  67         /* KERN_OSREV not used */
  68         { CTL_STR,      KERN_VERSION,                   "version" },
  69         /* KERN_SECUREMASK not used */
  70         /* KERN_PROF not used */
  71         { CTL_STR,      KERN_NODENAME,                  "hostname" },
  72         { CTL_STR,      KERN_DOMAINNAME,                "domainname" },
  73
  74         { CTL_INT,      KERN_PANIC,                     "panic" },
  75         { CTL_INT,      KERN_REALROOTDEV,               "real-root-dev" },
  76
  77         { CTL_STR,      KERN_SPARC_REBOOT,              "reboot-cmd" },
  78         { CTL_INT,      KERN_CTLALTDEL,                 "ctrl-alt-del" },
  79         { CTL_INT,      KERN_PRINTK,                    "printk" },
  80
  81         /* KERN_NAMETRANS not used */
  82         /* KERN_PPC_HTABRECLAIM not used */
  83         /* KERN_PPC_ZEROPAGED not used */
  84         { CTL_INT,      KERN_PPC_POWERSAVE_NAP,         "powersave-nap" },
  85
  86         { CTL_STR,      KERN_MODPROBE,                  "modprobe" },
  87         { CTL_INT,      KERN_SG_BIG_BUFF,               "sg-big-buff" },
  88         { CTL_INT,      KERN_ACCT,                      "acct" },
  89         /* KERN_PPC_L2CR "l2cr" no longer used */
  90
  91         /* KERN_RTSIGNR not used */
  92         /* KERN_RTSIGMAX not used */
  93
  94         { CTL_ULONG,    KERN_SHMMAX,                    "shmmax" },
  95         { CTL_INT,      KERN_MSGMAX,                    "msgmax" },
  96         { CTL_INT,      KERN_MSGMNB,                    "msgmnb" },
  97         /* KERN_MSGPOOL not used*/
  98         { CTL_INT,      KERN_SYSRQ,                     "sysrq" },
  99         { CTL_INT,      KERN_MAX_THREADS,               "threads-max" },
 100         { CTL_DIR,      KERN_RANDOM,                    "random",       bin_random_table },
 101         { CTL_ULONG,    KERN_SHMALL,                    "shmall" },
 102         { CTL_INT,      KERN_MSGMNI,                    "msgmni" },
 103         { CTL_INT,      KERN_SEM,                       "sem" },
 104         { CTL_INT,      KERN_SPARC_STOP_A,              "stop-a" },
 105         { CTL_INT,      KERN_SHMMNI,                    "shmmni" },
 106
 107         { CTL_INT,      KERN_OVERFLOWUID,               "overflowuid" },
 108         { CTL_INT,      KERN_OVERFLOWGID,               "overflowgid" },
 109
 110         { CTL_STR,      KERN_HOTPLUG,                   "hotplug", },
 111         { CTL_INT,      KERN_IEEE_EMULATION_WARNINGS,   "ieee_emulation_warnings" },
 112
 113         { CTL_INT,      KERN_S390_USER_DEBUG_LOGGING,   "userprocess_debug" },
 114         { CTL_INT,      KERN_CORE_USES_PID,             "core_uses_pid" },
 115         /* KERN_TAINTED "tainted" no longer used */
 116         { CTL_INT,      KERN_CADPID,                    "cad_pid" },
 117         { CTL_INT,      KERN_PIDMAX,                    "pid_max" },
 118         { CTL_STR,      KERN_CORE_PATTERN,              "core_pattern" },
 119         { CTL_INT,      KERN_PANIC_ON_OOPS,             "panic_on_oops" },
 120         { CTL_INT,      KERN_HPPA_PWRSW,                "soft-power" },
 121         { CTL_INT,      KERN_HPPA_UNALIGNED,            "unaligned-trap" },
 122
 123         { CTL_INT,      KERN_PRINTK_RATELIMIT,          "printk_ratelimit" },
 124         { CTL_INT,      KERN_PRINTK_RATELIMIT_BURST,    "printk_ratelimit_burst" },
 125
 126         { CTL_DIR,      KERN_PTY,                       "pty",          bin_pty_table },
 127         { CTL_INT,      KERN_NGROUPS_MAX,               "ngroups_max" },
 128         { CTL_INT,      KERN_SPARC_SCONS_PWROFF,        "scons-poweroff" },
 129         /* KERN_HZ_TIMER "hz_timer" no longer used */
 130         { CTL_INT,      KERN_UNKNOWN_NMI_PANIC,         "unknown_nmi_panic" },
 131         { CTL_INT,      KERN_BOOTLOADER_TYPE,           "bootloader_type" },
 132         { CTL_INT,      KERN_RANDOMIZE,                 "randomize_va_space" },
 133
 134         { CTL_INT,      KERN_SPIN_RETRY,                "spin_retry" },
 135         /* KERN_ACPI_VIDEO_FLAGS "acpi_video_flags" no longer used */
 136         { CTL_INT,      KERN_IA64_UNALIGNED,            "ignore-unaligned-usertrap" },
 137         { CTL_INT,      KERN_COMPAT_LOG,                "compat-log" },
 138         { CTL_INT,      KERN_MAX_LOCK_DEPTH,            "max_lock_depth" },
 139         { CTL_INT,      KERN_PANIC_ON_NMI,              "panic_on_unrecovered_nmi" },
 140         { CTL_INT,      KERN_PANIC_ON_WARN,             "panic_on_warn" },
 141         { CTL_INT,      KERN_BOOT_REASON,               "boot_reason" },
 142         { CTL_INT,      KERN_COLD_BOOT,                 "cold_boot" },
 143         {}
 144 };
 145
 146 static const struct bin_table bin_vm_table[] = {
 147         { CTL_INT,      VM_OVERCOMMIT_MEMORY,           "overcommit_memory" },
 148         { CTL_INT,      VM_PAGE_CLUSTER,                "page-cluster" },
 149         { CTL_INT,      VM_DIRTY_BACKGROUND,            "dirty_background_ratio" },
 150         { CTL_INT,      VM_DIRTY_RATIO,                 "dirty_ratio" },
 151         /* VM_DIRTY_WB_CS "dirty_writeback_centisecs" no longer used */
 152         /* VM_DIRTY_EXPIRE_CS "dirty_expire_centisecs" no longer used */
 153         /* VM_NR_PDFLUSH_THREADS "nr_pdflush_threads" no longer used */
 154         { CTL_INT,      VM_OVERCOMMIT_RATIO,            "overcommit_ratio" },
 155         /* VM_PAGEBUF unused */
 156         /* VM_HUGETLB_PAGES "nr_hugepages" no longer used */
 157         { CTL_INT,      VM_SWAPPINESS,                  "swappiness" },
 158         { CTL_INT,      VM_LOWMEM_RESERVE_RATIO,        "lowmem_reserve_ratio" },
 159         { CTL_INT,      VM_MIN_FREE_KBYTES,             "min_free_kbytes" },
 160         { CTL_INT,      VM_MAX_MAP_COUNT,               "max_map_count" },
 161         { CTL_INT,      VM_LAPTOP_MODE,                 "laptop_mode" },
 162         { CTL_INT,      VM_BLOCK_DUMP,                  "block_dump" },
 163         { CTL_INT,      VM_HUGETLB_GROUP,               "hugetlb_shm_group" },
 164         { CTL_INT,      VM_VFS_CACHE_PRESSURE,  "vfs_cache_pressure" },
 165         { CTL_INT,      VM_LEGACY_VA_LAYOUT,            "legacy_va_layout" },
 166         /* VM_SWAP_TOKEN_TIMEOUT unused */
 167         { CTL_INT,      VM_DROP_PAGECACHE,              "drop_caches" },
 168         { CTL_INT,      VM_PERCPU_PAGELIST_FRACTION,    "percpu_pagelist_fraction" },
 169         { CTL_INT,      VM_ZONE_RECLAIM_MODE,           "zone_reclaim_mode" },
 170         { CTL_INT,      VM_MIN_UNMAPPED,                "min_unmapped_ratio" },
 171         { CTL_INT,      VM_PANIC_ON_OOM,                "panic_on_oom" },
 172         { CTL_INT,      VM_VDSO_ENABLED,                "vdso_enabled" },
 173         { CTL_INT,      VM_MIN_SLAB,                    "min_slab_ratio" },
 174
 175         {}
 176 };
 177
 178 static const struct bin_table bin_net_core_table[] = {
 179         { CTL_INT,      NET_CORE_WMEM_MAX,      "wmem_max" },
 180         { CTL_INT,      NET_CORE_RMEM_MAX,      "rmem_max" },
 181         { CTL_INT,      NET_CORE_WMEM_DEFAULT,  "wmem_default" },
 182         { CTL_INT,      NET_CORE_RMEM_DEFAULT,  "rmem_default" },
 183         /* NET_CORE_DESTROY_DELAY unused */
 184         { CTL_INT,      NET_CORE_MAX_BACKLOG,   "netdev_max_backlog" },
 185         /* NET_CORE_FASTROUTE unused */
 186         { CTL_INT,      NET_CORE_MSG_COST,      "message_cost" },
 187         { CTL_INT,      NET_CORE_MSG_BURST,     "message_burst" },
 188         { CTL_INT,      NET_CORE_OPTMEM_MAX,    "optmem_max" },
 189         /* NET_CORE_HOT_LIST_LENGTH unused */
 190         /* NET_CORE_DIVERT_VERSION unused */
 191         /* NET_CORE_NO_CONG_THRESH unused */
 192         /* NET_CORE_NO_CONG unused */
 193         /* NET_CORE_LO_CONG unused */
 194         /* NET_CORE_MOD_CONG unused */
 195         { CTL_INT,      NET_CORE_DEV_WEIGHT,    "dev_weight" },
 196         { CTL_INT,      NET_CORE_SOMAXCONN,     "somaxconn" },
 197         { CTL_INT,      NET_CORE_BUDGET,        "netdev_budget" },
 198         { CTL_INT,      NET_CORE_AEVENT_ETIME,  "xfrm_aevent_etime" },
 199         { CTL_INT,      NET_CORE_AEVENT_RSEQTH, "xfrm_aevent_rseqth" },
 200         { CTL_INT,      NET_CORE_WARNINGS,      "warnings" },
 201         {},
 202 };
 203
 204 static const struct bin_table bin_net_unix_table[] = {
 205         /* NET_UNIX_DESTROY_DELAY unused */
 206         /* NET_UNIX_DELETE_DELAY unused */
 207         { CTL_INT,      NET_UNIX_MAX_DGRAM_QLEN,        "max_dgram_qlen" },
 208         {}
 209 };
 210
 211 static const struct bin_table bin_net_ipv4_route_table[] = {
 212         { CTL_INT,      NET_IPV4_ROUTE_FLUSH,                   "flush" },
 213         /* NET_IPV4_ROUTE_MIN_DELAY "min_delay" no longer used */
 214         /* NET_IPV4_ROUTE_MAX_DELAY "max_delay" no longer used */
 215         { CTL_INT,      NET_IPV4_ROUTE_GC_THRESH,               "gc_thresh" },
 216         { CTL_INT,      NET_IPV4_ROUTE_MAX_SIZE,                "max_size" },
 217         { CTL_INT,      NET_IPV4_ROUTE_GC_MIN_INTERVAL,         "gc_min_interval" },
 218         { CTL_INT,      NET_IPV4_ROUTE_GC_MIN_INTERVAL_MS,      "gc_min_interval_ms" },
 219         { CTL_INT,      NET_IPV4_ROUTE_GC_TIMEOUT,              "gc_timeout" },
 220         /* NET_IPV4_ROUTE_GC_INTERVAL "gc_interval" no longer used */
 221         { CTL_INT,      NET_IPV4_ROUTE_REDIRECT_LOAD,           "redirect_load" },
 222         { CTL_INT,      NET_IPV4_ROUTE_REDIRECT_NUMBER,         "redirect_number" },
 223         { CTL_INT,      NET_IPV4_ROUTE_REDIRECT_SILENCE,        "redirect_silence" },
 224         { CTL_INT,      NET_IPV4_ROUTE_ERROR_COST,              "error_cost" },
 225         { CTL_INT,      NET_IPV4_ROUTE_ERROR_BURST,             "error_burst" },
 226         { CTL_INT,      NET_IPV4_ROUTE_GC_ELASTICITY,           "gc_elasticity" },
 227         { CTL_INT,      NET_IPV4_ROUTE_MTU_EXPIRES,             "mtu_expires" },
 228         { CTL_INT,      NET_IPV4_ROUTE_MIN_PMTU,                "min_pmtu" },
 229         { CTL_INT,      NET_IPV4_ROUTE_MIN_ADVMSS,              "min_adv_mss" },
 230         {}
 231 };
 232
 233 static const struct bin_table bin_net_ipv4_conf_vars_table[] = {
 234         { CTL_INT,      NET_IPV4_CONF_FORWARDING,               "forwarding" },
 235         { CTL_INT,      NET_IPV4_CONF_MC_FORWARDING,            "mc_forwarding" },
 236
 237         { CTL_INT,      NET_IPV4_CONF_ACCEPT_REDIRECTS,         "accept_redirects" },
 238         { CTL_INT,      NET_IPV4_CONF_SECURE_REDIRECTS,         "secure_redirects" },
 239         { CTL_INT,      NET_IPV4_CONF_SEND_REDIRECTS,           "send_redirects" },
 240         { CTL_INT,      NET_IPV4_CONF_SHARED_MEDIA,             "shared_media" },
 241         { CTL_INT,      NET_IPV4_CONF_RP_FILTER,                "rp_filter" },
 242         { CTL_INT,      NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE,      "accept_source_route" },
 243         { CTL_INT,      NET_IPV4_CONF_PROXY_ARP,                "proxy_arp" },
 244         { CTL_INT,      NET_IPV4_CONF_MEDIUM_ID,                "medium_id" },
 245         { CTL_INT,      NET_IPV4_CONF_BOOTP_RELAY,              "bootp_relay" },
 246         { CTL_INT,      NET_IPV4_CONF_LOG_MARTIANS,             "log_martians" },
 247         { CTL_INT,      NET_IPV4_CONF_TAG,                      "tag" },
 248         { CTL_INT,      NET_IPV4_CONF_ARPFILTER,                "arp_filter" },
 249         { CTL_INT,      NET_IPV4_CONF_ARP_ANNOUNCE,             "arp_announce" },
 250         { CTL_INT,      NET_IPV4_CONF_ARP_IGNORE,               "arp_ignore" },
 251         { CTL_INT,      NET_IPV4_CONF_ARP_ACCEPT,               "arp_accept" },
 252         { CTL_INT,      NET_IPV4_CONF_ARP_NOTIFY,               "arp_notify" },
 253
 254         { CTL_INT,      NET_IPV4_CONF_NOXFRM,                   "disable_xfrm" },
 255         { CTL_INT,      NET_IPV4_CONF_NOPOLICY,                 "disable_policy" },
 256         { CTL_INT,      NET_IPV4_CONF_FORCE_IGMP_VERSION,       "force_igmp_version" },
 257         { CTL_INT,      NET_IPV4_CONF_PROMOTE_SECONDARIES,      "promote_secondaries" },
 258         { CTL_INT, NET_IPV4_CONF_NF_IPV4_DEFRAG_SKIP, "nf_ipv4_defrag_skip" },
 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         { CTL_INT,      NET_IPV6_ACCEPT_RA_PREFIX_ROUTE,        "accept_ra_prefix_route" },
 530         {}
 531 };
 532
 533 static const struct bin_table bin_net_ipv6_conf_table[] = {
 534         { CTL_DIR,      NET_PROTO_CONF_ALL,             "all",  bin_net_ipv6_conf_var_table },
 535         { CTL_DIR,      NET_PROTO_CONF_DEFAULT,         "default", bin_net_ipv6_conf_var_table },
 536         { CTL_DIR,      0, NULL, bin_net_ipv6_conf_var_table },
 537         {}
 538 };
 539
 540 static const struct bin_table bin_net_ipv6_route_table[] = {
 541         /* NET_IPV6_ROUTE_FLUSH "flush"  no longer used */
 542         { CTL_INT,      NET_IPV6_ROUTE_GC_THRESH,               "gc_thresh" },
 543         { CTL_INT,      NET_IPV6_ROUTE_MAX_SIZE,                "max_size" },
 544         { CTL_INT,      NET_IPV6_ROUTE_GC_MIN_INTERVAL,         "gc_min_interval" },
 545         { CTL_INT,      NET_IPV6_ROUTE_GC_TIMEOUT,              "gc_timeout" },
 546         { CTL_INT,      NET_IPV6_ROUTE_GC_INTERVAL,             "gc_interval" },
 547         { CTL_INT,      NET_IPV6_ROUTE_GC_ELASTICITY,           "gc_elasticity" },
 548         { CTL_INT,      NET_IPV6_ROUTE_MTU_EXPIRES,             "mtu_expires" },
 549         { CTL_INT,      NET_IPV6_ROUTE_MIN_ADVMSS,              "min_adv_mss" },
 550         { CTL_INT,      NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS,      "gc_min_interval_ms" },
 551         {}
 552 };
 553
 554 static const struct bin_table bin_net_ipv6_icmp_table[] = {
 555         { CTL_INT,      NET_IPV6_ICMP_RATELIMIT,        "ratelimit" },
 556         {}
 557 };
 558
 559 static const struct bin_table bin_net_ipv6_table[] = {
 560         { CTL_DIR,      NET_IPV6_CONF,          "conf",         bin_net_ipv6_conf_table },
 561         { CTL_DIR,      NET_IPV6_NEIGH,         "neigh",        bin_net_neigh_table },
 562         { CTL_DIR,      NET_IPV6_ROUTE,         "route",        bin_net_ipv6_route_table },
 563         { CTL_DIR,      NET_IPV6_ICMP,          "icmp",         bin_net_ipv6_icmp_table },
 564         { CTL_INT,      NET_IPV6_BINDV6ONLY,            "bindv6only" },
 565         { CTL_INT,      NET_IPV6_IP6FRAG_HIGH_THRESH,   "ip6frag_high_thresh" },
 566         { CTL_INT,      NET_IPV6_IP6FRAG_LOW_THRESH,    "ip6frag_low_thresh" },
 567         { CTL_INT,      NET_IPV6_IP6FRAG_TIME,          "ip6frag_time" },
 568         { CTL_INT,      NET_IPV6_IP6FRAG_SECRET_INTERVAL,       "ip6frag_secret_interval" },
 569         { CTL_INT,      NET_IPV6_MLD_MAX_MSF,           "mld_max_msf" },
 570         { CTL_INT,      2088 /* IPQ_QMAX */,            "ip6_queue_maxlen" },
 571         {}
 572 };
 573
 574 static const struct bin_table bin_net_x25_table[] = {
 575         { CTL_INT,      NET_X25_RESTART_REQUEST_TIMEOUT,        "restart_request_timeout" },
 576         { CTL_INT,      NET_X25_CALL_REQUEST_TIMEOUT,           "call_request_timeout" },
 577         { CTL_INT,      NET_X25_RESET_REQUEST_TIMEOUT,  "reset_request_timeout" },
 578         { CTL_INT,      NET_X25_CLEAR_REQUEST_TIMEOUT,  "clear_request_timeout" },
 579         { CTL_INT,      NET_X25_ACK_HOLD_BACK_TIMEOUT,  "acknowledgement_hold_back_timeout" },
 580         { CTL_INT,      NET_X25_FORWARD,                        "x25_forward" },
 581         {}
 582 };
 583
 584 static const struct bin_table bin_net_tr_table[] = {
 585         { CTL_INT,      NET_TR_RIF_TIMEOUT,     "rif_timeout" },
 586         {}
 587 };
 588
 589
 590 static const struct bin_table bin_net_decnet_conf_vars[] = {
 591         { CTL_INT,      NET_DECNET_CONF_DEV_FORWARDING, "forwarding" },
 592         { CTL_INT,      NET_DECNET_CONF_DEV_PRIORITY,   "priority" },
 593         { CTL_INT,      NET_DECNET_CONF_DEV_T2,         "t2" },
 594         { CTL_INT,      NET_DECNET_CONF_DEV_T3,         "t3" },
 595         {}
 596 };
 597
 598 static const struct bin_table bin_net_decnet_conf[] = {
 599         { CTL_DIR, NET_DECNET_CONF_ETHER,    "ethernet", bin_net_decnet_conf_vars },
 600         { CTL_DIR, NET_DECNET_CONF_GRE,      "ipgre",    bin_net_decnet_conf_vars },
 601         { CTL_DIR, NET_DECNET_CONF_X25,      "x25",      bin_net_decnet_conf_vars },
 602         { CTL_DIR, NET_DECNET_CONF_PPP,      "ppp",      bin_net_decnet_conf_vars },
 603         { CTL_DIR, NET_DECNET_CONF_DDCMP,    "ddcmp",    bin_net_decnet_conf_vars },
 604         { CTL_DIR, NET_DECNET_CONF_LOOPBACK, "loopback", bin_net_decnet_conf_vars },
 605         { CTL_DIR, 0,                        NULL,       bin_net_decnet_conf_vars },
 606         {}
 607 };
 608
 609 static const struct bin_table bin_net_decnet_table[] = {
 610         { CTL_DIR,      NET_DECNET_CONF,                "conf", bin_net_decnet_conf },
 611         { CTL_DNADR,    NET_DECNET_NODE_ADDRESS,        "node_address" },
 612         { CTL_STR,      NET_DECNET_NODE_NAME,           "node_name" },
 613         { CTL_STR,      NET_DECNET_DEFAULT_DEVICE,      "default_device" },
 614         { CTL_INT,      NET_DECNET_TIME_WAIT,           "time_wait" },
 615         { CTL_INT,      NET_DECNET_DN_COUNT,            "dn_count" },
 616         { CTL_INT,      NET_DECNET_DI_COUNT,            "di_count" },
 617         { CTL_INT,      NET_DECNET_DR_COUNT,            "dr_count" },
 618         { CTL_INT,      NET_DECNET_DST_GC_INTERVAL,     "dst_gc_interval" },
 619         { CTL_INT,      NET_DECNET_NO_FC_MAX_CWND,      "no_fc_max_cwnd" },
 620         { CTL_INT,      NET_DECNET_MEM,         "decnet_mem" },
 621         { CTL_INT,      NET_DECNET_RMEM,                "decnet_rmem" },
 622         { CTL_INT,      NET_DECNET_WMEM,                "decnet_wmem" },
 623         { CTL_INT,      NET_DECNET_DEBUG_LEVEL, "debug" },
 624         {}
 625 };
 626
 627 static const struct bin_table bin_net_sctp_table[] = {
 628         { CTL_INT,      NET_SCTP_RTO_INITIAL,           "rto_initial" },
 629         { CTL_INT,      NET_SCTP_RTO_MIN,               "rto_min" },
 630         { CTL_INT,      NET_SCTP_RTO_MAX,               "rto_max" },
 631         { CTL_INT,      NET_SCTP_RTO_ALPHA,             "rto_alpha_exp_divisor" },
 632         { CTL_INT,      NET_SCTP_RTO_BETA,              "rto_beta_exp_divisor" },
 633         { CTL_INT,      NET_SCTP_VALID_COOKIE_LIFE,     "valid_cookie_life" },
 634         { CTL_INT,      NET_SCTP_ASSOCIATION_MAX_RETRANS,       "association_max_retrans" },
 635         { CTL_INT,      NET_SCTP_PATH_MAX_RETRANS,      "path_max_retrans" },
 636         { CTL_INT,      NET_SCTP_MAX_INIT_RETRANSMITS,  "max_init_retransmits" },
 637         { CTL_INT,      NET_SCTP_HB_INTERVAL,           "hb_interval" },
 638         { CTL_INT,      NET_SCTP_PRESERVE_ENABLE,       "cookie_preserve_enable" },
 639         { CTL_INT,      NET_SCTP_MAX_BURST,             "max_burst" },
 640         { CTL_INT,      NET_SCTP_ADDIP_ENABLE,          "addip_enable" },
 641         { CTL_INT,      NET_SCTP_PRSCTP_ENABLE,         "prsctp_enable" },
 642         { CTL_INT,      NET_SCTP_SNDBUF_POLICY,         "sndbuf_policy" },
 643         { CTL_INT,      NET_SCTP_SACK_TIMEOUT,          "sack_timeout" },
 644         { CTL_INT,      NET_SCTP_RCVBUF_POLICY,         "rcvbuf_policy" },
 645         {}
 646 };
 647
 648 static const struct bin_table bin_net_llc_llc2_timeout_table[] = {
 649         { CTL_INT,      NET_LLC2_ACK_TIMEOUT,   "ack" },
 650         { CTL_INT,      NET_LLC2_P_TIMEOUT,     "p" },
 651         { CTL_INT,      NET_LLC2_REJ_TIMEOUT,   "rej" },
 652         { CTL_INT,      NET_LLC2_BUSY_TIMEOUT,  "busy" },
 653         {}
 654 };
 655
 656 static const struct bin_table bin_net_llc_station_table[] = {
 657         { CTL_INT,      NET_LLC_STATION_ACK_TIMEOUT,    "ack_timeout" },
 658         {}
 659 };
 660
 661 static const struct bin_table bin_net_llc_llc2_table[] = {
 662         { CTL_DIR,      NET_LLC2,               "timeout",      bin_net_llc_llc2_timeout_table },
 663         {}
 664 };
 665
 666 static const struct bin_table bin_net_llc_table[] = {
 667         { CTL_DIR,      NET_LLC2,               "llc2",         bin_net_llc_llc2_table },
 668         { CTL_DIR,      NET_LLC_STATION,        "station",      bin_net_llc_station_table },
 669         {}
 670 };
 671
 672 static const struct bin_table bin_net_netfilter_table[] = {
 673         { CTL_INT,      NET_NF_CONNTRACK_MAX,                   "nf_conntrack_max" },
 674         /* NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT "nf_conntrack_tcp_timeout_syn_sent" no longer used */
 675         /* NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV "nf_conntrack_tcp_timeout_syn_recv" no longer used */
 676         /* NET_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED "nf_conntrack_tcp_timeout_established" no longer used */
 677         /* NET_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT "nf_conntrack_tcp_timeout_fin_wait" no longer used */
 678         /* NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT "nf_conntrack_tcp_timeout_close_wait" no longer used */
 679         /* NET_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK "nf_conntrack_tcp_timeout_last_ack" no longer used */
 680         /* NET_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT "nf_conntrack_tcp_timeout_time_wait" no longer used */
 681         /* NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE "nf_conntrack_tcp_timeout_close" no longer used */
 682         /* NET_NF_CONNTRACK_UDP_TIMEOUT "nf_conntrack_udp_timeout" no longer used */
 683         /* NET_NF_CONNTRACK_UDP_TIMEOUT_STREAM "nf_conntrack_udp_timeout_stream" no longer used */
 684         /* NET_NF_CONNTRACK_ICMP_TIMEOUT "nf_conntrack_icmp_timeout" no longer used */
 685         /* NET_NF_CONNTRACK_GENERIC_TIMEOUT "nf_conntrack_generic_timeout" no longer used */
 686         { CTL_INT,      NET_NF_CONNTRACK_BUCKETS,               "nf_conntrack_buckets" },
 687         { CTL_INT,      NET_NF_CONNTRACK_LOG_INVALID,           "nf_conntrack_log_invalid" },
 688         /* NET_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS "nf_conntrack_tcp_timeout_max_retrans" no longer used */
 689         { CTL_INT,      NET_NF_CONNTRACK_TCP_LOOSE,             "nf_conntrack_tcp_loose" },
 690         { CTL_INT,      NET_NF_CONNTRACK_TCP_BE_LIBERAL,        "nf_conntrack_tcp_be_liberal" },
 691         { CTL_INT,      NET_NF_CONNTRACK_TCP_MAX_RETRANS,       "nf_conntrack_tcp_max_retrans" },
 692         /* NET_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED "nf_conntrack_sctp_timeout_closed" no longer used */
 693         /* NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT "nf_conntrack_sctp_timeout_cookie_wait" no longer used */
 694         /* NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED "nf_conntrack_sctp_timeout_cookie_echoed" no longer used */
 695         /* NET_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED "nf_conntrack_sctp_timeout_established" no longer used */
 696         /* NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT "nf_conntrack_sctp_timeout_shutdown_sent" no longer used */
 697         /* NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD "nf_conntrack_sctp_timeout_shutdown_recd" no longer used */
 698         /* NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT "nf_conntrack_sctp_timeout_shutdown_ack_sent" no longer used */
 699         { CTL_INT,      NET_NF_CONNTRACK_COUNT,                 "nf_conntrack_count" },
 700         /* NET_NF_CONNTRACK_ICMPV6_TIMEOUT "nf_conntrack_icmpv6_timeout" no longer used */
 701         /* NET_NF_CONNTRACK_FRAG6_TIMEOUT "nf_conntrack_frag6_timeout" no longer used */
 702         { CTL_INT,      NET_NF_CONNTRACK_FRAG6_LOW_THRESH,      "nf_conntrack_frag6_low_thresh" },
 703         { CTL_INT,      NET_NF_CONNTRACK_FRAG6_HIGH_THRESH,     "nf_conntrack_frag6_high_thresh" },
 704         { CTL_INT,      NET_NF_CONNTRACK_CHECKSUM,              "nf_conntrack_checksum" },
 705
 706         {}
 707 };
 708
 709 static const struct bin_table bin_net_irda_table[] = {
 710         { CTL_INT,      NET_IRDA_DISCOVERY,             "discovery" },
 711         { CTL_STR,      NET_IRDA_DEVNAME,               "devname" },
 712         { CTL_INT,      NET_IRDA_DEBUG,                 "debug" },
 713         { CTL_INT,      NET_IRDA_FAST_POLL,             "fast_poll_increase" },
 714         { CTL_INT,      NET_IRDA_DISCOVERY_SLOTS,       "discovery_slots" },
 715         { CTL_INT,      NET_IRDA_DISCOVERY_TIMEOUT,     "discovery_timeout" },
 716         { CTL_INT,      NET_IRDA_SLOT_TIMEOUT,          "slot_timeout" },
 717         { CTL_INT,      NET_IRDA_MAX_BAUD_RATE,         "max_baud_rate" },
 718         { CTL_INT,      NET_IRDA_MIN_TX_TURN_TIME,      "min_tx_turn_time" },
 719         { CTL_INT,      NET_IRDA_MAX_TX_DATA_SIZE,      "max_tx_data_size" },
 720         { CTL_INT,      NET_IRDA_MAX_TX_WINDOW,         "max_tx_window" },
 721         { CTL_INT,      NET_IRDA_MAX_NOREPLY_TIME,      "max_noreply_time" },
 722         { CTL_INT,      NET_IRDA_WARN_NOREPLY_TIME,     "warn_noreply_time" },
 723         { CTL_INT,      NET_IRDA_LAP_KEEPALIVE_TIME,    "lap_keepalive_time" },
 724         {}
 725 };
 726
 727 static const struct bin_table bin_net_table[] = {
 728         { CTL_DIR,      NET_CORE,               "core",         bin_net_core_table },
 729         /* NET_ETHER not used */
 730         /* NET_802 not used */
 731         { CTL_DIR,      NET_UNIX,               "unix",         bin_net_unix_table },
 732         { CTL_DIR,      NET_IPV4,               "ipv4",         bin_net_ipv4_table },
 733         { CTL_DIR,      NET_IPX,                "ipx",          bin_net_ipx_table },
 734         { CTL_DIR,      NET_ATALK,              "appletalk",    bin_net_atalk_table },
 735         { CTL_DIR,      NET_NETROM,             "netrom",       bin_net_netrom_table },
 736         { CTL_DIR,      NET_AX25,               "ax25",         bin_net_ax25_table },
 737         /*  NET_BRIDGE "bridge" no longer used */
 738         { CTL_DIR,      NET_ROSE,               "rose",         bin_net_rose_table },
 739         { CTL_DIR,      NET_IPV6,               "ipv6",         bin_net_ipv6_table },
 740         { CTL_DIR,      NET_X25,                "x25",          bin_net_x25_table },
 741         { CTL_DIR,      NET_TR,                 "token-ring",   bin_net_tr_table },
 742         { CTL_DIR,      NET_DECNET,             "decnet",       bin_net_decnet_table },
 743         /*  NET_ECONET not used */
 744         { CTL_DIR,      NET_SCTP,               "sctp",         bin_net_sctp_table },
 745         { CTL_DIR,      NET_LLC,                "llc",          bin_net_llc_table },
 746         { CTL_DIR,      NET_NETFILTER,          "netfilter",    bin_net_netfilter_table },
 747         /* NET_DCCP "dccp" no longer used */
 748         { CTL_DIR,      NET_IRDA,               "irda",         bin_net_irda_table },
 749         { CTL_INT,      2089,                   "nf_conntrack_max" },
 750         {}
 751 };
 752
 753 static const struct bin_table bin_fs_quota_table[] = {
 754         { CTL_INT,      FS_DQ_LOOKUPS,          "lookups" },
 755         { CTL_INT,      FS_DQ_DROPS,            "drops" },
 756         { CTL_INT,      FS_DQ_READS,            "reads" },
 757         { CTL_INT,      FS_DQ_WRITES,           "writes" },
 758         { CTL_INT,      FS_DQ_CACHE_HITS,       "cache_hits" },
 759         { CTL_INT,      FS_DQ_ALLOCATED,        "allocated_dquots" },
 760         { CTL_INT,      FS_DQ_FREE,             "free_dquots" },
 761         { CTL_INT,      FS_DQ_SYNCS,            "syncs" },
 762         { CTL_INT,      FS_DQ_WARNINGS,         "warnings" },
 763         {}
 764 };
 765
 766 static const struct bin_table bin_fs_xfs_table[] = {
 767         { CTL_INT,      XFS_SGID_INHERIT,       "irix_sgid_inherit" },
 768         { CTL_INT,      XFS_SYMLINK_MODE,       "irix_symlink_mode" },
 769         { CTL_INT,      XFS_PANIC_MASK,         "panic_mask" },
 770
 771         { CTL_INT,      XFS_ERRLEVEL,           "error_level" },
 772         { CTL_INT,      XFS_SYNCD_TIMER,        "xfssyncd_centisecs" },
 773         { CTL_INT,      XFS_INHERIT_SYNC,       "inherit_sync" },
 774         { CTL_INT,      XFS_INHERIT_NODUMP,     "inherit_nodump" },
 775         { CTL_INT,      XFS_INHERIT_NOATIME,    "inherit_noatime" },
 776         { CTL_INT,      XFS_BUF_TIMER,          "xfsbufd_centisecs" },
 777         { CTL_INT,      XFS_BUF_AGE,            "age_buffer_centisecs" },
 778         { CTL_INT,      XFS_INHERIT_NOSYM,      "inherit_nosymlinks" },
 779         { CTL_INT,      XFS_ROTORSTEP,  "rotorstep" },
 780         { CTL_INT,      XFS_INHERIT_NODFRG,     "inherit_nodefrag" },
 781         { CTL_INT,      XFS_FILESTREAM_TIMER,   "filestream_centisecs" },
 782         { CTL_INT,      XFS_STATS_CLEAR,        "stats_clear" },
 783         {}
 784 };
 785
 786 static const struct bin_table bin_fs_ocfs2_nm_table[] = {
 787         { CTL_STR,      1, "hb_ctl_path" },
 788         {}
 789 };
 790
 791 static const struct bin_table bin_fs_ocfs2_table[] = {
 792         { CTL_DIR,      1,      "nm",   bin_fs_ocfs2_nm_table },
 793         {}
 794 };
 795
 796 static const struct bin_table bin_inotify_table[] = {
 797         { CTL_INT,      INOTIFY_MAX_USER_INSTANCES,     "max_user_instances" },
 798         { CTL_INT,      INOTIFY_MAX_USER_WATCHES,       "max_user_watches" },
 799         { CTL_INT,      INOTIFY_MAX_QUEUED_EVENTS,      "max_queued_events" },
 800         {}
 801 };
 802
 803 static const struct bin_table bin_fs_table[] = {
 804         { CTL_INT,      FS_NRINODE,             "inode-nr" },
 805         { CTL_INT,      FS_STATINODE,           "inode-state" },
 806         /* FS_MAXINODE unused */
 807         /* FS_NRDQUOT unused */
 808         /* FS_MAXDQUOT unused */
 809         /* FS_NRFILE "file-nr" no longer used */
 810         { CTL_INT,      FS_MAXFILE,             "file-max" },
 811         { CTL_INT,      FS_DENTRY,              "dentry-state" },
 812         /* FS_NRSUPER unused */
 813         /* FS_MAXUPSER unused */
 814         { CTL_INT,      FS_OVERFLOWUID,         "overflowuid" },
 815         { CTL_INT,      FS_OVERFLOWGID,         "overflowgid" },
 816         { CTL_INT,      FS_LEASES,              "leases-enable" },
 817         { CTL_INT,      FS_DIR_NOTIFY,          "dir-notify-enable" },
 818         { CTL_INT,      FS_LEASE_TIME,          "lease-break-time" },
 819         { CTL_DIR,      FS_DQSTATS,             "quota",        bin_fs_quota_table },
 820         { CTL_DIR,      FS_XFS,                 "xfs",          bin_fs_xfs_table },
 821         { CTL_ULONG,    FS_AIO_NR,              "aio-nr" },
 822         { CTL_ULONG,    FS_AIO_MAX_NR,          "aio-max-nr" },
 823         { CTL_DIR,      FS_INOTIFY,             "inotify",      bin_inotify_table },
 824         { CTL_DIR,      FS_OCFS2,               "ocfs2",        bin_fs_ocfs2_table },
 825         { CTL_INT,      KERN_SETUID_DUMPABLE,   "suid_dumpable" },
 826         {}
 827 };
 828
 829 static const struct bin_table bin_ipmi_table[] = {
 830         { CTL_INT,      DEV_IPMI_POWEROFF_POWERCYCLE,   "poweroff_powercycle" },
 831         {}
 832 };
 833
 834 static const struct bin_table bin_mac_hid_files[] = {
 835         /* DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES unused */
 836         /* DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES unused */
 837         { CTL_INT,      DEV_MAC_HID_MOUSE_BUTTON_EMULATION,     "mouse_button_emulation" },
 838         { CTL_INT,      DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE,      "mouse_button2_keycode" },
 839         { CTL_INT,      DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE,      "mouse_button3_keycode" },
 840         /* DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES unused */
 841         {}
 842 };
 843
 844 static const struct bin_table bin_raid_table[] = {
 845         { CTL_INT,      DEV_RAID_SPEED_LIMIT_MIN,       "speed_limit_min" },
 846         { CTL_INT,      DEV_RAID_SPEED_LIMIT_MAX,       "speed_limit_max" },
 847         {}
 848 };
 849
 850 static const struct bin_table bin_scsi_table[] = {
 851         { CTL_INT, DEV_SCSI_LOGGING_LEVEL, "logging_level" },
 852         {}
 853 };
 854
 855 static const struct bin_table bin_dev_table[] = {
 856         /* DEV_CDROM    "cdrom" no longer used */
 857         /* DEV_HWMON unused */
 858         /* DEV_PARPORT  "parport" no longer used */
 859         { CTL_DIR,      DEV_RAID,       "raid",         bin_raid_table },
 860         { CTL_DIR,      DEV_MAC_HID,    "mac_hid",      bin_mac_hid_files },
 861         { CTL_DIR,      DEV_SCSI,       "scsi",         bin_scsi_table },
 862         { CTL_DIR,      DEV_IPMI,       "ipmi",         bin_ipmi_table },
 863         {}
 864 };
 865
 866 static const struct bin_table bin_bus_isa_table[] = {
 867         { CTL_INT,      BUS_ISA_MEM_BASE,       "membase" },
 868         { CTL_INT,      BUS_ISA_PORT_BASE,      "portbase" },
 869         { CTL_INT,      BUS_ISA_PORT_SHIFT,     "portshift" },
 870         {}
 871 };
 872
 873 static const struct bin_table bin_bus_table[] = {
 874         { CTL_DIR,      CTL_BUS_ISA,    "isa",  bin_bus_isa_table },
 875         {}
 876 };
 877
 878
 879 static const struct bin_table bin_s390dbf_table[] = {
 880         { CTL_INT,      5678 /* CTL_S390DBF_STOPPABLE */, "debug_stoppable" },
 881         { CTL_INT,      5679 /* CTL_S390DBF_ACTIVE */,    "debug_active" },
 882         {}
 883 };
 884
 885 static const struct bin_table bin_sunrpc_table[] = {
 886         /* CTL_RPCDEBUG "rpc_debug"  no longer used */
 887         /* CTL_NFSDEBUG "nfs_debug"  no longer used */
 888         /* CTL_NFSDDEBUG "nfsd_debug" no longer used  */
 889         /* CTL_NLMDEBUG "nlm_debug" no longer used */
 890
 891         { CTL_INT,      CTL_SLOTTABLE_UDP,      "udp_slot_table_entries" },
 892         { CTL_INT,      CTL_SLOTTABLE_TCP,      "tcp_slot_table_entries" },
 893         { CTL_INT,      CTL_MIN_RESVPORT,       "min_resvport" },
 894         { CTL_INT,      CTL_MAX_RESVPORT,       "max_resvport" },
 895         {}
 896 };
 897
 898 static const struct bin_table bin_pm_table[] = {
 899         /* frv specific */
 900         /* 1 == CTL_PM_SUSPEND  "suspend"  no longer used" */
 901         { CTL_INT,      2 /* CTL_PM_CMODE */,           "cmode" },
 902         { CTL_INT,      3 /* CTL_PM_P0 */,              "p0" },
 903         { CTL_INT,      4 /* CTL_PM_CM */,              "cm" },
 904         {}
 905 };
 906
 907 static const struct bin_table bin_root_table[] = {
 908         { CTL_DIR,      CTL_KERN,       "kernel",       bin_kern_table },
 909         { CTL_DIR,      CTL_VM,         "vm",           bin_vm_table },
 910         { CTL_DIR,      CTL_NET,        "net",          bin_net_table },
 911         /* CTL_PROC not used */
 912         { CTL_DIR,      CTL_FS,         "fs",           bin_fs_table },
 913         /* CTL_DEBUG "debug" no longer used */
 914         { CTL_DIR,      CTL_DEV,        "dev",          bin_dev_table },
 915         { CTL_DIR,      CTL_BUS,        "bus",          bin_bus_table },
 916         { CTL_DIR,      CTL_ABI,        "abi" },
 917         /* CTL_CPU not used */
 918         /* CTL_ARLAN "arlan" no longer used */
 919         { CTL_DIR,      CTL_S390DBF,    "s390dbf",      bin_s390dbf_table },
 920         { CTL_DIR,      CTL_SUNRPC,     "sunrpc",       bin_sunrpc_table },
 921         { CTL_DIR,      CTL_PM,         "pm",           bin_pm_table },
 922         {}
 923 };
 924
 925 static ssize_t bin_dir(struct file *file,
 926         void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
 927 {
 928         return -ENOTDIR;
 929 }
 930
 931
 932 static ssize_t bin_string(struct file *file,
 933         void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
 934 {
 935         ssize_t result, copied = 0;
 936
 937         if (oldval && oldlen) {
 938                 char __user *lastp;
 939                 loff_t pos = 0;
 940                 int ch;
 941
 942                 result = vfs_read(file, oldval, oldlen, &pos);
 943                 if (result < 0)
 944                         goto out;
 945
 946                 copied = result;
 947                 lastp = oldval + copied - 1;
 948
 949                 result = -EFAULT;
 950                 if (get_user(ch, lastp))
 951                         goto out;
 952
 953                 /* Trim off the trailing newline */
 954                 if (ch == '\n') {
 955                         result = -EFAULT;
 956                         if (put_user('\0', lastp))
 957                                 goto out;
 958                         copied -= 1;
 959                 }
 960         }
 961
 962         if (newval && newlen) {
 963                 loff_t pos = 0;
 964
 965                 result = vfs_write(file, newval, newlen, &pos);
 966                 if (result < 0)
 967                         goto out;
 968         }
 969
 970         result = copied;
 971 out:
 972         return result;
 973 }
 974
 975 static ssize_t bin_intvec(struct file *file,
 976         void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
 977 {
 978         ssize_t copied = 0;
 979         char *buffer;
 980         ssize_t result;
 981
 982         result = -ENOMEM;
 983         buffer = kmalloc(BUFSZ, GFP_KERNEL);
 984         if (!buffer)
 985                 goto out;
 986
 987         if (oldval && oldlen) {
 988                 unsigned __user *vec = oldval;
 989                 size_t length = oldlen / sizeof(*vec);
 990                 char *str, *end;
 991                 int i;
 992
 993                 result = kernel_read(file, 0, buffer, BUFSZ - 1);
 994                 if (result < 0)
 995                         goto out_kfree;
 996
 997                 str = buffer;
 998                 end = str + result;
 999                 *end++ = '\0';
1000                 for (i = 0; i < length; i++) {
1001                         unsigned long value;
1002
1003                         value = simple_strtoul(str, &str, 10);
1004                         while (isspace(*str))
1005                                 str++;
1006
1007                         result = -EFAULT;
1008                         if (put_user(value, vec + i))
1009                                 goto out_kfree;
1010
1011                         copied += sizeof(*vec);
1012                         if (!isdigit(*str))
1013                                 break;
1014                 }
1015         }
1016
1017         if (newval && newlen) {
1018                 unsigned __user *vec = newval;
1019                 size_t length = newlen / sizeof(*vec);
1020                 char *str, *end;
1021                 int i;
1022
1023                 str = buffer;
1024                 end = str + BUFSZ;
1025                 for (i = 0; i < length; i++) {
1026                         unsigned long value;
1027
1028                         result = -EFAULT;
1029                         if (get_user(value, vec + i))
1030                                 goto out_kfree;
1031
1032                         str += scnprintf(str, end - str, "%lu\t", value);
1033                 }
1034
1035                 result = kernel_write(file, buffer, str - buffer, 0);
1036                 if (result < 0)
1037                         goto out_kfree;
1038         }
1039         result = copied;
1040 out_kfree:
1041         kfree(buffer);
1042 out:
1043         return result;
1044 }
1045
1046 static ssize_t bin_ulongvec(struct file *file,
1047         void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1048 {
1049         ssize_t copied = 0;
1050         char *buffer;
1051         ssize_t result;
1052
1053         result = -ENOMEM;
1054         buffer = kmalloc(BUFSZ, GFP_KERNEL);
1055         if (!buffer)
1056                 goto out;
1057
1058         if (oldval && oldlen) {
1059                 unsigned long __user *vec = oldval;
1060                 size_t length = oldlen / sizeof(*vec);
1061                 char *str, *end;
1062                 int i;
1063
1064                 result = kernel_read(file, 0, buffer, BUFSZ - 1);
1065                 if (result < 0)
1066                         goto out_kfree;
1067
1068                 str = buffer;
1069                 end = str + result;
1070                 *end++ = '\0';
1071                 for (i = 0; i < length; i++) {
1072                         unsigned long value;
1073
1074                         value = simple_strtoul(str, &str, 10);
1075                         while (isspace(*str))
1076                                 str++;
1077
1078                         result = -EFAULT;
1079                         if (put_user(value, vec + i))
1080                                 goto out_kfree;
1081
1082                         copied += sizeof(*vec);
1083                         if (!isdigit(*str))
1084                                 break;
1085                 }
1086         }
1087
1088         if (newval && newlen) {
1089                 unsigned long __user *vec = newval;
1090                 size_t length = newlen / sizeof(*vec);
1091                 char *str, *end;
1092                 int i;
1093
1094                 str = buffer;
1095                 end = str + BUFSZ;
1096                 for (i = 0; i < length; i++) {
1097                         unsigned long value;
1098
1099                         result = -EFAULT;
1100                         if (get_user(value, vec + i))
1101                                 goto out_kfree;
1102
1103                         str += scnprintf(str, end - str, "%lu\t", value);
1104                 }
1105
1106                 result = kernel_write(file, buffer, str - buffer, 0);
1107                 if (result < 0)
1108                         goto out_kfree;
1109         }
1110         result = copied;
1111 out_kfree:
1112         kfree(buffer);
1113 out:
1114         return result;
1115 }
1116
1117 static ssize_t bin_uuid(struct file *file,
1118         void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1119 {
1120         ssize_t result, copied = 0;
1121
1122         /* Only supports reads */
1123         if (oldval && oldlen) {
1124                 char buf[40], *str = buf;
1125                 unsigned char uuid[16];
1126                 int i;
1127
1128                 result = kernel_read(file, 0, buf, sizeof(buf) - 1);
1129                 if (result < 0)
1130                         goto out;
1131
1132                 buf[result] = '\0';
1133
1134                 /* Convert the uuid to from a string to binary */
1135                 for (i = 0; i < 16; i++) {
1136                         result = -EIO;
1137                         if (!isxdigit(str[0]) || !isxdigit(str[1]))
1138                                 goto out;
1139
1140                         uuid[i] = (hex_to_bin(str[0]) << 4) |
1141                                         hex_to_bin(str[1]);
1142                         str += 2;
1143                         if (*str == '-')
1144                                 str++;
1145                 }
1146
1147                 if (oldlen > 16)
1148                         oldlen = 16;
1149
1150                 result = -EFAULT;
1151                 if (copy_to_user(oldval, uuid, oldlen))
1152                         goto out;
1153
1154                 copied = oldlen;
1155         }
1156         result = copied;
1157 out:
1158         return result;
1159 }
1160
1161 static ssize_t bin_dn_node_address(struct file *file,
1162         void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1163 {
1164         ssize_t result, copied = 0;
1165
1166         if (oldval && oldlen) {
1167                 char buf[15], *nodep;
1168                 unsigned long area, node;
1169                 __le16 dnaddr;
1170
1171                 result = kernel_read(file, 0, buf, sizeof(buf) - 1);
1172                 if (result < 0)
1173                         goto out;
1174
1175                 buf[result] = '\0';
1176
1177                 /* Convert the decnet address to binary */
1178                 result = -EIO;
1179                 nodep = strchr(buf, '.');
1180                 if (!nodep)
1181                         goto out;
1182                 ++nodep;
1183
1184                 area = simple_strtoul(buf, NULL, 10);
1185                 node = simple_strtoul(nodep, NULL, 10);
1186
1187                 result = -EIO;
1188                 if ((area > 63)||(node > 1023))
1189                         goto out;
1190
1191                 dnaddr = cpu_to_le16((area << 10) | node);
1192
1193                 result = -EFAULT;
1194                 if (put_user(dnaddr, (__le16 __user *)oldval))
1195                         goto out;
1196
1197                 copied = sizeof(dnaddr);
1198         }
1199
1200         if (newval && newlen) {
1201                 __le16 dnaddr;
1202                 char buf[15];
1203                 int len;
1204
1205                 result = -EINVAL;
1206                 if (newlen != sizeof(dnaddr))
1207                         goto out;
1208
1209                 result = -EFAULT;
1210                 if (get_user(dnaddr, (__le16 __user *)newval))
1211                         goto out;
1212
1213                 len = scnprintf(buf, sizeof(buf), "%hu.%hu",
1214                                 le16_to_cpu(dnaddr) >> 10,
1215                                 le16_to_cpu(dnaddr) & 0x3ff);
1216
1217                 result = kernel_write(file, buf, len, 0);
1218                 if (result < 0)
1219                         goto out;
1220         }
1221
1222         result = copied;
1223 out:
1224         return result;
1225 }
1226
1227 static const struct bin_table *get_sysctl(const int *name, int nlen, char *path)
1228 {
1229         const struct bin_table *table = &bin_root_table[0];
1230         int ctl_name;
1231
1232         /* The binary sysctl tables have a small maximum depth so
1233          * there is no danger of overflowing our path as it PATH_MAX
1234          * bytes long.
1235          */
1236         memcpy(path, "sys/", 4);
1237         path += 4;
1238
1239 repeat:
1240         if (!nlen)
1241                 return ERR_PTR(-ENOTDIR);
1242         ctl_name = *name;
1243         name++;
1244         nlen--;
1245         for ( ; table->convert; table++) {
1246                 int len = 0;
1247
1248                 /*
1249                  * For a wild card entry map from ifindex to network
1250                  * device name.
1251                  */
1252                 if (!table->ctl_name) {
1253 #ifdef CONFIG_NET
1254                         struct net *net = current->nsproxy->net_ns;
1255                         struct net_device *dev;
1256                         dev = dev_get_by_index(net, ctl_name);
1257                         if (dev) {
1258                                 len = strlen(dev->name);
1259                                 memcpy(path, dev->name, len);
1260                                 dev_put(dev);
1261                         }
1262 #endif
1263                 /* Use the well known sysctl number to proc name mapping */
1264                 } else if (ctl_name == table->ctl_name) {
1265                         len = strlen(table->procname);
1266                         memcpy(path, table->procname, len);
1267                 }
1268                 if (len) {
1269                         path += len;
1270                         if (table->child) {
1271                                 *path++ = '/';
1272                                 table = table->child;
1273                                 goto repeat;
1274                         }
1275                         *path = '\0';
1276                         return table;
1277                 }
1278         }
1279         return ERR_PTR(-ENOTDIR);
1280 }
1281
1282 static char *sysctl_getname(const int *name, int nlen, const struct bin_table **tablep)
1283 {
1284         char *tmp, *result;
1285
1286         result = ERR_PTR(-ENOMEM);
1287         tmp = __getname();
1288         if (tmp) {
1289                 const struct bin_table *table = get_sysctl(name, nlen, tmp);
1290                 result = tmp;
1291                 *tablep = table;
1292                 if (IS_ERR(table)) {
1293                         __putname(tmp);
1294                         result = ERR_CAST(table);
1295                 }
1296         }
1297         return result;
1298 }
1299
1300 static ssize_t binary_sysctl(const int *name, int nlen,
1301         void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1302 {
1303         const struct bin_table *table = NULL;
1304         struct vfsmount *mnt;
1305         struct file *file;
1306         ssize_t result;
1307         char *pathname;
1308         int flags;
1309
1310         pathname = sysctl_getname(name, nlen, &table);
1311         result = PTR_ERR(pathname);
1312         if (IS_ERR(pathname))
1313                 goto out;
1314
1315         /* How should the sysctl be accessed? */
1316         if (oldval && oldlen && newval && newlen) {
1317                 flags = O_RDWR;
1318         } else if (newval && newlen) {
1319                 flags = O_WRONLY;
1320         } else if (oldval && oldlen) {
1321                 flags = O_RDONLY;
1322         } else {
1323                 result = 0;
1324                 goto out_putname;
1325         }
1326
1327         mnt = task_active_pid_ns(current)->proc_mnt;
1328         file = file_open_root(mnt->mnt_root, mnt, pathname, flags, 0);
1329         result = PTR_ERR(file);
1330         if (IS_ERR(file))
1331                 goto out_putname;
1332
1333         result = table->convert(file, oldval, oldlen, newval, newlen);
1334
1335         fput(file);
1336 out_putname:
1337         __putname(pathname);
1338 out:
1339         return result;
1340 }
1341
1342
1343 #else /* CONFIG_SYSCTL_SYSCALL */
1344
1345 static ssize_t binary_sysctl(const int *name, int nlen,
1346         void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1347 {
1348         return -ENOSYS;
1349 }
1350
1351 #endif /* CONFIG_SYSCTL_SYSCALL */
1352
1353
1354 static void deprecated_sysctl_warning(const int *name, int nlen)
1355 {
1356         int i;
1357
1358         /*
1359          * CTL_KERN/KERN_VERSION is used by older glibc and cannot
1360          * ever go away.
1361          */
1362         if (name[0] == CTL_KERN && name[1] == KERN_VERSION)
1363                 return;
1364
1365         if (printk_ratelimit()) {
1366                 printk(KERN_INFO
1367                         "warning: process `%s' used the deprecated sysctl "
1368                         "system call with ", current->comm);
1369                 for (i = 0; i < nlen; i++)
1370                         printk("%d.", name[i]);
1371                 printk("\n");
1372         }
1373         return;
1374 }
1375
1376 #define WARN_ONCE_HASH_BITS 8
1377 #define WARN_ONCE_HASH_SIZE (1<<WARN_ONCE_HASH_BITS)
1378
1379 static DECLARE_BITMAP(warn_once_bitmap, WARN_ONCE_HASH_SIZE);
1380
1381 #define FNV32_OFFSET 2166136261U
1382 #define FNV32_PRIME 0x01000193
1383
1384 /*
1385  * Print each legacy sysctl (approximately) only once.
1386  * To avoid making the tables non-const use a external
1387  * hash-table instead.
1388  * Worst case hash collision: 6, but very rarely.
1389  * NOTE! We don't use the SMP-safe bit tests. We simply
1390  * don't care enough.
1391  */
1392 static void warn_on_bintable(const int *name, int nlen)
1393 {
1394         int i;
1395         u32 hash = FNV32_OFFSET;
1396
1397         for (i = 0; i < nlen; i++)
1398                 hash = (hash ^ name[i]) * FNV32_PRIME;
1399         hash %= WARN_ONCE_HASH_SIZE;
1400         if (__test_and_set_bit(hash, warn_once_bitmap))
1401                 return;
1402         deprecated_sysctl_warning(name, nlen);
1403 }
1404
1405 static ssize_t do_sysctl(int __user *args_name, int nlen,
1406         void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1407 {
1408         int name[CTL_MAXNAME];
1409         int i;
1410
1411         /* Check args->nlen. */
1412         if (nlen < 0 || nlen > CTL_MAXNAME)
1413                 return -ENOTDIR;
1414         /* Read in the sysctl name for simplicity */
1415         for (i = 0; i < nlen; i++)
1416                 if (get_user(name[i], args_name + i))
1417                         return -EFAULT;
1418
1419         warn_on_bintable(name, nlen);
1420
1421         return binary_sysctl(name, nlen, oldval, oldlen, newval, newlen);
1422 }
1423
1424 SYSCALL_DEFINE1(sysctl, struct __sysctl_args __user *, args)
1425 {
1426         struct __sysctl_args tmp;
1427         size_t oldlen = 0;
1428         ssize_t result;
1429
1430         if (copy_from_user(&tmp, args, sizeof(tmp)))
1431                 return -EFAULT;
1432
1433         if (tmp.oldval && !tmp.oldlenp)
1434                 return -EFAULT;
1435
1436         if (tmp.oldlenp && get_user(oldlen, tmp.oldlenp))
1437                 return -EFAULT;
1438
1439         result = do_sysctl(tmp.name, tmp.nlen, tmp.oldval, oldlen,
1440                            tmp.newval, tmp.newlen);
1441
1442         if (result >= 0) {
1443                 oldlen = result;
1444                 result = 0;
1445         }
1446
1447         if (tmp.oldlenp && put_user(oldlen, tmp.oldlenp))
1448                 return -EFAULT;
1449
1450         return result;
1451 }
1452
1453
1454 #ifdef CONFIG_COMPAT
1455
1456 struct compat_sysctl_args {
1457         compat_uptr_t   name;
1458         int             nlen;
1459         compat_uptr_t   oldval;
1460         compat_uptr_t   oldlenp;
1461         compat_uptr_t   newval;
1462         compat_size_t   newlen;
1463         compat_ulong_t  __unused[4];
1464 };
1465
1466 COMPAT_SYSCALL_DEFINE1(sysctl, struct compat_sysctl_args __user *, args)
1467 {
1468         struct compat_sysctl_args tmp;
1469         compat_size_t __user *compat_oldlenp;
1470         size_t oldlen = 0;
1471         ssize_t result;
1472
1473         if (copy_from_user(&tmp, args, sizeof(tmp)))
1474                 return -EFAULT;
1475
1476         if (tmp.oldval && !tmp.oldlenp)
1477                 return -EFAULT;
1478
1479         compat_oldlenp = compat_ptr(tmp.oldlenp);
1480         if (compat_oldlenp && get_user(oldlen, compat_oldlenp))
1481                 return -EFAULT;
1482
1483         result = do_sysctl(compat_ptr(tmp.name), tmp.nlen,
1484                            compat_ptr(tmp.oldval), oldlen,
1485                            compat_ptr(tmp.newval), tmp.newlen);
1486
1487         if (result >= 0) {
1488                 oldlen = result;
1489                 result = 0;
1490         }
1491
1492         if (compat_oldlenp && put_user(oldlen, compat_oldlenp))
1493                 return -EFAULT;
1494
1495         return result;
1496 }
1497
1498 #endif /* CONFIG_COMPAT */