kern_info_43.c revision 1.35.28.1
1 /* $NetBSD: kern_info_43.c,v 1.35.28.1 2018/04/17 00:02:58 pgoyette 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 1.35.28.1 2018/04/17 00:02:58 pgoyette 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 #include <sys/cpu.h> 54 55 #include <uvm/uvm_extern.h> 56 #include <sys/sysctl.h> 57 58 #include <sys/mount.h> 59 #include <sys/syscall.h> 60 #include <sys/syscallvar.h> 61 #include <sys/syscallargs.h> 62 #include <compat/sys/time.h> 63 64 #include <compat/common/compat_mod.h> 65 66 static struct syscall_package kern_info_43_syscalls[] = { 67 { SYS_compat_43_ogetdtablesize, 0, 68 (sy_call_t *)compat_43_sys_getdtablesize }, 69 { SYS_compat_43_ogethostid, 0, (sy_call_t *)compat_43_sys_gethostid }, 70 { SYS_compat_43_ogethostname, 0, 71 (sy_call_t *)compat_43_sys_gethostname }, 72 { SYS_compat_43_ogetkerninfo, 0, 73 (sy_call_t *)compat_43_sys_getkerninfo }, 74 { SYS_compat_43_osethostid, 0, (sy_call_t *)compat_43_sys_sethostid }, 75 { SYS_compat_43_osethostname, 0, 76 (sy_call_t *)compat_43_sys_sethostname }, 77 { 0, 0, NULL } 78 }; 79 80 int 81 compat_43_sys_getdtablesize(struct lwp *l, const void *v, register_t *retval) 82 { 83 struct proc *p = l->l_proc; 84 85 mutex_enter(p->p_lock); 86 *retval = min((int)p->p_rlimit[RLIMIT_NOFILE].rlim_cur, maxfiles); 87 mutex_exit(p->p_lock); 88 return (0); 89 } 90 91 92 /* ARGSUSED */ 93 int 94 compat_43_sys_gethostid(struct lwp *l, const void *v, register_t *retval) 95 { 96 97 *(int32_t *)retval = hostid; 98 return (0); 99 } 100 101 102 /*ARGSUSED*/ 103 int 104 compat_43_sys_gethostname(struct lwp *l, const struct compat_43_sys_gethostname_args *uap, register_t *retval) 105 { 106 /* { 107 syscallarg(char *) hostname; 108 syscallarg(u_int) len; 109 } */ 110 int name[2]; 111 size_t sz; 112 113 name[0] = CTL_KERN; 114 name[1] = KERN_HOSTNAME; 115 sz = SCARG(uap, len); 116 return (old_sysctl(&name[0], 2, SCARG(uap, hostname), &sz, 0, 0, l)); 117 } 118 119 #define KINFO_PROC (0<<8) 120 #define KINFO_RT (1<<8) 121 #define KINFO_VNODE (2<<8) 122 #define KINFO_FILE (3<<8) 123 #define KINFO_METER (4<<8) 124 #define KINFO_LOADAVG (5<<8) 125 #define KINFO_CLOCKRATE (6<<8) 126 #define KINFO_BSDI_SYSINFO (101<<8) 127 128 129 /* 130 * The string data is appended to the end of the bsdi_si structure during 131 * copyout. The "char *" offsets in the bsdi_si struct are relative to the 132 * base of the bsdi_si struct. 133 */ 134 struct bsdi_si { 135 char *machine; 136 char *cpu_model; 137 long ncpu; 138 long cpuspeed; 139 long hwflags; 140 u_long physmem; 141 u_long usermem; 142 u_long pagesize; 143 144 char *ostype; 145 char *osrelease; 146 long os_revision; 147 long posix1_version; 148 char *version; 149 150 long hz; 151 long profhz; 152 int ngroups_max; 153 long arg_max; 154 long open_max; 155 long child_max; 156 157 struct timeval50 boottime; 158 char *hostname; 159 }; 160 161 int 162 compat_43_sys_getkerninfo(struct lwp *l, const struct compat_43_sys_getkerninfo_args *uap, register_t *retval) 163 { 164 /* { 165 syscallarg(int) op; 166 syscallarg(char *) where; 167 syscallarg(int *) size; 168 syscallarg(int) arg; 169 } */ 170 int error, name[6]; 171 size_t size; 172 173 if (SCARG(uap, size) && (error = copyin((void *)SCARG(uap, size), 174 (void *)&size, sizeof(size)))) 175 return (error); 176 177 switch (SCARG(uap, op) & 0xff00) { 178 179 case KINFO_RT: 180 name[0] = CTL_NET; 181 name[1] = PF_ROUTE; 182 name[2] = 0; 183 name[3] = (SCARG(uap, op) & 0xff0000) >> 16; 184 name[4] = SCARG(uap, op) & 0xff; 185 name[5] = SCARG(uap, arg); 186 error = old_sysctl(&name[0], 6, SCARG(uap, where), &size, 187 NULL, 0, l); 188 break; 189 190 case KINFO_VNODE: 191 name[0] = CTL_KERN; 192 name[1] = KERN_VNODE; 193 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size, 194 NULL, 0, l); 195 break; 196 197 case KINFO_PROC: 198 name[0] = CTL_KERN; 199 name[1] = KERN_PROC; 200 name[2] = SCARG(uap, op) & 0xff; 201 name[3] = SCARG(uap, arg); 202 error = old_sysctl(&name[0], 4, SCARG(uap, where), &size, 203 NULL, 0, l); 204 break; 205 206 case KINFO_FILE: 207 name[0] = CTL_KERN; 208 name[1] = KERN_FILE; 209 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size, 210 NULL, 0, l); 211 break; 212 213 case KINFO_METER: 214 name[0] = CTL_VM; 215 name[1] = VM_METER; 216 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size, 217 NULL, 0, l); 218 break; 219 220 case KINFO_LOADAVG: 221 name[0] = CTL_VM; 222 name[1] = VM_LOADAVG; 223 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size, 224 NULL, 0, l); 225 break; 226 227 case KINFO_CLOCKRATE: 228 name[0] = CTL_KERN; 229 name[1] = KERN_CLOCKRATE; 230 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size, 231 NULL, 0, l); 232 break; 233 234 235 case KINFO_BSDI_SYSINFO: 236 { 237 size_t len; 238 struct bsdi_si *usi = 239 (struct bsdi_si *) SCARG(uap, where); 240 struct bsdi_si ksi; 241 struct timeval tv; 242 const char *cpu_model = cpu_getmodel(); 243 char *us = (char *) &usi[1]; 244 245 if (usi == NULL) { 246 size = sizeof(ksi) + 247 strlen(ostype) + strlen(cpu_model) + 248 strlen(osrelease) + strlen(machine) + 249 strlen(version) + strlen(hostname) + 6; 250 error = 0; 251 break; 252 } 253 254 #define COPY(fld) \ 255 ksi.fld = us - (u_long) usi; \ 256 if ((error = copyoutstr(fld, us, 1024, &len)) != 0)\ 257 return error; \ 258 us += len 259 260 COPY(machine); 261 COPY(cpu_model); 262 ksi.ncpu = ncpu; /* XXX */ 263 ksi.cpuspeed = 40; /* XXX */ 264 ksi.hwflags = 0; /* XXX */ 265 ksi.physmem = ctob(physmem); 266 ksi.usermem = ctob(physmem); /* XXX */ 267 ksi.pagesize = PAGE_SIZE; 268 269 COPY(ostype); 270 COPY(osrelease); 271 ksi.os_revision = NetBSD; /* XXX */ 272 ksi.posix1_version = _POSIX_VERSION; 273 COPY(version); /* XXX */ 274 275 ksi.hz = hz; 276 ksi.profhz = profhz; 277 ksi.ngroups_max = NGROUPS_MAX; 278 ksi.arg_max = ARG_MAX; 279 ksi.open_max = OPEN_MAX; 280 ksi.child_max = CHILD_MAX; 281 282 TIMESPEC_TO_TIMEVAL(&tv, &boottime); 283 timeval_to_timeval50(&tv, &ksi.boottime); 284 COPY(hostname); 285 286 size = (us - (char *) &usi[1]) + sizeof(ksi); 287 288 if ((error = copyout(&ksi, usi, sizeof(ksi))) != 0) 289 return error; 290 } 291 break; 292 293 default: 294 return (EOPNOTSUPP); 295 } 296 if (error) 297 return (error); 298 *retval = size; 299 if (SCARG(uap, size)) 300 error = copyout((void *)&size, (void *)SCARG(uap, size), 301 sizeof(size)); 302 return (error); 303 } 304 305 306 /* ARGSUSED */ 307 int 308 compat_43_sys_sethostid(struct lwp *l, const struct compat_43_sys_sethostid_args *uap, register_t *retval) 309 { 310 long uhostid; 311 int name[2]; 312 313 uhostid = SCARG(uap, hostid); 314 name[0] = CTL_KERN; 315 name[1] = KERN_HOSTID; 316 317 return (old_sysctl(&name[0], 2, 0, 0, &uhostid, sizeof(long), l)); 318 } 319 320 321 /* ARGSUSED */ 322 int 323 compat_43_sys_sethostname(struct lwp *l, const struct compat_43_sys_sethostname_args *uap, register_t *retval) 324 { 325 int name[2]; 326 327 name[0] = CTL_KERN; 328 name[1] = KERN_HOSTNAME; 329 return (old_sysctl(&name[0], 2, 0, 0, SCARG(uap, hostname), 330 SCARG(uap, len), l)); 331 } 332 333 int 334 kern_info_43_init(void) 335 { 336 337 return syscall_establish(NULL, kern_info_43_syscalls); 338 } 339 340 int 341 kern_info_43_fini(void) 342 { 343 344 return syscall_disestablish(NULL, kern_info_43_syscalls); 345 } 346
Indexes created Tue Oct 14 15:09:51 GMT 2025