1 /* $NetBSD: kern_info_43.c,v 1.40 2021/09/07 11:43:02 riastradh 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 1.40 2021/09/07 11:43:02 riastradh Exp $"); 36 37 #if defined(_KERNEL_OPT) 38 #include "opt_compat_netbsd.h" 39 #endif 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/filedesc.h> 44 #include <sys/kernel.h> 45 #include <sys/vnode.h> 46 #include <sys/proc.h> 47 #include <sys/file.h> 48 #include <sys/socket.h> 49 #include <sys/socketvar.h> 50 #include <sys/stat.h> 51 #include <sys/ioctl.h> 52 #include <sys/fcntl.h> 53 #include <sys/syslog.h> 54 #include <sys/unistd.h> 55 #include <sys/resourcevar.h> 56 #include <sys/kauth.h> 57 #include <sys/cpu.h> 58 59 #include <uvm/uvm_extern.h> 60 #include <sys/sysctl.h> 61 62 #include <sys/mount.h> 63 #include <sys/syscall.h> 64 #include <sys/syscallvar.h> 65 #include <sys/syscallargs.h> 66 #include <compat/sys/time.h> 67 68 #include <compat/common/compat_mod.h> 69 70 static struct syscall_package kern_info_43_syscalls[] = { 71 { SYS_compat_43_ogetdtablesize, 0, 72 (sy_call_t *)compat_43_sys_getdtablesize }, 73 { SYS_compat_43_ogethostid, 0, (sy_call_t *)compat_43_sys_gethostid }, 74 { SYS_compat_43_ogethostname, 0, 75 (sy_call_t *)compat_43_sys_gethostname }, 76 { SYS_compat_43_ogetkerninfo, 0, 77 (sy_call_t *)compat_43_sys_getkerninfo }, 78 { SYS_compat_43_osethostid, 0, (sy_call_t *)compat_43_sys_sethostid }, 79 { SYS_compat_43_osethostname, 0, 80 (sy_call_t *)compat_43_sys_sethostname }, 81 { 0, 0, NULL } 82 }; 83 84 int 85 compat_43_sys_getdtablesize(struct lwp *l, const void *v, register_t *retval) 86 { 87 struct proc *p = l->l_proc; 88 89 mutex_enter(p->p_lock); 90 *retval = uimin((int)p->p_rlimit[RLIMIT_NOFILE].rlim_cur, maxfiles); 91 mutex_exit(p->p_lock); 92 return (0); 93 } 94 95 96 /* ARGSUSED */ 97 int 98 compat_43_sys_gethostid(struct lwp *l, const void *v, register_t *retval) 99 { 100 101 *(int32_t *)retval = hostid; 102 return (0); 103 } 104 105 106 /*ARGSUSED*/ 107 int 108 compat_43_sys_gethostname(struct lwp *l, const struct compat_43_sys_gethostname_args *uap, register_t *retval) 109 { 110 /* { 111 syscallarg(char *) hostname; 112 syscallarg(u_int) len; 113 } */ 114 int name[2]; 115 size_t sz; 116 117 name[0] = CTL_KERN; 118 name[1] = KERN_HOSTNAME; 119 sz = SCARG(uap, len); 120 return (old_sysctl(&name[0], 2, SCARG(uap, hostname), &sz, 0, 0, l)); 121 } 122 123 #define KINFO_PROC (0<<8) 124 #define KINFO_RT (1<<8) 125 #define KINFO_VNODE (2<<8) 126 #define KINFO_FILE (3<<8) 127 #define KINFO_METER (4<<8) 128 #define KINFO_LOADAVG (5<<8) 129 #define KINFO_CLOCKRATE (6<<8) 130 #define KINFO_BSDI_SYSINFO (101<<8) 131 132 133 /* 134 * The string data is appended to the end of the bsdi_si structure during 135 * copyout. The "char *" offsets in the bsdi_si struct are relative to the 136 * base of the bsdi_si struct. 137 */ 138 struct bsdi_si { 139 char *machine; 140 char *cpu_model; 141 long ncpu; 142 long cpuspeed; 143 long hwflags; 144 u_long physmem; 145 u_long usermem; 146 u_long pagesize; 147 148 char *ostype; 149 char *osrelease; 150 long os_revision; 151 long posix1_version; 152 char *version; 153 154 long hz; 155 long profhz; 156 int ngroups_max; 157 long arg_max; 158 long open_max; 159 long child_max; 160 161 struct timeval50 boottime; 162 char *hostname; 163 }; 164 165 int 166 compat_43_sys_getkerninfo(struct lwp *l, const struct compat_43_sys_getkerninfo_args *uap, register_t *retval) 167 { 168 /* { 169 syscallarg(int) op; 170 syscallarg(char *) where; 171 syscallarg(int *) size; 172 syscallarg(int) arg; 173 } */ 174 int error, name[6]; 175 int isize; 176 size_t size; 177 178 if (!SCARG(uap, size)) 179 return EINVAL; 180 181 if ((error = copyin(SCARG(uap, size), &isize, sizeof(isize))) != 0) 182 return error; 183 184 if (isize < 0 || isize > 4096) 185 return EINVAL; 186 187 size = isize; 188 189 switch (SCARG(uap, op) & 0xff00) { 190 191 case KINFO_RT: 192 name[0] = CTL_NET; 193 name[1] = PF_ROUTE; 194 name[2] = 0; 195 name[3] = (SCARG(uap, op) & 0xff0000) >> 16; 196 name[4] = SCARG(uap, op) & 0xff; 197 name[5] = SCARG(uap, arg); 198 error = old_sysctl(&name[0], 6, SCARG(uap, where), &size, 199 NULL, 0, l); 200 break; 201 202 case KINFO_VNODE: 203 name[0] = CTL_KERN; 204 name[1] = KERN_VNODE; 205 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size, 206 NULL, 0, l); 207 break; 208 209 case KINFO_PROC: 210 name[0] = CTL_KERN; 211 name[1] = KERN_PROC; 212 name[2] = SCARG(uap, op) & 0xff; 213 name[3] = SCARG(uap, arg); 214 error = old_sysctl(&name[0], 4, SCARG(uap, where), &size, 215 NULL, 0, l); 216 break; 217 218 case KINFO_FILE: 219 name[0] = CTL_KERN; 220 name[1] = KERN_FILE; 221 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size, 222 NULL, 0, l); 223 break; 224 225 case KINFO_METER: 226 name[0] = CTL_VM; 227 name[1] = VM_METER; 228 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size, 229 NULL, 0, l); 230 break; 231 232 case KINFO_LOADAVG: 233 name[0] = CTL_VM; 234 name[1] = VM_LOADAVG; 235 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size, 236 NULL, 0, l); 237 break; 238 239 case KINFO_CLOCKRATE: 240 name[0] = CTL_KERN; 241 name[1] = KERN_CLOCKRATE; 242 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size, 243 NULL, 0, l); 244 break; 245 246 247 case KINFO_BSDI_SYSINFO: 248 { 249 size_t len; 250 struct bsdi_si *usi = 251 (struct bsdi_si *) SCARG(uap, where); 252 struct bsdi_si ksi; 253 struct timeval tv; 254 const char *cpu_model = cpu_getmodel(); 255 char *us = (char *) &usi[1]; 256 257 if (usi == NULL) { 258 size = sizeof(ksi) + 259 strlen(ostype) + strlen(cpu_model) + 260 strlen(osrelease) + strlen(machine) + 261 strlen(version) + strlen(hostname) + 6; 262 error = 0; 263 break; 264 } 265 266 memset(&ksi, 0, sizeof(ksi)); 267 268 #define COPY(fld) \ 269 ksi.fld = us - (u_long) usi; \ 270 if ((error = copyoutstr(fld, us, 1024, &len)) != 0)\ 271 return error; \ 272 us += len 273 274 COPY(machine); 275 COPY(cpu_model); 276 ksi.ncpu = ncpu; /* XXX */ 277 ksi.cpuspeed = 40; /* XXX */ 278 ksi.hwflags = 0; /* XXX */ 279 ksi.physmem = ctob(physmem); 280 ksi.usermem = ctob(physmem); /* XXX */ 281 ksi.pagesize = PAGE_SIZE; 282 283 COPY(ostype); 284 COPY(osrelease); 285 ksi.os_revision = NetBSD; /* XXX */ 286 ksi.posix1_version = _POSIX_VERSION; 287 COPY(version); /* XXX */ 288 289 ksi.hz = hz; 290 ksi.profhz = profhz; 291 ksi.ngroups_max = NGROUPS_MAX; 292 ksi.arg_max = ARG_MAX; 293 ksi.open_max = OPEN_MAX; 294 ksi.child_max = CHILD_MAX; 295 296 getmicroboottime(&tv); 297 timeval_to_timeval50(&tv, &ksi.boottime); 298 COPY(hostname); 299 300 size = (us - (char *) &usi[1]) + sizeof(ksi); 301 302 if ((error = copyout(&ksi, usi, sizeof(ksi))) != 0) 303 return error; 304 } 305 break; 306 307 default: 308 return (EOPNOTSUPP); 309 } 310 if (error) 311 return (error); 312 *retval = size; 313 if (SCARG(uap, size)) 314 error = copyout((void *)&size, (void *)SCARG(uap, size), 315 sizeof(size)); 316 return (error); 317 } 318 319 320 /* ARGSUSED */ 321 int 322 compat_43_sys_sethostid(struct lwp *l, const struct compat_43_sys_sethostid_args *uap, register_t *retval) 323 { 324 long uhostid; 325 int name[2]; 326 327 uhostid = SCARG(uap, hostid); 328 name[0] = CTL_KERN; 329 name[1] = KERN_HOSTID; 330 331 return (old_sysctl(&name[0], 2, 0, 0, &uhostid, sizeof(long), l)); 332 } 333 334 335 /* ARGSUSED */ 336 int 337 compat_43_sys_sethostname(struct lwp *l, const struct compat_43_sys_sethostname_args *uap, register_t *retval) 338 { 339 int name[2]; 340 341 name[0] = CTL_KERN; 342 name[1] = KERN_HOSTNAME; 343 return (old_sysctl(&name[0], 2, 0, 0, SCARG(uap, hostname), 344 SCARG(uap, len), l)); 345 } 346 347 int 348 kern_info_43_init(void) 349 { 350 351 return syscall_establish(NULL, kern_info_43_syscalls); 352 } 353 354 int 355 kern_info_43_fini(void) 356 { 357 358 return syscall_disestablish(NULL, kern_info_43_syscalls); 359 } 360
Indexes created Sat Sep 20 22:09:52 GMT 2025