kern_info_43.c revision 1.28
1 /* $NetBSD: kern_info_43.c,v 1.28 2007/02/15 20:32:48 ad Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1991, 1993 5 * The Regents of the University of California. 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)subr_xxx.c 8.1 (Berkeley) 6/10/93 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: kern_info_43.c,v 1.28 2007/02/15 20:32:48 ad Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/filedesc.h> 40 #include <sys/kernel.h> 41 #include <sys/vnode.h> 42 #include <sys/proc.h> 43 #include <sys/file.h> 44 #include <sys/socket.h> 45 #include <sys/socketvar.h> 46 #include <sys/stat.h> 47 #include <sys/ioctl.h> 48 #include <sys/fcntl.h> 49 #include <sys/syslog.h> 50 #include <sys/unistd.h> 51 #include <sys/resourcevar.h> 52 #include <sys/kauth.h> 53 54 #include <uvm/uvm_extern.h> 55 #include <sys/sysctl.h> 56 57 #include <sys/mount.h> 58 #include <sys/syscallargs.h> 59 60 int 61 compat_43_sys_getdtablesize(struct lwp *l, void *v, register_t *retval) 62 { 63 struct proc *p = l->l_proc; 64 65 *retval = min((int)p->p_rlimit[RLIMIT_NOFILE].rlim_cur, maxfiles); 66 return (0); 67 } 68 69 70 /* ARGSUSED */ 71 int 72 compat_43_sys_gethostid(struct lwp *l, void *v, 73 register_t *retval) 74 { 75 76 *(int32_t *)retval = hostid; 77 return (0); 78 } 79 80 81 /*ARGSUSED*/ 82 int 83 compat_43_sys_gethostname(struct lwp *l, void *v, register_t *retval) 84 { 85 struct compat_43_sys_gethostname_args /* { 86 syscallarg(char *) hostname; 87 syscallarg(u_int) len; 88 } */ *uap = v; 89 int name[2]; 90 size_t sz; 91 92 name[0] = CTL_KERN; 93 name[1] = KERN_HOSTNAME; 94 sz = SCARG(uap, len); 95 return (old_sysctl(&name[0], 2, SCARG(uap, hostname), &sz, 0, 0, l)); 96 } 97 98 #define KINFO_PROC (0<<8) 99 #define KINFO_RT (1<<8) 100 #define KINFO_VNODE (2<<8) 101 #define KINFO_FILE (3<<8) 102 #define KINFO_METER (4<<8) 103 #define KINFO_LOADAVG (5<<8) 104 #define KINFO_CLOCKRATE (6<<8) 105 #define KINFO_BSDI_SYSINFO (101<<8) 106 107 108 /* 109 * The string data is appended to the end of the bsdi_si structure during 110 * copyout. The "char *" offsets in the bsdi_si struct are relative to the 111 * base of the bsdi_si struct. 112 */ 113 struct bsdi_si { 114 char *machine; 115 char *cpu_model; 116 long ncpu; 117 long cpuspeed; 118 long hwflags; 119 u_long physmem; 120 u_long usermem; 121 u_long pagesize; 122 123 char *ostype; 124 char *osrelease; 125 long os_revision; 126 long posix1_version; 127 char *version; 128 129 long hz; 130 long profhz; 131 int ngroups_max; 132 long arg_max; 133 long open_max; 134 long child_max; 135 136 struct timeval boottime; 137 char *hostname; 138 }; 139 140 int 141 compat_43_sys_getkerninfo(struct lwp *l, void *v, register_t *retval) 142 { 143 struct compat_43_sys_getkerninfo_args /* { 144 syscallarg(int) op; 145 syscallarg(char *) where; 146 syscallarg(int *) size; 147 syscallarg(int) arg; 148 } */ *uap = v; 149 int error, name[6]; 150 size_t size; 151 152 if (SCARG(uap, size) && (error = copyin((caddr_t)SCARG(uap, size), 153 (caddr_t)&size, sizeof(size)))) 154 return (error); 155 156 switch (SCARG(uap, op) & 0xff00) { 157 158 case KINFO_RT: 159 name[0] = CTL_NET; 160 name[1] = PF_ROUTE; 161 name[2] = 0; 162 name[3] = (SCARG(uap, op) & 0xff0000) >> 16; 163 name[4] = SCARG(uap, op) & 0xff; 164 name[5] = SCARG(uap, arg); 165 error = old_sysctl(&name[0], 6, SCARG(uap, where), &size, 166 NULL, 0, l); 167 break; 168 169 case KINFO_VNODE: 170 name[0] = CTL_KERN; 171 name[1] = KERN_VNODE; 172 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size, 173 NULL, 0, l); 174 break; 175 176 case KINFO_PROC: 177 name[0] = CTL_KERN; 178 name[1] = KERN_PROC; 179 name[2] = SCARG(uap, op) & 0xff; 180 name[3] = SCARG(uap, arg); 181 error = old_sysctl(&name[0], 4, SCARG(uap, where), &size, 182 NULL, 0, l); 183 break; 184 185 case KINFO_FILE: 186 name[0] = CTL_KERN; 187 name[1] = KERN_FILE; 188 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size, 189 NULL, 0, l); 190 break; 191 192 case KINFO_METER: 193 name[0] = CTL_VM; 194 name[1] = VM_METER; 195 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size, 196 NULL, 0, l); 197 break; 198 199 case KINFO_LOADAVG: 200 name[0] = CTL_VM; 201 name[1] = VM_LOADAVG; 202 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size, 203 NULL, 0, l); 204 break; 205 206 case KINFO_CLOCKRATE: 207 name[0] = CTL_KERN; 208 name[1] = KERN_CLOCKRATE; 209 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size, 210 NULL, 0, l); 211 break; 212 213 214 case KINFO_BSDI_SYSINFO: 215 { 216 size_t len; 217 struct bsdi_si *usi = 218 (struct bsdi_si *) SCARG(uap, where); 219 struct bsdi_si ksi; 220 char *us = (char *) &usi[1]; 221 222 if (usi == NULL) { 223 size = sizeof(ksi) + 224 strlen(ostype) + strlen(cpu_model) + 225 strlen(osrelease) + strlen(machine) + 226 strlen(version) + strlen(hostname) + 6; 227 error = 0; 228 break; 229 } 230 231 #define COPY(fld) \ 232 ksi.fld = us - (u_long) usi; \ 233 if ((error = copyoutstr(fld, us, 1024, &len)) != 0)\ 234 return error; \ 235 us += len 236 237 COPY(machine); 238 COPY(cpu_model); 239 ksi.ncpu = ncpu; /* XXX */ 240 ksi.cpuspeed = 40; /* XXX */ 241 ksi.hwflags = 0; /* XXX */ 242 ksi.physmem = ctob(physmem); 243 ksi.usermem = ctob(physmem); /* XXX */ 244 ksi.pagesize = PAGE_SIZE; 245 246 COPY(ostype); 247 COPY(osrelease); 248 ksi.os_revision = NetBSD; /* XXX */ 249 ksi.posix1_version = _POSIX_VERSION; 250 COPY(version); /* XXX */ 251 252 ksi.hz = hz; 253 ksi.profhz = profhz; 254 ksi.ngroups_max = NGROUPS_MAX; 255 ksi.arg_max = ARG_MAX; 256 ksi.open_max = OPEN_MAX; 257 ksi.child_max = CHILD_MAX; 258 259 ksi.boottime = boottime; 260 COPY(hostname); 261 262 size = (us - (char *) &usi[1]) + sizeof(ksi); 263 264 if ((error = copyout(&ksi, usi, sizeof(ksi))) != 0) 265 return error; 266 } 267 break; 268 269 default: 270 return (EOPNOTSUPP); 271 } 272 if (error) 273 return (error); 274 *retval = size; 275 if (SCARG(uap, size)) 276 error = copyout((caddr_t)&size, (caddr_t)SCARG(uap, size), 277 sizeof(size)); 278 return (error); 279 } 280 281 282 /* ARGSUSED */ 283 int 284 compat_43_sys_sethostid(struct lwp *l, void *v, register_t *retval) 285 { 286 struct compat_43_sys_sethostid_args /* { 287 syscallarg(int32_t) hostid; 288 } */ *uap = v; 289 int error; 290 291 if ((error = kauth_authorize_generic(l->l_cred, 292 KAUTH_GENERIC_ISSUSER, NULL)) != 0) 293 return (error); 294 hostid = SCARG(uap, hostid); 295 return (0); 296 } 297 298 299 /* ARGSUSED */ 300 int 301 compat_43_sys_sethostname(struct lwp *l, void *v, register_t *retval) 302 { 303 struct compat_43_sys_sethostname_args *uap = v; 304 int name[2]; 305 306 name[0] = CTL_KERN; 307 name[1] = KERN_HOSTNAME; 308 return (old_sysctl(&name[0], 2, 0, 0, SCARG(uap, hostname), 309 SCARG(uap, len), l)); 310 } 311
Indexes created Tue Sep 23 14:10:03 GMT 2025