On Apr 16, 2021, at 10:21 AM, Chung-Chiang Cheng [off-list ref] wrote:

The create_date field of inode in hfsplus is corresponding to kstat.btime
and could be reported in statx.

Signed-off-by: Chung-Chiang Cheng <redacted>
---
fs/hfsplus/inode.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
index 078c5c8a5156..aab3388a0fd7 100644
--- a/fs/hfsplus/inode.c
+++ b/fs/hfsplus/inode.c

@@ -278,6 +278,11 @@ int hfsplus_getattr(struct user_namespace *mnt_userns, const struct path *path,

	struct inode *inode = d_inode(path->dentry);
	struct hfsplus_inode_info *hip = HFSPLUS_I(inode);

+	if (request_mask & STATX_BTIME) {
+		stat->result_mask |= STATX_BTIME;
+		stat->btime = hfsp_mt2ut(hip->create_date);
+	}
+
	if (inode->i_flags & S_APPEND)
		stat->attributes |= STATX_ATTR_APPEND;
	if (inode->i_flags & S_IMMUTABLE)
-- 
2.25.1