sys/compat/common/kern_info_43.c

   1 /*      $NetBSD: kern_info_43.c,v 1.32.8.2 2008/11/01 21:22:25 christos 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 1.32.8.2 2008/11/01 21:22:25 christos 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 #include <compat/sys/time.h>
  60
  61 int
  62 compat_43_sys_getdtablesize(struct lwp *l, const void *v, register_t *retval)
  63 {
  64         struct proc *p = l->l_proc;
  65
  66         mutex_enter(p->p_lock);
  67         *retval = min((int)p->p_rlimit[RLIMIT_NOFILE].rlim_cur, maxfiles);
  68         mutex_exit(p->p_lock);
  69         return (0);
  70 }
  71
  72
  73 /* ARGSUSED */
  74 int
  75 compat_43_sys_gethostid(struct lwp *l, const void *v, register_t *retval)
  76 {
  77
  78         *(int32_t *)retval = hostid;
  79         return (0);
  80 }
  81
  82
  83 /*ARGSUSED*/
  84 int
  85 compat_43_sys_gethostname(struct lwp *l, const struct compat_43_sys_gethostname_args *uap, register_t *retval)
  86 {
  87         /* {
  88                 syscallarg(char *) hostname;
  89                 syscallarg(u_int) len;
  90         } */
  91         int name[2];
  92         size_t sz;
  93
  94         name[0] = CTL_KERN;
  95         name[1] = KERN_HOSTNAME;
  96         sz = SCARG(uap, len);
  97         return (old_sysctl(&name[0], 2, SCARG(uap, hostname), &sz, 0, 0, l));
  98 }
  99
 100 #define KINFO_PROC              (0<<8)
 101 #define KINFO_RT                (1<<8)
 102 #define KINFO_VNODE             (2<<8)
 103 #define KINFO_FILE              (3<<8)
 104 #define KINFO_METER             (4<<8)
 105 #define KINFO_LOADAVG           (5<<8)
 106 #define KINFO_CLOCKRATE         (6<<8)
 107 #define KINFO_BSDI_SYSINFO      (101<<8)
 108
 109
 110 /*
 111  * The string data is appended to the end of the bsdi_si structure during
 112  * copyout. The "char *" offsets in the bsdi_si struct are relative to the
 113  * base of the bsdi_si struct.
 114  */
 115 struct bsdi_si {
 116         char    *machine;
 117         char    *cpu_model;
 118         long    ncpu;
 119         long    cpuspeed;
 120         long    hwflags;
 121         u_long  physmem;
 122         u_long  usermem;
 123         u_long  pagesize;
 124
 125         char    *ostype;
 126         char    *osrelease;
 127         long    os_revision;
 128         long    posix1_version;
 129         char    *version;
 130
 131         long    hz;
 132         long    profhz;
 133         int     ngroups_max;
 134         long    arg_max;
 135         long    open_max;
 136         long    child_max;
 137
 138         struct  timeval50 boottime;
 139         char    *hostname;
 140 };
 141
 142 int
 143 compat_43_sys_getkerninfo(struct lwp *l, const struct compat_43_sys_getkerninfo_args *uap, register_t *retval)
 144 {
 145         /* {
 146                 syscallarg(int) op;
 147                 syscallarg(char *) where;
 148                 syscallarg(int *) size;
 149                 syscallarg(int) arg;
 150         } */
 151         int error, name[6];
 152         size_t size;
 153
 154         if (SCARG(uap, size) && (error = copyin((void *)SCARG(uap, size),
 155             (void *)&size, sizeof(size))))
 156                 return (error);
 157
 158         switch (SCARG(uap, op) & 0xff00) {
 159
 160         case KINFO_RT:
 161                 name[0] = CTL_NET;
 162                 name[1] = PF_ROUTE;
 163                 name[2] = 0;
 164                 name[3] = (SCARG(uap, op) & 0xff0000) >> 16;
 165                 name[4] = SCARG(uap, op) & 0xff;
 166                 name[5] = SCARG(uap, arg);
 167                 error = old_sysctl(&name[0], 6, SCARG(uap, where), &size,
 168                                    NULL, 0, l);
 169                 break;
 170
 171         case KINFO_VNODE:
 172                 name[0] = CTL_KERN;
 173                 name[1] = KERN_VNODE;
 174                 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size,
 175                                    NULL, 0, l);
 176                 break;
 177
 178         case KINFO_PROC:
 179                 name[0] = CTL_KERN;
 180                 name[1] = KERN_PROC;
 181                 name[2] = SCARG(uap, op) & 0xff;
 182                 name[3] = SCARG(uap, arg);
 183                 error = old_sysctl(&name[0], 4, SCARG(uap, where), &size,
 184                                    NULL, 0, l);
 185                 break;
 186
 187         case KINFO_FILE:
 188                 name[0] = CTL_KERN;
 189                 name[1] = KERN_FILE;
 190                 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size,
 191                                    NULL, 0, l);
 192                 break;
 193
 194         case KINFO_METER:
 195                 name[0] = CTL_VM;
 196                 name[1] = VM_METER;
 197                 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size,
 198                                    NULL, 0, l);
 199                 break;
 200
 201         case KINFO_LOADAVG:
 202                 name[0] = CTL_VM;
 203                 name[1] = VM_LOADAVG;
 204                 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size,
 205                                    NULL, 0, l);
 206                 break;
 207
 208         case KINFO_CLOCKRATE:
 209                 name[0] = CTL_KERN;
 210                 name[1] = KERN_CLOCKRATE;
 211                 error = old_sysctl(&name[0], 2, SCARG(uap, where), &size,
 212                                    NULL, 0, l);
 213                 break;
 214
 215
 216         case KINFO_BSDI_SYSINFO:
 217                 {
 218                         size_t len;
 219                         struct bsdi_si *usi =
 220                             (struct bsdi_si *) SCARG(uap, where);
 221                         struct bsdi_si ksi;
 222                         struct timeval tv;
 223                         char *us = (char *) &usi[1];
 224
 225                         if (usi == NULL) {
 226                                 size = sizeof(ksi) +
 227                                     strlen(ostype) + strlen(cpu_model) +
 228                                     strlen(osrelease) + strlen(machine) +
 229                                     strlen(version) + strlen(hostname) + 6;
 230                                 error = 0;
 231                                 break;
 232                         }
 233
 234 #define COPY(fld)                                                       \
 235                         ksi.fld = us - (u_long) usi;                    \
 236                         if ((error = copyoutstr(fld, us, 1024, &len)) != 0)\
 237                                 return error;                           \
 238                         us += len
 239
 240                         COPY(machine);
 241                         COPY(cpu_model);
 242                         ksi.ncpu = ncpu;                /* XXX */
 243                         ksi.cpuspeed = 40;              /* XXX */
 244                         ksi.hwflags = 0;                /* XXX */
 245                         ksi.physmem = ctob(physmem);
 246                         ksi.usermem = ctob(physmem);    /* XXX */
 247                         ksi.pagesize = PAGE_SIZE;
 248
 249                         COPY(ostype);
 250                         COPY(osrelease);
 251                         ksi.os_revision = NetBSD;       /* XXX */
 252                         ksi.posix1_version = _POSIX_VERSION;
 253                         COPY(version);                  /* XXX */
 254
 255                         ksi.hz = hz;
 256                         ksi.profhz = profhz;
 257                         ksi.ngroups_max = NGROUPS_MAX;
 258                         ksi.arg_max = ARG_MAX;
 259                         ksi.open_max = OPEN_MAX;
 260                         ksi.child_max = CHILD_MAX;
 261
 262                         TIMESPEC_TO_TIMEVAL(&tv, &boottime);
 263                         timeval_to_timeval50(&tv, &ksi.boottime);
 264                         COPY(hostname);
 265
 266                         size = (us - (char *) &usi[1]) + sizeof(ksi);
 267
 268                         if ((error = copyout(&ksi, usi, sizeof(ksi))) != 0)
 269                                 return error;
 270                 }
 271                 break;
 272
 273         default:
 274                 return (EOPNOTSUPP);
 275         }
 276         if (error)
 277                 return (error);
 278         *retval = size;
 279         if (SCARG(uap, size))
 280                 error = copyout((void *)&size, (void *)SCARG(uap, size),
 281                     sizeof(size));
 282         return (error);
 283 }
 284
 285
 286 /* ARGSUSED */
 287 int
 288 compat_43_sys_sethostid(struct lwp *l, const struct compat_43_sys_sethostid_args *uap, register_t *retval)
 289 {
 290         long uhostid;
 291         int name[2];
 292
 293         uhostid = SCARG(uap, hostid);
 294         name[0] = CTL_KERN;
 295         name[1] = KERN_HOSTID;
 296
 297         return (old_sysctl(&name[0], 2, 0, 0, &uhostid, sizeof(long), l));
 298 }
 299
 300
 301 /* ARGSUSED */
 302 int
 303 compat_43_sys_sethostname(struct lwp *l, const struct compat_43_sys_sethostname_args *uap, register_t *retval)
 304 {
 305         int name[2];
 306
 307         name[0] = CTL_KERN;
 308         name[1] = KERN_HOSTNAME;
 309         return (old_sysctl(&name[0], 2, 0, 0, SCARG(uap, hostname),
 310                            SCARG(uap, len), l));
 311 }