From f1d68981523fe0206ecac0e5c4ee55f422684ddf Mon Sep 17 00:00:00 2001
From: "Darrick J. Wong" <djwong@kernel.org>
Date: Wed, 3 Jul 2024 14:22:09 -0700
Subject: [PATCH] xfs_db: dump rt summary blocks

Now that rtsummary blocks have a header, make it so that xfs_db can
analyze the structure.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
 db/field.c   |  4 ++++
 db/field.h   |  2 ++
 db/inode.c   |  5 ++++-
 db/rtgroup.c | 20 ++++++++++++++++++++
 db/rtgroup.h |  3 +++
 db/type.c    |  5 +++++
 db/type.h    |  1 +
 7 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/db/field.c b/db/field.c
index b4f995849..204e0cb0d 100644
--- a/db/field.c
+++ b/db/field.c
@@ -409,6 +409,10 @@ const ftattr_t	ftattrtab[] = {
 	  0, NULL, NULL },
 	{ FLDT_RGBITMAP, "rgbitmap", NULL, (char *)rgbitmap_flds, btblock_size,
 	  FTARG_SIZE, NULL, rgbitmap_flds },
+	{ FLDT_SUMINFO, "suminfo", fp_num, "%u", SI(bitsz(xfs_suminfo_t)),
+	  0, NULL, NULL },
+	{ FLDT_RGSUMMARY, "rgsummary", NULL, (char *)rgsummary_flds,
+	  btblock_size, FTARG_SIZE, NULL, rgsummary_flds },
 
 	{ FLDT_ZZZ, NULL }
 };
diff --git a/db/field.h b/db/field.h
index d553d57ce..6763911c0 100644
--- a/db/field.h
+++ b/db/field.h
@@ -197,6 +197,8 @@ typedef enum fldt	{
 
 	FLDT_RTWORD,
 	FLDT_RGBITMAP,
+	FLDT_SUMINFO,
+	FLDT_RGSUMMARY,
 
 	FLDT_ZZZ			/* mark last entry */
 } fldt_t;
diff --git a/db/inode.c b/db/inode.c
index db7780d69..df46a836f 100644
--- a/db/inode.c
+++ b/db/inode.c
@@ -646,8 +646,11 @@ inode_next_type(void)
 			if (xfs_has_rtgroups(mp))
 				return TYP_RGBITMAP;
 			return TYP_RTBITMAP;
-		} else if (iocur_top->ino == mp->m_sb.sb_rsumino)
+		} else if (iocur_top->ino == mp->m_sb.sb_rsumino) {
+			if (xfs_has_rtgroups(mp))
+				return TYP_RGSUMMARY;
 			return TYP_RTSUMMARY;
+		}
 		else if (iocur_top->ino == mp->m_sb.sb_uquotino ||
 			 iocur_top->ino == mp->m_sb.sb_gquotino ||
 			 iocur_top->ino == mp->m_sb.sb_pquotino)
diff --git a/db/rtgroup.c b/db/rtgroup.c
index 3ef2dc8fe..c6b96c9dc 100644
--- a/db/rtgroup.c
+++ b/db/rtgroup.c
@@ -132,3 +132,23 @@ const field_t	rgbitmap_hfld[] = {
 	{ "", FLDT_RGBITMAP, OI(0), C1, 0, TYP_NONE },
 	{ NULL }
 };
+
+#define	OFF(f)	bitize(offsetof(struct xfs_rtbuf_blkinfo, rt_ ## f))
+const field_t	rgsummary_flds[] = {
+	{ "magicnum", FLDT_UINT32X, OI(OFF(magic)), C1, 0, TYP_NONE },
+	{ "crc", FLDT_CRC, OI(OFF(crc)), C1, 0, TYP_NONE },
+	{ "owner", FLDT_INO, OI(OFF(owner)), C1, 0, TYP_NONE },
+	{ "bno", FLDT_DFSBNO, OI(OFF(blkno)), C1, 0, TYP_BMAPBTD },
+	{ "lsn", FLDT_UINT64X, OI(OFF(lsn)), C1, 0, TYP_NONE },
+	{ "uuid", FLDT_UUID, OI(OFF(uuid)), C1, 0, TYP_NONE },
+	/* the suminfo array is after the actual structure */
+	{ "suminfo", FLDT_SUMINFO, OI(bitize(sizeof(struct xfs_rtbuf_blkinfo))),
+	  rtwords_count, FLD_ARRAY | FLD_COUNT, TYP_DATA },
+	{ NULL }
+};
+#undef OFF
+
+const field_t	rgsummary_hfld[] = {
+	{ "", FLDT_RGSUMMARY, OI(0), C1, 0, TYP_NONE },
+	{ NULL }
+};
diff --git a/db/rtgroup.h b/db/rtgroup.h
index 06f554e18..5b120f2c9 100644
--- a/db/rtgroup.h
+++ b/db/rtgroup.h
@@ -12,6 +12,9 @@ extern const struct field	rtsb_hfld[];
 extern const struct field	rgbitmap_flds[];
 extern const struct field	rgbitmap_hfld[];
 
+extern const struct field	rgsummary_flds[];
+extern const struct field	rgsummary_hfld[];
+
 extern void	rtsb_init(void);
 extern int	rtsb_size(void *obj, int startoff, int idx);
 
diff --git a/db/type.c b/db/type.c
index 65e7b2414..2091b4ac8 100644
--- a/db/type.c
+++ b/db/type.c
@@ -68,6 +68,7 @@ static const typ_t	__typtab[] = {
 	{ TYP_FINOBT, "finobt", handle_struct, finobt_hfld, NULL,
 		TYP_F_NO_CRC_OFF },
 	{ TYP_RGBITMAP, NULL },
+	{ TYP_RGSUMMARY, NULL },
 	{ TYP_NONE, NULL }
 };
 
@@ -116,6 +117,8 @@ static const typ_t	__typtab_crc[] = {
 		&xfs_finobt_buf_ops, XFS_BTREE_SBLOCK_CRC_OFF },
 	{ TYP_RGBITMAP, "rgbitmap", handle_struct, rgbitmap_hfld,
 		&xfs_rtbitmap_buf_ops, XFS_RTBUF_CRC_OFF },
+	{ TYP_RGSUMMARY, "rgsummary", handle_struct, rgsummary_hfld,
+		&xfs_rtsummary_buf_ops, XFS_RTBUF_CRC_OFF },
 	{ TYP_NONE, NULL }
 };
 
@@ -164,6 +167,8 @@ static const typ_t	__typtab_spcrc[] = {
 		&xfs_finobt_buf_ops, XFS_BTREE_SBLOCK_CRC_OFF },
 	{ TYP_RGBITMAP, "rgbitmap", handle_struct, rgbitmap_hfld,
 		&xfs_rtbitmap_buf_ops, XFS_RTBUF_CRC_OFF },
+	{ TYP_RGSUMMARY, "rgsummary", handle_struct, rgsummary_hfld,
+		&xfs_rtsummary_buf_ops, XFS_RTBUF_CRC_OFF },
 	{ TYP_NONE, NULL }
 };
 
diff --git a/db/type.h b/db/type.h
index e2148c635..e7f0ecc17 100644
--- a/db/type.h
+++ b/db/type.h
@@ -36,6 +36,7 @@ typedef enum typnm
 	TYP_TEXT,
 	TYP_FINOBT,
 	TYP_RGBITMAP,
+	TYP_RGSUMMARY,
 	TYP_NONE
 } typnm_t;
 
-- 
2.50.1