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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb 
 kernel/fs/xfs/libxfs/xfs_da_format.h
....@@ -1,4 +1,4 @@
1
-// SPDX-License-Identifier: GPL-2.0
1
+/* SPDX-License-Identifier: GPL-2.0 */
22 /*
33  * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
44  * Copyright (c) 2013 Red Hat, Inc.
....@@ -15,8 +15,8 @@
1515  */
1616 #define XFS_DA_NODE_MAGIC	0xfebe	/* magic number: non-leaf blocks */
1717 #define XFS_ATTR_LEAF_MAGIC	0xfbee	/* magic number: attribute leaf blks */
18
-#define	XFS_DIR2_LEAF1_MAGIC	0xd2f1	/* magic number: v2 dirlf single blks */
19
-#define	XFS_DIR2_LEAFN_MAGIC	0xd2ff	/* magic number: v2 dirlf multi blks */
18
+#define XFS_DIR2_LEAF1_MAGIC	0xd2f1	/* magic number: v2 dirlf single blks */
19
+#define XFS_DIR2_LEAFN_MAGIC	0xd2ff	/* magic number: v2 dirlf multi blks */
2020 
2121 typedef struct xfs_da_blkinfo {
2222 	__be32		forw;			/* previous block in list */
....@@ -35,8 +35,8 @@
3535  */
3636 #define XFS_DA3_NODE_MAGIC	0x3ebe	/* magic number: non-leaf blocks */
3737 #define XFS_ATTR3_LEAF_MAGIC	0x3bee	/* magic number: attribute leaf blks */
38
-#define	XFS_DIR3_LEAF1_MAGIC	0x3df1	/* magic number: v2 dirlf single blks */
39
-#define	XFS_DIR3_LEAFN_MAGIC	0x3dff	/* magic number: v2 dirlf multi blks */
38
+#define XFS_DIR3_LEAF1_MAGIC	0x3df1	/* magic number: v3 dirlf single blks */
39
+#define XFS_DIR3_LEAFN_MAGIC	0x3dff	/* magic number: v3 dirlf multi blks */
4040 
4141 struct xfs_da3_blkinfo {
4242 	/*
....@@ -61,7 +61,7 @@
6161  * Since we have duplicate keys, use a binary search but always follow
6262  * all match in the block, not just the first match found.
6363  */
64
-#define	XFS_DA_NODE_MAXDEPTH	5	/* max depth of Btree */
64
+#define XFS_DA_NODE_MAXDEPTH	5	/* max depth of Btree */
6565 
6666 typedef struct xfs_da_node_hdr {
6767 	struct xfs_da_blkinfo	info;	/* block type, links, etc. */
....@@ -91,19 +91,6 @@
9191 struct xfs_da3_intnode {
9292 	struct xfs_da3_node_hdr	hdr;
9393 	struct xfs_da_node_entry __btree[];
94
-};
95
-
96
-/*
97
- * In-core version of the node header to abstract the differences in the v2 and
98
- * v3 disk format of the headers. Callers need to convert to/from disk format as
99
- * appropriate.
100
- */
101
-struct xfs_da3_icnode_hdr {
102
-	uint32_t	forw;
103
-	uint32_t	back;
104
-	uint16_t	magic;
105
-	uint16_t	count;
106
-	uint16_t	level;
10794 };
10895 
10996 /*
....@@ -230,7 +217,7 @@
230217 	 * A 64-bit or 32-bit inode number follows here, at a variable offset
231218 	 * after the name.
232219 	 */
233
-} xfs_dir2_sf_entry_t;
220
+} __packed xfs_dir2_sf_entry_t;
234221 
235222 static inline int xfs_dir2_sf_hdr_size(int i8count)
236223 {
....@@ -434,14 +421,6 @@
434421 	__be32			pad;		/* 64 bit alignment */
435422 };
436423 
437
-struct xfs_dir3_icleaf_hdr {
438
-	uint32_t		forw;
439
-	uint32_t		back;
440
-	uint16_t		magic;
441
-	uint16_t		count;
442
-	uint16_t		stale;
443
-};
444
-
445424 /*
446425  * Leaf block entry.
447426  */
....@@ -482,7 +461,7 @@
482461 }
483462 
484463 /*
485
- * Free space block defintions for the node format.
464
+ * Free space block definitions for the node format.
486465  */
487466 
488467 /*
....@@ -519,19 +498,6 @@
519498 };
520499 
521500 #define XFS_DIR3_FREE_CRC_OFF  offsetof(struct xfs_dir3_free, hdr.hdr.crc)
522
-
523
-/*
524
- * In core version of the free block header, abstracted away from on-disk format
525
- * differences. Use this in the code, and convert to/from the disk version using
526
- * xfs_dir3_free_hdr_from_disk/xfs_dir3_free_hdr_to_disk.
527
- */
528
-struct xfs_dir3_icfree_hdr {
529
-	uint32_t	magic;
530
-	uint32_t	firstdb;
531
-	uint32_t	nvalid;
532
-	uint32_t	nused;
533
-
534
-};
535501 
536502 /*
537503  * Single block format.
....@@ -613,7 +579,7 @@
613579 /*
614580  * Entries are packed toward the top as tight as possible.
615581  */
616
-typedef struct xfs_attr_shortform {
582
+struct xfs_attr_shortform {
617583 	struct xfs_attr_sf_hdr {	/* constant-structure header block */
618584 		__be16	totsize;	/* total bytes in shortform list */
619585 		__u8	count;	/* count of active entries */
....@@ -623,9 +589,9 @@
623589 		uint8_t namelen;	/* actual length of name (no NULL) */
624590 		uint8_t valuelen;	/* actual length of value (no NULL) */
625591 		uint8_t flags;	/* flags bits (see xfs_attr_leaf.h) */
626
-		uint8_t nameval[1];	/* name & value bytes concatenated */
592
+		uint8_t nameval[];	/* name & value bytes concatenated */
627593 	} list[1];			/* variable sized array */
628
-} xfs_attr_shortform_t;
594
+};
629595 
630596 typedef struct xfs_attr_leaf_map {	/* RLE map of free bytes */
631597 	__be16	base;			  /* base of free region */
....@@ -710,29 +676,6 @@
710676 };
711677 
712678 /*
713
- * incore, neutral version of the attribute leaf header
714
- */
715
-struct xfs_attr3_icleaf_hdr {
716
-	uint32_t	forw;
717
-	uint32_t	back;
718
-	uint16_t	magic;
719
-	uint16_t	count;
720
-	uint16_t	usedbytes;
721
-	/*
722
-	 * firstused is 32-bit here instead of 16-bit like the on-disk variant
723
-	 * to support maximum fsb size of 64k without overflow issues throughout
724
-	 * the attr code. Instead, the overflow condition is handled on
725
-	 * conversion to/from disk.
726
-	 */
727
-	uint32_t	firstused;
728
-	__u8		holes;
729
-	struct {
730
-		uint16_t	base;
731
-		uint16_t	size;
732
-	} freemap[XFS_ATTR_LEAF_MAPSIZE];
733
-};
734
-
735
-/*
736679  * Special value to represent fs block size in the leaf header firstused field.
737680  * Only used when block size overflows the 2-bytes available on disk.
738681  */
....@@ -740,8 +683,6 @@
740683 
741684 /*
742685  * Flags used in the leaf_entry[i].flags field.
743
- * NOTE: the INCOMPLETE bit must not collide with the flags bits specified
744
- * on the system call, they are "or"ed together for various operations.
745686  */
746687 #define	XFS_ATTR_LOCAL_BIT	0	/* attr is stored locally */
747688 #define	XFS_ATTR_ROOT_BIT	1	/* limit access to trusted attrs */
....@@ -751,19 +692,7 @@
751692 #define XFS_ATTR_ROOT		(1 << XFS_ATTR_ROOT_BIT)
752693 #define XFS_ATTR_SECURE		(1 << XFS_ATTR_SECURE_BIT)
753694 #define XFS_ATTR_INCOMPLETE	(1 << XFS_ATTR_INCOMPLETE_BIT)
754
-
755
-/*
756
- * Conversion macros for converting namespace bits from argument flags
757
- * to ondisk flags.
758
- */
759
-#define XFS_ATTR_NSP_ARGS_MASK		(ATTR_ROOT | ATTR_SECURE)
760695 #define XFS_ATTR_NSP_ONDISK_MASK	(XFS_ATTR_ROOT | XFS_ATTR_SECURE)
761
-#define XFS_ATTR_NSP_ONDISK(flags)	((flags) & XFS_ATTR_NSP_ONDISK_MASK)
762
-#define XFS_ATTR_NSP_ARGS(flags)	((flags) & XFS_ATTR_NSP_ARGS_MASK)
763
-#define XFS_ATTR_NSP_ARGS_TO_ONDISK(x)	(((x) & ATTR_ROOT ? XFS_ATTR_ROOT : 0) |\
764
-					 ((x) & ATTR_SECURE ? XFS_ATTR_SECURE : 0))
765
-#define XFS_ATTR_NSP_ONDISK_TO_ARGS(x)	(((x) & XFS_ATTR_ROOT ? ATTR_ROOT : 0) |\
766
-					 ((x) & XFS_ATTR_SECURE ? ATTR_SECURE : 0))
767696 
768697 /*
769698  * Alignment for namelist and valuelist entries (since they are mixed
....@@ -817,14 +746,14 @@
817746  */
818747 static inline int xfs_attr_leaf_entsize_remote(int nlen)
819748 {
820
-	return ((uint)sizeof(xfs_attr_leaf_name_remote_t) - 1 + (nlen) + \
821
-		XFS_ATTR_LEAF_NAME_ALIGN - 1) & ~(XFS_ATTR_LEAF_NAME_ALIGN - 1);
749
+	return round_up(sizeof(struct xfs_attr_leaf_name_remote) - 1 +
750
+			nlen, XFS_ATTR_LEAF_NAME_ALIGN);
822751 }
823752 
824753 static inline int xfs_attr_leaf_entsize_local(int nlen, int vlen)
825754 {
826
-	return ((uint)sizeof(xfs_attr_leaf_name_local_t) - 1 + (nlen) + (vlen) +
827
-		XFS_ATTR_LEAF_NAME_ALIGN - 1) & ~(XFS_ATTR_LEAF_NAME_ALIGN - 1);
755
+	return round_up(sizeof(struct xfs_attr_leaf_name_local) - 1 +
756
+			nlen + vlen, XFS_ATTR_LEAF_NAME_ALIGN);
828757 }
829758 
830759 static inline int xfs_attr_leaf_entsize_local_max(int bsize)
....@@ -869,4 +798,7 @@
869798 	return 1 << (sbp->sb_blocklog + sbp->sb_dirblklog);
870799 }
871800 
801
+xfs_failaddr_t xfs_da3_blkinfo_verify(struct xfs_buf *bp,
802
+				      struct xfs_da3_blkinfo *hdr3);
803
+
872804 #endif /* __XFS_DA_FORMAT_H__ */