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https://github.com/brain-hackers/linux-brain.git
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0b61f8a407
Remove the verbose license text from XFS files and replace them
with SPDX tags. This does not change the license of any of the code,
merely refers to the common, up-to-date license files in LICENSES/
This change was mostly scripted. fs/xfs/Makefile and
fs/xfs/libxfs/xfs_fs.h were modified by hand, the rest were detected
and modified by the following command:
for f in `git grep -l "GNU General" fs/xfs/` ; do
echo $f
cat $f | awk -f hdr.awk > $f.new
mv -f $f.new $f
done
And the hdr.awk script that did the modification (including
detecting the difference between GPL-2.0 and GPL-2.0+ licenses)
is as follows:
$ cat hdr.awk
BEGIN {
hdr = 1.0
tag = "GPL-2.0"
str = ""
}
/^ \* This program is free software/ {
hdr = 2.0;
next
}
/any later version./ {
tag = "GPL-2.0+"
next
}
/^ \*\// {
if (hdr > 0.0) {
print "// SPDX-License-Identifier: " tag
print str
print $0
str=""
hdr = 0.0
next
}
print $0
next
}
/^ \* / {
if (hdr > 1.0)
next
if (hdr > 0.0) {
if (str != "")
str = str "\n"
str = str $0
next
}
print $0
next
}
/^ \*/ {
if (hdr > 0.0)
next
print $0
next
}
// {
if (hdr > 0.0) {
if (str != "")
str = str "\n"
str = str $0
next
}
print $0
}
END { }
$
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
170 lines
3.9 KiB
C
170 lines
3.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017 Oracle. All Rights Reserved.
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* Author: Darrick J. Wong <darrick.wong@oracle.com>
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*/
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#include "xfs.h"
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#include "xfs_fs.h"
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#include "xfs_shared.h"
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#include "xfs_format.h"
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#include "xfs_trans_resv.h"
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#include "xfs_mount.h"
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#include "xfs_defer.h"
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#include "xfs_btree.h"
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#include "xfs_bit.h"
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#include "xfs_log_format.h"
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#include "xfs_trans.h"
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#include "xfs_sb.h"
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#include "xfs_alloc.h"
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#include "xfs_rmap.h"
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#include "xfs_alloc.h"
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#include "scrub/xfs_scrub.h"
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#include "scrub/scrub.h"
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#include "scrub/common.h"
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#include "scrub/btree.h"
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#include "scrub/trace.h"
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/*
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* Set us up to scrub free space btrees.
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*/
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int
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xfs_scrub_setup_ag_allocbt(
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struct xfs_scrub_context *sc,
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struct xfs_inode *ip)
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{
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return xfs_scrub_setup_ag_btree(sc, ip, false);
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}
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/* Free space btree scrubber. */
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/*
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* Ensure there's a corresponding cntbt/bnobt record matching this
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* bnobt/cntbt record, respectively.
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*/
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STATIC void
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xfs_scrub_allocbt_xref_other(
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struct xfs_scrub_context *sc,
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xfs_agblock_t agbno,
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xfs_extlen_t len)
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{
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struct xfs_btree_cur **pcur;
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xfs_agblock_t fbno;
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xfs_extlen_t flen;
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int has_otherrec;
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int error;
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if (sc->sm->sm_type == XFS_SCRUB_TYPE_BNOBT)
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pcur = &sc->sa.cnt_cur;
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else
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pcur = &sc->sa.bno_cur;
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if (!*pcur || xfs_scrub_skip_xref(sc->sm))
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return;
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error = xfs_alloc_lookup_le(*pcur, agbno, len, &has_otherrec);
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if (!xfs_scrub_should_check_xref(sc, &error, pcur))
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return;
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if (!has_otherrec) {
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xfs_scrub_btree_xref_set_corrupt(sc, *pcur, 0);
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return;
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}
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error = xfs_alloc_get_rec(*pcur, &fbno, &flen, &has_otherrec);
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if (!xfs_scrub_should_check_xref(sc, &error, pcur))
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return;
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if (!has_otherrec) {
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xfs_scrub_btree_xref_set_corrupt(sc, *pcur, 0);
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return;
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}
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if (fbno != agbno || flen != len)
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xfs_scrub_btree_xref_set_corrupt(sc, *pcur, 0);
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}
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/* Cross-reference with the other btrees. */
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STATIC void
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xfs_scrub_allocbt_xref(
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struct xfs_scrub_context *sc,
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xfs_agblock_t agbno,
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xfs_extlen_t len)
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{
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if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
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return;
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xfs_scrub_allocbt_xref_other(sc, agbno, len);
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xfs_scrub_xref_is_not_inode_chunk(sc, agbno, len);
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xfs_scrub_xref_has_no_owner(sc, agbno, len);
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xfs_scrub_xref_is_not_shared(sc, agbno, len);
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}
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/* Scrub a bnobt/cntbt record. */
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STATIC int
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xfs_scrub_allocbt_rec(
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struct xfs_scrub_btree *bs,
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union xfs_btree_rec *rec)
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{
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struct xfs_mount *mp = bs->cur->bc_mp;
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xfs_agnumber_t agno = bs->cur->bc_private.a.agno;
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xfs_agblock_t bno;
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xfs_extlen_t len;
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int error = 0;
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bno = be32_to_cpu(rec->alloc.ar_startblock);
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len = be32_to_cpu(rec->alloc.ar_blockcount);
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if (bno + len <= bno ||
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!xfs_verify_agbno(mp, agno, bno) ||
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!xfs_verify_agbno(mp, agno, bno + len - 1))
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xfs_scrub_btree_set_corrupt(bs->sc, bs->cur, 0);
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xfs_scrub_allocbt_xref(bs->sc, bno, len);
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return error;
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}
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/* Scrub the freespace btrees for some AG. */
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STATIC int
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xfs_scrub_allocbt(
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struct xfs_scrub_context *sc,
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xfs_btnum_t which)
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{
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struct xfs_owner_info oinfo;
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struct xfs_btree_cur *cur;
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xfs_rmap_ag_owner(&oinfo, XFS_RMAP_OWN_AG);
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cur = which == XFS_BTNUM_BNO ? sc->sa.bno_cur : sc->sa.cnt_cur;
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return xfs_scrub_btree(sc, cur, xfs_scrub_allocbt_rec, &oinfo, NULL);
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}
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int
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xfs_scrub_bnobt(
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struct xfs_scrub_context *sc)
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{
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return xfs_scrub_allocbt(sc, XFS_BTNUM_BNO);
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}
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int
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xfs_scrub_cntbt(
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struct xfs_scrub_context *sc)
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{
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return xfs_scrub_allocbt(sc, XFS_BTNUM_CNT);
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}
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/* xref check that the extent is not free */
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void
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xfs_scrub_xref_is_used_space(
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struct xfs_scrub_context *sc,
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xfs_agblock_t agbno,
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xfs_extlen_t len)
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{
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bool is_freesp;
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int error;
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if (!sc->sa.bno_cur || xfs_scrub_skip_xref(sc->sm))
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return;
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error = xfs_alloc_has_record(sc->sa.bno_cur, agbno, len, &is_freesp);
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if (!xfs_scrub_should_check_xref(sc, &error, &sc->sa.bno_cur))
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return;
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if (is_freesp)
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xfs_scrub_btree_xref_set_corrupt(sc, sc->sa.bno_cur, 0);
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}
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