FreeBSD/Linux Kernel Cross Reference
sys/compat/linux32/common/linux32_sysinfo.c

     /*      $NetBSD: linux32_sysinfo.c,v 1.6 2007/12/20 23:02:58 dsl Exp $ */
     
     /*-
      * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Emmanuel Dreyfus
     * 4. The name of the author may not be used to endorse or promote 
     *    products derived from this software without specific prior written 
     *    permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS'' 
     * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
     * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS 
     * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     * POSSIBILITY OF SUCH DAMAGE.
     */
    
    #include <sys/cdefs.h>
    
    __KERNEL_RCSID(0, "$NetBSD: linux32_sysinfo.c,v 1.6 2007/12/20 23:02:58 dsl Exp $");
    
    #include <sys/types.h>
    #include <sys/param.h>
    #include <sys/kernel.h>
    #include <sys/dirent.h>
    #include <sys/proc.h>
    
    #include <sys/syscallargs.h>
    
    #include <uvm/uvm_extern.h>
    
    #include <compat/netbsd32/netbsd32.h>
    #include <compat/netbsd32/netbsd32_conv.h>
    #include <compat/netbsd32/netbsd32_syscallargs.h>
    
    #include <compat/linux/common/linux_types.h>
    #include <compat/linux/common/linux_signal.h>
    #include <compat/linux/common/linux_misc.h>
    #include <compat/linux/linux_syscallargs.h>
    
    #include <compat/linux32/common/linux32_types.h>
    #include <compat/linux32/common/linux32_signal.h>
    #include <compat/linux32/linux32_syscallargs.h>
    
    /* ARGSUSED */
    int
    linux32_sys_sysinfo(struct lwp *l, const struct linux32_sys_sysinfo_args *uap, register_t *retval)
    {
            /* {
                    syscallarg(struct linux32_sysinfo *) arg;
            } */
            struct linux32_sysinfo si;
            struct loadavg *la;
    
            si.uptime = time_uptime;
            la = &averunnable;
            si.loads[0] = la->ldavg[0] * LINUX_SYSINFO_LOADS_SCALE / la->fscale;
            si.loads[1] = la->ldavg[1] * LINUX_SYSINFO_LOADS_SCALE / la->fscale;
            si.loads[2] = la->ldavg[2] * LINUX_SYSINFO_LOADS_SCALE / la->fscale;
            si.totalram = ctob((u_long)physmem);
            si.freeram = (u_long)uvmexp.free * uvmexp.pagesize;
            si.sharedram = 0;       /* XXX */
            si.bufferram = (u_long)uvmexp.filepages * uvmexp.pagesize;
            si.totalswap = (u_long)uvmexp.swpages * uvmexp.pagesize;
            si.freeswap = 
                (u_long)(uvmexp.swpages - uvmexp.swpginuse) * uvmexp.pagesize;
            si.procs = nprocs;
    
            /* The following are only present in newer Linux kernels. */
            si.totalbig = 0;
            si.freebig = 0;
            si.mem_unit = 1;
    
            return (copyout(&si, SCARG_P32(uap, arg), sizeof si));
    }
    

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