1 /* 2 * Copyright (c) 1989, 1993 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Mike Karels at Berkeley Software Design, Inc. 7 * 8 * %sccs.include.redist.c% 9 * 10 * @(#)sysctl.h 7.23 (Berkeley) 05/01/93 11 */ 12 13 #ifndef _SYS_SYSCTL_H_ 14 #define _SYS_SYSCTL_H_ 15 16 /* 17 * These are for the eproc structure defined below. 18 */ 19 #ifndef KERNEL 20 #include <sys/time.h> 21 #include <sys/ucred.h> 22 #include <sys/proc.h> 23 #include <vm/vm.h> 24 #endif 25 26 /* 27 * Definitions for sysctl call. The sysctl call uses a hierarchical name 28 * for objects that can be examined or modified. The name is expressed as 29 * a sequence of integers. Like a file path name, the meaning of each 30 * component depends on its place in the hierarchy. The top-level and kern 31 * identifiers are defined here, and other identifiers are defined in the 32 * respective subsystem header files. 33 */ 34 35 #define CTL_MAXNAME 12 /* largest number of components supported */ 36 37 /* 38 * Each subsystem defined by sysctl defines a list of variables 39 * for that subsystem. Each name is either a node with further 40 * levels defined below it, or it is a leaf of some particular 41 * type given below. Each sysctl level defines a set of name/type 42 * pairs to be used by sysctl(1) in manipulating the subsystem. 43 */ 44 struct ctlname { 45 char *ctl_name; /* subsystem name */ 46 int ctl_type; /* type of name */ 47 }; 48 #define CTLTYPE_NODE 1 /* name is a node */ 49 #define CTLTYPE_INT 2 /* name describes an integer */ 50 #define CTLTYPE_STRING 3 /* name describes a string */ 51 #define CTLTYPE_QUAD 4 /* name describes a 64-bit number */ 52 #define CTLTYPE_STRUCT 5 /* name describes a structure */ 53 54 /* 55 * Top-level identifiers 56 */ 57 #define CTL_UNSPEC 0 /* unused */ 58 #define CTL_KERN 1 /* "high kernel": proc, limits */ 59 #define CTL_VM 2 /* virtual memory */ 60 #define CTL_FS 3 /* file system, mount type is next */ 61 #define CTL_NET 4 /* network, see socket.h */ 62 #define CTL_DEBUG 5 /* debugging parameters */ 63 #define CTL_HW 6 /* generic cpu/io */ 64 #define CTL_MACHDEP 7 /* machine dependent */ 65 #define CTL_MAXID 8 /* number of valid top-level ids */ 66 67 #define CTL_NAMES { \ 68 { 0, 0 }, \ 69 { "kern", CTLTYPE_NODE }, \ 70 { "vm", CTLTYPE_NODE }, \ 71 { "fs", CTLTYPE_NODE }, \ 72 { "net", CTLTYPE_NODE }, \ 73 { "debug", CTLTYPE_NODE }, \ 74 { "hw", CTLTYPE_NODE }, \ 75 { "machdep", CTLTYPE_NODE }, \ 76 } 77 78 /* 79 * CTL_KERN identifiers 80 */ 81 #define KERN_OSTYPE 1 /* string: system version */ 82 #define KERN_OSRELEASE 2 /* string: system release */ 83 #define KERN_OSREV 3 /* int: system revision */ 84 #define KERN_VERSION 4 /* string: compile time info */ 85 #define KERN_MAXVNODES 5 /* int: max vnodes */ 86 #define KERN_MAXPROC 6 /* int: max simultaneous processes */ 87 #define KERN_MAXFILES 7 /* int: max open files */ 88 #define KERN_ARGMAX 8 /* int: max arguments to exec */ 89 #define KERN_SECURELVL 9 /* int: system security level */ 90 #define KERN_HOSTNAME 10 /* string: hostname */ 91 #define KERN_HOSTID 11 /* int: host identifier */ 92 #define KERN_CLOCKRATE 12 /* struct: struct clockrate */ 93 #define KERN_VNODE 13 /* struct: vnode structures */ 94 #define KERN_PROC 14 /* struct: process entries */ 95 #define KERN_FILE 15 /* struct: file entries */ 96 #define KERN_PROF 16 /* node: kernel profiling info */ 97 #define KERN_POSIX1 17 /* int: POSIX.1 version */ 98 #define KERN_MAXID 18 /* number of valid kern ids */ 99 100 #define CTL_KERN_NAMES { \ 101 { 0, 0 }, \ 102 { "ostype", CTLTYPE_STRING }, \ 103 { "osrelease", CTLTYPE_STRING }, \ 104 { "osrevision", CTLTYPE_INT }, \ 105 { "version", CTLTYPE_STRING }, \ 106 { "maxvnodes", CTLTYPE_INT }, \ 107 { "maxproc", CTLTYPE_INT }, \ 108 { "maxfiles", CTLTYPE_INT }, \ 109 { "argmax", CTLTYPE_INT }, \ 110 { "securelevel", CTLTYPE_INT }, \ 111 { "hostname", CTLTYPE_STRING }, \ 112 { "hostid", CTLTYPE_INT }, \ 113 { "clockrate", CTLTYPE_STRUCT }, \ 114 { "vnode", CTLTYPE_STRUCT }, \ 115 { "proc", CTLTYPE_STRUCT }, \ 116 { "file", CTLTYPE_STRUCT }, \ 117 { "profiling", CTLTYPE_NODE }, \ 118 { "posix1version", CTLTYPE_INT }, \ 119 } 120 121 /* 122 * KERN_PROC subtypes 123 */ 124 #define KERN_PROC_ALL 0 /* everything */ 125 #define KERN_PROC_PID 1 /* by process id */ 126 #define KERN_PROC_PGRP 2 /* by process group id */ 127 #define KERN_PROC_SESSION 3 /* by session of pid */ 128 #define KERN_PROC_TTY 4 /* by controlling tty */ 129 #define KERN_PROC_UID 5 /* by effective uid */ 130 #define KERN_PROC_RUID 6 /* by real uid */ 131 132 /* 133 * KERN_PROC subtype ops return arrays of augmented proc structures: 134 */ 135 struct kinfo_proc { 136 struct proc kp_proc; /* proc structure */ 137 struct eproc { 138 struct proc *e_paddr; /* address of proc */ 139 struct session *e_sess; /* session pointer */ 140 struct pcred e_pcred; /* process credentials */ 141 struct ucred e_ucred; /* current credentials */ 142 #ifdef sparc 143 struct { 144 segsz_t vm_rssize; /* resident set size */ 145 segsz_t vm_tsize; /* text size */ 146 segsz_t vm_dsize; /* data size */ 147 segsz_t vm_ssize; /* stack size */ 148 } e_vm; 149 #else 150 struct vmspace e_vm; /* address space */ 151 #endif 152 pid_t e_ppid; /* parent process id */ 153 pid_t e_pgid; /* process group id */ 154 short e_jobc; /* job control counter */ 155 dev_t e_tdev; /* controlling tty dev */ 156 pid_t e_tpgid; /* tty process group id */ 157 struct session *e_tsess; /* tty session pointer */ 158 #define WMESGLEN 7 159 char e_wmesg[WMESGLEN+1]; /* wchan message */ 160 segsz_t e_xsize; /* text size */ 161 short e_xrssize; /* text rss */ 162 short e_xccount; /* text references */ 163 short e_xswrss; 164 long e_flag; 165 #define EPROC_CTTY 0x01 /* controlling tty vnode active */ 166 #define EPROC_SLEADER 0x02 /* session leader */ 167 char e_login[MAXLOGNAME]; /* setlogin() name */ 168 long e_spare[4]; 169 } kp_eproc; 170 }; 171 172 /* 173 * CTL_HW identifiers 174 */ 175 #define HW_MACHINE 1 /* string: machine class */ 176 #define HW_MODEL 2 /* string: specific machine model */ 177 #define HW_NCPU 3 /* int: number of cpus */ 178 #define HW_BYTEORDER 4 /* int: machine byte order */ 179 #define HW_PHYSMEM 5 /* int: total memory */ 180 #define HW_USERMEM 6 /* int: non-kernel memory */ 181 #define HW_PAGESIZE 7 /* int: software page size */ 182 #define HW_DISKNAMES 8 /* strings: disk drive names */ 183 #define HW_DISKSTATS 9 /* struct: diskstats[] */ 184 #define HW_MAXID 10 /* number of valid hw ids */ 185 186 #define CTL_HW_NAMES { \ 187 { 0, 0 }, \ 188 { "machine", CTLTYPE_STRING }, \ 189 { "model", CTLTYPE_STRING }, \ 190 { "ncpu", CTLTYPE_INT }, \ 191 { "byteorder", CTLTYPE_INT }, \ 192 { "physmem", CTLTYPE_INT }, \ 193 { "usermem", CTLTYPE_INT }, \ 194 { "pagesize", CTLTYPE_INT }, \ 195 { "disknames", CTLTYPE_STRUCT }, \ 196 { "diskstats", CTLTYPE_STRUCT }, \ 197 } 198 199 /* 200 * CTL_DEBUG definitions 201 * 202 * Second level identifier specifies which debug variable. 203 * Third level identifier specifies which stucture component. 204 */ 205 #define CTL_DEBUG_NAME 0 /* string: variable name */ 206 #define CTL_DEBUG_VALUE 1 /* int: variable value */ 207 #define CTL_DEBUG_MAXID 20 208 209 #ifdef KERNEL 210 #ifdef DEBUG 211 /* 212 * CTL_DEBUG variables. 213 * 214 * These are declared as separate variables so that they can be 215 * individually initialized at the location of their associated 216 * variable. The loader prevents multiple use by issuing errors 217 * if a variable is initialized in more than one place. They are 218 * aggregated into an array in debug_sysctl(), so that it can 219 * conveniently locate them when querried. If more debugging 220 * variables are added, they must also be declared here and also 221 * entered into the array. 222 */ 223 struct ctldebug { 224 char *debugname; /* name of debugging variable */ 225 int *debugvar; /* pointer to debugging variable */ 226 }; 227 extern struct ctldebug debug0, debug1, debug2, debug3, debug4; 228 extern struct ctldebug debug5, debug6, debug7, debug8, debug9; 229 extern struct ctldebug debug10, debug11, debug12, debug13, debug14; 230 extern struct ctldebug debug15, debug16, debug17, debug18, debug19; 231 #endif /* DEBUG */ 232 233 /* 234 * Internal sysctl function calling convention: 235 * 236 * (*sysctlfn)(name, namelen, oldval, oldlenp, newval, newlen); 237 * 238 * The name parameter points at the next component of the name to be 239 * interpreted. The namelen parameter is the number of integers in 240 * the name. 241 */ 242 typedef int (sysctlfn) 243 __P((int *, u_int, void *, size_t *, void *, size_t, struct proc *)); 244 245 int sysctl_int __P((void *, size_t *, void *, size_t, int *)); 246 int sysctl_rdint __P((void *, size_t *, void *, int)); 247 int sysctl_string __P((void *, size_t *, void *, size_t, char *, int)); 248 int sysctl_rdstring __P((void *, size_t *, void *, char *)); 249 int sysctl_rdstruct __P((void *, size_t *, void *, void *, int)); 250 void fill_eproc __P((struct proc *, struct eproc *)); 251 252 #else /* !KERNEL */ 253 #include <sys/cdefs.h> 254 255 __BEGIN_DECLS 256 int sysctl __P((int *, u_int, void *, size_t *, void *, size_t)); 257 __END_DECLS 258 #endif /* KERNEL */ 259 #endif /* !_SYS_SYSCTL_H_ */ 260