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https://github.com/freebsd/freebsd-src
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834 lines
19 KiB
C
834 lines
19 KiB
C
/*-
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* Copyright (c) 1994
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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
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* by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
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* Support code is derived from software contributed to Berkeley
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* by Atsushi Murai (amurai@spec.co.jp).
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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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* 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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* @(#)cd9660_vnops.c 8.19 (Berkeley) 5/27/95
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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/systm.h>
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#include <sys/namei.h>
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#include <sys/kernel.h>
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#include <sys/conf.h>
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#include <sys/stat.h>
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#include <sys/bio.h>
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#include <sys/buf.h>
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#include <sys/mount.h>
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#include <sys/vnode.h>
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#include <fs/fifofs/fifo.h>
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#include <sys/malloc.h>
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#include <sys/dirent.h>
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#include <sys/unistd.h>
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#include <sys/filio.h>
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#include <vm/vm.h>
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#include <vm/vnode_pager.h>
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#include <vm/uma.h>
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#include <isofs/cd9660/iso.h>
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#include <isofs/cd9660/cd9660_node.h>
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#include <isofs/cd9660/iso_rrip.h>
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static vop_setattr_t cd9660_setattr;
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static vop_open_t cd9660_open;
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static vop_access_t cd9660_access;
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static vop_getattr_t cd9660_getattr;
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static vop_ioctl_t cd9660_ioctl;
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static vop_pathconf_t cd9660_pathconf;
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static vop_read_t cd9660_read;
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struct isoreaddir;
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static int iso_uiodir(struct isoreaddir *idp, struct dirent *dp, off_t off);
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static int iso_shipdir(struct isoreaddir *idp);
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static vop_readdir_t cd9660_readdir;
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static vop_readlink_t cd9660_readlink;
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static vop_strategy_t cd9660_strategy;
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/*
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* Setattr call. Only allowed for block and character special devices.
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*/
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static int
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cd9660_setattr(ap)
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struct vop_setattr_args /* {
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struct vnodeop_desc *a_desc;
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struct vnode *a_vp;
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struct vattr *a_vap;
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struct ucred *a_cred;
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struct thread *a_td;
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} */ *ap;
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{
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struct vnode *vp = ap->a_vp;
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struct vattr *vap = ap->a_vap;
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if (vap->va_flags != (u_long)VNOVAL || vap->va_uid != (uid_t)VNOVAL ||
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vap->va_gid != (gid_t)VNOVAL || vap->va_atime.tv_sec != VNOVAL ||
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vap->va_mtime.tv_sec != VNOVAL || vap->va_mode != (mode_t)VNOVAL)
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return (EROFS);
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if (vap->va_size != (u_quad_t)VNOVAL) {
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switch (vp->v_type) {
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case VDIR:
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return (EISDIR);
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case VLNK:
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case VREG:
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return (EROFS);
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case VCHR:
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case VBLK:
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case VSOCK:
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case VFIFO:
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case VNON:
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case VBAD:
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case VMARKER:
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return (0);
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}
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}
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return (0);
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}
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/*
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* Check mode permission on inode pointer. Mode is READ, WRITE or EXEC.
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* The mode is shifted to select the owner/group/other fields. The
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* super user is granted all permissions.
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*/
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/* ARGSUSED */
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static int
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cd9660_access(ap)
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struct vop_access_args /* {
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struct vnode *a_vp;
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int a_mode;
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struct ucred *a_cred;
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struct thread *a_td;
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} */ *ap;
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{
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struct vnode *vp = ap->a_vp;
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struct iso_node *ip = VTOI(vp);
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mode_t mode = ap->a_mode;
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if (vp->v_type == VCHR || vp->v_type == VBLK)
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return (EOPNOTSUPP);
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/*
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* Disallow write attempts unless the file is a socket,
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* fifo, or a block or character device resident on the
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* filesystem.
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*/
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if (mode & VWRITE) {
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switch (vp->v_type) {
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case VDIR:
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case VLNK:
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case VREG:
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return (EROFS);
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/* NOT REACHED */
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default:
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break;
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}
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}
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return (vaccess(vp->v_type, ip->inode.iso_mode, ip->inode.iso_uid,
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ip->inode.iso_gid, ap->a_mode, ap->a_cred, NULL));
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}
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static int
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cd9660_open(ap)
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struct vop_open_args /* {
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struct vnode *a_vp;
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int a_mode;
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struct ucred *a_cred;
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struct thread *a_td;
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int a_fdidx;
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} */ *ap;
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{
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struct iso_node *ip = VTOI(ap->a_vp);
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vnode_create_vobject(ap->a_vp, ip->i_size, ap->a_td);
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return 0;
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}
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static int
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cd9660_getattr(ap)
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struct vop_getattr_args /* {
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struct vnode *a_vp;
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struct vattr *a_vap;
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struct ucred *a_cred;
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struct thread *a_td;
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} */ *ap;
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{
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struct vnode *vp = ap->a_vp;
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struct vattr *vap = ap->a_vap;
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struct iso_node *ip = VTOI(vp);
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vap->va_fsid = dev2udev(ip->i_mnt->im_dev);
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vap->va_fileid = ip->i_number;
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vap->va_mode = ip->inode.iso_mode;
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vap->va_nlink = ip->inode.iso_links;
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vap->va_uid = ip->inode.iso_uid;
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vap->va_gid = ip->inode.iso_gid;
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vap->va_atime = ip->inode.iso_atime;
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vap->va_mtime = ip->inode.iso_mtime;
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vap->va_ctime = ip->inode.iso_ctime;
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vap->va_rdev = ip->inode.iso_rdev;
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vap->va_size = (u_quad_t) ip->i_size;
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if (ip->i_size == 0 && (vap->va_mode & S_IFMT) == S_IFLNK) {
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struct vop_readlink_args rdlnk;
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struct iovec aiov;
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struct uio auio;
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char *cp;
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MALLOC(cp, char *, MAXPATHLEN, M_TEMP, M_WAITOK);
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aiov.iov_base = cp;
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aiov.iov_len = MAXPATHLEN;
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auio.uio_iov = &aiov;
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auio.uio_iovcnt = 1;
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auio.uio_offset = 0;
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auio.uio_rw = UIO_READ;
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auio.uio_segflg = UIO_SYSSPACE;
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auio.uio_td = ap->a_td;
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auio.uio_resid = MAXPATHLEN;
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rdlnk.a_uio = &auio;
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rdlnk.a_vp = ap->a_vp;
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rdlnk.a_cred = ap->a_cred;
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if (cd9660_readlink(&rdlnk) == 0)
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vap->va_size = MAXPATHLEN - auio.uio_resid;
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FREE(cp, M_TEMP);
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}
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vap->va_flags = 0;
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vap->va_gen = 1;
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vap->va_blocksize = ip->i_mnt->logical_block_size;
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vap->va_bytes = (u_quad_t) ip->i_size;
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vap->va_type = vp->v_type;
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vap->va_filerev = 0;
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return (0);
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}
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/*
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* Vnode op for ioctl.
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*/
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static int
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cd9660_ioctl(ap)
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struct vop_ioctl_args /* {
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struct vnode *a_vp;
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u_long a_command;
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caddr_t a_data;
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int a_fflag;
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struct ucred *a_cred;
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struct thread *a_td;
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} */ *ap;
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{
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struct vnode *vp = ap->a_vp;
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struct iso_node *ip = VTOI(vp);
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if (vp->v_type == VCHR || vp->v_type == VBLK)
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return (EOPNOTSUPP);
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switch (ap->a_command) {
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case FIOGETLBA:
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*(int *)(ap->a_data) = ip->iso_start;
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return 0;
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default:
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return (ENOTTY);
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}
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}
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/*
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* Vnode op for reading.
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*/
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static int
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cd9660_read(ap)
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struct vop_read_args /* {
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struct vnode *a_vp;
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struct uio *a_uio;
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int a_ioflag;
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struct ucred *a_cred;
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} */ *ap;
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{
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struct vnode *vp = ap->a_vp;
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struct uio *uio = ap->a_uio;
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struct iso_node *ip = VTOI(vp);
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struct iso_mnt *imp;
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struct buf *bp;
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daddr_t lbn, rablock;
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off_t diff;
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int rasize, error = 0;
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int seqcount;
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long size, n, on;
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if (vp->v_type == VCHR || vp->v_type == VBLK)
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return (EOPNOTSUPP);
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seqcount = ap->a_ioflag >> IO_SEQSHIFT;
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if (uio->uio_resid == 0)
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return (0);
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if (uio->uio_offset < 0)
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return (EINVAL);
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ip->i_flag |= IN_ACCESS;
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imp = ip->i_mnt;
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do {
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lbn = lblkno(imp, uio->uio_offset);
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on = blkoff(imp, uio->uio_offset);
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n = min((u_int)(imp->logical_block_size - on),
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uio->uio_resid);
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diff = (off_t)ip->i_size - uio->uio_offset;
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if (diff <= 0)
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return (0);
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if (diff < n)
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n = diff;
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size = blksize(imp, ip, lbn);
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rablock = lbn + 1;
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if ((vp->v_mount->mnt_flag & MNT_NOCLUSTERR) == 0) {
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if (lblktosize(imp, rablock) < ip->i_size)
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error = cluster_read(vp, (off_t)ip->i_size,
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lbn, size, NOCRED, uio->uio_resid,
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(ap->a_ioflag >> 16), &bp);
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else
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error = bread(vp, lbn, size, NOCRED, &bp);
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} else {
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if (seqcount > 1 &&
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lblktosize(imp, rablock) < ip->i_size) {
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rasize = blksize(imp, ip, rablock);
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error = breadn(vp, lbn, size, &rablock,
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&rasize, 1, NOCRED, &bp);
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} else
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error = bread(vp, lbn, size, NOCRED, &bp);
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}
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n = min(n, size - bp->b_resid);
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if (error) {
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brelse(bp);
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return (error);
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}
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error = uiomove(bp->b_data + on, (int)n, uio);
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brelse(bp);
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} while (error == 0 && uio->uio_resid > 0 && n != 0);
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return (error);
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}
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/*
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* Structure for reading directories
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*/
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struct isoreaddir {
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struct dirent saveent;
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struct dirent assocent;
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struct dirent current;
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off_t saveoff;
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off_t assocoff;
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off_t curroff;
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struct uio *uio;
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off_t uio_off;
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int eofflag;
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u_long *cookies;
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int ncookies;
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};
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static int
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iso_uiodir(idp,dp,off)
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struct isoreaddir *idp;
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struct dirent *dp;
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off_t off;
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{
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int error;
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dp->d_name[dp->d_namlen] = 0;
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dp->d_reclen = GENERIC_DIRSIZ(dp);
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if (idp->uio->uio_resid < dp->d_reclen) {
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idp->eofflag = 0;
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return (-1);
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}
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if (idp->cookies) {
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if (idp->ncookies <= 0) {
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idp->eofflag = 0;
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return (-1);
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}
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*idp->cookies++ = off;
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--idp->ncookies;
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}
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if ((error = uiomove(dp, dp->d_reclen, idp->uio)) != 0)
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return (error);
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idp->uio_off = off;
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return (0);
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}
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static int
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iso_shipdir(idp)
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struct isoreaddir *idp;
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{
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struct dirent *dp;
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int cl, sl, assoc;
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int error;
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char *cname, *sname;
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cl = idp->current.d_namlen;
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cname = idp->current.d_name;
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assoc = (cl > 1) && (*cname == ASSOCCHAR);
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if (assoc) {
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cl--;
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cname++;
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}
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dp = &idp->saveent;
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sname = dp->d_name;
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if (!(sl = dp->d_namlen)) {
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dp = &idp->assocent;
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sname = dp->d_name + 1;
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sl = dp->d_namlen - 1;
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}
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if (sl > 0) {
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if (sl != cl
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|| bcmp(sname,cname,sl)) {
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if (idp->assocent.d_namlen) {
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if ((error = iso_uiodir(idp,&idp->assocent,idp->assocoff)) != 0)
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return (error);
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idp->assocent.d_namlen = 0;
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}
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if (idp->saveent.d_namlen) {
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if ((error = iso_uiodir(idp,&idp->saveent,idp->saveoff)) != 0)
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return (error);
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idp->saveent.d_namlen = 0;
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}
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}
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}
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idp->current.d_reclen = GENERIC_DIRSIZ(&idp->current);
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if (assoc) {
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idp->assocoff = idp->curroff;
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bcopy(&idp->current,&idp->assocent,idp->current.d_reclen);
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} else {
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idp->saveoff = idp->curroff;
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bcopy(&idp->current,&idp->saveent,idp->current.d_reclen);
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}
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return (0);
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}
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/*
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* Vnode op for readdir
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*/
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static int
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cd9660_readdir(ap)
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struct vop_readdir_args /* {
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struct vnode *a_vp;
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struct uio *a_uio;
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struct ucred *a_cred;
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int *a_eofflag;
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int *a_ncookies;
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u_long **a_cookies;
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} */ *ap;
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{
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struct uio *uio = ap->a_uio;
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struct isoreaddir *idp;
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struct vnode *vdp = ap->a_vp;
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struct iso_node *dp;
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struct iso_mnt *imp;
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struct buf *bp = NULL;
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struct iso_directory_record *ep;
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int entryoffsetinblock;
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doff_t endsearch;
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u_long bmask;
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int error = 0;
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int reclen;
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u_short namelen;
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int ncookies = 0;
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u_long *cookies = NULL;
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dp = VTOI(vdp);
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imp = dp->i_mnt;
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bmask = imp->im_bmask;
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MALLOC(idp, struct isoreaddir *, sizeof(*idp), M_TEMP, M_WAITOK);
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idp->saveent.d_namlen = idp->assocent.d_namlen = 0;
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/*
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* XXX
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|
* Is it worth trying to figure out the type?
|
|
*/
|
|
idp->saveent.d_type = idp->assocent.d_type = idp->current.d_type =
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DT_UNKNOWN;
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idp->uio = uio;
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if (ap->a_ncookies == NULL) {
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|
idp->cookies = NULL;
|
|
} else {
|
|
/*
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|
* Guess the number of cookies needed.
|
|
*/
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|
ncookies = uio->uio_resid / 16;
|
|
MALLOC(cookies, u_long *, ncookies * sizeof(u_long),
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|
M_TEMP, M_WAITOK);
|
|
idp->cookies = cookies;
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|
idp->ncookies = ncookies;
|
|
}
|
|
idp->eofflag = 1;
|
|
idp->curroff = uio->uio_offset;
|
|
|
|
if ((entryoffsetinblock = idp->curroff & bmask) &&
|
|
(error = cd9660_blkatoff(vdp, (off_t)idp->curroff, NULL, &bp))) {
|
|
FREE(idp, M_TEMP);
|
|
return (error);
|
|
}
|
|
endsearch = dp->i_size;
|
|
|
|
while (idp->curroff < endsearch) {
|
|
/*
|
|
* If offset is on a block boundary,
|
|
* read the next directory block.
|
|
* Release previous if it exists.
|
|
*/
|
|
if ((idp->curroff & bmask) == 0) {
|
|
if (bp != NULL)
|
|
brelse(bp);
|
|
if ((error =
|
|
cd9660_blkatoff(vdp, (off_t)idp->curroff, NULL, &bp)) != 0)
|
|
break;
|
|
entryoffsetinblock = 0;
|
|
}
|
|
/*
|
|
* Get pointer to next entry.
|
|
*/
|
|
ep = (struct iso_directory_record *)
|
|
((char *)bp->b_data + entryoffsetinblock);
|
|
|
|
reclen = isonum_711(ep->length);
|
|
if (reclen == 0) {
|
|
/* skip to next block, if any */
|
|
idp->curroff =
|
|
(idp->curroff & ~bmask) + imp->logical_block_size;
|
|
continue;
|
|
}
|
|
|
|
if (reclen < ISO_DIRECTORY_RECORD_SIZE) {
|
|
error = EINVAL;
|
|
/* illegal entry, stop */
|
|
break;
|
|
}
|
|
|
|
if (entryoffsetinblock + reclen > imp->logical_block_size) {
|
|
error = EINVAL;
|
|
/* illegal directory, so stop looking */
|
|
break;
|
|
}
|
|
|
|
idp->current.d_namlen = isonum_711(ep->name_len);
|
|
|
|
if (reclen < ISO_DIRECTORY_RECORD_SIZE + idp->current.d_namlen) {
|
|
error = EINVAL;
|
|
/* illegal entry, stop */
|
|
break;
|
|
}
|
|
|
|
if (isonum_711(ep->flags)&2)
|
|
idp->current.d_fileno = isodirino(ep, imp);
|
|
else
|
|
idp->current.d_fileno = dbtob(bp->b_blkno) +
|
|
entryoffsetinblock;
|
|
|
|
idp->curroff += reclen;
|
|
|
|
switch (imp->iso_ftype) {
|
|
case ISO_FTYPE_RRIP:
|
|
cd9660_rrip_getname(ep,idp->current.d_name, &namelen,
|
|
&idp->current.d_fileno,imp);
|
|
idp->current.d_namlen = (u_char)namelen;
|
|
if (idp->current.d_namlen)
|
|
error = iso_uiodir(idp,&idp->current,idp->curroff);
|
|
break;
|
|
default: /* ISO_FTYPE_DEFAULT || ISO_FTYPE_9660 || ISO_FTYPE_HIGH_SIERRA*/
|
|
strcpy(idp->current.d_name,"..");
|
|
if (idp->current.d_namlen == 1 && ep->name[0] == 0) {
|
|
idp->current.d_namlen = 1;
|
|
error = iso_uiodir(idp,&idp->current,idp->curroff);
|
|
} else if (idp->current.d_namlen == 1 && ep->name[0] == 1) {
|
|
idp->current.d_namlen = 2;
|
|
error = iso_uiodir(idp,&idp->current,idp->curroff);
|
|
} else {
|
|
isofntrans(ep->name,idp->current.d_namlen,
|
|
idp->current.d_name, &namelen,
|
|
imp->iso_ftype == ISO_FTYPE_9660,
|
|
isonum_711(ep->flags)&4,
|
|
imp->joliet_level,
|
|
imp->im_flags,
|
|
imp->im_d2l);
|
|
idp->current.d_namlen = (u_char)namelen;
|
|
if (imp->iso_ftype == ISO_FTYPE_DEFAULT)
|
|
error = iso_shipdir(idp);
|
|
else
|
|
error = iso_uiodir(idp,&idp->current,idp->curroff);
|
|
}
|
|
}
|
|
if (error)
|
|
break;
|
|
|
|
entryoffsetinblock += reclen;
|
|
}
|
|
|
|
if (!error && imp->iso_ftype == ISO_FTYPE_DEFAULT) {
|
|
idp->current.d_namlen = 0;
|
|
error = iso_shipdir(idp);
|
|
}
|
|
if (error < 0)
|
|
error = 0;
|
|
|
|
if (ap->a_ncookies != NULL) {
|
|
if (error)
|
|
free(cookies, M_TEMP);
|
|
else {
|
|
/*
|
|
* Work out the number of cookies actually used.
|
|
*/
|
|
*ap->a_ncookies = ncookies - idp->ncookies;
|
|
*ap->a_cookies = cookies;
|
|
}
|
|
}
|
|
|
|
if (bp)
|
|
brelse (bp);
|
|
|
|
uio->uio_offset = idp->uio_off;
|
|
*ap->a_eofflag = idp->eofflag;
|
|
|
|
FREE(idp, M_TEMP);
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Return target name of a symbolic link
|
|
* Shouldn't we get the parent vnode and read the data from there?
|
|
* This could eventually result in deadlocks in cd9660_lookup.
|
|
* But otherwise the block read here is in the block buffer two times.
|
|
*/
|
|
typedef struct iso_directory_record ISODIR;
|
|
typedef struct iso_node ISONODE;
|
|
typedef struct iso_mnt ISOMNT;
|
|
static int
|
|
cd9660_readlink(ap)
|
|
struct vop_readlink_args /* {
|
|
struct vnode *a_vp;
|
|
struct uio *a_uio;
|
|
struct ucred *a_cred;
|
|
} */ *ap;
|
|
{
|
|
ISONODE *ip;
|
|
ISODIR *dirp;
|
|
ISOMNT *imp;
|
|
struct buf *bp;
|
|
struct uio *uio;
|
|
u_short symlen;
|
|
int error;
|
|
char *symname;
|
|
|
|
ip = VTOI(ap->a_vp);
|
|
imp = ip->i_mnt;
|
|
uio = ap->a_uio;
|
|
|
|
if (imp->iso_ftype != ISO_FTYPE_RRIP)
|
|
return (EINVAL);
|
|
|
|
/*
|
|
* Get parents directory record block that this inode included.
|
|
*/
|
|
error = bread(imp->im_devvp,
|
|
(ip->i_number >> imp->im_bshift) <<
|
|
(imp->im_bshift - DEV_BSHIFT),
|
|
imp->logical_block_size, NOCRED, &bp);
|
|
if (error) {
|
|
brelse(bp);
|
|
return (EINVAL);
|
|
}
|
|
|
|
/*
|
|
* Setup the directory pointer for this inode
|
|
*/
|
|
dirp = (ISODIR *)(bp->b_data + (ip->i_number & imp->im_bmask));
|
|
|
|
/*
|
|
* Just make sure, we have a right one....
|
|
* 1: Check not cross boundary on block
|
|
*/
|
|
if ((ip->i_number & imp->im_bmask) + isonum_711(dirp->length)
|
|
> (unsigned)imp->logical_block_size) {
|
|
brelse(bp);
|
|
return (EINVAL);
|
|
}
|
|
|
|
/*
|
|
* Now get a buffer
|
|
* Abuse a namei buffer for now.
|
|
*/
|
|
if (uio->uio_segflg == UIO_SYSSPACE)
|
|
symname = uio->uio_iov->iov_base;
|
|
else
|
|
symname = uma_zalloc(namei_zone, M_WAITOK);
|
|
|
|
/*
|
|
* Ok, we just gathering a symbolic name in SL record.
|
|
*/
|
|
if (cd9660_rrip_getsymname(dirp, symname, &symlen, imp) == 0) {
|
|
if (uio->uio_segflg != UIO_SYSSPACE)
|
|
uma_zfree(namei_zone, symname);
|
|
brelse(bp);
|
|
return (EINVAL);
|
|
}
|
|
/*
|
|
* Don't forget before you leave from home ;-)
|
|
*/
|
|
brelse(bp);
|
|
|
|
/*
|
|
* return with the symbolic name to caller's.
|
|
*/
|
|
if (uio->uio_segflg != UIO_SYSSPACE) {
|
|
error = uiomove(symname, symlen, uio);
|
|
uma_zfree(namei_zone, symname);
|
|
return (error);
|
|
}
|
|
uio->uio_resid -= symlen;
|
|
uio->uio_iov->iov_base = (char *)uio->uio_iov->iov_base + symlen;
|
|
uio->uio_iov->iov_len -= symlen;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Calculate the logical to physical mapping if not done already,
|
|
* then call the device strategy routine.
|
|
*/
|
|
static int
|
|
cd9660_strategy(ap)
|
|
struct vop_strategy_args /* {
|
|
struct buf *a_vp;
|
|
struct buf *a_bp;
|
|
} */ *ap;
|
|
{
|
|
struct buf *bp = ap->a_bp;
|
|
struct vnode *vp = ap->a_vp;
|
|
struct iso_node *ip;
|
|
struct bufobj *bo;
|
|
|
|
ip = VTOI(vp);
|
|
if (vp->v_type == VBLK || vp->v_type == VCHR)
|
|
panic("cd9660_strategy: spec");
|
|
if (bp->b_blkno == bp->b_lblkno) {
|
|
bp->b_blkno = (ip->iso_start + bp->b_lblkno) <<
|
|
(ip->i_mnt->im_bshift - DEV_BSHIFT);
|
|
if ((long)bp->b_blkno == -1) /* XXX: cut&paste junk ? */
|
|
clrbuf(bp);
|
|
}
|
|
if ((long)bp->b_blkno == -1) { /* XXX: cut&paste junk ? */
|
|
bufdone(bp);
|
|
return (0);
|
|
}
|
|
bp->b_iooffset = dbtob(bp->b_blkno);
|
|
bo = ip->i_mnt->im_bo;
|
|
BO_STRATEGY(bo, bp);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Return POSIX pathconf information applicable to cd9660 filesystems.
|
|
*/
|
|
static int
|
|
cd9660_pathconf(ap)
|
|
struct vop_pathconf_args /* {
|
|
struct vnode *a_vp;
|
|
int a_name;
|
|
register_t *a_retval;
|
|
} */ *ap;
|
|
{
|
|
|
|
switch (ap->a_name) {
|
|
case _PC_LINK_MAX:
|
|
*ap->a_retval = 1;
|
|
return (0);
|
|
case _PC_NAME_MAX:
|
|
if (VTOI(ap->a_vp)->i_mnt->iso_ftype == ISO_FTYPE_RRIP)
|
|
*ap->a_retval = NAME_MAX;
|
|
else
|
|
*ap->a_retval = 37;
|
|
return (0);
|
|
case _PC_PATH_MAX:
|
|
*ap->a_retval = PATH_MAX;
|
|
return (0);
|
|
case _PC_PIPE_BUF:
|
|
*ap->a_retval = PIPE_BUF;
|
|
return (0);
|
|
case _PC_CHOWN_RESTRICTED:
|
|
*ap->a_retval = 1;
|
|
return (0);
|
|
case _PC_NO_TRUNC:
|
|
*ap->a_retval = 1;
|
|
return (0);
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
/*
|
|
* Global vfs data structures for cd9660
|
|
*/
|
|
struct vop_vector cd9660_vnodeops = {
|
|
.vop_default = &default_vnodeops,
|
|
.vop_open = cd9660_open,
|
|
.vop_access = cd9660_access,
|
|
.vop_bmap = cd9660_bmap,
|
|
.vop_cachedlookup = cd9660_lookup,
|
|
.vop_getattr = cd9660_getattr,
|
|
.vop_inactive = cd9660_inactive,
|
|
.vop_ioctl = cd9660_ioctl,
|
|
.vop_lookup = vfs_cache_lookup,
|
|
.vop_pathconf = cd9660_pathconf,
|
|
.vop_read = cd9660_read,
|
|
.vop_readdir = cd9660_readdir,
|
|
.vop_readlink = cd9660_readlink,
|
|
.vop_reclaim = cd9660_reclaim,
|
|
.vop_setattr = cd9660_setattr,
|
|
.vop_strategy = cd9660_strategy,
|
|
};
|
|
|
|
/*
|
|
* Special device vnode ops
|
|
*/
|
|
|
|
struct vop_vector cd9660_fifoops = {
|
|
.vop_default = &fifo_specops,
|
|
.vop_access = cd9660_access,
|
|
.vop_getattr = cd9660_getattr,
|
|
.vop_inactive = cd9660_inactive,
|
|
.vop_reclaim = cd9660_reclaim,
|
|
.vop_setattr = cd9660_setattr,
|
|
};
|