From e81cc68312e91ab7086188542f3377605bf144a8 Mon Sep 17 00:00:00 2001

From: Andrey Albershteyn <aalbersh@redhat.com>

Date: Mon, 25 Apr 2022 17:08:38 +0200

Subject: libblkid: implement FSSIZE calculation for XFS

The implementation is similar to one provided by statfs(2) + lsblk.

Upstream: http://github.com/util-linux/util-linux/commit/d7ec8fe8e

Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=2064810

Signed-off-by: Andrey Albershteyn <aalbersh@redhat.com>

---

 libblkid/src/superblocks/xfs.c | 10 ++++++++++

 1 file changed, 10 insertions(+)

diff --git a/libblkid/src/superblocks/xfs.c b/libblkid/src/superblocks/xfs.c

index d8c6fb6d4..444050f55 100644

--- a/libblkid/src/superblocks/xfs.c

+++ b/libblkid/src/superblocks/xfs.c

@@ -158,6 +158,15 @@ static int xfs_verify_sb(struct xfs_super_block *ondisk)

 	return 1;

 }

+static uint64_t xfs_fssize(struct xfs_super_block *xs)

+{

+	uint32_t lsize = xs->sb_logstart ? xs->sb_logblocks : 0;

+	uint64_t avail_blocks = be64_to_cpu(xs->sb_dblocks) - be32_to_cpu(lsize);

+	uint64_t fssize = avail_blocks*be32_to_cpu(xs->sb_blocksize);

+

+	return fssize;

+}

+

 static int probe_xfs(blkid_probe pr, const struct blkid_idmag *mag)

 {

 	struct xfs_super_block *xs;

@@ -173,6 +182,7 @@ static int probe_xfs(blkid_probe pr, const struct blkid_idmag *mag)

 		blkid_probe_set_label(pr, (unsigned char *) xs->sb_fname,

 				sizeof(xs->sb_fname));

 	blkid_probe_set_uuid(pr, xs->sb_uuid);

+	blkid_probe_set_fssize(pr, xfs_fssize(xs));

 	blkid_probe_set_block_size(pr, be16_to_cpu(xs->sb_sectsize));

 	return 0;

 }

-- 

2.36.1