From: Gao Xiang <hsiangkao@redhat.com>
To: linux-xfs@vger.kernel.org
Cc: "Darrick J. Wong" <darrick.wong@oracle.com>,
Eric Sandeen <sandeen@redhat.com>,
Dave Chinner <david@fromorbit.com>,
Gao Xiang <hsiangkao@redhat.com>
Subject: [PATCH v5 2/3] xfs: introduce xfs_validate_stripe_factors()
Date: Fri, 9 Oct 2020 13:24:20 +0800 [thread overview]
Message-ID: <20201009052421.3328-3-hsiangkao@redhat.com> (raw)
In-Reply-To: <20201009052421.3328-1-hsiangkao@redhat.com>
Introduce a common helper to consolidate stripe validation process.
Also make kernel code xfs_validate_sb_common() use it first.
Signed-off-by: Gao Xiang <hsiangkao@redhat.com>
---
libxfs/xfs_sb.c | 65 ++++++++++++++++++++++++++++++++++++++++---------
libxfs/xfs_sb.h | 3 +++
2 files changed, 57 insertions(+), 11 deletions(-)
diff --git a/libxfs/xfs_sb.c b/libxfs/xfs_sb.c
index 302eea16..0f2697ed 100644
--- a/libxfs/xfs_sb.c
+++ b/libxfs/xfs_sb.c
@@ -357,21 +357,18 @@ xfs_validate_sb_common(
}
}
- if (sbp->sb_unit) {
- if (!xfs_sb_version_hasdalign(sbp) ||
- sbp->sb_unit > sbp->sb_width ||
- (sbp->sb_width % sbp->sb_unit) != 0) {
- xfs_notice(mp, "SB stripe unit sanity check failed");
- return -EFSCORRUPTED;
- }
- } else if (xfs_sb_version_hasdalign(sbp)) {
+ /*
+ * Either (sb_unit and !hasdalign) or (!sb_unit and hasdalign)
+ * would imply the image is corrupted.
+ */
+ if (!sbp->sb_unit ^ !xfs_sb_version_hasdalign(sbp)) {
xfs_notice(mp, "SB stripe alignment sanity check failed");
return -EFSCORRUPTED;
- } else if (sbp->sb_width) {
- xfs_notice(mp, "SB stripe width sanity check failed");
- return -EFSCORRUPTED;
}
+ if (!xfs_validate_stripe_factors(mp, XFS_FSB_TO_B(mp, sbp->sb_unit),
+ XFS_FSB_TO_B(mp, sbp->sb_width), 0))
+ return -EFSCORRUPTED;
if (xfs_sb_version_hascrc(&mp->m_sb) &&
sbp->sb_blocksize < XFS_MIN_CRC_BLOCKSIZE) {
@@ -1208,3 +1205,49 @@ xfs_sb_get_secondary(
*bpp = bp;
return 0;
}
+
+/*
+ * sunit, swidth, sectorsize(optional with 0) should be all in bytes,
+ * so users won't be confused by values in error messages.
+ */
+bool
+xfs_validate_stripe_factors(
+ struct xfs_mount *mp,
+ __s64 sunit,
+ __s64 swidth,
+ int sectorsize)
+{
+ if (sectorsize && sunit % sectorsize) {
+ xfs_notice(mp,
+"stripe unit (%lld) must be a multiple of the sector size (%d)",
+ sunit, sectorsize);
+ return false;
+ }
+
+ if (sunit && !swidth) {
+ xfs_notice(mp,
+"invalid stripe unit (%lld) and stripe width of 0", sunit);
+ return false;
+ }
+
+ if (!sunit && swidth) {
+ xfs_notice(mp,
+"invalid stripe width (%lld) and stripe unit of 0", swidth);
+ return false;
+ }
+
+ if (sunit > swidth) {
+ xfs_notice(mp,
+"stripe unit (%lld) is larger than the stripe width (%lld)", sunit, swidth);
+ return false;
+ }
+
+ if (sunit && (swidth % sunit)) {
+ xfs_notice(mp,
+"stripe width (%lld) must be a multiple of the stripe unit (%lld)",
+ swidth, sunit);
+ return false;
+ }
+ return true;
+}
+
diff --git a/libxfs/xfs_sb.h b/libxfs/xfs_sb.h
index 92465a9a..2d3504eb 100644
--- a/libxfs/xfs_sb.h
+++ b/libxfs/xfs_sb.h
@@ -42,4 +42,7 @@ extern int xfs_sb_get_secondary(struct xfs_mount *mp,
struct xfs_trans *tp, xfs_agnumber_t agno,
struct xfs_buf **bpp);
+extern bool xfs_validate_stripe_factors(struct xfs_mount *mp,
+ __s64 sunit, __s64 swidth, int sectorsize);
+
#endif /* __XFS_SB_H__ */
--
2.18.1
next prev parent reply other threads:[~2020-10-09 5:25 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-09 5:24 [PATCH v5 0/3] xfsprogs: consolidate stripe validation Gao Xiang
2020-10-09 5:24 ` [PATCH v5 1/3] libxfs: allow i18n to xfs printk Gao Xiang
2020-10-09 5:24 ` Gao Xiang [this message]
2020-10-09 5:24 ` [PATCH v5 3/3] mkfs: make use of xfs_validate_stripe_factors() Gao Xiang
2020-10-12 13:06 ` Brian Foster
2020-10-12 14:07 ` Gao Xiang
2020-10-12 14:20 ` Brian Foster
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