sys/sys/sysctl.h

   1 /*
   2  * Copyright (c) 1989, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Mike Karels at Berkeley Software Design, Inc.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  *      @(#)sysctl.h    8.1 (Berkeley) 6/2/93
  37  * $FreeBSD: src/sys/sys/sysctl.h,v 1.81.2.10 2003/05/01 22:48:09 trhodes Exp $
  38  * $DragonFly: src/sys/sys/sysctl.h,v 1.29 2008/09/30 12:20:29 hasso Exp $
  39  */
  40
  41 #ifndef _SYS_SYSCTL_H_
  42 #define _SYS_SYSCTL_H_
  43
  44 #ifndef _SYS_TYPES_H_
  45 #include <sys/types.h>
  46 #endif
  47 #ifndef _SYS__POSIX_H_
  48 #include <sys/_posix.h>
  49 #endif
  50 #ifndef _SYS_QUEUE_H_
  51 #include <sys/queue.h>
  52 #endif
  53
  54 /*
  55  * Definitions for sysctl call.  The sysctl call uses a hierarchical name
  56  * for objects that can be examined or modified.  The name is expressed as
  57  * a sequence of integers.  Like a file path name, the meaning of each
  58  * component depends on its place in the hierarchy.  The top-level and kern
  59  * identifiers are defined here, and other identifiers are defined in the
  60  * respective subsystem header files.
  61  */
  62
  63 #define CTL_MAXNAME     12      /* largest number of components supported */
  64
  65 /*
  66  * Each subsystem defined by sysctl defines a list of variables
  67  * for that subsystem. Each name is either a node with further
  68  * levels defined below it, or it is a leaf of some particular
  69  * type given below. Each sysctl level defines a set of name/type
  70  * pairs to be used by sysctl(1) in manipulating the subsystem.
  71  */
  72 struct ctlname {
  73         char    *ctl_name;      /* subsystem name */
  74         int     ctl_type;       /* type of name */
  75 };
  76
  77 #define CTLTYPE         0xf     /* Mask for the type */
  78 #define CTLTYPE_NODE    1       /* name is a node */
  79 #define CTLTYPE_INT     2       /* name describes an integer */
  80 #define CTLTYPE_STRING  3       /* name describes a string */
  81 #define CTLTYPE_QUAD    4       /* name describes a 64-bit number */
  82 #define CTLTYPE_OPAQUE  5       /* name describes a structure */
  83 #define CTLTYPE_STRUCT  CTLTYPE_OPAQUE  /* name describes a structure */
  84 #define CTLTYPE_UINT    6       /* name describes an unsigned integer */
  85 #define CTLTYPE_LONG    7       /* name describes a long */
  86 #define CTLTYPE_ULONG   8       /* name describes an unsigned long */
  87 #define CTLTYPE_UQUAD   9       /* name describes an unsigned 64-bit number */
  88
  89 #define CTLFLAG_RD      0x80000000      /* Allow reads of variable */
  90 #define CTLFLAG_WR      0x40000000      /* Allow writes to the variable */
  91 #define CTLFLAG_RW      (CTLFLAG_RD|CTLFLAG_WR)
  92 #define CTLFLAG_ANYBODY 0x10000000      /* All users can set this var */
  93 #define CTLFLAG_SECURE  0x08000000      /* Permit set only if securelevel<=0 */
  94 #define CTLFLAG_PRISON  0x04000000      /* Prisoned roots can fiddle */
  95 #define CTLFLAG_DYN     0x02000000      /* Dynamic oid - can be freed */
  96
  97 /*
  98  * USE THIS instead of a hardwired number from the categories below
  99  * to get dynamically assigned sysctl entries using the linker-set
 100  * technology. This is the way nearly all new sysctl variables should
 101  * be implemented.
 102  * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, "");
 103  */
 104 #define OID_AUTO        (-1)
 105
 106 #ifdef _KERNEL
 107
 108 #include <sys/kernel.h>                 /* for DATA_SET */
 109
 110 #define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, int arg2, \
 111         struct sysctl_req *req
 112
 113 /*
 114  * This describes the access space for a sysctl request.  This is needed
 115  * so that we can use the interface from the kernel or from user-space.
 116  */
 117 struct sysctl_req {
 118         struct thread   *td;
 119         int             unused01;       /* was lock */
 120         void            *oldptr;
 121         size_t          oldlen;
 122         size_t          oldidx;
 123         int             (*oldfunc)(struct sysctl_req *, const void *, size_t);
 124         void            *newptr;
 125         size_t          newlen;
 126         size_t          newidx;
 127         int             (*newfunc)(struct sysctl_req *, void *, size_t);
 128 };
 129
 130 SLIST_HEAD(sysctl_oid_list, sysctl_oid);
 131
 132 /*
 133  * This describes one "oid" in the MIB tree.  Potentially more nodes can
 134  * be hidden behind it, expanded by the handler.
 135  */
 136 struct sysctl_oid {
 137         struct sysctl_oid_list *oid_parent;
 138         SLIST_ENTRY(sysctl_oid) oid_link;
 139         int             oid_number;
 140         int             oid_kind;
 141         void            *oid_arg1;
 142         int             oid_arg2;
 143         const char      *oid_name;
 144         int             (*oid_handler)(SYSCTL_HANDLER_ARGS);
 145         const char      *oid_fmt;
 146         int             oid_refcnt;
 147         const char      *oid_descr;
 148 };
 149
 150 #define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l)
 151 #define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l)
 152
 153 int sysctl_handle_int(SYSCTL_HANDLER_ARGS);
 154 int sysctl_handle_long(SYSCTL_HANDLER_ARGS);
 155 int sysctl_handle_quad(SYSCTL_HANDLER_ARGS);
 156 int sysctl_handle_intptr(SYSCTL_HANDLER_ARGS);
 157 int sysctl_handle_string(SYSCTL_HANDLER_ARGS);
 158 int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS);
 159
 160 /*
 161  * These functions are used to add/remove an oid from the mib.
 162  */
 163 void sysctl_register_oid(struct sysctl_oid *oidp);
 164 void sysctl_unregister_oid(struct sysctl_oid *oidp);
 165
 166 /* Declare a static oid to allow child oids to be added to it. */
 167 #define SYSCTL_DECL(name)                                       \
 168         extern struct sysctl_oid_list sysctl_##name##_children
 169
 170 /* Hide these in macros */
 171 #define SYSCTL_SET_CHILDREN(oid_ptr, children) do {                     \
 172         (oid_ptr)->oid_arg1 = (children);                               \
 173 } while(0)
 174 #define SYSCTL_CHILDREN(oid_ptr) (struct sysctl_oid_list *) \
 175         (oid_ptr)->oid_arg1
 176 #define SYSCTL_STATIC_CHILDREN(oid_name) \
 177         (&sysctl_##oid_name##_children)
 178
 179 /* === Structs and macros related to context handling === */
 180
 181 /* All dynamically created sysctls can be tracked in a context list. */
 182 struct sysctl_ctx_entry {
 183         struct sysctl_oid *entry;
 184         TAILQ_ENTRY(sysctl_ctx_entry) link;
 185 };
 186
 187 TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry);
 188
 189 #define SYSCTL_NODE_CHILDREN(parent, name) \
 190         sysctl_##parent##_##name##_children
 191
 192 /* This constructs a "raw" MIB oid. */
 193 #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
 194         static struct sysctl_oid sysctl__##parent##_##name = {           \
 195                 &sysctl_##parent##_children, { 0 },                      \
 196                 nbr, kind, a1, a2, #name, handler, fmt, 0, descr };              \
 197         DATA_SET(sysctl_set, sysctl__##parent##_##name);
 198
 199 #define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
 200         sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr);
 201
 202 /* This constructs a node from which other oids can hang. */
 203 #define SYSCTL_NODE(parent, nbr, name, access, handler, descr)              \
 204         struct sysctl_oid_list sysctl_##parent##_##name##_children;         \
 205         SYSCTL_OID(parent, nbr, name, CTLTYPE_NODE|access,                  \
 206                    (void*)&sysctl_##parent##_##name##_children, 0, handler, \
 207                    "N", descr);
 208
 209 #define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr)     \
 210         sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|access,         \
 211         0, 0, handler, "N", descr)
 212
 213 /* Oid for a string.  len can be 0 to indicate '\0' termination. */
 214 #define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \
 215         SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|access, \
 216                 arg, len, sysctl_handle_string, "A", descr)
 217
 218 #define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr)  \
 219         sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|access,       \
 220         arg, len, sysctl_handle_string, "A", descr)
 221
 222 /* Oid for an int.  If ptr is NULL, val is returned. */
 223 #define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \
 224         SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|access, \
 225                 ptr, val, sysctl_handle_int, "I", descr)
 226
 227 #define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr)     \
 228         sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_INT|access,          \
 229         ptr, val, sysctl_handle_int, "I", descr)
 230
 231 /* Oid for a quad.  If ptr is NULL, val is returned. */
 232 #define SYSCTL_QUAD(parent, nbr, name, access, ptr, val, descr) \
 233         SYSCTL_OID(parent, nbr, name, CTLTYPE_QUAD|access, \
 234                 ptr, val, sysctl_handle_quad, "Q", descr)
 235
 236 #define SYSCTL_ADD_QUAD(ctx, parent, nbr, name, access, ptr, val, descr)    \
 237         sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_QUAD|access,         \
 238         ptr, val, sysctl_handle_quad, "Q", descr)
 239
 240 /* Oid for an unsigned quad.  If ptr is NULL, val is returned. */
 241 #define SYSCTL_UQUAD(parent, nbr, name, access, ptr, val, descr)            \
 242         SYSCTL_OID(parent, nbr, name, CTLTYPE_UQUAD|access,                 \
 243                 ptr, val, sysctl_handle_quad, "QU", descr)
 244
 245 #define SYSCTL_ADD_UQUAD(ctx, parent, nbr, name, access, ptr, val, descr)   \
 246         sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_UQUAD|access,        \
 247         ptr, val, sysctl_handle_quad, "QU", descr)
 248
 249 /* Oid for an unsigned int.  If ptr is NULL, val is returned. */
 250 #define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \
 251         SYSCTL_OID(parent, nbr, name, CTLTYPE_UINT|access, \
 252                 ptr, val, sysctl_handle_int, "IU", descr)
 253
 254 #define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr)    \
 255         sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_UINT|access,         \
 256         ptr, val, sysctl_handle_int, "IU", descr)
 257
 258 /* Oid for a long.  The pointer must be non NULL. */
 259 #define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \
 260         SYSCTL_OID(parent, nbr, name, CTLTYPE_LONG|access, \
 261                 ptr, val, sysctl_handle_long, "L", descr)
 262
 263 #define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr)         \
 264         sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_LONG|access,         \
 265         ptr, 0, sysctl_handle_long, "L", descr)
 266
 267 /* Oid for a long.  The pointer must be non NULL. */
 268 #define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \
 269         SYSCTL_OID(parent, nbr, name, CTLTYPE_ULONG|access, \
 270                 ptr, val, sysctl_handle_long, "LU", descr)
 271
 272 #define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr)        \
 273         sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_ULONG|access,        \
 274         ptr, 0, sysctl_handle_long, "LU", descr)
 275
 276 /* Oid for an opaque object.  Specified by a pointer and a length. */
 277 #define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \
 278         SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|access, \
 279                 ptr, len, sysctl_handle_opaque, fmt, descr)
 280
 281 #define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr)\
 282         sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|access,       \
 283         ptr, len, sysctl_handle_opaque, fmt, descr)
 284
 285 /* Oid for a struct.  Specified by a pointer and a type. */
 286 #define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \
 287         SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|access, \
 288                 ptr, sizeof(struct type), sysctl_handle_opaque, \
 289                 "S," #type, descr)
 290
 291 #define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \
 292         sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|access,       \
 293         ptr, sizeof(struct type), sysctl_handle_opaque, "S," #type, descr)
 294
 295 /* Oid for a procedure.  Specified by a pointer and an arg. */
 296 #define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
 297         SYSCTL_OID(parent, nbr, name, access, \
 298                 ptr, arg, handler, fmt, descr)
 299
 300 #define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
 301         sysctl_add_oid(ctx, parent, nbr, name, access,                      \
 302         ptr, arg, handler, fmt, descr)
 303
 304 #endif /* _KERNEL */
 305
 306 /*
 307  * Top-level identifiers
 308  */
 309 #define CTL_UNSPEC      0               /* unused */
 310 #define CTL_KERN        1               /* "high kernel": proc, limits */
 311 #define CTL_VM          2               /* virtual memory */
 312 #define CTL_VFS         3               /* file system, mount type is next */
 313 #define CTL_NET         4               /* network, see socket.h */
 314 #define CTL_DEBUG       5               /* debugging parameters */
 315 #define CTL_HW          6               /* generic cpu/io */
 316 #define CTL_MACHDEP     7               /* machine dependent */
 317 #define CTL_USER        8               /* user-level */
 318 #define CTL_P1003_1B    9               /* POSIX 1003.1B */
 319 #define CTL_LWKT        10              /* light weight kernel threads */
 320 #define CTL_MAXID       11              /* number of valid top-level ids */
 321
 322 #define CTL_NAMES { \
 323         { 0, 0 }, \
 324         { "kern", CTLTYPE_NODE }, \
 325         { "vm", CTLTYPE_NODE }, \
 326         { "vfs", CTLTYPE_NODE }, \
 327         { "net", CTLTYPE_NODE }, \
 328         { "debug", CTLTYPE_NODE }, \
 329         { "hw", CTLTYPE_NODE }, \
 330         { "machdep", CTLTYPE_NODE }, \
 331         { "user", CTLTYPE_NODE }, \
 332         { "p1003_1b", CTLTYPE_NODE }, \
 333         { "lwkt", CTLTYPE_NODE }, \
 334 }
 335
 336 /*
 337  * CTL_KERN identifiers
 338  */
 339 #define KERN_OSTYPE              1      /* string: system version */
 340 #define KERN_OSRELEASE           2      /* string: system release */
 341 #define KERN_OSREV               3      /* int: system revision */
 342 #define KERN_VERSION             4      /* string: compile time info */
 343 #define KERN_MAXVNODES           5      /* int: max vnodes */
 344 #define KERN_MAXPROC             6      /* int: max processes */
 345 #define KERN_MAXFILES            7      /* int: max open files */
 346 #define KERN_ARGMAX              8      /* int: max arguments to exec */
 347 #define KERN_SECURELVL           9      /* int: system security level */
 348 #define KERN_HOSTNAME           10      /* string: hostname */
 349 #define KERN_HOSTID             11      /* int: host identifier */
 350 #define KERN_CLOCKRATE          12      /* struct: struct clockrate */
 351 #define KERN_VNODE              13      /* struct: vnode structures */
 352 #define KERN_PROC               14      /* struct: process entries */
 353 #define KERN_FILE               15      /* struct: file entries */
 354 #define KERN_PROF               16      /* node: kernel profiling info */
 355 #define KERN_POSIX1             17      /* int: POSIX.1 version */
 356 #define KERN_NGROUPS            18      /* int: # of supplemental group ids */
 357 #define KERN_JOB_CONTROL        19      /* int: is job control available */
 358 #define KERN_SAVED_IDS          20      /* int: saved set-user/group-ID */
 359 #define KERN_BOOTTIME           21      /* struct: time kernel was booted */
 360 #define KERN_NISDOMAINNAME      22      /* string: YP domain name */
 361 #define KERN_UPDATEINTERVAL     23      /* int: update process sleep time */
 362 #define KERN_OSRELDATE          24      /* int: OS release date */
 363 #define KERN_NTP_PLL            25      /* node: NTP PLL control */
 364 #define KERN_BOOTFILE           26      /* string: name of booted kernel */
 365 #define KERN_MAXFILESPERPROC    27      /* int: max open files per proc */
 366 #define KERN_MAXPROCPERUID      28      /* int: max processes per uid */
 367 #define KERN_DUMPDEV            29      /* udev_t: device to dump on */
 368 #define KERN_IPC                30      /* node: anything related to IPC */
 369 #define KERN_DUMMY              31      /* unused */
 370 #define KERN_PS_STRINGS         32      /* int: address of PS_STRINGS */
 371 #define KERN_USRSTACK           33      /* int: address of USRSTACK */
 372 #define KERN_LOGSIGEXIT         34      /* int: do we log sigexit procs? */
 373 #define KERN_IOV_MAX            35      /* int: value of UIO_MAXIOV */
 374 #define KERN_MAXPOSIXLOCKSPERUID 36     /* int: max POSIX locks per uid */
 375 #define KERN_MAXID              37      /* number of valid kern ids */
 376
 377 #define CTL_KERN_NAMES { \
 378         { 0, 0 }, \
 379         { "ostype", CTLTYPE_STRING }, \
 380         { "osrelease", CTLTYPE_STRING }, \
 381         { "osrevision", CTLTYPE_INT }, \
 382         { "version", CTLTYPE_STRING }, \
 383         { "maxvnodes", CTLTYPE_INT }, \
 384         { "maxproc", CTLTYPE_INT }, \
 385         { "maxfiles", CTLTYPE_INT }, \
 386         { "argmax", CTLTYPE_INT }, \
 387         { "securelevel", CTLTYPE_INT }, \
 388         { "hostname", CTLTYPE_STRING }, \
 389         { "hostid", CTLTYPE_UINT }, \
 390         { "clockrate", CTLTYPE_STRUCT }, \
 391         { "vnode", CTLTYPE_STRUCT }, \
 392         { "proc", CTLTYPE_STRUCT }, \
 393         { "file", CTLTYPE_STRUCT }, \
 394         { "profiling", CTLTYPE_NODE }, \
 395         { "posix1version", CTLTYPE_INT }, \
 396         { "ngroups", CTLTYPE_INT }, \
 397         { "job_control", CTLTYPE_INT }, \
 398         { "saved_ids", CTLTYPE_INT }, \
 399         { "boottime", CTLTYPE_STRUCT }, \
 400         { "nisdomainname", CTLTYPE_STRING }, \
 401         { "update", CTLTYPE_INT }, \
 402         { "osreldate", CTLTYPE_INT }, \
 403         { "ntp_pll", CTLTYPE_NODE }, \
 404         { "bootfile", CTLTYPE_STRING }, \
 405         { "maxfilesperproc", CTLTYPE_INT }, \
 406         { "maxprocperuid", CTLTYPE_INT }, \
 407         { "dumpdev", CTLTYPE_STRUCT }, /* we lie; don't print as int */ \
 408         { "ipc", CTLTYPE_NODE }, \
 409         { "dummy", CTLTYPE_INT }, \
 410         { "ps_strings", CTLTYPE_INT }, \
 411         { "usrstack", CTLTYPE_INT }, \
 412         { "logsigexit", CTLTYPE_INT }, \
 413         { "iov_max", CTLTYPE_INT }, \
 414         { "maxposixlocksperuid", CTLTYPE_INT }, \
 415 }
 416
 417 /*
 418  * CTL_VFS identifiers
 419  */
 420 #define CTL_VFS_NAMES { \
 421         { "vfsconf", CTLTYPE_STRUCT }, \
 422 }
 423
 424 /*
 425  * KERN_PROC subtypes
 426  */
 427 #define KERN_PROC_ALL           0       /* everything */
 428 #define KERN_PROC_PID           1       /* by process id */
 429 #define KERN_PROC_PGRP          2       /* by process group id */
 430 #define KERN_PROC_SESSION       3       /* by session of pid */
 431 #define KERN_PROC_TTY           4       /* by controlling tty */
 432 #define KERN_PROC_UID           5       /* by effective uid */
 433 #define KERN_PROC_RUID          6       /* by real uid */
 434 #define KERN_PROC_ARGS          7       /* get/set arguments/proctitle */
 435
 436 #define KERN_PROC_FLAGMASK      0x10
 437 #define KERN_PROC_FLAG_LWP      0x10
 438
 439 /*
 440  * KERN_IPC identifiers
 441  */
 442 #define KIPC_MAXSOCKBUF         1       /* int: max size of a socket buffer */
 443 #define KIPC_SOCKBUF_WASTE      2       /* int: wastage factor in sockbuf */
 444 #define KIPC_SOMAXCONN          3       /* int: max length of connection q */
 445 #define KIPC_MAX_LINKHDR        4       /* int: max length of link header */
 446 #define KIPC_MAX_PROTOHDR       5       /* int: max length of network header */
 447 #define KIPC_MAX_HDR            6       /* int: max total length of headers */
 448 #define KIPC_MAX_DATALEN        7       /* int: max length of data? */
 449 #define KIPC_MBSTAT             8       /* struct: mbuf usage statistics */
 450 #define KIPC_NMBCLUSTERS        9       /* int: maximum mbuf clusters */
 451
 452 /*
 453  * CTL_HW identifiers
 454  */
 455 #define HW_MACHINE       1              /* string: machine class */
 456 #define HW_MODEL         2              /* string: specific machine model */
 457 #define HW_NCPU          3              /* int: number of cpus */
 458 #define HW_BYTEORDER     4              /* int: machine byte order */
 459 #define HW_PHYSMEM       5              /* int: total memory */
 460 #define HW_USERMEM       6              /* int: non-kernel memory */
 461 #define HW_PAGESIZE      7              /* int: software page size */
 462 #define HW_DISKNAMES     8              /* strings: disk drive names */
 463 #define HW_DISKSTATS     9              /* struct: diskstats[] */
 464 #define HW_FLOATINGPT   10              /* int: has HW floating point? */
 465 #define HW_MACHINE_ARCH 11              /* string: machine architecture */
 466 #define HW_MACHINE_PLATFORM 12          /* string: platform architecture */
 467 #define HW_SENSORS      13              /* node: hardware sensors */
 468 #define HW_MAXID        14              /* number of valid hw ids */
 469
 470 #define CTL_HW_NAMES { \
 471         { 0, 0 }, \
 472         { "machine", CTLTYPE_STRING }, \
 473         { "model", CTLTYPE_STRING }, \
 474         { "ncpu", CTLTYPE_INT }, \
 475         { "byteorder", CTLTYPE_INT }, \
 476         { "physmem", CTLTYPE_UINT }, \
 477         { "usermem", CTLTYPE_UINT }, \
 478         { "pagesize", CTLTYPE_INT }, \
 479         { "disknames", CTLTYPE_STRUCT }, \
 480         { "diskstats", CTLTYPE_STRUCT }, \
 481         { "floatingpoint", CTLTYPE_INT }, \
 482         { "arch", CTLTYPE_STRING }, \
 483         { "platform", CTLTYPE_STRING }, \
 484         { "sensors", CTLTYPE_NODE }, \
 485 }
 486
 487 /*
 488  * CTL_USER definitions
 489  */
 490 #define USER_CS_PATH             1      /* string: _CS_PATH */
 491 #define USER_BC_BASE_MAX         2      /* int: BC_BASE_MAX */
 492 #define USER_BC_DIM_MAX          3      /* int: BC_DIM_MAX */
 493 #define USER_BC_SCALE_MAX        4      /* int: BC_SCALE_MAX */
 494 #define USER_BC_STRING_MAX       5      /* int: BC_STRING_MAX */
 495 #define USER_COLL_WEIGHTS_MAX    6      /* int: COLL_WEIGHTS_MAX */
 496 #define USER_EXPR_NEST_MAX       7      /* int: EXPR_NEST_MAX */
 497 #define USER_LINE_MAX            8      /* int: LINE_MAX */
 498 #define USER_RE_DUP_MAX          9      /* int: RE_DUP_MAX */
 499 #define USER_POSIX2_VERSION     10      /* int: POSIX2_VERSION */
 500 #define USER_POSIX2_C_BIND      11      /* int: POSIX2_C_BIND */
 501 #define USER_POSIX2_C_DEV       12      /* int: POSIX2_C_DEV */
 502 #define USER_POSIX2_CHAR_TERM   13      /* int: POSIX2_CHAR_TERM */
 503 #define USER_POSIX2_FORT_DEV    14      /* int: POSIX2_FORT_DEV */
 504 #define USER_POSIX2_FORT_RUN    15      /* int: POSIX2_FORT_RUN */
 505 #define USER_POSIX2_LOCALEDEF   16      /* int: POSIX2_LOCALEDEF */
 506 #define USER_POSIX2_SW_DEV      17      /* int: POSIX2_SW_DEV */
 507 #define USER_POSIX2_UPE         18      /* int: POSIX2_UPE */
 508 #define USER_STREAM_MAX         19      /* int: POSIX2_STREAM_MAX */
 509 #define USER_TZNAME_MAX         20      /* int: POSIX2_TZNAME_MAX */
 510 #define USER_MAXID              21      /* number of valid user ids */
 511
 512 #define CTL_USER_NAMES { \
 513         { 0, 0 }, \
 514         { "cs_path", CTLTYPE_STRING }, \
 515         { "bc_base_max", CTLTYPE_INT }, \
 516         { "bc_dim_max", CTLTYPE_INT }, \
 517         { "bc_scale_max", CTLTYPE_INT }, \
 518         { "bc_string_max", CTLTYPE_INT }, \
 519         { "coll_weights_max", CTLTYPE_INT }, \
 520         { "expr_nest_max", CTLTYPE_INT }, \
 521         { "line_max", CTLTYPE_INT }, \
 522         { "re_dup_max", CTLTYPE_INT }, \
 523         { "posix2_version", CTLTYPE_INT }, \
 524         { "posix2_c_bind", CTLTYPE_INT }, \
 525         { "posix2_c_dev", CTLTYPE_INT }, \
 526         { "posix2_char_term", CTLTYPE_INT }, \
 527         { "posix2_fort_dev", CTLTYPE_INT }, \
 528         { "posix2_fort_run", CTLTYPE_INT }, \
 529         { "posix2_localedef", CTLTYPE_INT }, \
 530         { "posix2_sw_dev", CTLTYPE_INT }, \
 531         { "posix2_upe", CTLTYPE_INT }, \
 532         { "stream_max", CTLTYPE_INT }, \
 533         { "tzname_max", CTLTYPE_INT }, \
 534 }
 535
 536 #define CTL_P1003_1B_ASYNCHRONOUS_IO            1       /* boolean */
 537 #define CTL_P1003_1B_MAPPED_FILES               2       /* boolean */
 538 #define CTL_P1003_1B_MEMLOCK                    3       /* boolean */
 539 #define CTL_P1003_1B_MEMLOCK_RANGE              4       /* boolean */
 540 #define CTL_P1003_1B_MEMORY_PROTECTION          5       /* boolean */
 541 #define CTL_P1003_1B_MESSAGE_PASSING            6       /* boolean */
 542 #define CTL_P1003_1B_PRIORITIZED_IO             7       /* boolean */
 543 #define CTL_P1003_1B_PRIORITY_SCHEDULING        8       /* boolean */
 544 #define CTL_P1003_1B_REALTIME_SIGNALS           9       /* boolean */
 545 #define CTL_P1003_1B_SEMAPHORES                 10      /* boolean */
 546 #define CTL_P1003_1B_FSYNC                      11      /* boolean */
 547 #define CTL_P1003_1B_SHARED_MEMORY_OBJECTS      12      /* boolean */
 548 #define CTL_P1003_1B_SYNCHRONIZED_IO            13      /* boolean */
 549 #define CTL_P1003_1B_TIMERS                     14      /* boolean */
 550 #define CTL_P1003_1B_AIO_LISTIO_MAX             15      /* int */
 551 #define CTL_P1003_1B_AIO_MAX                    16      /* int */
 552 #define CTL_P1003_1B_AIO_PRIO_DELTA_MAX         17      /* int */
 553 #define CTL_P1003_1B_DELAYTIMER_MAX             18      /* int */
 554 #define CTL_P1003_1B_UNUSED1                    19      /* int */
 555 #define CTL_P1003_1B_PAGESIZE                   20      /* int */
 556 #define CTL_P1003_1B_RTSIG_MAX                  21      /* int */
 557 #define CTL_P1003_1B_SEM_NSEMS_MAX              22      /* int */
 558 #define CTL_P1003_1B_SEM_VALUE_MAX              23      /* int */
 559 #define CTL_P1003_1B_SIGQUEUE_MAX               24      /* int */
 560 #define CTL_P1003_1B_TIMER_MAX                  25      /* int */
 561
 562 #define CTL_P1003_1B_MAXID              26
 563
 564 #define CTL_P1003_1B_NAMES { \
 565         { 0, 0 }, \
 566         { "asynchronous_io", CTLTYPE_INT }, \
 567         { "mapped_files", CTLTYPE_INT }, \
 568         { "memlock", CTLTYPE_INT }, \
 569         { "memlock_range", CTLTYPE_INT }, \
 570         { "memory_protection", CTLTYPE_INT }, \
 571         { "message_passing", CTLTYPE_INT }, \
 572         { "prioritized_io", CTLTYPE_INT }, \
 573         { "priority_scheduling", CTLTYPE_INT }, \
 574         { "realtime_signals", CTLTYPE_INT }, \
 575         { "semaphores", CTLTYPE_INT }, \
 576         { "fsync", CTLTYPE_INT }, \
 577         { "shared_memory_objects", CTLTYPE_INT }, \
 578         { "synchronized_io", CTLTYPE_INT }, \
 579         { "timers", CTLTYPE_INT }, \
 580         { "aio_listio_max", CTLTYPE_INT }, \
 581         { "aio_max", CTLTYPE_INT }, \
 582         { "aio_prio_delta_max", CTLTYPE_INT }, \
 583         { "delaytimer_max", CTLTYPE_INT }, \
 584         { "unused1", CTLTYPE_INT }, \
 585         { "pagesize", CTLTYPE_INT }, \
 586         { "rtsig_max", CTLTYPE_INT }, \
 587         { "nsems_max", CTLTYPE_INT }, \
 588         { "sem_value_max", CTLTYPE_INT }, \
 589         { "sigqueue_max", CTLTYPE_INT }, \
 590         { "timer_max", CTLTYPE_INT }, \
 591 }
 592
 593 #ifdef _KERNEL
 594
 595 /*
 596  * Declare some common oids.
 597  */
 598 extern struct sysctl_oid_list sysctl__children;
 599 SYSCTL_DECL(_kern);
 600 SYSCTL_DECL(_sysctl);
 601 SYSCTL_DECL(_vm);
 602 SYSCTL_DECL(_vfs);
 603 SYSCTL_DECL(_net);
 604 SYSCTL_DECL(_debug);
 605 SYSCTL_DECL(_debug_sizeof);
 606 SYSCTL_DECL(_hw);
 607 SYSCTL_DECL(_hw_bus);
 608 SYSCTL_DECL(_machdep);
 609 SYSCTL_DECL(_user);
 610 SYSCTL_DECL(_compat);
 611 SYSCTL_DECL(_lwkt);
 612 SYSCTL_DECL(_security);
 613
 614 /*
 615  * Common second-level oids.
 616  */
 617 SYSCTL_DECL(_kern_ipc);
 618
 619 extern char     machine[];
 620 extern char     osrelease[];
 621 extern char     ostype[];
 622 extern char     kern_ident[];
 623
 624 /* Dynamic oid handling */
 625 struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist,
 626                 struct sysctl_oid_list *parent, int nbr, const char *name,
 627                 int kind, void *arg1, int arg2,
 628                 int (*handler) (SYSCTL_HANDLER_ARGS),
 629                 const char *fmt, const char *descr);
 630 int     sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse);
 631 int     sysctl_ctx_init(struct sysctl_ctx_list *clist);
 632 int     sysctl_ctx_free(struct sysctl_ctx_list *clist);
 633 struct  sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist,
 634                 struct sysctl_oid *oidp);
 635 struct  sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist,
 636                 struct sysctl_oid *oidp);
 637 int     sysctl_ctx_entry_del(struct sysctl_ctx_list *clist,
 638                 struct sysctl_oid *oidp);
 639
 640 int     kernel_sysctl(int *name, u_int namelen, void *old,
 641                       size_t *oldlenp, void *new, size_t newlen,
 642                       size_t *retval);
 643 int     kernel_sysctlbyname(char *name,
 644                 void *old, size_t *oldlenp, void *new, size_t newlen,
 645                 size_t *retval);
 646 int     userland_sysctl(int *name, u_int namelen, void *old,
 647                         size_t *oldlenp, int inkernel, void *new, size_t newlen,
 648                         size_t *retval);
 649 int     sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid,
 650                         int *nindx, struct sysctl_req *req);
 651
 652 int     sysctl_int_range(SYSCTL_HANDLER_ARGS, int low, int high);
 653
 654 #endif  /* _KERNEL */
 655
 656 #if !defined(_KERNEL) || defined(_KERNEL_VIRTUAL)
 657
 658 #include <sys/cdefs.h>
 659
 660 __BEGIN_DECLS
 661 int     sysctl (int *, u_int, void *, size_t *, void *, size_t);
 662 int     sysctlbyname (const char *, void *, size_t *, void *, size_t);
 663 int     sysctlnametomib (const char *, int *, size_t *);
 664 __END_DECLS
 665
 666 #endif  /* _KERNEL && _KERNEL_VIRTUAL */
 667
 668 #endif  /* !_SYS_SYSCTL_H_ */