| 1 | /* |
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| 2 | * Copyright (c) 1989, 1993 |
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| 3 | * The Regents of the University of California. All rights reserved. |
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| 4 | * |
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| 5 | * This code is derived from software contributed to Berkeley by |
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| 6 | * Mike Karels at Berkeley Software Design, Inc. |
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| 7 | * |
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| 8 | * Redistribution and use in source and binary forms, with or without |
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| 9 | * modification, are permitted provided that the following conditions |
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| 10 | * are met: |
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| 11 | * 1. Redistributions of source code must retain the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer. |
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| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 14 | * notice, this list of conditions and the following disclaimer in the |
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| 15 | * documentation and/or other materials provided with the distribution. |
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| 16 | * 3. All advertising materials mentioning features or use of this software |
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| 17 | * must display the following acknowledgement: |
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| 18 | * This product includes software developed by the University of |
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| 19 | * California, Berkeley and its contributors. |
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| 20 | * 4. Neither the name of the University nor the names of its contributors |
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| 21 | * may be used to endorse or promote products derived from this software |
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| 22 | * without specific prior written permission. |
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| 23 | * |
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| 24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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| 25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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| 28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 34 | * SUCH DAMAGE. |
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| 35 | * |
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| 36 | * @(#)sysctl.h 8.1 (Berkeley) 6/2/93 |
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| 37 | * $Id$ |
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| 38 | */ |
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| 39 | |
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| 40 | #ifndef _SYS_SYSCTL_H_ |
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| 41 | #define _SYS_SYSCTL_H_ |
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| 42 | |
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| 43 | /* |
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| 44 | * Definitions for sysctl call. The sysctl call uses a hierarchical name |
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| 45 | * for objects that can be examined or modified. The name is expressed as |
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| 46 | * a sequence of integers. Like a file path name, the meaning of each |
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| 47 | * component depends on its place in the hierarchy. The top-level and kern |
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| 48 | * identifiers are defined here, and other identifiers are defined in the |
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| 49 | * respective subsystem header files. |
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| 50 | */ |
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| 51 | |
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| 52 | #define CTL_MAXNAME 12 /* largest number of components supported */ |
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| 53 | |
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| 54 | /* |
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| 55 | * Each subsystem defined by sysctl defines a list of variables |
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| 56 | * for that subsystem. Each name is either a node with further |
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| 57 | * levels defined below it, or it is a leaf of some particular |
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| 58 | * type given below. Each sysctl level defines a set of name/type |
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| 59 | * pairs to be used by sysctl(1) in manipulating the subsystem. |
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| 60 | */ |
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| 61 | struct ctlname { |
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| 62 | char *ctl_name; /* subsystem name */ |
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| 63 | int ctl_type; /* type of name */ |
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| 64 | }; |
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| 65 | |
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| 66 | #define CTLTYPE 0xf /* Mask for the type */ |
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| 67 | #define CTLTYPE_NODE 1 /* name is a node */ |
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| 68 | #define CTLTYPE_INT 2 /* name describes an integer */ |
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| 69 | #define CTLTYPE_STRING 3 /* name describes a string */ |
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| 70 | #define CTLTYPE_QUAD 4 /* name describes a 64-bit number */ |
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| 71 | #define CTLTYPE_OPAQUE 5 /* name describes a structure */ |
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| 72 | #define CTLTYPE_STRUCT CTLTYPE_OPAQUE /* name describes a structure */ |
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| 73 | |
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| 74 | #define CTLFLAG_RD 0x80000000 /* Allow reads of variable */ |
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| 75 | #define CTLFLAG_WR 0x40000000 /* Allow writes to the variable */ |
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| 76 | #define CTLFLAG_RW (CTLFLAG_RD|CTLFLAG_WR) |
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| 77 | #define CTLFLAG_NOLOCK 0x20000000 /* XXX Don't Lock */ |
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| 78 | #define CTLFLAG_ANYBODY 0x10000000 /* All users can set this var */ |
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| 79 | |
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| 80 | /* |
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| 81 | * USE THIS instead of a hardwired number from the categories below |
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| 82 | * to get dynamically assigned sysctl entries using the linker-set |
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| 83 | * technology. This is the way nearly all new sysctl variables should |
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| 84 | * be implimented. |
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| 85 | * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, ""); |
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| 86 | */ |
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| 87 | #define OID_AUTO (-1) |
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| 88 | |
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| 89 | #ifdef KERNEL |
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| 90 | #define SYSCTL_HANDLER_ARGS (struct sysctl_oid *oidp, void *arg1, int arg2, \ |
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| 91 | struct sysctl_req *req) |
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| 92 | |
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| 93 | /* |
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| 94 | * This describes the access space for a sysctl request. This is needed |
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| 95 | * so that we can use the interface from the kernel or from user-space. |
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| 96 | */ |
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| 97 | struct sysctl_req { |
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| 98 | struct proc *p; |
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| 99 | int lock; |
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| 100 | void *oldptr; |
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| 101 | int oldlen; |
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| 102 | int oldidx; |
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| 103 | int (*oldfunc)(struct sysctl_req *, const void *, int); |
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| 104 | void *newptr; |
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| 105 | int newlen; |
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| 106 | int newidx; |
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| 107 | int (*newfunc)(struct sysctl_req *, void *, int); |
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| 108 | }; |
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| 109 | |
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| 110 | /* |
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| 111 | * This describes one "oid" in the MIB tree. Potentially more nodes can |
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| 112 | * be hidden behind it, expanded by the handler. |
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| 113 | */ |
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| 114 | struct sysctl_oid { |
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| 115 | int oid_number; |
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| 116 | int oid_kind; |
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| 117 | void *oid_arg1; |
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| 118 | int oid_arg2; |
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| 119 | const char *oid_name; |
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| 120 | int (*oid_handler) SYSCTL_HANDLER_ARGS; |
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| 121 | const char *oid_fmt; |
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| 122 | }; |
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| 123 | |
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| 124 | #define SYSCTL_IN(r, p, l) |
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| 125 | #define SYSCTL_OUT(r, p, l) |
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| 126 | |
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| 127 | int sysctl_handle_int SYSCTL_HANDLER_ARGS; |
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| 128 | int sysctl_handle_string SYSCTL_HANDLER_ARGS; |
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| 129 | int sysctl_handle_opaque SYSCTL_HANDLER_ARGS; |
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| 130 | |
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| 131 | /* This is the "raw" function for a mib-oid */ |
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| 132 | #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) |
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| 133 | |
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| 134 | /* This makes a node from which other oids can hang */ |
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| 135 | #define SYSCTL_NODE(parent, nbr, name, access, handler, descr) |
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| 136 | |
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| 137 | /* This is a string len can be 0 to indicate '\0' termination */ |
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| 138 | #define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) |
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| 139 | |
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| 140 | /* This is a integer, if ptr is NULL, val is returned */ |
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| 141 | #define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) |
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| 142 | |
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| 143 | /* This is anything, specified by a pointer and a lenth */ |
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| 144 | #define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) |
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| 145 | |
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| 146 | /* This is a struct, specified by a pointer and type */ |
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| 147 | #define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) |
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| 148 | |
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| 149 | /* Needs a proc. Specify by pointer and arg */ |
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| 150 | #define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) |
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| 151 | #endif /* KERNEL */ |
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| 152 | |
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| 153 | /* |
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| 154 | * Top-level identifiers |
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| 155 | */ |
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| 156 | #define CTL_UNSPEC 0 /* unused */ |
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| 157 | #define CTL_KERN 1 /* "high kernel": proc, limits */ |
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| 158 | #define CTL_VM 2 /* virtual memory */ |
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| 159 | #define CTL_VFS 3 /* file system, mount type is next */ |
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| 160 | #define CTL_NET 4 /* network, see socket.h */ |
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| 161 | #define CTL_DEBUG 5 /* debugging parameters */ |
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| 162 | #define CTL_HW 6 /* generic cpu/io */ |
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| 163 | #define CTL_MACHDEP 7 /* machine dependent */ |
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| 164 | #define CTL_USER 8 /* user-level */ |
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| 165 | #define CTL_MAXID 9 /* number of valid top-level ids */ |
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| 166 | |
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| 167 | #define CTL_NAMES { \ |
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| 168 | { 0, 0 }, \ |
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| 169 | { "kern", CTLTYPE_NODE }, \ |
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| 170 | { "vm", CTLTYPE_NODE }, \ |
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| 171 | { "vfs", CTLTYPE_NODE }, \ |
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| 172 | { "net", CTLTYPE_NODE }, \ |
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| 173 | { "debug", CTLTYPE_NODE }, \ |
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| 174 | { "hw", CTLTYPE_NODE }, \ |
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| 175 | { "machdep", CTLTYPE_NODE }, \ |
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| 176 | { "user", CTLTYPE_NODE }, \ |
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| 177 | } |
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| 178 | |
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| 179 | /* |
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| 180 | * CTL_KERN identifiers |
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| 181 | */ |
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| 182 | #define KERN_OSTYPE 1 /* string: system version */ |
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| 183 | #define KERN_OSRELEASE 2 /* string: system release */ |
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| 184 | #define KERN_OSREV 3 /* int: system revision */ |
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| 185 | #define KERN_VERSION 4 /* string: compile time info */ |
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| 186 | #define KERN_MAXVNODES 5 /* int: max vnodes */ |
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| 187 | #define KERN_MAXPROC 6 /* int: max processes */ |
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| 188 | #define KERN_MAXFILES 7 /* int: max open files */ |
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| 189 | #define KERN_ARGMAX 8 /* int: max arguments to exec */ |
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| 190 | #define KERN_SECURELVL 9 /* int: system security level */ |
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| 191 | #define KERN_HOSTNAME 10 /* string: hostname */ |
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| 192 | #define KERN_HOSTID 11 /* int: host identifier */ |
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| 193 | #define KERN_CLOCKRATE 12 /* struct: struct clockrate */ |
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| 194 | #define KERN_VNODE 13 /* struct: vnode structures */ |
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| 195 | #define KERN_PROC 14 /* struct: process entries */ |
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| 196 | #define KERN_FILE 15 /* struct: file entries */ |
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| 197 | #define KERN_PROF 16 /* node: kernel profiling info */ |
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| 198 | #define KERN_POSIX1 17 /* int: POSIX.1 version */ |
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| 199 | #define KERN_NGROUPS 18 /* int: # of supplemental group ids */ |
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| 200 | #define KERN_JOB_CONTROL 19 /* int: is job control available */ |
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| 201 | #define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */ |
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| 202 | #define KERN_BOOTTIME 21 /* struct: time kernel was booted */ |
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| 203 | #define KERN_NISDOMAINNAME 22 /* string: YP domain name */ |
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| 204 | #define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */ |
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| 205 | #define KERN_OSRELDATE 24 /* int: OS release date */ |
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| 206 | #define KERN_NTP_PLL 25 /* node: NTP PLL control */ |
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| 207 | #define KERN_BOOTFILE 26 /* string: name of booted kernel */ |
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| 208 | #define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */ |
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| 209 | #define KERN_MAXPROCPERUID 28 /* int: max processes per uid */ |
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| 210 | #define KERN_DUMPDEV 29 /* dev_t: device to dump on */ |
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| 211 | #define KERN_SOMAXCONN 30 /* int: max connections in listen q */ |
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| 212 | #define KERN_MAXSOCKBUF 31 /* int: max size of a socket buffer */ |
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| 213 | #define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */ |
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| 214 | #define KERN_USRSTACK 33 /* int: address of USRSTACK */ |
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| 215 | #define KERN_MAXID 34 /* number of valid kern ids */ |
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| 216 | |
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| 217 | #define CTL_KERN_NAMES { \ |
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| 218 | { 0, 0 }, \ |
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| 219 | { "ostype", CTLTYPE_STRING }, \ |
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| 220 | { "osrelease", CTLTYPE_STRING }, \ |
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| 221 | { "osrevision", CTLTYPE_INT }, \ |
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| 222 | { "version", CTLTYPE_STRING }, \ |
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| 223 | { "maxvnodes", CTLTYPE_INT }, \ |
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| 224 | { "maxproc", CTLTYPE_INT }, \ |
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| 225 | { "maxfiles", CTLTYPE_INT }, \ |
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| 226 | { "argmax", CTLTYPE_INT }, \ |
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| 227 | { "securelevel", CTLTYPE_INT }, \ |
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| 228 | { "hostname", CTLTYPE_STRING }, \ |
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| 229 | { "hostid", CTLTYPE_INT }, \ |
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| 230 | { "clockrate", CTLTYPE_STRUCT }, \ |
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| 231 | { "vnode", CTLTYPE_STRUCT }, \ |
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| 232 | { "proc", CTLTYPE_STRUCT }, \ |
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| 233 | { "file", CTLTYPE_STRUCT }, \ |
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| 234 | { "profiling", CTLTYPE_NODE }, \ |
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| 235 | { "posix1version", CTLTYPE_INT }, \ |
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| 236 | { "ngroups", CTLTYPE_INT }, \ |
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| 237 | { "job_control", CTLTYPE_INT }, \ |
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| 238 | { "saved_ids", CTLTYPE_INT }, \ |
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| 239 | { "boottime", CTLTYPE_STRUCT }, \ |
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| 240 | { "nisdomainname", CTLTYPE_STRING }, \ |
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| 241 | { "update", CTLTYPE_INT }, \ |
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| 242 | { "osreldate", CTLTYPE_INT }, \ |
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| 243 | { "ntp_pll", CTLTYPE_NODE }, \ |
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| 244 | { "bootfile", CTLTYPE_STRING }, \ |
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| 245 | { "maxfilesperproc", CTLTYPE_INT }, \ |
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| 246 | { "maxprocperuid", CTLTYPE_INT }, \ |
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| 247 | { "dumpdev", CTLTYPE_STRUCT }, /* we lie; don't print as int */ \ |
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| 248 | { "somaxconn", CTLTYPE_INT }, \ |
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| 249 | { "maxsockbuf", CTLTYPE_INT }, \ |
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| 250 | { "ps_strings", CTLTYPE_INT }, \ |
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| 251 | { "usrstack", CTLTYPE_INT }, \ |
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| 252 | } |
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| 253 | |
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| 254 | /* |
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| 255 | * CTL_VFS identifiers |
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| 256 | */ |
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| 257 | #define VFS_VFSCONF 0 /* get configured filesystems */ |
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| 258 | #define VFS_MAXID 1 /* number of items */ |
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| 259 | |
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| 260 | #define CTL_VFS_NAMES { \ |
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| 261 | { "vfsconf", CTLTYPE_STRUCT }, \ |
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| 262 | } |
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| 263 | |
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| 264 | /* |
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| 265 | * KERN_PROC subtypes |
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| 266 | */ |
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| 267 | #define KERN_PROC_ALL 0 /* everything */ |
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| 268 | #define KERN_PROC_PID 1 /* by process id */ |
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| 269 | #define KERN_PROC_PGRP 2 /* by process group id */ |
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| 270 | #define KERN_PROC_SESSION 3 /* by session of pid */ |
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| 271 | #define KERN_PROC_TTY 4 /* by controlling tty */ |
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| 272 | #define KERN_PROC_UID 5 /* by effective uid */ |
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| 273 | #define KERN_PROC_RUID 6 /* by real uid */ |
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| 274 | |
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| 275 | /* |
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| 276 | * CTL_HW identifiers |
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| 277 | */ |
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| 278 | #define HW_MACHINE 1 /* string: machine class */ |
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| 279 | #define HW_MODEL 2 /* string: specific machine model */ |
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| 280 | #define HW_NCPU 3 /* int: number of cpus */ |
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| 281 | #define HW_BYTEORDER 4 /* int: machine byte order */ |
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| 282 | #define HW_PHYSMEM 5 /* int: total memory */ |
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| 283 | #define HW_USERMEM 6 /* int: non-kernel memory */ |
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| 284 | #define HW_PAGESIZE 7 /* int: software page size */ |
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| 285 | #define HW_DISKNAMES 8 /* strings: disk drive names */ |
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| 286 | #define HW_DISKSTATS 9 /* struct: diskstats[] */ |
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| 287 | #define HW_FLOATINGPT 10 /* int: has HW floating point? */ |
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| 288 | #define HW_MACHINE_ARCH 11 /* string: machine architecture */ |
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| 289 | #define HW_MAXID 12 /* number of valid hw ids */ |
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| 290 | |
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| 291 | #define CTL_HW_NAMES { \ |
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| 292 | { 0, 0 }, \ |
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| 293 | { "machine", CTLTYPE_STRING }, \ |
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| 294 | { "model", CTLTYPE_STRING }, \ |
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| 295 | { "ncpu", CTLTYPE_INT }, \ |
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| 296 | { "byteorder", CTLTYPE_INT }, \ |
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| 297 | { "physmem", CTLTYPE_INT }, \ |
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| 298 | { "usermem", CTLTYPE_INT }, \ |
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| 299 | { "pagesize", CTLTYPE_INT }, \ |
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| 300 | { "disknames", CTLTYPE_STRUCT }, \ |
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| 301 | { "diskstats", CTLTYPE_STRUCT }, \ |
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| 302 | { "floatingpoint", CTLTYPE_INT }, \ |
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| 303 | } |
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| 304 | |
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| 305 | /* |
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| 306 | * CTL_USER definitions |
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| 307 | */ |
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| 308 | #define USER_CS_PATH 1 /* string: _CS_PATH */ |
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| 309 | #define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */ |
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| 310 | #define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */ |
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| 311 | #define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */ |
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| 312 | #define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */ |
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| 313 | #define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */ |
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| 314 | #define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */ |
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| 315 | #define USER_LINE_MAX 8 /* int: LINE_MAX */ |
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| 316 | #define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */ |
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| 317 | #define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */ |
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| 318 | #define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */ |
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| 319 | #define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */ |
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| 320 | #define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */ |
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| 321 | #define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */ |
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| 322 | #define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */ |
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| 323 | #define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */ |
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| 324 | #define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */ |
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| 325 | #define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */ |
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| 326 | #define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */ |
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| 327 | #define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */ |
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| 328 | #define USER_MAXID 21 /* number of valid user ids */ |
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| 329 | |
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| 330 | #define CTL_USER_NAMES { \ |
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| 331 | { 0, 0 }, \ |
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| 332 | { "cs_path", CTLTYPE_STRING }, \ |
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| 333 | { "bc_base_max", CTLTYPE_INT }, \ |
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| 334 | { "bc_dim_max", CTLTYPE_INT }, \ |
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| 335 | { "bc_scale_max", CTLTYPE_INT }, \ |
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| 336 | { "bc_string_max", CTLTYPE_INT }, \ |
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| 337 | { "coll_weights_max", CTLTYPE_INT }, \ |
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| 338 | { "expr_nest_max", CTLTYPE_INT }, \ |
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| 339 | { "line_max", CTLTYPE_INT }, \ |
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| 340 | { "re_dup_max", CTLTYPE_INT }, \ |
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| 341 | { "posix2_version", CTLTYPE_INT }, \ |
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| 342 | { "posix2_c_bind", CTLTYPE_INT }, \ |
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| 343 | { "posix2_c_dev", CTLTYPE_INT }, \ |
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| 344 | { "posix2_char_term", CTLTYPE_INT }, \ |
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| 345 | { "posix2_fort_dev", CTLTYPE_INT }, \ |
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| 346 | { "posix2_fort_run", CTLTYPE_INT }, \ |
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| 347 | { "posix2_localedef", CTLTYPE_INT }, \ |
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| 348 | { "posix2_sw_dev", CTLTYPE_INT }, \ |
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| 349 | { "posix2_upe", CTLTYPE_INT }, \ |
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| 350 | { "stream_max", CTLTYPE_INT }, \ |
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| 351 | { "tzname_max", CTLTYPE_INT }, \ |
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| 352 | } |
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| 353 | |
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| 354 | #ifdef KERNEL |
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| 355 | |
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| 356 | extern char cpu_model[]; |
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| 357 | extern char machine[]; |
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| 358 | extern char osrelease[]; |
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| 359 | extern char ostype[]; |
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| 360 | |
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| 361 | int kernel_sysctl(struct proc *p, int *name, u_int namelen, void *old, size_t *oldlenp, void *new, size_t newlen, int *retval); |
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| 362 | int userland_sysctl(struct proc *p, int *name, u_int namelen, void *old, size_t *oldlenp, int inkernel, void *new, size_t newlen, int *retval); |
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| 363 | /* |
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| 364 | int sysctl_clockrate __P((char *, size_t*)); |
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| 365 | int sysctl_file __P((char *, size_t*)); |
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| 366 | int sysctl_doproc __P((int *, u_int, char *, size_t*)); |
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| 367 | int sysctl_doprof __P((int *, u_int, void *, size_t *, void *, size_t)); |
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| 368 | */ |
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| 369 | |
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| 370 | #else /* !KERNEL */ |
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| 371 | #include <sys/cdefs.h> |
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| 372 | |
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| 373 | __BEGIN_DECLS |
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| 374 | int sysctl __P((int *, u_int, void *, size_t *, void *, size_t)); |
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| 375 | int sysctlbyname __P((const char *, void *, size_t *, void *, size_t)); |
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| 376 | __END_DECLS |
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| 377 | #endif /* KERNEL */ |
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| 378 | |
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| 379 | #endif /* !_SYS_SYSCTL_H_ */ |
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