From: Darrick J. Wong <djwong@kernel.org>
Date: Wed, 7 Aug 2024 23:04:34 +0000 (-0700)
Subject: xfs: export the geometry of realtime groups to userspace
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=25c20a9079ae17a2200b0cb01d10f15c17beeffb;p=users%2Fhch%2Fxfsprogs.git

xfs: export the geometry of realtime groups to userspace

Source kernel commit: f5a734e12dae026218c45e5f46fe771492f2249d

Create an ioctl so that the kernel can report the status of realtime
groups to userspace.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
---

diff --git a/libxfs/xfs_fs.h b/libxfs/xfs_fs.h
index 65c30118e..06e8e18ad 100644
--- a/libxfs/xfs_fs.h
+++ b/libxfs/xfs_fs.h
@@ -971,6 +971,22 @@ struct xfs_getparents_by_handle {
 	struct xfs_getparents		gph_request;
 };
 
+/*
+ * Output for XFS_IOC_RTGROUP_GEOMETRY
+ */
+struct xfs_rtgroup_geometry {
+	__u32 rg_number;	/* i/o: rtgroup number */
+	__u32 rg_length;	/* o: length in blocks */
+	__u32 rg_sick;		/* o: sick things in ag */
+	__u32 rg_checked;	/* o: checked metadata in ag */
+	__u32 rg_flags;		/* i/o: flags for this ag */
+	__u32 rg_pad;		/* o: zero */
+	__u64 rg_reserved[13];	/* o: zero */
+};
+#define XFS_RTGROUP_GEOM_SICK_SUPER	(1U << 0)  /* superblock */
+#define XFS_RTGROUP_GEOM_SICK_BITMAP	(1U << 1)  /* rtbitmap */
+#define XFS_RTGROUP_GEOM_SICK_SUMMARY	(1U << 2)  /* rtsummary */
+
 /*
  * ioctl commands that are used by Linux filesystems
  */
@@ -1009,6 +1025,7 @@ struct xfs_getparents_by_handle {
 #define XFS_IOC_GETPARENTS	_IOWR('X', 62, struct xfs_getparents)
 #define XFS_IOC_GETPARENTS_BY_HANDLE _IOWR('X', 63, struct xfs_getparents_by_handle)
 #define XFS_IOC_SCRUBV_METADATA	_IOWR('X', 64, struct xfs_scrub_vec_head)
+#define XFS_IOC_RTGROUP_GEOMETRY _IOWR('X', 65, struct xfs_rtgroup_geometry)
 
 /*
  * ioctl commands that replace IRIX syssgi()'s
diff --git a/libxfs/xfs_health.h b/libxfs/xfs_health.h
index 7e77e2df9..2da645554 100644
--- a/libxfs/xfs_health.h
+++ b/libxfs/xfs_health.h
@@ -288,6 +288,8 @@ xfs_inode_is_healthy(struct xfs_inode *ip)
 
 void xfs_fsop_geom_health(struct xfs_mount *mp, struct xfs_fsop_geom *geo);
 void xfs_ag_geom_health(struct xfs_perag *pag, struct xfs_ag_geometry *ageo);
+void xfs_rtgroup_geom_health(struct xfs_rtgroup *rtg,
+		struct xfs_rtgroup_geometry *rgeo);
 void xfs_bulkstat_health(struct xfs_inode *ip, struct xfs_bulkstat *bs);
 
 #define xfs_metadata_is_sick(error) \
diff --git a/libxfs/xfs_rtgroup.c b/libxfs/xfs_rtgroup.c
index ca0b70afe..6a78dc66b 100644
--- a/libxfs/xfs_rtgroup.c
+++ b/libxfs/xfs_rtgroup.c
@@ -267,6 +267,20 @@ xfs_rtgroup_trans_join(
 	}
 }
 
+/* Retrieve rt group geometry. */
+int
+xfs_rtgroup_get_geometry(
+	struct xfs_rtgroup	*rtg,
+	struct xfs_rtgroup_geometry *rgeo)
+{
+	/* Fill out form. */
+	memset(rgeo, 0, sizeof(*rgeo));
+	rgeo->rg_number = rtg->rtg_rgno;
+	rgeo->rg_length = rtg->rtg_extents * rtg->rtg_mount->m_sb.sb_rextsize;
+	xfs_rtgroup_geom_health(rtg, rgeo);
+	return 0;
+}
+
 #ifdef CONFIG_PROVE_LOCKING
 static struct lock_class_key xfs_rtginode_lock_class;
 
diff --git a/libxfs/xfs_rtgroup.h b/libxfs/xfs_rtgroup.h
index 9bf6cb350..2d4bb09ad 100644
--- a/libxfs/xfs_rtgroup.h
+++ b/libxfs/xfs_rtgroup.h
@@ -249,6 +249,9 @@ void xfs_rtgroup_unlock(struct xfs_rtgroup *rtg, unsigned int rtglock_flags);
 void xfs_rtgroup_trans_join(struct xfs_trans *tp, struct xfs_rtgroup *rtg,
 		unsigned int rtglock_flags);
 
+int xfs_rtgroup_get_geometry(struct xfs_rtgroup *rtg,
+		struct xfs_rtgroup_geometry *rgeo);
+
 int xfs_rtginode_mkdir_parent(struct xfs_mount *mp);
 int xfs_rtginode_load_parent(struct xfs_trans *tp);
 
@@ -277,6 +280,7 @@ struct xfs_buf *xfs_rtgroup_log_super(struct xfs_trans *tp,
 # define xfs_rtgroup_lock(rtg, gf)		((void)0)
 # define xfs_rtgroup_unlock(rtg, gf)		((void)0)
 # define xfs_rtgroup_trans_join(tp, rtg, gf)	((void)0)
+# define xfs_rtgroup_get_geometry(rtg, rgeo)	(-EOPNOTSUPP)
 # define xfs_rtginode_mkdir_parent(...)		(-EOPNOTSUPP)
 # define xfs_rtginode_load_parent(...)		(-EOPNOTSUPP)
 # define xfs_rtgroup_update_super(bp, sb_bp)	((void)0)