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/* $Id$ */
/* Copyright (C) 1998-99 Martin Baulig
This file is part of LibGTop 1.0.
Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
LibGTop is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
LibGTop is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with LibGTop; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include <glibtop.h>
#include <glibtop/msg_limits.h>
#include <kvm.h>
#include <sys/msg.h>
static struct nlist nlst[] = { {"msginfo"}, {NULL} };
static const unsigned long _glibtop_sysdeps_msg_limits =
(1L << GLIBTOP_IPC_MSGPOOL) + (1L << GLIBTOP_IPC_MSGMAP) +
(1L << GLIBTOP_IPC_MSGMAX) + (1L << GLIBTOP_IPC_MSGMNB) +
(1L << GLIBTOP_IPC_MSGMNI) + (1L << GLIBTOP_IPC_MSGSSZ) +
(1L << GLIBTOP_IPC_MSGTQL);
/* Init function. */
int
glibtop_init_msg_limits_p (glibtop *server)
{
kvm_t *kd = server->machine.kd;
if(kd && !kvm_nlist(kd, nlst))
server->sysdeps.msg_limits = _glibtop_sysdeps_msg_limits;
else
server->sysdeps.msg_limits = 0;
}
/* Provides information about sysv ipc limits. */
int
glibtop_get_msg_limits_p (glibtop *server, glibtop_msg_limits *buf)
{
kvm_t *kd = server->machine.kd;
struct msginfo minfo;
memset (buf, 0, sizeof (glibtop_msg_limits));
if(!(server->sysdeps.msg_limits))
return;
if(kvm_read(kd, nlst[0].n_value, (void *)&minfo,
sizeof(struct msginfo)) != sizeof(struct msginfo))
return;
buf->msgmap = minfo.msgmap;
buf->msgmax = minfo.msgmax;
buf->msgmnb = minfo.msgmnb;
buf->msgmni = minfo.msgmni;
buf->msgssz = minfo.msgssz;
buf->msgtql = minfo.msgtql;
buf->msgpool = minfo.msgmni * minfo.msgmnb >> 10;
buf->flags = _glibtop_sysdeps_msg_limits;
}
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