netbsd32_sysctl.c revision 1.1.4.6
1 /* $NetBSD: netbsd32_sysctl.c,v 1.1.4.6 2002/06/20 03:43:11 nathanw Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001 Matthew R. Green 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: netbsd32_sysctl.c,v 1.1.4.6 2002/06/20 03:43:11 nathanw Exp $"); 33 34 #if defined(_KERNEL_OPT) 35 #include "opt_ddb.h" 36 #endif 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/kernel.h> 41 #include <sys/malloc.h> 42 #include <sys/mount.h> 43 #include <sys/stat.h> 44 #include <sys/time.h> 45 #include <sys/vnode.h> 46 #include <sys/sa.h> 47 #include <sys/syscallargs.h> 48 #include <sys/proc.h> 49 #define __SYSCTL_PRIVATE 50 #include <sys/sysctl.h> 51 52 #include <uvm/uvm_extern.h> 53 54 #include <compat/netbsd32/netbsd32.h> 55 #include <compat/netbsd32/netbsd32_syscall.h> 56 #include <compat/netbsd32/netbsd32_syscallargs.h> 57 #include <compat/netbsd32/netbsd32_conv.h> 58 59 #if defined(DDB) 60 #include <ddb/ddbvar.h> 61 #endif 62 63 int uvm_sysctl32(int *, u_int, void *, size_t *, void *, size_t, struct proc *); 64 int kern_sysctl32(int *, u_int, void *, size_t *, void *, size_t, struct proc *); 65 int hw_sysctl32(int *, u_int, void *, size_t *, void *, size_t, struct proc *); 66 67 /* 68 * uvm_sysctl32: sysctl hook into UVM system, handling special 32-bit 69 * sensitive calls. 70 */ 71 int 72 uvm_sysctl32(name, namelen, oldp, oldlenp, newp, newlen, p) 73 int *name; 74 u_int namelen; 75 void *oldp; 76 size_t *oldlenp; 77 void *newp; 78 size_t newlen; 79 struct proc *p; 80 { 81 struct netbsd32_loadavg av32; 82 83 /* all sysctl names at this level are terminal */ 84 if (namelen != 1) 85 return (ENOTDIR); /* overloaded */ 86 87 switch (name[0]) { 88 case VM_LOADAVG: 89 netbsd32_from_loadavg(&av32, &averunnable); 90 return (sysctl_rdstruct(oldp, oldlenp, newp, &av32, 91 sizeof(av32))); 92 93 default: 94 return (EOPNOTSUPP); 95 } 96 /* NOTREACHED */ 97 } 98 99 /* 100 * kern_sysctl32: sysctl hook into KERN system, handling special 32-bit 101 * sensitive calls. 102 */ 103 int 104 kern_sysctl32(name, namelen, oldp, oldlenp, newp, newlen, p) 105 int *name; 106 u_int namelen; 107 void *oldp; 108 size_t *oldlenp; 109 void *newp; 110 size_t newlen; 111 struct proc *p; 112 { 113 struct netbsd32_timeval bt32; 114 115 /* All sysctl names at this level, except for a few, are terminal. */ 116 switch (name[0]) { 117 #if 0 118 case KERN_PROC: 119 case KERN_PROC2: 120 case KERN_PROF: 121 case KERN_MBUF: 122 case KERN_PROC_ARGS: 123 case KERN_SYSVIPC_INFO: 124 /* Not terminal. */ 125 break; 126 #endif 127 default: 128 if (namelen != 1) 129 return (ENOTDIR); /* overloaded */ 130 } 131 132 switch (name[0]) { 133 case KERN_BOOTTIME: 134 netbsd32_from_timeval(&boottime, &bt32); 135 return (sysctl_rdstruct(oldp, oldlenp, newp, &bt32, 136 sizeof(struct netbsd32_timeval))); 137 138 default: 139 return (EOPNOTSUPP); 140 } 141 /* NOTREACHED */ 142 } 143 144 /* 145 * hardware related system variables. 146 */ 147 int 148 hw_sysctl32(int *name, u_int namelen, void *oldp, size_t *oldlenp, 149 void *newp, size_t newlen, struct proc *p) 150 { 151 extern char machine_arch32[]; 152 153 switch (name[0]) { 154 case HW_MACHINE_ARCH: 155 return (sysctl_rdstring(oldp, oldlenp, newp, machine_arch32)); 156 default: 157 return (EOPNOTSUPP); 158 } 159 /* NOTREACHED */ 160 } 161 162 int 163 netbsd32___sysctl(p, v, retval) 164 struct proc *p; 165 void *v; 166 register_t *retval; 167 { 168 struct netbsd32___sysctl_args /* { 169 syscallarg(netbsd32_intp) name; 170 syscallarg(u_int) namelen; 171 syscallarg(netbsd32_voidp) old; 172 syscallarg(netbsd32_size_tp) oldlenp; 173 syscallarg(netbsd32_voidp) new; 174 syscallarg(netbsd32_size_t) newlen; 175 } */ *uap = v; 176 int error; 177 netbsd32_size_t savelen = 0; 178 size_t oldlen = 0; 179 sysctlfn *fn; 180 int name[CTL_MAXNAME]; 181 182 /* 183 * Some of these sysctl functions do their own copyin/copyout. 184 * We need to disable or emulate the ones that need their 185 * arguments converted. 186 */ 187 188 if (SCARG(uap, new) != NULL && 189 (error = suser(p->p_ucred, &p->p_acflag))) 190 return (error); 191 /* 192 * all top-level sysctl names are non-terminal 193 */ 194 if (SCARG(uap, namelen) > CTL_MAXNAME || SCARG(uap, namelen) < 2) 195 return (EINVAL); 196 error = copyin((caddr_t)(u_long)SCARG(uap, name), &name, 197 SCARG(uap, namelen) * sizeof(int)); 198 if (error) 199 return (error); 200 201 switch (name[0]) { 202 case CTL_KERN: 203 switch (name[1]) { 204 #if 0 205 case KERN_FILE: 206 case KERN_NTPTIME: 207 case KERN_SYSVIPC_INFO: 208 #endif 209 case KERN_BOOTTIME: 210 fn = kern_sysctl32; 211 break; 212 default: 213 fn = kern_sysctl; 214 break; 215 } 216 break; 217 case CTL_HW: 218 switch (name[1]) { 219 case HW_MACHINE_ARCH: 220 fn = hw_sysctl32; 221 break; 222 default: 223 fn = hw_sysctl; 224 break; 225 } 226 break; 227 case CTL_VM: 228 switch (name[1]) { 229 case VM_LOADAVG: 230 fn = uvm_sysctl32; /* need to convert a `long' */ 231 break; 232 default: 233 fn = uvm_sysctl; 234 break; 235 } 236 break; 237 case CTL_NET: 238 fn = net_sysctl; 239 break; 240 case CTL_VFS: 241 fn = vfs_sysctl; 242 break; 243 case CTL_MACHDEP: 244 fn = cpu_sysctl; 245 break; 246 #ifdef DEBUG 247 case CTL_DEBUG: 248 fn = debug_sysctl; 249 break; 250 #endif 251 #ifdef DDB 252 case CTL_DDB: 253 fn = ddb_sysctl; 254 break; 255 #endif 256 case CTL_PROC: 257 fn = proc_sysctl; 258 break; 259 default: 260 return (EOPNOTSUPP); 261 } 262 263 /* 264 * XXX Hey, we wire `old', but what about `new'? 265 */ 266 267 if (SCARG(uap, oldlenp) && 268 (error = copyin((caddr_t)(u_long)SCARG(uap, oldlenp), &savelen, 269 sizeof(savelen)))) 270 return (error); 271 if (SCARG(uap, old) != NULL) { 272 error = lockmgr(&sysctl_memlock, LK_EXCLUSIVE, NULL); 273 if (error) 274 return (error); 275 error = uvm_vslock(p, (void *)(vaddr_t)SCARG(uap, old), savelen, 276 VM_PROT_WRITE); 277 if (error) { 278 (void) lockmgr(&sysctl_memlock, LK_RELEASE, NULL); 279 return error; 280 } 281 oldlen = savelen; 282 } 283 error = (*fn)(name + 1, SCARG(uap, namelen) - 1, 284 (void *)(u_long)SCARG(uap, old), &oldlen, 285 (void *)(u_long)SCARG(uap, new), SCARG(uap, newlen), p); 286 if (SCARG(uap, old) != NULL) { 287 uvm_vsunlock(p, (void *)(u_long)SCARG(uap, old), savelen); 288 (void) lockmgr(&sysctl_memlock, LK_RELEASE, NULL); 289 } 290 savelen = oldlen; 291 if (error) 292 return (error); 293 if (SCARG(uap, oldlenp)) 294 error = copyout(&savelen, 295 (caddr_t)(u_long)SCARG(uap, oldlenp), sizeof(savelen)); 296 return (error); 297 } 298
Indexes created Mon Sep 29 21:09:56 GMT 2025