145 lines
4.5 KiB
C
145 lines
4.5 KiB
C
/* $Id$ */
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/* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
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This file is part of the Gnome Top Library.
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Contributed by Joshua Sled <jsled@xcf.berkeley.edu>, July 1998.
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The Gnome Top Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The Gnome Top Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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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 <machine/pcb.h>
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#include <machine/tss.h>
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#include <unistd.h>
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#include <fcntl.h>
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static const unsigned long _glibtop_sysdeps_proc_kernel_pstats =
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(1 << GLIBTOP_PROC_KERNEL_MIN_FLT) +
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(1 << GLIBTOP_PROC_KERNEL_MAJ_FLT) +
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(1 << GLIBTOP_PROC_KERNEL_CMIN_FLT) +
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(1 << GLIBTOP_PROC_KERNEL_CMAJ_FLT);
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static const unsigned long _glibtop_sysdeps_proc_kernel_pcb =
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(1 << GLIBTOP_PROC_KERNEL_KSTK_EIP) +
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(1 << GLIBTOP_PROC_KERNEL_KSTK_ESP);
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static const unsigned long _glibtop_sysdeps_proc_kernel_wchan =
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(1 << GLIBTOP_PROC_KERNEL_NWCHAN) +
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(1 << GLIBTOP_PROC_KERNEL_WCHAN);
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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_pcb |
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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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struct user *u_addr = (struct user *)USRSTACK;
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struct pstats pstats;
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struct pcb pcb;
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int count;
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glibtop_init_p (server, (1 << GLIBTOP_SYSDEPS_PROC_KERNEL), 0);
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memset (buf, 0, sizeof (glibtop_proc_kernel));
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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_error_io_r (server, "kvm_getprocs (%d)", pid);
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/* Taken from `saveuser ()' in `/usr/src/bin/ps/ps.c'. */
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/* [FIXME]: /usr/include/sys/user.h tells me that the user area
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* may or may not be at the same kernel address in all
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* processes, but I don't see any way to get that address.
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* Since `ps' simply uses its own address, I think it's
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* safe to do this here, too. */
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/* NOTE: You need to mount the /proc filesystem to make
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* `kvm_uread' work. */
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if ((pinfo [0].kp_proc.p_flag & P_INMEM) &&
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kvm_uread (server->machine.kd, &(pinfo [0]).kp_proc,
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(unsigned long) &u_addr->u_stats,
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(char *) &pstats, sizeof (pstats)) == sizeof (pstats))
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{
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/*
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* The u-area might be swapped out, and we can't get
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* at it because we have a crashdump and no swap.
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* If it's here fill in these fields, otherwise, just
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* leave them 0.
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*/
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buf->min_flt = (u_int64_t) pstats.p_ru.ru_minflt;
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buf->maj_flt = (u_int64_t) pstats.p_ru.ru_majflt;
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buf->cmin_flt = (u_int64_t) pstats.p_cru.ru_minflt;
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buf->cmaj_flt = (u_int64_t) pstats.p_cru.ru_majflt;
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buf->flags |= _glibtop_sysdeps_proc_kernel_pstats;
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}
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if ((pinfo [0].kp_proc.p_flag & P_INMEM) &&
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kvm_uread (server->machine.kd, &(pinfo [0]).kp_proc,
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(unsigned long) &u_addr->u_pcb,
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(char *) &pcb, sizeof (pcb)) == sizeof (pcb))
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{
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/* Same like with pstats above. */
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buf->kstk_esp = (u_int64_t) pcb.pcb_ksp;
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buf->kstk_eip = (u_int64_t) pcb.pcb_pc;
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buf->flags |= _glibtop_sysdeps_proc_kernel_pcb;
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}
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/* Taken from `wchan ()' in `/usr/src/bin/ps/print.c'. */
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glibtop_suid_leave (server);
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buf->nwchan = (unsigned long) pinfo [0].kp_proc.p_wchan &~ KERNBASE;
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if (pinfo [0].kp_proc.p_wchan && pinfo [0].kp_proc.p_wmesg) {
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strncpy (buf->wchan, pinfo [0].kp_eproc.e_wmesg,
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sizeof (buf->wchan) - 1);
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buf->wchan [sizeof (buf->wchan) - 1] = 0;
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} else {
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buf->wchan [0] = 0;
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}
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buf->flags |= _glibtop_sysdeps_proc_kernel_wchan;
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}
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