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422 giacomo 1
/*
2
 * sysctl.h: General linux system control interface
3
 *
4
 * Begun 24 March 1995, Stephen Tweedie
5
 *
6
 ****************************************************************
7
 ****************************************************************
8
 **
9
 **  The values in this file are exported to user space via
10
 **  the sysctl() binary interface.  However this interface
11
 **  is unstable and deprecated and will be removed in the future.
12
 **  For a stable interface use /proc/sys.
13
 **
14
 ****************************************************************
15
 ****************************************************************
16
 */
17
 
18
#ifndef _LINUX_SYSCTL_H
19
#define _LINUX_SYSCTL_H
20
 
21
#include <linux/kernel.h>
22
#include <linux/types.h>
23
#include <linux/list.h>
24
#include <linux/compiler.h>
25
 
26
struct file;
27
 
28
#define CTL_MAXNAME 10          /* how many path components do we allow in a
29
                                   call to sysctl?   In other words, what is
30
                                   the largest acceptable value for the nlen
31
                                   member of a struct __sysctl_args to have? */
32
 
33
struct __sysctl_args {
34
        int __user *name;
35
        int nlen;
36
        void __user *oldval;
37
        size_t __user *oldlenp;
38
        void __user *newval;
39
        size_t newlen;
40
        unsigned long __unused[4];
41
};
42
 
43
/* Define sysctl names first */
44
 
45
/* Top-level names: */
46
 
47
/* For internal pattern-matching use only: */
48
#ifdef __KERNEL__
49
#define CTL_ANY         -1      /* Matches any name */
50
#define CTL_NONE        0
51
#endif
52
 
53
enum
54
{
55
        CTL_KERN=1,             /* General kernel info and control */
56
        CTL_VM=2,               /* VM management */
57
        CTL_NET=3,              /* Networking */
58
        CTL_PROC=4,             /* Process info */
59
        CTL_FS=5,               /* Filesystems */
60
        CTL_DEBUG=6,            /* Debugging */
61
        CTL_DEV=7,              /* Devices */
62
        CTL_BUS=8,              /* Busses */
63
        CTL_ABI=9,              /* Binary emulation */
64
        CTL_CPU=10              /* CPU stuff (speed scaling, etc) */
65
};
66
 
67
/* CTL_BUS names: */
68
enum
69
{
70
        CTL_BUS_ISA=1           /* ISA */
71
};
72
 
73
/* CTL_KERN names: */
74
enum
75
{
76
        KERN_OSTYPE=1,          /* string: system version */
77
        KERN_OSRELEASE=2,       /* string: system release */
78
        KERN_OSREV=3,           /* int: system revision */
79
        KERN_VERSION=4,         /* string: compile time info */
80
        KERN_SECUREMASK=5,      /* struct: maximum rights mask */
81
        KERN_PROF=6,            /* table: profiling information */
82
        KERN_NODENAME=7,
83
        KERN_DOMAINNAME=8,
84
 
85
        KERN_CAP_BSET=14,       /* int: capability bounding set */
86
        KERN_PANIC=15,          /* int: panic timeout */
87
        KERN_REALROOTDEV=16,    /* real root device to mount after initrd */
88
 
89
        KERN_SPARC_REBOOT=21,   /* reboot command on Sparc */
90
        KERN_CTLALTDEL=22,      /* int: allow ctl-alt-del to reboot */
91
        KERN_PRINTK=23,         /* struct: control printk logging parameters */
92
        KERN_NAMETRANS=24,      /* Name translation */
93
        KERN_PPC_HTABRECLAIM=25, /* turn htab reclaimation on/off on PPC */
94
        KERN_PPC_ZEROPAGED=26/* turn idle page zeroing on/off on PPC */
95
        KERN_PPC_POWERSAVE_NAP=27, /* use nap mode for power saving */
96
        KERN_MODPROBE=28,
97
        KERN_SG_BIG_BUFF=29,
98
        KERN_ACCT=30,           /* BSD process accounting parameters */
99
        KERN_PPC_L2CR=31,       /* l2cr register on PPC */
100
 
101
        KERN_RTSIGNR=32,        /* Number of rt sigs queued */
102
        KERN_RTSIGMAX=33,       /* Max queuable */
103
 
104
        KERN_SHMMAX=34,         /* long: Maximum shared memory segment */
105
        KERN_MSGMAX=35,         /* int: Maximum size of a messege */
106
        KERN_MSGMNB=36,         /* int: Maximum message queue size */
107
        KERN_MSGPOOL=37,        /* int: Maximum system message pool size */
108
        KERN_SYSRQ=38,          /* int: Sysreq enable */
109
        KERN_MAX_THREADS=39,    /* int: Maximum nr of threads in the system */
110
        KERN_RANDOM=40,         /* Random driver */
111
        KERN_SHMALL=41,         /* int: Maximum size of shared memory */
112
        KERN_MSGMNI=42,         /* int: msg queue identifiers */
113
        KERN_SEM=43,            /* struct: sysv semaphore limits */
114
        KERN_SPARC_STOP_A=44,   /* int: Sparc Stop-A enable */
115
        KERN_SHMMNI=45,         /* int: shm array identifiers */
116
        KERN_OVERFLOWUID=46,    /* int: overflow UID */
117
        KERN_OVERFLOWGID=47,    /* int: overflow GID */
118
        KERN_SHMPATH=48,        /* string: path to shm fs */
119
        KERN_HOTPLUG=49,        /* string: path to hotplug policy agent */
120
        KERN_IEEE_EMULATION_WARNINGS=50, /* int: unimplemented ieee instructions */
121
        KERN_S390_USER_DEBUG_LOGGING=51,  /* int: dumps of user faults */
122
        KERN_CORE_USES_PID=52,          /* int: use core or core.%pid */
123
        KERN_TAINTED=53,        /* int: various kernel tainted flags */
124
        KERN_CADPID=54,         /* int: PID of the process to notify on CAD */
125
        KERN_PIDMAX=55,         /* int: PID # limit */
126
        KERN_CORE_PATTERN=56,   /* string: pattern for core-file names */
127
        KERN_PANIC_ON_OOPS=57,  /* int: whether we will panic on an oops */
128
        KERN_HPPA_PWRSW=58,     /* int: hppa soft-power enable */
129
        KERN_HPPA_UNALIGNED=59, /* int: hppa unaligned-trap enable */
130
};
131
 
132
 
133
/* CTL_VM names: */
134
enum
135
{
136
        VM_UNUSED1=1,           /* was: struct: Set vm swapping control */
137
        VM_UNUSED2=2,           /* was; int: Linear or sqrt() swapout for hogs */
138
        VM_UNUSED3=3,           /* was: struct: Set free page thresholds */
139
        VM_UNUSED4=4,           /* Spare */
140
        VM_OVERCOMMIT_MEMORY=5, /* Turn off the virtual memory safety limit */
141
        VM_UNUSED5=6,           /* was: struct: Set buffer memory thresholds */
142
        VM_UNUSED7=7,           /* was: struct: Set cache memory thresholds */
143
        VM_UNUSED8=8,           /* was: struct: Control kswapd behaviour */
144
        VM_UNUSED9=9,           /* was: struct: Set page table cache parameters */
145
        VM_PAGE_CLUSTER=10,     /* int: set number of pages to swap together */
146
        VM_DIRTY_BACKGROUND=11, /* dirty_background_ratio */
147
        VM_DIRTY_RATIO=12,      /* dirty_ratio */
148
        VM_DIRTY_WB_CS=13,      /* dirty_writeback_centisecs */
149
        VM_DIRTY_EXPIRE_CS=14/* dirty_expire_centisecs */
150
        VM_NR_PDFLUSH_THREADS=15, /* nr_pdflush_threads */
151
        VM_OVERCOMMIT_RATIO=16, /* percent of RAM to allow overcommit in */
152
        VM_PAGEBUF=17,          /* struct: Control pagebuf parameters */
153
        VM_HUGETLB_PAGES=18,    /* int: Number of available Huge Pages */
154
        VM_SWAPPINESS=19,       /* Tendency to steal mapped memory */
155
        VM_LOWER_ZONE_PROTECTION=20,/* Amount of protection of lower zones */
156
        VM_MIN_FREE_KBYTES=21/* Minimum free kilobytes to maintain */
157
};
158
 
159
 
160
/* CTL_NET names: */
161
enum
162
{
163
        NET_CORE=1,
164
        NET_ETHER=2,
165
        NET_802=3,
166
        NET_UNIX=4,
167
        NET_IPV4=5,
168
        NET_IPX=6,
169
        NET_ATALK=7,
170
        NET_NETROM=8,
171
        NET_AX25=9,
172
        NET_BRIDGE=10,
173
        NET_ROSE=11,
174
        NET_IPV6=12,
175
        NET_X25=13,
176
        NET_TR=14,
177
        NET_DECNET=15,
178
        NET_ECONET=16,
179
        NET_SCTP=17,
180
};
181
 
182
/* /proc/sys/kernel/random */
183
enum
184
{
185
        RANDOM_POOLSIZE=1,
186
        RANDOM_ENTROPY_COUNT=2,
187
        RANDOM_READ_THRESH=3,
188
        RANDOM_WRITE_THRESH=4,
189
        RANDOM_BOOT_ID=5,
190
        RANDOM_UUID=6
191
};
192
 
193
/* /proc/sys/bus/isa */
194
enum
195
{
196
        BUS_ISA_MEM_BASE=1,
197
        BUS_ISA_PORT_BASE=2,
198
        BUS_ISA_PORT_SHIFT=3
199
};
200
 
201
/* /proc/sys/net/core */
202
enum
203
{
204
        NET_CORE_WMEM_MAX=1,
205
        NET_CORE_RMEM_MAX=2,
206
        NET_CORE_WMEM_DEFAULT=3,
207
        NET_CORE_RMEM_DEFAULT=4,
208
/* was  NET_CORE_DESTROY_DELAY */
209
        NET_CORE_MAX_BACKLOG=6,
210
        NET_CORE_FASTROUTE=7,
211
        NET_CORE_MSG_COST=8,
212
        NET_CORE_MSG_BURST=9,
213
        NET_CORE_OPTMEM_MAX=10,
214
        NET_CORE_HOT_LIST_LENGTH=11,
215
        NET_CORE_DIVERT_VERSION=12,
216
        NET_CORE_NO_CONG_THRESH=13,
217
        NET_CORE_NO_CONG=14,
218
        NET_CORE_LO_CONG=15,
219
        NET_CORE_MOD_CONG=16,
220
        NET_CORE_DEV_WEIGHT=17,
221
        NET_CORE_SOMAXCONN=18,
222
};
223
 
224
/* /proc/sys/net/ethernet */
225
 
226
/* /proc/sys/net/802 */
227
 
228
/* /proc/sys/net/unix */
229
 
230
enum
231
{
232
        NET_UNIX_DESTROY_DELAY=1,
233
        NET_UNIX_DELETE_DELAY=2,
234
        NET_UNIX_MAX_DGRAM_QLEN=3,
235
};
236
 
237
/* /proc/sys/net/ipv4 */
238
enum
239
{
240
        /* v2.0 compatibile variables */
241
        NET_IPV4_FORWARD=8,
242
        NET_IPV4_DYNADDR=9,
243
 
244
        NET_IPV4_CONF=16,
245
        NET_IPV4_NEIGH=17,
246
        NET_IPV4_ROUTE=18,
247
        NET_IPV4_FIB_HASH=19,
248
        NET_IPV4_NETFILTER=20,
249
 
250
        NET_IPV4_TCP_TIMESTAMPS=33,
251
        NET_IPV4_TCP_WINDOW_SCALING=34,
252
        NET_IPV4_TCP_SACK=35,
253
        NET_IPV4_TCP_RETRANS_COLLAPSE=36,
254
        NET_IPV4_DEFAULT_TTL=37,
255
        NET_IPV4_AUTOCONFIG=38,
256
        NET_IPV4_NO_PMTU_DISC=39,
257
        NET_IPV4_TCP_SYN_RETRIES=40,
258
        NET_IPV4_IPFRAG_HIGH_THRESH=41,
259
        NET_IPV4_IPFRAG_LOW_THRESH=42,
260
        NET_IPV4_IPFRAG_TIME=43,
261
        NET_IPV4_TCP_MAX_KA_PROBES=44,
262
        NET_IPV4_TCP_KEEPALIVE_TIME=45,
263
        NET_IPV4_TCP_KEEPALIVE_PROBES=46,
264
        NET_IPV4_TCP_RETRIES1=47,
265
        NET_IPV4_TCP_RETRIES2=48,
266
        NET_IPV4_TCP_FIN_TIMEOUT=49,
267
        NET_IPV4_IP_MASQ_DEBUG=50,
268
        NET_TCP_SYNCOOKIES=51,
269
        NET_TCP_STDURG=52,
270
        NET_TCP_RFC1337=53,
271
        NET_TCP_SYN_TAILDROP=54,
272
        NET_TCP_MAX_SYN_BACKLOG=55,
273
        NET_IPV4_LOCAL_PORT_RANGE=56,
274
        NET_IPV4_ICMP_ECHO_IGNORE_ALL=57,
275
        NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS=58,
276
        NET_IPV4_ICMP_SOURCEQUENCH_RATE=59,
277
        NET_IPV4_ICMP_DESTUNREACH_RATE=60,
278
        NET_IPV4_ICMP_TIMEEXCEED_RATE=61,
279
        NET_IPV4_ICMP_PARAMPROB_RATE=62,
280
        NET_IPV4_ICMP_ECHOREPLY_RATE=63,
281
        NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES=64,
282
        NET_IPV4_IGMP_MAX_MEMBERSHIPS=65,
283
        NET_TCP_TW_RECYCLE=66,
284
        NET_IPV4_ALWAYS_DEFRAG=67,
285
        NET_IPV4_TCP_KEEPALIVE_INTVL=68,
286
        NET_IPV4_INET_PEER_THRESHOLD=69,
287
        NET_IPV4_INET_PEER_MINTTL=70,
288
        NET_IPV4_INET_PEER_MAXTTL=71,
289
        NET_IPV4_INET_PEER_GC_MINTIME=72,
290
        NET_IPV4_INET_PEER_GC_MAXTIME=73,
291
        NET_TCP_ORPHAN_RETRIES=74,
292
        NET_TCP_ABORT_ON_OVERFLOW=75,
293
        NET_TCP_SYNACK_RETRIES=76,
294
        NET_TCP_MAX_ORPHANS=77,
295
        NET_TCP_MAX_TW_BUCKETS=78,
296
        NET_TCP_FACK=79,
297
        NET_TCP_REORDERING=80,
298
        NET_TCP_ECN=81,
299
        NET_TCP_DSACK=82,
300
        NET_TCP_MEM=83,
301
        NET_TCP_WMEM=84,
302
        NET_TCP_RMEM=85,
303
        NET_TCP_APP_WIN=86,
304
        NET_TCP_ADV_WIN_SCALE=87,
305
        NET_IPV4_NONLOCAL_BIND=88,
306
        NET_IPV4_ICMP_RATELIMIT=89,
307
        NET_IPV4_ICMP_RATEMASK=90,
308
        NET_TCP_TW_REUSE=91,
309
        NET_TCP_FRTO=92,
310
        NET_TCP_LOW_LATENCY=93,
311
        NET_IPV4_IPFRAG_SECRET_INTERVAL=94,
312
};
313
 
314
enum {
315
        NET_IPV4_ROUTE_FLUSH=1,
316
        NET_IPV4_ROUTE_MIN_DELAY=2,
317
        NET_IPV4_ROUTE_MAX_DELAY=3,
318
        NET_IPV4_ROUTE_GC_THRESH=4,
319
        NET_IPV4_ROUTE_MAX_SIZE=5,
320
        NET_IPV4_ROUTE_GC_MIN_INTERVAL=6,
321
        NET_IPV4_ROUTE_GC_TIMEOUT=7,
322
        NET_IPV4_ROUTE_GC_INTERVAL=8,
323
        NET_IPV4_ROUTE_REDIRECT_LOAD=9,
324
        NET_IPV4_ROUTE_REDIRECT_NUMBER=10,
325
        NET_IPV4_ROUTE_REDIRECT_SILENCE=11,
326
        NET_IPV4_ROUTE_ERROR_COST=12,
327
        NET_IPV4_ROUTE_ERROR_BURST=13,
328
        NET_IPV4_ROUTE_GC_ELASTICITY=14,
329
        NET_IPV4_ROUTE_MTU_EXPIRES=15,
330
        NET_IPV4_ROUTE_MIN_PMTU=16,
331
        NET_IPV4_ROUTE_MIN_ADVMSS=17,
332
        NET_IPV4_ROUTE_SECRET_INTERVAL=18,
333
};
334
 
335
enum
336
{
337
        NET_PROTO_CONF_ALL=-2,
338
        NET_PROTO_CONF_DEFAULT=-3
339
 
340
        /* And device ifindices ... */
341
};
342
 
343
enum
344
{
345
        NET_IPV4_CONF_FORWARDING=1,
346
        NET_IPV4_CONF_MC_FORWARDING=2,
347
        NET_IPV4_CONF_PROXY_ARP=3,
348
        NET_IPV4_CONF_ACCEPT_REDIRECTS=4,
349
        NET_IPV4_CONF_SECURE_REDIRECTS=5,
350
        NET_IPV4_CONF_SEND_REDIRECTS=6,
351
        NET_IPV4_CONF_SHARED_MEDIA=7,
352
        NET_IPV4_CONF_RP_FILTER=8,
353
        NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE=9,
354
        NET_IPV4_CONF_BOOTP_RELAY=10,
355
        NET_IPV4_CONF_LOG_MARTIANS=11,
356
        NET_IPV4_CONF_TAG=12,
357
        NET_IPV4_CONF_ARPFILTER=13,
358
        NET_IPV4_CONF_MEDIUM_ID=14,
359
        NET_IPV4_CONF_NOXFRM=15,
360
        NET_IPV4_CONF_NOPOLICY=16,
361
};
362
 
363
/* /proc/sys/net/ipv4/netfilter */
364
enum
365
{
366
        NET_IPV4_NF_CONNTRACK_MAX=1,
367
        NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2,
368
        NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3,
369
        NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4,
370
        NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5,
371
        NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6,
372
        NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7,
373
        NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8,
374
        NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9,
375
        NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT=10,
376
        NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11,
377
        NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT=12,
378
        NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT=13,
379
};
380
 
381
/* /proc/sys/net/ipv6 */
382
enum {
383
        NET_IPV6_CONF=16,
384
        NET_IPV6_NEIGH=17,
385
        NET_IPV6_ROUTE=18,
386
        NET_IPV6_ICMP=19,
387
        NET_IPV6_BINDV6ONLY=20,
388
        NET_IPV6_IP6FRAG_HIGH_THRESH=21,
389
        NET_IPV6_IP6FRAG_LOW_THRESH=22,
390
        NET_IPV6_IP6FRAG_TIME=23,
391
        NET_IPV6_IP6FRAG_SECRET_INTERVAL=24
392
};
393
 
394
enum {
395
        NET_IPV6_ROUTE_FLUSH=1,
396
        NET_IPV6_ROUTE_GC_THRESH=2,
397
        NET_IPV6_ROUTE_MAX_SIZE=3,
398
        NET_IPV6_ROUTE_GC_MIN_INTERVAL=4,
399
        NET_IPV6_ROUTE_GC_TIMEOUT=5,
400
        NET_IPV6_ROUTE_GC_INTERVAL=6,
401
        NET_IPV6_ROUTE_GC_ELASTICITY=7,
402
        NET_IPV6_ROUTE_MTU_EXPIRES=8,
403
        NET_IPV6_ROUTE_MIN_ADVMSS=9
404
};
405
 
406
enum {
407
        NET_IPV6_FORWARDING=1,
408
        NET_IPV6_HOP_LIMIT=2,
409
        NET_IPV6_MTU=3,
410
        NET_IPV6_ACCEPT_RA=4,
411
        NET_IPV6_ACCEPT_REDIRECTS=5,
412
        NET_IPV6_AUTOCONF=6,
413
        NET_IPV6_DAD_TRANSMITS=7,
414
        NET_IPV6_RTR_SOLICITS=8,
415
        NET_IPV6_RTR_SOLICIT_INTERVAL=9,
416
        NET_IPV6_RTR_SOLICIT_DELAY=10,
417
        NET_IPV6_USE_TEMPADDR=11,
418
        NET_IPV6_TEMP_VALID_LFT=12,
419
        NET_IPV6_TEMP_PREFERED_LFT=13,
420
        NET_IPV6_REGEN_MAX_RETRY=14,
421
        NET_IPV6_MAX_DESYNC_FACTOR=15
422
};
423
 
424
/* /proc/sys/net/ipv6/icmp */
425
enum {
426
        NET_IPV6_ICMP_RATELIMIT=1
427
};
428
 
429
/* /proc/sys/net/<protocol>/neigh/<dev> */
430
enum {
431
        NET_NEIGH_MCAST_SOLICIT=1,
432
        NET_NEIGH_UCAST_SOLICIT=2,
433
        NET_NEIGH_APP_SOLICIT=3,
434
        NET_NEIGH_RETRANS_TIME=4,
435
        NET_NEIGH_REACHABLE_TIME=5,
436
        NET_NEIGH_DELAY_PROBE_TIME=6,
437
        NET_NEIGH_GC_STALE_TIME=7,
438
        NET_NEIGH_UNRES_QLEN=8,
439
        NET_NEIGH_PROXY_QLEN=9,
440
        NET_NEIGH_ANYCAST_DELAY=10,
441
        NET_NEIGH_PROXY_DELAY=11,
442
        NET_NEIGH_LOCKTIME=12,
443
        NET_NEIGH_GC_INTERVAL=13,
444
        NET_NEIGH_GC_THRESH1=14,
445
        NET_NEIGH_GC_THRESH2=15,
446
        NET_NEIGH_GC_THRESH3=16
447
};
448
 
449
/* /proc/sys/net/ipx */
450
enum {
451
        NET_IPX_PPROP_BROADCASTING=1,
452
        NET_IPX_FORWARDING=2
453
};
454
 
455
 
456
/* /proc/sys/net/appletalk */
457
enum {
458
        NET_ATALK_AARP_EXPIRY_TIME=1,
459
        NET_ATALK_AARP_TICK_TIME=2,
460
        NET_ATALK_AARP_RETRANSMIT_LIMIT=3,
461
        NET_ATALK_AARP_RESOLVE_TIME=4
462
};
463
 
464
 
465
/* /proc/sys/net/netrom */
466
enum {
467
        NET_NETROM_DEFAULT_PATH_QUALITY=1,
468
        NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER=2,
469
        NET_NETROM_NETWORK_TTL_INITIALISER=3,
470
        NET_NETROM_TRANSPORT_TIMEOUT=4,
471
        NET_NETROM_TRANSPORT_MAXIMUM_TRIES=5,
472
        NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY=6,
473
        NET_NETROM_TRANSPORT_BUSY_DELAY=7,
474
        NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE=8,
475
        NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT=9,
476
        NET_NETROM_ROUTING_CONTROL=10,
477
        NET_NETROM_LINK_FAILS_COUNT=11
478
};
479
 
480
/* /proc/sys/net/ax25 */
481
enum {
482
        NET_AX25_IP_DEFAULT_MODE=1,
483
        NET_AX25_DEFAULT_MODE=2,
484
        NET_AX25_BACKOFF_TYPE=3,
485
        NET_AX25_CONNECT_MODE=4,
486
        NET_AX25_STANDARD_WINDOW=5,
487
        NET_AX25_EXTENDED_WINDOW=6,
488
        NET_AX25_T1_TIMEOUT=7,
489
        NET_AX25_T2_TIMEOUT=8,
490
        NET_AX25_T3_TIMEOUT=9,
491
        NET_AX25_IDLE_TIMEOUT=10,
492
        NET_AX25_N2=11,
493
        NET_AX25_PACLEN=12,
494
        NET_AX25_PROTOCOL=13,
495
        NET_AX25_DAMA_SLAVE_TIMEOUT=14
496
};
497
 
498
/* /proc/sys/net/rose */
499
enum {
500
        NET_ROSE_RESTART_REQUEST_TIMEOUT=1,
501
        NET_ROSE_CALL_REQUEST_TIMEOUT=2,
502
        NET_ROSE_RESET_REQUEST_TIMEOUT=3,
503
        NET_ROSE_CLEAR_REQUEST_TIMEOUT=4,
504
        NET_ROSE_ACK_HOLD_BACK_TIMEOUT=5,
505
        NET_ROSE_ROUTING_CONTROL=6,
506
        NET_ROSE_LINK_FAIL_TIMEOUT=7,
507
        NET_ROSE_MAX_VCS=8,
508
        NET_ROSE_WINDOW_SIZE=9,
509
        NET_ROSE_NO_ACTIVITY_TIMEOUT=10
510
};
511
 
512
/* /proc/sys/net/x25 */
513
enum {
514
        NET_X25_RESTART_REQUEST_TIMEOUT=1,
515
        NET_X25_CALL_REQUEST_TIMEOUT=2,
516
        NET_X25_RESET_REQUEST_TIMEOUT=3,
517
        NET_X25_CLEAR_REQUEST_TIMEOUT=4,
518
        NET_X25_ACK_HOLD_BACK_TIMEOUT=5
519
};
520
 
521
/* /proc/sys/net/token-ring */
522
enum
523
{
524
        NET_TR_RIF_TIMEOUT=1
525
};
526
 
527
/* /proc/sys/net/decnet/ */
528
enum {
529
        NET_DECNET_NODE_TYPE = 1,
530
        NET_DECNET_NODE_ADDRESS = 2,
531
        NET_DECNET_NODE_NAME = 3,
532
        NET_DECNET_DEFAULT_DEVICE = 4,
533
        NET_DECNET_TIME_WAIT = 5,
534
        NET_DECNET_DN_COUNT = 6,
535
        NET_DECNET_DI_COUNT = 7,
536
        NET_DECNET_DR_COUNT = 8,
537
        NET_DECNET_DST_GC_INTERVAL = 9,
538
        NET_DECNET_CONF = 10,
539
        NET_DECNET_NO_FC_MAX_CWND = 11,
540
        NET_DECNET_DEBUG_LEVEL = 255
541
};
542
 
543
/* /proc/sys/net/decnet/conf/<dev> */
544
enum {
545
        NET_DECNET_CONF_LOOPBACK = -2,
546
        NET_DECNET_CONF_DDCMP = -3,
547
        NET_DECNET_CONF_PPP = -4,
548
        NET_DECNET_CONF_X25 = -5,
549
        NET_DECNET_CONF_GRE = -6,
550
        NET_DECNET_CONF_ETHER = -7
551
 
552
        /* ... and ifindex of devices */
553
};
554
 
555
/* /proc/sys/net/decnet/conf/<dev>/ */
556
enum {
557
        NET_DECNET_CONF_DEV_PRIORITY = 1,
558
        NET_DECNET_CONF_DEV_T1 = 2,
559
        NET_DECNET_CONF_DEV_T2 = 3,
560
        NET_DECNET_CONF_DEV_T3 = 4,
561
        NET_DECNET_CONF_DEV_FORWARDING = 5,
562
        NET_DECNET_CONF_DEV_BLKSIZE = 6,
563
        NET_DECNET_CONF_DEV_STATE = 7
564
};
565
 
566
/* /proc/sys/net/sctp */
567
enum {
568
        NET_SCTP_RTO_INITIAL = 1,
569
        NET_SCTP_RTO_MIN     = 2,
570
        NET_SCTP_RTO_MAX     = 3,
571
        NET_SCTP_RTO_ALPHA   = 4,
572
        NET_SCTP_RTO_BETA    = 5,
573
        NET_SCTP_VALID_COOKIE_LIFE       =  6,
574
        NET_SCTP_ASSOCIATION_MAX_RETRANS =  7,
575
        NET_SCTP_PATH_MAX_RETRANS        =  8,
576
        NET_SCTP_MAX_INIT_RETRANSMITS    =  9,
577
        NET_SCTP_HB_INTERVAL             = 10,
578
        NET_SCTP_PRESERVE_ENABLE         = 11,
579
        NET_SCTP_MAX_BURST               = 12,
580
};
581
 
582
/* CTL_PROC names: */
583
 
584
/* CTL_FS names: */
585
enum
586
{
587
        FS_NRINODE=1,   /* int:current number of allocated inodes */
588
        FS_STATINODE=2,
589
        FS_MAXINODE=3/* int:maximum number of inodes that can be allocated */
590
        FS_NRDQUOT=4,   /* int:current number of allocated dquots */
591
        FS_MAXDQUOT=5/* int:maximum number of dquots that can be allocated */
592
        FS_NRFILE=6,    /* int:current number of allocated filedescriptors */
593
        FS_MAXFILE=7,   /* int:maximum number of filedescriptors that can be allocated */
594
        FS_DENTRY=8,
595
        FS_NRSUPER=9,   /* int:current number of allocated super_blocks */
596
        FS_MAXSUPER=10, /* int:maximum number of super_blocks that can be allocated */
597
        FS_OVERFLOWUID=11,      /* int: overflow UID */
598
        FS_OVERFLOWGID=12,      /* int: overflow GID */
599
        FS_LEASES=13,   /* int: leases enabled */
600
        FS_DIR_NOTIFY=14,       /* int: directory notification enabled */
601
        FS_LEASE_TIME=15,       /* int: maximum time to wait for a lease break */
602
        FS_DQSTATS=16/* disc quota usage statistics */
603
        FS_XFS=17,      /* struct: control xfs parameters */
604
};
605
 
606
/* /proc/sys/fs/quota/ */
607
enum {
608
        FS_DQ_LOOKUPS = 1,
609
        FS_DQ_DROPS = 2,
610
        FS_DQ_READS = 3,
611
        FS_DQ_WRITES = 4,
612
        FS_DQ_CACHE_HITS = 5,
613
        FS_DQ_ALLOCATED = 6,
614
        FS_DQ_FREE = 7,
615
        FS_DQ_SYNCS = 8,
616
};
617
 
618
/* CTL_DEBUG names: */
619
 
620
/* CTL_DEV names: */
621
enum {
622
        DEV_CDROM=1,
623
        DEV_HWMON=2,
624
        DEV_PARPORT=3,
625
        DEV_RAID=4,
626
        DEV_MAC_HID=5,
627
        DEV_SCSI=6,
628
};
629
 
630
/* /proc/sys/dev/cdrom */
631
enum {
632
        DEV_CDROM_INFO=1,
633
        DEV_CDROM_AUTOCLOSE=2,
634
        DEV_CDROM_AUTOEJECT=3,
635
        DEV_CDROM_DEBUG=4,
636
        DEV_CDROM_LOCK=5,
637
        DEV_CDROM_CHECK_MEDIA=6
638
};
639
 
640
/* /proc/sys/dev/parport */
641
enum {
642
        DEV_PARPORT_DEFAULT=-3
643
};
644
 
645
/* /proc/sys/dev/raid */
646
enum {
647
        DEV_RAID_SPEED_LIMIT_MIN=1,
648
        DEV_RAID_SPEED_LIMIT_MAX=2
649
};
650
 
651
/* /proc/sys/dev/parport/default */
652
enum {
653
        DEV_PARPORT_DEFAULT_TIMESLICE=1,
654
        DEV_PARPORT_DEFAULT_SPINTIME=2
655
};
656
 
657
/* /proc/sys/dev/parport/parport n */
658
enum {
659
        DEV_PARPORT_SPINTIME=1,
660
        DEV_PARPORT_BASE_ADDR=2,
661
        DEV_PARPORT_IRQ=3,
662
        DEV_PARPORT_DMA=4,
663
        DEV_PARPORT_MODES=5,
664
        DEV_PARPORT_DEVICES=6,
665
        DEV_PARPORT_AUTOPROBE=16
666
};
667
 
668
/* /proc/sys/dev/parport/parport n/devices/ */
669
enum {
670
        DEV_PARPORT_DEVICES_ACTIVE=-3,
671
};
672
 
673
/* /proc/sys/dev/parport/parport n/devices/device n */
674
enum {
675
        DEV_PARPORT_DEVICE_TIMESLICE=1,
676
};
677
 
678
/* /proc/sys/dev/mac_hid */
679
enum {
680
        DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES=1,
681
        DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES=2,
682
        DEV_MAC_HID_MOUSE_BUTTON_EMULATION=3,
683
        DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE=4,
684
        DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE=5,
685
        DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES=6
686
};
687
 
688
/* /proc/sys/dev/scsi */
689
enum {
690
        DEV_SCSI_LOGGING_LEVEL=1,
691
};
692
 
693
/* /proc/sys/abi */
694
enum
695
{
696
        ABI_DEFHANDLER_COFF=1/* default handler for coff binaries */
697
        ABI_DEFHANDLER_ELF=2,   /* default handler for ELF binaries */
698
        ABI_DEFHANDLER_LCALL7=3,/* default handler for procs using lcall7 */
699
        ABI_DEFHANDLER_LIBCSO=4,/* default handler for an libc.so ELF interp */
700
        ABI_TRACE=5,            /* tracing flags */
701
        ABI_FAKE_UTSNAME=6,     /* fake target utsname information */
702
};
703
 
704
#ifdef __KERNEL__
705
 
706
extern asmlinkage long sys_sysctl(struct __sysctl_args __user *);
707
extern void sysctl_init(void);
708
 
709
typedef struct ctl_table ctl_table;
710
 
711
typedef int ctl_handler (ctl_table *table, int __user *name, int nlen,
712
                         void __user *oldval, size_t __user *oldlenp,
713
                         void __user *newval, size_t newlen,
714
                         void **context);
715
 
716
typedef int proc_handler (ctl_table *ctl, int write, struct file * filp,
717
                          void __user *buffer, size_t *lenp);
718
 
719
extern int proc_dostring(ctl_table *, int, struct file *,
720
                         void __user *, size_t *);
721
extern int proc_dointvec(ctl_table *, int, struct file *,
722
                         void __user *, size_t *);
723
extern int proc_dointvec_bset(ctl_table *, int, struct file *,
724
                              void __user *, size_t *);
725
extern int proc_dointvec_minmax(ctl_table *, int, struct file *,
726
                                void __user *, size_t *);
727
extern int proc_dointvec_jiffies(ctl_table *, int, struct file *,
728
                                 void __user *, size_t *);
729
extern int proc_doulongvec_minmax(ctl_table *, int, struct file *,
730
                                  void __user *, size_t *);
731
extern int proc_doulongvec_ms_jiffies_minmax(ctl_table *table, int,
732
                                      struct file *, void __user *, size_t *);
733
 
734
extern int do_sysctl (int __user *name, int nlen,
735
                      void __user *oldval, size_t __user *oldlenp,
736
                      void __user *newval, size_t newlen);
737
 
738
extern int do_sysctl_strategy (ctl_table *table,
739
                               int __user *name, int nlen,
740
                               void __user *oldval, size_t __user *oldlenp,
741
                               void __user *newval, size_t newlen, void ** context);
742
 
743
extern ctl_handler sysctl_string;
744
extern ctl_handler sysctl_intvec;
745
extern ctl_handler sysctl_jiffies;
746
 
747
 
748
/*
749
 * Register a set of sysctl names by calling register_sysctl_table
750
 * with an initialised array of ctl_table's.  An entry with zero
751
 * ctl_name terminates the table.  table->de will be set up by the
752
 * registration and need not be initialised in advance.
753
 *
754
 * sysctl names can be mirrored automatically under /proc/sys.  The
755
 * procname supplied controls /proc naming.
756
 *
757
 * The table's mode will be honoured both for sys_sysctl(2) and
758
 * proc-fs access.
759
 *
760
 * Leaf nodes in the sysctl tree will be represented by a single file
761
 * under /proc; non-leaf nodes will be represented by directories.  A
762
 * null procname disables /proc mirroring at this node.
763
 *
764
 * sysctl(2) can automatically manage read and write requests through
765
 * the sysctl table.  The data and maxlen fields of the ctl_table
766
 * struct enable minimal validation of the values being written to be
767
 * performed, and the mode field allows minimal authentication.
768
 *
769
 * More sophisticated management can be enabled by the provision of a
770
 * strategy routine with the table entry.  This will be called before
771
 * any automatic read or write of the data is performed.
772
 *
773
 * The strategy routine may return:
774
 * <0: Error occurred (error is passed to user process)
775
 * 0:  OK - proceed with automatic read or write.
776
 * >0: OK - read or write has been done by the strategy routine, so
777
 *     return immediately.
778
 *
779
 * There must be a proc_handler routine for any terminal nodes
780
 * mirrored under /proc/sys (non-terminals are handled by a built-in
781
 * directory handler).  Several default handlers are available to
782
 * cover common cases.
783
 */
784
 
785
/* A sysctl table is an array of struct ctl_table: */
786
struct ctl_table
787
{
788
        int ctl_name;                   /* Binary ID */
789
        const char *procname;           /* Text ID for /proc/sys, or zero */
790
        void *data;
791
        int maxlen;
792
        mode_t mode;
793
        ctl_table *child;
794
        proc_handler *proc_handler;     /* Callback for text formatting */
795
        ctl_handler *strategy;          /* Callback function for all r/w */
796
        struct proc_dir_entry *de;      /* /proc control block */
797
        void *extra1;
798
        void *extra2;
799
};
800
 
801
/* struct ctl_table_header is used to maintain dynamic lists of
802
   ctl_table trees. */
803
struct ctl_table_header
804
{
805
        ctl_table *ctl_table;
806
        struct list_head ctl_entry;
807
};
808
 
809
struct ctl_table_header * register_sysctl_table(ctl_table * table,
810
                                                int insert_at_head);
811
void unregister_sysctl_table(struct ctl_table_header * table);
812
 
813
#else /* __KERNEL__ */
814
 
815
#endif /* __KERNEL__ */
816
 
817
#endif /* _LINUX_SYSCTL_H */