Blame sysdeps/freebsd/prockernel.c

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/* Copyright (C) 1998 Joshua Sled
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   This file is part of LibGTop 1.0.
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   Contributed by Joshua Sled <jsled@xcf.berkeley.edu>, July 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., 51 Franklin Street, Fifth Floor,
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   Boston, MA 02110-1301, USA.
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*/
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#include <config.h>
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#include <glibtop.h>
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#include <glibtop/error.h>
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#include <glibtop/prockernel.h>
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#include <glibtop_suid.h>
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#include <kvm.h>
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#include <sys/param.h>
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#include <sys/sysctl.h>
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#include <sys/proc.h>
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#include <sys/user.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <osreldate.h>
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static const unsigned long _glibtop_sysdeps_proc_kernel_pstats =
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(1L << GLIBTOP_PROC_KERNEL_K_FLAGS) +
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(1L << GLIBTOP_PROC_KERNEL_MIN_FLT) +
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(1L << GLIBTOP_PROC_KERNEL_MAJ_FLT) +
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#if (__FreeBSD_version >= 600006) || defined(__FreeBSD_kernel__)
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(1L << GLIBTOP_PROC_KERNEL_CMIN_FLT) +
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(1L << GLIBTOP_PROC_KERNEL_CMAJ_FLT);
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#else
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0;
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#endif
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static const unsigned long _glibtop_sysdeps_proc_kernel_wchan =
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(1L << GLIBTOP_PROC_KERNEL_WCHAN) +
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(1L << GLIBTOP_PROC_KERNEL_NWCHAN);
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/* Init function. */
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void
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_glibtop_init_proc_kernel_p (glibtop *server)
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{
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	server->sysdeps.proc_kernel = _glibtop_sysdeps_proc_kernel_pstats |
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		_glibtop_sysdeps_proc_kernel_wchan;
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}
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void
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glibtop_get_proc_kernel_p (glibtop *server,
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			   glibtop_proc_kernel *buf,
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			   pid_t pid)
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{
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	struct kinfo_proc *pinfo;
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	int count;
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	memset (buf, 0, sizeof (glibtop_proc_kernel));
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	if (server->sysdeps.proc_time == 0)
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		return;
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	/* It does not work for the swapper task. */
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	if (pid == 0) return;
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	glibtop_suid_enter (server);
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	/* Get the process information */
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	pinfo = kvm_getprocs (server->machine->kd, KERN_PROC_PID, pid, &count);
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	if ((pinfo == NULL) || (count != 1)) {
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		glibtop_warn_io_r (server, "kvm_getprocs (%d)", pid);
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		glibtop_suid_leave (server);
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		return;
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	}
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	glibtop_suid_leave (server);
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#define	PROC_WCHAN	ki_wchan
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#define	PROC_WMESG	ki_wmesg
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#define	PROC_WMESG	ki_wmesg
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	buf->nwchan = (unsigned long) pinfo [0].PROC_WCHAN;
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	buf->flags |= (1L << GLIBTOP_PROC_KERNEL_NWCHAN);
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	if (pinfo [0].PROC_WCHAN && pinfo [0].PROC_WMESG[0] != 0) {
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		g_strlcpy (buf->wchan, pinfo [0].PROC_WMESG,
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			 sizeof buf->wchan);
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		buf->flags |= (1L << GLIBTOP_PROC_KERNEL_WCHAN);
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	} else {
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		buf->wchan [0] = 0;
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	}
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	buf->k_flags = (unsigned long) pinfo [0].ki_flag;
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	buf->min_flt = (unsigned long) pinfo [0].ki_rusage.ru_minflt;
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	buf->maj_flt = (unsigned long) pinfo [0].ki_rusage.ru_majflt;
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#if (__FreeBSD_version >= 600006) || defined(__FreeBSD_kernel__)
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	buf->cmin_flt = (unsigned long) buf->min_flt + pinfo [0].ki_rusage_ch.ru_minflt;
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	buf->cmaj_flt = (unsigned long) buf->maj_flt + pinfo [0].ki_rusage_ch.ru_majflt;
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#endif
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	buf->flags |= _glibtop_sysdeps_proc_kernel_pstats;
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	return;
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}