bsd/sys/sysctl.h

   1 /*
   2  * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  29 /*
  30  * Copyright (c) 1989, 1993
  31  *      The Regents of the University of California.  All rights reserved.
  32  *
  33  * This code is derived from software contributed to Berkeley by
  34  * Mike Karels at Berkeley Software Design, Inc.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  * 3. All advertising materials mentioning features or use of this software
  45  *    must display the following acknowledgement:
  46  *      This product includes software developed by the University of
  47  *      California, Berkeley and its contributors.
  48  * 4. Neither the name of the University nor the names of its contributors
  49  *    may be used to endorse or promote products derived from this software
  50  *    without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  53  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  54  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  55  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  56  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  57  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  58  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  59  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  60  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  61  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  62  * SUCH DAMAGE.
  63  *
  64  *      @(#)sysctl.h    8.1 (Berkeley) 6/2/93
  65  */
  66 /*
  67  * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce
  68  * support for mandatory and extensible security protections.  This notice
  69  * is included in support of clause 2.2 (b) of the Apple Public License,
  70  * Version 2.0.
  71  */
  72
  73 #ifndef _SYS_SYSCTL_H_
  74 #define _SYS_SYSCTL_H_
  75
  76 /*
  77  * These are for the eproc structure defined below.
  78  */
  79 #include <sys/cdefs.h>
  80
  81 #include <sys/appleapiopts.h>
  82 #ifndef KERNEL
  83 #include <sys/time.h>
  84 #include <sys/ucred.h>
  85 #else
  86 #include <libkern/sysctl.h>
  87 #endif
  88 #include <sys/proc.h>
  89 #include <sys/vm.h>
  90
  91 #ifdef XNU_KERNEL_PRIVATE
  92 #include <sys/linker_set.h>
  93 #endif
  94
  95 /*
  96  * Definitions for sysctl call.  The sysctl call uses a hierarchical name
  97  * for objects that can be examined or modified.  The name is expressed as
  98  * a sequence of integers.  Like a file path name, the meaning of each
  99  * component depends on its place in the hierarchy.  The top-level and kern
 100  * identifiers are defined here, and other identifiers are defined in the
 101  * respective subsystem header files.
 102  */
 103
 104 #define CTL_MAXNAME     12      /* largest number of components supported */
 105
 106 /*
 107  * Each subsystem defined by sysctl defines a list of variables
 108  * for that subsystem. Each name is either a node with further
 109  * levels defined below it, or it is a leaf of some particular
 110  * type given below. Each sysctl level defines a set of name/type
 111  * pairs to be used by sysctl(1) in manipulating the subsystem.
 112  *
 113  * When declaring new sysctl names, unless your sysctl is callable
 114  * from the paging path, please use the CTLFLAG_LOCKED flag in the
 115  * type to indicate that all necessary locking will be handled
 116  * within the sysctl.
 117  *
 118  * Any sysctl defined without CTLFLAG_LOCKED is considered legacy
 119  * and will be protected by both wiring the user process pages and,
 120  * if it is a 32 bit legacy KEXT, by the obsolete kernel funnel.
 121  *
 122  * Note:        This is not optimal, so it is best to handle locking
 123  *              yourself, if you are able to do so.  A simple design
 124  *              pattern for use to avoid in a single function known
 125  *              to potentially be in the paging path ot doing a DMA
 126  *              to physical memory in a user space process is:
 127  *
 128  *                      lock
 129  *                      perform operation vs. local buffer
 130  *                      unlock
 131  *                      SYSCTL_OUT(rey, local buffer, length)
 132  *
 133  *              ...this assumes you are not using a deep call graph
 134  *              or are unable to pass a local buffer address as a
 135  *              parameter into your deep call graph.
 136  *
 137  *              Note that very large user buffers can fail the wire
 138  *              if to do so would require more physical pages than
 139  *              are available (the caller will get an ENOMEM error,
 140  *              see sysctl_mem_hold() for details).
 141  */
 142 struct ctlname {
 143         char    *ctl_name;      /* subsystem name */
 144         int     ctl_type;       /* type of name */
 145 };
 146
 147 #define CTLTYPE         0xf     /* Mask for the type */
 148 #define CTLTYPE_NODE    1       /* name is a node */
 149 #define CTLTYPE_INT     2       /* name describes an integer */
 150 #define CTLTYPE_STRING  3       /* name describes a string */
 151 #define CTLTYPE_QUAD    4       /* name describes a 64-bit number */
 152 #define CTLTYPE_OPAQUE  5       /* name describes a structure */
 153 #define CTLTYPE_STRUCT  CTLTYPE_OPAQUE  /* name describes a structure */
 154
 155 #define CTLFLAG_RD      0x80000000      /* Allow reads of variable */
 156 #define CTLFLAG_WR      0x40000000      /* Allow writes to the variable */
 157 #define CTLFLAG_RW      (CTLFLAG_RD|CTLFLAG_WR)
 158 #define CTLFLAG_NOLOCK  0x20000000      /* XXX Don't Lock */
 159 #define CTLFLAG_ANYBODY 0x10000000      /* All users can set this var */
 160 #define CTLFLAG_SECURE  0x08000000      /* Permit set only if securelevel<=0 */
 161 #define CTLFLAG_MASKED  0x04000000      /* deprecated variable, do not display */
 162 #define CTLFLAG_NOAUTO  0x02000000      /* do not auto-register */
 163 #define CTLFLAG_KERN    0x01000000      /* valid inside the kernel */
 164 #define CTLFLAG_LOCKED  0x00800000      /* node will handle locking itself */
 165 #define CTLFLAG_OID2    0x00400000      /* struct sysctl_oid has version info */
 166
 167 /*
 168  * USE THIS instead of a hardwired number from the categories below
 169  * to get dynamically assigned sysctl entries using the linker-set
 170  * technology. This is the way nearly all new sysctl variables should
 171  * be implemented.
 172  *
 173  * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, "");
 174  *
 175  * Note that linker set technology will automatically register all nodes
 176  * declared like this on kernel initialization, UNLESS they are defined
 177  * in I/O-Kit. In this case, you have to call sysctl_register_oid()
 178  * manually - just like in a KEXT.
 179  */
 180 #define OID_AUTO        (-1)
 181 #define OID_AUTO_START 100 /* conventional */
 182
 183 #ifdef KERNEL
 184 #define SYSCTL_HANDLER_ARGS (struct sysctl_oid *oidp, void *arg1, int arg2, \
 185         struct sysctl_req *req)
 186
 187
 188 /*
 189  * This describes the access space for a sysctl request.  This is needed
 190  * so that we can use the interface from the kernel or from user-space.
 191  */
 192 struct sysctl_req {
 193         struct proc     *p;
 194         int             lock;
 195         user_addr_t     oldptr;         /* pointer to user supplied buffer */
 196         size_t          oldlen;         /* user buffer length (also returned) */
 197         size_t          oldidx;         /* total data iteratively copied out */
 198         int             (*oldfunc)(struct sysctl_req *, const void *, size_t);
 199         user_addr_t     newptr;         /* buffer containing new value */
 200         size_t          newlen;         /* length of new value */
 201         size_t          newidx;         /* total data iteratively copied in */
 202         int             (*newfunc)(struct sysctl_req *, void *, size_t);
 203 };
 204
 205 SLIST_HEAD(sysctl_oid_list, sysctl_oid);
 206
 207 #define SYSCTL_OID_VERSION      1       /* current OID structure version */
 208
 209 /*
 210  * This describes one "oid" in the MIB tree.  Potentially more nodes can
 211  * be hidden behind it, expanded by the handler.
 212  *
 213  * NOTES:       We implement binary comparibility between CTLFLAG_OID2 and
 214  *              pre-CTLFLAG_OID2 structure in sysctl_register_oid() and in
 215  *              sysctl_unregister_oid() using the fact that the fields up
 216  *              to oid_fmt are unchanged, and that the field immediately
 217  *              following is on an alignment boundary following a pointer
 218  *              type and is also a pointer.  This lets us get the previous
 219  *              size of the structure, and the copy-cut-off point, using
 220  *              the offsetof() language primitive, and these values  are
 221  *              used in conjunction with the fact that earlier and future
 222  *              statically compiled sysctl_oid structures are declared via
 223  *              macros.  This lets us overload the macros so that the addition
 224  *              of the CTLFLAG_OID2 in newly compiled code containing sysctl
 225  *              node declarations, subsequently allowing us to to avoid
 226  *              changing the KPI used for non-static (un)registration in
 227  *              KEXTs.
 228  *
 229  *              This depends on the fact that people declare SYSCTLs,
 230  *              rather than declaring sysctl_oid structures.  All new code
 231  *              should avoid declaring struct sysctl_oid's directly without
 232  *              the macros; the current risk for this is limited to losing
 233  *              your description field and ending up with a malloc'ed copy,
 234  *              as if it were a legacy binary static declaration via SYSCTL;
 235  *              in the future, we may deprecate access to a named structure
 236  *              type in third party code.  Use the macros, or our code will
 237  *              end up with compile errors when that happens.
 238  *
 239  *              Please try to include a long description of the field in any
 240  *              new sysctl declarations (all the macros support this).  This
 241  *              field may be the only human readable documentation your users
 242  *              get for your sysctl.
 243  */
 244 struct sysctl_oid {
 245         struct sysctl_oid_list *oid_parent;
 246         SLIST_ENTRY(sysctl_oid) oid_link;
 247         int             oid_number;
 248         int             oid_kind;
 249         void            *oid_arg1;
 250         int             oid_arg2;
 251         const char      *oid_name;
 252         int             (*oid_handler) SYSCTL_HANDLER_ARGS;
 253         const char      *oid_fmt;
 254         const char      *oid_descr; /* offsetof() field / long description */
 255         int             oid_version;
 256         int             oid_refcnt;
 257 };
 258
 259 #define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l)
 260 #define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l)
 261
 262 typedef int (* sysctl_handler_t) SYSCTL_HANDLER_ARGS;
 263
 264 __BEGIN_DECLS
 265
 266 /* old interface */
 267 int sysctl_handle_int SYSCTL_HANDLER_ARGS;
 268 int sysctl_handle_long SYSCTL_HANDLER_ARGS;
 269 int sysctl_handle_quad SYSCTL_HANDLER_ARGS;
 270 int sysctl_handle_int2quad SYSCTL_HANDLER_ARGS;
 271 int sysctl_handle_string SYSCTL_HANDLER_ARGS;
 272 int sysctl_handle_opaque SYSCTL_HANDLER_ARGS;
 273 /* new interface */
 274 int sysctl_io_number(struct sysctl_req *req, long long bigValue, size_t valueSize, void *pValue, int *changed);
 275 int sysctl_io_string(struct sysctl_req *req, char *pValue, size_t valueSize, int trunc, int *changed);
 276 int sysctl_io_opaque(struct sysctl_req *req, void *pValue, size_t valueSize, int *changed);
 277
 278 /*
 279  * These functions are used to add/remove an oid from the mib.
 280  */
 281 void sysctl_register_oid(struct sysctl_oid *oidp);
 282 void sysctl_unregister_oid(struct sysctl_oid *oidp);
 283
 284 /* Not exported */
 285 void sysctl_register_fixed(void);
 286
 287 __END_DECLS
 288
 289 /* Declare an oid to allow child oids to be added to it. */
 290 #define SYSCTL_DECL(name)                                       \
 291         extern struct sysctl_oid_list sysctl_##name##_children
 292
 293 #ifdef XNU_KERNEL_PRIVATE
 294 #define SYSCTL_LINKER_SET_ENTRY LINKER_SET_ENTRY
 295 #else
 296 #define SYSCTL_LINKER_SET_ENTRY(a, b)
 297 #endif
 298 /* This constructs a "raw" MIB oid. */
 299 #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
 300         struct sysctl_oid sysctl_##parent##_##name = {                   \
 301                 &sysctl_##parent##_children, { 0 },                      \
 302                 nbr, kind|CTLFLAG_OID2, a1, a2, #name, handler, fmt, descr, SYSCTL_OID_VERSION, 0 }; \
 303         SYSCTL_LINKER_SET_ENTRY(__sysctl_set, sysctl_##parent##_##name)
 304
 305 /* This constructs a node from which other oids can hang. */
 306 #define SYSCTL_NODE(parent, nbr, name, access, handler, descr)              \
 307         struct sysctl_oid_list sysctl_##parent##_##name##_children;         \
 308         SYSCTL_OID(parent, nbr, name, CTLTYPE_NODE|access,                  \
 309                    (void*)&sysctl_##parent##_##name##_children, 0, handler, \
 310                    "N", descr);
 311
 312 /* Oid for a string.  len can be 0 to indicate '\0' termination. */
 313 #define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \
 314         SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|access, \
 315                 arg, len, sysctl_handle_string, "A", descr)
 316
 317 #define SYSCTL_COMPAT_INT(parent, nbr, name, access, ptr, val, descr) \
 318         SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|access, \
 319                ptr, val, sysctl_handle_int, "I", descr)
 320
 321 #define SYSCTL_COMPAT_UINT(parent, nbr, name, access, ptr, val, descr) \
 322         SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|access, \
 323                 ptr, val, sysctl_handle_int, "IU", descr)
 324
 325 /* Oid for an int.  If ptr is NULL, val is returned. */
 326 #define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \
 327         SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|access, \
 328                ptr, val, sysctl_handle_int, "I", descr); \
 329         typedef char _sysctl_##parent##_##name##_size_check[(__builtin_constant_p(ptr) || sizeof(*(ptr)) == sizeof(int)) ? 0 : -1];
 330
 331 /* Oid for an unsigned int.  If ptr is NULL, val is returned. */
 332 #define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \
 333         SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|access, \
 334                 ptr, val, sysctl_handle_int, "IU", descr); \
 335         typedef char _sysctl_##parent##_##name##_size_check[(__builtin_constant_p(ptr) || sizeof(*(ptr)) == sizeof(unsigned int)) ? 0 : -1];
 336
 337 /* Oid for a long.  The pointer must be non NULL. */
 338 #define SYSCTL_LONG(parent, nbr, name, access, ptr, descr) \
 339         SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|access, \
 340                 ptr, 0, sysctl_handle_long, "L", descr); \
 341         typedef char _sysctl_##parent##_##name##_size_check[(__builtin_constant_p(ptr) || sizeof(*(ptr)) == sizeof(long)) ? 0 : -1];
 342
 343 /* Oid for a quad.  The pointer must be non NULL. */
 344 #define SYSCTL_QUAD(parent, nbr, name, access, ptr, descr) \
 345         SYSCTL_OID(parent, nbr, name, CTLTYPE_QUAD|access, \
 346                 ptr, 0, sysctl_handle_quad, "Q", descr); \
 347         typedef char _sysctl_##parent##_##name##_size_check[(__builtin_constant_p(ptr) || sizeof(*(ptr)) == sizeof(long long)) ? 0 : -1];
 348
 349 /* Oid for an opaque object.  Specified by a pointer and a length. */
 350 #define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \
 351         SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|access, \
 352                 ptr, len, sysctl_handle_opaque, fmt, descr)
 353
 354 /* Oid for a struct.  Specified by a pointer and a type. */
 355 #define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \
 356         SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|access, \
 357                 ptr, sizeof(struct type), sysctl_handle_opaque, \
 358                 "S," #type, descr)
 359
 360 /* Oid for a procedure.  Specified by a pointer and an arg. */
 361 #define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
 362         SYSCTL_OID(parent, nbr, name, access, \
 363                 ptr, arg, handler, fmt, descr)
 364
 365
 366 extern struct sysctl_oid_list sysctl__children;
 367 SYSCTL_DECL(_kern);
 368 SYSCTL_DECL(_sysctl);
 369 SYSCTL_DECL(_vm);
 370 SYSCTL_DECL(_vfs);
 371 SYSCTL_DECL(_net);
 372 SYSCTL_DECL(_debug);
 373 SYSCTL_DECL(_hw);
 374 SYSCTL_DECL(_machdep);
 375 SYSCTL_DECL(_user);
 376
 377 #endif /* KERNEL */
 378
 379 #ifdef XNU_KERNEL_PRIVATE
 380 #define SYSCTL_DEF_ENABLED
 381 #else
 382 #ifndef KERNEL
 383 #define SYSCTL_DEF_ENABLED
 384 #endif
 385 #endif
 386
 387 #ifdef SYSCTL_DEF_ENABLED
 388 /*
 389  * Top-level identifiers
 390  */
 391 #define CTL_UNSPEC      0               /* unused */
 392 #define CTL_KERN        1               /* "high kernel": proc, limits */
 393 #define CTL_VM          2               /* virtual memory */
 394 #define CTL_VFS         3               /* file system, mount type is next */
 395 #define CTL_NET         4               /* network, see socket.h */
 396 #define CTL_DEBUG       5               /* debugging parameters */
 397 #define CTL_HW          6               /* generic cpu/io */
 398 #define CTL_MACHDEP     7               /* machine dependent */
 399 #define CTL_USER        8               /* user-level */
 400 #define CTL_MAXID       9               /* number of valid top-level ids */
 401
 402 #define CTL_NAMES { \
 403         { 0, 0 }, \
 404         { "kern", CTLTYPE_NODE }, \
 405         { "vm", CTLTYPE_NODE }, \
 406         { "vfs", CTLTYPE_NODE }, \
 407         { "net", CTLTYPE_NODE }, \
 408         { "debug", CTLTYPE_NODE }, \
 409         { "hw", CTLTYPE_NODE }, \
 410         { "machdep", CTLTYPE_NODE }, \
 411         { "user", CTLTYPE_NODE }, \
 412 }
 413
 414 /*
 415  * CTL_KERN identifiers
 416  */
 417 #define KERN_OSTYPE              1      /* string: system version */
 418 #define KERN_OSRELEASE           2      /* string: system release */
 419 #define KERN_OSREV               3      /* int: system revision */
 420 #define KERN_VERSION             4      /* string: compile time info */
 421 #define KERN_MAXVNODES           5      /* int: max vnodes */
 422 #define KERN_MAXPROC             6      /* int: max processes */
 423 #define KERN_MAXFILES            7      /* int: max open files */
 424 #define KERN_ARGMAX              8      /* int: max arguments to exec */
 425 #define KERN_SECURELVL           9      /* int: system security level */
 426 #define KERN_HOSTNAME           10      /* string: hostname */
 427 #define KERN_HOSTID             11      /* int: host identifier */
 428 #define KERN_CLOCKRATE          12      /* struct: struct clockrate */
 429 #define KERN_VNODE              13      /* struct: vnode structures */
 430 #define KERN_PROC               14      /* struct: process entries */
 431 #define KERN_FILE               15      /* struct: file entries */
 432 #define KERN_PROF               16      /* node: kernel profiling info */
 433 #define KERN_POSIX1             17      /* int: POSIX.1 version */
 434 #define KERN_NGROUPS            18      /* int: # of supplemental group ids */
 435 #define KERN_JOB_CONTROL        19      /* int: is job control available */
 436 #define KERN_SAVED_IDS          20      /* int: saved set-user/group-ID */
 437 #define KERN_BOOTTIME           21      /* struct: time kernel was booted */
 438 #define KERN_NISDOMAINNAME      22      /* string: YP domain name */
 439 #define KERN_DOMAINNAME         KERN_NISDOMAINNAME
 440 #define KERN_MAXPARTITIONS      23      /* int: number of partitions/disk */
 441 #define KERN_KDEBUG                     24      /* int: kernel trace points */
 442 #define KERN_UPDATEINTERVAL     25      /* int: update process sleep time */
 443 #define KERN_OSRELDATE          26      /* int: OS release date */
 444 #define KERN_NTP_PLL            27      /* node: NTP PLL control */
 445 #define KERN_BOOTFILE           28      /* string: name of booted kernel */
 446 #define KERN_MAXFILESPERPROC    29      /* int: max open files per proc */
 447 #define KERN_MAXPROCPERUID      30      /* int: max processes per uid */
 448 #define KERN_DUMPDEV            31      /* dev_t: device to dump on */
 449 #define KERN_IPC                32      /* node: anything related to IPC */
 450 #define KERN_DUMMY              33      /* unused */
 451 #define KERN_PS_STRINGS 34      /* int: address of PS_STRINGS */
 452 #define KERN_USRSTACK32 35      /* int: address of USRSTACK */
 453 #define KERN_LOGSIGEXIT 36      /* int: do we log sigexit procs? */
 454 #define KERN_SYMFILE            37      /* string: kernel symbol filename */
 455 #define KERN_PROCARGS           38
 456                              /* 39 was KERN_PCSAMPLES... now deprecated */
 457 #define KERN_NETBOOT            40      /* int: are we netbooted? 1=yes,0=no */
 458 #define KERN_PANICINFO          41      /* node: panic UI information */
 459 #define KERN_SYSV               42      /* node: System V IPC information */
 460 #define KERN_AFFINITY           43      /* xxx */
 461 #define KERN_TRANSLATE          44      /* xxx */
 462 #define KERN_CLASSIC            KERN_TRANSLATE  /* XXX backwards compat */
 463 #define KERN_EXEC               45      /* xxx */
 464 #define KERN_CLASSICHANDLER     KERN_EXEC /* XXX backwards compatibility */
 465 #define KERN_AIOMAX             46      /* int: max aio requests */
 466 #define KERN_AIOPROCMAX         47      /* int: max aio requests per process */
 467 #define KERN_AIOTHREADS         48      /* int: max aio worker threads */
 468 #ifdef __APPLE_API_UNSTABLE
 469 #define KERN_PROCARGS2          49
 470 #endif /* __APPLE_API_UNSTABLE */
 471 #define KERN_COREFILE           50      /* string: corefile format string */
 472 #define KERN_COREDUMP           51      /* int: whether to coredump at all */
 473 #define KERN_SUGID_COREDUMP     52      /* int: whether to dump SUGID cores */
 474 #define KERN_PROCDELAYTERM      53      /* int: set/reset current proc for delayed termination during shutdown */
 475 #define KERN_SHREG_PRIVATIZABLE 54      /* int: can shared regions be privatized ? */
 476                              /* 55 was KERN_PROC_LOW_PRI_IO... now deprecated */
 477 #define KERN_LOW_PRI_WINDOW     56      /* int: set/reset throttle window - milliseconds */
 478 #define KERN_LOW_PRI_DELAY      57      /* int: set/reset throttle delay - milliseconds */
 479 #define KERN_POSIX              58      /* node: posix tunables */
 480 #define KERN_USRSTACK64         59      /* LP64 user stack query */
 481 #define KERN_NX_PROTECTION      60      /* int: whether no-execute protection is enabled */
 482 #define KERN_TFP                61      /* Task for pid settings */
 483 #define KERN_PROCNAME           62      /* setup process program  name(2*MAXCOMLEN) */
 484 #define KERN_THALTSTACK         63      /* for compat with older x86 and does nothing */
 485 #define KERN_SPECULATIVE_READS  64      /* int: whether speculative reads are disabled */
 486 #define KERN_OSVERSION          65      /* for build number i.e. 9A127 */
 487 #define KERN_SAFEBOOT           66      /* are we booted safe? */
 488 #define KERN_LCTX               67      /* node: login context */
 489 #define KERN_RAGEVNODE          68
 490 #define KERN_TTY                69      /* node: tty settings */
 491 #define KERN_CHECKOPENEVT       70      /* spi: check the VOPENEVT flag on vnodes at open time */
 492 #define KERN_THREADNAME         71      /* set/get thread name */
 493 #define KERN_MAXID              72      /* number of valid kern ids */
 494 /*
 495  * Don't add any more sysctls like this.  Instead, use the SYSCTL_*() macros
 496  * and OID_AUTO. This will have the added benefit of not having to recompile
 497  * sysctl(8) to pick up your changes.
 498  */
 499
 500 #if COUNT_SYSCALLS && defined(KERNEL)
 501 #define KERN_COUNT_SYSCALLS (KERN_OSTYPE + 1000)        /* keep called count for each bsd syscall */
 502 #endif
 503
 504 #if defined(__LP64__)
 505 #define KERN_USRSTACK KERN_USRSTACK64
 506 #else
 507 #define KERN_USRSTACK KERN_USRSTACK32
 508 #endif
 509
 510
 511 /* KERN_RAGEVNODE types */
 512 #define KERN_RAGE_PROC          1
 513 #define KERN_RAGE_THREAD        2
 514 #define KERN_UNRAGE_PROC        3
 515 #define KERN_UNRAGE_THREAD      4
 516
 517 /* KERN_OPENEVT types */
 518 #define KERN_OPENEVT_PROC     1
 519 #define KERN_UNOPENEVT_PROC   2
 520
 521 /* KERN_TFP types */
 522 #define KERN_TFP_POLICY                 1
 523
 524 /* KERN_TFP_POLICY values . All policies allow task port for self */
 525 #define KERN_TFP_POLICY_DENY            0       /* Deny Mode: None allowed except privileged */
 526 #define KERN_TFP_POLICY_DEFAULT         2       /* Default  Mode: related ones allowed and upcall authentication */
 527
 528 /* KERN_KDEBUG types */
 529 #define KERN_KDEFLAGS           1
 530 #define KERN_KDDFLAGS           2
 531 #define KERN_KDENABLE           3
 532 #define KERN_KDSETBUF           4
 533 #define KERN_KDGETBUF           5
 534 #define KERN_KDSETUP            6
 535 #define KERN_KDREMOVE           7
 536 #define KERN_KDSETREG           8
 537 #define KERN_KDGETREG           9
 538 #define KERN_KDREADTR           10
 539 #define KERN_KDPIDTR        11
 540 #define KERN_KDTHRMAP           12
 541 /* Don't use 13 as it is overloaded with KERN_VNODE */
 542 #define KERN_KDPIDEX            14
 543 #define KERN_KDSETRTCDEC        15
 544 #define KERN_KDGETENTROPY       16
 545 #define KERN_KDWRITETR          17
 546 #define KERN_KDWRITEMAP         18
 547
 548
 549 /* KERN_PANICINFO types */
 550 #define KERN_PANICINFO_MAXSIZE  1       /* quad: panic UI image size limit */
 551 #define KERN_PANICINFO_IMAGE    2       /* panic UI in 8-bit kraw format */
 552
 553 #define CTL_KERN_NAMES { \
 554         { 0, 0 }, \
 555         { "ostype", CTLTYPE_STRING }, \
 556         { "osrelease", CTLTYPE_STRING }, \
 557         { "osrevision", CTLTYPE_INT }, \
 558         { "version", CTLTYPE_STRING }, \
 559         { "maxvnodes", CTLTYPE_INT }, \
 560         { "maxproc", CTLTYPE_INT }, \
 561         { "maxfiles", CTLTYPE_INT }, \
 562         { "argmax", CTLTYPE_INT }, \
 563         { "securelevel", CTLTYPE_INT }, \
 564         { "hostname", CTLTYPE_STRING }, \
 565         { "hostid", CTLTYPE_INT }, \
 566         { "clockrate", CTLTYPE_STRUCT }, \
 567         { "vnode", CTLTYPE_STRUCT }, \
 568         { "proc", CTLTYPE_STRUCT }, \
 569         { "file", CTLTYPE_STRUCT }, \
 570         { "profiling", CTLTYPE_NODE }, \
 571         { "posix1version", CTLTYPE_INT }, \
 572         { "ngroups", CTLTYPE_INT }, \
 573         { "job_control", CTLTYPE_INT }, \
 574         { "saved_ids", CTLTYPE_INT }, \
 575         { "boottime", CTLTYPE_STRUCT }, \
 576         { "nisdomainname", CTLTYPE_STRING }, \
 577         { "maxpartitions", CTLTYPE_INT }, \
 578         { "kdebug", CTLTYPE_INT }, \
 579         { "update", CTLTYPE_INT }, \
 580         { "osreldate", CTLTYPE_INT }, \
 581         { "ntp_pll", CTLTYPE_NODE }, \
 582         { "bootfile", CTLTYPE_STRING }, \
 583         { "maxfilesperproc", CTLTYPE_INT }, \
 584         { "maxprocperuid", CTLTYPE_INT }, \
 585         { "dumpdev", CTLTYPE_STRUCT }, /* we lie; don't print as int */ \
 586         { "ipc", CTLTYPE_NODE }, \
 587         { "dummy", CTLTYPE_INT }, \
 588         { "dummy", CTLTYPE_INT }, \
 589         { "usrstack", CTLTYPE_INT }, \
 590         { "logsigexit", CTLTYPE_INT }, \
 591         { "symfile",CTLTYPE_STRING },\
 592         { "procargs",CTLTYPE_STRUCT },\
 593         { "dummy", CTLTYPE_INT },               /* deprecated pcsamples */ \
 594         { "netboot", CTLTYPE_INT }, \
 595         { "panicinfo", CTLTYPE_NODE }, \
 596         { "sysv", CTLTYPE_NODE }, \
 597         { "dummy", CTLTYPE_INT }, \
 598         { "dummy", CTLTYPE_INT }, \
 599         { "exec", CTLTYPE_NODE }, \
 600         { "aiomax", CTLTYPE_INT }, \
 601         { "aioprocmax", CTLTYPE_INT }, \
 602         { "aiothreads", CTLTYPE_INT }, \
 603         { "procargs2",CTLTYPE_STRUCT }, \
 604         { "corefile",CTLTYPE_STRING }, \
 605         { "coredump", CTLTYPE_INT }, \
 606         { "sugid_coredump", CTLTYPE_INT }, \
 607         { "delayterm", CTLTYPE_INT }, \
 608         { "shreg_private", CTLTYPE_INT }, \
 609         { "proc_low_pri_io", CTLTYPE_INT }, \
 610         { "low_pri_window", CTLTYPE_INT }, \
 611         { "low_pri_delay", CTLTYPE_INT }, \
 612         { "posix", CTLTYPE_NODE }, \
 613         { "usrstack64", CTLTYPE_QUAD }, \
 614         { "nx", CTLTYPE_INT }, \
 615         { "tfp", CTLTYPE_NODE }, \
 616         { "procname", CTLTYPE_STRING }, \
 617         { "threadsigaltstack", CTLTYPE_INT }, \
 618         { "speculative_reads_disabled", CTLTYPE_INT }, \
 619         { "osversion", CTLTYPE_STRING }, \
 620         { "safeboot", CTLTYPE_INT }, \
 621         { "lctx", CTLTYPE_NODE }, \
 622         { "rage_vnode", CTLTYPE_INT }, \
 623         { "tty", CTLTYPE_NODE },        \
 624         { "check_openevt", CTLTYPE_INT }, \
 625         { "thread_name", CTLTYPE_STRING } \
 626 }
 627
 628 /*
 629  * CTL_VFS identifiers
 630  */
 631 #define CTL_VFS_NAMES { \
 632         { "vfsconf", CTLTYPE_STRUCT } \
 633 }
 634
 635 /*
 636  * KERN_PROC subtypes
 637  */
 638 #define KERN_PROC_ALL           0       /* everything */
 639 #define KERN_PROC_PID           1       /* by process id */
 640 #define KERN_PROC_PGRP          2       /* by process group id */
 641 #define KERN_PROC_SESSION       3       /* by session of pid */
 642 #define KERN_PROC_TTY           4       /* by controlling tty */
 643 #define KERN_PROC_UID           5       /* by effective uid */
 644 #define KERN_PROC_RUID          6       /* by real uid */
 645 #define KERN_PROC_LCID          7       /* by login context id */
 646
 647 /*
 648  * KERN_LCTX subtypes
 649  */
 650 #define KERN_LCTX_ALL           0       /* everything */
 651 #define KERN_LCTX_LCID          1       /* by login context id */
 652
 653
 654 #if defined(XNU_KERNEL_PRIVATE) || !defined(KERNEL)
 655 /*
 656  * KERN_PROC subtype ops return arrays of augmented proc structures:
 657  */
 658
 659 struct _pcred {
 660         char    pc_lock[72];            /* opaque content */
 661         struct  ucred *pc_ucred;        /* Current credentials. */
 662         uid_t   p_ruid;                 /* Real user id. */
 663         uid_t   p_svuid;                /* Saved effective user id. */
 664         gid_t   p_rgid;                 /* Real group id. */
 665         gid_t   p_svgid;                /* Saved effective group id. */
 666         int     p_refcnt;               /* Number of references. */
 667 };
 668
 669 struct _ucred {
 670         int32_t cr_ref;                 /* reference count */
 671         uid_t   cr_uid;                 /* effective user id */
 672         short   cr_ngroups;             /* number of groups */
 673         gid_t   cr_groups[NGROUPS];     /* groups */
 674 };
 675
 676 struct kinfo_proc {
 677         struct  extern_proc kp_proc;                    /* proc structure */
 678         struct  eproc {
 679                 struct  proc *e_paddr;          /* address of proc */
 680                 struct  session *e_sess;        /* session pointer */
 681                 struct  _pcred e_pcred;         /* process credentials */
 682                 struct  _ucred e_ucred;         /* current credentials */
 683                 struct   vmspace e_vm;          /* address space */
 684                 pid_t   e_ppid;                 /* parent process id */
 685                 pid_t   e_pgid;                 /* process group id */
 686                 short   e_jobc;                 /* job control counter */
 687                 dev_t   e_tdev;                 /* controlling tty dev */
 688                 pid_t   e_tpgid;                /* tty process group id */
 689                 struct  session *e_tsess;       /* tty session pointer */
 690 #define WMESGLEN        7
 691                 char    e_wmesg[WMESGLEN+1];    /* wchan message */
 692                 segsz_t e_xsize;                /* text size */
 693                 short   e_xrssize;              /* text rss */
 694                 short   e_xccount;              /* text references */
 695                 short   e_xswrss;
 696                 int32_t e_flag;
 697 #define EPROC_CTTY      0x01    /* controlling tty vnode active */
 698 #define EPROC_SLEADER   0x02    /* session leader */
 699 #define COMAPT_MAXLOGNAME       12
 700                 char    e_login[COMAPT_MAXLOGNAME];     /* short setlogin() name */
 701 #if CONFIG_LCTX
 702                 pid_t   e_lcid;
 703                 int32_t e_spare[3];
 704 #else
 705                 int32_t e_spare[4];
 706 #endif
 707         } kp_eproc;
 708 };
 709
 710 struct kinfo_lctx {
 711         pid_t   id;     /* Login Context ID */
 712         int     mc;     /* Member Count */
 713 };
 714
 715 #endif /* defined(XNU_KERNEL_PRIVATE) || !defined(KERNEL) */
 716
 717 #ifdef BSD_KERNEL_PRIVATE
 718 #include <sys/proc_internal.h>
 719
 720 /* LP64 version of _pcred.  all pointers
 721  * grow when we're dealing with a 64-bit process.
 722  * WARNING - keep in sync with _pcred
 723  */
 724
 725 struct user32_pcred {
 726         char    pc_lock[72];            /* opaque content */
 727         user32_addr_t   pc_ucred;       /* Current credentials. */
 728         uid_t   p_ruid;                 /* Real user id. */
 729         uid_t   p_svuid;                /* Saved effective user id. */
 730         gid_t   p_rgid;                 /* Real group id. */
 731         gid_t   p_svgid;                /* Saved effective group id. */
 732         int     p_refcnt;               /* Number of references. */
 733 };
 734 struct user64_pcred {
 735         char    pc_lock[72];            /* opaque content */
 736         user64_addr_t   pc_ucred;       /* Current credentials. */
 737         uid_t   p_ruid;                 /* Real user id. */
 738         uid_t   p_svuid;                /* Saved effective user id. */
 739         gid_t   p_rgid;                 /* Real group id. */
 740         gid_t   p_svgid;                /* Saved effective group id. */
 741         int     p_refcnt;               /* Number of references. */
 742 };
 743
 744 /* LP64 version of kinfo_proc.  all pointers
 745  * grow when we're dealing with a 64-bit process.
 746  * WARNING - keep in sync with kinfo_proc
 747  */
 748 struct user32_kinfo_proc {
 749         struct  user32_extern_proc kp_proc;     /* proc structure */
 750         struct  user32_eproc {
 751                 user32_addr_t e_paddr;          /* address of proc */
 752                 user32_addr_t e_sess;                   /* session pointer */
 753                 struct  user32_pcred e_pcred;           /* process credentials */
 754                 struct  _ucred e_ucred;         /* current credentials */
 755                 struct  user32_vmspace e_vm; /* address space */
 756                 pid_t   e_ppid;                 /* parent process id */
 757                 pid_t   e_pgid;                 /* process group id */
 758                 short   e_jobc;                 /* job control counter */
 759                 dev_t   e_tdev;                 /* controlling tty dev */
 760                 pid_t   e_tpgid;                /* tty process group id */
 761                 user32_addr_t   e_tsess;        /* tty session pointer */
 762                 char    e_wmesg[WMESGLEN+1];    /* wchan message */
 763                 segsz_t e_xsize;                /* text size */
 764                 short   e_xrssize;              /* text rss */
 765                 short   e_xccount;              /* text references */
 766                 short   e_xswrss;
 767                 int32_t e_flag;
 768                 char    e_login[COMAPT_MAXLOGNAME];     /* short setlogin() name */
 769 #if CONFIG_LCTX
 770                 pid_t   e_lcid;
 771                 int32_t e_spare[3];
 772 #else
 773                 int32_t e_spare[4];
 774 #endif
 775         } kp_eproc;
 776 };
 777 struct user64_kinfo_proc {
 778         struct  user64_extern_proc kp_proc;     /* proc structure */
 779         struct  user64_eproc {
 780                 user_addr_t e_paddr;            /* address of proc */
 781                 user_addr_t e_sess;                     /* session pointer */
 782                 struct  user64_pcred e_pcred;           /* process credentials */
 783                 struct  _ucred e_ucred;         /* current credentials */
 784                 struct   user_vmspace e_vm; /* address space */
 785                 pid_t   e_ppid;                 /* parent process id */
 786                 pid_t   e_pgid;                 /* process group id */
 787                 short   e_jobc;                 /* job control counter */
 788                 dev_t   e_tdev;                 /* controlling tty dev */
 789                 pid_t   e_tpgid;                /* tty process group id */
 790                 user64_addr_t   e_tsess __attribute((aligned(8)));      /* tty session pointer */
 791                 char    e_wmesg[WMESGLEN+1];    /* wchan message */
 792                 segsz_t e_xsize;                /* text size */
 793                 short   e_xrssize;              /* text rss */
 794                 short   e_xccount;              /* text references */
 795                 short   e_xswrss;
 796                 int32_t e_flag;
 797                 char    e_login[COMAPT_MAXLOGNAME];     /* short setlogin() name */
 798 #if CONFIG_LCTX
 799                 pid_t   e_lcid;
 800                 int32_t e_spare[3];
 801 #else
 802                 int32_t e_spare[4];
 803 #endif
 804         } kp_eproc;
 805 };
 806
 807 #endif  /* BSD_KERNEL_PRIVATE */
 808
 809 /*
 810  * KERN_IPC identifiers
 811  */
 812 #define KIPC_MAXSOCKBUF         1       /* int: max size of a socket buffer */
 813 #define KIPC_SOCKBUF_WASTE      2       /* int: wastage factor in sockbuf */
 814 #define KIPC_SOMAXCONN          3       /* int: max length of connection q */
 815 #define KIPC_MAX_LINKHDR        4       /* int: max length of link header */
 816 #define KIPC_MAX_PROTOHDR       5       /* int: max length of network header */
 817 #define KIPC_MAX_HDR            6       /* int: max total length of headers */
 818 #define KIPC_MAX_DATALEN        7       /* int: max length of data? */
 819 #define KIPC_MBSTAT             8       /* struct: mbuf usage statistics */
 820 #define KIPC_NMBCLUSTERS        9       /* int: maximum mbuf clusters */
 821 #define KIPC_SOQLIMITCOMPAT     10      /* int: socket queue limit */
 822
 823 /*
 824  * CTL_VM identifiers
 825  */
 826 #define VM_METER        1               /* struct vmmeter */
 827 #define VM_LOADAVG      2               /* struct loadavg */
 828 /*
 829  * Note: "3" was skipped sometime ago and should probably remain unused
 830  * to avoid any new entry from being accepted by older kernels...
 831  */
 832 #define VM_MACHFACTOR   4               /* struct loadavg with mach factor*/
 833 #define VM_SWAPUSAGE    5               /* total swap usage */
 834 #define VM_MAXID        6               /* number of valid vm ids */
 835
 836 #define CTL_VM_NAMES { \
 837         { 0, 0 }, \
 838         { "vmmeter", CTLTYPE_STRUCT }, \
 839         { "loadavg", CTLTYPE_STRUCT }, \
 840         { 0, 0 }, /* placeholder for "3" (see comment above) */ \
 841         { "dummy", CTLTYPE_INT }, \
 842         { "swapusage", CTLTYPE_STRUCT } \
 843 }
 844
 845 struct xsw_usage {
 846         u_int64_t       xsu_total;
 847         u_int64_t       xsu_avail;
 848         u_int64_t       xsu_used;
 849         u_int32_t       xsu_pagesize;
 850         boolean_t       xsu_encrypted;
 851 };
 852
 853 #ifdef __APPLE_API_PRIVATE
 854 /* Load average structure.  Use of fixpt_t assume <sys/types.h> in scope. */
 855 /* XXX perhaps we should protect fixpt_t, and define it here (or discard it) */
 856 struct loadavg {
 857         fixpt_t ldavg[3];
 858         long    fscale;
 859 };
 860 extern struct loadavg averunnable;
 861 #define LSCALE  1000            /* scaling for "fixed point" arithmetic */
 862
 863 #ifdef BSD_KERNEL_PRIVATE
 864
 865 struct user32_loadavg {
 866         fixpt_t ldavg[3];
 867     user32_long_t       fscale;
 868 };
 869
 870 struct user64_loadavg {
 871         fixpt_t ldavg[3];
 872     user64_long_t       fscale;
 873 };
 874
 875 #endif  /* BSD_KERNEL_PRIVATE */
 876 #endif /* __APPLE_API_PRIVATE */
 877
 878
 879 /*
 880  * CTL_HW identifiers
 881  */
 882 #define HW_MACHINE       1              /* string: machine class */
 883 #define HW_MODEL         2              /* string: specific machine model */
 884 #define HW_NCPU          3              /* int: number of cpus */
 885 #define HW_BYTEORDER     4              /* int: machine byte order */
 886 #define HW_PHYSMEM       5              /* int: total memory */
 887 #define HW_USERMEM       6              /* int: non-kernel memory */
 888 #define HW_PAGESIZE      7              /* int: software page size */
 889 #define HW_DISKNAMES     8              /* strings: disk drive names */
 890 #define HW_DISKSTATS     9              /* struct: diskstats[] */
 891 #define HW_EPOCH        10              /* int: 0 for Legacy, else NewWorld */
 892 #define HW_FLOATINGPT   11              /* int: has HW floating point? */
 893 #define HW_MACHINE_ARCH 12              /* string: machine architecture */
 894 #define HW_VECTORUNIT   13              /* int: has HW vector unit? */
 895 #define HW_BUS_FREQ     14              /* int: Bus Frequency */
 896 #define HW_CPU_FREQ     15              /* int: CPU Frequency */
 897 #define HW_CACHELINE    16              /* int: Cache Line Size in Bytes */
 898 #define HW_L1ICACHESIZE 17              /* int: L1 I Cache Size in Bytes */
 899 #define HW_L1DCACHESIZE 18              /* int: L1 D Cache Size in Bytes */
 900 #define HW_L2SETTINGS   19              /* int: L2 Cache Settings */
 901 #define HW_L2CACHESIZE  20              /* int: L2 Cache Size in Bytes */
 902 #define HW_L3SETTINGS   21              /* int: L3 Cache Settings */
 903 #define HW_L3CACHESIZE  22              /* int: L3 Cache Size in Bytes */
 904 #define HW_TB_FREQ      23              /* int: Bus Frequency */
 905 #define HW_MEMSIZE      24              /* uint64_t: physical ram size */
 906 #define HW_AVAILCPU     25              /* int: number of available CPUs */
 907 #define HW_MAXID        26              /* number of valid hw ids */
 908
 909 #define CTL_HW_NAMES { \
 910         { 0, 0 }, \
 911         { "machine", CTLTYPE_STRING }, \
 912         { "model", CTLTYPE_STRING }, \
 913         { "ncpu", CTLTYPE_INT }, \
 914         { "byteorder", CTLTYPE_INT }, \
 915         { "physmem", CTLTYPE_INT }, \
 916         { "usermem", CTLTYPE_INT }, \
 917         { "pagesize", CTLTYPE_INT }, \
 918         { "disknames", CTLTYPE_STRUCT }, \
 919         { "diskstats", CTLTYPE_STRUCT }, \
 920         { "epoch", CTLTYPE_INT }, \
 921         { "floatingpoint", CTLTYPE_INT }, \
 922         { "machinearch", CTLTYPE_STRING }, \
 923         { "vectorunit", CTLTYPE_INT }, \
 924         { "busfrequency", CTLTYPE_INT }, \
 925         { "cpufrequency", CTLTYPE_INT }, \
 926         { "cachelinesize", CTLTYPE_INT }, \
 927         { "l1icachesize", CTLTYPE_INT }, \
 928         { "l1dcachesize", CTLTYPE_INT }, \
 929         { "l2settings", CTLTYPE_INT }, \
 930         { "l2cachesize", CTLTYPE_INT }, \
 931         { "l3settings", CTLTYPE_INT }, \
 932         { "l3cachesize", CTLTYPE_INT }, \
 933         { "tbfrequency", CTLTYPE_INT }, \
 934         { "memsize", CTLTYPE_QUAD }, \
 935         { "availcpu", CTLTYPE_INT } \
 936 }
 937
 938 /*
 939  * XXX This information should be moved to the man page.
 940  *
 941  * These are the support HW selectors for sysctlbyname.  Parameters that are byte counts or frequencies are 64 bit numbers.
 942  * All other parameters are 32 bit numbers.
 943  *
 944  *   hw.memsize                - The number of bytes of physical memory in the system.
 945  *
 946  *   hw.ncpu                   - The maximum number of processors that could be available this boot.
 947  *                               Use this value for sizing of static per processor arrays; i.e. processor load statistics.
 948  *
 949  *   hw.activecpu              - The number of processors currently available for executing threads.
 950  *                               Use this number to determine the number threads to create in SMP aware applications.
 951  *                               This number can change when power management modes are changed.
 952  *
 953  *   hw.physicalcpu            - The number of physical processors available in the current power management mode.
 954  *   hw.physicalcpu_max        - The maximum number of physical processors that could be available this boot
 955  *
 956  *   hw.logicalcpu             - The number of logical processors available in the current power management mode.
 957  *   hw.logicalcpu_max         - The maximum number of logical processors that could be available this boot
 958  *
 959  *   hw.tbfrequency            - This gives the time base frequency used by the OS and is the basis of all timing services.
 960  *                               In general is is better to use mach's or higher level timing services, but this value
 961  *                               is needed to convert the PPC Time Base registers to real time.
 962  *
 963  *   hw.cpufrequency           - These values provide the current, min and max cpu frequency.  The min and max are for
 964  *   hw.cpufrequency_max       - all power management modes.  The current frequency is the max frequency in the current mode.
 965  *   hw.cpufrequency_min       - All frequencies are in Hz.
 966  *
 967  *   hw.busfrequency           - These values provide the current, min and max bus frequency.  The min and max are for
 968  *   hw.busfrequency_max       - all power management modes.  The current frequency is the max frequency in the current mode.
 969  *   hw.busfrequency_min       - All frequencies are in Hz.
 970  *
 971  *   hw.cputype                - These values provide the mach-o cpu type and subtype.  A complete list is in <mach/machine.h>
 972  *   hw.cpusubtype             - These values should be used to determine what processor family the running cpu is from so that
 973  *                               the best binary can be chosen, or the best dynamic code generated.  They should not be used
 974  *                               to determine if a given processor feature is available.
 975  *   hw.cputhreadtype          - This value will be present if the processor supports threads.  Like hw.cpusubtype this selector
 976  *                               should not be used to infer features, and only used to name the processors thread architecture.
 977  *                               The values are defined in <mach/machine.h>
 978  *
 979  *   hw.byteorder              - Gives the byte order of the processor.  4321 for big endian, 1234 for little.
 980  *
 981  *   hw.pagesize               - Gives the size in bytes of the pages used by the processor and VM system.
 982  *
 983  *   hw.cachelinesize          - Gives the size in bytes of the processor's cache lines.
 984  *                               This value should be use to control the strides of loops that use cache control instructions
 985  *                               like dcbz, dcbt or dcbst.
 986  *
 987  *   hw.l1dcachesize           - These values provide the size in bytes of the L1, L2 and L3 caches.  If a cache is not present
 988  *   hw.l1icachesize           - then the selector will return and error.
 989  *   hw.l2cachesize            -
 990  *   hw.l3cachesize            -
 991  *
 992  *   hw.packages               - Gives the number of processor packages.
 993  *
 994  * These are the selectors for optional processor features for specific processors.  Selectors that return errors are not support
 995  * on the system.  Supported features will return 1 if they are recommended or 0 if they are supported but are not expected to help .
 996  * performance.  Future versions of these selectors may return larger values as necessary so it is best to test for non zero.
 997  *
 998  * For PowerPC:
 999  *
1000  *   hw.optional.floatingpoint - Floating Point Instructions
1001  *   hw.optional.altivec       - AltiVec Instructions
1002  *   hw.optional.graphicsops   - Graphics Operations
1003  *   hw.optional.64bitops      - 64-bit Instructions
1004  *   hw.optional.fsqrt         - HW Floating Point Square Root Instruction
1005  *   hw.optional.stfiwx        - Store Floating Point as Integer Word Indexed Instructions
1006  *   hw.optional.dcba          - Data Cache Block Allocate Instruction
1007  *   hw.optional.datastreams   - Data Streams Instructions
1008  *   hw.optional.dcbtstreams   - Data Cache Block Touch Steams Instruction Form
1009  *
1010  * For x86 Architecture:
1011  *
1012  *   hw.optional.floatingpoint     - Floating Point Instructions
1013  *   hw.optional.mmx               - Original MMX vector instructions
1014  *   hw.optional.sse               - Streaming SIMD Extensions
1015  *   hw.optional.sse2              - Streaming SIMD Extensions 2
1016  *   hw.optional.sse3              - Streaming SIMD Extensions 3
1017  *   hw.optional.supplementalsse3  - Supplemental Streaming SIMD Extensions 3
1018  *   hw.optional.x86_64            - 64-bit support
1019  */
1020
1021
1022 /*
1023  * CTL_USER definitions
1024  */
1025 #define USER_CS_PATH             1      /* string: _CS_PATH */
1026 #define USER_BC_BASE_MAX         2      /* int: BC_BASE_MAX */
1027 #define USER_BC_DIM_MAX          3      /* int: BC_DIM_MAX */
1028 #define USER_BC_SCALE_MAX        4      /* int: BC_SCALE_MAX */
1029 #define USER_BC_STRING_MAX       5      /* int: BC_STRING_MAX */
1030 #define USER_COLL_WEIGHTS_MAX    6      /* int: COLL_WEIGHTS_MAX */
1031 #define USER_EXPR_NEST_MAX       7      /* int: EXPR_NEST_MAX */
1032 #define USER_LINE_MAX            8      /* int: LINE_MAX */
1033 #define USER_RE_DUP_MAX          9      /* int: RE_DUP_MAX */
1034 #define USER_POSIX2_VERSION     10      /* int: POSIX2_VERSION */
1035 #define USER_POSIX2_C_BIND      11      /* int: POSIX2_C_BIND */
1036 #define USER_POSIX2_C_DEV       12      /* int: POSIX2_C_DEV */
1037 #define USER_POSIX2_CHAR_TERM   13      /* int: POSIX2_CHAR_TERM */
1038 #define USER_POSIX2_FORT_DEV    14      /* int: POSIX2_FORT_DEV */
1039 #define USER_POSIX2_FORT_RUN    15      /* int: POSIX2_FORT_RUN */
1040 #define USER_POSIX2_LOCALEDEF   16      /* int: POSIX2_LOCALEDEF */
1041 #define USER_POSIX2_SW_DEV      17      /* int: POSIX2_SW_DEV */
1042 #define USER_POSIX2_UPE         18      /* int: POSIX2_UPE */
1043 #define USER_STREAM_MAX         19      /* int: POSIX2_STREAM_MAX */
1044 #define USER_TZNAME_MAX         20      /* int: POSIX2_TZNAME_MAX */
1045 #define USER_MAXID              21      /* number of valid user ids */
1046
1047 #define CTL_USER_NAMES { \
1048         { 0, 0 }, \
1049         { "cs_path", CTLTYPE_STRING }, \
1050         { "bc_base_max", CTLTYPE_INT }, \
1051         { "bc_dim_max", CTLTYPE_INT }, \
1052         { "bc_scale_max", CTLTYPE_INT }, \
1053         { "bc_string_max", CTLTYPE_INT }, \
1054         { "coll_weights_max", CTLTYPE_INT }, \
1055         { "expr_nest_max", CTLTYPE_INT }, \
1056         { "line_max", CTLTYPE_INT }, \
1057         { "re_dup_max", CTLTYPE_INT }, \
1058         { "posix2_version", CTLTYPE_INT }, \
1059         { "posix2_c_bind", CTLTYPE_INT }, \
1060         { "posix2_c_dev", CTLTYPE_INT }, \
1061         { "posix2_char_term", CTLTYPE_INT }, \
1062         { "posix2_fort_dev", CTLTYPE_INT }, \
1063         { "posix2_fort_run", CTLTYPE_INT }, \
1064         { "posix2_localedef", CTLTYPE_INT }, \
1065         { "posix2_sw_dev", CTLTYPE_INT }, \
1066         { "posix2_upe", CTLTYPE_INT }, \
1067         { "stream_max", CTLTYPE_INT }, \
1068         { "tzname_max", CTLTYPE_INT } \
1069 }
1070
1071
1072
1073 /*
1074  * CTL_DEBUG definitions
1075  *
1076  * Second level identifier specifies which debug variable.
1077  * Third level identifier specifies which stucture component.
1078  */
1079 #define CTL_DEBUG_NAME          0       /* string: variable name */
1080 #define CTL_DEBUG_VALUE         1       /* int: variable value */
1081 #define CTL_DEBUG_MAXID         20
1082
1083
1084 #if (CTL_MAXID != 9) || (KERN_MAXID != 72) || (VM_MAXID != 6) || (HW_MAXID != 26) || (USER_MAXID != 21) || (CTL_DEBUG_MAXID != 20)
1085 #error Use the SYSCTL_*() macros and OID_AUTO instead!
1086 #endif
1087
1088
1089 #ifdef  KERNEL
1090 #if DEBUG
1091 /*
1092  * CTL_DEBUG variables.
1093  *
1094  * These are declared as separate variables so that they can be
1095  * individually initialized at the location of their associated
1096  * variable. The loader prevents multiple use by issuing errors
1097  * if a variable is initialized in more than one place. They are
1098  * aggregated into an array in debug_sysctl(), so that it can
1099  * conveniently locate them when querried. If more debugging
1100  * variables are added, they must also be declared here and also
1101  * entered into the array.
1102  */
1103 struct ctldebug {
1104         char    *debugname;     /* name of debugging variable */
1105         int     *debugvar;      /* pointer to debugging variable */
1106 };
1107 extern struct ctldebug debug0, debug1, debug2, debug3, debug4;
1108 extern struct ctldebug debug5, debug6, debug7, debug8, debug9;
1109 extern struct ctldebug debug10, debug11, debug12, debug13, debug14;
1110 extern struct ctldebug debug15, debug16, debug17, debug18, debug19;
1111 #endif  /* DEBUG */
1112
1113 #ifdef BSD_KERNEL_PRIVATE
1114 extern char     machine[];
1115 extern char     osrelease[];
1116 extern char     ostype[];
1117 extern char     osversion[];
1118
1119 struct linker_set;
1120
1121 void    sysctl_register_set(const char *set);
1122 void    sysctl_unregister_set(const char *set);
1123 void    sysctl_mib_init(void) __attribute__((section("__TEXT, initcode")));
1124 int     kernel_sysctl(struct proc *p, int *name, u_int namelen, void *old,
1125                       size_t *oldlenp, void *newp, size_t newlen);
1126 int     userland_sysctl(struct proc *p, int *name, u_int namelen, user_addr_t old,
1127                         size_t *oldlenp, user_addr_t newp, size_t newlen,
1128                         size_t *retval);
1129
1130 /*
1131  * Internal sysctl function calling convention:
1132  *
1133  *      (*sysctlfn)(name, namelen, oldval, oldlenp, newval, newlen);
1134  *
1135  * The name parameter points at the next component of the name to be
1136  * interpreted.  The namelen parameter is the number of integers in
1137  * the name.
1138  */
1139 typedef int (sysctlfn)
1140    (int *, u_int, user_addr_t, size_t *, user_addr_t, size_t, struct proc *);
1141
1142 int sysctl_int(user_addr_t, size_t *, user_addr_t, size_t, int *);
1143 int sysctl_rdint(user_addr_t, size_t *, user_addr_t, int);
1144 int sysctl_quad(user_addr_t, size_t *, user_addr_t, size_t, quad_t *);
1145 int sysctl_rdquad(user_addr_t, size_t *, user_addr_t, quad_t);
1146 int sysctl_string(user_addr_t, size_t *, user_addr_t, size_t, char *, int);
1147 int sysctl_trstring(user_addr_t, size_t *, user_addr_t, size_t, char *, int);
1148 int sysctl_rdstring(user_addr_t, size_t *, user_addr_t, char *);
1149 int sysctl_rdstruct(user_addr_t, size_t *, user_addr_t, void *, int);
1150
1151 /* XXX should be in <sys/sysproto.h>, but not a real system call */
1152 struct sysctl_args;
1153 int new_sysctl(struct proc *, struct sysctl_args *);
1154
1155 void sysctl_register_all(void);
1156
1157 #endif /* BSD_KERNEL_PRIVATE */
1158 #else   /* !KERNEL */
1159
1160 __BEGIN_DECLS
1161 int     sysctl(int *, u_int, void *, size_t *, void *, size_t);
1162 int     sysctlbyname(const char *, void *, size_t *, void *, size_t);
1163 int     sysctlnametomib(const char *, int *, size_t *);
1164 __END_DECLS
1165
1166 #endif  /* KERNEL */
1167
1168
1169 #endif /* SYSCTL_DEF_ENABLED */
1170
1171
1172 #endif  /* !_SYS_SYSCTL_H_ */