typedef struct xfs_buf {
struct cache_node b_node;
unsigned int b_flags;
- xfs_daddr_t b_blkno;
+ xfs_daddr_t b_bn;
unsigned b_bcount;
unsigned int b_length;
dev_t b_dev;
pthread_mutex_t b_lock;
pthread_t b_holder;
unsigned int b_recur;
- void *b_fsprivate;
+ void *b_fspriv;
void *b_fsprivate2;
void *b_fsprivate3;
void *b_addr;
LIBXFS_B_DISCONTIG = 0x0010, /* discontiguous buffer */
};
+#define XFS_BUF_DADDR_NULL ((xfs_daddr_t) (-1LL))
+
#define XFS_BUF_PTR(bp) ((char *)(bp)->b_addr)
#define xfs_buf_offset(bp, offset) (XFS_BUF_PTR(bp) + (offset))
-#define XFS_BUF_ADDR(bp) ((bp)->b_blkno)
+#define XFS_BUF_ADDR(bp) ((bp)->b_bn)
#define XFS_BUF_SIZE(bp) ((bp)->b_bcount)
#define XFS_BUF_COUNT(bp) ((bp)->b_bcount)
#define XFS_BUF_TARGET(bp) ((bp)->b_dev)
XFS_BUF_SET_COUNT(bp,cnt); \
})
-#define XFS_BUF_SET_ADDR(bp,blk) ((bp)->b_blkno = (blk))
+#define XFS_BUF_SET_ADDR(bp,blk) ((bp)->b_bn = (blk))
#define XFS_BUF_SET_COUNT(bp,cnt) ((bp)->b_bcount = (cnt))
-#define XFS_BUF_FSPRIVATE(bp,type) ((type)(bp)->b_fsprivate)
-#define XFS_BUF_SET_FSPRIVATE(bp,val) (bp)->b_fsprivate = (void *)(val)
+#define XFS_BUF_FSPRIVATE(bp,type) ((type)(bp)->b_fspriv)
+#define XFS_BUF_SET_FSPRIVATE(bp,val) (bp)->b_fspriv = (void *)(val)
#define XFS_BUF_FSPRIVATE2(bp,type) ((type)(bp)->b_fsprivate2)
#define XFS_BUF_SET_FSPRIVATE2(bp,val) (bp)->b_fsprivate2 = (void *)(val)
#define XFS_BUF_FSPRIVATE3(bp,type) ((type)(bp)->b_fsprivate3)
struct xfs_log_item_desc *li_desc; /* ptr to current desc*/
struct xfs_mount *li_mountp; /* ptr to fs mount */
uint li_type; /* item type */
+ xfs_lsn_t li_lsn;
} xfs_log_item_t;
typedef struct xfs_inode_log_item {
* by blockcount and blockno. All blocks look the same to make the code
* simpler; if we have time later, we'll make the optimizations.
*/
-#define XFS_ABTB_MAGIC 0x41425442 /* 'ABTB' for bno tree */
-#define XFS_ABTC_MAGIC 0x41425443 /* 'ABTC' for cnt tree */
+#define XFS_ABTB_MAGIC 0x41425442 /* 'ABTB' for bno tree */
+#define XFS_ABTB_CRC_MAGIC 0x41423342 /* 'AB3B' */
+#define XFS_ABTC_MAGIC 0x41425443 /* 'ABTC' for cnt tree */
+#define XFS_ABTC_CRC_MAGIC 0x41423343 /* 'AB3C' */
/*
* Data record/key structure
/*
* Btree block header size depends on a superblock flag.
- *
- * (not quite yet, but soon)
*/
-#define XFS_ALLOC_BLOCK_LEN(mp) XFS_BTREE_SBLOCK_LEN
+#define XFS_ALLOC_BLOCK_LEN(mp) \
+ (xfs_sb_version_hascrc(&((mp)->m_sb)) ? \
+ XFS_BTREE_SBLOCK_LEN + XFS_BTREE_CRCBLOCK_ADD : \
+ XFS_BTREE_SBLOCK_LEN)
/*
* Record, key, and pointer address macros for btree blocks.
#ifndef __XFS_BMAP_BTREE_H__
#define __XFS_BMAP_BTREE_H__
-#define XFS_BMAP_MAGIC 0x424d4150 /* 'BMAP' */
+#define XFS_BMAP_MAGIC 0x424d4150 /* 'BMAP' */
+#define XFS_BMAP_CRC_MAGIC 0x424d4133 /* 'BMA3' */
struct xfs_btree_cur;
struct xfs_btree_block;
/*
* Btree block header size depends on a superblock flag.
- *
- * (not quite yet, but soon)
*/
-#define XFS_BMBT_BLOCK_LEN(mp) XFS_BTREE_LBLOCK_LEN
+#define XFS_BMBT_BLOCK_LEN(mp) \
+ (xfs_sb_version_hascrc(&((mp)->m_sb)) ? \
+ XFS_BTREE_LBLOCK_LEN + XFS_BTREE_CRCBLOCK_ADD : \
+ XFS_BTREE_LBLOCK_LEN)
#define XFS_BMBT_REC_ADDR(mp, block, index) \
((xfs_bmbt_rec_t *) \
#define XFS_BMAP_BROOT_PTR_ADDR(mp, bb, i, sz) \
XFS_BMBT_PTR_ADDR(mp, bb, i, xfs_bmbt_maxrecs(mp, sz, 0))
-#define XFS_BMAP_BROOT_SPACE_CALC(nrecs) \
- (int)(XFS_BTREE_LBLOCK_LEN + \
+#define XFS_BMAP_BROOT_SPACE_CALC(mp, nrecs) \
+ (int)(XFS_BMBT_BLOCK_LEN(mp) + \
((nrecs) * (sizeof(xfs_bmbt_key_t) + sizeof(xfs_bmbt_ptr_t))))
-#define XFS_BMAP_BROOT_SPACE(bb) \
- (XFS_BMAP_BROOT_SPACE_CALC(be16_to_cpu((bb)->bb_numrecs)))
+#define XFS_BMAP_BROOT_SPACE(mp, bb) \
+ (XFS_BMAP_BROOT_SPACE_CALC(mp, be16_to_cpu((bb)->bb_numrecs)))
#define XFS_BMDR_SPACE_CALC(nrecs) \
(int)(sizeof(xfs_bmdr_block_t) + \
((nrecs) * (sizeof(xfs_bmbt_key_t) + sizeof(xfs_bmbt_ptr_t))))
/*
* Prototypes for xfs_bmap.c to call.
*/
-extern void xfs_bmdr_to_bmbt(struct xfs_mount *, xfs_bmdr_block_t *, int,
+extern void xfs_bmdr_to_bmbt(struct xfs_inode *, xfs_bmdr_block_t *, int,
struct xfs_btree_block *, int);
extern void xfs_bmbt_get_all(xfs_bmbt_rec_host_t *r, xfs_bmbt_irec_t *s);
extern xfs_filblks_t xfs_bmbt_get_blockcount(xfs_bmbt_rec_host_t *r);
* Generic btree header.
*
* This is a combination of the actual format used on disk for short and long
- * format btrees. The first three fields are shared by both format, but
- * the pointers are different and should be used with care.
+ * format btrees. The first three fields are shared by both format, but the
+ * pointers are different and should be used with care.
*
- * To get the size of the actual short or long form headers please use
- * the size macros below. Never use sizeof(xfs_btree_block).
+ * To get the size of the actual short or long form headers please use the size
+ * macros below. Never use sizeof(xfs_btree_block).
+ *
+ * The blkno, crc, lsn, owner and uuid fields are only available in filesystems
+ * with the crc feature bit, and all accesses to them must be conditional on
+ * that flag.
*/
struct xfs_btree_block {
__be32 bb_magic; /* magic number for block type */
struct {
__be32 bb_leftsib;
__be32 bb_rightsib;
+
+ __be64 bb_blkno;
+ __be64 bb_lsn;
+ uuid_t bb_uuid;
+ __be32 bb_owner;
+ __le32 bb_crc;
} s; /* short form pointers */
struct {
__be64 bb_leftsib;
__be64 bb_rightsib;
+
+ __be64 bb_blkno;
+ __be64 bb_lsn;
+ uuid_t bb_uuid;
+ __be64 bb_owner;
+ __le32 bb_crc;
+ __be32 bb_pad; /* padding for alignment */
} l; /* long form pointers */
} bb_u; /* rest */
};
#define XFS_BTREE_SBLOCK_LEN 16 /* size of a short form block */
#define XFS_BTREE_LBLOCK_LEN 24 /* size of a long form block */
+#define XFS_BTREE_CRCBLOCK_ADD 32 /* size of blkno + crc + uuid */
+
+#define XFS_BTREE_SBLOCK_CRC_OFF \
+ offsetof(struct xfs_btree_block, bb_u.s.bb_crc)
+#define XFS_BTREE_LBLOCK_CRC_OFF \
+ offsetof(struct xfs_btree_block, bb_u.l.bb_crc)
/*
#define XFS_BB_NUMRECS 0x04
#define XFS_BB_LEFTSIB 0x08
#define XFS_BB_RIGHTSIB 0x10
+#define XFS_BB_BLKNO 0x20
#define XFS_BB_NUM_BITS 5
#define XFS_BB_ALL_BITS ((1 << XFS_BB_NUM_BITS) - 1)
-
-/*
- * Magic numbers for btree blocks.
- */
-extern const __uint32_t xfs_magics[];
+#define XFS_BB_NUM_BITS_CRC 8
+#define XFS_BB_ALL_BITS_CRC ((1 << XFS_BB_NUM_BITS_CRC) - 1)
/*
* Generic stats interface
#define XFS_BTREE_LONG_PTRS (1<<0) /* pointers are 64bits long */
#define XFS_BTREE_ROOT_IN_INODE (1<<1) /* root may be variable size */
#define XFS_BTREE_LASTREC_UPDATE (1<<2) /* track last rec externally */
+#define XFS_BTREE_CRC_BLOCKS (1<<3) /* uses extended btree blocks */
#define XFS_BTREE_NOERROR 0
__u32 magic,
__u16 level,
__u16 numrecs,
+ __u64 owner,
unsigned int flags);
+void
+xfs_btree_init_block_int(
+ struct xfs_mount *mp,
+ struct xfs_btree_block *buf,
+ xfs_daddr_t blkno,
+ __u32 magic,
+ __u16 level,
+ __u16 numrecs,
+ __u64 owner,
+ unsigned int flags);
+
/*
* Common btree core entry points.
*/
int xfs_btree_delete(struct xfs_btree_cur *, int *);
int xfs_btree_get_rec(struct xfs_btree_cur *, union xfs_btree_rec **, int *);
+/*
+ * btree block CRC helpers
+ */
+void xfs_btree_lblock_calc_crc(struct xfs_buf *);
+bool xfs_btree_lblock_verify_crc(struct xfs_buf *);
+void xfs_btree_sblock_calc_crc(struct xfs_buf *);
+bool xfs_btree_sblock_verify_crc(struct xfs_buf *);
+
/*
* Internal btree helpers also used by xfs_bmap.c.
*/
* This flag indicates that the buffer contains on disk inodes
* and requires special recovery handling.
*/
-#define XFS_BLF_INODE_BUF 0x1
+#define XFS_BLF_INODE_BUF (1<<0)
/*
* This flag indicates that the buffer should not be replayed
* during recovery because its blocks are being freed.
*/
-#define XFS_BLF_CANCEL 0x2
+#define XFS_BLF_CANCEL (1<<1)
+
/*
* This flag indicates that the buffer contains on disk
* user or group dquots and may require special recovery handling.
*/
-#define XFS_BLF_UDQUOT_BUF 0x4
-#define XFS_BLF_PDQUOT_BUF 0x8
-#define XFS_BLF_GDQUOT_BUF 0x10
+#define XFS_BLF_UDQUOT_BUF (1<<2)
+#define XFS_BLF_PDQUOT_BUF (1<<3)
+#define XFS_BLF_GDQUOT_BUF (1<<4)
+
+/*
+ * all buffers now need flags to tell recovery where the magic number
+ * is so that it can verify and calculate the CRCs on the buffer correctly
+ * once the changes have been replayed into the buffer.
+ */
+#define XFS_BLF_BTREE_BUF (1<<5)
+
+#define XFS_BLF_TYPE_MASK \
+ (XFS_BLF_UDQUOT_BUF | \
+ XFS_BLF_PDQUOT_BUF | \
+ XFS_BLF_GDQUOT_BUF | \
+ XFS_BLF_BTREE_BUF)
#define XFS_BLF_CHUNK 128
#define XFS_BLF_SHIFT 7
#define XFS_LITINO(mp, version) \
((int)(((mp)->m_sb.sb_inodesize) - sizeof(struct xfs_dinode)))
-#define XFS_BROOT_SIZE_ADJ \
- (XFS_BTREE_LBLOCK_LEN - sizeof(xfs_bmdr_block_t))
+#define XFS_BROOT_SIZE_ADJ(ip) \
+ (XFS_BMBT_BLOCK_LEN((ip)->i_mount) - sizeof(xfs_bmdr_block_t))
/*
* Inode data & attribute fork sizes, per inode.
/*
* There is a btree for the inode map per allocation group.
*/
-#define XFS_IBT_MAGIC 0x49414254 /* 'IABT' */
+#define XFS_IBT_MAGIC 0x49414254 /* 'IABT' */
+#define XFS_IBT_CRC_MAGIC 0x49414233 /* 'IAB3' */
typedef __uint64_t xfs_inofree_t;
#define XFS_INODES_PER_CHUNK (NBBY * sizeof(xfs_inofree_t))
/*
* Btree block header size depends on a superblock flag.
- *
- * (not quite yet, but soon)
*/
-#define XFS_INOBT_BLOCK_LEN(mp) XFS_BTREE_SBLOCK_LEN
+#define XFS_INOBT_BLOCK_LEN(mp) \
+ (xfs_sb_version_hascrc(&((mp)->m_sb)) ? \
+ XFS_BTREE_SBLOCK_LEN + XFS_BTREE_CRCBLOCK_ADD : \
+ XFS_BTREE_SBLOCK_LEN)
/*
* Record, key, and pointer address macros for btree blocks.
void xfs_trans_stale_inode_buf(xfs_trans_t *, struct xfs_buf *);
void xfs_trans_dquot_buf(xfs_trans_t *, struct xfs_buf *, uint);
void xfs_trans_inode_alloc_buf(xfs_trans_t *, struct xfs_buf *);
+void xfs_trans_buf_set_type(struct xfs_trans *, struct xfs_buf *,
+ uint);
void xfs_trans_ichgtime(struct xfs_trans *, struct xfs_inode *, int);
void xfs_trans_ijoin(struct xfs_trans *, struct xfs_inode *, uint);
void xfs_trans_log_buf(xfs_trans_t *, struct xfs_buf *, uint, uint);
#ifdef IO_BCOMPARE_CHECK
if (bp->b_dev == bkey->device &&
- bp->b_blkno == bkey->blkno &&
+ bp->b_bn == bkey->blkno &&
bp->b_bcount != BBTOB(bkey->bblen))
fprintf(stderr, "%lx: Badness in key lookup (length)\n"
"bp=(bno 0x%llx, len %u bytes) key=(bno 0x%llx, len %u bytes)\n",
pthread_self(),
- (unsigned long long)bp->b_blkno, (int)bp->b_bcount,
+ (unsigned long long)bp->b_bn, (int)bp->b_bcount,
(unsigned long long)bkey->blkno, BBTOB(bkey->bblen));
#endif
return (bp->b_dev == bkey->device &&
- bp->b_blkno == bkey->blkno &&
+ bp->b_bn == bkey->blkno &&
bp->b_bcount == BBTOB(bkey->bblen));
}
libxfs_bprint(xfs_buf_t *bp)
{
fprintf(stderr, "Buffer 0x%p blkno=%llu bytes=%u flags=0x%x count=%u\n",
- bp, (unsigned long long)bp->b_blkno, (unsigned)bp->b_bcount,
+ bp, (unsigned long long)bp->b_bn, (unsigned)bp->b_bcount,
bp->b_flags, bp->b_node.cn_count);
}
__initbuf(xfs_buf_t *bp, dev_t device, xfs_daddr_t bno, unsigned int bytes)
{
bp->b_flags = 0;
- bp->b_blkno = bno;
+ bp->b_bn = bno;
bp->b_bcount = bytes;
bp->b_length = BTOBB(bytes);
bp->b_dev = device;
struct xfs_bufkey key = {0};
key.device = bp->b_dev;
- key.blkno = bp->b_blkno;
+ key.blkno = bp->b_bn;
key.bblen = bp->b_bcount >> BBSHIFT;
cache_node_purge(libxfs_bcache, &key, (struct cache_node *)bp);
error = __read_buf(fd, bp->b_addr, bytes, LIBXFS_BBTOOFF64(blkno), flags);
if (!error &&
bp->b_dev == dev &&
- bp->b_blkno == blkno &&
+ bp->b_bn == blkno &&
bp->b_bcount == bytes)
bp->b_flags |= LIBXFS_B_UPTODATE;
#ifdef IO_DEBUG
#ifdef IO_DEBUG
printf("%lx: %s: read %lu bytes, error %d, blkno=%llu(%llu), %p\n",
pthread_self(), __FUNCTION__, buf - (char *)bp->b_addr, error,
- (long long)LIBXFS_BBTOOFF64(bp->b_blkno), (long long)bp->b_blkno, bp);
+ (long long)LIBXFS_BBTOOFF64(bp->b_bn), (long long)bp->b_bn, bp);
#endif
return bp;
}
if (!(bp->b_flags & LIBXFS_B_DISCONTIG)) {
error = __write_buf(fd, bp->b_addr, bp->b_bcount,
- LIBXFS_BBTOOFF64(bp->b_blkno), bp->b_flags);
+ LIBXFS_BBTOOFF64(bp->b_bn), bp->b_flags);
} else {
int i;
char *buf = bp->b_addr;
#ifdef IO_DEBUG
printf("%lx: %s: wrote %u bytes, blkno=%llu(%llu), %p\n",
pthread_self(), __FUNCTION__, bp->b_bcount,
- (long long)LIBXFS_BBTOOFF64(bp->b_blkno),
- (long long)bp->b_blkno, bp);
+ (long long)LIBXFS_BBTOOFF64(bp->b_bn),
+ (long long)bp->b_bn, bp);
#endif
if (!error) {
bp->b_flags |= LIBXFS_B_UPTODATE;
if (boff + len > bp->b_bcount) {
printf("Badness, iomove out of range!\n"
"bp=(bno 0x%llx, bytes %u) range=(boff %u, bytes %u)\n",
- (long long)bp->b_blkno, bp->b_bcount, boff, len);
+ (long long)bp->b_bn, bp->b_bcount, boff, len);
abort();
}
#endif
#define xfs_trans_agblocks_delta(tp, d)
#define xfs_trans_agflist_delta(tp, d)
#define xfs_trans_agbtree_delta(tp, d)
+#define xfs_trans_buf_set_type(tp, bp, t)
#define xfs_buf_readahead(a,b,c,ops) ((void) 0) /* no readahead */
#define xfs_buf_readahead_map(a,b,c,ops) ((void) 0) /* no readahead */
#define xfs_trans_unreserve_quota_nblks(t,i,b,n,f) ((void) 0)
#define xfs_qm_dqattach(i,f) (0)
+#define uuid_copy(s,d) platform_uuid_copy((s),(d))
+#define uuid_equal(s,d) (platform_uuid_compare((s),(d)) == 0)
+
/*
* Prototypes for kernel static functions that are aren't in their
* associated header files
return (__int64_t)be32_to_cpu(kp->ar_startblock) - rec->ar_startblock;
}
-static void
+static bool
xfs_allocbt_verify(
struct xfs_buf *bp)
{
struct xfs_btree_block *block = XFS_BUF_TO_BLOCK(bp);
struct xfs_perag *pag = bp->b_pag;
unsigned int level;
- int sblock_ok; /* block passes checks */
/*
* magic number and level verification
*
- * During growfs operations, we can't verify the exact level as the
- * perag is not fully initialised and hence not attached to the buffer.
- * In this case, check against the maximum tree depth.
+ * During growfs operations, we can't verify the exact level or owner as
+ * the perag is not fully initialised and hence not attached to the
+ * buffer. In this case, check against the maximum tree depth.
*/
level = be16_to_cpu(block->bb_level);
switch (cpu_to_be32(block->bb_magic)) {
+ case XFS_ABTB_CRC_MAGIC:
+ if (!xfs_sb_version_hascrc(&mp->m_sb))
+ return false;
+ if (!uuid_equal(&block->bb_u.s.bb_uuid, &mp->m_sb.sb_uuid))
+ return false;
+ if (block->bb_u.s.bb_blkno != cpu_to_be64(bp->b_bn))
+ return false;
+ if (pag &&
+ be32_to_cpu(block->bb_u.s.bb_owner) != pag->pag_agno)
+ return false;
+ /* fall through */
case XFS_ABTB_MAGIC:
- if (pag)
- sblock_ok = level < pag->pagf_levels[XFS_BTNUM_BNOi];
- else
- sblock_ok = level < mp->m_ag_maxlevels;
+ if (pag) {
+ if (level >= pag->pagf_levels[XFS_BTNUM_BNOi])
+ return false;
+ } else if (level >= mp->m_ag_maxlevels)
+ return false;
break;
+ case XFS_ABTC_CRC_MAGIC:
+ if (!xfs_sb_version_hascrc(&mp->m_sb))
+ return false;
+ if (!uuid_equal(&block->bb_u.s.bb_uuid, &mp->m_sb.sb_uuid))
+ return false;
+ if (block->bb_u.s.bb_blkno != cpu_to_be64(bp->b_bn))
+ return false;
+ if (pag &&
+ be32_to_cpu(block->bb_u.s.bb_owner) != pag->pag_agno)
+ return false;
+ /* fall through */
case XFS_ABTC_MAGIC:
- if (pag)
- sblock_ok = level < pag->pagf_levels[XFS_BTNUM_CNTi];
- else
- sblock_ok = level < mp->m_ag_maxlevels;
+ if (pag) {
+ if (level >= pag->pagf_levels[XFS_BTNUM_CNTi])
+ return false;
+ } else if (level >= mp->m_ag_maxlevels)
+ return false;
break;
default:
- sblock_ok = 0;
- break;
+ return false;
}
/* numrecs verification */
- sblock_ok = sblock_ok &&
- be16_to_cpu(block->bb_numrecs) <= mp->m_alloc_mxr[level != 0];
+ if (be16_to_cpu(block->bb_numrecs) > mp->m_alloc_mxr[level != 0])
+ return false;
/* sibling pointer verification */
- sblock_ok = sblock_ok &&
- (block->bb_u.s.bb_leftsib == cpu_to_be32(NULLAGBLOCK) ||
- be32_to_cpu(block->bb_u.s.bb_leftsib) < mp->m_sb.sb_agblocks) &&
- block->bb_u.s.bb_leftsib &&
- (block->bb_u.s.bb_rightsib == cpu_to_be32(NULLAGBLOCK) ||
- be32_to_cpu(block->bb_u.s.bb_rightsib) < mp->m_sb.sb_agblocks) &&
- block->bb_u.s.bb_rightsib;
-
- if (!sblock_ok) {
- trace_xfs_btree_corrupt(bp, _RET_IP_);
- XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, block);
- xfs_buf_ioerror(bp, EFSCORRUPTED);
- }
+ if (!block->bb_u.s.bb_leftsib ||
+ (be32_to_cpu(block->bb_u.s.bb_leftsib) >= mp->m_sb.sb_agblocks &&
+ block->bb_u.s.bb_leftsib != cpu_to_be32(NULLAGBLOCK)))
+ return false;
+ if (!block->bb_u.s.bb_rightsib ||
+ (be32_to_cpu(block->bb_u.s.bb_rightsib) >= mp->m_sb.sb_agblocks &&
+ block->bb_u.s.bb_rightsib != cpu_to_be32(NULLAGBLOCK)))
+ return false;
+
+ return true;
}
static void
xfs_allocbt_read_verify(
struct xfs_buf *bp)
{
- xfs_allocbt_verify(bp);
+ if (!(xfs_btree_sblock_verify_crc(bp) &&
+ xfs_allocbt_verify(bp))) {
+ trace_xfs_btree_corrupt(bp, _RET_IP_);
+ XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW,
+ bp->b_target->bt_mount, bp->b_addr);
+ xfs_buf_ioerror(bp, EFSCORRUPTED);
+ }
}
static void
xfs_allocbt_write_verify(
struct xfs_buf *bp)
{
- xfs_allocbt_verify(bp);
+ if (!xfs_allocbt_verify(bp)) {
+ trace_xfs_btree_corrupt(bp, _RET_IP_);
+ XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW,
+ bp->b_target->bt_mount, bp->b_addr);
+ xfs_buf_ioerror(bp, EFSCORRUPTED);
+ }
+ xfs_btree_sblock_calc_crc(bp);
+
}
const struct xfs_buf_ops xfs_allocbt_buf_ops = {
cur->bc_private.a.agbp = agbp;
cur->bc_private.a.agno = agno;
+ if (xfs_sb_version_hascrc(&mp->m_sb))
+ cur->bc_flags |= XFS_BTREE_CRC_BLOCKS;
+
return cur;
}
return 0;
return dp->i_d.di_forkoff;
}
- dsize = XFS_BMAP_BROOT_SPACE(dp->i_df.if_broot);
+ dsize = XFS_BMAP_BROOT_SPACE(mp, dp->i_df.if_broot);
break;
}
{
struct xfs_btree_block *block = XFS_BUF_TO_BLOCK(bp);
- if (block->bb_magic != cpu_to_be32(XFS_BMAP_MAGIC) ||
- be16_to_cpu(block->bb_level) != level ||
+ if (block->bb_magic != cpu_to_be32(XFS_BMAP_CRC_MAGIC) &&
+ block->bb_magic != cpu_to_be32(XFS_BMAP_MAGIC))
+ return 0;
+
+ if (be16_to_cpu(block->bb_level) != level ||
be16_to_cpu(block->bb_numrecs) == 0 ||
be16_to_cpu(block->bb_numrecs) > mp->m_bmap_dmxr[level != 0])
return 0;
+
return 1;
}
xfs_extnum_t nextents; /* number of file extents */
xfs_bmbt_ptr_t *pp; /* root block address pointer */
+ mp = ip->i_mount;
ifp = XFS_IFORK_PTR(ip, whichfork);
ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS);
* Fill in the root.
*/
block = ifp->if_broot;
- block->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC);
- block->bb_level = cpu_to_be16(1);
- block->bb_numrecs = cpu_to_be16(1);
- block->bb_u.l.bb_leftsib = cpu_to_be64(NULLDFSBNO);
- block->bb_u.l.bb_rightsib = cpu_to_be64(NULLDFSBNO);
+ if (xfs_sb_version_hascrc(&mp->m_sb))
+ xfs_btree_init_block_int(mp, block, XFS_BUF_DADDR_NULL,
+ XFS_BMAP_CRC_MAGIC, 1, 1, ip->i_ino,
+ XFS_BTREE_LONG_PTRS | XFS_BTREE_CRC_BLOCKS);
+ else
+ xfs_btree_init_block_int(mp, block, XFS_BUF_DADDR_NULL,
+ XFS_BMAP_MAGIC, 1, 1, ip->i_ino,
+ XFS_BTREE_LONG_PTRS);
/*
* Need a cursor. Can't allocate until bb_level is filled in.
*/
- mp = ip->i_mount;
cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork);
cur->bc_private.b.firstblock = *firstblock;
cur->bc_private.b.flist = flist;
*/
abp->b_ops = &xfs_bmbt_buf_ops;
ablock = XFS_BUF_TO_BLOCK(abp);
- ablock->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC);
- ablock->bb_level = 0;
- ablock->bb_u.l.bb_leftsib = cpu_to_be64(NULLDFSBNO);
- ablock->bb_u.l.bb_rightsib = cpu_to_be64(NULLDFSBNO);
+ if (xfs_sb_version_hascrc(&mp->m_sb))
+ xfs_btree_init_block_int(mp, ablock, abp->b_bn,
+ XFS_BMAP_CRC_MAGIC, 0, 0, ip->i_ino,
+ XFS_BTREE_LONG_PTRS | XFS_BTREE_CRC_BLOCKS);
+ else
+ xfs_btree_init_block_int(mp, ablock, abp->b_bn,
+ XFS_BMAP_MAGIC, 0, 0, ip->i_ino,
+ XFS_BTREE_LONG_PTRS);
+
arp = XFS_BMBT_REC_ADDR(mp, ablock, 1);
nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
for (cnt = i = 0; i < nextents; i++) {
* Do all this logging at the end so that
* the root is at the right level.
*/
- xfs_btree_log_block(cur, abp, XFS_BB_ALL_BITS);
xfs_btree_log_recs(cur, abp, 1, be16_to_cpu(ablock->bb_numrecs));
+ xfs_btree_log_block(cur, abp, XFS_BB_ALL_BITS);
ASSERT(*curp == NULL);
*curp = cur;
*logflagsp = XFS_ILOG_CORE | xfs_ilog_fbroot(whichfork);
xfs_extlen_t total, /* total blocks needed by transaction */
int *logflagsp, /* inode logging flags */
int whichfork,
- void (*init_fn)(struct xfs_buf *bp,
+ void (*init_fn)(struct xfs_trans *tp,
+ struct xfs_buf *bp,
struct xfs_inode *ip,
struct xfs_ifork *ifp))
{
bp = xfs_btree_get_bufl(args.mp, tp, args.fsbno, 0);
/* initialise the block and copy the data */
- init_fn(bp, ip, ifp);
+ init_fn(tp, bp, ip, ifp);
/* account for the change in fork size and log everything */
xfs_trans_log_buf(tp, bp, 0, ifp->if_bytes - 1);
*/
STATIC void
xfs_bmap_local_to_extents_init_fn(
+ struct xfs_trans *tp,
struct xfs_buf *bp,
struct xfs_inode *ip,
struct xfs_ifork *ifp)
{
bp->b_ops = &xfs_bmbt_buf_ops;
memcpy(bp->b_addr, ifp->if_u1.if_data, ifp->if_bytes);
+ xfs_trans_buf_set_type(tp, bp, XFS_BLF_BTREE_BUF);
}
STATIC void
xfs_symlink_local_to_remote(
+ struct xfs_trans *tp,
struct xfs_buf *bp,
struct xfs_inode *ip,
struct xfs_ifork *ifp)
*
* XXX (dgc): investigate whether directory conversion can use the generic
* formatting callout. It should be possible - it's just a very complex
- * formatter. it would also require passing the transaction through to the init
- * function.
+ * formatter.
*/
STATIC int /* error */
xfs_bmap_add_attrfork_local(
*/
void
xfs_bmdr_to_bmbt(
- struct xfs_mount *mp,
+ struct xfs_inode *ip,
xfs_bmdr_block_t *dblock,
int dblocklen,
struct xfs_btree_block *rblock,
int rblocklen)
{
+ struct xfs_mount *mp = ip->i_mount;
int dmxr;
xfs_bmbt_key_t *fkp;
__be64 *fpp;
xfs_bmbt_key_t *tkp;
__be64 *tpp;
- rblock->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC);
+ if (xfs_sb_version_hascrc(&mp->m_sb))
+ xfs_btree_init_block_int(mp, rblock, XFS_BUF_DADDR_NULL,
+ XFS_BMAP_CRC_MAGIC, 0, 0, ip->i_ino,
+ XFS_BTREE_LONG_PTRS | XFS_BTREE_CRC_BLOCKS);
+ else
+ xfs_btree_init_block_int(mp, rblock, XFS_BUF_DADDR_NULL,
+ XFS_BMAP_MAGIC, 0, 0, ip->i_ino,
+ XFS_BTREE_LONG_PTRS);
+
rblock->bb_level = dblock->bb_level;
ASSERT(be16_to_cpu(rblock->bb_level) > 0);
rblock->bb_numrecs = dblock->bb_numrecs;
- rblock->bb_u.l.bb_leftsib = cpu_to_be64(NULLDFSBNO);
- rblock->bb_u.l.bb_rightsib = cpu_to_be64(NULLDFSBNO);
dmxr = xfs_bmdr_maxrecs(mp, dblocklen, 0);
fkp = XFS_BMDR_KEY_ADDR(dblock, 1);
tkp = XFS_BMBT_KEY_ADDR(mp, rblock, 1);
xfs_bmbt_key_t *tkp;
__be64 *tpp;
- ASSERT(rblock->bb_magic == cpu_to_be32(XFS_BMAP_MAGIC));
+ if (xfs_sb_version_hascrc(&mp->m_sb)) {
+ ASSERT(rblock->bb_magic == cpu_to_be32(XFS_BMAP_CRC_MAGIC));
+ ASSERT(uuid_equal(&rblock->bb_u.l.bb_uuid, &mp->m_sb.sb_uuid));
+ ASSERT(rblock->bb_u.l.bb_blkno ==
+ cpu_to_be64(XFS_BUF_DADDR_NULL));
+ } else
+ ASSERT(rblock->bb_magic == cpu_to_be32(XFS_BMAP_MAGIC));
ASSERT(rblock->bb_u.l.bb_leftsib == cpu_to_be64(NULLDFSBNO));
ASSERT(rblock->bb_u.l.bb_rightsib == cpu_to_be64(NULLDFSBNO));
ASSERT(rblock->bb_level != 0);
cur->bc_rec.b.br_startoff;
}
-static void
+static bool
xfs_bmbt_verify(
struct xfs_buf *bp)
{
struct xfs_mount *mp = bp->b_target->bt_mount;
struct xfs_btree_block *block = XFS_BUF_TO_BLOCK(bp);
unsigned int level;
- int lblock_ok; /* block passes checks */
- /* magic number and level verification.
+ switch (be32_to_cpu(block->bb_magic)) {
+ case XFS_BMAP_CRC_MAGIC:
+ if (!xfs_sb_version_hascrc(&mp->m_sb))
+ return false;
+ if (!uuid_equal(&block->bb_u.l.bb_uuid, &mp->m_sb.sb_uuid))
+ return false;
+ if (block->bb_u.l.bb_blkno != cpu_to_be64(bp->b_bn))
+ return false;
+ /*
+ * XXX: need a better way of verifying the owner here. Right now
+ * just make sure there has been one set.
+ */
+ if (be64_to_cpu(block->bb_u.l.bb_owner) == 0)
+ return false;
+ /* fall through */
+ case XFS_BMAP_MAGIC:
+ break;
+ default:
+ return false;
+ }
+
+ /*
+ * numrecs and level verification.
*
- * We don't know waht fork we belong to, so just verify that the level
+ * We don't know what fork we belong to, so just verify that the level
* is less than the maximum of the two. Later checks will be more
* precise.
*/
level = be16_to_cpu(block->bb_level);
- lblock_ok = block->bb_magic == cpu_to_be32(XFS_BMAP_MAGIC) &&
- level < MAX(mp->m_bm_maxlevels[0], mp->m_bm_maxlevels[1]);
-
- /* numrecs verification */
- lblock_ok = lblock_ok &&
- be16_to_cpu(block->bb_numrecs) <= mp->m_bmap_dmxr[level != 0];
+ if (level > MAX(mp->m_bm_maxlevels[0], mp->m_bm_maxlevels[1]))
+ return false;
+ if (be16_to_cpu(block->bb_numrecs) > mp->m_bmap_dmxr[level != 0])
+ return false;
/* sibling pointer verification */
- lblock_ok = lblock_ok &&
- block->bb_u.l.bb_leftsib &&
- (block->bb_u.l.bb_leftsib == cpu_to_be64(NULLDFSBNO) ||
- XFS_FSB_SANITY_CHECK(mp,
- be64_to_cpu(block->bb_u.l.bb_leftsib))) &&
- block->bb_u.l.bb_rightsib &&
- (block->bb_u.l.bb_rightsib == cpu_to_be64(NULLDFSBNO) ||
- XFS_FSB_SANITY_CHECK(mp,
- be64_to_cpu(block->bb_u.l.bb_rightsib)));
-
- if (!lblock_ok) {
- trace_xfs_btree_corrupt(bp, _RET_IP_);
- XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, block);
- xfs_buf_ioerror(bp, EFSCORRUPTED);
- }
+ if (!block->bb_u.l.bb_leftsib ||
+ (block->bb_u.l.bb_leftsib != cpu_to_be64(NULLDFSBNO) &&
+ !XFS_FSB_SANITY_CHECK(mp, be64_to_cpu(block->bb_u.l.bb_leftsib))))
+ return false;
+ if (!block->bb_u.l.bb_rightsib ||
+ (block->bb_u.l.bb_rightsib != cpu_to_be64(NULLDFSBNO) &&
+ !XFS_FSB_SANITY_CHECK(mp, be64_to_cpu(block->bb_u.l.bb_rightsib))))
+ return false;
+
+ return true;
}
static void
struct xfs_buf *bp)
{
xfs_bmbt_verify(bp);
+ if (!(xfs_btree_lblock_verify_crc(bp) &&
+ xfs_bmbt_verify(bp))) {
+ trace_xfs_btree_corrupt(bp, _RET_IP_);
+ XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW,
+ bp->b_target->bt_mount, bp->b_addr);
+ xfs_buf_ioerror(bp, EFSCORRUPTED);
+ }
+
}
static void
xfs_bmbt_write_verify(
struct xfs_buf *bp)
{
- xfs_bmbt_verify(bp);
+ if (!xfs_bmbt_verify(bp)) {
+ xfs_warn(bp->b_target->bt_mount, "bmbt daddr 0x%llx failed", bp->b_bn);
+ trace_xfs_btree_corrupt(bp, _RET_IP_);
+ XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW,
+ bp->b_target->bt_mount, bp->b_addr);
+ xfs_buf_ioerror(bp, EFSCORRUPTED);
+ return;
+ }
+ xfs_btree_lblock_calc_crc(bp);
}
const struct xfs_buf_ops xfs_bmbt_buf_ops = {
cur->bc_ops = &xfs_bmbt_ops;
cur->bc_flags = XFS_BTREE_LONG_PTRS | XFS_BTREE_ROOT_IN_INODE;
+ if (xfs_sb_version_hascrc(&mp->m_sb))
+ cur->bc_flags |= XFS_BTREE_CRC_BLOCKS;
cur->bc_private.b.forksize = XFS_IFORK_SIZE(ip, whichfork);
cur->bc_private.b.ip = ip;
/*
* Btree magic numbers.
*/
-const __uint32_t xfs_magics[XFS_BTNUM_MAX] = {
- XFS_ABTB_MAGIC, XFS_ABTC_MAGIC, XFS_BMAP_MAGIC, XFS_IBT_MAGIC
+static const __uint32_t xfs_magics[2][XFS_BTNUM_MAX] = {
+ { XFS_ABTB_MAGIC, XFS_ABTC_MAGIC, XFS_BMAP_MAGIC, XFS_IBT_MAGIC },
+ { XFS_ABTB_CRC_MAGIC, XFS_ABTC_CRC_MAGIC,
+ XFS_BMAP_CRC_MAGIC, XFS_IBT_CRC_MAGIC }
};
+#define xfs_btree_magic(cur) \
+ xfs_magics[!!((cur)->bc_flags & XFS_BTREE_CRC_BLOCKS)][cur->bc_btnum]
STATIC int /* error (0 or EFSCORRUPTED) */
int level, /* level of the btree block */
struct xfs_buf *bp) /* buffer for block, if any */
{
- int lblock_ok; /* block passes checks */
+ int lblock_ok = 1; /* block passes checks */
struct xfs_mount *mp; /* file system mount point */
mp = cur->bc_mp;
- lblock_ok =
- be32_to_cpu(block->bb_magic) == xfs_magics[cur->bc_btnum] &&
+
+ if (xfs_sb_version_hascrc(&mp->m_sb)) {
+ lblock_ok = lblock_ok &&
+ uuid_equal(&block->bb_u.l.bb_uuid, &mp->m_sb.sb_uuid) &&
+ block->bb_u.l.bb_blkno == cpu_to_be64(
+ bp ? bp->b_bn : XFS_BUF_DADDR_NULL);
+ }
+
+ lblock_ok = lblock_ok &&
+ be32_to_cpu(block->bb_magic) == xfs_btree_magic(cur) &&
be16_to_cpu(block->bb_level) == level &&
be16_to_cpu(block->bb_numrecs) <=
cur->bc_ops->get_maxrecs(cur, level) &&
block->bb_u.l.bb_leftsib &&
(block->bb_u.l.bb_leftsib == cpu_to_be64(NULLDFSBNO) ||
XFS_FSB_SANITY_CHECK(mp,
- be64_to_cpu(block->bb_u.l.bb_leftsib))) &&
+ be64_to_cpu(block->bb_u.l.bb_leftsib))) &&
block->bb_u.l.bb_rightsib &&
(block->bb_u.l.bb_rightsib == cpu_to_be64(NULLDFSBNO) ||
XFS_FSB_SANITY_CHECK(mp,
- be64_to_cpu(block->bb_u.l.bb_rightsib)));
+ be64_to_cpu(block->bb_u.l.bb_rightsib)));
+
if (unlikely(XFS_TEST_ERROR(!lblock_ok, mp,
XFS_ERRTAG_BTREE_CHECK_LBLOCK,
XFS_RANDOM_BTREE_CHECK_LBLOCK))) {
if (bp)
trace_xfs_btree_corrupt(bp, _RET_IP_);
- XFS_ERROR_REPORT("xfs_btree_check_lblock", XFS_ERRLEVEL_LOW,
- mp);
+ XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, mp);
return XFS_ERROR(EFSCORRUPTED);
}
return 0;
int level, /* level of the btree block */
struct xfs_buf *bp) /* buffer containing block */
{
+ struct xfs_mount *mp; /* file system mount point */
struct xfs_buf *agbp; /* buffer for ag. freespace struct */
struct xfs_agf *agf; /* ag. freespace structure */
xfs_agblock_t agflen; /* native ag. freespace length */
- int sblock_ok; /* block passes checks */
+ int sblock_ok = 1; /* block passes checks */
+ mp = cur->bc_mp;
agbp = cur->bc_private.a.agbp;
agf = XFS_BUF_TO_AGF(agbp);
agflen = be32_to_cpu(agf->agf_length);
- sblock_ok =
- be32_to_cpu(block->bb_magic) == xfs_magics[cur->bc_btnum] &&
+
+ if (xfs_sb_version_hascrc(&mp->m_sb)) {
+ sblock_ok = sblock_ok &&
+ uuid_equal(&block->bb_u.s.bb_uuid, &mp->m_sb.sb_uuid) &&
+ block->bb_u.s.bb_blkno == cpu_to_be64(
+ bp ? bp->b_bn : XFS_BUF_DADDR_NULL);
+ }
+
+ sblock_ok = sblock_ok &&
+ be32_to_cpu(block->bb_magic) == xfs_btree_magic(cur) &&
be16_to_cpu(block->bb_level) == level &&
be16_to_cpu(block->bb_numrecs) <=
cur->bc_ops->get_maxrecs(cur, level) &&
(block->bb_u.s.bb_rightsib == cpu_to_be32(NULLAGBLOCK) ||
be32_to_cpu(block->bb_u.s.bb_rightsib) < agflen) &&
block->bb_u.s.bb_rightsib;
- if (unlikely(XFS_TEST_ERROR(!sblock_ok, cur->bc_mp,
+
+ if (unlikely(XFS_TEST_ERROR(!sblock_ok, mp,
XFS_ERRTAG_BTREE_CHECK_SBLOCK,
XFS_RANDOM_BTREE_CHECK_SBLOCK))) {
if (bp)
trace_xfs_btree_corrupt(bp, _RET_IP_);
- XFS_CORRUPTION_ERROR("xfs_btree_check_sblock",
- XFS_ERRLEVEL_LOW, cur->bc_mp, block);
+ XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, mp);
return XFS_ERROR(EFSCORRUPTED);
}
return 0;
}
#endif
+/*
+ * Calculate CRC on the whole btree block and stuff it into the
+ * long-form btree header.
+ *
+ * Prior to calculting the CRC, pull the LSN out of the buffer log item and put
+ * it into the buffer so recovery knows what the last modifcation was that made
+ * it to disk.
+ */
+void
+xfs_btree_lblock_calc_crc(
+ struct xfs_buf *bp)
+{
+ struct xfs_btree_block *block = XFS_BUF_TO_BLOCK(bp);
+ struct xfs_buf_log_item *bip = bp->b_fspriv;
+
+ if (!xfs_sb_version_hascrc(&bp->b_target->bt_mount->m_sb))
+ return;
+ if (bip)
+ block->bb_u.l.bb_lsn = cpu_to_be64(bip->bli_item.li_lsn);
+ xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length),
+ XFS_BTREE_LBLOCK_CRC_OFF);
+}
+
+bool
+xfs_btree_lblock_verify_crc(
+ struct xfs_buf *bp)
+{
+ if (xfs_sb_version_hascrc(&bp->b_target->bt_mount->m_sb))
+ return xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length),
+ XFS_BTREE_LBLOCK_CRC_OFF);
+ return true;
+}
+
+/*
+ * Calculate CRC on the whole btree block and stuff it into the
+ * short-form btree header.
+ *
+ * Prior to calculting the CRC, pull the LSN out of the buffer log item and put
+ * it into the buffer so recovery knows what the last modifcation was that made
+ * it to disk.
+ */
+void
+xfs_btree_sblock_calc_crc(
+ struct xfs_buf *bp)
+{
+ struct xfs_btree_block *block = XFS_BUF_TO_BLOCK(bp);
+ struct xfs_buf_log_item *bip = bp->b_fspriv;
+
+ if (!xfs_sb_version_hascrc(&bp->b_target->bt_mount->m_sb))
+ return;
+ if (bip)
+ block->bb_u.s.bb_lsn = cpu_to_be64(bip->bli_item.li_lsn);
+ xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length),
+ XFS_BTREE_SBLOCK_CRC_OFF);
+}
+
+bool
+xfs_btree_sblock_verify_crc(
+ struct xfs_buf *bp)
+{
+ if (xfs_sb_version_hascrc(&bp->b_target->bt_mount->m_sb))
+ return xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length),
+ XFS_BTREE_SBLOCK_CRC_OFF);
+ return true;
+}
+
/*
* Delete the btree cursor.
*/
*ncur = NULL;
return error;
}
- new->bc_bufs[i] = bp;
- ASSERT(!xfs_buf_geterror(bp));
- } else
- new->bc_bufs[i] = NULL;
+ }
+ new->bc_bufs[i] = bp;
}
*ncur = new;
return 0;
*/
static inline size_t xfs_btree_block_len(struct xfs_btree_cur *cur)
{
- return (cur->bc_flags & XFS_BTREE_LONG_PTRS) ?
- XFS_BTREE_LBLOCK_LEN :
- XFS_BTREE_SBLOCK_LEN;
+ size_t len;
+
+ if (cur->bc_flags & XFS_BTREE_LONG_PTRS)
+ len = XFS_BTREE_LBLOCK_LEN;
+ else
+ len = XFS_BTREE_SBLOCK_LEN;
+
+ if (cur->bc_flags & XFS_BTREE_CRC_BLOCKS)
+ len += XFS_BTREE_CRCBLOCK_ADD;
+
+ return len;
}
/*
}
}
+void
+xfs_btree_init_block_int(
+ struct xfs_mount *mp,
+ struct xfs_btree_block *buf,
+ xfs_daddr_t blkno,
+ __u32 magic,
+ __u16 level,
+ __u16 numrecs,
+ __u64 owner,
+ unsigned int flags)
+{
+ buf->bb_magic = cpu_to_be32(magic);
+ buf->bb_level = cpu_to_be16(level);
+ buf->bb_numrecs = cpu_to_be16(numrecs);
+
+ if (flags & XFS_BTREE_LONG_PTRS) {
+ buf->bb_u.l.bb_leftsib = cpu_to_be64(NULLDFSBNO);
+ buf->bb_u.l.bb_rightsib = cpu_to_be64(NULLDFSBNO);
+ if (flags & XFS_BTREE_CRC_BLOCKS) {
+ buf->bb_u.l.bb_blkno = cpu_to_be64(blkno);
+ buf->bb_u.l.bb_owner = cpu_to_be64(owner);
+ uuid_copy(&buf->bb_u.l.bb_uuid, &mp->m_sb.sb_uuid);
+ buf->bb_u.l.bb_pad = 0;
+ }
+ } else {
+ /* owner is a 32 bit value on short blocks */
+ __u32 __owner = (__u32)owner;
+
+ buf->bb_u.s.bb_leftsib = cpu_to_be32(NULLAGBLOCK);
+ buf->bb_u.s.bb_rightsib = cpu_to_be32(NULLAGBLOCK);
+ if (flags & XFS_BTREE_CRC_BLOCKS) {
+ buf->bb_u.s.bb_blkno = cpu_to_be64(blkno);
+ buf->bb_u.s.bb_owner = cpu_to_be32(__owner);
+ uuid_copy(&buf->bb_u.s.bb_uuid, &mp->m_sb.sb_uuid);
+ }
+ }
+}
+
void
xfs_btree_init_block(
struct xfs_mount *mp,
__u32 magic,
__u16 level,
__u16 numrecs,
+ __u64 owner,
unsigned int flags)
{
- struct xfs_btree_block *new = XFS_BUF_TO_BLOCK(bp);
-
- new->bb_magic = cpu_to_be32(magic);
- new->bb_level = cpu_to_be16(level);
- new->bb_numrecs = cpu_to_be16(numrecs);
-
- if (flags & XFS_BTREE_LONG_PTRS) {
- new->bb_u.l.bb_leftsib = cpu_to_be64(NULLDFSBNO);
- new->bb_u.l.bb_rightsib = cpu_to_be64(NULLDFSBNO);
- } else {
- new->bb_u.s.bb_leftsib = cpu_to_be32(NULLAGBLOCK);
- new->bb_u.s.bb_rightsib = cpu_to_be32(NULLAGBLOCK);
- }
+ xfs_btree_init_block_int(mp, XFS_BUF_TO_BLOCK(bp), bp->b_bn,
+ magic, level, numrecs, owner, flags);
}
STATIC void
xfs_btree_init_block_cur(
struct xfs_btree_cur *cur,
+ struct xfs_buf *bp,
int level,
- int numrecs,
- struct xfs_buf *bp)
+ int numrecs)
{
- xfs_btree_init_block(cur->bc_mp, bp, xfs_magics[cur->bc_btnum],
- level, numrecs, cur->bc_flags);
+ __u64 owner;
+
+ /*
+ * we can pull the owner from the cursor right now as the different
+ * owners align directly with the pointer size of the btree. This may
+ * change in future, but is safe for current users of the generic btree
+ * code.
+ */
+ if (cur->bc_flags & XFS_BTREE_LONG_PTRS)
+ owner = cur->bc_private.b.ip->i_ino;
+ else
+ owner = cur->bc_private.a.agno;
+
+ xfs_btree_init_block_int(cur->bc_mp, XFS_BUF_TO_BLOCK(bp), bp->b_bn,
+ xfs_btree_magic(cur), level, numrecs,
+ owner, cur->bc_flags);
}
/*
* Return true if ptr is the last record in the btree and
- * we need to track updateѕ to this record. The decision
+ * we need to track updates to this record. The decision
* will be further refined in the update_lastrec method.
*/
STATIC int
XFS_BTREE_TRACE_ARGBII(cur, bp, first, last);
if (bp) {
+ xfs_trans_buf_set_type(cur->bc_tp, bp, XFS_BLF_BTREE_BUF);
xfs_trans_log_buf(cur->bc_tp, bp,
xfs_btree_key_offset(cur, first),
xfs_btree_key_offset(cur, last + 1) - 1);
XFS_BTREE_TRACE_CURSOR(cur, XBT_ENTRY);
XFS_BTREE_TRACE_ARGBII(cur, bp, first, last);
+ xfs_trans_buf_set_type(cur->bc_tp, bp, XFS_BLF_BTREE_BUF);
xfs_trans_log_buf(cur->bc_tp, bp,
xfs_btree_rec_offset(cur, first),
xfs_btree_rec_offset(cur, last + 1) - 1);
struct xfs_btree_block *block = XFS_BUF_TO_BLOCK(bp);
int level = xfs_btree_get_level(block);
+ xfs_trans_buf_set_type(cur->bc_tp, bp, XFS_BLF_BTREE_BUF);
xfs_trans_log_buf(cur->bc_tp, bp,
xfs_btree_ptr_offset(cur, first, level),
xfs_btree_ptr_offset(cur, last + 1, level) - 1);
offsetof(struct xfs_btree_block, bb_numrecs),
offsetof(struct xfs_btree_block, bb_u.s.bb_leftsib),
offsetof(struct xfs_btree_block, bb_u.s.bb_rightsib),
- XFS_BTREE_SBLOCK_LEN
+ offsetof(struct xfs_btree_block, bb_u.s.bb_blkno),
+ offsetof(struct xfs_btree_block, bb_u.s.bb_lsn),
+ offsetof(struct xfs_btree_block, bb_u.s.bb_uuid),
+ offsetof(struct xfs_btree_block, bb_u.s.bb_owner),
+ offsetof(struct xfs_btree_block, bb_u.s.bb_crc),
+ XFS_BTREE_SBLOCK_LEN + XFS_BTREE_CRCBLOCK_ADD
};
static const short loffsets[] = { /* table of offsets (long) */
offsetof(struct xfs_btree_block, bb_magic),
offsetof(struct xfs_btree_block, bb_numrecs),
offsetof(struct xfs_btree_block, bb_u.l.bb_leftsib),
offsetof(struct xfs_btree_block, bb_u.l.bb_rightsib),
- XFS_BTREE_LBLOCK_LEN
+ offsetof(struct xfs_btree_block, bb_u.l.bb_blkno),
+ offsetof(struct xfs_btree_block, bb_u.l.bb_lsn),
+ offsetof(struct xfs_btree_block, bb_u.l.bb_uuid),
+ offsetof(struct xfs_btree_block, bb_u.l.bb_owner),
+ offsetof(struct xfs_btree_block, bb_u.l.bb_crc),
+ offsetof(struct xfs_btree_block, bb_u.l.bb_pad),
+ XFS_BTREE_LBLOCK_LEN + XFS_BTREE_CRCBLOCK_ADD
};
XFS_BTREE_TRACE_CURSOR(cur, XBT_ENTRY);
XFS_BTREE_TRACE_ARGBI(cur, bp, fields);
if (bp) {
+ int nbits;
+
+ if (cur->bc_flags & XFS_BTREE_CRC_BLOCKS) {
+ /*
+ * We don't log the CRC when updating a btree
+ * block but instead recreate it during log
+ * recovery. As the log buffers have checksums
+ * of their this is safe and avoids logging a crc
+ * update in a lot of places.
+ */
+ if (fields == XFS_BB_ALL_BITS)
+ fields = XFS_BB_ALL_BITS_CRC;
+ nbits = XFS_BB_NUM_BITS_CRC;
+ } else {
+ nbits = XFS_BB_NUM_BITS;
+ }
xfs_btree_offsets(fields,
(cur->bc_flags & XFS_BTREE_LONG_PTRS) ?
loffsets : soffsets,
- XFS_BB_NUM_BITS, &first, &last);
+ nbits, &first, &last);
+ xfs_trans_buf_set_type(cur->bc_tp, bp, XFS_BLF_BTREE_BUF);
xfs_trans_log_buf(cur->bc_tp, bp, first, last);
} else {
xfs_trans_log_inode(cur->bc_tp, cur->bc_private.b.ip,
goto error0;
/* Fill in the btree header for the new right block. */
- xfs_btree_init_block_cur(cur, xfs_btree_get_level(left), 0, rbp);
+ xfs_btree_init_block_cur(cur, rbp, xfs_btree_get_level(left), 0);
/*
* Split the entries between the old and the new block evenly.
nptr = 2;
}
/* Fill in the new block's btree header and log it. */
- xfs_btree_init_block_cur(cur, cur->bc_nlevels, 2, nbp);
+ xfs_btree_init_block_cur(cur, nbp, cur->bc_nlevels, 2);
xfs_btree_log_block(cur, nbp, XFS_BB_ALL_BITS);
ASSERT(!xfs_btree_ptr_is_null(cur, &lptr) &&
!xfs_btree_ptr_is_null(cur, &rptr));
cur->bc_rec.i.ir_startino;
}
-void
+static int
xfs_inobt_verify(
struct xfs_buf *bp)
{
struct xfs_mount *mp = bp->b_target->bt_mount;
struct xfs_btree_block *block = XFS_BUF_TO_BLOCK(bp);
+ struct xfs_perag *pag = bp->b_pag;
unsigned int level;
- int sblock_ok; /* block passes checks */
- /* magic number and level verification */
- level = be16_to_cpu(block->bb_level);
- sblock_ok = block->bb_magic == cpu_to_be32(XFS_IBT_MAGIC) &&
- level < mp->m_in_maxlevels;
+ /*
+ * During growfs operations, we can't verify the exact owner as the
+ * perag is not fully initialised and hence not attached to the buffer.
+ */
+ switch (be32_to_cpu(block->bb_magic)) {
+ case XFS_IBT_CRC_MAGIC:
+ if (!xfs_sb_version_hascrc(&mp->m_sb))
+ return false;
+ if (!uuid_equal(&block->bb_u.s.bb_uuid, &mp->m_sb.sb_uuid))
+ return false;
+ if (block->bb_u.s.bb_blkno != cpu_to_be64(bp->b_bn))
+ return false;
+ if (pag &&
+ be32_to_cpu(block->bb_u.s.bb_owner) != pag->pag_agno)
+ return false;
+ /* fall through */
+ case XFS_IBT_MAGIC:
+ break;
+ default:
+ return 0;
+ }
- /* numrecs verification */
- sblock_ok = sblock_ok &&
- be16_to_cpu(block->bb_numrecs) <= mp->m_inobt_mxr[level != 0];
+ /* numrecs and level verification */
+ level = be16_to_cpu(block->bb_level);
+ if (level >= mp->m_in_maxlevels)
+ return false;
+ if (be16_to_cpu(block->bb_numrecs) > mp->m_inobt_mxr[level != 0])
+ return false;
/* sibling pointer verification */
- sblock_ok = sblock_ok &&
- (block->bb_u.s.bb_leftsib == cpu_to_be32(NULLAGBLOCK) ||
- be32_to_cpu(block->bb_u.s.bb_leftsib) < mp->m_sb.sb_agblocks) &&
- block->bb_u.s.bb_leftsib &&
- (block->bb_u.s.bb_rightsib == cpu_to_be32(NULLAGBLOCK) ||
- be32_to_cpu(block->bb_u.s.bb_rightsib) < mp->m_sb.sb_agblocks) &&
- block->bb_u.s.bb_rightsib;
-
- if (!sblock_ok) {
- trace_xfs_btree_corrupt(bp, _RET_IP_);
- XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, block);
- xfs_buf_ioerror(bp, EFSCORRUPTED);
- }
+ if (!block->bb_u.s.bb_leftsib ||
+ (be32_to_cpu(block->bb_u.s.bb_leftsib) >= mp->m_sb.sb_agblocks &&
+ block->bb_u.s.bb_leftsib != cpu_to_be32(NULLAGBLOCK)))
+ return false;
+ if (!block->bb_u.s.bb_rightsib ||
+ (be32_to_cpu(block->bb_u.s.bb_rightsib) >= mp->m_sb.sb_agblocks &&
+ block->bb_u.s.bb_rightsib != cpu_to_be32(NULLAGBLOCK)))
+ return false;
+
+ return true;
}
static void
xfs_inobt_read_verify(
struct xfs_buf *bp)
{
- xfs_inobt_verify(bp);
+ if (!(xfs_btree_sblock_verify_crc(bp) &&
+ xfs_inobt_verify(bp))) {
+ trace_xfs_btree_corrupt(bp, _RET_IP_);
+ XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW,
+ bp->b_target->bt_mount, bp->b_addr);
+ xfs_buf_ioerror(bp, EFSCORRUPTED);
+ }
}
static void
xfs_inobt_write_verify(
struct xfs_buf *bp)
{
- xfs_inobt_verify(bp);
+ if (!xfs_inobt_verify(bp)) {
+ trace_xfs_btree_corrupt(bp, _RET_IP_);
+ XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW,
+ bp->b_target->bt_mount, bp->b_addr);
+ xfs_buf_ioerror(bp, EFSCORRUPTED);
+ }
+ xfs_btree_sblock_calc_crc(bp);
+
}
const struct xfs_buf_ops xfs_inobt_buf_ops = {
cur->bc_blocklog = mp->m_sb.sb_blocklog;
cur->bc_ops = &xfs_inobt_ops;
+ if (xfs_sb_version_hascrc(&mp->m_sb))
+ cur->bc_flags |= XFS_BTREE_CRC_BLOCKS;
cur->bc_private.a.agbp = agbp;
cur->bc_private.a.agno = agno;
xfs_dinode_t *dip,
int whichfork)
{
+ struct xfs_mount *mp = ip->i_mount;
xfs_bmdr_block_t *dfp;
xfs_ifork_t *ifp;
/* REFERENCED */
ifp = XFS_IFORK_PTR(ip, whichfork);
dfp = (xfs_bmdr_block_t *)XFS_DFORK_PTR(dip, whichfork);
- size = XFS_BMAP_BROOT_SPACE(dfp);
+ size = XFS_BMAP_BROOT_SPACE(mp, dfp);
nrecs = be16_to_cpu(dfp->bb_numrecs);
/*
* blocks.
*/
if (unlikely(XFS_IFORK_NEXTENTS(ip, whichfork) <=
- XFS_IFORK_MAXEXT(ip, whichfork) ||
+ XFS_IFORK_MAXEXT(ip, whichfork) ||
XFS_BMDR_SPACE_CALC(nrecs) >
- XFS_DFORK_SIZE(dip, ip->i_mount, whichfork) ||
+ XFS_DFORK_SIZE(dip, mp, whichfork) ||
XFS_IFORK_NEXTENTS(ip, whichfork) > ip->i_d.di_nblocks)) {
- xfs_warn(ip->i_mount, "corrupt inode %Lu (btree).",
- (unsigned long long) ip->i_ino);
+ xfs_warn(mp, "corrupt inode %Lu (btree).",
+ (unsigned long long) ip->i_ino);
XFS_CORRUPTION_ERROR("xfs_iformat_btree", XFS_ERRLEVEL_LOW,
- ip->i_mount, dip);
+ mp, dip);
return XFS_ERROR(EFSCORRUPTED);
}
* Copy and convert from the on-disk structure
* to the in-memory structure.
*/
- xfs_bmdr_to_bmbt(ip->i_mount, dfp,
- XFS_DFORK_SIZE(dip, ip->i_mount, whichfork),
+ xfs_bmdr_to_bmbt(ip, dfp, XFS_DFORK_SIZE(dip, ip->i_mount, whichfork),
ifp->if_broot, size);
ifp->if_flags &= ~XFS_IFEXTENTS;
ifp->if_flags |= XFS_IFBROOT;
* allocate it now and get out.
*/
if (ifp->if_broot_bytes == 0) {
- new_size = (size_t)XFS_BMAP_BROOT_SPACE_CALC(rec_diff);
+ new_size = XFS_BMAP_BROOT_SPACE_CALC(mp, rec_diff);
ifp->if_broot = kmem_alloc(new_size, KM_SLEEP | KM_NOFS);
ifp->if_broot_bytes = (int)new_size;
return;
*/
cur_max = xfs_bmbt_maxrecs(mp, ifp->if_broot_bytes, 0);
new_max = cur_max + rec_diff;
- new_size = (size_t)XFS_BMAP_BROOT_SPACE_CALC(new_max);
+ new_size = XFS_BMAP_BROOT_SPACE_CALC(mp, new_max);
ifp->if_broot = kmem_realloc(ifp->if_broot, new_size,
- (size_t)XFS_BMAP_BROOT_SPACE_CALC(cur_max), /* old size */
+ XFS_BMAP_BROOT_SPACE_CALC(mp, cur_max),
KM_SLEEP | KM_NOFS);
op = (char *)XFS_BMAP_BROOT_PTR_ADDR(mp, ifp->if_broot, 1,
ifp->if_broot_bytes);
(int)new_size);
ifp->if_broot_bytes = (int)new_size;
ASSERT(ifp->if_broot_bytes <=
- XFS_IFORK_SIZE(ip, whichfork) + XFS_BROOT_SIZE_ADJ);
+ XFS_IFORK_SIZE(ip, whichfork) + XFS_BROOT_SIZE_ADJ(ip));
memmove(np, op, cur_max * (uint)sizeof(xfs_dfsbno_t));
return;
}
new_max = cur_max + rec_diff;
ASSERT(new_max >= 0);
if (new_max > 0)
- new_size = (size_t)XFS_BMAP_BROOT_SPACE_CALC(new_max);
+ new_size = XFS_BMAP_BROOT_SPACE_CALC(mp, new_max);
else
new_size = 0;
if (new_size > 0) {
/*
* First copy over the btree block header.
*/
- memcpy(new_broot, ifp->if_broot, XFS_BTREE_LBLOCK_LEN);
+ memcpy(new_broot, ifp->if_broot,
+ XFS_BMBT_BLOCK_LEN(ip->i_mount));
} else {
new_broot = NULL;
ifp->if_flags &= ~XFS_IFBROOT;
ifp->if_broot = new_broot;
ifp->if_broot_bytes = (int)new_size;
ASSERT(ifp->if_broot_bytes <=
- XFS_IFORK_SIZE(ip, whichfork) + XFS_BROOT_SIZE_ADJ);
+ XFS_IFORK_SIZE(ip, whichfork) + XFS_BROOT_SIZE_ADJ(ip));
return;
}
ASSERT(ifp->if_broot != NULL);
ASSERT(ifp->if_broot_bytes <=
(XFS_IFORK_SIZE(ip, whichfork) +
- XFS_BROOT_SIZE_ADJ));
+ XFS_BROOT_SIZE_ADJ(ip)));
xfs_bmbt_to_bmdr(mp, ifp->if_broot, ifp->if_broot_bytes,
(xfs_bmdr_block_t *)cp,
XFS_DFORK_SIZE(dip, mp, whichfork));
* Only check the in progress field for the primary superblock as
* mkfs.xfs doesn't clear it from secondary superblocks.
*/
- error = xfs_mount_validate_sb(mp, &sb, bp->b_blkno == XFS_SB_DADDR);
+ error = xfs_mount_validate_sb(mp, &sb, bp->b_bn == XFS_SB_DADDR);
if (error)
xfs_buf_ioerror(bp, error);
}
LTCOMMAND = xfs_mdrestore
CFILES = xfs_mdrestore.c
-LLDLIBS = $(LIBXFS) $(LIBRT) $(LIBPTHREAD)
+LLDLIBS = $(LIBXFS) $(LIBRT) $(LIBPTHREAD) $(LIBUUID)
LTDEPENDENCIES = $(LIBXFS)
LLDFLAGS = -static
projects / thirdparty / xfsprogs-dev.git / commitdiff
