964 lines
21 KiB
C
964 lines
21 KiB
C
/* $NetBSD: advnops.c,v 1.57 2001/02/27 04:37:44 chs Exp $ */
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/*
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* Copyright (c) 1994 Christian E. Hopps
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* Copyright (c) 1996 Matthias Scheler
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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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* 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 Christian E. Hopps.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#if defined(_KERNEL) && !defined(_LKM)
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#include "opt_quota.h"
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#endif
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/vnode.h>
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#include <sys/mount.h>
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#include <sys/time.h>
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#include <sys/queue.h>
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#include <sys/namei.h>
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#include <sys/buf.h>
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#include <sys/dirent.h>
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#include <sys/malloc.h>
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#include <sys/pool.h>
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#include <sys/stat.h>
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#include <sys/unistd.h>
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#include <sys/proc.h>
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#include <miscfs/genfs/genfs.h>
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#include <miscfs/specfs/specdev.h>
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#include <adosfs/adosfs.h>
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extern struct vnodeops adosfs_vnodeops;
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#define adosfs_open genfs_nullop
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int adosfs_getattr __P((void *));
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int adosfs_read __P((void *));
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int adosfs_write __P((void *));
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#define adosfs_fcntl genfs_fcntl
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#define adosfs_ioctl genfs_enoioctl
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#define adosfs_poll genfs_poll
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int adosfs_strategy __P((void *));
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int adosfs_link __P((void *));
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int adosfs_symlink __P((void *));
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#define adosfs_abortop genfs_abortop
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int adosfs_bmap __P((void *));
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int adosfs_print __P((void *));
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int adosfs_readdir __P((void *));
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int adosfs_access __P((void *));
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int adosfs_readlink __P((void *));
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int adosfs_inactive __P((void *));
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int adosfs_reclaim __P((void *));
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int adosfs_pathconf __P((void *));
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#define adosfs_close genfs_nullop
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#define adosfs_fsync genfs_nullop
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#define adosfs_lease_check genfs_lease_check
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#define adosfs_seek genfs_seek
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#define adosfs_vfree genfs_nullop
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#define adosfs_advlock genfs_einval
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#define adosfs_blkatoff genfs_eopnotsupp
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#define adosfs_bwrite genfs_eopnotsupp
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#define adosfs_create genfs_eopnotsupp
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#define adosfs_mkdir genfs_eopnotsupp
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#define adosfs_mknod genfs_eopnotsupp
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#define adosfs_revoke genfs_revoke
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#define adosfs_mmap genfs_eopnotsupp
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#define adosfs_remove genfs_eopnotsupp
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#define adosfs_rename genfs_eopnotsupp
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#define adosfs_rmdir genfs_eopnotsupp
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#define adosfs_setattr genfs_eopnotsupp
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#define adosfs_truncate genfs_eopnotsupp
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#define adosfs_update genfs_nullop
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#define adosfs_valloc genfs_eopnotsupp
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const struct vnodeopv_entry_desc adosfs_vnodeop_entries[] = {
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{ &vop_default_desc, vn_default_error },
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{ &vop_lookup_desc, adosfs_lookup }, /* lookup */
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{ &vop_create_desc, adosfs_create }, /* create */
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{ &vop_mknod_desc, adosfs_mknod }, /* mknod */
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{ &vop_open_desc, adosfs_open }, /* open */
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{ &vop_close_desc, adosfs_close }, /* close */
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{ &vop_access_desc, adosfs_access }, /* access */
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{ &vop_getattr_desc, adosfs_getattr }, /* getattr */
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{ &vop_setattr_desc, adosfs_setattr }, /* setattr */
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{ &vop_read_desc, adosfs_read }, /* read */
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{ &vop_write_desc, adosfs_write }, /* write */
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{ &vop_lease_desc, adosfs_lease_check }, /* lease */
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{ &vop_fcntl_desc, adosfs_fcntl }, /* fcntl */
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{ &vop_ioctl_desc, adosfs_ioctl }, /* ioctl */
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{ &vop_poll_desc, adosfs_poll }, /* poll */
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{ &vop_revoke_desc, adosfs_revoke }, /* revoke */
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{ &vop_mmap_desc, adosfs_mmap }, /* mmap */
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{ &vop_fsync_desc, adosfs_fsync }, /* fsync */
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{ &vop_seek_desc, adosfs_seek }, /* seek */
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{ &vop_remove_desc, adosfs_remove }, /* remove */
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{ &vop_link_desc, adosfs_link }, /* link */
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{ &vop_rename_desc, adosfs_rename }, /* rename */
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{ &vop_mkdir_desc, adosfs_mkdir }, /* mkdir */
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{ &vop_rmdir_desc, adosfs_rmdir }, /* rmdir */
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{ &vop_symlink_desc, adosfs_symlink }, /* symlink */
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{ &vop_readdir_desc, adosfs_readdir }, /* readdir */
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{ &vop_readlink_desc, adosfs_readlink }, /* readlink */
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{ &vop_abortop_desc, adosfs_abortop }, /* abortop */
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{ &vop_inactive_desc, adosfs_inactive }, /* inactive */
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{ &vop_reclaim_desc, adosfs_reclaim }, /* reclaim */
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{ &vop_lock_desc, genfs_lock }, /* lock */
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{ &vop_unlock_desc, genfs_unlock }, /* unlock */
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{ &vop_bmap_desc, adosfs_bmap }, /* bmap */
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{ &vop_strategy_desc, adosfs_strategy }, /* strategy */
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{ &vop_print_desc, adosfs_print }, /* print */
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{ &vop_islocked_desc, genfs_islocked }, /* islocked */
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{ &vop_pathconf_desc, adosfs_pathconf }, /* pathconf */
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{ &vop_advlock_desc, adosfs_advlock }, /* advlock */
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{ &vop_blkatoff_desc, adosfs_blkatoff }, /* blkatoff */
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{ &vop_valloc_desc, adosfs_valloc }, /* valloc */
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{ &vop_vfree_desc, adosfs_vfree }, /* vfree */
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{ &vop_truncate_desc, adosfs_truncate }, /* truncate */
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{ &vop_update_desc, adosfs_update }, /* update */
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{ &vop_bwrite_desc, adosfs_bwrite }, /* bwrite */
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{ &vop_getpages_desc, genfs_getpages }, /* getpages */
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{ &vop_size_desc, genfs_size }, /* size */
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{ NULL, NULL }
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};
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const struct vnodeopv_desc adosfs_vnodeop_opv_desc =
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{ &adosfs_vnodeop_p, adosfs_vnodeop_entries };
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int
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adosfs_getattr(v)
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void *v;
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{
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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 proc *a_p;
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} */ *sp = v;
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struct vattr *vap;
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struct adosfsmount *amp;
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struct anode *ap;
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u_long fblks;
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#ifdef ADOSFS_DIAGNOSTIC
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advopprint(sp);
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#endif
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vap = sp->a_vap;
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ap = VTOA(sp->a_vp);
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amp = ap->amp;
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vattr_null(vap);
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vap->va_uid = ap->uid;
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vap->va_gid = ap->gid;
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vap->va_fsid = sp->a_vp->v_mount->mnt_stat.f_fsid.val[0];
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vap->va_atime.tv_sec = vap->va_mtime.tv_sec = vap->va_ctime.tv_sec =
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ap->mtime.days * 24 * 60 * 60 + ap->mtime.mins * 60 +
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ap->mtime.ticks / 50 + (8 * 365 + 2) * 24 * 60 * 60;
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vap->va_atime.tv_nsec = vap->va_mtime.tv_nsec = vap->va_ctime.tv_nsec = 0;
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vap->va_gen = 0;
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vap->va_flags = 0;
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vap->va_rdev = NODEV;
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vap->va_fileid = ap->block;
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vap->va_type = sp->a_vp->v_type;
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vap->va_mode = adunixprot(ap->adprot) & amp->mask;
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if (sp->a_vp->v_type == VDIR) {
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vap->va_nlink = 1; /* XXX bogus, oh well */
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vap->va_bytes = amp->bsize;
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vap->va_size = amp->bsize;
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} else {
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/*
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* XXX actually we can track this if we were to walk the list
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* of links if it exists.
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* XXX for now, just set nlink to 2 if this is a hard link
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* to a file, or a file with a hard link.
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*/
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vap->va_nlink = 1 + (ap->linkto != 0);
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/*
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* round up to nearest blocks add number of file list
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* blocks needed and mutiply by number of bytes per block.
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*/
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fblks = howmany(ap->fsize, amp->dbsize);
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fblks += howmany(fblks, ANODENDATBLKENT(ap));
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vap->va_bytes = fblks * amp->dbsize;
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vap->va_size = ap->fsize;
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vap->va_blocksize = amp->dbsize;
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}
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#ifdef ADOSFS_DIAGNOSTIC
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printf(" 0)");
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#endif
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return(0);
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}
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/*
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* are things locked??? they need to be to avoid this being
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* deleted or changed (data block pointer blocks moving about.)
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*/
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int
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adosfs_read(v)
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void *v;
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{
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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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} */ *sp = v;
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struct vnode *vp = sp->a_vp;
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struct adosfsmount *amp;
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struct anode *ap;
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struct uio *uio;
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struct buf *bp;
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daddr_t lbn;
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int size, diff, error;
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long n, on;
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#ifdef ADOSFS_DIAGNOSTIC
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advopprint(sp);
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#endif
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error = 0;
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uio = sp->a_uio;
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ap = VTOA(sp->a_vp);
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amp = ap->amp;
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/*
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* Return EOF for character devices, EIO for others
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*/
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if (sp->a_vp->v_type != VREG) {
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error = EIO;
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goto reterr;
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}
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if (uio->uio_resid == 0)
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goto reterr;
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if (uio->uio_offset < 0) {
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error = EINVAL;
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goto reterr;
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}
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/*
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* to expensive to let general algorithm figure out that
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* we are beyond the file. Do it now.
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*/
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if (uio->uio_offset >= ap->fsize)
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goto reterr;
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/*
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* taken from ufs_read()
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*/
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if (vp->v_type == VREG) {
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error = 0;
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while (uio->uio_resid > 0) {
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void *win;
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vsize_t bytelen = MIN(ap->fsize - uio->uio_offset,
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uio->uio_resid);
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if (bytelen == 0) {
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break;
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}
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win = ubc_alloc(&vp->v_uvm.u_obj, uio->uio_offset,
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&bytelen, UBC_READ);
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error = uiomove(win, bytelen, uio);
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ubc_release(win, 0);
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if (error) {
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break;
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}
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}
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goto out;
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}
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do {
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/*
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* we are only supporting ADosFFS currently
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* (which have data blocks without headers)
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*/
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size = amp->dbsize;
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lbn = uio->uio_offset / size;
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on = uio->uio_offset % size;
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n = MIN(size - on, uio->uio_resid);
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diff = ap->fsize - uio->uio_offset;
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/*
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* check for EOF
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*/
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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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/*
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* read ahead could possibly be worth something
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* but not much as ados makes little attempt to
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* make things contigous
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*/
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error = bread(sp->a_vp, lbn * amp->bsize / DEV_BSIZE,
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amp->bsize, NOCRED, &bp);
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if (error) {
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brelse(bp);
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goto reterr;
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}
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sp->a_vp->v_lastr = lbn;
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if (!IS_FFS(amp)) {
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if (bp->b_resid > 0)
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error = EIO; /* OFS needs the complete block */
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else if (adoswordn(bp, 0) != BPT_DATA) {
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#ifdef DIAGNOSTIC
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printf("adosfs: bad primary type blk %ld\n",
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bp->b_blkno / (amp->bsize / DEV_BSIZE));
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#endif
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error=EINVAL;
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}
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else if ( adoscksum(bp, ap->nwords)) {
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#ifdef DIAGNOSTIC
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printf("adosfs: blk %ld failed cksum.\n",
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bp->b_blkno / (amp->bsize / DEV_BSIZE));
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#endif
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error=EINVAL;
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}
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}
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if (error) {
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brelse(bp);
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goto reterr;
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}
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#ifdef ADOSFS_DIAGNOSTIC
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printf(" %d+%d-%d+%d", lbn, on, lbn, n);
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#endif
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n = MIN(n, size - bp->b_resid);
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error = uiomove(bp->b_data + on +
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amp->bsize - amp->dbsize, (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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out:
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reterr:
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#ifdef ADOSFS_DIAGNOSTIC
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printf(" %d)", error);
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#endif
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return(error);
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}
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int
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adosfs_write(v)
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void *v;
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{
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#ifdef ADOSFS_DIAGNOSTIC
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struct vop_write_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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} */ *sp = v;
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advopprint(sp);
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printf(" EOPNOTSUPP)");
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#endif
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return(EOPNOTSUPP);
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}
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/*
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* Just call the device strategy routine
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*/
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int
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adosfs_strategy(v)
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void *v;
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{
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struct vop_strategy_args /* {
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struct buf *a_bp;
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} */ *sp = v;
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struct buf *bp;
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struct anode *ap;
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struct vnode *vp;
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int error;
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#ifdef ADOSFS_DIAGNOSTIC
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advopprint(sp);
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#endif
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error = 0;
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bp = sp->a_bp;
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if (bp->b_vp == NULL) {
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bp->b_flags |= B_ERROR;
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biodone(bp);
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error = EIO;
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goto reterr;
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}
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vp = bp->b_vp;
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ap = VTOA(vp);
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if (bp->b_blkno == bp->b_lblkno) {
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error = VOP_BMAP(vp, bp->b_lblkno, NULL, &bp->b_blkno, NULL);
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if (error) {
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bp->b_flags |= B_ERROR;
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biodone(bp);
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goto reterr;
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}
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}
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if ((long)bp->b_blkno == -1) {
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biodone(bp);
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error = 0;
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goto reterr;
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}
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vp = ap->amp->devvp;
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bp->b_dev = vp->v_rdev;
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VOCALL(vp->v_op, VOFFSET(vop_strategy), sp);
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reterr:
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#ifdef ADOSFS_DIAGNOSTIC
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printf(" %d)", error);
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#endif
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return(error);
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}
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|
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int
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adosfs_link(v)
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void *v;
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{
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struct vop_link_args /* {
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struct vnode *a_dvp;
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struct vnode *a_vp;
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struct componentname *a_cnp;
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} */ *ap = v;
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VOP_ABORTOP(ap->a_dvp, ap->a_cnp);
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vput(ap->a_dvp);
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return (EROFS);
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}
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|
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int
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adosfs_symlink(v)
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void *v;
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{
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struct vop_symlink_args /* {
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struct vnode *a_dvp;
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struct vnode **a_vpp;
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struct componentname *a_cnp;
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struct vattr *a_vap;
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char *a_target;
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} */ *ap = v;
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VOP_ABORTOP(ap->a_dvp, ap->a_cnp);
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vput(ap->a_dvp);
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return (EROFS);
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}
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|
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/*
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* Wait until the vnode has finished changing state.
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*/
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int
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adosfs_bmap(v)
|
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void *v;
|
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{
|
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struct vop_bmap_args /* {
|
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struct vnode *a_vp;
|
|
daddr_t a_bn;
|
|
struct vnode **a_vpp;
|
|
daddr_t *a_bnp;
|
|
int *a_runp;
|
|
} */ *sp = v;
|
|
struct anode *ap;
|
|
struct buf *flbp;
|
|
long nb, flblk, flblkoff, fcnt;
|
|
daddr_t *bnp;
|
|
daddr_t bn;
|
|
int error;
|
|
|
|
#ifdef ADOSFS_DIAGNOSTIC
|
|
advopprint(sp);
|
|
#endif
|
|
ap = VTOA(sp->a_vp);
|
|
bn = sp->a_bn / (ap->amp->bsize / DEV_BSIZE);
|
|
bnp = sp->a_bnp;
|
|
error = 0;
|
|
|
|
if (sp->a_vpp != NULL)
|
|
*sp->a_vpp = ap->amp->devvp;
|
|
if (bnp == NULL)
|
|
goto reterr;
|
|
if (bn < 0) {
|
|
error = EFBIG;
|
|
goto reterr;
|
|
}
|
|
if (sp->a_vp->v_type != VREG) {
|
|
error = EINVAL;
|
|
goto reterr;
|
|
}
|
|
|
|
/*
|
|
* walk the chain of file list blocks until we find
|
|
* the one that will yield the block pointer we need.
|
|
*/
|
|
if (ap->type == AFILE)
|
|
nb = ap->block; /* pointer to ourself */
|
|
else if (ap->type == ALFILE)
|
|
nb = ap->linkto; /* pointer to real file */
|
|
else {
|
|
error = EINVAL;
|
|
goto reterr;
|
|
}
|
|
|
|
flblk = bn / ANODENDATBLKENT(ap);
|
|
flbp = NULL;
|
|
|
|
/*
|
|
* check last indirect block cache
|
|
*/
|
|
if (flblk < ap->lastlindblk)
|
|
fcnt = 0;
|
|
else {
|
|
flblk -= ap->lastlindblk;
|
|
fcnt = ap->lastlindblk;
|
|
nb = ap->lastindblk;
|
|
}
|
|
while (flblk >= 0) {
|
|
if (flbp)
|
|
brelse(flbp);
|
|
if (nb == 0) {
|
|
#ifdef DIAGNOSTIC
|
|
printf("adosfs: bad file list chain.\n");
|
|
#endif
|
|
error = EINVAL;
|
|
goto reterr;
|
|
}
|
|
error = bread(ap->amp->devvp, nb * ap->amp->bsize / DEV_BSIZE,
|
|
ap->amp->bsize, NOCRED, &flbp);
|
|
if (error) {
|
|
brelse(flbp);
|
|
goto reterr;
|
|
}
|
|
if (adoscksum(flbp, ap->nwords)) {
|
|
#ifdef DIAGNOSTIC
|
|
printf("adosfs: blk %ld failed cksum.\n", nb);
|
|
#endif
|
|
brelse(flbp);
|
|
error = EINVAL;
|
|
goto reterr;
|
|
}
|
|
/*
|
|
* update last indirect block cache
|
|
*/
|
|
ap->lastlindblk = fcnt++;
|
|
ap->lastindblk = nb;
|
|
|
|
nb = adoswordn(flbp, ap->nwords - 2);
|
|
flblk--;
|
|
}
|
|
/*
|
|
* calculate offset of block number in table. The table starts
|
|
* at nwords - 51 and goes to offset 6 or less if indicated by the
|
|
* valid table entries stored at offset ADBI_NBLKTABENT.
|
|
*/
|
|
flblkoff = bn % ANODENDATBLKENT(ap);
|
|
if (flblkoff < adoswordn(flbp, 2 /* ADBI_NBLKTABENT */)) {
|
|
flblkoff = (ap->nwords - 51) - flblkoff;
|
|
*bnp = adoswordn(flbp, flblkoff) * ap->amp->bsize / DEV_BSIZE;
|
|
} else {
|
|
#ifdef DIAGNOSTIC
|
|
printf("flblk offset %ld too large in lblk %ld blk %d\n",
|
|
flblkoff, bn / (ap->amp->bsize / DEV_BSIZE), flbp->b_blkno);
|
|
#endif
|
|
error = EINVAL;
|
|
}
|
|
brelse(flbp);
|
|
reterr:
|
|
#ifdef ADOSFS_DIAGNOSTIC
|
|
if (error == 0 && bnp)
|
|
printf(" %d => %d", bn, *bnp);
|
|
printf(" %d)", error);
|
|
#endif
|
|
return(error);
|
|
}
|
|
|
|
/*
|
|
* Print out the contents of a adosfs vnode.
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
adosfs_print(v)
|
|
void *v;
|
|
{
|
|
#if 0
|
|
struct vop_print_args /* {
|
|
struct vnode *a_vp;
|
|
} */ *sp = v;
|
|
#endif
|
|
return(0);
|
|
}
|
|
|
|
struct adirent {
|
|
u_long fileno;
|
|
u_short reclen;
|
|
char type;
|
|
char namlen;
|
|
char name[32]; /* maxlen of 30 plus 2 NUL's */
|
|
};
|
|
|
|
int
|
|
adosfs_readdir(v)
|
|
void *v;
|
|
{
|
|
struct vop_readdir_args /* {
|
|
struct vnode *a_vp;
|
|
struct uio *a_uio;
|
|
struct ucred *a_cred;
|
|
int *a_eofflag;
|
|
off_t **a_cookies;
|
|
int *a_ncookies;
|
|
} */ *sp = v;
|
|
int error, useri, chainc, hashi, scanned, uavail;
|
|
struct adirent ad, *adp;
|
|
struct anode *pap, *ap;
|
|
struct adosfsmount *amp;
|
|
struct vnode *vp;
|
|
struct uio *uio;
|
|
u_long nextbn;
|
|
off_t uoff, *cookies = NULL;
|
|
int ncookies = 0;
|
|
|
|
#ifdef ADOSFS_DIAGNOSTIC
|
|
advopprint(sp);
|
|
#endif
|
|
if (sp->a_vp->v_type != VDIR) {
|
|
error = ENOTDIR;
|
|
goto reterr;
|
|
}
|
|
|
|
uio = sp->a_uio;
|
|
uoff = uio->uio_offset;
|
|
if (uoff < 0) {
|
|
error = EINVAL;
|
|
goto reterr;
|
|
}
|
|
|
|
pap = VTOA(sp->a_vp);
|
|
amp = pap->amp;
|
|
adp = &ad;
|
|
error = nextbn = hashi = chainc = scanned = 0;
|
|
uavail = uio->uio_resid / sizeof(ad);
|
|
useri = uoff / sizeof(ad);
|
|
|
|
/*
|
|
* if no slots available or offset requested is not on a slot boundry
|
|
*/
|
|
if (uavail < 1 || uoff % sizeof(ad)) {
|
|
error = EINVAL;
|
|
goto reterr;
|
|
}
|
|
|
|
if (sp->a_ncookies) {
|
|
ncookies = 0;
|
|
cookies = malloc(sizeof (off_t) * uavail, M_TEMP, M_WAITOK);
|
|
*sp->a_cookies = cookies;
|
|
}
|
|
|
|
while (uavail) {
|
|
if (hashi == pap->ntabent) {
|
|
*sp->a_eofflag = 1;
|
|
break;
|
|
}
|
|
if (pap->tab[hashi] == 0) {
|
|
hashi++;
|
|
continue;
|
|
}
|
|
if (nextbn == 0)
|
|
nextbn = pap->tab[hashi];
|
|
|
|
/*
|
|
* first determine if we can skip this chain
|
|
*/
|
|
if (chainc == 0) {
|
|
int skip;
|
|
|
|
skip = useri - scanned;
|
|
if (pap->tabi[hashi] > 0 && pap->tabi[hashi] <= skip) {
|
|
scanned += pap->tabi[hashi];
|
|
hashi++;
|
|
nextbn = 0;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* now [continue to] walk the chain
|
|
*/
|
|
ap = NULL;
|
|
do {
|
|
error = VFS_VGET(amp->mp, (ino_t)nextbn, &vp);
|
|
if (error)
|
|
goto reterr;
|
|
ap = VTOA(vp);
|
|
scanned++;
|
|
chainc++;
|
|
nextbn = ap->hashf;
|
|
|
|
/*
|
|
* check for end of chain.
|
|
*/
|
|
if (nextbn == 0) {
|
|
pap->tabi[hashi] = chainc;
|
|
hashi++;
|
|
chainc = 0;
|
|
} else if (pap->tabi[hashi] <= 0 &&
|
|
-chainc < pap->tabi[hashi])
|
|
pap->tabi[hashi] = -chainc;
|
|
|
|
if (useri >= scanned) {
|
|
vput(vp);
|
|
ap = NULL;
|
|
}
|
|
} while (ap == NULL && nextbn != 0);
|
|
|
|
/*
|
|
* we left the loop but without a result so do main over.
|
|
*/
|
|
if (ap == NULL)
|
|
continue;
|
|
/*
|
|
* Fill in dirent record
|
|
*/
|
|
memset(adp, 0, sizeof(struct adirent));
|
|
adp->fileno = ap->block;
|
|
/*
|
|
* this deserves an function in kern/vfs_subr.c
|
|
*/
|
|
switch (ATOV(ap)->v_type) {
|
|
case VREG:
|
|
adp->type = DT_REG;
|
|
break;
|
|
case VDIR:
|
|
adp->type = DT_DIR;
|
|
break;
|
|
case VLNK:
|
|
adp->type = DT_LNK;
|
|
break;
|
|
default:
|
|
adp->type = DT_UNKNOWN;
|
|
break;
|
|
}
|
|
adp->reclen = sizeof(struct adirent);
|
|
adp->namlen = strlen(ap->name);
|
|
memcpy(adp->name, ap->name, adp->namlen);
|
|
vput(vp);
|
|
|
|
error = uiomove((caddr_t) adp, sizeof(struct adirent), uio);
|
|
if (error)
|
|
break;
|
|
if (sp->a_ncookies) {
|
|
*cookies++ = uoff;
|
|
ncookies++;
|
|
}
|
|
uoff += sizeof(struct adirent);
|
|
useri++;
|
|
uavail--;
|
|
}
|
|
#if doesnt_uiomove_handle_this
|
|
uio->uio_offset = uoff;
|
|
#endif
|
|
reterr:
|
|
#ifdef ADOSFS_DIAGNOSTIC
|
|
printf(" %d)", error);
|
|
#endif
|
|
if (sp->a_ncookies) {
|
|
if (error) {
|
|
free(*sp->a_cookies, M_TEMP);
|
|
*sp->a_ncookies = 0;
|
|
*sp->a_cookies = NULL;
|
|
} else
|
|
*sp->a_ncookies = ncookies;
|
|
}
|
|
return(error);
|
|
}
|
|
|
|
|
|
int
|
|
adosfs_access(v)
|
|
void *v;
|
|
{
|
|
struct vop_access_args /* {
|
|
struct vnode *a_vp;
|
|
int a_mode;
|
|
struct ucred *a_cred;
|
|
struct proc *a_p;
|
|
} */ *sp = v;
|
|
struct anode *ap;
|
|
struct vnode *vp = sp->a_vp;
|
|
int error;
|
|
|
|
#ifdef ADOSFS_DIAGNOSTIC
|
|
advopprint(sp);
|
|
#endif
|
|
|
|
ap = VTOA(vp);
|
|
#ifdef DIAGNOSTIC
|
|
if (!VOP_ISLOCKED(vp)) {
|
|
vprint("adosfs_access: not locked", sp->a_vp);
|
|
panic("adosfs_access: not locked");
|
|
}
|
|
#endif
|
|
/*
|
|
* Disallow write attempts unless the file is a socket,
|
|
* fifo, or a block or character device resident on the
|
|
* file system.
|
|
*/
|
|
if (sp->a_mode & VWRITE) {
|
|
switch (vp->v_type) {
|
|
case VDIR:
|
|
case VLNK:
|
|
case VREG:
|
|
return (EROFS);
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
#ifdef QUOTA
|
|
#endif
|
|
error = vaccess(sp->a_vp->v_type, adunixprot(ap->adprot) & ap->amp->mask,
|
|
ap->uid, ap->gid, sp->a_mode, sp->a_cred);
|
|
#ifdef ADOSFS_DIAGNOSTIC
|
|
printf(" %d)", error);
|
|
#endif
|
|
return(error);
|
|
}
|
|
|
|
int
|
|
adosfs_readlink(v)
|
|
void *v;
|
|
{
|
|
struct vop_readlink_args /* {
|
|
struct vnode *a_vp;
|
|
struct uio *a_uio;
|
|
struct ucred *a_cred;
|
|
} */ *sp = v;
|
|
struct anode *ap;
|
|
int error;
|
|
|
|
#ifdef ADOSFS_DIAGNOSTIC
|
|
advopprint(sp);
|
|
#endif
|
|
ap = VTOA(sp->a_vp);
|
|
error = uiomove(ap->slinkto, strlen(ap->slinkto), sp->a_uio);
|
|
#ifdef ADOSFS_DIAGNOSTIC
|
|
printf(" %d)", error);
|
|
#endif
|
|
return (error);
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
int
|
|
adosfs_inactive(v)
|
|
void *v;
|
|
{
|
|
struct vop_inactive_args /* {
|
|
struct vnode *a_vp;
|
|
struct proc *a_p;
|
|
} */ *sp = v;
|
|
struct vnode *vp = sp->a_vp;
|
|
struct proc *p = sp->a_p;
|
|
#ifdef ADOSFS_DIAGNOSTIC
|
|
advopprint(sp);
|
|
#endif
|
|
VOP_UNLOCK(vp, 0);
|
|
/* XXX this needs to check if file was deleted */
|
|
vrecycle(vp, (struct simplelock *)0, p);
|
|
|
|
#ifdef ADOSFS_DIAGNOSTIC
|
|
printf(" 0)");
|
|
#endif
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* the kernel wants its vnode back.
|
|
* no lock needed we are being called from vclean()
|
|
*/
|
|
int
|
|
adosfs_reclaim(v)
|
|
void *v;
|
|
{
|
|
struct vop_reclaim_args /* {
|
|
struct vnode *a_vp;
|
|
} */ *sp = v;
|
|
struct vnode *vp;
|
|
struct anode *ap;
|
|
|
|
#ifdef ADOSFS_DIAGNOSTIC
|
|
printf("(reclaim 0)");
|
|
#endif
|
|
vp = sp->a_vp;
|
|
ap = VTOA(vp);
|
|
LIST_REMOVE(ap, link);
|
|
cache_purge(vp);
|
|
if (vp->v_type == VDIR && ap->tab)
|
|
free(ap->tab, M_ANODE);
|
|
else if (vp->v_type == VLNK && ap->slinkto)
|
|
free(ap->slinkto, M_ANODE);
|
|
pool_put(&adosfs_node_pool, ap);
|
|
vp->v_data = NULL;
|
|
return(0);
|
|
}
|
|
|
|
|
|
/*
|
|
* POSIX pathconf info, grabbed from kern/u fs, probably need to
|
|
* investigate exactly what each return type means as they are probably
|
|
* not valid currently
|
|
*/
|
|
int
|
|
adosfs_pathconf(v)
|
|
void *v;
|
|
{
|
|
struct vop_pathconf_args /* {
|
|
struct vnode *a_vp;
|
|
int a_name;
|
|
register_t *a_retval;
|
|
} */ *sp = v;
|
|
|
|
switch (sp->a_name) {
|
|
case _PC_LINK_MAX:
|
|
*sp->a_retval = LINK_MAX;
|
|
return (0);
|
|
case _PC_MAX_CANON:
|
|
*sp->a_retval = MAX_CANON;
|
|
return (0);
|
|
case _PC_MAX_INPUT:
|
|
*sp->a_retval = MAX_INPUT;
|
|
return (0);
|
|
case _PC_PIPE_BUF:
|
|
*sp->a_retval = PIPE_BUF;
|
|
return (0);
|
|
case _PC_CHOWN_RESTRICTED:
|
|
*sp->a_retval = 1;
|
|
return (0);
|
|
case _PC_VDISABLE:
|
|
*sp->a_retval = _POSIX_VDISABLE;
|
|
return (0);
|
|
case _PC_SYNC_IO:
|
|
*sp->a_retval = 1;
|
|
return (0);
|
|
case _PC_FILESIZEBITS:
|
|
*sp->a_retval = 32;
|
|
return (0);
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
/* NOTREACHED */
|
|
}
|