554 lines
14 KiB
C
554 lines
14 KiB
C
/* $NetBSD: quota2.c,v 1.8 2023/07/04 20:40:53 riastradh Exp $ */
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/*-
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* Copyright (c) 2010 Manuel Bouyer
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/time.h>
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#include <ufs/ufs/dinode.h>
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#include <ufs/ffs/fs.h>
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#include <ufs/ffs/ffs_extern.h>
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#include <ufs/ufs/ufs_bswap.h>
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#include <err.h>
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#include <string.h>
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#include <stdlib.h>
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#include <ufs/ufs/quota2.h>
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#include "fsutil.h"
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#include "fsck.h"
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#include "extern.h"
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#include "exitvalues.h"
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static char **quotamap;
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void
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quota2_create_inode(struct fs *fs, int type)
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{
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ino_t ino;
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struct bufarea *bp;
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union dinode *dp;
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ino = allocino(0, IFREG);
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dp = ginode(ino);
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DIP_SET(dp, nlink, iswap16(1));
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inodirty();
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if (readblk(dp, 0, &bp) != sblock->fs_bsize ||
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bp->b_errs != 0) {
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freeino(ino);
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return;
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}
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quota2_create_blk0(sblock->fs_bsize, bp->b_un.b_buf,
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q2h_hash_shift, type, needswap);
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dirty(bp);
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bp->b_flags &= ~B_INUSE;
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sblock->fs_quotafile[type] = ino;
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sbdirty();
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return;
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}
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int
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quota2_alloc_quota(union dinode * dp, struct bufarea *hbp,
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uid_t uid, uint64_t u_b, uint64_t u_i)
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{
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struct bufarea *bp;
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struct quota2_header *q2h = (void *)hbp->b_un.b_buf;
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struct quota2_entry *q2e;
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uint64_t off;
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uint64_t baseoff;
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off = iswap64(q2h->q2h_free);
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if (off == 0) {
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baseoff = iswap64(DIP(dp, size));
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if ((bp = expandfile(dp)) == NULL) {
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pfatal("SORRY, CAN'T EXPAND QUOTA INODE\n");
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markclean = 0;
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return (0);
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}
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quota2_addfreeq2e(q2h, bp->b_un.b_buf, baseoff,
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sblock->fs_bsize, needswap);
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dirty(bp);
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bp->b_flags &= ~B_INUSE;
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off = iswap64(q2h->q2h_free);
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if (off == 0)
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errexit("INTERNAL ERROR: "
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"addfreeq2e didn't fill free list\n");
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}
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if (off < (uint64_t)sblock->fs_bsize) {
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/* in the header block */
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bp = hbp;
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} else {
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if (readblk(dp, off, &bp) != sblock->fs_bsize ||
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bp->b_errs != 0) {
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pwarn("CAN'T READ QUOTA BLOCK\n");
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return FSCK_EXIT_CHECK_FAILED;
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}
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}
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q2e = (void *)((caddr_t)(bp->b_un.b_buf) +
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(off % sblock->fs_bsize));
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/* remove from free list */
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q2h->q2h_free = q2e->q2e_next;
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memcpy(q2e, &q2h->q2h_defentry, sizeof(*q2e));
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q2e->q2e_uid = iswap32(uid);
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q2e->q2e_val[QL_BLOCK].q2v_cur = iswap64(u_b);
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q2e->q2e_val[QL_FILE].q2v_cur = iswap64(u_i);
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/* insert in hash list */
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q2e->q2e_next = q2h->q2h_entries[uid & q2h_hash_mask];
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q2h->q2h_entries[uid & q2h_hash_mask] = iswap64(off);
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dirty(bp);
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dirty(hbp);
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if (bp != hbp)
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bp->b_flags &= ~B_INUSE;
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return 0;
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}
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/* walk a quota entry list, calling the callback for each entry */
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static int quota2_walk_list(union dinode *, struct bufarea *, uint64_t *,
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void *, int (*func)(uint64_t *, struct quota2_entry *, uint64_t, void *));
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/* flags used by callbacks return */
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#define Q2WL_ABORT 0x01
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#define Q2WL_DIRTY 0x02
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static int
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quota2_walk_list(union dinode *dp, struct bufarea *hbp, uint64_t *offp, void *a,
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int (*func)(uint64_t *, struct quota2_entry *, uint64_t, void *))
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{
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daddr_t off = iswap64(*offp);
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struct bufarea *bp, *obp = hbp;
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int ret;
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struct quota2_entry *q2e;
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while (off != 0) {
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if (off < sblock->fs_bsize) {
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/* in the header block */
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bp = hbp;
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} else {
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if (readblk(dp, off, &bp) != sblock->fs_bsize ||
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bp->b_errs != 0) {
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pwarn("CAN'T READ QUOTA BLOCK");
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return FSCK_EXIT_CHECK_FAILED;
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}
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}
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q2e = (void *)((caddr_t)(bp->b_un.b_buf) +
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(off % sblock->fs_bsize));
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ret = (*func)(offp, q2e, off, a);
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if (ret & Q2WL_DIRTY)
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dirty(bp);
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if (ret & Q2WL_ABORT)
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return FSCK_EXIT_CHECK_FAILED;
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if ((uint64_t)off != iswap64(*offp)) {
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/* callback changed parent's pointer, redo */
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dirty(obp);
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off = iswap64(*offp);
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if (bp != hbp && bp != obp)
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bp->b_flags &= ~B_INUSE;
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} else {
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/* parent if now current */
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if (obp != bp && obp != hbp)
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obp->b_flags &= ~B_INUSE;
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obp = bp;
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offp = &(q2e->q2e_next);
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off = iswap64(*offp);
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}
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}
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if (obp != hbp)
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obp->b_flags &= ~B_INUSE;
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return 0;
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}
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static int quota2_list_check(uint64_t *, struct quota2_entry *, uint64_t,
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void *);
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static int
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quota2_list_check(uint64_t *offp, struct quota2_entry *q2e, uint64_t off,
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void *v)
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{
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int *hash = v;
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const int quota2_hash_size = 1 << q2h_hash_shift;
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const int quota2_full_header_size = sizeof(struct quota2_header) +
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sizeof(uint64_t) * quota2_hash_size;
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uint64_t blk = off / sblock->fs_bsize;
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uint64_t boff = off % sblock->fs_bsize;
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int qidx = off2qindex((blk == 0) ? quota2_full_header_size : 0, boff);
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/* check that we're not already in a list */
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if (!isset(quotamap[blk], qidx)) {
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pwarn("DUPLICATE QUOTA ENTRY");
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} else {
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clrbit(quotamap[blk], qidx);
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/* check that we're in the right hash entry */
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if (*hash < 0)
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return 0;
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if ((uint32_t)*hash == (iswap32(q2e->q2e_uid) & q2h_hash_mask))
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return 0;
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pwarn("QUOTA uid %d IN WRONG HASH LIST %d",
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iswap32(q2e->q2e_uid), *hash);
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/*
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* remove from list, but keep the bit so
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* it'll be added back to the free list
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*/
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setbit(quotamap[blk], qidx);
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}
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if (preen)
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printf(" (FIXED)\n");
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else if (!reply("FIX")) {
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markclean = 0;
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return 0;
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}
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/* remove this entry from the list */
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*offp = q2e->q2e_next;
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q2e->q2e_next = 0;
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return Q2WL_DIRTY;
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}
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int
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quota2_check_inode(int type)
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{
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const char *strtype = (type == USRQUOTA) ? "user" : "group";
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const char *capstrtype = (type == USRQUOTA) ? "USER" : "GROUP";
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struct bufarea *bp, *hbp;
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union dinode *dp;
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struct quota2_header *q2h;
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struct quota2_entry *q2e;
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int freei = 0;
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int mode;
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daddr_t off;
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int nq2e, nq2map, i, j, ret;
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uint64_t /* blocks, e_blocks, */ filesize;
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const int quota2_hash_size = 1 << q2h_hash_shift;
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const int quota2_full_header_size = sizeof(struct quota2_header) +
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sizeof(q2h->q2h_entries[0]) * quota2_hash_size;
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if ((sblock->fs_quota_flags & FS_Q2_DO_TYPE(type)) == 0)
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return 0;
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if (sblock->fs_quotafile[type] != 0) {
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struct inostat *info;
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info = inoinfo(sblock->fs_quotafile[type]);
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switch(info->ino_state) {
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case FSTATE:
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break;
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case DSTATE:
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freei = 1;
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/* FALLTHROUGH */
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case DFOUND:
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pwarn("%s QUOTA INODE %" PRIu64 " IS A DIRECTORY",
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capstrtype, sblock->fs_quotafile[type]);
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goto clear;
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case USTATE:
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case DCLEAR:
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case FCLEAR:
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pwarn("UNALLOCATED %s QUOTA INODE %" PRIu64,
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capstrtype, sblock->fs_quotafile[type]);
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goto clear;
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default:
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pfatal("INTERNAL ERROR: wrong quota inode %" PRIu64
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" type %d\n", sblock->fs_quotafile[type],
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info->ino_state);
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exit(FSCK_EXIT_CHECK_FAILED);
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}
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dp = ginode(sblock->fs_quotafile[type]);
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mode = iswap16(DIP(dp, mode)) & IFMT;
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switch(mode) {
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case IFREG:
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break;
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default:
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pwarn("WRONG TYPE %d for %s QUOTA INODE %" PRIu64,
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mode, capstrtype, sblock->fs_quotafile[type]);
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freei = 1;
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goto clear;
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}
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#if 0
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blocks = is_ufs2 ? iswap64(dp->dp2.di_blocks) :
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iswap32(dp->dp1.di_blocks);
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filesize = iswap64(DIP(dp, size));
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e_blocks = btodb(filesize);
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if (btodb(filesize) != blocks) {
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pwarn("%s QUOTA INODE %" PRIu64 " HAS EMPTY BLOCKS",
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capstrtype, sblock->fs_quotafile[type]);
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freei = 1;
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goto clear;
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}
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#endif
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if (readblk(dp, 0, &hbp) != sblock->fs_bsize ||
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hbp->b_errs != 0) {
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freeino(sblock->fs_quotafile[type]);
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sblock->fs_quotafile[type] = 0;
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goto alloc;
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}
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q2h = (void *)hbp->b_un.b_buf;
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if (q2h->q2h_magic_number != iswap32(Q2_HEAD_MAGIC) ||
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q2h->q2h_type != type ||
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q2h->q2h_hash_shift != q2h_hash_shift ||
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q2h->q2h_hash_size != iswap16(quota2_hash_size)) {
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pwarn("CORRUPTED %s QUOTA INODE %" PRIu64, capstrtype,
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sblock->fs_quotafile[type]);
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freei = 1;
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hbp->b_flags &= ~B_INUSE;
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clear:
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if (preen)
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printf(" (CLEARED)\n");
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else {
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if (!reply("CLEAR")) {
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markclean = 0;
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return FSCK_EXIT_CHECK_FAILED;
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}
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}
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if (freei)
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freeino(sblock->fs_quotafile[type]);
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sblock->fs_quotafile[type] = 0;
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}
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}
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alloc:
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if (sblock->fs_quotafile[type] == 0) {
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pwarn("NO %s QUOTA INODE", capstrtype);
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if (preen)
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printf(" (CREATED)\n");
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else {
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if (!reply("CREATE")) {
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markclean = 0;
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return FSCK_EXIT_CHECK_FAILED;
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}
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}
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quota2_create_inode(sblock, type);
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}
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dp = ginode(sblock->fs_quotafile[type]);
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if (readblk(dp, 0, &hbp) != sblock->fs_bsize ||
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hbp->b_errs != 0) {
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pfatal("can't re-read %s quota header\n", strtype);
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exit(FSCK_EXIT_CHECK_FAILED);
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}
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q2h = (void *)hbp->b_un.b_buf;
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filesize = iswap64(DIP(dp, size));
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nq2map = filesize / sblock->fs_bsize;
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quotamap = malloc(sizeof(*quotamap) * nq2map);
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/* map for full blocks */
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for (i = 0; i < nq2map; i++) {
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nq2e = (sblock->fs_bsize -
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((i == 0) ? quota2_full_header_size : 0)) / sizeof(*q2e);
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quotamap[i] = calloc(roundup(howmany(nq2e, NBBY),
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sizeof(int16_t)), sizeof(char));
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for (j = 0; j < nq2e; j++)
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setbit(quotamap[i], j);
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}
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/* check that all entries are in the lists (and only once) */
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i = -1;
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ret = quota2_walk_list(dp, hbp, &q2h->q2h_free, &i, quota2_list_check);
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if (ret)
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return ret;
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for (i = 0; i < quota2_hash_size; i++) {
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ret = quota2_walk_list(dp, hbp, &q2h->q2h_entries[i], &i,
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quota2_list_check);
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if (ret)
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return ret;
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}
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for (i = 0; i < nq2map; i++) {
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nq2e = (sblock->fs_bsize -
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((i == 0) ? quota2_full_header_size : 0)) / sizeof(*q2e);
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for (j = 0; j < nq2e; j++) {
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if (!isset(quotamap[i], j))
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continue;
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pwarn("QUOTA ENTRY NOT IN LIST");
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if (preen)
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printf(" (FIXED)\n");
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else if (!reply("FIX")) {
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markclean = 0;
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break;
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}
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off = qindex2off(
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(i == 0) ? quota2_full_header_size : 0, j);
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if (i == 0)
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bp = hbp;
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else {
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if (readblk(dp, i * sblock->fs_bsize, &bp)
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!= sblock->fs_bsize || bp->b_errs != 0) {
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pfatal("can't read %s quota entry\n",
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strtype);
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break;
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}
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}
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q2e = (void *)((caddr_t)(bp->b_un.b_buf) + off);
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q2e->q2e_next = q2h->q2h_free;
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q2h->q2h_free = iswap64(off + i * sblock->fs_bsize);
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dirty(bp);
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dirty(hbp);
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if (bp != hbp)
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bp->b_flags &= ~B_INUSE;
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}
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}
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hbp->b_flags &= ~B_INUSE;
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return 0;
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}
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/* compare/update on-disk usages to what we computed */
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struct qcheck_arg {
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const char *capstrtype;
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struct uquot_hash *uquot_hash;
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};
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static int quota2_list_qcheck(uint64_t *, struct quota2_entry *, uint64_t,
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void *);
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static int
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quota2_list_qcheck(uint64_t *offp, struct quota2_entry *q2e, uint64_t off,
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void *v)
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{
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uid_t uid = iswap32(q2e->q2e_uid);
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struct qcheck_arg *a = v;
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struct uquot *uq;
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struct uquot uq_null;
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memset(&uq_null, 0, sizeof(uq_null));
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uq = find_uquot(a->uquot_hash, uid, 0);
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if (uq == NULL)
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uq = &uq_null;
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else
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remove_uquot(a->uquot_hash, uq);
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if (iswap64(q2e->q2e_val[QL_BLOCK].q2v_cur) == uq->uq_b &&
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iswap64(q2e->q2e_val[QL_FILE].q2v_cur) == uq->uq_i)
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return 0;
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pwarn("%s QUOTA MISMATCH FOR ID %d: %" PRIu64 "/%" PRIu64 " SHOULD BE "
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"%" PRIu64 "/%" PRIu64, a->capstrtype, uid,
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iswap64(q2e->q2e_val[QL_BLOCK].q2v_cur),
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iswap64(q2e->q2e_val[QL_FILE].q2v_cur), uq->uq_b, uq->uq_i);
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if (preen) {
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printf(" (FIXED)\n");
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} else if (!reply("FIX")) {
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markclean = 0;
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return 0;
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}
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q2e->q2e_val[QL_BLOCK].q2v_cur = iswap64(uq->uq_b);
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q2e->q2e_val[QL_FILE].q2v_cur = iswap64(uq->uq_i);
|
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return Q2WL_DIRTY;
|
|
}
|
|
|
|
int
|
|
quota2_check_usage(int type)
|
|
{
|
|
const char *strtype = (type == USRQUOTA) ? "user" : "group";
|
|
const char *capstrtype = (type == USRQUOTA) ? "USER" : "GROUP";
|
|
|
|
struct bufarea *hbp;
|
|
union dinode *dp;
|
|
struct quota2_header *q2h;
|
|
struct qcheck_arg a;
|
|
int i, ret;
|
|
const int quota2_hash_size = 1 << q2h_hash_shift;
|
|
|
|
if ((sblock->fs_quota_flags & FS_Q2_DO_TYPE(type)) == 0)
|
|
return 0;
|
|
|
|
a.capstrtype = capstrtype;
|
|
a.uquot_hash =
|
|
(type == USRQUOTA) ? uquot_user_hash : uquot_group_hash;
|
|
dp = ginode(sblock->fs_quotafile[type]);
|
|
if (readblk(dp, 0, &hbp) != sblock->fs_bsize ||
|
|
hbp->b_errs != 0) {
|
|
pfatal("can't re-read %s quota header\n", strtype);
|
|
exit(FSCK_EXIT_CHECK_FAILED);
|
|
}
|
|
q2h = (void *)hbp->b_un.b_buf;
|
|
for (i = 0; i < quota2_hash_size; i++) {
|
|
ret = quota2_walk_list(dp, hbp, &q2h->q2h_entries[i], &a,
|
|
quota2_list_qcheck);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
for (i = 0; i < quota2_hash_size; i++) {
|
|
struct uquot *uq;
|
|
SLIST_FOREACH(uq, &a.uquot_hash[i], uq_entries) {
|
|
pwarn("%s QUOTA MISMATCH FOR ID %d: 0/0"
|
|
" SHOULD BE %" PRIu64 "/%" PRIu64, capstrtype,
|
|
uq->uq_uid, uq->uq_b, uq->uq_i);
|
|
if (preen) {
|
|
printf(" (ALLOCATED)\n");
|
|
} else if (!reply("ALLOC")) {
|
|
markclean = 0;
|
|
return 0;
|
|
}
|
|
ret = quota2_alloc_quota(dp, hbp,
|
|
uq->uq_uid, uq->uq_b, uq->uq_i);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
}
|
|
hbp->b_flags &= ~B_INUSE;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* check if a quota check needs to be run, regardless of the clean flag
|
|
*/
|
|
int
|
|
quota2_check_doquota(void)
|
|
{
|
|
int retval = 1;
|
|
|
|
if ((sblock->fs_flags & FS_DOQUOTA2) == 0)
|
|
return 1;
|
|
if (sblock->fs_quota_magic != Q2_HEAD_MAGIC) {
|
|
pfatal("Invalid quota magic number\n");
|
|
if (preen)
|
|
return 0;
|
|
if (reply("CONTINUE") == 0) {
|
|
exit(FSCK_EXIT_CHECK_FAILED);
|
|
}
|
|
return 0;
|
|
}
|
|
if ((sblock->fs_quota_flags & FS_Q2_DO_TYPE(USRQUOTA)) &&
|
|
sblock->fs_quotafile[USRQUOTA] == 0) {
|
|
pwarn("no user quota inode\n");
|
|
retval = 0;
|
|
}
|
|
if ((sblock->fs_quota_flags & FS_Q2_DO_TYPE(GRPQUOTA)) &&
|
|
sblock->fs_quotafile[GRPQUOTA] == 0) {
|
|
pwarn("no group quota inode\n");
|
|
retval = 0;
|
|
}
|
|
if (preen)
|
|
return retval;
|
|
if (!retval) {
|
|
if (reply("CONTINUE") == 0) {
|
|
exit(FSCK_EXIT_CHECK_FAILED);
|
|
}
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|