1 /* $NetBSD: kern_info_43.c,v 1.33 2008/04/24 18:39:22 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 1.33 2008/04/24 18:39:22 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, const void *v, register_t *retval) 62 { 63 struct proc *p = l->l_proc; 64 65 mutex_enter(p->p_lock); 66 *retval = min((int)p->p_rlimit[RLIMIT_NOFILE].rlim_cur, maxfiles); 67 mutex_exit(p->p_lock); 68 return (0); 69 } 70 71 72 /* ARGSUSED */ 73 int 74 compat_43_sys_gethostid(struct lwp *l, const void *v, register_t *retval) 75 { 76 77 *(int32_t *)retval = hostid; 78 return (0); 79 } 80 81 82 /*ARGSUSED*/ 83 int 84 compat_43_sys_gethostname(struct lwp *l, const struct compat_43_sys_gethostname_args *uap, register_t *retval) 85 { 86 /* { 87 syscallarg(char *) hostname; 88 syscallarg(u_int) len; 89 } */ 90 int name[2]; 91 size_t sz; 92 93 name[0] = CTL_KERN; 94 name[1] = KERN_HOSTNAME; 95 sz = SCARG(uap, len); 96 return (old_sysctl(&name[0], 2, SCARG(uap, hostname), &sz, 0, 0, l)); 97 } 98 99 #define KINFO_PROC (0<<8) 100 #define KINFO_RT (1<<8) 101 #define KINFO_VNODE (2<<8) 102 #define KINFO_FILE (3<<8) 103 #define KINFO_METER (4<<8) 104 #define KINFO_LOADAVG (5<<8) 105 #define KINFO_CLOCKRATE (6<<8) 106 #define KINFO_BSDI_SYSINFO (101<<8) 107 108 109 /* 110 * The string data is appended to the end of the bsdi_si structure during 111 * copyout. The "char *" offsets in the bsdi_si struct are relative to the 112 * base of the bsdi_si struct. 113 */ 114 struct bsdi_si { 115 char *machine; 116 char *cpu_model; 117 long ncpu; 118 long cpuspeed; 119 long hwflags; 120 u_long physmem; 121 u_long usermem; 122 u_long pagesize; 123 124 char *ostype; 125 char *osrelease; 126 long os_revision; 127 long posix1_version; 128 char *version; 129 130 long hz; 131 long profhz; 132 int ngroups_max; 133 long arg_max; 134 long open_max; 135 long child_max; 136 137 struct timeval boottime; 138 char *hostname; 139 }; 140 141 int 142 compat_43_sys_getkerninfo(struct lwp *l, const struct compat_43_sys_getkerninfo_args *uap, register_t *retval) 143 { 144 /* { 145 syscallarg(int) op; 146 syscallarg(char *) where; 147 syscallarg(int *) size; 148 syscallarg(int) arg; 149 } */ 150 int error, name[6]; 151 size_t size; 152 153 if (SCARG(uap, size) && (error = copyin((void *)SCARG(uap, size), 154 (void *)&size, sizeof(size)))) 155 return (error); 156 157 switch (SCARG(uap, op) & 0xff00) { 158 159 case KINFO_RT: 160 name[0] = CTL_NET; 161 name[1] = PF_ROUTE; 162 name[2] = 0; 163 name[3] = (SCARG(uap, op) & 0xff0000) >> 16; 164 name[4] = SCARG(uap, op) & 0xff; 165 name[5] = SCARG(uap, arg); 166 error = old_sysctl(&name[0], 6, SCARG(uap, where), &size, 167 NULL, 0, l); 168 break; 169 170 case KINFO_VNODE: 171 name[0] = CTL_KERN; 172 name[1] = KERN_VNODE; 173 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size, 174 NULL, 0, l); 175 break; 176 177 case KINFO_PROC: 178 name[0] = CTL_KERN; 179 name[1] = KERN_PROC; 180 name[2] = SCARG(uap, op) & 0xff; 181 name[3] = SCARG(uap, arg); 182 error = old_sysctl(&name[0], 4, SCARG(uap, where), &size, 183 NULL, 0, l); 184 break; 185 186 case KINFO_FILE: 187 name[0] = CTL_KERN; 188 name[1] = KERN_FILE; 189 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size, 190 NULL, 0, l); 191 break; 192 193 case KINFO_METER: 194 name[0] = CTL_VM; 195 name[1] = VM_METER; 196 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size, 197 NULL, 0, l); 198 break; 199 200 case KINFO_LOADAVG: 201 name[0] = CTL_VM; 202 name[1] = VM_LOADAVG; 203 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size, 204 NULL, 0, l); 205 break; 206 207 case KINFO_CLOCKRATE: 208 name[0] = CTL_KERN; 209 name[1] = KERN_CLOCKRATE; 210 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size, 211 NULL, 0, l); 212 break; 213 214 215 case KINFO_BSDI_SYSINFO: 216 { 217 size_t len; 218 struct bsdi_si *usi = 219 (struct bsdi_si *) SCARG(uap, where); 220 struct bsdi_si ksi; 221 char *us = (char *) &usi[1]; 222 223 if (usi == NULL) { 224 size = sizeof(ksi) + 225 strlen(ostype) + strlen(cpu_model) + 226 strlen(osrelease) + strlen(machine) + 227 strlen(version) + strlen(hostname) + 6; 228 error = 0; 229 break; 230 } 231 232 #define COPY(fld) \ 233 ksi.fld = us - (u_long) usi; \ 234 if ((error = copyoutstr(fld, us, 1024, &len)) != 0)\ 235 return error; \ 236 us += len 237 238 COPY(machine); 239 COPY(cpu_model); 240 ksi.ncpu = ncpu; /* XXX */ 241 ksi.cpuspeed = 40; /* XXX */ 242 ksi.hwflags = 0; /* XXX */ 243 ksi.physmem = ctob(physmem); 244 ksi.usermem = ctob(physmem); /* XXX */ 245 ksi.pagesize = PAGE_SIZE; 246 247 COPY(ostype); 248 COPY(osrelease); 249 ksi.os_revision = NetBSD; /* XXX */ 250 ksi.posix1_version = _POSIX_VERSION; 251 COPY(version); /* XXX */ 252 253 ksi.hz = hz; 254 ksi.profhz = profhz; 255 ksi.ngroups_max = NGROUPS_MAX; 256 ksi.arg_max = ARG_MAX; 257 ksi.open_max = OPEN_MAX; 258 ksi.child_max = CHILD_MAX; 259 260 ksi.boottime = boottime; 261 COPY(hostname); 262 263 size = (us - (char *) &usi[1]) + sizeof(ksi); 264 265 if ((error = copyout(&ksi, usi, sizeof(ksi))) != 0) 266 return error; 267 } 268 break; 269 270 default: 271 return (EOPNOTSUPP); 272 } 273 if (error) 274 return (error); 275 *retval = size; 276 if (SCARG(uap, size)) 277 error = copyout((void *)&size, (void *)SCARG(uap, size), 278 sizeof(size)); 279 return (error); 280 } 281 282 283 /* ARGSUSED */ 284 int 285 compat_43_sys_sethostid(struct lwp *l, const struct compat_43_sys_sethostid_args *uap, register_t *retval) 286 { 287 long uhostid; 288 int name[2]; 289 290 uhostid = SCARG(uap, hostid); 291 name[0] = CTL_KERN; 292 name[1] = KERN_HOSTID; 293 294 return (old_sysctl(&name[0], 2, 0, 0, &uhostid, sizeof(long), l)); 295 } 296 297 298 /* ARGSUSED */ 299 int 300 compat_43_sys_sethostname(struct lwp *l, const struct compat_43_sys_sethostname_args *uap, register_t *retval) 301 { 302 int name[2]; 303 304 name[0] = CTL_KERN; 305 name[1] = KERN_HOSTNAME; 306 return (old_sysctl(&name[0], 2, 0, 0, SCARG(uap, hostname), 307 SCARG(uap, len), l)); 308 } 309