sys/compat/linux32/common/linux32_sysinfo.c

   1 /*      $NetBSD: linux32_sysinfo.c,v 1.6 2007/12/20 23:02:58 dsl Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed by Emmanuel Dreyfus
  17  * 4. The name of the author may not be used to endorse or promote
  18  *    products derived from this software without specific prior written
  19  *    permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS''
  22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  23  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  24  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
  25  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31  * POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <sys/cdefs.h>
  35
  36 __KERNEL_RCSID(0, "$NetBSD: linux32_sysinfo.c,v 1.6 2007/12/20 23:02:58 dsl Exp $");
  37
  38 #include <sys/types.h>
  39 #include <sys/param.h>
  40 #include <sys/kernel.h>
  41 #include <sys/dirent.h>
  42 #include <sys/proc.h>
  43
  44 #include <sys/syscallargs.h>
  45
  46 #include <uvm/uvm_extern.h>
  47
  48 #include <compat/netbsd32/netbsd32.h>
  49 #include <compat/netbsd32/netbsd32_conv.h>
  50 #include <compat/netbsd32/netbsd32_syscallargs.h>
  51
  52 #include <compat/linux/common/linux_types.h>
  53 #include <compat/linux/common/linux_signal.h>
  54 #include <compat/linux/common/linux_misc.h>
  55 #include <compat/linux/common/linux_ipc.h>
  56 #include <compat/linux/common/linux_sem.h>
  57 #include <compat/linux/linux_syscallargs.h>
  58
  59 #include <compat/linux32/common/linux32_types.h>
  60 #include <compat/linux32/common/linux32_signal.h>
  61 #include <compat/linux32/linux32_syscallargs.h>
  62
  63 /* ARGSUSED */
  64 int
  65 linux32_sys_sysinfo(struct lwp *l, const struct linux32_sys_sysinfo_args *uap, register_t *retval)
  66 {
  67         /* {
  68                 syscallarg(struct linux32_sysinfo *) arg;
  69         } */
  70         struct linux32_sysinfo si;
  71         struct loadavg *la;
  72
  73         si.uptime = time_uptime;
  74         la = &averunnable;
  75         si.loads[0] = la->ldavg[0] * LINUX_SYSINFO_LOADS_SCALE / la->fscale;
  76         si.loads[1] = la->ldavg[1] * LINUX_SYSINFO_LOADS_SCALE / la->fscale;
  77         si.loads[2] = la->ldavg[2] * LINUX_SYSINFO_LOADS_SCALE / la->fscale;
  78         si.totalram = ctob((u_long)physmem);
  79         si.freeram = (u_long)uvmexp.free * uvmexp.pagesize;
  80         si.sharedram = 0;       /* XXX */
  81         si.bufferram = (u_long)uvmexp.filepages * uvmexp.pagesize;
  82         si.totalswap = (u_long)uvmexp.swpages * uvmexp.pagesize;
  83         si.freeswap =
  84             (u_long)(uvmexp.swpages - uvmexp.swpginuse) * uvmexp.pagesize;
  85         si.procs = nprocs;
  86
  87         /* The following are only present in newer Linux kernels. */
  88         si.totalbig = 0;
  89         si.freebig = 0;
  90         si.mem_unit = 1;
  91
  92         return (copyout(&si, SCARG_P32(uap, arg), sizeof si));
  93 }
  94