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/* $OpenBSD: kvm_udf.c,v 1.10 2016/10/02 23:11:55 guenther Exp $ */ |
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/* |
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* Copyright (c) 2001, 2002 Scott Long <scottl@freebsd.org> |
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* 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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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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/ucred.h> |
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#define _KERNEL |
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#include <sys/mount.h> |
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#undef _KERNEL |
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#include <sys/lock.h> |
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#include <sys/vnode.h> |
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#include <sys/sysctl.h> |
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#include <sys/specdev.h> |
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#include <crypto/siphash.h> |
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#include <isofs/udf/ecma167-udf.h> |
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#include <isofs/udf/udf.h> |
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#include <stdint.h> |
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#include <limits.h> |
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#include <kvm.h> |
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#include <db.h> |
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#include "kvm_private.h" |
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#include "kvm_file.h" |
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/* Convert file entry permission (5 bits per owner/group/user) to a mode_t */ |
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static mode_t |
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udf_permtomode(struct unode *up) |
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{ |
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uint32_t perm; |
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uint16_t flags; |
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mode_t mode; |
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perm = letoh32(up->u_fentry->perm); |
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flags = letoh16(up->u_fentry->icbtag.flags); |
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mode = perm & UDF_FENTRY_PERM_USER_MASK; |
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mode |= ((perm & UDF_FENTRY_PERM_GRP_MASK) >> 2); |
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mode |= ((perm & UDF_FENTRY_PERM_OWNER_MASK) >> 4); |
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mode |= ((flags & UDF_ICB_TAG_FLAGS_STICKY) << 4); |
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mode |= ((flags & UDF_ICB_TAG_FLAGS_SETGID) << 6); |
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mode |= ((flags & UDF_ICB_TAG_FLAGS_SETUID) << 8); |
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return (mode); |
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} |
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int |
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_kvm_stat_udf(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp) |
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{ |
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struct unode up; |
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struct file_entry fentry; |
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struct umount um; |
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if (KREAD(kd, (u_long)VTOU(vp), &up)) { |
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_kvm_err(kd, kd->program, "can't read unode at %p", VTOU(vp)); |
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return (-1); |
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} |
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if (KREAD(kd, (u_long)up.u_fentry, &fentry)) { |
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_kvm_err(kd, kd->program, "can't read file_entry at %p", |
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up.u_fentry); |
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return (-1); |
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} |
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if (KREAD(kd, (u_long)up.u_ump, &um)) { |
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_kvm_err(kd, kd->program, "can't read umount at %p", |
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up.u_ump); |
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return (-1); |
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} |
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kf->va_fsid = up.u_dev; |
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kf->va_fileid = (long)up.u_ino; |
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kf->va_mode = udf_permtomode(&up); /* XXX */ |
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kf->va_rdev = 0; |
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kf->va_nlink = letoh16(fentry.link_cnt); |
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if (vp->v_type & VDIR) { |
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/* |
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* Directories that are recorded within their ICB will show |
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* as having 0 blocks recorded. Since tradition dictates |
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* that directories consume at least one logical block, |
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* make it appear so. |
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*/ |
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if (fentry.logblks_rec != 0) { |
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kf->va_size = |
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letoh64(fentry.logblks_rec) * um.um_bsize; |
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} else { |
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kf->va_size = um.um_bsize; |
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} |
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} else { |
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kf->va_size = letoh64(fentry.inf_len); |
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} |
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return (0); |
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} |