0daf62d9f5
file and processes information retrieval from the running kernel via sysctl in the form of new library, libprocstat. The library also supports KVM backend for analyzing memory crash dumps. Both procstat(1) and fstat(1) utilities have been modified to take advantage of the library (as the bonus point the fstat(1) utility no longer need superuser privileges to operate), and the procstat(1) utility is now able to display information from memory dumps as well. The newly introduced fuser(1) utility also uses this library and able to operate via sysctl and kvm backends. The library is by no means complete (e.g. KVM backend is missing vnode name resolution routines, and there're no manpages for the library itself) so I plan to improve it further. I'm commiting it so it will get wider exposure and review. We won't be able to MFC this work as it relies on changes in HEAD, which was introduced some time ago, that break kernel ABI. OTOH we may be able to merge the library with KVM backend if we really need it there. Discussed with: rwatson
91 lines
3.0 KiB
C
91 lines
3.0 KiB
C
/*
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* Copyright (c) 2000 Peter Edwards
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by Peter Edwards
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* XXX -
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* This had to be separated from fstat.c because cd9660s has namespace
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* conflicts with UFS.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/vnode.h>
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#include <sys/mount.h>
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#include <netinet/in.h>
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#include <err.h>
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#include <isofs/cd9660/cd9660_node.h>
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#define _KERNEL
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#include <isofs/cd9660/iso.h>
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#undef _KERNEL
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#include <kvm.h>
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#include <stdio.h>
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#include "libprocstat.h"
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#include "common_kvm.h"
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int
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isofs_filestat(kvm_t *kd, struct vnode *vp, struct vnstat *vn)
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{
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struct iso_node isonode;
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struct iso_mnt mnt;
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if (!kvm_read_all(kd, (unsigned long)VTOI(vp), &isonode,
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sizeof(isonode))) {
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warnx("can't read iso_node at %p",
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(void *)VTOI(vp));
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return (1);
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}
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if (!kvm_read_all(kd, (unsigned long)isonode.i_mnt, &mnt,
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sizeof(mnt))) {
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warnx("can't read iso_mnt at %p",
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(void *)VTOI(vp));
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return (1);
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}
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vn->vn_fsid = dev2udev(kd, mnt.im_dev);
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vn->vn_mode = (mode_t)isonode.inode.iso_mode;
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vn->vn_fileid = (long)isonode.i_number;
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vn->vn_size = (u_long)isonode.i_size;
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return (0);
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}
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