1 /* $NetBSD: linux32_sysinfo.c,v 1.14 2021/11/25 03:08:04 ryo 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 1.14 2021/11/25 03:08:04 ryo Exp $");
37
38 #include <sys/types.h>
39 #include <sys/param.h>
40 #include <sys/atomic.h>
41 #include <sys/kernel.h>
42 #include <sys/dirent.h>
43 #include <sys/proc.h>
44
45 #include <sys/syscallargs.h>
46
47 #include <uvm/uvm_extern.h>
48
49 #include <compat/netbsd32/netbsd32.h>
50 #include <compat/netbsd32/netbsd32_conv.h>
51 #include <compat/netbsd32/netbsd32_syscallargs.h>
52
53 #include <compat/linux/common/linux_types.h>
54 #include <compat/linux/common/linux_signal.h>
55 #include <compat/linux/common/linux_misc.h>
56 #include <compat/linux/common/linux_ipc.h>
57 #include <compat/linux/common/linux_sem.h>
58 #include <compat/linux/linux_syscallargs.h>
59
60 #include <compat/linux32/common/linux32_types.h>
61 #include <compat/linux32/common/linux32_signal.h>
62 #include <compat/linux32/linux32_syscallargs.h>
63
64 /* ARGSUSED */
65 int
linux32_sys_sysinfo(struct lwp * l,const struct linux32_sys_sysinfo_args * uap,register_t * retval)66 linux32_sys_sysinfo(struct lwp *l, const struct linux32_sys_sysinfo_args *uap, register_t *retval)
67 {
68 /* {
69 syscallarg(struct linux32_sysinfo *) arg;
70 } */
71 struct linux32_sysinfo si;
72 struct loadavg *la;
73 int64_t filepg;
74
75 memset(&si, 0, sizeof(si));
76 si.uptime = time_uptime;
77 la = &averunnable;
78 si.loads[0] = la->ldavg[0] * LINUX_SYSINFO_LOADS_SCALE / la->fscale;
79 si.loads[1] = la->ldavg[1] * LINUX_SYSINFO_LOADS_SCALE / la->fscale;
80 si.loads[2] = la->ldavg[2] * LINUX_SYSINFO_LOADS_SCALE / la->fscale;
81 si.totalram = ctob((u_long)physmem);
82 /* uvm_availmem() may sync the counters. */
83 si.freeram = (u_long)uvm_availmem(true) * uvmexp.pagesize;
84 filepg = cpu_count_get(CPU_COUNT_FILECLEAN) +
85 cpu_count_get(CPU_COUNT_FILEDIRTY) +
86 cpu_count_get(CPU_COUNT_FILEUNKNOWN) -
87 cpu_count_get(CPU_COUNT_EXECPAGES);
88 si.sharedram = 0; /* XXX */
89 si.bufferram = (u_long)(filepg * uvmexp.pagesize);
90 si.totalswap = (u_long)uvmexp.swpages * uvmexp.pagesize;
91 si.freeswap =
92 (u_long)(uvmexp.swpages - uvmexp.swpginuse) * uvmexp.pagesize;
93 si.procs = atomic_load_relaxed(&nprocs);
94
95 /* The following are only present in newer Linux kernels. */
96 si.totalbig = 0;
97 si.freebig = 0;
98 si.mem_unit = 1;
99
100 return (copyout(&si, SCARG_P32(uap, arg), sizeof si));
101 }
102
103