[prev in list] [next in list] [prev in thread] [next in thread]
List: util-linux-ng
Subject: [PATCH 2/4] libblkid: add FSLASTBLOCK implementation for xfs, ext and btrfs
From: Andrey Albershteyn <aalbersh () redhat ! com>
Date: 2022-04-27 17:05:12
Message-ID: 20220427170514.317720-3-aalbersh () redhat ! com
[Download RAW message or body]
Implementation of FSLASTBLOCK for most common filesystems. Most of
the fs store total number of reserved blocks in superblock.
Signed-off-by: Andrey Albershteyn <aalbersh@redhat.com>
---
libblkid/src/superblocks/btrfs.c | 5 +++++
libblkid/src/superblocks/ext.c | 5 +++++
libblkid/src/superblocks/xfs.c | 1 +
3 files changed, 11 insertions(+)
diff --git a/libblkid/src/superblocks/btrfs.c b/libblkid/src/superblocks/btrfs.c
index 78d767d26..0ead1f591 100644
--- a/libblkid/src/superblocks/btrfs.c
+++ b/libblkid/src/superblocks/btrfs.c
@@ -236,6 +236,11 @@ static int probe_btrfs(blkid_probe pr, const struct blkid_idmag *mag)
blkid_probe_set_uuid_as(pr, bfs->dev_item.uuid, "UUID_SUB");
blkid_probe_set_block_size(pr, le32_to_cpu(bfs->sectorsize));
+ uint32_t sectorsize_log = 31 -
+ __builtin_clz(le32_to_cpu(bfs->sectorsize));
+ blkid_probe_set_fslastblock(pr,
+ le64_to_cpu(bfs->total_bytes) >> sectorsize_log);
+
return 0;
}
diff --git a/libblkid/src/superblocks/ext.c b/libblkid/src/superblocks/ext.c
index 3870522fa..105bdfcf3 100644
--- a/libblkid/src/superblocks/ext.c
+++ b/libblkid/src/superblocks/ext.c
@@ -190,6 +190,11 @@ static void ext_get_info(blkid_probe pr, int ver, struct ext2_super_block *es)
if (le32_to_cpu(es->s_log_block_size) < 32)
blkid_probe_set_block_size(pr, 1024U << le32_to_cpu(es->s_log_block_size));
+
+ uint64_t fslastblock = es->s_blocks_count |
+ ((es->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT) ?
+ (uint64_t) es->s_blocks_count_hi << 32 : 0);
+ blkid_probe_set_fslastblock(pr, fslastblock);
}
diff --git a/libblkid/src/superblocks/xfs.c b/libblkid/src/superblocks/xfs.c
index 444050f55..1f2e92cac 100644
--- a/libblkid/src/superblocks/xfs.c
+++ b/libblkid/src/superblocks/xfs.c
@@ -183,6 +183,7 @@ static int probe_xfs(blkid_probe pr, const struct blkid_idmag *mag)
sizeof(xs->sb_fname));
blkid_probe_set_uuid(pr, xs->sb_uuid);
blkid_probe_set_fssize(pr, xfs_fssize(xs));
+ blkid_probe_set_fslastblock(pr, be64_to_cpu(xs->sb_dblocks));
blkid_probe_set_block_size(pr, be16_to_cpu(xs->sb_sectsize));
return 0;
}
--
2.27.0
[prev in list] [next in list] [prev in thread] [next in thread]
Configure |
About |
News |
Add a list |
Sponsored by KoreLogic