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213 lines
5.5 KiB
C
213 lines
5.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-4-Clause
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*
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* Copyright (c) 2009 Stanislav Sedov <stas@FreeBSD.org>
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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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* 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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#include <sys/param.h>
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#include <sys/user.h>
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#include <sys/stat.h>
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#include <sys/vnode.h>
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#include <sys/conf.h>
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#include <sys/pipe.h>
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#define _WANT_MOUNT
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#include <sys/mount.h>
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#include <ufs/ufs/quota.h>
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#include <ufs/ufs/inode.h>
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#include <ufs/ufs/extattr.h>
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#include <ufs/ufs/ufsmount.h>
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#include <fs/devfs/devfs.h>
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#include <fs/devfs/devfs_int.h>
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#include <nfs/nfsproto.h>
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#include <nfsclient/nfs.h>
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#include <nfsclient/nfsnode.h>
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#include <assert.h>
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#include <err.h>
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#include <kvm.h>
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#include <stddef.h>
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#include <string.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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kvm_read_all(kvm_t *kd, unsigned long addr, void *buf, size_t nbytes)
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{
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ssize_t error;
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if (nbytes >= SSIZE_MAX)
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return (0);
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error = kvm_read(kd, addr, buf, nbytes);
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return (error == (ssize_t)(nbytes));
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}
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int
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kdevtoname(kvm_t *kd, struct cdev *dev, char *buf)
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{
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struct cdev si;
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assert(buf);
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if (!kvm_read_all(kd, (unsigned long)dev, &si, sizeof(si)))
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return (1);
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strlcpy(buf, si.si_name, SPECNAMELEN + 1);
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return (0);
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}
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int
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ufs_filestat(kvm_t *kd, struct vnode *vp, struct vnstat *vn)
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{
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struct inode inode;
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struct ufsmount um;
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if (!kvm_read_all(kd, (unsigned long)VTOI(vp), &inode, sizeof(inode))) {
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warnx("can't read inode at %p", (void *)VTOI(vp));
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return (1);
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}
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if (!kvm_read_all(kd, (unsigned long)inode.i_ump, &um, sizeof(um))) {
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warnx("can't read ufsmount at %p", (void *)inode.i_ump);
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return (1);
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}
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/*
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* The st_dev from stat(2) is a dev_t. These kernel structures
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* contain cdev pointers. We need to convert to dev_t to make
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* comparisons
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*/
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vn->vn_fsid = dev2udev(kd, um.um_dev);
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vn->vn_fileid = inode.i_number;
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vn->vn_mode = (mode_t)inode.i_mode;
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vn->vn_size = inode.i_size;
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return (0);
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}
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int
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devfs_filestat(kvm_t *kd, struct vnode *vp, struct vnstat *vn)
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{
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struct devfs_dirent devfs_dirent;
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struct mount mount;
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if (!kvm_read_all(kd, (unsigned long)getvnodedata(vp), &devfs_dirent,
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sizeof(devfs_dirent))) {
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warnx("can't read devfs_dirent at %p",
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(void *)vp->v_data);
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return (1);
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}
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if (!kvm_read_all(kd, (unsigned long)getvnodemount(vp), &mount,
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sizeof(mount))) {
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warnx("can't read mount at %p",
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(void *)getvnodemount(vp));
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return (1);
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}
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vn->vn_fsid = mount.mnt_stat.f_fsid.val[0];
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vn->vn_fileid = devfs_dirent.de_inode;
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vn->vn_mode = (devfs_dirent.de_mode & ~S_IFMT) | S_IFCHR;
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vn->vn_size = 0;
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return (0);
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}
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int
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nfs_filestat(kvm_t *kd, struct vnode *vp, struct vnstat *vn)
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{
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struct nfsnode nfsnode;
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mode_t mode;
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if (!kvm_read_all(kd, (unsigned long)VTONFS(vp), &nfsnode,
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sizeof(nfsnode))) {
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warnx("can't read nfsnode at %p",
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(void *)VTONFS(vp));
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return (1);
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}
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vn->vn_fsid = nfsnode.n_vattr.va_fsid;
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vn->vn_fileid = nfsnode.n_vattr.va_fileid;
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vn->vn_size = nfsnode.n_size;
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mode = (mode_t)nfsnode.n_vattr.va_mode;
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switch (vp->v_type) {
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case VREG:
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mode |= S_IFREG;
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break;
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case VDIR:
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mode |= S_IFDIR;
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break;
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case VBLK:
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mode |= S_IFBLK;
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break;
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case VCHR:
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mode |= S_IFCHR;
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break;
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case VLNK:
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mode |= S_IFLNK;
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break;
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case VSOCK:
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mode |= S_IFSOCK;
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break;
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case VFIFO:
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mode |= S_IFIFO;
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break;
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default:
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break;
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};
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vn->vn_mode = mode;
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return (0);
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}
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/*
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* Read the cdev structure in the kernel in order to work out the
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* associated dev_t
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*/
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dev_t
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dev2udev(kvm_t *kd, struct cdev *dev)
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{
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struct cdev_priv priv;
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assert(kd);
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if (kvm_read_all(kd, (unsigned long)cdev2priv(dev), &priv,
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sizeof(priv))) {
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return ((dev_t)priv.cdp_inode);
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} else {
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warnx("can't convert cdev *%p to a dev_t\n", dev);
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return (-1);
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}
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}
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void *
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getvnodedata(struct vnode *vp)
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{
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return (vp->v_data);
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}
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struct mount *
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getvnodemount(struct vnode *vp)
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{
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return (vp->v_mount);
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}
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