bsd/sys/sysctl.h

   1 /*
   2  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  23 /*
  24  * Copyright (c) 1989, 1993
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * This code is derived from software contributed to Berkeley by
  28  * Mike Karels at Berkeley Software Design, Inc.
  29  *
  30  * Redistribution and use in source and binary forms, with or without
  31  * modification, are permitted provided that the following conditions
  32  * are met:
  33  * 1. Redistributions of source code must retain the above copyright
  34  *    notice, this list of conditions and the following disclaimer.
  35  * 2. Redistributions in binary form must reproduce the above copyright
  36  *    notice, this list of conditions and the following disclaimer in the
  37  *    documentation and/or other materials provided with the distribution.
  38  * 3. All advertising materials mentioning features or use of this software
  39  *    must display the following acknowledgement:
  40  *      This product includes software developed by the University of
  41  *      California, Berkeley and its contributors.
  42  * 4. Neither the name of the University nor the names of its contributors
  43  *    may be used to endorse or promote products derived from this software
  44  *    without specific prior written permission.
  45  *
  46  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  47  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  48  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  49  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  50  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  51  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  52  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  53  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  54  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  55  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  56  * SUCH DAMAGE.
  57  *
  58  *      @(#)sysctl.h    8.1 (Berkeley) 6/2/93
  59  */
  60
  61 #ifndef _SYS_SYSCTL_H_
  62 #define _SYS_SYSCTL_H_
  63
  64 /*
  65  * These are for the eproc structure defined below.
  66  */
  67 #include <sys/appleapiopts.h>
  68 #ifndef KERNEL
  69 #include <sys/time.h>
  70 #include <sys/ucred.h>
  71 #endif
  72
  73 #include <sys/vm.h>
  74 #include <sys/proc.h>
  75 #include <sys/linker_set.h>
  76
  77 /*
  78  * Definitions for sysctl call.  The sysctl call uses a hierarchical name
  79  * for objects that can be examined or modified.  The name is expressed as
  80  * a sequence of integers.  Like a file path name, the meaning of each
  81  * component depends on its place in the hierarchy.  The top-level and kern
  82  * identifiers are defined here, and other identifiers are defined in the
  83  * respective subsystem header files.
  84  */
  85
  86 #define CTL_MAXNAME     12      /* largest number of components supported */
  87
  88 /*
  89  * Each subsystem defined by sysctl defines a list of variables
  90  * for that subsystem. Each name is either a node with further
  91  * levels defined below it, or it is a leaf of some particular
  92  * type given below. Each sysctl level defines a set of name/type
  93  * pairs to be used by sysctl(1) in manipulating the subsystem.
  94  */
  95 struct ctlname {
  96         char    *ctl_name;      /* subsystem name */
  97         int     ctl_type;       /* type of name */
  98 };
  99
 100 #define CTLTYPE         0xf     /* Mask for the type */
 101 #define CTLTYPE_NODE    1       /* name is a node */
 102 #define CTLTYPE_INT     2       /* name describes an integer */
 103 #define CTLTYPE_STRING  3       /* name describes a string */
 104 #define CTLTYPE_QUAD    4       /* name describes a 64-bit number */
 105 #define CTLTYPE_OPAQUE  5       /* name describes a structure */
 106 #define CTLTYPE_STRUCT  CTLTYPE_OPAQUE  /* name describes a structure */
 107
 108 #define CTLFLAG_RD      0x80000000      /* Allow reads of variable */
 109 #define CTLFLAG_WR      0x40000000      /* Allow writes to the variable */
 110 #define CTLFLAG_RW      (CTLFLAG_RD|CTLFLAG_WR)
 111 #define CTLFLAG_NOLOCK  0x20000000      /* XXX Don't Lock */
 112 #define CTLFLAG_ANYBODY 0x10000000      /* All users can set this var */
 113 #define CTLFLAG_SECURE  0x08000000      /* Permit set only if securelevel<=0 */
 114
 115 /*
 116  * USE THIS instead of a hardwired number from the categories below
 117  * to get dynamically assigned sysctl entries using the linker-set
 118  * technology. This is the way nearly all new sysctl variables should
 119  * be implemented.
 120  * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, "");
 121  */
 122 #define OID_AUTO        (-1)
 123
 124 #ifdef KERNEL
 125 #ifdef __APPLE_API_UNSTABLE
 126 #define SYSCTL_HANDLER_ARGS (struct sysctl_oid *oidp, void *arg1, int arg2, \
 127         struct sysctl_req *req)
 128
 129 /*
 130  * This describes the access space for a sysctl request.  This is needed
 131  * so that we can use the interface from the kernel or from user-space.
 132  */
 133 struct sysctl_req {
 134         struct proc     *p;
 135         int             lock;
 136         void            *oldptr;
 137         size_t          oldlen;
 138         size_t          oldidx;
 139         int             (*oldfunc)(struct sysctl_req *, const void *, size_t);
 140         void            *newptr;
 141         size_t          newlen;
 142         size_t          newidx;
 143         int             (*newfunc)(struct sysctl_req *, void *, size_t);
 144 };
 145
 146 SLIST_HEAD(sysctl_oid_list, sysctl_oid);
 147
 148 /*
 149  * This describes one "oid" in the MIB tree.  Potentially more nodes can
 150  * be hidden behind it, expanded by the handler.
 151  */
 152 struct sysctl_oid {
 153         struct sysctl_oid_list *oid_parent;
 154         SLIST_ENTRY(sysctl_oid) oid_link;
 155         int             oid_number;
 156         int             oid_kind;
 157         void            *oid_arg1;
 158         int             oid_arg2;
 159         const char      *oid_name;
 160         int             (*oid_handler) SYSCTL_HANDLER_ARGS;
 161         const char      *oid_fmt;
 162 };
 163
 164 #define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l)
 165 #define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l)
 166
 167 int sysctl_handle_int SYSCTL_HANDLER_ARGS;
 168 int sysctl_handle_long SYSCTL_HANDLER_ARGS;
 169 int sysctl_handle_intptr SYSCTL_HANDLER_ARGS;
 170 int sysctl_handle_string SYSCTL_HANDLER_ARGS;
 171 int sysctl_handle_opaque SYSCTL_HANDLER_ARGS;
 172
 173 /*
 174  * These functions are used to add/remove an oid from the mib.
 175  */
 176 void sysctl_register_oid(struct sysctl_oid *oidp);
 177 void sysctl_unregister_oid(struct sysctl_oid *oidp);
 178
 179 /* Declare an oid to allow child oids to be added to it. */
 180 #define SYSCTL_DECL(name)                                       \
 181         extern struct sysctl_oid_list sysctl_##name##_children
 182
 183 /* This constructs a "raw" MIB oid. */
 184 #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
 185         struct sysctl_oid sysctl_##parent##_##name = {           \
 186                 &sysctl_##parent##_children, { 0 },                      \
 187                 nbr, kind, a1, a2, #name, handler, fmt };
 188
 189
 190 /* This constructs a node from which other oids can hang. */
 191 #define SYSCTL_NODE(parent, nbr, name, access, handler, descr)              \
 192         struct sysctl_oid_list sysctl_##parent##_##name##_children;         \
 193         SYSCTL_OID(parent, nbr, name, CTLTYPE_NODE|access,                  \
 194                    (void*)&sysctl_##parent##_##name##_children, 0, handler, \
 195                    "N", descr);
 196
 197 /* Oid for a string.  len can be 0 to indicate '\0' termination. */
 198 #define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \
 199         SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|access, \
 200                 arg, len, sysctl_handle_string, "A", descr)
 201
 202 /* Oid for an int.  If ptr is NULL, val is returned. */
 203 #define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \
 204         SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|access, \
 205                 ptr, val, sysctl_handle_int, "I", descr)
 206
 207 /* Oid for a long.  The pointer must be non NULL. */
 208 #define SYSCTL_LONG(parent, nbr, name, access, ptr, descr) \
 209         SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|access, \
 210                 ptr, 0, sysctl_handle_long, "L", descr)
 211
 212 /* Oid for an opaque object.  Specified by a pointer and a length. */
 213 #define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \
 214         SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|access, \
 215                 ptr, len, sysctl_handle_opaque, fmt, descr)
 216
 217 /* Oid for a struct.  Specified by a pointer and a type. */
 218 #define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \
 219         SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|access, \
 220                 ptr, sizeof(struct type), sysctl_handle_opaque, \
 221                 "S," #type, descr)
 222
 223 /* Oid for a procedure.  Specified by a pointer and an arg. */
 224 #define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
 225         SYSCTL_OID(parent, nbr, name, access, \
 226                 ptr, arg, handler, fmt, descr)
 227 #endif /* __APPLE_API_UNSTABLE */
 228 #endif /* KERNEL */
 229
 230 /*
 231  * Top-level identifiers
 232  */
 233 #define CTL_UNSPEC      0               /* unused */
 234 #define CTL_KERN        1               /* "high kernel": proc, limits */
 235 #define CTL_VM          2               /* virtual memory */
 236 #define CTL_VFS         3               /* file system, mount type is next */
 237 #define CTL_NET         4               /* network, see socket.h */
 238 #define CTL_DEBUG       5               /* debugging parameters */
 239 #define CTL_HW          6               /* generic cpu/io */
 240 #define CTL_MACHDEP     7               /* machine dependent */
 241 #define CTL_USER        8               /* user-level */
 242 #define CTL_MAXID       9               /* number of valid top-level ids */
 243
 244 #define CTL_NAMES { \
 245         { 0, 0 }, \
 246         { "kern", CTLTYPE_NODE }, \
 247         { "vm", CTLTYPE_NODE }, \
 248         { "vfs", CTLTYPE_NODE }, \
 249         { "net", CTLTYPE_NODE }, \
 250         { "debug", CTLTYPE_NODE }, \
 251         { "hw", CTLTYPE_NODE }, \
 252         { "machdep", CTLTYPE_NODE }, \
 253         { "user", CTLTYPE_NODE }, \
 254 }
 255
 256 /*
 257  * CTL_KERN identifiers
 258  */
 259 #define KERN_OSTYPE              1      /* string: system version */
 260 #define KERN_OSRELEASE           2      /* string: system release */
 261 #define KERN_OSREV               3      /* int: system revision */
 262 #define KERN_VERSION             4      /* string: compile time info */
 263 #define KERN_MAXVNODES           5      /* int: max vnodes */
 264 #define KERN_MAXPROC             6      /* int: max processes */
 265 #define KERN_MAXFILES            7      /* int: max open files */
 266 #define KERN_ARGMAX              8      /* int: max arguments to exec */
 267 #define KERN_SECURELVL           9      /* int: system security level */
 268 #define KERN_HOSTNAME           10      /* string: hostname */
 269 #define KERN_HOSTID             11      /* int: host identifier */
 270 #define KERN_CLOCKRATE          12      /* struct: struct clockrate */
 271 #define KERN_VNODE              13      /* struct: vnode structures */
 272 #define KERN_PROC               14      /* struct: process entries */
 273 #define KERN_FILE               15      /* struct: file entries */
 274 #define KERN_PROF               16      /* node: kernel profiling info */
 275 #define KERN_POSIX1             17      /* int: POSIX.1 version */
 276 #define KERN_NGROUPS            18      /* int: # of supplemental group ids */
 277 #define KERN_JOB_CONTROL        19      /* int: is job control available */
 278 #define KERN_SAVED_IDS          20      /* int: saved set-user/group-ID */
 279 #define KERN_BOOTTIME           21      /* struct: time kernel was booted */
 280 #define KERN_NISDOMAINNAME      22      /* string: YP domain name */
 281 #define KERN_DOMAINNAME         KERN_NISDOMAINNAME
 282 #define KERN_MAXPARTITIONS      23      /* int: number of partitions/disk */
 283 #define KERN_KDEBUG             24      /* int: kernel trace points */
 284 #define KERN_UPDATEINTERVAL     25      /* int: update process sleep time */
 285 #define KERN_OSRELDATE          26      /* int: OS release date */
 286 #define KERN_NTP_PLL            27      /* node: NTP PLL control */
 287 #define KERN_BOOTFILE           28      /* string: name of booted kernel */
 288 #define KERN_MAXFILESPERPROC    29      /* int: max open files per proc */
 289 #define KERN_MAXPROCPERUID      30      /* int: max processes per uid */
 290 #define KERN_DUMPDEV            31      /* dev_t: device to dump on */
 291 #define KERN_IPC                32      /* node: anything related to IPC */
 292 #define KERN_DUMMY              33      /* unused */
 293 #define KERN_PS_STRINGS         34      /* int: address of PS_STRINGS */
 294 #define KERN_USRSTACK           35      /* int: address of USRSTACK */
 295 #define KERN_LOGSIGEXIT         36      /* int: do we log sigexit procs? */
 296 #define KERN_SYMFILE            37      /* string: kernel symbol filename */
 297 #define KERN_PROCARGS           38
 298 #define KERN_PCSAMPLES          39      /* node: pc sampling */
 299 #define KERN_NETBOOT            40      /* int: are we netbooted? 1=yes,0=no */
 300 #define KERN_PANICINFO          41      /* node: panic UI information */
 301 #define KERN_SYSV               42      /* node: panic UI information */
 302 #define KERN_MAXID              43      /* number of valid kern ids */
 303
 304
 305 /* KERN_KDEBUG types */
 306 #define KERN_KDEFLAGS           1
 307 #define KERN_KDDFLAGS           2
 308 #define KERN_KDENABLE           3
 309 #define KERN_KDSETBUF           4
 310 #define KERN_KDGETBUF           5
 311 #define KERN_KDSETUP            6
 312 #define KERN_KDREMOVE           7
 313 #define KERN_KDSETREG           8
 314 #define KERN_KDGETREG           9
 315 #define KERN_KDREADTR           10
 316 #define KERN_KDPIDTR            11
 317 #define KERN_KDTHRMAP           12
 318 /* Don't use 13 as it is overloaded with KERN_VNODE */
 319 #define KERN_KDPIDEX            14
 320 #define KERN_KDSETRTCDEC        15
 321 #define KERN_KDGETENTROPY       16
 322
 323 /* KERN_PCSAMPLES types */
 324 #define KERN_PCDISABLE          1
 325 #define KERN_PCSETBUF           2
 326 #define KERN_PCGETBUF           3
 327 #define KERN_PCSETUP            4
 328 #define KERN_PCREMOVE           5
 329 #define KERN_PCREADBUF          6
 330 #define KERN_PCSETREG           7
 331 #define KERN_PCCOMM             8
 332
 333 /* KERN_PANICINFO types */
 334 #define KERN_PANICINFO_MAXSIZE  1       /* quad: panic UI image size limit */
 335 #define KERN_PANICINFO_IMAGE16  2       /* string: path to the panic UI (16 bit) */
 336 #define KERN_PANICINFO_IMAGE32  3       /* string: path to the panic UI (32 bit) */
 337
 338 /*
 339  * KERN_SYSV identifiers
 340  */
 341 #define KSYSV_SHMMAX            1       /* int: max shared memory segment size (bytes) */
 342 #define KSYSV_SHMMIN            2       /* int: min shared memory segment size (bytes) */
 343 #define KSYSV_SHMMNI            3       /* int: max number of shared memory identifiers */
 344 #define KSYSV_SHMSEG            4       /* int: max shared memory segments per process */
 345 #define KSYSV_SHMALL            5       /* int: max amount of shared memory (pages) */
 346
 347
 348 #define CTL_KERN_NAMES { \
 349         { 0, 0 }, \
 350         { "ostype", CTLTYPE_STRING }, \
 351         { "osrelease", CTLTYPE_STRING }, \
 352         { "osrevision", CTLTYPE_INT }, \
 353         { "version", CTLTYPE_STRING }, \
 354         { "maxvnodes", CTLTYPE_INT }, \
 355         { "maxproc", CTLTYPE_INT }, \
 356         { "maxfiles", CTLTYPE_INT }, \
 357         { "argmax", CTLTYPE_INT }, \
 358         { "securelevel", CTLTYPE_INT }, \
 359         { "hostname", CTLTYPE_STRING }, \
 360         { "hostid", CTLTYPE_INT }, \
 361         { "clockrate", CTLTYPE_STRUCT }, \
 362         { "vnode", CTLTYPE_STRUCT }, \
 363         { "proc", CTLTYPE_STRUCT }, \
 364         { "file", CTLTYPE_STRUCT }, \
 365         { "profiling", CTLTYPE_NODE }, \
 366         { "posix1version", CTLTYPE_INT }, \
 367         { "ngroups", CTLTYPE_INT }, \
 368         { "job_control", CTLTYPE_INT }, \
 369         { "saved_ids", CTLTYPE_INT }, \
 370         { "boottime", CTLTYPE_STRUCT }, \
 371         { "nisdomainname", CTLTYPE_STRING }, \
 372         { "maxpartitions", CTLTYPE_INT }, \
 373         { "kdebug", CTLTYPE_INT }, \
 374         { "update", CTLTYPE_INT }, \
 375         { "osreldate", CTLTYPE_INT }, \
 376         { "ntp_pll", CTLTYPE_NODE }, \
 377         { "bootfile", CTLTYPE_STRING }, \
 378         { "maxfilesperproc", CTLTYPE_INT }, \
 379         { "maxprocperuid", CTLTYPE_INT }, \
 380         { "dumpdev", CTLTYPE_STRUCT }, /* we lie; don't print as int */ \
 381         { "ipc", CTLTYPE_NODE }, \
 382         { "dummy", CTLTYPE_INT }, \
 383         { "ps_strings", CTLTYPE_INT }, \
 384         { "usrstack", CTLTYPE_INT }, \
 385         { "logsigexit", CTLTYPE_INT }, \
 386         { "symfile",CTLTYPE_STRING },\
 387         { "procargs",CTLTYPE_STRUCT },\
 388         { "pcsamples",CTLTYPE_STRUCT },\
 389         { "netboot", CTLTYPE_INT }, \
 390         { "panicinfo", CTLTYPE_NODE }, \
 391         { "sysv", CTLTYPE_NODE } \
 392 }
 393
 394 /*
 395  * CTL_VFS identifiers
 396  */
 397 #define CTL_VFS_NAMES { \
 398         { "vfsconf", CTLTYPE_STRUCT } \
 399 }
 400
 401 /*
 402  * KERN_PROC subtypes
 403  */
 404 #define KERN_PROC_ALL           0       /* everything */
 405 #define KERN_PROC_PID           1       /* by process id */
 406 #define KERN_PROC_PGRP          2       /* by process group id */
 407 #define KERN_PROC_SESSION       3       /* by session of pid */
 408 #define KERN_PROC_TTY           4       /* by controlling tty */
 409 #define KERN_PROC_UID           5       /* by effective uid */
 410 #define KERN_PROC_RUID          6       /* by real uid */
 411
 412 /*
 413  * KERN_PROC subtype ops return arrays of augmented proc structures:
 414  */
 415 #ifdef __APPLE_API_UNSTABLE
 416 struct kinfo_proc {
 417         struct  extern_proc kp_proc;                    /* proc structure */
 418         struct  eproc {
 419                 struct  proc *e_paddr;          /* address of proc */
 420                 struct  session *e_sess;        /* session pointer */
 421                 struct  pcred e_pcred;          /* process credentials */
 422                 struct  ucred e_ucred;          /* current credentials */
 423                 struct   vmspace e_vm;          /* address space */
 424                 pid_t   e_ppid;                 /* parent process id */
 425                 pid_t   e_pgid;                 /* process group id */
 426                 short   e_jobc;                 /* job control counter */
 427                 dev_t   e_tdev;                 /* controlling tty dev */
 428                 pid_t   e_tpgid;                /* tty process group id */
 429                 struct  session *e_tsess;       /* tty session pointer */
 430 #define WMESGLEN        7
 431                 char    e_wmesg[WMESGLEN+1];    /* wchan message */
 432                 segsz_t e_xsize;                /* text size */
 433                 short   e_xrssize;              /* text rss */
 434                 short   e_xccount;              /* text references */
 435                 short   e_xswrss;
 436                 long    e_flag;
 437 #define EPROC_CTTY      0x01    /* controlling tty vnode active */
 438 #define EPROC_SLEADER   0x02    /* session leader */
 439 #define COMAPT_MAXLOGNAME       12
 440                 char    e_login[COMAPT_MAXLOGNAME];     /* short setlogin() name */
 441                 long    e_spare[4];
 442         } kp_eproc;
 443 };
 444 #endif /* __APPLE_API_UNSTABLE */
 445
 446 /*
 447  * KERN_IPC identifiers
 448  */
 449 #define KIPC_MAXSOCKBUF         1       /* int: max size of a socket buffer */
 450 #define KIPC_SOCKBUF_WASTE      2       /* int: wastage factor in sockbuf */
 451 #define KIPC_SOMAXCONN          3       /* int: max length of connection q */
 452 #define KIPC_MAX_LINKHDR        4       /* int: max length of link header */
 453 #define KIPC_MAX_PROTOHDR       5       /* int: max length of network header */
 454 #define KIPC_MAX_HDR            6       /* int: max total length of headers */
 455 #define KIPC_MAX_DATALEN        7       /* int: max length of data? */
 456 #define KIPC_MBSTAT             8       /* struct: mbuf usage statistics */
 457 #define KIPC_NMBCLUSTERS        9       /* int: maximum mbuf clusters */
 458
 459 /*
 460  * CTL_VM identifiers
 461  */
 462 #define VM_METER        1               /* struct vmmeter */
 463 #define VM_LOADAVG      2               /* struct loadavg */
 464 #define VM_MAXID        3               /* number of valid vm ids */
 465 #define VM_MACHFACTOR   4               /* struct loadavg with mach factor*/
 466
 467 #define CTL_VM_NAMES { \
 468         { 0, 0 }, \
 469         { "vmmeter", CTLTYPE_STRUCT }, \
 470         { "loadavg", CTLTYPE_STRUCT } \
 471 }
 472
 473 /*
 474  * CTL_HW identifiers
 475  */
 476 #define HW_MACHINE       1              /* string: machine class */
 477 #define HW_MODEL         2              /* string: specific machine model */
 478 #define HW_NCPU          3              /* int: number of cpus */
 479 #define HW_BYTEORDER     4              /* int: machine byte order */
 480 #define HW_PHYSMEM       5              /* int: total memory */
 481 #define HW_USERMEM       6              /* int: non-kernel memory */
 482 #define HW_PAGESIZE      7              /* int: software page size */
 483 #define HW_DISKNAMES     8              /* strings: disk drive names */
 484 #define HW_DISKSTATS     9              /* struct: diskstats[] */
 485 #define HW_EPOCH        10              /* int: 0 for Legacy, else NewWorld */
 486 #define HW_FLOATINGPT   11              /* int: has HW floating point? */
 487 #define HW_MACHINE_ARCH 12              /* string: machine architecture */
 488 #define HW_VECTORUNIT   13              /* int: has HW vector unit? */
 489 #define HW_BUS_FREQ     14              /* int: Bus Frequency */
 490 #define HW_CPU_FREQ     15              /* int: CPU Frequency */
 491 #define HW_CACHELINE    16              /* int: Cache Line Size in Bytes */
 492 #define HW_L1ICACHESIZE 17              /* int: L1 I Cache Size in Bytes */
 493 #define HW_L1DCACHESIZE 18              /* int: L1 D Cache Size in Bytes */
 494 #define HW_L2SETTINGS   19              /* int: L2 Cache Settings */
 495 #define HW_L2CACHESIZE  20              /* int: L2 Cache Size in Bytes */
 496 #define HW_L3SETTINGS   21              /* int: L3 Cache Settings */
 497 #define HW_L3CACHESIZE  22              /* int: L3 Cache Size in Bytes */
 498 #define HW_MAXID        23              /* number of valid hw ids */
 499
 500 #define CTL_HW_NAMES { \
 501         { 0, 0 }, \
 502         { "machine", CTLTYPE_STRING }, \
 503         { "model", CTLTYPE_STRING }, \
 504         { "ncpu", CTLTYPE_INT }, \
 505         { "byteorder", CTLTYPE_INT }, \
 506         { "physmem", CTLTYPE_INT }, \
 507         { "usermem", CTLTYPE_INT }, \
 508         { "pagesize", CTLTYPE_INT }, \
 509         { "disknames", CTLTYPE_STRUCT }, \
 510         { "diskstats", CTLTYPE_STRUCT }, \
 511         { "epoch", CTLTYPE_INT }, \
 512         { "floatingpoint", CTLTYPE_INT }, \
 513         { "machinearch", CTLTYPE_STRING }, \
 514         { "vectorunit", CTLTYPE_INT }, \
 515         { "busfrequency", CTLTYPE_INT }, \
 516         { "cpufrequency", CTLTYPE_INT }, \
 517         { "cachelinesize", CTLTYPE_INT }, \
 518         { "l1icachesize", CTLTYPE_INT }, \
 519         { "l1dcachesize", CTLTYPE_INT }, \
 520         { "l2settings", CTLTYPE_INT }, \
 521         { "l2cachesize", CTLTYPE_INT }, \
 522         { "l3settings", CTLTYPE_INT }, \
 523         { "l3cachesize", CTLTYPE_INT } \
 524 }
 525
 526 /*
 527  * CTL_USER definitions
 528  */
 529 #define USER_CS_PATH             1      /* string: _CS_PATH */
 530 #define USER_BC_BASE_MAX         2      /* int: BC_BASE_MAX */
 531 #define USER_BC_DIM_MAX          3      /* int: BC_DIM_MAX */
 532 #define USER_BC_SCALE_MAX        4      /* int: BC_SCALE_MAX */
 533 #define USER_BC_STRING_MAX       5      /* int: BC_STRING_MAX */
 534 #define USER_COLL_WEIGHTS_MAX    6      /* int: COLL_WEIGHTS_MAX */
 535 #define USER_EXPR_NEST_MAX       7      /* int: EXPR_NEST_MAX */
 536 #define USER_LINE_MAX            8      /* int: LINE_MAX */
 537 #define USER_RE_DUP_MAX          9      /* int: RE_DUP_MAX */
 538 #define USER_POSIX2_VERSION     10      /* int: POSIX2_VERSION */
 539 #define USER_POSIX2_C_BIND      11      /* int: POSIX2_C_BIND */
 540 #define USER_POSIX2_C_DEV       12      /* int: POSIX2_C_DEV */
 541 #define USER_POSIX2_CHAR_TERM   13      /* int: POSIX2_CHAR_TERM */
 542 #define USER_POSIX2_FORT_DEV    14      /* int: POSIX2_FORT_DEV */
 543 #define USER_POSIX2_FORT_RUN    15      /* int: POSIX2_FORT_RUN */
 544 #define USER_POSIX2_LOCALEDEF   16      /* int: POSIX2_LOCALEDEF */
 545 #define USER_POSIX2_SW_DEV      17      /* int: POSIX2_SW_DEV */
 546 #define USER_POSIX2_UPE         18      /* int: POSIX2_UPE */
 547 #define USER_STREAM_MAX         19      /* int: POSIX2_STREAM_MAX */
 548 #define USER_TZNAME_MAX         20      /* int: POSIX2_TZNAME_MAX */
 549 #define USER_MAXID              21      /* number of valid user ids */
 550
 551 #define CTL_USER_NAMES { \
 552         { 0, 0 }, \
 553         { "cs_path", CTLTYPE_STRING }, \
 554         { "bc_base_max", CTLTYPE_INT }, \
 555         { "bc_dim_max", CTLTYPE_INT }, \
 556         { "bc_scale_max", CTLTYPE_INT }, \
 557         { "bc_string_max", CTLTYPE_INT }, \
 558         { "coll_weights_max", CTLTYPE_INT }, \
 559         { "expr_nest_max", CTLTYPE_INT }, \
 560         { "line_max", CTLTYPE_INT }, \
 561         { "re_dup_max", CTLTYPE_INT }, \
 562         { "posix2_version", CTLTYPE_INT }, \
 563         { "posix2_c_bind", CTLTYPE_INT }, \
 564         { "posix2_c_dev", CTLTYPE_INT }, \
 565         { "posix2_char_term", CTLTYPE_INT }, \
 566         { "posix2_fort_dev", CTLTYPE_INT }, \
 567         { "posix2_fort_run", CTLTYPE_INT }, \
 568         { "posix2_localedef", CTLTYPE_INT }, \
 569         { "posix2_sw_dev", CTLTYPE_INT }, \
 570         { "posix2_upe", CTLTYPE_INT }, \
 571         { "stream_max", CTLTYPE_INT }, \
 572         { "tzname_max", CTLTYPE_INT } \
 573 }
 574
 575
 576
 577 /*
 578  * CTL_DEBUG definitions
 579  *
 580  * Second level identifier specifies which debug variable.
 581  * Third level identifier specifies which stucture component.
 582  */
 583 #define CTL_DEBUG_NAME          0       /* string: variable name */
 584 #define CTL_DEBUG_VALUE         1       /* int: variable value */
 585 #define CTL_DEBUG_MAXID         20
 586
 587 #ifdef  KERNEL
 588 #ifdef __APPLE_API_UNSTABLE
 589
 590 extern struct sysctl_oid_list sysctl__children;
 591 SYSCTL_DECL(_kern);
 592 SYSCTL_DECL(_sysctl);
 593 SYSCTL_DECL(_vm);
 594 SYSCTL_DECL(_vfs);
 595 SYSCTL_DECL(_net);
 596 SYSCTL_DECL(_debug);
 597 SYSCTL_DECL(_hw);
 598 SYSCTL_DECL(_machdep);
 599 SYSCTL_DECL(_user);
 600
 601
 602 #ifdef DEBUG
 603 /*
 604  * CTL_DEBUG variables.
 605  *
 606  * These are declared as separate variables so that they can be
 607  * individually initialized at the location of their associated
 608  * variable. The loader prevents multiple use by issuing errors
 609  * if a variable is initialized in more than one place. They are
 610  * aggregated into an array in debug_sysctl(), so that it can
 611  * conveniently locate them when querried. If more debugging
 612  * variables are added, they must also be declared here and also
 613  * entered into the array.
 614  */
 615 struct ctldebug {
 616         char    *debugname;     /* name of debugging variable */
 617         int     *debugvar;      /* pointer to debugging variable */
 618 };
 619 extern struct ctldebug debug0, debug1, debug2, debug3, debug4;
 620 extern struct ctldebug debug5, debug6, debug7, debug8, debug9;
 621 extern struct ctldebug debug10, debug11, debug12, debug13, debug14;
 622 extern struct ctldebug debug15, debug16, debug17, debug18, debug19;
 623 #endif  /* DEBUG */
 624
 625 extern char     machine[];
 626 extern char     osrelease[];
 627 extern char     ostype[];
 628
 629 struct linker_set;
 630
 631 void    sysctl_register_set(struct linker_set *lsp);
 632 void    sysctl_unregister_set(struct linker_set *lsp);
 633 int     kernel_sysctl(struct proc *p, int *name, u_int namelen, void *old,
 634                       size_t *oldlenp, void *new, size_t newlen,
 635                       size_t *retval);
 636 int     userland_sysctl(struct proc *p, int *name, u_int namelen, void *old,
 637                         size_t *oldlenp, int inkernel, void *new, size_t newlen,
 638                         size_t *retval);
 639 /*
 640  * Internal sysctl function calling convention:
 641  *
 642  *      (*sysctlfn)(name, namelen, oldval, oldlenp, newval, newlen);
 643  *
 644  * The name parameter points at the next component of the name to be
 645  * interpreted.  The namelen parameter is the number of integers in
 646  * the name.
 647  */
 648 typedef int (sysctlfn)
 649     __P((int *, u_int, void *, size_t *, void *, size_t, struct proc *));
 650
 651 int sysctl_int __P((void *, size_t *, void *, size_t, int *));
 652 int sysctl_rdint __P((void *, size_t *, void *, int));
 653 int sysctl_quad __P((void *, size_t *, void *, size_t, quad_t *));
 654 int sysctl_rdquad __P((void *, size_t *, void *, quad_t));
 655 int sysctl_string __P((void *, size_t *, void *, size_t, char *, int));
 656 int sysctl_rdstring __P((void *, size_t *, void *, char *));
 657 int sysctl_rdstruct __P((void *, size_t *, void *, void *, int));
 658 void fill_eproc __P((struct proc *, struct eproc *));
 659
 660 #endif /* __APPLE_API_UNSTABLE */
 661 #else   /* !KERNEL */
 662 #include <sys/cdefs.h>
 663
 664 __BEGIN_DECLS
 665 int     sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
 666 int     sysctlbyname __P((const char *, void *, size_t *, void *, size_t));
 667 __END_DECLS
 668 #endif  /* KERNEL */
 669 #endif  /* !_SYS_SYSCTL_H_ */