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kernel-ark/include/linux/sysctl.h
Eric W. Biederman fc6cd25b73 sysctl: Error on bad sysctl tables 
After going through the kernels sysctl tables several times it has become
clear that code review and testing is just not effective in prevent
problematic sysctl tables from being used in the stable kernel.  I certainly
can't seem to fix the problems as fast as they are introduced.

Therefore this patch adds sysctl_check_table which is called when a sysctl
table is registered and checks to see if we have a problematic sysctl table.

The biggest part of the code is the table of valid binary sysctl entries, but
since we have frozen our set of binary sysctls this table should not need to
change, and it makes it much easier to detect when someone unintentionally
adds a new binary sysctl value.

As best as I can determine all of the several hundred errors spewed on boot up
now are legitimate.

[bunk@kernel.org: kernel/sysctl_check.c must #include <linux/string.h>]
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Alexey Dobriyan <adobriyan@sw.ru>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-18 14:37:23 -07:00

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/*
* sysctl.h: General linux system control interface
*
* Begun 24 March 1995, Stephen Tweedie
*
****************************************************************
****************************************************************
**
** WARNING:
** The values in this file are exported to user space via
** the sysctl() binary interface. Do *NOT* change the
** numbering of any existing values here, and do not change
** any numbers within any one set of values. If you have to
** redefine an existing interface, use a new number for it.
** The kernel will then return -ENOTDIR to any application using
** the old binary interface.
**
** For new interfaces unless you really need a binary number
** please use CTL_UNNUMBERED.
**
****************************************************************
****************************************************************
*/
#ifndef _LINUX_SYSCTL_H
#define _LINUX_SYSCTL_H
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/compiler.h>
struct file;
struct completion;
#define CTL_MAXNAME 10 /* how many path components do we allow in a
call to sysctl? In other words, what is
the largest acceptable value for the nlen
member of a struct __sysctl_args to have? */
struct __sysctl_args {
int __user *name;
int nlen;
void __user *oldval;
size_t __user *oldlenp;
void __user *newval;
size_t newlen;
unsigned long __unused[4];
};
/* Define sysctl names first */
/* Top-level names: */
/* For internal pattern-matching use only: */
#ifdef __KERNEL__
#define CTL_NONE 0
#define CTL_UNNUMBERED CTL_NONE /* sysctl without a binary number */
#endif
enum
{
CTL_KERN=1, /* General kernel info and control */
CTL_VM=2, /* VM management */
CTL_NET=3, /* Networking */
CTL_PROC=4, /* removal breaks strace(1) compilation */
CTL_FS=5, /* Filesystems */
CTL_DEBUG=6, /* Debugging */
CTL_DEV=7, /* Devices */
CTL_BUS=8, /* Busses */
CTL_ABI=9, /* Binary emulation */
CTL_CPU=10, /* CPU stuff (speed scaling, etc) */
CTL_ARLAN=254, /* arlan wireless driver */
CTL_APPLDATA=2120, /* s390 appldata */
CTL_S390DBF=5677, /* s390 debug */
CTL_SUNRPC=7249, /* sunrpc debug */
CTL_PM=9899, /* frv power management */
CTL_FRV=9898, /* frv specific sysctls */
};
/* CTL_BUS names: */
enum
{
CTL_BUS_ISA=1 /* ISA */
};
/* /proc/sys/fs/inotify/ */
enum
{
INOTIFY_MAX_USER_INSTANCES=1, /* max instances per user */
INOTIFY_MAX_USER_WATCHES=2, /* max watches per user */
INOTIFY_MAX_QUEUED_EVENTS=3 /* max queued events per instance */
};
/* CTL_KERN names: */
enum
{
KERN_OSTYPE=1, /* string: system version */
KERN_OSRELEASE=2, /* string: system release */
KERN_OSREV=3, /* int: system revision */
KERN_VERSION=4, /* string: compile time info */
KERN_SECUREMASK=5, /* struct: maximum rights mask */
KERN_PROF=6, /* table: profiling information */
KERN_NODENAME=7,
KERN_DOMAINNAME=8,
KERN_CAP_BSET=14, /* int: capability bounding set */
KERN_PANIC=15, /* int: panic timeout */
KERN_REALROOTDEV=16, /* real root device to mount after initrd */
KERN_SPARC_REBOOT=21, /* reboot command on Sparc */
KERN_CTLALTDEL=22, /* int: allow ctl-alt-del to reboot */
KERN_PRINTK=23, /* struct: control printk logging parameters */
KERN_NAMETRANS=24, /* Name translation */
KERN_PPC_HTABRECLAIM=25, /* turn htab reclaimation on/off on PPC */
KERN_PPC_ZEROPAGED=26, /* turn idle page zeroing on/off on PPC */
KERN_PPC_POWERSAVE_NAP=27, /* use nap mode for power saving */
KERN_MODPROBE=28,
KERN_SG_BIG_BUFF=29,
KERN_ACCT=30, /* BSD process accounting parameters */
KERN_PPC_L2CR=31, /* l2cr register on PPC */
KERN_RTSIGNR=32, /* Number of rt sigs queued */
KERN_RTSIGMAX=33, /* Max queuable */
KERN_SHMMAX=34, /* long: Maximum shared memory segment */
KERN_MSGMAX=35, /* int: Maximum size of a messege */
KERN_MSGMNB=36, /* int: Maximum message queue size */
KERN_MSGPOOL=37, /* int: Maximum system message pool size */
KERN_SYSRQ=38, /* int: Sysreq enable */
KERN_MAX_THREADS=39, /* int: Maximum nr of threads in the system */
KERN_RANDOM=40, /* Random driver */
KERN_SHMALL=41, /* int: Maximum size of shared memory */
KERN_MSGMNI=42, /* int: msg queue identifiers */
KERN_SEM=43, /* struct: sysv semaphore limits */
KERN_SPARC_STOP_A=44, /* int: Sparc Stop-A enable */
KERN_SHMMNI=45, /* int: shm array identifiers */
KERN_OVERFLOWUID=46, /* int: overflow UID */
KERN_OVERFLOWGID=47, /* int: overflow GID */
KERN_SHMPATH=48, /* string: path to shm fs */
KERN_HOTPLUG=49, /* string: path to uevent helper (deprecated) */
KERN_IEEE_EMULATION_WARNINGS=50, /* int: unimplemented ieee instructions */
KERN_S390_USER_DEBUG_LOGGING=51, /* int: dumps of user faults */
KERN_CORE_USES_PID=52, /* int: use core or core.%pid */
KERN_TAINTED=53, /* int: various kernel tainted flags */
KERN_CADPID=54, /* int: PID of the process to notify on CAD */
KERN_PIDMAX=55, /* int: PID # limit */
KERN_CORE_PATTERN=56, /* string: pattern for core-file names */
KERN_PANIC_ON_OOPS=57, /* int: whether we will panic on an oops */
KERN_HPPA_PWRSW=58, /* int: hppa soft-power enable */
KERN_HPPA_UNALIGNED=59, /* int: hppa unaligned-trap enable */
KERN_PRINTK_RATELIMIT=60, /* int: tune printk ratelimiting */
KERN_PRINTK_RATELIMIT_BURST=61, /* int: tune printk ratelimiting */
KERN_PTY=62, /* dir: pty driver */
KERN_NGROUPS_MAX=63, /* int: NGROUPS_MAX */
KERN_SPARC_SCONS_PWROFF=64, /* int: serial console power-off halt */
KERN_HZ_TIMER=65, /* int: hz timer on or off */
KERN_UNKNOWN_NMI_PANIC=66, /* int: unknown nmi panic flag */
KERN_BOOTLOADER_TYPE=67, /* int: boot loader type */
KERN_RANDOMIZE=68, /* int: randomize virtual address space */
KERN_SETUID_DUMPABLE=69, /* int: behaviour of dumps for setuid core */
KERN_SPIN_RETRY=70, /* int: number of spinlock retries */
KERN_ACPI_VIDEO_FLAGS=71, /* int: flags for setting up video after ACPI sleep */
KERN_IA64_UNALIGNED=72, /* int: ia64 unaligned userland trap enable */
KERN_COMPAT_LOG=73, /* int: print compat layer messages */
KERN_MAX_LOCK_DEPTH=74,
KERN_NMI_WATCHDOG=75, /* int: enable/disable nmi watchdog */
KERN_PANIC_ON_NMI=76, /* int: whether we will panic on an unrecovered */
};
/* CTL_VM names: */
enum
{
VM_UNUSED1=1, /* was: struct: Set vm swapping control */
VM_UNUSED2=2, /* was; int: Linear or sqrt() swapout for hogs */
VM_UNUSED3=3, /* was: struct: Set free page thresholds */
VM_UNUSED4=4, /* Spare */
VM_OVERCOMMIT_MEMORY=5, /* Turn off the virtual memory safety limit */
VM_UNUSED5=6, /* was: struct: Set buffer memory thresholds */
VM_UNUSED7=7, /* was: struct: Set cache memory thresholds */
VM_UNUSED8=8, /* was: struct: Control kswapd behaviour */
VM_UNUSED9=9, /* was: struct: Set page table cache parameters */
VM_PAGE_CLUSTER=10, /* int: set number of pages to swap together */
VM_DIRTY_BACKGROUND=11, /* dirty_background_ratio */
VM_DIRTY_RATIO=12, /* dirty_ratio */
VM_DIRTY_WB_CS=13, /* dirty_writeback_centisecs */
VM_DIRTY_EXPIRE_CS=14, /* dirty_expire_centisecs */
VM_NR_PDFLUSH_THREADS=15, /* nr_pdflush_threads */
VM_OVERCOMMIT_RATIO=16, /* percent of RAM to allow overcommit in */
VM_PAGEBUF=17, /* struct: Control pagebuf parameters */
VM_HUGETLB_PAGES=18, /* int: Number of available Huge Pages */
VM_SWAPPINESS=19, /* Tendency to steal mapped memory */
VM_LOWMEM_RESERVE_RATIO=20,/* reservation ratio for lower memory zones */
VM_MIN_FREE_KBYTES=21, /* Minimum free kilobytes to maintain */
VM_MAX_MAP_COUNT=22, /* int: Maximum number of mmaps/address-space */
VM_LAPTOP_MODE=23, /* vm laptop mode */
VM_BLOCK_DUMP=24, /* block dump mode */
VM_HUGETLB_GROUP=25, /* permitted hugetlb group */
VM_VFS_CACHE_PRESSURE=26, /* dcache/icache reclaim pressure */
VM_LEGACY_VA_LAYOUT=27, /* legacy/compatibility virtual address space layout */
VM_SWAP_TOKEN_TIMEOUT=28, /* default time for token time out */
VM_DROP_PAGECACHE=29, /* int: nuke lots of pagecache */
VM_PERCPU_PAGELIST_FRACTION=30,/* int: fraction of pages in each percpu_pagelist */
VM_ZONE_RECLAIM_MODE=31, /* reclaim local zone memory before going off node */
VM_MIN_UNMAPPED=32, /* Set min percent of unmapped pages */
VM_PANIC_ON_OOM=33, /* panic at out-of-memory */
VM_VDSO_ENABLED=34, /* map VDSO into new processes? */
VM_MIN_SLAB=35, /* Percent pages ignored by zone reclaim */
/* s390 vm cmm sysctls */
VM_CMM_PAGES=1111,
VM_CMM_TIMED_PAGES=1112,
VM_CMM_TIMEOUT=1113,
};
/* CTL_NET names: */
enum
{
NET_CORE=1,
NET_ETHER=2,
NET_802=3,
NET_UNIX=4,
NET_IPV4=5,
NET_IPX=6,
NET_ATALK=7,
NET_NETROM=8,
NET_AX25=9,
NET_BRIDGE=10,
NET_ROSE=11,
NET_IPV6=12,
NET_X25=13,
NET_TR=14,
NET_DECNET=15,
NET_ECONET=16,
NET_SCTP=17,
NET_LLC=18,
NET_NETFILTER=19,
NET_DCCP=20,
NET_IRDA=412,
};
/* /proc/sys/kernel/random */
enum
{
RANDOM_POOLSIZE=1,
RANDOM_ENTROPY_COUNT=2,
RANDOM_READ_THRESH=3,
RANDOM_WRITE_THRESH=4,
RANDOM_BOOT_ID=5,
RANDOM_UUID=6
};
/* /proc/sys/kernel/pty */
enum
{
PTY_MAX=1,
PTY_NR=2
};
/* /proc/sys/bus/isa */
enum
{
BUS_ISA_MEM_BASE=1,
BUS_ISA_PORT_BASE=2,
BUS_ISA_PORT_SHIFT=3
};
/* /proc/sys/net/core */
enum
{
NET_CORE_WMEM_MAX=1,
NET_CORE_RMEM_MAX=2,
NET_CORE_WMEM_DEFAULT=3,
NET_CORE_RMEM_DEFAULT=4,
/* was NET_CORE_DESTROY_DELAY */
NET_CORE_MAX_BACKLOG=6,
NET_CORE_FASTROUTE=7,
NET_CORE_MSG_COST=8,
NET_CORE_MSG_BURST=9,
NET_CORE_OPTMEM_MAX=10,
NET_CORE_HOT_LIST_LENGTH=11,
NET_CORE_DIVERT_VERSION=12,
NET_CORE_NO_CONG_THRESH=13,
NET_CORE_NO_CONG=14,
NET_CORE_LO_CONG=15,
NET_CORE_MOD_CONG=16,
NET_CORE_DEV_WEIGHT=17,
NET_CORE_SOMAXCONN=18,
NET_CORE_BUDGET=19,
NET_CORE_AEVENT_ETIME=20,
NET_CORE_AEVENT_RSEQTH=21,
NET_CORE_WARNINGS=22,
};
/* /proc/sys/net/ethernet */
/* /proc/sys/net/802 */
/* /proc/sys/net/unix */
enum
{
NET_UNIX_DESTROY_DELAY=1,
NET_UNIX_DELETE_DELAY=2,
NET_UNIX_MAX_DGRAM_QLEN=3,
};
/* /proc/sys/net/netfilter */
enum
{
NET_NF_CONNTRACK_MAX=1,
NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2,
NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3,
NET_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4,
NET_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5,
NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6,
NET_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7,
NET_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8,
NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9,
NET_NF_CONNTRACK_UDP_TIMEOUT=10,
NET_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11,
NET_NF_CONNTRACK_ICMP_TIMEOUT=12,
NET_NF_CONNTRACK_GENERIC_TIMEOUT=13,
NET_NF_CONNTRACK_BUCKETS=14,
NET_NF_CONNTRACK_LOG_INVALID=15,
NET_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16,
NET_NF_CONNTRACK_TCP_LOOSE=17,
NET_NF_CONNTRACK_TCP_BE_LIBERAL=18,
NET_NF_CONNTRACK_TCP_MAX_RETRANS=19,
NET_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20,
NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21,
NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22,
NET_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23,
NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24,
NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25,
NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26,
NET_NF_CONNTRACK_COUNT=27,
NET_NF_CONNTRACK_ICMPV6_TIMEOUT=28,
NET_NF_CONNTRACK_FRAG6_TIMEOUT=29,
NET_NF_CONNTRACK_FRAG6_LOW_THRESH=30,
NET_NF_CONNTRACK_FRAG6_HIGH_THRESH=31,
NET_NF_CONNTRACK_CHECKSUM=32,
};
/* /proc/sys/net/ipv4 */
enum
{
/* v2.0 compatibile variables */
NET_IPV4_FORWARD=8,
NET_IPV4_DYNADDR=9,
NET_IPV4_CONF=16,
NET_IPV4_NEIGH=17,
NET_IPV4_ROUTE=18,
NET_IPV4_FIB_HASH=19,
NET_IPV4_NETFILTER=20,
NET_IPV4_TCP_TIMESTAMPS=33,
NET_IPV4_TCP_WINDOW_SCALING=34,
NET_IPV4_TCP_SACK=35,
NET_IPV4_TCP_RETRANS_COLLAPSE=36,
NET_IPV4_DEFAULT_TTL=37,
NET_IPV4_AUTOCONFIG=38,
NET_IPV4_NO_PMTU_DISC=39,
NET_IPV4_TCP_SYN_RETRIES=40,
NET_IPV4_IPFRAG_HIGH_THRESH=41,
NET_IPV4_IPFRAG_LOW_THRESH=42,
NET_IPV4_IPFRAG_TIME=43,
NET_IPV4_TCP_MAX_KA_PROBES=44,
NET_IPV4_TCP_KEEPALIVE_TIME=45,
NET_IPV4_TCP_KEEPALIVE_PROBES=46,
NET_IPV4_TCP_RETRIES1=47,
NET_IPV4_TCP_RETRIES2=48,
NET_IPV4_TCP_FIN_TIMEOUT=49,
NET_IPV4_IP_MASQ_DEBUG=50,
NET_TCP_SYNCOOKIES=51,
NET_TCP_STDURG=52,
NET_TCP_RFC1337=53,
NET_TCP_SYN_TAILDROP=54,
NET_TCP_MAX_SYN_BACKLOG=55,
NET_IPV4_LOCAL_PORT_RANGE=56,
NET_IPV4_ICMP_ECHO_IGNORE_ALL=57,
NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS=58,
NET_IPV4_ICMP_SOURCEQUENCH_RATE=59,
NET_IPV4_ICMP_DESTUNREACH_RATE=60,
NET_IPV4_ICMP_TIMEEXCEED_RATE=61,
NET_IPV4_ICMP_PARAMPROB_RATE=62,
NET_IPV4_ICMP_ECHOREPLY_RATE=63,
NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES=64,
NET_IPV4_IGMP_MAX_MEMBERSHIPS=65,
NET_TCP_TW_RECYCLE=66,
NET_IPV4_ALWAYS_DEFRAG=67,
NET_IPV4_TCP_KEEPALIVE_INTVL=68,
NET_IPV4_INET_PEER_THRESHOLD=69,
NET_IPV4_INET_PEER_MINTTL=70,
NET_IPV4_INET_PEER_MAXTTL=71,
NET_IPV4_INET_PEER_GC_MINTIME=72,
NET_IPV4_INET_PEER_GC_MAXTIME=73,
NET_TCP_ORPHAN_RETRIES=74,
NET_TCP_ABORT_ON_OVERFLOW=75,
NET_TCP_SYNACK_RETRIES=76,
NET_TCP_MAX_ORPHANS=77,
NET_TCP_MAX_TW_BUCKETS=78,
NET_TCP_FACK=79,
NET_TCP_REORDERING=80,
NET_TCP_ECN=81,
NET_TCP_DSACK=82,
NET_TCP_MEM=83,
NET_TCP_WMEM=84,
NET_TCP_RMEM=85,
NET_TCP_APP_WIN=86,
NET_TCP_ADV_WIN_SCALE=87,
NET_IPV4_NONLOCAL_BIND=88,
NET_IPV4_ICMP_RATELIMIT=89,
NET_IPV4_ICMP_RATEMASK=90,
NET_TCP_TW_REUSE=91,
NET_TCP_FRTO=92,
NET_TCP_LOW_LATENCY=93,
NET_IPV4_IPFRAG_SECRET_INTERVAL=94,
NET_IPV4_IGMP_MAX_MSF=96,
NET_TCP_NO_METRICS_SAVE=97,
NET_TCP_DEFAULT_WIN_SCALE=105,
NET_TCP_MODERATE_RCVBUF=106,
NET_TCP_TSO_WIN_DIVISOR=107,
NET_TCP_BIC_BETA=108,
NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR=109,
NET_TCP_CONG_CONTROL=110,
NET_TCP_ABC=111,
NET_IPV4_IPFRAG_MAX_DIST=112,
NET_TCP_MTU_PROBING=113,
NET_TCP_BASE_MSS=114,
NET_IPV4_TCP_WORKAROUND_SIGNED_WINDOWS=115,
NET_TCP_DMA_COPYBREAK=116,
NET_TCP_SLOW_START_AFTER_IDLE=117,
NET_CIPSOV4_CACHE_ENABLE=118,
NET_CIPSOV4_CACHE_BUCKET_SIZE=119,
NET_CIPSOV4_RBM_OPTFMT=120,
NET_CIPSOV4_RBM_STRICTVALID=121,
NET_TCP_AVAIL_CONG_CONTROL=122,
NET_TCP_ALLOWED_CONG_CONTROL=123,
NET_TCP_MAX_SSTHRESH=124,
NET_TCP_FRTO_RESPONSE=125,
};
enum {
NET_IPV4_ROUTE_FLUSH=1,
NET_IPV4_ROUTE_MIN_DELAY=2,
NET_IPV4_ROUTE_MAX_DELAY=3,
NET_IPV4_ROUTE_GC_THRESH=4,
NET_IPV4_ROUTE_MAX_SIZE=5,
NET_IPV4_ROUTE_GC_MIN_INTERVAL=6,
NET_IPV4_ROUTE_GC_TIMEOUT=7,
NET_IPV4_ROUTE_GC_INTERVAL=8,
NET_IPV4_ROUTE_REDIRECT_LOAD=9,
NET_IPV4_ROUTE_REDIRECT_NUMBER=10,
NET_IPV4_ROUTE_REDIRECT_SILENCE=11,
NET_IPV4_ROUTE_ERROR_COST=12,
NET_IPV4_ROUTE_ERROR_BURST=13,
NET_IPV4_ROUTE_GC_ELASTICITY=14,
NET_IPV4_ROUTE_MTU_EXPIRES=15,
NET_IPV4_ROUTE_MIN_PMTU=16,
NET_IPV4_ROUTE_MIN_ADVMSS=17,
NET_IPV4_ROUTE_SECRET_INTERVAL=18,
NET_IPV4_ROUTE_GC_MIN_INTERVAL_MS=19,
};
enum
{
NET_PROTO_CONF_ALL=-2,
NET_PROTO_CONF_DEFAULT=-3
/* And device ifindices ... */
};
enum
{
NET_IPV4_CONF_FORWARDING=1,
NET_IPV4_CONF_MC_FORWARDING=2,
NET_IPV4_CONF_PROXY_ARP=3,
NET_IPV4_CONF_ACCEPT_REDIRECTS=4,
NET_IPV4_CONF_SECURE_REDIRECTS=5,
NET_IPV4_CONF_SEND_REDIRECTS=6,
NET_IPV4_CONF_SHARED_MEDIA=7,
NET_IPV4_CONF_RP_FILTER=8,
NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE=9,
NET_IPV4_CONF_BOOTP_RELAY=10,
NET_IPV4_CONF_LOG_MARTIANS=11,
NET_IPV4_CONF_TAG=12,
NET_IPV4_CONF_ARPFILTER=13,
NET_IPV4_CONF_MEDIUM_ID=14,
NET_IPV4_CONF_NOXFRM=15,
NET_IPV4_CONF_NOPOLICY=16,
NET_IPV4_CONF_FORCE_IGMP_VERSION=17,
NET_IPV4_CONF_ARP_ANNOUNCE=18,
NET_IPV4_CONF_ARP_IGNORE=19,
NET_IPV4_CONF_PROMOTE_SECONDARIES=20,
NET_IPV4_CONF_ARP_ACCEPT=21,
__NET_IPV4_CONF_MAX
};
/* /proc/sys/net/ipv4/netfilter */
enum
{
NET_IPV4_NF_CONNTRACK_MAX=1,
NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2,
NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3,
NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4,
NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5,
NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6,
NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7,
NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8,
NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9,
NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT=10,
NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11,
NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT=12,
NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT=13,
NET_IPV4_NF_CONNTRACK_BUCKETS=14,
NET_IPV4_NF_CONNTRACK_LOG_INVALID=15,
NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16,
NET_IPV4_NF_CONNTRACK_TCP_LOOSE=17,
NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL=18,
NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS=19,
NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20,
NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21,
NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22,
NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23,
NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24,
NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25,
NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26,
NET_IPV4_NF_CONNTRACK_COUNT=27,
NET_IPV4_NF_CONNTRACK_CHECKSUM=28,
};
/* /proc/sys/net/ipv6 */
enum {
NET_IPV6_CONF=16,
NET_IPV6_NEIGH=17,
NET_IPV6_ROUTE=18,
NET_IPV6_ICMP=19,
NET_IPV6_BINDV6ONLY=20,
NET_IPV6_IP6FRAG_HIGH_THRESH=21,
NET_IPV6_IP6FRAG_LOW_THRESH=22,
NET_IPV6_IP6FRAG_TIME=23,
NET_IPV6_IP6FRAG_SECRET_INTERVAL=24,
NET_IPV6_MLD_MAX_MSF=25,
};
enum {
NET_IPV6_ROUTE_FLUSH=1,
NET_IPV6_ROUTE_GC_THRESH=2,
NET_IPV6_ROUTE_MAX_SIZE=3,
NET_IPV6_ROUTE_GC_MIN_INTERVAL=4,
NET_IPV6_ROUTE_GC_TIMEOUT=5,
NET_IPV6_ROUTE_GC_INTERVAL=6,
NET_IPV6_ROUTE_GC_ELASTICITY=7,
NET_IPV6_ROUTE_MTU_EXPIRES=8,
NET_IPV6_ROUTE_MIN_ADVMSS=9,
NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS=10
};
enum {
NET_IPV6_FORWARDING=1,
NET_IPV6_HOP_LIMIT=2,
NET_IPV6_MTU=3,
NET_IPV6_ACCEPT_RA=4,
NET_IPV6_ACCEPT_REDIRECTS=5,
NET_IPV6_AUTOCONF=6,
NET_IPV6_DAD_TRANSMITS=7,
NET_IPV6_RTR_SOLICITS=8,
NET_IPV6_RTR_SOLICIT_INTERVAL=9,
NET_IPV6_RTR_SOLICIT_DELAY=10,
NET_IPV6_USE_TEMPADDR=11,
NET_IPV6_TEMP_VALID_LFT=12,
NET_IPV6_TEMP_PREFERED_LFT=13,
NET_IPV6_REGEN_MAX_RETRY=14,
NET_IPV6_MAX_DESYNC_FACTOR=15,
NET_IPV6_MAX_ADDRESSES=16,
NET_IPV6_FORCE_MLD_VERSION=17,
NET_IPV6_ACCEPT_RA_DEFRTR=18,
NET_IPV6_ACCEPT_RA_PINFO=19,
NET_IPV6_ACCEPT_RA_RTR_PREF=20,
NET_IPV6_RTR_PROBE_INTERVAL=21,
NET_IPV6_ACCEPT_RA_RT_INFO_MAX_PLEN=22,
NET_IPV6_PROXY_NDP=23,
NET_IPV6_ACCEPT_SOURCE_ROUTE=25,
__NET_IPV6_MAX
};
/* /proc/sys/net/ipv6/icmp */
enum {
NET_IPV6_ICMP_RATELIMIT=1
};
/* /proc/sys/net/<protocol>/neigh/<dev> */
enum {
NET_NEIGH_MCAST_SOLICIT=1,
NET_NEIGH_UCAST_SOLICIT=2,
NET_NEIGH_APP_SOLICIT=3,
NET_NEIGH_RETRANS_TIME=4,
NET_NEIGH_REACHABLE_TIME=5,
NET_NEIGH_DELAY_PROBE_TIME=6,
NET_NEIGH_GC_STALE_TIME=7,
NET_NEIGH_UNRES_QLEN=8,
NET_NEIGH_PROXY_QLEN=9,
NET_NEIGH_ANYCAST_DELAY=10,
NET_NEIGH_PROXY_DELAY=11,
NET_NEIGH_LOCKTIME=12,
NET_NEIGH_GC_INTERVAL=13,
NET_NEIGH_GC_THRESH1=14,
NET_NEIGH_GC_THRESH2=15,
NET_NEIGH_GC_THRESH3=16,
NET_NEIGH_RETRANS_TIME_MS=17,
NET_NEIGH_REACHABLE_TIME_MS=18,
__NET_NEIGH_MAX
};
/* /proc/sys/net/dccp */
enum {
NET_DCCP_DEFAULT=1,
};
/* /proc/sys/net/ipx */
enum {
NET_IPX_PPROP_BROADCASTING=1,
NET_IPX_FORWARDING=2
};
/* /proc/sys/net/llc */
enum {
NET_LLC2=1,
NET_LLC_STATION=2,
};
/* /proc/sys/net/llc/llc2 */
enum {
NET_LLC2_TIMEOUT=1,
};
/* /proc/sys/net/llc/station */
enum {
NET_LLC_STATION_ACK_TIMEOUT=1,
};
/* /proc/sys/net/llc/llc2/timeout */
enum {
NET_LLC2_ACK_TIMEOUT=1,
NET_LLC2_P_TIMEOUT=2,
NET_LLC2_REJ_TIMEOUT=3,
NET_LLC2_BUSY_TIMEOUT=4,
};
/* /proc/sys/net/appletalk */
enum {
NET_ATALK_AARP_EXPIRY_TIME=1,
NET_ATALK_AARP_TICK_TIME=2,
NET_ATALK_AARP_RETRANSMIT_LIMIT=3,
NET_ATALK_AARP_RESOLVE_TIME=4
};
/* /proc/sys/net/netrom */
enum {
NET_NETROM_DEFAULT_PATH_QUALITY=1,
NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER=2,
NET_NETROM_NETWORK_TTL_INITIALISER=3,
NET_NETROM_TRANSPORT_TIMEOUT=4,
NET_NETROM_TRANSPORT_MAXIMUM_TRIES=5,
NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY=6,
NET_NETROM_TRANSPORT_BUSY_DELAY=7,
NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE=8,
NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT=9,
NET_NETROM_ROUTING_CONTROL=10,
NET_NETROM_LINK_FAILS_COUNT=11,
NET_NETROM_RESET=12
};
/* /proc/sys/net/ax25 */
enum {
NET_AX25_IP_DEFAULT_MODE=1,
NET_AX25_DEFAULT_MODE=2,
NET_AX25_BACKOFF_TYPE=3,
NET_AX25_CONNECT_MODE=4,
NET_AX25_STANDARD_WINDOW=5,
NET_AX25_EXTENDED_WINDOW=6,
NET_AX25_T1_TIMEOUT=7,
NET_AX25_T2_TIMEOUT=8,
NET_AX25_T3_TIMEOUT=9,
NET_AX25_IDLE_TIMEOUT=10,
NET_AX25_N2=11,
NET_AX25_PACLEN=12,
NET_AX25_PROTOCOL=13,
NET_AX25_DAMA_SLAVE_TIMEOUT=14
};
/* /proc/sys/net/rose */
enum {
NET_ROSE_RESTART_REQUEST_TIMEOUT=1,
NET_ROSE_CALL_REQUEST_TIMEOUT=2,
NET_ROSE_RESET_REQUEST_TIMEOUT=3,
NET_ROSE_CLEAR_REQUEST_TIMEOUT=4,
NET_ROSE_ACK_HOLD_BACK_TIMEOUT=5,
NET_ROSE_ROUTING_CONTROL=6,
NET_ROSE_LINK_FAIL_TIMEOUT=7,
NET_ROSE_MAX_VCS=8,
NET_ROSE_WINDOW_SIZE=9,
NET_ROSE_NO_ACTIVITY_TIMEOUT=10
};
/* /proc/sys/net/x25 */
enum {
NET_X25_RESTART_REQUEST_TIMEOUT=1,
NET_X25_CALL_REQUEST_TIMEOUT=2,
NET_X25_RESET_REQUEST_TIMEOUT=3,
NET_X25_CLEAR_REQUEST_TIMEOUT=4,
NET_X25_ACK_HOLD_BACK_TIMEOUT=5,
NET_X25_FORWARD=6
};
/* /proc/sys/net/token-ring */
enum
{
NET_TR_RIF_TIMEOUT=1
};
/* /proc/sys/net/decnet/ */
enum {
NET_DECNET_NODE_TYPE = 1,
NET_DECNET_NODE_ADDRESS = 2,
NET_DECNET_NODE_NAME = 3,
NET_DECNET_DEFAULT_DEVICE = 4,
NET_DECNET_TIME_WAIT = 5,
NET_DECNET_DN_COUNT = 6,
NET_DECNET_DI_COUNT = 7,
NET_DECNET_DR_COUNT = 8,
NET_DECNET_DST_GC_INTERVAL = 9,
NET_DECNET_CONF = 10,
NET_DECNET_NO_FC_MAX_CWND = 11,
NET_DECNET_MEM = 12,
NET_DECNET_RMEM = 13,
NET_DECNET_WMEM = 14,
NET_DECNET_DEBUG_LEVEL = 255
};
/* /proc/sys/net/decnet/conf/<dev> */
enum {
NET_DECNET_CONF_LOOPBACK = -2,
NET_DECNET_CONF_DDCMP = -3,
NET_DECNET_CONF_PPP = -4,
NET_DECNET_CONF_X25 = -5,
NET_DECNET_CONF_GRE = -6,
NET_DECNET_CONF_ETHER = -7
/* ... and ifindex of devices */
};
/* /proc/sys/net/decnet/conf/<dev>/ */
enum {
NET_DECNET_CONF_DEV_PRIORITY = 1,
NET_DECNET_CONF_DEV_T1 = 2,
NET_DECNET_CONF_DEV_T2 = 3,
NET_DECNET_CONF_DEV_T3 = 4,
NET_DECNET_CONF_DEV_FORWARDING = 5,
NET_DECNET_CONF_DEV_BLKSIZE = 6,
NET_DECNET_CONF_DEV_STATE = 7
};
/* /proc/sys/net/sctp */
enum {
NET_SCTP_RTO_INITIAL = 1,
NET_SCTP_RTO_MIN = 2,
NET_SCTP_RTO_MAX = 3,
NET_SCTP_RTO_ALPHA = 4,
NET_SCTP_RTO_BETA = 5,
NET_SCTP_VALID_COOKIE_LIFE = 6,
NET_SCTP_ASSOCIATION_MAX_RETRANS = 7,
NET_SCTP_PATH_MAX_RETRANS = 8,
NET_SCTP_MAX_INIT_RETRANSMITS = 9,
NET_SCTP_HB_INTERVAL = 10,
NET_SCTP_PRESERVE_ENABLE = 11,
NET_SCTP_MAX_BURST = 12,
NET_SCTP_ADDIP_ENABLE = 13,
NET_SCTP_PRSCTP_ENABLE = 14,
NET_SCTP_SNDBUF_POLICY = 15,
NET_SCTP_SACK_TIMEOUT = 16,
NET_SCTP_RCVBUF_POLICY = 17,
};
/* /proc/sys/net/bridge */
enum {
NET_BRIDGE_NF_CALL_ARPTABLES = 1,
NET_BRIDGE_NF_CALL_IPTABLES = 2,
NET_BRIDGE_NF_CALL_IP6TABLES = 3,
NET_BRIDGE_NF_FILTER_VLAN_TAGGED = 4,
NET_BRIDGE_NF_FILTER_PPPOE_TAGGED = 5,
};
/* proc/sys/net/irda */
enum {
NET_IRDA_DISCOVERY=1,
NET_IRDA_DEVNAME=2,
NET_IRDA_DEBUG=3,
NET_IRDA_FAST_POLL=4,
NET_IRDA_DISCOVERY_SLOTS=5,
NET_IRDA_DISCOVERY_TIMEOUT=6,
NET_IRDA_SLOT_TIMEOUT=7,
NET_IRDA_MAX_BAUD_RATE=8,
NET_IRDA_MIN_TX_TURN_TIME=9,
NET_IRDA_MAX_TX_DATA_SIZE=10,
NET_IRDA_MAX_TX_WINDOW=11,
NET_IRDA_MAX_NOREPLY_TIME=12,
NET_IRDA_WARN_NOREPLY_TIME=13,
NET_IRDA_LAP_KEEPALIVE_TIME=14,
};
/* CTL_FS names: */
enum
{
FS_NRINODE=1, /* int:current number of allocated inodes */
FS_STATINODE=2,
FS_MAXINODE=3, /* int:maximum number of inodes that can be allocated */
FS_NRDQUOT=4, /* int:current number of allocated dquots */
FS_MAXDQUOT=5, /* int:maximum number of dquots that can be allocated */
FS_NRFILE=6, /* int:current number of allocated filedescriptors */
FS_MAXFILE=7, /* int:maximum number of filedescriptors that can be allocated */
FS_DENTRY=8,
FS_NRSUPER=9, /* int:current number of allocated super_blocks */
FS_MAXSUPER=10, /* int:maximum number of super_blocks that can be allocated */
FS_OVERFLOWUID=11, /* int: overflow UID */
FS_OVERFLOWGID=12, /* int: overflow GID */
FS_LEASES=13, /* int: leases enabled */
FS_DIR_NOTIFY=14, /* int: directory notification enabled */
FS_LEASE_TIME=15, /* int: maximum time to wait for a lease break */
FS_DQSTATS=16, /* disc quota usage statistics and control */
FS_XFS=17, /* struct: control xfs parameters */
FS_AIO_NR=18, /* current system-wide number of aio requests */
FS_AIO_MAX_NR=19, /* system-wide maximum number of aio requests */
FS_INOTIFY=20, /* inotify submenu */
FS_OCFS2=988, /* ocfs2 */
};
/* /proc/sys/fs/quota/ */
enum {
FS_DQ_LOOKUPS = 1,
FS_DQ_DROPS = 2,
FS_DQ_READS = 3,
FS_DQ_WRITES = 4,
FS_DQ_CACHE_HITS = 5,
FS_DQ_ALLOCATED = 6,
FS_DQ_FREE = 7,
FS_DQ_SYNCS = 8,
FS_DQ_WARNINGS = 9,
};
/* CTL_DEBUG names: */
/* CTL_DEV names: */
enum {
DEV_CDROM=1,
DEV_HWMON=2,
DEV_PARPORT=3,
DEV_RAID=4,
DEV_MAC_HID=5,
DEV_SCSI=6,
DEV_IPMI=7,
};
/* /proc/sys/dev/cdrom */
enum {
DEV_CDROM_INFO=1,
DEV_CDROM_AUTOCLOSE=2,
DEV_CDROM_AUTOEJECT=3,
DEV_CDROM_DEBUG=4,
DEV_CDROM_LOCK=5,
DEV_CDROM_CHECK_MEDIA=6
};
/* /proc/sys/dev/parport */
enum {
DEV_PARPORT_DEFAULT=-3
};
/* /proc/sys/dev/raid */
enum {
DEV_RAID_SPEED_LIMIT_MIN=1,
DEV_RAID_SPEED_LIMIT_MAX=2
};
/* /proc/sys/dev/parport/default */
enum {
DEV_PARPORT_DEFAULT_TIMESLICE=1,
DEV_PARPORT_DEFAULT_SPINTIME=2
};
/* /proc/sys/dev/parport/parport n */
enum {
DEV_PARPORT_SPINTIME=1,
DEV_PARPORT_BASE_ADDR=2,
DEV_PARPORT_IRQ=3,
DEV_PARPORT_DMA=4,
DEV_PARPORT_MODES=5,
DEV_PARPORT_DEVICES=6,
DEV_PARPORT_AUTOPROBE=16
};
/* /proc/sys/dev/parport/parport n/devices/ */
enum {
DEV_PARPORT_DEVICES_ACTIVE=-3,
};
/* /proc/sys/dev/parport/parport n/devices/device n */
enum {
DEV_PARPORT_DEVICE_TIMESLICE=1,
};
/* /proc/sys/dev/mac_hid */
enum {
DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES=1,
DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES=2,
DEV_MAC_HID_MOUSE_BUTTON_EMULATION=3,
DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE=4,
DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE=5,
DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES=6
};
/* /proc/sys/dev/scsi */
enum {
DEV_SCSI_LOGGING_LEVEL=1,
};
/* /proc/sys/dev/ipmi */
enum {
DEV_IPMI_POWEROFF_POWERCYCLE=1,
};
/* /proc/sys/abi */
enum
{
ABI_DEFHANDLER_COFF=1, /* default handler for coff binaries */
ABI_DEFHANDLER_ELF=2, /* default handler for ELF binaries */
ABI_DEFHANDLER_LCALL7=3,/* default handler for procs using lcall7 */
ABI_DEFHANDLER_LIBCSO=4,/* default handler for an libc.so ELF interp */
ABI_TRACE=5, /* tracing flags */
ABI_FAKE_UTSNAME=6, /* fake target utsname information */
};
#ifdef __KERNEL__
#include <linux/list.h>
/* For the /proc/sys support */
struct ctl_table;
extern struct ctl_table_header *sysctl_head_next(struct ctl_table_header *prev);
extern void sysctl_head_finish(struct ctl_table_header *prev);
extern int sysctl_perm(struct ctl_table *table, int op);
typedef struct ctl_table ctl_table;
typedef int ctl_handler (struct ctl_table *table, int __user *name, int nlen,
void __user *oldval, size_t __user *oldlenp,
void __user *newval, size_t newlen);
typedef int proc_handler (struct ctl_table *ctl, int write, struct file * filp,
void __user *buffer, size_t *lenp, loff_t *ppos);
extern int proc_dostring(struct ctl_table *, int, struct file *,
void __user *, size_t *, loff_t *);
extern int proc_dointvec(struct ctl_table *, int, struct file *,
void __user *, size_t *, loff_t *);
extern int proc_dointvec_bset(struct ctl_table *, int, struct file *,
void __user *, size_t *, loff_t *);
extern int proc_dointvec_minmax(struct ctl_table *, int, struct file *,
void __user *, size_t *, loff_t *);
extern int proc_dointvec_jiffies(struct ctl_table *, int, struct file *,
void __user *, size_t *, loff_t *);
extern int proc_dointvec_userhz_jiffies(struct ctl_table *, int, struct file *,
void __user *, size_t *, loff_t *);
extern int proc_dointvec_ms_jiffies(struct ctl_table *, int, struct file *,
void __user *, size_t *, loff_t *);
extern int proc_doulongvec_minmax(struct ctl_table *, int, struct file *,
void __user *, size_t *, loff_t *);
extern int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int,
struct file *, void __user *, size_t *, loff_t *);
extern int do_sysctl (int __user *name, int nlen,
void __user *oldval, size_t __user *oldlenp,
void __user *newval, size_t newlen);
extern int do_sysctl_strategy (struct ctl_table *table,
int __user *name, int nlen,
void __user *oldval, size_t __user *oldlenp,
void __user *newval, size_t newlen);
extern ctl_handler sysctl_data;
extern ctl_handler sysctl_string;
extern ctl_handler sysctl_intvec;
extern ctl_handler sysctl_jiffies;
extern ctl_handler sysctl_ms_jiffies;
/*
* Register a set of sysctl names by calling register_sysctl_table
* with an initialised array of struct ctl_table's. An entry with zero
* ctl_name and NULL procname terminates the table. table->de will be
* set up by the registration and need not be initialised in advance.
*
* sysctl names can be mirrored automatically under /proc/sys. The
* procname supplied controls /proc naming.
*
* The table's mode will be honoured both for sys_sysctl(2) and
* proc-fs access.
*
* Leaf nodes in the sysctl tree will be represented by a single file
* under /proc; non-leaf nodes will be represented by directories. A
* null procname disables /proc mirroring at this node.
*
* sysctl entries with a zero ctl_name will not be available through
* the binary sysctl interface.
*
* sysctl(2) can automatically manage read and write requests through
* the sysctl table. The data and maxlen fields of the ctl_table
* struct enable minimal validation of the values being written to be
* performed, and the mode field allows minimal authentication.
*
* More sophisticated management can be enabled by the provision of a
* strategy routine with the table entry. This will be called before
* any automatic read or write of the data is performed.
*
* The strategy routine may return:
* <0: Error occurred (error is passed to user process)
* 0: OK - proceed with automatic read or write.
* >0: OK - read or write has been done by the strategy routine, so
* return immediately.
*
* There must be a proc_handler routine for any terminal nodes
* mirrored under /proc/sys (non-terminals are handled by a built-in
* directory handler). Several default handlers are available to
* cover common cases.
*/
/* A sysctl table is an array of struct ctl_table: */
struct ctl_table
{
int ctl_name; /* Binary ID */
const char *procname; /* Text ID for /proc/sys, or zero */
void *data;
int maxlen;
mode_t mode;
struct ctl_table *child;
struct ctl_table *parent; /* Automatically set */
proc_handler *proc_handler; /* Callback for text formatting */
ctl_handler *strategy; /* Callback function for all r/w */
void *extra1;
void *extra2;
};
/* struct ctl_table_header is used to maintain dynamic lists of
struct ctl_table trees. */
struct ctl_table_header
{
struct ctl_table *ctl_table;
struct list_head ctl_entry;
int used;
struct completion *unregistering;
};
struct ctl_table_header *register_sysctl_table(struct ctl_table * table);
void unregister_sysctl_table(struct ctl_table_header * table);
int sysctl_check_table(struct ctl_table *table);
#else /* __KERNEL__ */
#endif /* __KERNEL__ */
#endif /* _LINUX_SYSCTL_H */
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