netbsd32_sysctl.c revision 1.1.2.2
1 1.1.2.2 bouyer /* $NetBSD: netbsd32_sysctl.c,v 1.1.2.2 2001/02/11 19:14:21 bouyer Exp $ */ 2 1.1.2.2 bouyer 3 1.1.2.2 bouyer /* 4 1.1.2.2 bouyer * Copyright (c) 1998, 2001 Matthew R. Green 5 1.1.2.2 bouyer * All rights reserved. 6 1.1.2.2 bouyer * 7 1.1.2.2 bouyer * Redistribution and use in source and binary forms, with or without 8 1.1.2.2 bouyer * modification, are permitted provided that the following conditions 9 1.1.2.2 bouyer * are met: 10 1.1.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 11 1.1.2.2 bouyer * notice, this list of conditions and the following disclaimer. 12 1.1.2.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 13 1.1.2.2 bouyer * notice, this list of conditions and the following disclaimer in the 14 1.1.2.2 bouyer * documentation and/or other materials provided with the distribution. 15 1.1.2.2 bouyer * 3. The name of the author may not be used to endorse or promote products 16 1.1.2.2 bouyer * derived from this software without specific prior written permission. 17 1.1.2.2 bouyer * 18 1.1.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 1.1.2.2 bouyer * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 1.1.2.2 bouyer * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 1.1.2.2 bouyer * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 1.1.2.2 bouyer * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 1.1.2.2 bouyer * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 1.1.2.2 bouyer * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 1.1.2.2 bouyer * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 1.1.2.2 bouyer * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 1.1.2.2 bouyer * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 1.1.2.2 bouyer * SUCH DAMAGE. 29 1.1.2.2 bouyer */ 30 1.1.2.2 bouyer 31 1.1.2.2 bouyer #if defined(_KERNEL) && !defined(_LKM) 32 1.1.2.2 bouyer #include "opt_ddb.h" 33 1.1.2.2 bouyer #endif 34 1.1.2.2 bouyer 35 1.1.2.2 bouyer #include <sys/param.h> 36 1.1.2.2 bouyer #include <sys/systm.h> 37 1.1.2.2 bouyer #include <sys/kernel.h> 38 1.1.2.2 bouyer #include <sys/malloc.h> 39 1.1.2.2 bouyer #include <sys/mount.h> 40 1.1.2.2 bouyer #include <sys/stat.h> 41 1.1.2.2 bouyer #include <sys/time.h> 42 1.1.2.2 bouyer #include <sys/vnode.h> 43 1.1.2.2 bouyer #include <sys/syscallargs.h> 44 1.1.2.2 bouyer #include <sys/proc.h> 45 1.1.2.2 bouyer #define __SYSCTL_PRIVATE 46 1.1.2.2 bouyer #include <sys/sysctl.h> 47 1.1.2.2 bouyer 48 1.1.2.2 bouyer #include <uvm/uvm_extern.h> 49 1.1.2.2 bouyer 50 1.1.2.2 bouyer #include <compat/netbsd32/netbsd32.h> 51 1.1.2.2 bouyer #include <compat/netbsd32/netbsd32_syscall.h> 52 1.1.2.2 bouyer #include <compat/netbsd32/netbsd32_syscallargs.h> 53 1.1.2.2 bouyer #include <compat/netbsd32/netbsd32_conv.h> 54 1.1.2.2 bouyer 55 1.1.2.2 bouyer #if defined(DDB) 56 1.1.2.2 bouyer #include <ddb/ddbvar.h> 57 1.1.2.2 bouyer #endif 58 1.1.2.2 bouyer 59 1.1.2.2 bouyer int uvm_sysctl32(int *, u_int, void *, size_t *, void *, size_t, struct proc *); 60 1.1.2.2 bouyer int kern_sysctl32(int *, u_int, void *, size_t *, void *, size_t, struct proc *); 61 1.1.2.2 bouyer 62 1.1.2.2 bouyer /* 63 1.1.2.2 bouyer * uvm_sysctl32: sysctl hook into UVM system, handling special 32-bit 64 1.1.2.2 bouyer * sensitive calls. 65 1.1.2.2 bouyer */ 66 1.1.2.2 bouyer int 67 1.1.2.2 bouyer uvm_sysctl32(name, namelen, oldp, oldlenp, newp, newlen, p) 68 1.1.2.2 bouyer int *name; 69 1.1.2.2 bouyer u_int namelen; 70 1.1.2.2 bouyer void *oldp; 71 1.1.2.2 bouyer size_t *oldlenp; 72 1.1.2.2 bouyer void *newp; 73 1.1.2.2 bouyer size_t newlen; 74 1.1.2.2 bouyer struct proc *p; 75 1.1.2.2 bouyer { 76 1.1.2.2 bouyer struct netbsd32_loadavg av32; 77 1.1.2.2 bouyer 78 1.1.2.2 bouyer /* all sysctl names at this level are terminal */ 79 1.1.2.2 bouyer if (namelen != 1) 80 1.1.2.2 bouyer return (ENOTDIR); /* overloaded */ 81 1.1.2.2 bouyer 82 1.1.2.2 bouyer switch (name[0]) { 83 1.1.2.2 bouyer case VM_LOADAVG: 84 1.1.2.2 bouyer netbsd32_from_loadavg(&av32, &averunnable); 85 1.1.2.2 bouyer return (sysctl_rdstruct(oldp, oldlenp, newp, &av32, 86 1.1.2.2 bouyer sizeof(av32))); 87 1.1.2.2 bouyer 88 1.1.2.2 bouyer default: 89 1.1.2.2 bouyer return (EOPNOTSUPP); 90 1.1.2.2 bouyer } 91 1.1.2.2 bouyer /* NOTREACHED */ 92 1.1.2.2 bouyer } 93 1.1.2.2 bouyer 94 1.1.2.2 bouyer /* 95 1.1.2.2 bouyer * kern_sysctl32: sysctl hook into KERN system, handling special 32-bit 96 1.1.2.2 bouyer * sensitive calls. 97 1.1.2.2 bouyer */ 98 1.1.2.2 bouyer int 99 1.1.2.2 bouyer kern_sysctl32(name, namelen, oldp, oldlenp, newp, newlen, p) 100 1.1.2.2 bouyer int *name; 101 1.1.2.2 bouyer u_int namelen; 102 1.1.2.2 bouyer void *oldp; 103 1.1.2.2 bouyer size_t *oldlenp; 104 1.1.2.2 bouyer void *newp; 105 1.1.2.2 bouyer size_t newlen; 106 1.1.2.2 bouyer struct proc *p; 107 1.1.2.2 bouyer { 108 1.1.2.2 bouyer struct netbsd32_timeval bt32; 109 1.1.2.2 bouyer 110 1.1.2.2 bouyer /* All sysctl names at this level, except for a few, are terminal. */ 111 1.1.2.2 bouyer switch (name[0]) { 112 1.1.2.2 bouyer #if 0 113 1.1.2.2 bouyer case KERN_PROC: 114 1.1.2.2 bouyer case KERN_PROC2: 115 1.1.2.2 bouyer case KERN_PROF: 116 1.1.2.2 bouyer case KERN_MBUF: 117 1.1.2.2 bouyer case KERN_PROC_ARGS: 118 1.1.2.2 bouyer case KERN_SYSVIPC_INFO: 119 1.1.2.2 bouyer /* Not terminal. */ 120 1.1.2.2 bouyer break; 121 1.1.2.2 bouyer #endif 122 1.1.2.2 bouyer default: 123 1.1.2.2 bouyer if (namelen != 1) 124 1.1.2.2 bouyer return (ENOTDIR); /* overloaded */ 125 1.1.2.2 bouyer } 126 1.1.2.2 bouyer 127 1.1.2.2 bouyer switch (name[0]) { 128 1.1.2.2 bouyer case KERN_BOOTTIME: 129 1.1.2.2 bouyer netbsd32_from_timeval(&boottime, &bt32); 130 1.1.2.2 bouyer return (sysctl_rdstruct(oldp, oldlenp, newp, &bt32, 131 1.1.2.2 bouyer sizeof(struct netbsd32_timeval))); 132 1.1.2.2 bouyer 133 1.1.2.2 bouyer default: 134 1.1.2.2 bouyer return (EOPNOTSUPP); 135 1.1.2.2 bouyer } 136 1.1.2.2 bouyer /* NOTREACHED */ 137 1.1.2.2 bouyer } 138 1.1.2.2 bouyer 139 1.1.2.2 bouyer int 140 1.1.2.2 bouyer netbsd32___sysctl(p, v, retval) 141 1.1.2.2 bouyer struct proc *p; 142 1.1.2.2 bouyer void *v; 143 1.1.2.2 bouyer register_t *retval; 144 1.1.2.2 bouyer { 145 1.1.2.2 bouyer struct netbsd32___sysctl_args /* { 146 1.1.2.2 bouyer syscallarg(netbsd32_intp) name; 147 1.1.2.2 bouyer syscallarg(u_int) namelen; 148 1.1.2.2 bouyer syscallarg(netbsd32_voidp) old; 149 1.1.2.2 bouyer syscallarg(netbsd32_size_tp) oldlenp; 150 1.1.2.2 bouyer syscallarg(netbsd32_voidp) new; 151 1.1.2.2 bouyer syscallarg(netbsd32_size_t) newlen; 152 1.1.2.2 bouyer } */ *uap = v; 153 1.1.2.2 bouyer int error; 154 1.1.2.2 bouyer netbsd32_size_t savelen = 0; 155 1.1.2.2 bouyer size_t oldlen = 0; 156 1.1.2.2 bouyer sysctlfn *fn; 157 1.1.2.2 bouyer int name[CTL_MAXNAME]; 158 1.1.2.2 bouyer 159 1.1.2.2 bouyer /* 160 1.1.2.2 bouyer * Some of these sysctl functions do their own copyin/copyout. 161 1.1.2.2 bouyer * We need to disable or emulate the ones that need their 162 1.1.2.2 bouyer * arguments converted. 163 1.1.2.2 bouyer */ 164 1.1.2.2 bouyer 165 1.1.2.2 bouyer if (SCARG(uap, new) != NULL && 166 1.1.2.2 bouyer (error = suser(p->p_ucred, &p->p_acflag))) 167 1.1.2.2 bouyer return (error); 168 1.1.2.2 bouyer /* 169 1.1.2.2 bouyer * all top-level sysctl names are non-terminal 170 1.1.2.2 bouyer */ 171 1.1.2.2 bouyer if (SCARG(uap, namelen) > CTL_MAXNAME || SCARG(uap, namelen) < 2) 172 1.1.2.2 bouyer return (EINVAL); 173 1.1.2.2 bouyer error = copyin((caddr_t)(u_long)SCARG(uap, name), &name, 174 1.1.2.2 bouyer SCARG(uap, namelen) * sizeof(int)); 175 1.1.2.2 bouyer if (error) 176 1.1.2.2 bouyer return (error); 177 1.1.2.2 bouyer 178 1.1.2.2 bouyer switch (name[0]) { 179 1.1.2.2 bouyer case CTL_KERN: 180 1.1.2.2 bouyer switch (name[1]) { 181 1.1.2.2 bouyer #if 0 182 1.1.2.2 bouyer case KERN_FILE: 183 1.1.2.2 bouyer case KERN_NTPTIME: 184 1.1.2.2 bouyer case KERN_SYSVIPC_INFO: 185 1.1.2.2 bouyer #endif 186 1.1.2.2 bouyer case KERN_BOOTTIME: 187 1.1.2.2 bouyer fn = kern_sysctl32; 188 1.1.2.2 bouyer break; 189 1.1.2.2 bouyer default: 190 1.1.2.2 bouyer fn = kern_sysctl; 191 1.1.2.2 bouyer break; 192 1.1.2.2 bouyer } 193 1.1.2.2 bouyer break; 194 1.1.2.2 bouyer case CTL_HW: 195 1.1.2.2 bouyer fn = hw_sysctl; 196 1.1.2.2 bouyer break; 197 1.1.2.2 bouyer case CTL_VM: 198 1.1.2.2 bouyer switch (name[1]) { 199 1.1.2.2 bouyer case VM_LOADAVG: 200 1.1.2.2 bouyer fn = uvm_sysctl32; /* need to convert a `long' */ 201 1.1.2.2 bouyer break; 202 1.1.2.2 bouyer default: 203 1.1.2.2 bouyer fn = uvm_sysctl; 204 1.1.2.2 bouyer break; 205 1.1.2.2 bouyer } 206 1.1.2.2 bouyer break; 207 1.1.2.2 bouyer case CTL_NET: 208 1.1.2.2 bouyer fn = net_sysctl; 209 1.1.2.2 bouyer break; 210 1.1.2.2 bouyer case CTL_VFS: 211 1.1.2.2 bouyer fn = vfs_sysctl; 212 1.1.2.2 bouyer break; 213 1.1.2.2 bouyer case CTL_MACHDEP: 214 1.1.2.2 bouyer fn = cpu_sysctl; 215 1.1.2.2 bouyer break; 216 1.1.2.2 bouyer #ifdef DEBUG 217 1.1.2.2 bouyer case CTL_DEBUG: 218 1.1.2.2 bouyer fn = debug_sysctl; 219 1.1.2.2 bouyer break; 220 1.1.2.2 bouyer #endif 221 1.1.2.2 bouyer #ifdef DDB 222 1.1.2.2 bouyer case CTL_DDB: 223 1.1.2.2 bouyer fn = ddb_sysctl; 224 1.1.2.2 bouyer break; 225 1.1.2.2 bouyer #endif 226 1.1.2.2 bouyer case CTL_PROC: 227 1.1.2.2 bouyer fn = proc_sysctl; 228 1.1.2.2 bouyer break; 229 1.1.2.2 bouyer default: 230 1.1.2.2 bouyer return (EOPNOTSUPP); 231 1.1.2.2 bouyer } 232 1.1.2.2 bouyer 233 1.1.2.2 bouyer /* 234 1.1.2.2 bouyer * XXX Hey, we wire `old', but what about `new'? 235 1.1.2.2 bouyer */ 236 1.1.2.2 bouyer 237 1.1.2.2 bouyer if (SCARG(uap, oldlenp) && 238 1.1.2.2 bouyer (error = copyin((caddr_t)(u_long)SCARG(uap, oldlenp), &savelen, 239 1.1.2.2 bouyer sizeof(savelen)))) 240 1.1.2.2 bouyer return (error); 241 1.1.2.2 bouyer if (SCARG(uap, old) != NULL) { 242 1.1.2.2 bouyer error = lockmgr(&sysctl_memlock, LK_EXCLUSIVE, NULL); 243 1.1.2.2 bouyer if (error) 244 1.1.2.2 bouyer return (error); 245 1.1.2.2 bouyer if (uvm_vslock(p, (void *)(u_long)SCARG(uap, old), savelen, 246 1.1.2.2 bouyer VM_PROT_READ|VM_PROT_WRITE) != KERN_SUCCESS) { 247 1.1.2.2 bouyer (void) lockmgr(&sysctl_memlock, LK_RELEASE, NULL); 248 1.1.2.2 bouyer return (EFAULT); 249 1.1.2.2 bouyer } 250 1.1.2.2 bouyer oldlen = savelen; 251 1.1.2.2 bouyer } 252 1.1.2.2 bouyer error = (*fn)(name + 1, SCARG(uap, namelen) - 1, 253 1.1.2.2 bouyer (void *)(u_long)SCARG(uap, old), &oldlen, 254 1.1.2.2 bouyer (void *)(u_long)SCARG(uap, new), SCARG(uap, newlen), p); 255 1.1.2.2 bouyer if (SCARG(uap, old) != NULL) { 256 1.1.2.2 bouyer uvm_vsunlock(p, (void *)(u_long)SCARG(uap, old), savelen); 257 1.1.2.2 bouyer (void) lockmgr(&sysctl_memlock, LK_RELEASE, NULL); 258 1.1.2.2 bouyer } 259 1.1.2.2 bouyer savelen = oldlen; 260 1.1.2.2 bouyer if (error) 261 1.1.2.2 bouyer return (error); 262 1.1.2.2 bouyer if (SCARG(uap, oldlenp)) 263 1.1.2.2 bouyer error = copyout(&savelen, 264 1.1.2.2 bouyer (caddr_t)(u_long)SCARG(uap, oldlenp), sizeof(savelen)); 265 1.1.2.2 bouyer return (error); 266 1.1.2.2 bouyer } 267
Indexes created Mon Sep 29 21:09:56 GMT 2025