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From 9c7f3317fc66fe971a331dd71e76aff7ae091ab2 Mon Sep 17 00:00:00 2001
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From: Andrey Albershteyn <aalbersh@redhat.com>
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Date: Wed, 27 Apr 2022 14:46:33 +0200
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Subject: libblkid: add FSLASTBLOCK implementation for xfs, ext and btrfs
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Implementation of FSLASTBLOCK for most common filesystems. Most of
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the fs store total number of reserved blocks in superblock.
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Upstream: http://github.com/util-linux/util-linux/commit/5f995b3f1
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Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=2064810
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Signed-off-by: Andrey Albershteyn <aalbersh@redhat.com>
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---
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libblkid/src/superblocks/btrfs.c | 5 +++++
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libblkid/src/superblocks/ext.c | 10 ++++++++--
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libblkid/src/superblocks/xfs.c | 1 +
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3 files changed, 14 insertions(+), 2 deletions(-)
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diff --git a/libblkid/src/superblocks/btrfs.c b/libblkid/src/superblocks/btrfs.c
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index f0fde700d..9708f2e28 100644
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--- a/libblkid/src/superblocks/btrfs.c
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+++ b/libblkid/src/superblocks/btrfs.c
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@@ -76,6 +76,11 @@ static int probe_btrfs(blkid_probe pr, const struct blkid_idmag *mag)
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blkid_probe_set_uuid_as(pr, bfs->dev_item.uuid, "UUID_SUB");
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blkid_probe_set_block_size(pr, le32_to_cpu(bfs->sectorsize));
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+ uint32_t sectorsize_log = 31 -
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+ __builtin_clz(le32_to_cpu(bfs->sectorsize));
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+ blkid_probe_set_fslastblock(pr,
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+ le64_to_cpu(bfs->total_bytes) >> sectorsize_log);
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+
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return 0;
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}
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diff --git a/libblkid/src/superblocks/ext.c b/libblkid/src/superblocks/ext.c
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index 3870522fa..0b9023734 100644
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--- a/libblkid/src/superblocks/ext.c
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+++ b/libblkid/src/superblocks/ext.c
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@@ -164,10 +164,11 @@ static struct ext2_super_block *ext_get_super(
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static void ext_get_info(blkid_probe pr, int ver, struct ext2_super_block *es)
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{
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struct blkid_chain *chn = blkid_probe_get_chain(pr);
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+ uint32_t s_feature_incompat = le32_to_cpu(es->s_feature_incompat);
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DBG(PROBE, ul_debug("ext2_sb.compat = %08X:%08X:%08X",
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le32_to_cpu(es->s_feature_compat),
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- le32_to_cpu(es->s_feature_incompat),
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+ s_feature_incompat,
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le32_to_cpu(es->s_feature_ro_compat)));
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if (*es->s_volume_name != '\0')
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@@ -179,7 +180,7 @@ static void ext_get_info(blkid_probe pr, int ver, struct ext2_super_block *es)
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blkid_probe_set_uuid_as(pr, es->s_journal_uuid, "EXT_JOURNAL");
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if (ver != 2 && (chn->flags & BLKID_SUBLKS_SECTYPE) &&
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- ((le32_to_cpu(es->s_feature_incompat) & EXT2_FEATURE_INCOMPAT_UNSUPPORTED) == 0))
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+ ((s_feature_incompat & EXT2_FEATURE_INCOMPAT_UNSUPPORTED) == 0))
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blkid_probe_set_value(pr, "SEC_TYPE",
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(unsigned char *) "ext2",
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sizeof("ext2"));
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@@ -190,6 +191,11 @@ static void ext_get_info(blkid_probe pr, int ver, struct ext2_super_block *es)
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if (le32_to_cpu(es->s_log_block_size) < 32)
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blkid_probe_set_block_size(pr, 1024U << le32_to_cpu(es->s_log_block_size));
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+
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+ uint64_t fslastblock = le32_to_cpu(es->s_blocks_count) |
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+ ((s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT) ?
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+ (uint64_t) le32_to_cpu(es->s_blocks_count_hi) << 32 : 0);
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+ blkid_probe_set_fslastblock(pr, fslastblock);
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}
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diff --git a/libblkid/src/superblocks/xfs.c b/libblkid/src/superblocks/xfs.c
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index 444050f55..1f2e92cac 100644
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--- a/libblkid/src/superblocks/xfs.c
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+++ b/libblkid/src/superblocks/xfs.c
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@@ -183,6 +183,7 @@ static int probe_xfs(blkid_probe pr, const struct blkid_idmag *mag)
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sizeof(xs->sb_fname));
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blkid_probe_set_uuid(pr, xs->sb_uuid);
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blkid_probe_set_fssize(pr, xfs_fssize(xs));
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+ blkid_probe_set_fslastblock(pr, be64_to_cpu(xs->sb_dblocks));
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blkid_probe_set_block_size(pr, be16_to_cpu(xs->sb_sectsize));
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return 0;
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}
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--
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2.36.1
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