18af9297ea
1999-12-11 Martin Baulig <martin@home-of-linux.org> This is a larger source-incompatible commit, but it'll make it easier to write automatically generated code (for instance for scripting languages). Renamed all constants for the flags field to match the field names from the features.def and structures.def where this was not already the case. * include/glibtop/cpu.h: s/GLIBTOP_XCPU_/GLIBTOP_CPU_XCPU_/g. * include/glibtop/shm_limits.h: s/GLIBTOP_IPC_/GLIBTOP_SHM_LIMITS_/g. * include/glibtop/sem_limits.h: s/GLIBTOP_IPC_/GLIBTOP_SEM_LIMITS_/g. * include/glibtop/msg_limits.h: s/GLIBTOP_IPC_/GLIBTOP_MSG_LIMITS_/g.
125 lines
3.1 KiB
C
125 lines
3.1 KiB
C
/* $Id$ */
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/* Copyright (C) 1998-99 Martin Baulig
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This file is part of LibGTop 1.0.
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Contributed by Martin Baulig <martin@home-of-linux.org>, August 1998.
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LibGTop is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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LibGTop is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with LibGTop; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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*/
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#include <glibtop.h>
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#include <glibtop/error.h>
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#include <glibtop/shm_limits.h>
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#include <glibtop_suid.h>
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#if defined(__bsdi__) && (_BSDI_VERSION < 199700)
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/* Older versions of BSDI don't seem to have this. */
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int
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glibtop_init_shm_limits_p (glibtop *server)
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{
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return 0;
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}
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int
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glibtop_get_shm_limits_p (glibtop *server, glibtop_shm_limits *buf)
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{
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glibtop_init_p (server, (1L << GLIBTOP_SYSDEPS_SHM_LIMITS), 0);
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memset (buf, 0, sizeof (glibtop_shm_limits));
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return 0;
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}
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#else
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/* #define KERNEL to get declaration of `struct shminfo'. */
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#if defined(__FreeBSD__) || defined(__bsdi__)
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#define KERNEL 1
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#else
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#define _KERNEL 1
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#endif
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#include <sys/ipc.h>
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#include <sys/shm.h>
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static unsigned long _glibtop_sysdeps_shm_limits =
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(1L << GLIBTOP_SHM_LIMITS_SHMMAX) + (1L << GLIBTOP_SHM_LIMITS_SHMMIN) +
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(1L << GLIBTOP_SHM_LIMITS_SHMMNI) + (1L << GLIBTOP_SHM_LIMITS_SHMSEG) +
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(1L << GLIBTOP_SHM_LIMITS_SHMALL);
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/* The values in this structure never change at runtime, so we only
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* read it once during initialization. We have to use the name `_shminfo'
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* since `shminfo' is already declared external in <sys/shm.h>. */
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static struct shminfo _shminfo;
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/* nlist structure for kernel access */
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static struct nlist nlst [] = {
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{ "_shminfo" },
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{ 0 }
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};
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/* Init function. */
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int
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glibtop_init_shm_limits_p (glibtop *server)
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{
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if (kvm_nlist (server->machine.kd, nlst) != 0) {
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glibtop_warn_io_r (server, "kvm_nlist (shm_limits)");
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return -1;
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}
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if (kvm_read (server->machine.kd, nlst [0].n_value,
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&_shminfo, sizeof (_shminfo)) != sizeof (_shminfo)) {
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glibtop_warn_io_r (server, "kvm_read (shminfo)");
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return -1;
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}
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server->sysdeps.shm_limits = _glibtop_sysdeps_shm_limits;
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return 0;
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}
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/* Provides information about sysv ipc limits. */
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int
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glibtop_get_shm_limits_p (glibtop *server, glibtop_shm_limits *buf)
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{
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glibtop_init_p (server, (1L << GLIBTOP_SYSDEPS_SHM_LIMITS), 0);
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memset (buf, 0, sizeof (glibtop_shm_limits));
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if (server->sysdeps.shm_limits == 0)
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return -1;
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buf->shmmax = _shminfo.shmmax;
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buf->shmmin = _shminfo.shmmin;
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buf->shmmni = _shminfo.shmmni;
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buf->shmseg = _shminfo.shmseg;
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buf->shmall = _shminfo.shmall;
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buf->flags = _glibtop_sysdeps_shm_limits;
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return 0;
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}
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#endif /* either a newer BSDI or no BSDI at all. */
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