netbsd32_sysctl.c revision 1.5.4.1
1 /* $NetBSD: netbsd32_sysctl.c,v 1.5.4.1 2002/03/11 18:28:52 thorpej 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 1.5.4.1 2002/03/11 18:28:52 thorpej 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/syscallargs.h> 47 #include <sys/proc.h> 48 #include <sys/mutex.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 66 /* 67 * uvm_sysctl32: sysctl hook into UVM system, handling special 32-bit 68 * sensitive calls. 69 */ 70 int 71 uvm_sysctl32(name, namelen, oldp, oldlenp, newp, newlen, p) 72 int *name; 73 u_int namelen; 74 void *oldp; 75 size_t *oldlenp; 76 void *newp; 77 size_t newlen; 78 struct proc *p; 79 { 80 struct netbsd32_loadavg av32; 81 82 /* all sysctl names at this level are terminal */ 83 if (namelen != 1) 84 return (ENOTDIR); /* overloaded */ 85 86 switch (name[0]) { 87 case VM_LOADAVG: 88 netbsd32_from_loadavg(&av32, &averunnable); 89 return (sysctl_rdstruct(oldp, oldlenp, newp, &av32, 90 sizeof(av32))); 91 92 default: 93 return (EOPNOTSUPP); 94 } 95 /* NOTREACHED */ 96 } 97 98 /* 99 * kern_sysctl32: sysctl hook into KERN system, handling special 32-bit 100 * sensitive calls. 101 */ 102 int 103 kern_sysctl32(name, namelen, oldp, oldlenp, newp, newlen, p) 104 int *name; 105 u_int namelen; 106 void *oldp; 107 size_t *oldlenp; 108 void *newp; 109 size_t newlen; 110 struct proc *p; 111 { 112 struct netbsd32_timeval bt32; 113 114 /* All sysctl names at this level, except for a few, are terminal. */ 115 switch (name[0]) { 116 #if 0 117 case KERN_PROC: 118 case KERN_PROC2: 119 case KERN_PROF: 120 case KERN_MBUF: 121 case KERN_PROC_ARGS: 122 case KERN_SYSVIPC_INFO: 123 /* Not terminal. */ 124 break; 125 #endif 126 default: 127 if (namelen != 1) 128 return (ENOTDIR); /* overloaded */ 129 } 130 131 switch (name[0]) { 132 case KERN_BOOTTIME: 133 netbsd32_from_timeval(&boottime, &bt32); 134 return (sysctl_rdstruct(oldp, oldlenp, newp, &bt32, 135 sizeof(struct netbsd32_timeval))); 136 137 default: 138 return (EOPNOTSUPP); 139 } 140 /* NOTREACHED */ 141 } 142 143 int 144 netbsd32___sysctl(p, v, retval) 145 struct proc *p; 146 void *v; 147 register_t *retval; 148 { 149 struct netbsd32___sysctl_args /* { 150 syscallarg(netbsd32_intp) name; 151 syscallarg(u_int) namelen; 152 syscallarg(netbsd32_voidp) old; 153 syscallarg(netbsd32_size_tp) oldlenp; 154 syscallarg(netbsd32_voidp) new; 155 syscallarg(netbsd32_size_t) newlen; 156 } */ *uap = v; 157 int error; 158 netbsd32_size_t savelen = 0; 159 size_t oldlen = 0; 160 sysctlfn *fn; 161 int name[CTL_MAXNAME]; 162 163 /* 164 * Some of these sysctl functions do their own copyin/copyout. 165 * We need to disable or emulate the ones that need their 166 * arguments converted. 167 */ 168 169 if (SCARG(uap, new) != NULL && 170 (error = suser(p->p_ucred, &p->p_acflag))) 171 return (error); 172 /* 173 * all top-level sysctl names are non-terminal 174 */ 175 if (SCARG(uap, namelen) > CTL_MAXNAME || SCARG(uap, namelen) < 2) 176 return (EINVAL); 177 error = copyin((caddr_t)(u_long)SCARG(uap, name), &name, 178 SCARG(uap, namelen) * sizeof(int)); 179 if (error) 180 return (error); 181 182 switch (name[0]) { 183 case CTL_KERN: 184 switch (name[1]) { 185 #if 0 186 case KERN_FILE: 187 case KERN_NTPTIME: 188 case KERN_SYSVIPC_INFO: 189 #endif 190 case KERN_BOOTTIME: 191 fn = kern_sysctl32; 192 break; 193 default: 194 fn = kern_sysctl; 195 break; 196 } 197 break; 198 case CTL_HW: 199 fn = hw_sysctl; 200 break; 201 case CTL_VM: 202 switch (name[1]) { 203 case VM_LOADAVG: 204 fn = uvm_sysctl32; /* need to convert a `long' */ 205 break; 206 default: 207 fn = uvm_sysctl; 208 break; 209 } 210 break; 211 case CTL_NET: 212 fn = net_sysctl; 213 break; 214 case CTL_VFS: 215 fn = vfs_sysctl; 216 break; 217 case CTL_MACHDEP: 218 fn = cpu_sysctl; 219 break; 220 #ifdef DEBUG 221 case CTL_DEBUG: 222 fn = debug_sysctl; 223 break; 224 #endif 225 #ifdef DDB 226 case CTL_DDB: 227 fn = ddb_sysctl; 228 break; 229 #endif 230 case CTL_PROC: 231 fn = proc_sysctl; 232 break; 233 default: 234 return (EOPNOTSUPP); 235 } 236 237 /* 238 * XXX Hey, we wire `old', but what about `new'? 239 */ 240 241 if (SCARG(uap, oldlenp) && 242 (error = copyin((caddr_t)(u_long)SCARG(uap, oldlenp), &savelen, 243 sizeof(savelen)))) 244 return (error); 245 if (SCARG(uap, old) != NULL) { 246 mutex_enter(&sysctl_memlock); 247 error = uvm_vslock(p, (void *)(vaddr_t)SCARG(uap, old), savelen, 248 VM_PROT_WRITE); 249 if (error) { 250 mutex_exit(&sysctl_memlock); 251 return error; 252 } 253 oldlen = savelen; 254 } 255 error = (*fn)(name + 1, SCARG(uap, namelen) - 1, 256 (void *)(u_long)SCARG(uap, old), &oldlen, 257 (void *)(u_long)SCARG(uap, new), SCARG(uap, newlen), p); 258 if (SCARG(uap, old) != NULL) { 259 uvm_vsunlock(p, (void *)(u_long)SCARG(uap, old), savelen); 260 mutex_exit(&sysctl_memlock); 261 } 262 savelen = oldlen; 263 if (error) 264 return (error); 265 if (SCARG(uap, oldlenp)) 266 error = copyout(&savelen, 267 (caddr_t)(u_long)SCARG(uap, oldlenp), sizeof(savelen)); 268 return (error); 269 } 270
Indexes created Mon Sep 29 21:09:56 GMT 2025