sysctl_binary.c 51 KB
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// SPDX-License-Identifier: GPL-2.0
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#include <linux/stat.h>
#include <linux/sysctl.h>
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#include "../fs/xfs/xfs_sysctl.h"
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#include <linux/sunrpc/debug.h>
#include <linux/string.h>
#include <linux/syscalls.h>
#include <linux/namei.h>
#include <linux/mount.h>
#include <linux/fs.h>
#include <linux/nsproxy.h>
#include <linux/pid_namespace.h>
#include <linux/file.h>
#include <linux/ctype.h>
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#include <linux/netdevice.h>
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#include <linux/kernel.h>
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#include <linux/uuid.h>
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#include <linux/slab.h>
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#include <linux/compat.h>
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#ifdef CONFIG_SYSCTL_SYSCALL

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struct bin_table;
typedef ssize_t bin_convert_t(struct file *file,
	void __user *oldval, size_t oldlen, void __user *newval, size_t newlen);

static bin_convert_t bin_dir;
static bin_convert_t bin_string;
static bin_convert_t bin_intvec;
static bin_convert_t bin_ulongvec;
static bin_convert_t bin_uuid;
static bin_convert_t bin_dn_node_address;

#define CTL_DIR   bin_dir
#define CTL_STR   bin_string
#define CTL_INT   bin_intvec
#define CTL_ULONG bin_ulongvec
#define CTL_UUID  bin_uuid
#define CTL_DNADR bin_dn_node_address

#define BUFSZ 256

struct bin_table {
	bin_convert_t		*convert;
	int			ctl_name;
	const char		*procname;
	const struct bin_table	*child;
};

static const struct bin_table bin_random_table[] = {
	{ CTL_INT,	RANDOM_POOLSIZE,	"poolsize" },
	{ CTL_INT,	RANDOM_ENTROPY_COUNT,	"entropy_avail" },
	{ CTL_INT,	RANDOM_READ_THRESH,	"read_wakeup_threshold" },
	{ CTL_INT,	RANDOM_WRITE_THRESH,	"write_wakeup_threshold" },
	{ CTL_UUID,	RANDOM_BOOT_ID,		"boot_id" },
	{ CTL_UUID,	RANDOM_UUID,		"uuid" },
	{}
};

static const struct bin_table bin_pty_table[] = {
	{ CTL_INT,	PTY_MAX,	"max" },
	{ CTL_INT,	PTY_NR,		"nr" },
	{}
};

static const struct bin_table bin_kern_table[] = {
	{ CTL_STR,	KERN_OSTYPE,			"ostype" },
	{ CTL_STR,	KERN_OSRELEASE,			"osrelease" },
	/* KERN_OSREV not used */
	{ CTL_STR,	KERN_VERSION,			"version" },
	/* KERN_SECUREMASK not used */
	/* KERN_PROF not used */
	{ CTL_STR,	KERN_NODENAME,			"hostname" },
	{ CTL_STR,	KERN_DOMAINNAME,		"domainname" },

	{ CTL_INT,	KERN_PANIC,			"panic" },
	{ CTL_INT,	KERN_REALROOTDEV,		"real-root-dev" },

	{ CTL_STR,	KERN_SPARC_REBOOT,		"reboot-cmd" },
	{ CTL_INT,	KERN_CTLALTDEL,			"ctrl-alt-del" },
	{ CTL_INT,	KERN_PRINTK,			"printk" },

	/* KERN_NAMETRANS not used */
	/* KERN_PPC_HTABRECLAIM not used */
	/* KERN_PPC_ZEROPAGED not used */
	{ CTL_INT,	KERN_PPC_POWERSAVE_NAP,		"powersave-nap" },

	{ CTL_STR,	KERN_MODPROBE,			"modprobe" },
	{ CTL_INT,	KERN_SG_BIG_BUFF,		"sg-big-buff" },
	{ CTL_INT,	KERN_ACCT,			"acct" },
	/* KERN_PPC_L2CR "l2cr" no longer used */

	/* KERN_RTSIGNR not used */
	/* KERN_RTSIGMAX not used */

	{ CTL_ULONG,	KERN_SHMMAX,			"shmmax" },
	{ CTL_INT,	KERN_MSGMAX,			"msgmax" },
	{ CTL_INT,	KERN_MSGMNB,			"msgmnb" },
	/* KERN_MSGPOOL not used*/
	{ CTL_INT,	KERN_SYSRQ,			"sysrq" },
	{ CTL_INT,	KERN_MAX_THREADS,		"threads-max" },
	{ CTL_DIR,	KERN_RANDOM,			"random",	bin_random_table },
	{ CTL_ULONG,	KERN_SHMALL,			"shmall" },
	{ CTL_INT,	KERN_MSGMNI,			"msgmni" },
	{ CTL_INT,	KERN_SEM,			"sem" },
	{ CTL_INT,	KERN_SPARC_STOP_A,		"stop-a" },
	{ CTL_INT,	KERN_SHMMNI,			"shmmni" },

	{ CTL_INT,	KERN_OVERFLOWUID,		"overflowuid" },
	{ CTL_INT,	KERN_OVERFLOWGID,		"overflowgid" },

	{ CTL_STR,	KERN_HOTPLUG,			"hotplug", },
	{ CTL_INT,	KERN_IEEE_EMULATION_WARNINGS,	"ieee_emulation_warnings" },

	{ CTL_INT,	KERN_S390_USER_DEBUG_LOGGING,	"userprocess_debug" },
	{ CTL_INT,	KERN_CORE_USES_PID,		"core_uses_pid" },
	/* KERN_TAINTED "tainted" no longer used */
	{ CTL_INT,	KERN_CADPID,			"cad_pid" },
	{ CTL_INT,	KERN_PIDMAX,			"pid_max" },
	{ CTL_STR,	KERN_CORE_PATTERN,		"core_pattern" },
	{ CTL_INT,	KERN_PANIC_ON_OOPS,		"panic_on_oops" },
	{ CTL_INT,	KERN_HPPA_PWRSW,		"soft-power" },
	{ CTL_INT,	KERN_HPPA_UNALIGNED,		"unaligned-trap" },

	{ CTL_INT,	KERN_PRINTK_RATELIMIT,		"printk_ratelimit" },
	{ CTL_INT,	KERN_PRINTK_RATELIMIT_BURST,	"printk_ratelimit_burst" },

	{ CTL_DIR,	KERN_PTY,			"pty",		bin_pty_table },
	{ CTL_INT,	KERN_NGROUPS_MAX,		"ngroups_max" },
	{ CTL_INT,	KERN_SPARC_SCONS_PWROFF,	"scons-poweroff" },
	/* KERN_HZ_TIMER "hz_timer" no longer used */
	{ CTL_INT,	KERN_UNKNOWN_NMI_PANIC,		"unknown_nmi_panic" },
	{ CTL_INT,	KERN_BOOTLOADER_TYPE,		"bootloader_type" },
	{ CTL_INT,	KERN_RANDOMIZE,			"randomize_va_space" },

	{ CTL_INT,	KERN_SPIN_RETRY,		"spin_retry" },
	/* KERN_ACPI_VIDEO_FLAGS "acpi_video_flags" no longer used */
	{ CTL_INT,	KERN_IA64_UNALIGNED,		"ignore-unaligned-usertrap" },
	{ CTL_INT,	KERN_COMPAT_LOG,		"compat-log" },
	{ CTL_INT,	KERN_MAX_LOCK_DEPTH,		"max_lock_depth" },
	{ CTL_INT,	KERN_PANIC_ON_NMI,		"panic_on_unrecovered_nmi" },
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	{ CTL_INT,	KERN_PANIC_ON_WARN,		"panic_on_warn" },
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	{}
};

static const struct bin_table bin_vm_table[] = {
	{ CTL_INT,	VM_OVERCOMMIT_MEMORY,		"overcommit_memory" },
	{ CTL_INT,	VM_PAGE_CLUSTER,		"page-cluster" },
	{ CTL_INT,	VM_DIRTY_BACKGROUND,		"dirty_background_ratio" },
	{ CTL_INT,	VM_DIRTY_RATIO,			"dirty_ratio" },
	/* VM_DIRTY_WB_CS "dirty_writeback_centisecs" no longer used */
	/* VM_DIRTY_EXPIRE_CS "dirty_expire_centisecs" no longer used */
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	/* VM_NR_PDFLUSH_THREADS "nr_pdflush_threads" no longer used */
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	{ CTL_INT,	VM_OVERCOMMIT_RATIO,		"overcommit_ratio" },
	/* VM_PAGEBUF unused */
	/* VM_HUGETLB_PAGES "nr_hugepages" no longer used */
	{ CTL_INT,	VM_SWAPPINESS,			"swappiness" },
	{ CTL_INT,	VM_LOWMEM_RESERVE_RATIO,	"lowmem_reserve_ratio" },
	{ CTL_INT,	VM_MIN_FREE_KBYTES,		"min_free_kbytes" },
	{ CTL_INT,	VM_MAX_MAP_COUNT,		"max_map_count" },
	{ CTL_INT,	VM_LAPTOP_MODE,			"laptop_mode" },
	{ CTL_INT,	VM_BLOCK_DUMP,			"block_dump" },
	{ CTL_INT,	VM_HUGETLB_GROUP,		"hugetlb_shm_group" },
	{ CTL_INT,	VM_VFS_CACHE_PRESSURE,	"vfs_cache_pressure" },
	{ CTL_INT,	VM_LEGACY_VA_LAYOUT,		"legacy_va_layout" },
	/* VM_SWAP_TOKEN_TIMEOUT unused */
	{ CTL_INT,	VM_DROP_PAGECACHE,		"drop_caches" },
	{ CTL_INT,	VM_PERCPU_PAGELIST_FRACTION,	"percpu_pagelist_fraction" },
	{ CTL_INT,	VM_ZONE_RECLAIM_MODE,		"zone_reclaim_mode" },
	{ CTL_INT,	VM_MIN_UNMAPPED,		"min_unmapped_ratio" },
	{ CTL_INT,	VM_PANIC_ON_OOM,		"panic_on_oom" },
	{ CTL_INT,	VM_VDSO_ENABLED,		"vdso_enabled" },
	{ CTL_INT,	VM_MIN_SLAB,			"min_slab_ratio" },

	{}
};

static const struct bin_table bin_net_core_table[] = {
	{ CTL_INT,	NET_CORE_WMEM_MAX,	"wmem_max" },
	{ CTL_INT,	NET_CORE_RMEM_MAX,	"rmem_max" },
	{ CTL_INT,	NET_CORE_WMEM_DEFAULT,	"wmem_default" },
	{ CTL_INT,	NET_CORE_RMEM_DEFAULT,	"rmem_default" },
	/* NET_CORE_DESTROY_DELAY unused */
	{ CTL_INT,	NET_CORE_MAX_BACKLOG,	"netdev_max_backlog" },
	/* NET_CORE_FASTROUTE unused */
	{ CTL_INT,	NET_CORE_MSG_COST,	"message_cost" },
	{ CTL_INT,	NET_CORE_MSG_BURST,	"message_burst" },
	{ CTL_INT,	NET_CORE_OPTMEM_MAX,	"optmem_max" },
	/* NET_CORE_HOT_LIST_LENGTH unused */
	/* NET_CORE_DIVERT_VERSION unused */
	/* NET_CORE_NO_CONG_THRESH unused */
	/* NET_CORE_NO_CONG unused */
	/* NET_CORE_LO_CONG unused */
	/* NET_CORE_MOD_CONG unused */
	{ CTL_INT,	NET_CORE_DEV_WEIGHT,	"dev_weight" },
	{ CTL_INT,	NET_CORE_SOMAXCONN,	"somaxconn" },
	{ CTL_INT,	NET_CORE_BUDGET,	"netdev_budget" },
	{ CTL_INT,	NET_CORE_AEVENT_ETIME,	"xfrm_aevent_etime" },
	{ CTL_INT,	NET_CORE_AEVENT_RSEQTH,	"xfrm_aevent_rseqth" },
	{ CTL_INT,	NET_CORE_WARNINGS,	"warnings" },
	{},
};

static const struct bin_table bin_net_unix_table[] = {
	/* NET_UNIX_DESTROY_DELAY unused */
	/* NET_UNIX_DELETE_DELAY unused */
	{ CTL_INT,	NET_UNIX_MAX_DGRAM_QLEN,	"max_dgram_qlen" },
	{}
};

static const struct bin_table bin_net_ipv4_route_table[] = {
	{ CTL_INT,	NET_IPV4_ROUTE_FLUSH,			"flush" },
	/* NET_IPV4_ROUTE_MIN_DELAY "min_delay" no longer used */
	/* NET_IPV4_ROUTE_MAX_DELAY "max_delay" no longer used */
	{ CTL_INT,	NET_IPV4_ROUTE_GC_THRESH,		"gc_thresh" },
	{ CTL_INT,	NET_IPV4_ROUTE_MAX_SIZE,		"max_size" },
	{ CTL_INT,	NET_IPV4_ROUTE_GC_MIN_INTERVAL,		"gc_min_interval" },
	{ CTL_INT,	NET_IPV4_ROUTE_GC_MIN_INTERVAL_MS,	"gc_min_interval_ms" },
	{ CTL_INT,	NET_IPV4_ROUTE_GC_TIMEOUT,		"gc_timeout" },
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	/* NET_IPV4_ROUTE_GC_INTERVAL "gc_interval" no longer used */
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	{ CTL_INT,	NET_IPV4_ROUTE_REDIRECT_LOAD,		"redirect_load" },
	{ CTL_INT,	NET_IPV4_ROUTE_REDIRECT_NUMBER,		"redirect_number" },
	{ CTL_INT,	NET_IPV4_ROUTE_REDIRECT_SILENCE,	"redirect_silence" },
	{ CTL_INT,	NET_IPV4_ROUTE_ERROR_COST,		"error_cost" },
	{ CTL_INT,	NET_IPV4_ROUTE_ERROR_BURST,		"error_burst" },
	{ CTL_INT,	NET_IPV4_ROUTE_GC_ELASTICITY,		"gc_elasticity" },
	{ CTL_INT,	NET_IPV4_ROUTE_MTU_EXPIRES,		"mtu_expires" },
	{ CTL_INT,	NET_IPV4_ROUTE_MIN_PMTU,		"min_pmtu" },
	{ CTL_INT,	NET_IPV4_ROUTE_MIN_ADVMSS,		"min_adv_mss" },
	{}
};

static const struct bin_table bin_net_ipv4_conf_vars_table[] = {
	{ CTL_INT,	NET_IPV4_CONF_FORWARDING,		"forwarding" },
	{ CTL_INT,	NET_IPV4_CONF_MC_FORWARDING,		"mc_forwarding" },

	{ CTL_INT,	NET_IPV4_CONF_ACCEPT_REDIRECTS,		"accept_redirects" },
	{ CTL_INT,	NET_IPV4_CONF_SECURE_REDIRECTS,		"secure_redirects" },
	{ CTL_INT,	NET_IPV4_CONF_SEND_REDIRECTS,		"send_redirects" },
	{ CTL_INT,	NET_IPV4_CONF_SHARED_MEDIA,		"shared_media" },
	{ CTL_INT,	NET_IPV4_CONF_RP_FILTER,		"rp_filter" },
	{ CTL_INT,	NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE,	"accept_source_route" },
	{ CTL_INT,	NET_IPV4_CONF_PROXY_ARP,		"proxy_arp" },
	{ CTL_INT,	NET_IPV4_CONF_MEDIUM_ID,		"medium_id" },
	{ CTL_INT,	NET_IPV4_CONF_BOOTP_RELAY,		"bootp_relay" },
	{ CTL_INT,	NET_IPV4_CONF_LOG_MARTIANS,		"log_martians" },
	{ CTL_INT,	NET_IPV4_CONF_TAG,			"tag" },
	{ CTL_INT,	NET_IPV4_CONF_ARPFILTER,		"arp_filter" },
	{ CTL_INT,	NET_IPV4_CONF_ARP_ANNOUNCE,		"arp_announce" },
	{ CTL_INT,	NET_IPV4_CONF_ARP_IGNORE,		"arp_ignore" },
	{ CTL_INT,	NET_IPV4_CONF_ARP_ACCEPT,		"arp_accept" },
	{ CTL_INT,	NET_IPV4_CONF_ARP_NOTIFY,		"arp_notify" },

	{ CTL_INT,	NET_IPV4_CONF_NOXFRM,			"disable_xfrm" },
	{ CTL_INT,	NET_IPV4_CONF_NOPOLICY,			"disable_policy" },
	{ CTL_INT,	NET_IPV4_CONF_FORCE_IGMP_VERSION,	"force_igmp_version" },
	{ CTL_INT,	NET_IPV4_CONF_PROMOTE_SECONDARIES,	"promote_secondaries" },
	{}
};

static const struct bin_table bin_net_ipv4_conf_table[] = {
	{ CTL_DIR,	NET_PROTO_CONF_ALL,	"all",		bin_net_ipv4_conf_vars_table },
	{ CTL_DIR,	NET_PROTO_CONF_DEFAULT,	"default",	bin_net_ipv4_conf_vars_table },
	{ CTL_DIR,	0, NULL, bin_net_ipv4_conf_vars_table },
	{}
};

static const struct bin_table bin_net_neigh_vars_table[] = {
	{ CTL_INT,	NET_NEIGH_MCAST_SOLICIT,	"mcast_solicit" },
	{ CTL_INT,	NET_NEIGH_UCAST_SOLICIT,	"ucast_solicit" },
	{ CTL_INT,	NET_NEIGH_APP_SOLICIT,		"app_solicit" },
	/* NET_NEIGH_RETRANS_TIME "retrans_time" no longer used */
	{ CTL_INT,	NET_NEIGH_REACHABLE_TIME,	"base_reachable_time" },
	{ CTL_INT,	NET_NEIGH_DELAY_PROBE_TIME,	"delay_first_probe_time" },
	{ CTL_INT,	NET_NEIGH_GC_STALE_TIME,	"gc_stale_time" },
	{ CTL_INT,	NET_NEIGH_UNRES_QLEN,		"unres_qlen" },
	{ CTL_INT,	NET_NEIGH_PROXY_QLEN,		"proxy_qlen" },
	/* NET_NEIGH_ANYCAST_DELAY "anycast_delay" no longer used */
	/* NET_NEIGH_PROXY_DELAY "proxy_delay" no longer used */
	/* NET_NEIGH_LOCKTIME "locktime" no longer used */
	{ CTL_INT,	NET_NEIGH_GC_INTERVAL,		"gc_interval" },
	{ CTL_INT,	NET_NEIGH_GC_THRESH1,		"gc_thresh1" },
	{ CTL_INT,	NET_NEIGH_GC_THRESH2,		"gc_thresh2" },
	{ CTL_INT,	NET_NEIGH_GC_THRESH3,		"gc_thresh3" },
	{ CTL_INT,	NET_NEIGH_RETRANS_TIME_MS,	"retrans_time_ms" },
	{ CTL_INT,	NET_NEIGH_REACHABLE_TIME_MS,	"base_reachable_time_ms" },
	{}
};

static const struct bin_table bin_net_neigh_table[] = {
	{ CTL_DIR,	NET_PROTO_CONF_DEFAULT, "default", bin_net_neigh_vars_table },
	{ CTL_DIR,	0, NULL, bin_net_neigh_vars_table },
	{}
};

static const struct bin_table bin_net_ipv4_netfilter_table[] = {
	{ CTL_INT,	NET_IPV4_NF_CONNTRACK_MAX,		"ip_conntrack_max" },

	/* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT "ip_conntrack_tcp_timeout_syn_sent" no longer used */
	/* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV "ip_conntrack_tcp_timeout_syn_recv" no longer used */
	/* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED "ip_conntrack_tcp_timeout_established" no longer used */
	/* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT "ip_conntrack_tcp_timeout_fin_wait" no longer used */
	/* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT	"ip_conntrack_tcp_timeout_close_wait" no longer used */
	/* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK "ip_conntrack_tcp_timeout_last_ack" no longer used */
	/* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT "ip_conntrack_tcp_timeout_time_wait" no longer used */
	/* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE "ip_conntrack_tcp_timeout_close" no longer used */

	/* NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT "ip_conntrack_udp_timeout" no longer used */
	/* NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM "ip_conntrack_udp_timeout_stream" no longer used */
	/* NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT "ip_conntrack_icmp_timeout" no longer used */
	/* NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT "ip_conntrack_generic_timeout" no longer used */

	{ CTL_INT,	NET_IPV4_NF_CONNTRACK_BUCKETS,		"ip_conntrack_buckets" },
	{ CTL_INT,	NET_IPV4_NF_CONNTRACK_LOG_INVALID,	"ip_conntrack_log_invalid" },
	/* NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS "ip_conntrack_tcp_timeout_max_retrans" no longer used */
	{ CTL_INT,	NET_IPV4_NF_CONNTRACK_TCP_LOOSE,	"ip_conntrack_tcp_loose" },
	{ CTL_INT,	NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL,	"ip_conntrack_tcp_be_liberal" },
	{ CTL_INT,	NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS,	"ip_conntrack_tcp_max_retrans" },

	/* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED "ip_conntrack_sctp_timeout_closed" no longer used */
	/* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT "ip_conntrack_sctp_timeout_cookie_wait" no longer used */
	/* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED "ip_conntrack_sctp_timeout_cookie_echoed" no longer used */
	/* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED "ip_conntrack_sctp_timeout_established" no longer used */
	/* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT "ip_conntrack_sctp_timeout_shutdown_sent" no longer used */
	/* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD "ip_conntrack_sctp_timeout_shutdown_recd" no longer used */
	/* NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT "ip_conntrack_sctp_timeout_shutdown_ack_sent" no longer used */

	{ CTL_INT,	NET_IPV4_NF_CONNTRACK_COUNT,		"ip_conntrack_count" },
	{ CTL_INT,	NET_IPV4_NF_CONNTRACK_CHECKSUM,		"ip_conntrack_checksum" },
	{}
};

static const struct bin_table bin_net_ipv4_table[] = {
	{CTL_INT,	NET_IPV4_FORWARD,			"ip_forward" },

	{ CTL_DIR,	NET_IPV4_CONF,		"conf",		bin_net_ipv4_conf_table },
	{ CTL_DIR,	NET_IPV4_NEIGH,		"neigh",	bin_net_neigh_table },
	{ CTL_DIR,	NET_IPV4_ROUTE,		"route",	bin_net_ipv4_route_table },
	/* NET_IPV4_FIB_HASH unused */
	{ CTL_DIR,	NET_IPV4_NETFILTER,	"netfilter",	bin_net_ipv4_netfilter_table },

	{ CTL_INT,	NET_IPV4_TCP_TIMESTAMPS,		"tcp_timestamps" },
	{ CTL_INT,	NET_IPV4_TCP_WINDOW_SCALING,		"tcp_window_scaling" },
	{ CTL_INT,	NET_IPV4_TCP_SACK,			"tcp_sack" },
	{ CTL_INT,	NET_IPV4_TCP_RETRANS_COLLAPSE,		"tcp_retrans_collapse" },
	{ CTL_INT,	NET_IPV4_DEFAULT_TTL,			"ip_default_ttl" },
	/* NET_IPV4_AUTOCONFIG unused */
	{ CTL_INT,	NET_IPV4_NO_PMTU_DISC,			"ip_no_pmtu_disc" },
	{ CTL_INT,	NET_IPV4_NONLOCAL_BIND,			"ip_nonlocal_bind" },
	{ CTL_INT,	NET_IPV4_TCP_SYN_RETRIES,		"tcp_syn_retries" },
	{ CTL_INT,	NET_TCP_SYNACK_RETRIES,			"tcp_synack_retries" },
	{ CTL_INT,	NET_TCP_MAX_ORPHANS,			"tcp_max_orphans" },
	{ CTL_INT,	NET_TCP_MAX_TW_BUCKETS,			"tcp_max_tw_buckets" },
	{ CTL_INT,	NET_IPV4_DYNADDR,			"ip_dynaddr" },
	{ CTL_INT,	NET_IPV4_TCP_KEEPALIVE_TIME,		"tcp_keepalive_time" },
	{ CTL_INT,	NET_IPV4_TCP_KEEPALIVE_PROBES,		"tcp_keepalive_probes" },
	{ CTL_INT,	NET_IPV4_TCP_KEEPALIVE_INTVL,		"tcp_keepalive_intvl" },
	{ CTL_INT,	NET_IPV4_TCP_RETRIES1,			"tcp_retries1" },
	{ CTL_INT,	NET_IPV4_TCP_RETRIES2,			"tcp_retries2" },
	{ CTL_INT,	NET_IPV4_TCP_FIN_TIMEOUT,		"tcp_fin_timeout" },
	{ CTL_INT,	NET_TCP_SYNCOOKIES,			"tcp_syncookies" },
	{ CTL_INT,	NET_TCP_TW_RECYCLE,			"tcp_tw_recycle" },
	{ CTL_INT,	NET_TCP_ABORT_ON_OVERFLOW,		"tcp_abort_on_overflow" },
	{ CTL_INT,	NET_TCP_STDURG,				"tcp_stdurg" },
	{ CTL_INT,	NET_TCP_RFC1337,			"tcp_rfc1337" },
	{ CTL_INT,	NET_TCP_MAX_SYN_BACKLOG,		"tcp_max_syn_backlog" },
	{ CTL_INT,	NET_IPV4_LOCAL_PORT_RANGE,		"ip_local_port_range" },
	{ CTL_INT,	NET_IPV4_IGMP_MAX_MEMBERSHIPS,		"igmp_max_memberships" },
	{ CTL_INT,	NET_IPV4_IGMP_MAX_MSF,			"igmp_max_msf" },
	{ CTL_INT,	NET_IPV4_INET_PEER_THRESHOLD,		"inet_peer_threshold" },
	{ CTL_INT,	NET_IPV4_INET_PEER_MINTTL,		"inet_peer_minttl" },
	{ CTL_INT,	NET_IPV4_INET_PEER_MAXTTL,		"inet_peer_maxttl" },
	{ CTL_INT,	NET_IPV4_INET_PEER_GC_MINTIME,		"inet_peer_gc_mintime" },
	{ CTL_INT,	NET_IPV4_INET_PEER_GC_MAXTIME,		"inet_peer_gc_maxtime" },
	{ CTL_INT,	NET_TCP_ORPHAN_RETRIES,			"tcp_orphan_retries" },
	{ CTL_INT,	NET_TCP_FACK,				"tcp_fack" },
	{ CTL_INT,	NET_TCP_REORDERING,			"tcp_reordering" },
	{ CTL_INT,	NET_TCP_ECN,				"tcp_ecn" },
	{ CTL_INT,	NET_TCP_DSACK,				"tcp_dsack" },
	{ CTL_INT,	NET_TCP_MEM,				"tcp_mem" },
	{ CTL_INT,	NET_TCP_WMEM,				"tcp_wmem" },
	{ CTL_INT,	NET_TCP_RMEM,				"tcp_rmem" },
	{ CTL_INT,	NET_TCP_APP_WIN,			"tcp_app_win" },
	{ CTL_INT,	NET_TCP_ADV_WIN_SCALE,			"tcp_adv_win_scale" },
	{ CTL_INT,	NET_TCP_TW_REUSE,			"tcp_tw_reuse" },
	{ CTL_INT,	NET_TCP_FRTO,				"tcp_frto" },
	{ CTL_INT,	NET_TCP_FRTO_RESPONSE,			"tcp_frto_response" },
	{ CTL_INT,	NET_TCP_LOW_LATENCY,			"tcp_low_latency" },
	{ CTL_INT,	NET_TCP_NO_METRICS_SAVE,		"tcp_no_metrics_save" },
	{ CTL_INT,	NET_TCP_MODERATE_RCVBUF,		"tcp_moderate_rcvbuf" },
	{ CTL_INT,	NET_TCP_TSO_WIN_DIVISOR,		"tcp_tso_win_divisor" },
	{ CTL_STR,	NET_TCP_CONG_CONTROL,			"tcp_congestion_control" },
	{ CTL_INT,	NET_TCP_MTU_PROBING,			"tcp_mtu_probing" },
	{ CTL_INT,	NET_TCP_BASE_MSS,			"tcp_base_mss" },
	{ CTL_INT,	NET_IPV4_TCP_WORKAROUND_SIGNED_WINDOWS,	"tcp_workaround_signed_windows" },
	{ CTL_INT,	NET_TCP_SLOW_START_AFTER_IDLE,		"tcp_slow_start_after_idle" },
	{ CTL_INT,	NET_CIPSOV4_CACHE_ENABLE,		"cipso_cache_enable" },
	{ CTL_INT,	NET_CIPSOV4_CACHE_BUCKET_SIZE,		"cipso_cache_bucket_size" },
	{ CTL_INT,	NET_CIPSOV4_RBM_OPTFMT,			"cipso_rbm_optfmt" },
	{ CTL_INT,	NET_CIPSOV4_RBM_STRICTVALID,		"cipso_rbm_strictvalid" },
	/* NET_TCP_AVAIL_CONG_CONTROL "tcp_available_congestion_control" no longer used */
	{ CTL_STR,	NET_TCP_ALLOWED_CONG_CONTROL,		"tcp_allowed_congestion_control" },
	{ CTL_INT,	NET_TCP_MAX_SSTHRESH,			"tcp_max_ssthresh" },

	{ CTL_INT,	NET_IPV4_ICMP_ECHO_IGNORE_ALL,		"icmp_echo_ignore_all" },
	{ CTL_INT,	NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS,	"icmp_echo_ignore_broadcasts" },
	{ CTL_INT,	NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES,	"icmp_ignore_bogus_error_responses" },
	{ CTL_INT,	NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR,	"icmp_errors_use_inbound_ifaddr" },
	{ CTL_INT,	NET_IPV4_ICMP_RATELIMIT,		"icmp_ratelimit" },
	{ CTL_INT,	NET_IPV4_ICMP_RATEMASK,			"icmp_ratemask" },

	{ CTL_INT,	NET_IPV4_IPFRAG_HIGH_THRESH,		"ipfrag_high_thresh" },
	{ CTL_INT,	NET_IPV4_IPFRAG_LOW_THRESH,		"ipfrag_low_thresh" },
	{ CTL_INT,	NET_IPV4_IPFRAG_TIME,			"ipfrag_time" },

	{ CTL_INT,	NET_IPV4_IPFRAG_SECRET_INTERVAL,	"ipfrag_secret_interval" },
	/* NET_IPV4_IPFRAG_MAX_DIST "ipfrag_max_dist" no longer used */

	{ CTL_INT,	2088 /* NET_IPQ_QMAX */,		"ip_queue_maxlen" },

	/* NET_TCP_DEFAULT_WIN_SCALE unused */
	/* NET_TCP_BIC_BETA unused */
	/* NET_IPV4_TCP_MAX_KA_PROBES unused */
	/* NET_IPV4_IP_MASQ_DEBUG unused */
	/* NET_TCP_SYN_TAILDROP unused */
	/* NET_IPV4_ICMP_SOURCEQUENCH_RATE unused */
	/* NET_IPV4_ICMP_DESTUNREACH_RATE unused */
	/* NET_IPV4_ICMP_TIMEEXCEED_RATE unused */
	/* NET_IPV4_ICMP_PARAMPROB_RATE unused */
	/* NET_IPV4_ICMP_ECHOREPLY_RATE unused */
	/* NET_IPV4_ALWAYS_DEFRAG unused */
	{}
};

static const struct bin_table bin_net_ipx_table[] = {
	{ CTL_INT,	NET_IPX_PPROP_BROADCASTING,	"ipx_pprop_broadcasting" },
	/* NET_IPX_FORWARDING unused */
	{}
};

static const struct bin_table bin_net_atalk_table[] = {
	{ CTL_INT,	NET_ATALK_AARP_EXPIRY_TIME,		"aarp-expiry-time" },
	{ CTL_INT,	NET_ATALK_AARP_TICK_TIME,		"aarp-tick-time" },
	{ CTL_INT,	NET_ATALK_AARP_RETRANSMIT_LIMIT,	"aarp-retransmit-limit" },
	{ CTL_INT,	NET_ATALK_AARP_RESOLVE_TIME,		"aarp-resolve-time" },
	{},
};

static const struct bin_table bin_net_netrom_table[] = {
	{ CTL_INT,	NET_NETROM_DEFAULT_PATH_QUALITY,		"default_path_quality" },
	{ CTL_INT,	NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER,	"obsolescence_count_initialiser" },
	{ CTL_INT,	NET_NETROM_NETWORK_TTL_INITIALISER,		"network_ttl_initialiser" },
	{ CTL_INT,	NET_NETROM_TRANSPORT_TIMEOUT,			"transport_timeout" },
	{ CTL_INT,	NET_NETROM_TRANSPORT_MAXIMUM_TRIES,		"transport_maximum_tries" },
	{ CTL_INT,	NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY,		"transport_acknowledge_delay" },
	{ CTL_INT,	NET_NETROM_TRANSPORT_BUSY_DELAY,		"transport_busy_delay" },
	{ CTL_INT,	NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE,	"transport_requested_window_size" },
	{ CTL_INT,	NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT,	"transport_no_activity_timeout" },
	{ CTL_INT,	NET_NETROM_ROUTING_CONTROL,			"routing_control" },
	{ CTL_INT,	NET_NETROM_LINK_FAILS_COUNT,			"link_fails_count" },
	{ CTL_INT,	NET_NETROM_RESET,				"reset" },
	{}
};

static const struct bin_table bin_net_ax25_param_table[] = {
	{ CTL_INT,	NET_AX25_IP_DEFAULT_MODE,	"ip_default_mode" },
	{ CTL_INT,	NET_AX25_DEFAULT_MODE,		"ax25_default_mode" },
	{ CTL_INT,	NET_AX25_BACKOFF_TYPE,		"backoff_type" },
	{ CTL_INT,	NET_AX25_CONNECT_MODE,		"connect_mode" },
	{ CTL_INT,	NET_AX25_STANDARD_WINDOW,	"standard_window_size" },
	{ CTL_INT,	NET_AX25_EXTENDED_WINDOW,	"extended_window_size" },
	{ CTL_INT,	NET_AX25_T1_TIMEOUT,		"t1_timeout" },
	{ CTL_INT,	NET_AX25_T2_TIMEOUT,		"t2_timeout" },
	{ CTL_INT,	NET_AX25_T3_TIMEOUT,		"t3_timeout" },
	{ CTL_INT,	NET_AX25_IDLE_TIMEOUT,		"idle_timeout" },
	{ CTL_INT,	NET_AX25_N2,			"maximum_retry_count" },
	{ CTL_INT,	NET_AX25_PACLEN,		"maximum_packet_length" },
	{ CTL_INT,	NET_AX25_PROTOCOL,		"protocol" },
	{ CTL_INT,	NET_AX25_DAMA_SLAVE_TIMEOUT,	"dama_slave_timeout" },
	{}
};

static const struct bin_table bin_net_ax25_table[] = {
	{ CTL_DIR,	0, NULL, bin_net_ax25_param_table },
	{}
};

static const struct bin_table bin_net_rose_table[] = {
	{ CTL_INT,	NET_ROSE_RESTART_REQUEST_TIMEOUT,	"restart_request_timeout" },
	{ CTL_INT,	NET_ROSE_CALL_REQUEST_TIMEOUT,		"call_request_timeout" },
	{ CTL_INT,	NET_ROSE_RESET_REQUEST_TIMEOUT,		"reset_request_timeout" },
	{ CTL_INT,	NET_ROSE_CLEAR_REQUEST_TIMEOUT,		"clear_request_timeout" },
	{ CTL_INT,	NET_ROSE_ACK_HOLD_BACK_TIMEOUT,		"acknowledge_hold_back_timeout" },
	{ CTL_INT,	NET_ROSE_ROUTING_CONTROL,		"routing_control" },
	{ CTL_INT,	NET_ROSE_LINK_FAIL_TIMEOUT,		"link_fail_timeout" },
	{ CTL_INT,	NET_ROSE_MAX_VCS,			"maximum_virtual_circuits" },
	{ CTL_INT,	NET_ROSE_WINDOW_SIZE,			"window_size" },
	{ CTL_INT,	NET_ROSE_NO_ACTIVITY_TIMEOUT,		"no_activity_timeout" },
	{}
};

static const struct bin_table bin_net_ipv6_conf_var_table[] = {
	{ CTL_INT,	NET_IPV6_FORWARDING,			"forwarding" },
	{ CTL_INT,	NET_IPV6_HOP_LIMIT,			"hop_limit" },
	{ CTL_INT,	NET_IPV6_MTU,				"mtu" },
	{ CTL_INT,	NET_IPV6_ACCEPT_RA,			"accept_ra" },
	{ CTL_INT,	NET_IPV6_ACCEPT_REDIRECTS,		"accept_redirects" },
	{ CTL_INT,	NET_IPV6_AUTOCONF,			"autoconf" },
	{ CTL_INT,	NET_IPV6_DAD_TRANSMITS,			"dad_transmits" },
	{ CTL_INT,	NET_IPV6_RTR_SOLICITS,			"router_solicitations" },
	{ CTL_INT,	NET_IPV6_RTR_SOLICIT_INTERVAL,		"router_solicitation_interval" },
	{ CTL_INT,	NET_IPV6_RTR_SOLICIT_DELAY,		"router_solicitation_delay" },
	{ CTL_INT,	NET_IPV6_USE_TEMPADDR,			"use_tempaddr" },
	{ CTL_INT,	NET_IPV6_TEMP_VALID_LFT,		"temp_valid_lft" },
	{ CTL_INT,	NET_IPV6_TEMP_PREFERED_LFT,		"temp_prefered_lft" },
	{ CTL_INT,	NET_IPV6_REGEN_MAX_RETRY,		"regen_max_retry" },
	{ CTL_INT,	NET_IPV6_MAX_DESYNC_FACTOR,		"max_desync_factor" },
	{ CTL_INT,	NET_IPV6_MAX_ADDRESSES,			"max_addresses" },
	{ CTL_INT,	NET_IPV6_FORCE_MLD_VERSION,		"force_mld_version" },
	{ CTL_INT,	NET_IPV6_ACCEPT_RA_DEFRTR,		"accept_ra_defrtr" },
	{ CTL_INT,	NET_IPV6_ACCEPT_RA_PINFO,		"accept_ra_pinfo" },
	{ CTL_INT,	NET_IPV6_ACCEPT_RA_RTR_PREF,		"accept_ra_rtr_pref" },
	{ CTL_INT,	NET_IPV6_RTR_PROBE_INTERVAL,		"router_probe_interval" },
	{ CTL_INT,	NET_IPV6_ACCEPT_RA_RT_INFO_MAX_PLEN,	"accept_ra_rt_info_max_plen" },
	{ CTL_INT,	NET_IPV6_PROXY_NDP,			"proxy_ndp" },
	{ CTL_INT,	NET_IPV6_ACCEPT_SOURCE_ROUTE,		"accept_source_route" },
527
	{ CTL_INT,	NET_IPV6_ACCEPT_RA_FROM_LOCAL,		"accept_ra_from_local" },
528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989
	{}
};

static const struct bin_table bin_net_ipv6_conf_table[] = {
	{ CTL_DIR,	NET_PROTO_CONF_ALL,		"all",	bin_net_ipv6_conf_var_table },
	{ CTL_DIR,	NET_PROTO_CONF_DEFAULT, 	"default", bin_net_ipv6_conf_var_table },
	{ CTL_DIR,	0, NULL, bin_net_ipv6_conf_var_table },
	{}
};

static const struct bin_table bin_net_ipv6_route_table[] = {
	/* NET_IPV6_ROUTE_FLUSH	"flush"  no longer used */
	{ CTL_INT,	NET_IPV6_ROUTE_GC_THRESH,		"gc_thresh" },
	{ CTL_INT,	NET_IPV6_ROUTE_MAX_SIZE,		"max_size" },
	{ CTL_INT,	NET_IPV6_ROUTE_GC_MIN_INTERVAL,		"gc_min_interval" },
	{ CTL_INT,	NET_IPV6_ROUTE_GC_TIMEOUT,		"gc_timeout" },
	{ CTL_INT,	NET_IPV6_ROUTE_GC_INTERVAL,		"gc_interval" },
	{ CTL_INT,	NET_IPV6_ROUTE_GC_ELASTICITY,		"gc_elasticity" },
	{ CTL_INT,	NET_IPV6_ROUTE_MTU_EXPIRES,		"mtu_expires" },
	{ CTL_INT,	NET_IPV6_ROUTE_MIN_ADVMSS,		"min_adv_mss" },
	{ CTL_INT,	NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS,	"gc_min_interval_ms" },
	{}
};

static const struct bin_table bin_net_ipv6_icmp_table[] = {
	{ CTL_INT,	NET_IPV6_ICMP_RATELIMIT,	"ratelimit" },
	{}
};

static const struct bin_table bin_net_ipv6_table[] = {
	{ CTL_DIR,	NET_IPV6_CONF,		"conf",		bin_net_ipv6_conf_table },
	{ CTL_DIR,	NET_IPV6_NEIGH,		"neigh",	bin_net_neigh_table },
	{ CTL_DIR,	NET_IPV6_ROUTE,		"route",	bin_net_ipv6_route_table },
	{ CTL_DIR,	NET_IPV6_ICMP,		"icmp",		bin_net_ipv6_icmp_table },
	{ CTL_INT,	NET_IPV6_BINDV6ONLY,		"bindv6only" },
	{ CTL_INT,	NET_IPV6_IP6FRAG_HIGH_THRESH,	"ip6frag_high_thresh" },
	{ CTL_INT,	NET_IPV6_IP6FRAG_LOW_THRESH,	"ip6frag_low_thresh" },
	{ CTL_INT,	NET_IPV6_IP6FRAG_TIME,		"ip6frag_time" },
	{ CTL_INT,	NET_IPV6_IP6FRAG_SECRET_INTERVAL,	"ip6frag_secret_interval" },
	{ CTL_INT,	NET_IPV6_MLD_MAX_MSF,		"mld_max_msf" },
	{ CTL_INT,	2088 /* IPQ_QMAX */,		"ip6_queue_maxlen" },
	{}
};

static const struct bin_table bin_net_x25_table[] = {
	{ CTL_INT,	NET_X25_RESTART_REQUEST_TIMEOUT,	"restart_request_timeout" },
	{ CTL_INT,	NET_X25_CALL_REQUEST_TIMEOUT,		"call_request_timeout" },
	{ CTL_INT,	NET_X25_RESET_REQUEST_TIMEOUT,	"reset_request_timeout" },
	{ CTL_INT,	NET_X25_CLEAR_REQUEST_TIMEOUT,	"clear_request_timeout" },
	{ CTL_INT,	NET_X25_ACK_HOLD_BACK_TIMEOUT,	"acknowledgement_hold_back_timeout" },
	{ CTL_INT,	NET_X25_FORWARD,			"x25_forward" },
	{}
};

static const struct bin_table bin_net_tr_table[] = {
	{ CTL_INT,	NET_TR_RIF_TIMEOUT,	"rif_timeout" },
	{}
};


static const struct bin_table bin_net_decnet_conf_vars[] = {
	{ CTL_INT,	NET_DECNET_CONF_DEV_FORWARDING,	"forwarding" },
	{ CTL_INT,	NET_DECNET_CONF_DEV_PRIORITY,	"priority" },
	{ CTL_INT,	NET_DECNET_CONF_DEV_T2,		"t2" },
	{ CTL_INT,	NET_DECNET_CONF_DEV_T3,		"t3" },
	{}
};

static const struct bin_table bin_net_decnet_conf[] = {
	{ CTL_DIR, NET_DECNET_CONF_ETHER,    "ethernet", bin_net_decnet_conf_vars },
	{ CTL_DIR, NET_DECNET_CONF_GRE,	     "ipgre",    bin_net_decnet_conf_vars },
	{ CTL_DIR, NET_DECNET_CONF_X25,	     "x25",      bin_net_decnet_conf_vars },
	{ CTL_DIR, NET_DECNET_CONF_PPP,	     "ppp",      bin_net_decnet_conf_vars },
	{ CTL_DIR, NET_DECNET_CONF_DDCMP,    "ddcmp",    bin_net_decnet_conf_vars },
	{ CTL_DIR, NET_DECNET_CONF_LOOPBACK, "loopback", bin_net_decnet_conf_vars },
	{ CTL_DIR, 0,			     NULL,	 bin_net_decnet_conf_vars },
	{}
};

static const struct bin_table bin_net_decnet_table[] = {
	{ CTL_DIR,	NET_DECNET_CONF,		"conf",	bin_net_decnet_conf },
	{ CTL_DNADR,	NET_DECNET_NODE_ADDRESS,	"node_address" },
	{ CTL_STR,	NET_DECNET_NODE_NAME,		"node_name" },
	{ CTL_STR,	NET_DECNET_DEFAULT_DEVICE,	"default_device" },
	{ CTL_INT,	NET_DECNET_TIME_WAIT,		"time_wait" },
	{ CTL_INT,	NET_DECNET_DN_COUNT,		"dn_count" },
	{ CTL_INT,	NET_DECNET_DI_COUNT,		"di_count" },
	{ CTL_INT,	NET_DECNET_DR_COUNT,		"dr_count" },
	{ CTL_INT,	NET_DECNET_DST_GC_INTERVAL,	"dst_gc_interval" },
	{ CTL_INT,	NET_DECNET_NO_FC_MAX_CWND,	"no_fc_max_cwnd" },
	{ CTL_INT,	NET_DECNET_MEM,		"decnet_mem" },
	{ CTL_INT,	NET_DECNET_RMEM,		"decnet_rmem" },
	{ CTL_INT,	NET_DECNET_WMEM,		"decnet_wmem" },
	{ CTL_INT,	NET_DECNET_DEBUG_LEVEL,	"debug" },
	{}
};

static const struct bin_table bin_net_sctp_table[] = {
	{ CTL_INT,	NET_SCTP_RTO_INITIAL,		"rto_initial" },
	{ CTL_INT,	NET_SCTP_RTO_MIN,		"rto_min" },
	{ CTL_INT,	NET_SCTP_RTO_MAX,		"rto_max" },
	{ CTL_INT,	NET_SCTP_RTO_ALPHA,		"rto_alpha_exp_divisor" },
	{ CTL_INT,	NET_SCTP_RTO_BETA,		"rto_beta_exp_divisor" },
	{ CTL_INT,	NET_SCTP_VALID_COOKIE_LIFE,	"valid_cookie_life" },
	{ CTL_INT,	NET_SCTP_ASSOCIATION_MAX_RETRANS,	"association_max_retrans" },
	{ CTL_INT,	NET_SCTP_PATH_MAX_RETRANS,	"path_max_retrans" },
	{ CTL_INT,	NET_SCTP_MAX_INIT_RETRANSMITS,	"max_init_retransmits" },
	{ CTL_INT,	NET_SCTP_HB_INTERVAL,		"hb_interval" },
	{ CTL_INT,	NET_SCTP_PRESERVE_ENABLE,	"cookie_preserve_enable" },
	{ CTL_INT,	NET_SCTP_MAX_BURST,		"max_burst" },
	{ CTL_INT,	NET_SCTP_ADDIP_ENABLE,		"addip_enable" },
	{ CTL_INT,	NET_SCTP_PRSCTP_ENABLE,		"prsctp_enable" },
	{ CTL_INT,	NET_SCTP_SNDBUF_POLICY,		"sndbuf_policy" },
	{ CTL_INT,	NET_SCTP_SACK_TIMEOUT,		"sack_timeout" },
	{ CTL_INT,	NET_SCTP_RCVBUF_POLICY,		"rcvbuf_policy" },
	{}
};

static const struct bin_table bin_net_llc_llc2_timeout_table[] = {
	{ CTL_INT,	NET_LLC2_ACK_TIMEOUT,	"ack" },
	{ CTL_INT,	NET_LLC2_P_TIMEOUT,	"p" },
	{ CTL_INT,	NET_LLC2_REJ_TIMEOUT,	"rej" },
	{ CTL_INT,	NET_LLC2_BUSY_TIMEOUT,	"busy" },
	{}
};

static const struct bin_table bin_net_llc_station_table[] = {
	{ CTL_INT,	NET_LLC_STATION_ACK_TIMEOUT,	"ack_timeout" },
	{}
};

static const struct bin_table bin_net_llc_llc2_table[] = {
	{ CTL_DIR,	NET_LLC2,		"timeout",	bin_net_llc_llc2_timeout_table },
	{}
};

static const struct bin_table bin_net_llc_table[] = {
	{ CTL_DIR,	NET_LLC2,		"llc2",		bin_net_llc_llc2_table },
	{ CTL_DIR,	NET_LLC_STATION,	"station",	bin_net_llc_station_table },
	{}
};

static const struct bin_table bin_net_netfilter_table[] = {
	{ CTL_INT,	NET_NF_CONNTRACK_MAX,			"nf_conntrack_max" },
	/* NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT "nf_conntrack_tcp_timeout_syn_sent" no longer used */
	/* NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV "nf_conntrack_tcp_timeout_syn_recv" no longer used */
	/* NET_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED "nf_conntrack_tcp_timeout_established" no longer used */
	/* NET_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT "nf_conntrack_tcp_timeout_fin_wait" no longer used */
	/* NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT "nf_conntrack_tcp_timeout_close_wait" no longer used */
	/* NET_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK "nf_conntrack_tcp_timeout_last_ack" no longer used */
	/* NET_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT "nf_conntrack_tcp_timeout_time_wait" no longer used */
	/* NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE "nf_conntrack_tcp_timeout_close" no longer used */
	/* NET_NF_CONNTRACK_UDP_TIMEOUT	"nf_conntrack_udp_timeout" no longer used */
	/* NET_NF_CONNTRACK_UDP_TIMEOUT_STREAM "nf_conntrack_udp_timeout_stream" no longer used */
	/* NET_NF_CONNTRACK_ICMP_TIMEOUT "nf_conntrack_icmp_timeout" no longer used */
	/* NET_NF_CONNTRACK_GENERIC_TIMEOUT "nf_conntrack_generic_timeout" no longer used */
	{ CTL_INT,	NET_NF_CONNTRACK_BUCKETS,		"nf_conntrack_buckets" },
	{ CTL_INT,	NET_NF_CONNTRACK_LOG_INVALID,		"nf_conntrack_log_invalid" },
	/* NET_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS "nf_conntrack_tcp_timeout_max_retrans" no longer used */
	{ CTL_INT,	NET_NF_CONNTRACK_TCP_LOOSE,		"nf_conntrack_tcp_loose" },
	{ CTL_INT,	NET_NF_CONNTRACK_TCP_BE_LIBERAL,	"nf_conntrack_tcp_be_liberal" },
	{ CTL_INT,	NET_NF_CONNTRACK_TCP_MAX_RETRANS,	"nf_conntrack_tcp_max_retrans" },
	/* NET_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED "nf_conntrack_sctp_timeout_closed" no longer used */
	/* NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT "nf_conntrack_sctp_timeout_cookie_wait" no longer used */
	/* NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED "nf_conntrack_sctp_timeout_cookie_echoed" no longer used */
	/* NET_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED "nf_conntrack_sctp_timeout_established" no longer used */
	/* NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT "nf_conntrack_sctp_timeout_shutdown_sent" no longer used */
	/* NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD "nf_conntrack_sctp_timeout_shutdown_recd" no longer used */
	/* NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT "nf_conntrack_sctp_timeout_shutdown_ack_sent" no longer used */
	{ CTL_INT,	NET_NF_CONNTRACK_COUNT,			"nf_conntrack_count" },
	/* NET_NF_CONNTRACK_ICMPV6_TIMEOUT "nf_conntrack_icmpv6_timeout" no longer used */
	/* NET_NF_CONNTRACK_FRAG6_TIMEOUT "nf_conntrack_frag6_timeout" no longer used */
	{ CTL_INT,	NET_NF_CONNTRACK_FRAG6_LOW_THRESH,	"nf_conntrack_frag6_low_thresh" },
	{ CTL_INT,	NET_NF_CONNTRACK_FRAG6_HIGH_THRESH,	"nf_conntrack_frag6_high_thresh" },
	{ CTL_INT,	NET_NF_CONNTRACK_CHECKSUM,		"nf_conntrack_checksum" },

	{}
};

static const struct bin_table bin_net_irda_table[] = {
	{ CTL_INT,	NET_IRDA_DISCOVERY,		"discovery" },
	{ CTL_STR,	NET_IRDA_DEVNAME,		"devname" },
	{ CTL_INT,	NET_IRDA_DEBUG,			"debug" },
	{ CTL_INT,	NET_IRDA_FAST_POLL,		"fast_poll_increase" },
	{ CTL_INT,	NET_IRDA_DISCOVERY_SLOTS,	"discovery_slots" },
	{ CTL_INT,	NET_IRDA_DISCOVERY_TIMEOUT,	"discovery_timeout" },
	{ CTL_INT,	NET_IRDA_SLOT_TIMEOUT,		"slot_timeout" },
	{ CTL_INT,	NET_IRDA_MAX_BAUD_RATE,		"max_baud_rate" },
	{ CTL_INT,	NET_IRDA_MIN_TX_TURN_TIME,	"min_tx_turn_time" },
	{ CTL_INT,	NET_IRDA_MAX_TX_DATA_SIZE,	"max_tx_data_size" },
	{ CTL_INT,	NET_IRDA_MAX_TX_WINDOW,		"max_tx_window" },
	{ CTL_INT,	NET_IRDA_MAX_NOREPLY_TIME,	"max_noreply_time" },
	{ CTL_INT,	NET_IRDA_WARN_NOREPLY_TIME,	"warn_noreply_time" },
	{ CTL_INT,	NET_IRDA_LAP_KEEPALIVE_TIME,	"lap_keepalive_time" },
	{}
};

static const struct bin_table bin_net_table[] = {
	{ CTL_DIR,	NET_CORE,		"core",		bin_net_core_table },
	/* NET_ETHER not used */
	/* NET_802 not used */
	{ CTL_DIR,	NET_UNIX,		"unix",		bin_net_unix_table },
	{ CTL_DIR,	NET_IPV4,		"ipv4",		bin_net_ipv4_table },
	{ CTL_DIR,	NET_IPX,		"ipx",		bin_net_ipx_table },
	{ CTL_DIR,	NET_ATALK,		"appletalk",	bin_net_atalk_table },
	{ CTL_DIR,	NET_NETROM,		"netrom",	bin_net_netrom_table },
	{ CTL_DIR,	NET_AX25,		"ax25",		bin_net_ax25_table },
	/*  NET_BRIDGE "bridge" no longer used */
	{ CTL_DIR,	NET_ROSE,		"rose",		bin_net_rose_table },
	{ CTL_DIR,	NET_IPV6,		"ipv6",		bin_net_ipv6_table },
	{ CTL_DIR,	NET_X25,		"x25",		bin_net_x25_table },
	{ CTL_DIR,	NET_TR,			"token-ring",	bin_net_tr_table },
	{ CTL_DIR,	NET_DECNET,		"decnet",	bin_net_decnet_table },
	/*  NET_ECONET not used */
	{ CTL_DIR,	NET_SCTP,		"sctp",		bin_net_sctp_table },
	{ CTL_DIR,	NET_LLC,		"llc",		bin_net_llc_table },
	{ CTL_DIR,	NET_NETFILTER,		"netfilter",	bin_net_netfilter_table },
	/* NET_DCCP "dccp" no longer used */
	{ CTL_DIR,	NET_IRDA,		"irda",		bin_net_irda_table },
	{ CTL_INT,	2089,			"nf_conntrack_max" },
	{}
};

static const struct bin_table bin_fs_quota_table[] = {
	{ CTL_INT,	FS_DQ_LOOKUPS,		"lookups" },
	{ CTL_INT,	FS_DQ_DROPS,		"drops" },
	{ CTL_INT,	FS_DQ_READS,		"reads" },
	{ CTL_INT,	FS_DQ_WRITES,		"writes" },
	{ CTL_INT,	FS_DQ_CACHE_HITS,	"cache_hits" },
	{ CTL_INT,	FS_DQ_ALLOCATED,	"allocated_dquots" },
	{ CTL_INT,	FS_DQ_FREE,		"free_dquots" },
	{ CTL_INT,	FS_DQ_SYNCS,		"syncs" },
	{ CTL_INT,	FS_DQ_WARNINGS,		"warnings" },
	{}
};

static const struct bin_table bin_fs_xfs_table[] = {
	{ CTL_INT,	XFS_SGID_INHERIT,	"irix_sgid_inherit" },
	{ CTL_INT,	XFS_SYMLINK_MODE,	"irix_symlink_mode" },
	{ CTL_INT,	XFS_PANIC_MASK,		"panic_mask" },

	{ CTL_INT,	XFS_ERRLEVEL,		"error_level" },
	{ CTL_INT,	XFS_SYNCD_TIMER,	"xfssyncd_centisecs" },
	{ CTL_INT,	XFS_INHERIT_SYNC,	"inherit_sync" },
	{ CTL_INT,	XFS_INHERIT_NODUMP,	"inherit_nodump" },
	{ CTL_INT,	XFS_INHERIT_NOATIME,	"inherit_noatime" },
	{ CTL_INT,	XFS_BUF_TIMER,		"xfsbufd_centisecs" },
	{ CTL_INT,	XFS_BUF_AGE,		"age_buffer_centisecs" },
	{ CTL_INT,	XFS_INHERIT_NOSYM,	"inherit_nosymlinks" },
	{ CTL_INT,	XFS_ROTORSTEP,	"rotorstep" },
	{ CTL_INT,	XFS_INHERIT_NODFRG,	"inherit_nodefrag" },
	{ CTL_INT,	XFS_FILESTREAM_TIMER,	"filestream_centisecs" },
	{ CTL_INT,	XFS_STATS_CLEAR,	"stats_clear" },
	{}
};

static const struct bin_table bin_fs_ocfs2_nm_table[] = {
	{ CTL_STR,	1, "hb_ctl_path" },
	{}
};

static const struct bin_table bin_fs_ocfs2_table[] = {
	{ CTL_DIR,	1,	"nm",	bin_fs_ocfs2_nm_table },
	{}
};

static const struct bin_table bin_inotify_table[] = {
	{ CTL_INT,	INOTIFY_MAX_USER_INSTANCES,	"max_user_instances" },
	{ CTL_INT,	INOTIFY_MAX_USER_WATCHES,	"max_user_watches" },
	{ CTL_INT,	INOTIFY_MAX_QUEUED_EVENTS,	"max_queued_events" },
	{}
};

static const struct bin_table bin_fs_table[] = {
	{ CTL_INT,	FS_NRINODE,		"inode-nr" },
	{ CTL_INT,	FS_STATINODE,		"inode-state" },
	/* FS_MAXINODE unused */
	/* FS_NRDQUOT unused */
	/* FS_MAXDQUOT unused */
	/* FS_NRFILE "file-nr" no longer used */
	{ CTL_INT,	FS_MAXFILE,		"file-max" },
	{ CTL_INT,	FS_DENTRY,		"dentry-state" },
	/* FS_NRSUPER unused */
	/* FS_MAXUPSER unused */
	{ CTL_INT,	FS_OVERFLOWUID,		"overflowuid" },
	{ CTL_INT,	FS_OVERFLOWGID,		"overflowgid" },
	{ CTL_INT,	FS_LEASES,		"leases-enable" },
	{ CTL_INT,	FS_DIR_NOTIFY,		"dir-notify-enable" },
	{ CTL_INT,	FS_LEASE_TIME,		"lease-break-time" },
	{ CTL_DIR,	FS_DQSTATS,		"quota",	bin_fs_quota_table },
	{ CTL_DIR,	FS_XFS,			"xfs",		bin_fs_xfs_table },
	{ CTL_ULONG,	FS_AIO_NR,		"aio-nr" },
	{ CTL_ULONG,	FS_AIO_MAX_NR,		"aio-max-nr" },
	{ CTL_DIR,	FS_INOTIFY,		"inotify",	bin_inotify_table },
	{ CTL_DIR,	FS_OCFS2,		"ocfs2",	bin_fs_ocfs2_table },
	{ CTL_INT,	KERN_SETUID_DUMPABLE,	"suid_dumpable" },
	{}
};

static const struct bin_table bin_ipmi_table[] = {
	{ CTL_INT,	DEV_IPMI_POWEROFF_POWERCYCLE,	"poweroff_powercycle" },
	{}
};

static const struct bin_table bin_mac_hid_files[] = {
	/* DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES unused */
	/* DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES unused */
	{ CTL_INT,	DEV_MAC_HID_MOUSE_BUTTON_EMULATION,	"mouse_button_emulation" },
	{ CTL_INT,	DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE,	"mouse_button2_keycode" },
	{ CTL_INT,	DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE,	"mouse_button3_keycode" },
	/* DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES unused */
	{}
};

static const struct bin_table bin_raid_table[] = {
	{ CTL_INT,	DEV_RAID_SPEED_LIMIT_MIN,	"speed_limit_min" },
	{ CTL_INT,	DEV_RAID_SPEED_LIMIT_MAX,	"speed_limit_max" },
	{}
};

static const struct bin_table bin_scsi_table[] = {
	{ CTL_INT, DEV_SCSI_LOGGING_LEVEL, "logging_level" },
	{}
};

static const struct bin_table bin_dev_table[] = {
	/* DEV_CDROM	"cdrom" no longer used */
	/* DEV_HWMON unused */
	/* DEV_PARPORT	"parport" no longer used */
	{ CTL_DIR,	DEV_RAID,	"raid",		bin_raid_table },
	{ CTL_DIR,	DEV_MAC_HID,	"mac_hid",	bin_mac_hid_files },
	{ CTL_DIR,	DEV_SCSI,	"scsi",		bin_scsi_table },
	{ CTL_DIR,	DEV_IPMI,	"ipmi",		bin_ipmi_table },
	{}
};

static const struct bin_table bin_bus_isa_table[] = {
	{ CTL_INT,	BUS_ISA_MEM_BASE,	"membase" },
	{ CTL_INT,	BUS_ISA_PORT_BASE,	"portbase" },
	{ CTL_INT,	BUS_ISA_PORT_SHIFT,	"portshift" },
	{}
};

static const struct bin_table bin_bus_table[] = {
	{ CTL_DIR,	CTL_BUS_ISA,	"isa",	bin_bus_isa_table },
	{}
};


static const struct bin_table bin_s390dbf_table[] = {
	{ CTL_INT,	5678 /* CTL_S390DBF_STOPPABLE */, "debug_stoppable" },
	{ CTL_INT,	5679 /* CTL_S390DBF_ACTIVE */,	  "debug_active" },
	{}
};

static const struct bin_table bin_sunrpc_table[] = {
	/* CTL_RPCDEBUG	"rpc_debug"  no longer used */
	/* CTL_NFSDEBUG "nfs_debug"  no longer used */
	/* CTL_NFSDDEBUG "nfsd_debug" no longer used  */
	/* CTL_NLMDEBUG "nlm_debug" no longer used */

	{ CTL_INT,	CTL_SLOTTABLE_UDP,	"udp_slot_table_entries" },
	{ CTL_INT,	CTL_SLOTTABLE_TCP,	"tcp_slot_table_entries" },
	{ CTL_INT,	CTL_MIN_RESVPORT,	"min_resvport" },
	{ CTL_INT,	CTL_MAX_RESVPORT,	"max_resvport" },
	{}
};

static const struct bin_table bin_pm_table[] = {
	/* frv specific */
	/* 1 == CTL_PM_SUSPEND	"suspend"  no longer used" */
	{ CTL_INT,	2 /* CTL_PM_CMODE */,		"cmode" },
	{ CTL_INT,	3 /* CTL_PM_P0 */,		"p0" },
	{ CTL_INT,	4 /* CTL_PM_CM */,		"cm" },
	{}
};

static const struct bin_table bin_root_table[] = {
	{ CTL_DIR,	CTL_KERN,	"kernel",	bin_kern_table },
	{ CTL_DIR,	CTL_VM,		"vm",		bin_vm_table },
	{ CTL_DIR,	CTL_NET,	"net",		bin_net_table },
	/* CTL_PROC not used */
	{ CTL_DIR,	CTL_FS,		"fs",		bin_fs_table },
	/* CTL_DEBUG "debug" no longer used */
	{ CTL_DIR,	CTL_DEV,	"dev",		bin_dev_table },
	{ CTL_DIR,	CTL_BUS,	"bus",		bin_bus_table },
	{ CTL_DIR,	CTL_ABI,	"abi" },
	/* CTL_CPU not used */
	/* CTL_ARLAN "arlan" no longer used */
	{ CTL_DIR,	CTL_S390DBF,	"s390dbf",	bin_s390dbf_table },
	{ CTL_DIR,	CTL_SUNRPC,	"sunrpc",	bin_sunrpc_table },
	{ CTL_DIR,	CTL_PM,		"pm",		bin_pm_table },
	{}
};

static ssize_t bin_dir(struct file *file,
	void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
{
	return -ENOTDIR;
}


static ssize_t bin_string(struct file *file,
	void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
{
	ssize_t result, copied = 0;

	if (oldval && oldlen) {
		char __user *lastp;
		loff_t pos = 0;
		int ch;

		result = vfs_read(file, oldval, oldlen, &pos);
		if (result < 0)
			goto out;

		copied = result;
		lastp = oldval + copied - 1;

		result = -EFAULT;
		if (get_user(ch, lastp))
			goto out;

		/* Trim off the trailing newline */
		if (ch == '\n') {
			result = -EFAULT;
			if (put_user('\0', lastp))
				goto out;
			copied -= 1;
		}
	}

	if (newval && newlen) {
		loff_t pos = 0;

		result = vfs_write(file, newval, newlen, &pos);
		if (result < 0)
			goto out;
	}

	result = copied;
out:
	return result;
}

static ssize_t bin_intvec(struct file *file,
	void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
{
	ssize_t copied = 0;
	char *buffer;
	ssize_t result;

	result = -ENOMEM;
	buffer = kmalloc(BUFSZ, GFP_KERNEL);
	if (!buffer)
		goto out;

	if (oldval && oldlen) {
		unsigned __user *vec = oldval;
		size_t length = oldlen / sizeof(*vec);
		char *str, *end;
		int i;
990
		loff_t pos = 0;
991

992
		result = kernel_read(file, buffer, BUFSZ - 1, &pos);
993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020
		if (result < 0)
			goto out_kfree;

		str = buffer;
		end = str + result;
		*end++ = '\0';
		for (i = 0; i < length; i++) {
			unsigned long value;

			value = simple_strtoul(str, &str, 10);
			while (isspace(*str))
				str++;
			
			result = -EFAULT;
			if (put_user(value, vec + i))
				goto out_kfree;

			copied += sizeof(*vec);
			if (!isdigit(*str))
				break;
		}
	}

	if (newval && newlen) {
		unsigned __user *vec = newval;
		size_t length = newlen / sizeof(*vec);
		char *str, *end;
		int i;
1021
		loff_t pos = 0;
1022 1023 1024 1025 1026 1027 1028 1029 1030 1031

		str = buffer;
		end = str + BUFSZ;
		for (i = 0; i < length; i++) {
			unsigned long value;

			result = -EFAULT;
			if (get_user(value, vec + i))
				goto out_kfree;

1032
			str += scnprintf(str, end - str, "%lu\t", value);
1033 1034
		}

1035
		result = kernel_write(file, buffer, str - buffer, &pos);
1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047
		if (result < 0)
			goto out_kfree;
	}
	result = copied;
out_kfree:
	kfree(buffer);
out:
	return result;
}

static ssize_t bin_ulongvec(struct file *file,
	void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1048
{
1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062
	ssize_t copied = 0;
	char *buffer;
	ssize_t result;

	result = -ENOMEM;
	buffer = kmalloc(BUFSZ, GFP_KERNEL);
	if (!buffer)
		goto out;

	if (oldval && oldlen) {
		unsigned long __user *vec = oldval;
		size_t length = oldlen / sizeof(*vec);
		char *str, *end;
		int i;
1063
		loff_t pos = 0;
1064

1065
		result = kernel_read(file, buffer, BUFSZ - 1, &pos);
1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086
		if (result < 0)
			goto out_kfree;

		str = buffer;
		end = str + result;
		*end++ = '\0';
		for (i = 0; i < length; i++) {
			unsigned long value;

			value = simple_strtoul(str, &str, 10);
			while (isspace(*str))
				str++;
			
			result = -EFAULT;
			if (put_user(value, vec + i))
				goto out_kfree;

			copied += sizeof(*vec);
			if (!isdigit(*str))
				break;
		}
1087 1088
	}

1089 1090 1091 1092 1093
	if (newval && newlen) {
		unsigned long __user *vec = newval;
		size_t length = newlen / sizeof(*vec);
		char *str, *end;
		int i;
1094
		loff_t pos = 0;
1095 1096 1097 1098 1099 1100 1101 1102 1103 1104

		str = buffer;
		end = str + BUFSZ;
		for (i = 0; i < length; i++) {
			unsigned long value;

			result = -EFAULT;
			if (get_user(value, vec + i))
				goto out_kfree;

1105
			str += scnprintf(str, end - str, "%lu\t", value);
1106 1107
		}

1108
		result = kernel_write(file, buffer, str - buffer, &pos);
1109 1110
		if (result < 0)
			goto out_kfree;
1111
	}
1112 1113 1114 1115 1116 1117 1118 1119 1120
	result = copied;
out_kfree:
	kfree(buffer);
out:
	return result;
}

static ssize_t bin_uuid(struct file *file,
	void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1121
{
1122 1123 1124 1125
	ssize_t result, copied = 0;

	/* Only supports reads */
	if (oldval && oldlen) {
1126
		char buf[UUID_STRING_LEN + 1];
1127
		uuid_t uuid;
1128
		loff_t pos = 0;
1129

1130
		result = kernel_read(file, buf, sizeof(buf) - 1, &pos);
1131 1132 1133 1134 1135
		if (result < 0)
			goto out;

		buf[result] = '\0';

1136
		result = -EIO;
1137
		if (uuid_parse(buf, &uuid))
1138
			goto out;
1139 1140 1141 1142 1143

		if (oldlen > 16)
			oldlen = 16;

		result = -EFAULT;
1144
		if (copy_to_user(oldval, &uuid, oldlen))
1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162
			goto out;

		copied = oldlen;
	}
	result = copied;
out:
	return result;
}

static ssize_t bin_dn_node_address(struct file *file,
	void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
{
	ssize_t result, copied = 0;

	if (oldval && oldlen) {
		char buf[15], *nodep;
		unsigned long area, node;
		__le16 dnaddr;
1163
		loff_t pos = 0;
1164

1165
		result = kernel_read(file, buf, sizeof(buf) - 1, &pos);
1166 1167 1168 1169 1170
		if (result < 0)
			goto out;

		buf[result] = '\0';

1171
		/* Convert the decnet address to binary */
1172
		result = -EIO;
1173
		nodep = strchr(buf, '.');
1174 1175
		if (!nodep)
			goto out;
1176
		++nodep;
1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197

		area = simple_strtoul(buf, NULL, 10);
		node = simple_strtoul(nodep, NULL, 10);

		result = -EIO;
		if ((area > 63)||(node > 1023))
			goto out;

		dnaddr = cpu_to_le16((area << 10) | node);

		result = -EFAULT;
		if (put_user(dnaddr, (__le16 __user *)oldval))
			goto out;

		copied = sizeof(dnaddr);
	}

	if (newval && newlen) {
		__le16 dnaddr;
		char buf[15];
		int len;
1198
		loff_t pos = 0;
1199 1200 1201 1202 1203 1204 1205 1206 1207

		result = -EINVAL;
		if (newlen != sizeof(dnaddr))
			goto out;

		result = -EFAULT;
		if (get_user(dnaddr, (__le16 __user *)newval))
			goto out;

1208
		len = scnprintf(buf, sizeof(buf), "%hu.%hu",
1209 1210 1211
				le16_to_cpu(dnaddr) >> 10,
				le16_to_cpu(dnaddr) & 0x3ff);

1212
		result = kernel_write(file, buf, len, &pos);
1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226
		if (result < 0)
			goto out;
	}

	result = copied;
out:
	return result;
}

static const struct bin_table *get_sysctl(const int *name, int nlen, char *path)
{
	const struct bin_table *table = &bin_root_table[0];
	int ctl_name;

1227 1228 1229 1230
	/* The binary sysctl tables have a small maximum depth so
	 * there is no danger of overflowing our path as it PATH_MAX
	 * bytes long.
	 */
1231 1232 1233
	memcpy(path, "sys/", 4);
	path += 4;

1234 1235
repeat:
	if (!nlen)
1236 1237 1238 1239 1240
		return ERR_PTR(-ENOTDIR);
	ctl_name = *name;
	name++;
	nlen--;
	for ( ; table->convert; table++) {
1241
		int len = 0;
1242 1243 1244 1245 1246

		/*
		 * For a wild card entry map from ifindex to network
		 * device name.
		 */
1247 1248
		if (!table->ctl_name) {
#ifdef CONFIG_NET
1249 1250
			struct net *net = current->nsproxy->net_ns;
			struct net_device *dev;
1251
			dev = dev_get_by_index(net, ctl_name);
1252 1253 1254 1255 1256 1257
			if (dev) {
				len = strlen(dev->name);
				memcpy(path, dev->name, len);
				dev_put(dev);
			}
#endif
1258 1259 1260 1261 1262
		/* Use the well known sysctl number to proc name mapping */
		} else if (ctl_name == table->ctl_name) {
			len = strlen(table->procname);
			memcpy(path, table->procname, len);
		}
1263
		if (len) {
1264
			path += len;
1265
			if (table->child) {
1266
				*path++ = '/';
1267 1268 1269
				table = table->child;
				goto repeat;
			}
1270 1271
			*path = '\0';
			return table;
1272 1273
		}
	}
1274
	return ERR_PTR(-ENOTDIR);
1275 1276
}

1277
static char *sysctl_getname(const int *name, int nlen, const struct bin_table **tablep)
1278
{
1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289
	char *tmp, *result;

	result = ERR_PTR(-ENOMEM);
	tmp = __getname();
	if (tmp) {
		const struct bin_table *table = get_sysctl(name, nlen, tmp);
		result = tmp;
		*tablep = table;
		if (IS_ERR(table)) {
			__putname(tmp);
			result = ERR_CAST(table);
1290 1291
		}
	}
1292
	return result;
1293 1294
}

1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321
static ssize_t binary_sysctl(const int *name, int nlen,
	void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
{
	const struct bin_table *table = NULL;
	struct vfsmount *mnt;
	struct file *file;
	ssize_t result;
	char *pathname;
	int flags;

	pathname = sysctl_getname(name, nlen, &table);
	result = PTR_ERR(pathname);
	if (IS_ERR(pathname))
		goto out;

	/* How should the sysctl be accessed? */
	if (oldval && oldlen && newval && newlen) {
		flags = O_RDWR;
	} else if (newval && newlen) {
		flags = O_WRONLY;
	} else if (oldval && oldlen) {
		flags = O_RDONLY;
	} else {
		result = 0;
		goto out_putname;
	}

1322
	mnt = task_active_pid_ns(current)->proc_mnt;
1323
	file = file_open_root(mnt->mnt_root, mnt, pathname, flags, 0);
1324 1325 1326 1327 1328 1329 1330 1331
	result = PTR_ERR(file);
	if (IS_ERR(file))
		goto out_putname;

	result = table->convert(file, oldval, oldlen, newval, newlen);

	fput(file);
out_putname:
1332
	__putname(pathname);
1333 1334 1335 1336 1337
out:
	return result;
}


1338 1339
#else /* CONFIG_SYSCTL_SYSCALL */

1340 1341
static ssize_t binary_sysctl(const int *name, int nlen,
	void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1342
{
1343
	return -ENOSYS;
1344 1345 1346 1347
}

#endif /* CONFIG_SYSCTL_SYSCALL */

1348

1349
static void deprecated_sysctl_warning(const int *name, int nlen)
1350 1351 1352
{
	int i;

1353 1354 1355 1356
	/*
	 * CTL_KERN/KERN_VERSION is used by older glibc and cannot
	 * ever go away.
	 */
1357
	if (nlen >= 2 && name[0] == CTL_KERN && name[1] == KERN_VERSION)
1358 1359
		return;

1360
	if (printk_ratelimit()) {
1361 1362 1363
		printk(KERN_INFO
			"warning: process `%s' used the deprecated sysctl "
			"system call with ", current->comm);
1364
		for (i = 0; i < nlen; i++)
1365 1366
			printk(KERN_CONT "%d.", name[i]);
		printk(KERN_CONT "\n");
1367
	}
1368 1369 1370
	return;
}

1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399
#define WARN_ONCE_HASH_BITS 8
#define WARN_ONCE_HASH_SIZE (1<<WARN_ONCE_HASH_BITS)

static DECLARE_BITMAP(warn_once_bitmap, WARN_ONCE_HASH_SIZE);

#define FNV32_OFFSET 2166136261U
#define FNV32_PRIME 0x01000193

/*
 * Print each legacy sysctl (approximately) only once.
 * To avoid making the tables non-const use a external
 * hash-table instead.
 * Worst case hash collision: 6, but very rarely.
 * NOTE! We don't use the SMP-safe bit tests. We simply
 * don't care enough.
 */
static void warn_on_bintable(const int *name, int nlen)
{
	int i;
	u32 hash = FNV32_OFFSET;

	for (i = 0; i < nlen; i++)
		hash = (hash ^ name[i]) * FNV32_PRIME;
	hash %= WARN_ONCE_HASH_SIZE;
	if (__test_and_set_bit(hash, warn_once_bitmap))
		return;
	deprecated_sysctl_warning(name, nlen);
}

1400 1401
static ssize_t do_sysctl(int __user *args_name, int nlen,
	void __user *oldval, size_t oldlen, void __user *newval, size_t newlen)
1402 1403 1404 1405
{
	int name[CTL_MAXNAME];
	int i;

1406 1407
	/* Check args->nlen. */
	if (nlen < 0 || nlen > CTL_MAXNAME)
1408 1409 1410 1411 1412 1413
		return -ENOTDIR;
	/* Read in the sysctl name for simplicity */
	for (i = 0; i < nlen; i++)
		if (get_user(name[i], args_name + i))
			return -EFAULT;

1414
	warn_on_bintable(name, nlen);
1415

1416
	return binary_sysctl(name, nlen, oldval, oldlen, newval, newlen);
1417 1418 1419 1420 1421
}

SYSCALL_DEFINE1(sysctl, struct __sysctl_args __user *, args)
{
	struct __sysctl_args tmp;
1422 1423
	size_t oldlen = 0;
	ssize_t result;
1424 1425 1426 1427

	if (copy_from_user(&tmp, args, sizeof(tmp)))
		return -EFAULT;

1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440
	if (tmp.oldval && !tmp.oldlenp)
		return -EFAULT;

	if (tmp.oldlenp && get_user(oldlen, tmp.oldlenp))
		return -EFAULT;

	result = do_sysctl(tmp.name, tmp.nlen, tmp.oldval, oldlen,
			   tmp.newval, tmp.newlen);

	if (result >= 0) {
		oldlen = result;
		result = 0;
	}
1441

1442 1443 1444 1445
	if (tmp.oldlenp && put_user(oldlen, tmp.oldlenp))
		return -EFAULT;

	return result;
1446
}
1447

1448

1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460
#ifdef CONFIG_COMPAT

struct compat_sysctl_args {
	compat_uptr_t	name;
	int		nlen;
	compat_uptr_t	oldval;
	compat_uptr_t	oldlenp;
	compat_uptr_t	newval;
	compat_size_t	newlen;
	compat_ulong_t	__unused[4];
};

1461
COMPAT_SYSCALL_DEFINE1(sysctl, struct compat_sysctl_args __user *, args)
1462 1463 1464 1465 1466 1467 1468 1469 1470
{
	struct compat_sysctl_args tmp;
	compat_size_t __user *compat_oldlenp;
	size_t oldlen = 0;
	ssize_t result;

	if (copy_from_user(&tmp, args, sizeof(tmp)))
		return -EFAULT;

1471 1472
	if (tmp.oldval && !tmp.oldlenp)
		return -EFAULT;
1473

1474 1475 1476
	compat_oldlenp = compat_ptr(tmp.oldlenp);
	if (compat_oldlenp && get_user(oldlen, compat_oldlenp))
		return -EFAULT;
1477 1478

	result = do_sysctl(compat_ptr(tmp.name), tmp.nlen,
1479
			   compat_ptr(tmp.oldval), oldlen,
1480 1481
			   compat_ptr(tmp.newval), tmp.newlen);

1482 1483 1484
	if (result >= 0) {
		oldlen = result;
		result = 0;
1485 1486
	}

1487 1488 1489
	if (compat_oldlenp && put_user(oldlen, compat_oldlenp))
		return -EFAULT;

1490 1491 1492 1493
	return result;
}

#endif /* CONFIG_COMPAT */