From 517c22207b045993a6529e1f8684095adaae9cf3 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Wed, 24 Apr 2013 18:58:55 +1000 Subject: xfs: add CRCs to attr leaf blocks Signed-off-by: Dave Chinner Reviewed-by: Ben Myers Signed-off-by: Ben Myers --- fs/xfs/xfs_attr.c | 125 ++++++++++++++++++++++++++++++------------------------ 1 file changed, 69 insertions(+), 56 deletions(-) (limited to 'fs/xfs/xfs_attr.c') diff --git a/fs/xfs/xfs_attr.c b/fs/xfs/xfs_attr.c index 7afef2810e4..e7068754159 100644 --- a/fs/xfs/xfs_attr.c +++ b/fs/xfs/xfs_attr.c @@ -819,7 +819,7 @@ xfs_attr_inactive(xfs_inode_t *dp) error = 0; goto out; } - error = xfs_attr_root_inactive(&trans, dp); + error = xfs_attr3_root_inactive(&trans, dp); if (error) goto out; @@ -905,7 +905,7 @@ xfs_attr_leaf_addname(xfs_da_args_t *args) */ dp = args->dp; args->blkno = 0; - error = xfs_attr_leaf_read(args->trans, args->dp, args->blkno, -1, &bp); + error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno, -1, &bp); if (error) return error; @@ -913,14 +913,14 @@ xfs_attr_leaf_addname(xfs_da_args_t *args) * Look up the given attribute in the leaf block. Figure out if * the given flags produce an error or call for an atomic rename. */ - retval = xfs_attr_leaf_lookup_int(bp, args); + retval = xfs_attr3_leaf_lookup_int(bp, args); if ((args->flags & ATTR_REPLACE) && (retval == ENOATTR)) { xfs_trans_brelse(args->trans, bp); - return(retval); + return retval; } else if (retval == EEXIST) { if (args->flags & ATTR_CREATE) { /* pure create op */ xfs_trans_brelse(args->trans, bp); - return(retval); + return retval; } trace_xfs_attr_leaf_replace(args); @@ -936,7 +936,7 @@ xfs_attr_leaf_addname(xfs_da_args_t *args) * Add the attribute to the leaf block, transitioning to a Btree * if required. */ - retval = xfs_attr_leaf_add(bp, args); + retval = xfs_attr3_leaf_add(bp, args); if (retval == ENOSPC) { /* * Promote the attribute list to the Btree format, then @@ -944,7 +944,7 @@ xfs_attr_leaf_addname(xfs_da_args_t *args) * can manage its own transactions. */ xfs_bmap_init(args->flist, args->firstblock); - error = xfs_attr_leaf_to_node(args); + error = xfs_attr3_leaf_to_node(args); if (!error) { error = xfs_bmap_finish(&args->trans, args->flist, &committed); @@ -1009,7 +1009,7 @@ xfs_attr_leaf_addname(xfs_da_args_t *args) * In a separate transaction, set the incomplete flag on the * "old" attr and clear the incomplete flag on the "new" attr. */ - error = xfs_attr_leaf_flipflags(args); + error = xfs_attr3_leaf_flipflags(args); if (error) return(error); @@ -1031,19 +1031,19 @@ xfs_attr_leaf_addname(xfs_da_args_t *args) * Read in the block containing the "old" attr, then * remove the "old" attr from that block (neat, huh!) */ - error = xfs_attr_leaf_read(args->trans, args->dp, args->blkno, + error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno, -1, &bp); if (error) return error; - xfs_attr_leaf_remove(bp, args); + xfs_attr3_leaf_remove(bp, args); /* * If the result is small enough, shrink it all into the inode. */ if ((forkoff = xfs_attr_shortform_allfit(bp, dp))) { xfs_bmap_init(args->flist, args->firstblock); - error = xfs_attr_leaf_to_shortform(bp, args, forkoff); + error = xfs_attr3_leaf_to_shortform(bp, args, forkoff); /* bp is gone due to xfs_da_shrink_inode */ if (!error) { error = xfs_bmap_finish(&args->trans, @@ -1075,9 +1075,9 @@ xfs_attr_leaf_addname(xfs_da_args_t *args) /* * Added a "remote" value, just clear the incomplete flag. */ - error = xfs_attr_leaf_clearflag(args); + error = xfs_attr3_leaf_clearflag(args); } - return(error); + return error; } /* @@ -1100,24 +1100,24 @@ xfs_attr_leaf_removename(xfs_da_args_t *args) */ dp = args->dp; args->blkno = 0; - error = xfs_attr_leaf_read(args->trans, args->dp, args->blkno, -1, &bp); + error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno, -1, &bp); if (error) return error; - error = xfs_attr_leaf_lookup_int(bp, args); + error = xfs_attr3_leaf_lookup_int(bp, args); if (error == ENOATTR) { xfs_trans_brelse(args->trans, bp); - return(error); + return error; } - xfs_attr_leaf_remove(bp, args); + xfs_attr3_leaf_remove(bp, args); /* * If the result is small enough, shrink it all into the inode. */ if ((forkoff = xfs_attr_shortform_allfit(bp, dp))) { xfs_bmap_init(args->flist, args->firstblock); - error = xfs_attr_leaf_to_shortform(bp, args, forkoff); + error = xfs_attr3_leaf_to_shortform(bp, args, forkoff); /* bp is gone due to xfs_da_shrink_inode */ if (!error) { error = xfs_bmap_finish(&args->trans, args->flist, @@ -1127,7 +1127,7 @@ xfs_attr_leaf_removename(xfs_da_args_t *args) ASSERT(committed); args->trans = NULL; xfs_bmap_cancel(args->flist); - return(error); + return error; } /* @@ -1137,7 +1137,7 @@ xfs_attr_leaf_removename(xfs_da_args_t *args) if (committed) xfs_trans_ijoin(args->trans, dp, 0); } - return(0); + return 0; } /* @@ -1155,21 +1155,21 @@ xfs_attr_leaf_get(xfs_da_args_t *args) trace_xfs_attr_leaf_get(args); args->blkno = 0; - error = xfs_attr_leaf_read(args->trans, args->dp, args->blkno, -1, &bp); + error = xfs_attr3_leaf_read(args->trans, args->dp, args->blkno, -1, &bp); if (error) return error; - error = xfs_attr_leaf_lookup_int(bp, args); + error = xfs_attr3_leaf_lookup_int(bp, args); if (error != EEXIST) { xfs_trans_brelse(args->trans, bp); - return(error); + return error; } - error = xfs_attr_leaf_getvalue(bp, args); + error = xfs_attr3_leaf_getvalue(bp, args); xfs_trans_brelse(args->trans, bp); if (!error && (args->rmtblkno > 0) && !(args->flags & ATTR_KERNOVAL)) { error = xfs_attr_rmtval_get(args); } - return(error); + return error; } /* @@ -1184,11 +1184,11 @@ xfs_attr_leaf_list(xfs_attr_list_context_t *context) trace_xfs_attr_leaf_list(context); context->cursor->blkno = 0; - error = xfs_attr_leaf_read(NULL, context->dp, 0, -1, &bp); + error = xfs_attr3_leaf_read(NULL, context->dp, 0, -1, &bp); if (error) return XFS_ERROR(error); - error = xfs_attr_leaf_list_int(bp, context); + error = xfs_attr3_leaf_list_int(bp, context); xfs_trans_brelse(NULL, bp); return XFS_ERROR(error); } @@ -1257,7 +1257,7 @@ restart: args->rmtblkcnt = 0; } - retval = xfs_attr_leaf_add(blk->bp, state->args); + retval = xfs_attr3_leaf_add(blk->bp, state->args); if (retval == ENOSPC) { if (state->path.active == 1) { /* @@ -1267,7 +1267,7 @@ restart: */ xfs_da_state_free(state); xfs_bmap_init(args->flist, args->firstblock); - error = xfs_attr_leaf_to_node(args); + error = xfs_attr3_leaf_to_node(args); if (!error) { error = xfs_bmap_finish(&args->trans, args->flist, @@ -1369,7 +1369,7 @@ restart: * In a separate transaction, set the incomplete flag on the * "old" attr and clear the incomplete flag on the "new" attr. */ - error = xfs_attr_leaf_flipflags(args); + error = xfs_attr3_leaf_flipflags(args); if (error) goto out; @@ -1408,7 +1408,7 @@ restart: */ blk = &state->path.blk[ state->path.active-1 ]; ASSERT(blk->magic == XFS_ATTR_LEAF_MAGIC); - error = xfs_attr_leaf_remove(blk->bp, args); + error = xfs_attr3_leaf_remove(blk->bp, args); xfs_da3_fixhashpath(state, &state->path); /* @@ -1449,7 +1449,7 @@ restart: /* * Added a "remote" value, just clear the incomplete flag. */ - error = xfs_attr_leaf_clearflag(args); + error = xfs_attr3_leaf_clearflag(args); if (error) goto out; } @@ -1523,7 +1523,7 @@ xfs_attr_node_removename(xfs_da_args_t *args) * Mark the attribute as INCOMPLETE, then bunmapi() the * remote value. */ - error = xfs_attr_leaf_setflag(args); + error = xfs_attr3_leaf_setflag(args); if (error) goto out; error = xfs_attr_rmtval_remove(args); @@ -1544,7 +1544,7 @@ xfs_attr_node_removename(xfs_da_args_t *args) */ blk = &state->path.blk[ state->path.active-1 ]; ASSERT(blk->magic == XFS_ATTR_LEAF_MAGIC); - retval = xfs_attr_leaf_remove(blk->bp, args); + retval = xfs_attr3_leaf_remove(blk->bp, args); xfs_da3_fixhashpath(state, &state->path); /* @@ -1590,13 +1590,13 @@ xfs_attr_node_removename(xfs_da_args_t *args) ASSERT(state->path.blk[0].bp); state->path.blk[0].bp = NULL; - error = xfs_attr_leaf_read(args->trans, args->dp, 0, -1, &bp); + error = xfs_attr3_leaf_read(args->trans, args->dp, 0, -1, &bp); if (error) goto out; if ((forkoff = xfs_attr_shortform_allfit(bp, dp))) { xfs_bmap_init(args->flist, args->firstblock); - error = xfs_attr_leaf_to_shortform(bp, args, forkoff); + error = xfs_attr3_leaf_to_shortform(bp, args, forkoff); /* bp is gone due to xfs_da_shrink_inode */ if (!error) { error = xfs_bmap_finish(&args->trans, @@ -1768,7 +1768,7 @@ xfs_attr_node_get(xfs_da_args_t *args) /* * Get the value, local or "remote" */ - retval = xfs_attr_leaf_getvalue(blk->bp, args); + retval = xfs_attr3_leaf_getvalue(blk->bp, args); if (!retval && (args->rmtblkno > 0) && !(args->flags & ATTR_KERNOVAL)) { retval = xfs_attr_rmtval_get(args); @@ -1793,7 +1793,9 @@ xfs_attr_node_list(xfs_attr_list_context_t *context) attrlist_cursor_kern_t *cursor; xfs_attr_leafblock_t *leaf; xfs_da_intnode_t *node; - xfs_da_node_entry_t *btree; + struct xfs_attr3_icleaf_hdr leafhdr; + struct xfs_da3_icnode_hdr nodehdr; + struct xfs_da_node_entry *btree; int error, i; struct xfs_buf *bp; @@ -1814,22 +1816,28 @@ xfs_attr_node_list(xfs_attr_list_context_t *context) if ((error != 0) && (error != EFSCORRUPTED)) return(error); if (bp) { + struct xfs_attr_leaf_entry *entries; + node = bp->b_addr; switch (be16_to_cpu(node->hdr.info.magic)) { case XFS_DA_NODE_MAGIC: + case XFS_DA3_NODE_MAGIC: trace_xfs_attr_list_wrong_blk(context); xfs_trans_brelse(NULL, bp); bp = NULL; break; case XFS_ATTR_LEAF_MAGIC: + case XFS_ATTR3_LEAF_MAGIC: leaf = bp->b_addr; - if (cursor->hashval > be32_to_cpu(leaf->entries[ - be16_to_cpu(leaf->hdr.count)-1].hashval)) { + xfs_attr3_leaf_hdr_from_disk(&leafhdr, leaf); + entries = xfs_attr3_leaf_entryp(leaf); + if (cursor->hashval > be32_to_cpu( + entries[leafhdr.count - 1].hashval)) { trace_xfs_attr_list_wrong_blk(context); xfs_trans_brelse(NULL, bp); bp = NULL; - } else if (cursor->hashval <= - be32_to_cpu(leaf->entries[0].hashval)) { + } else if (cursor->hashval <= be32_to_cpu( + entries[0].hashval)) { trace_xfs_attr_list_wrong_blk(context); xfs_trans_brelse(NULL, bp); bp = NULL; @@ -1851,27 +1859,31 @@ xfs_attr_node_list(xfs_attr_list_context_t *context) if (bp == NULL) { cursor->blkno = 0; for (;;) { + __uint16_t magic; + error = xfs_da3_node_read(NULL, context->dp, cursor->blkno, -1, &bp, XFS_ATTR_FORK); if (error) return(error); node = bp->b_addr; - if (node->hdr.info.magic == - cpu_to_be16(XFS_ATTR_LEAF_MAGIC)) + magic = be16_to_cpu(node->hdr.info.magic); + if (magic == XFS_ATTR_LEAF_MAGIC || + magic == XFS_ATTR3_LEAF_MAGIC) break; - if (unlikely(node->hdr.info.magic != - cpu_to_be16(XFS_DA_NODE_MAGIC))) { + if (magic != XFS_DA_NODE_MAGIC && + magic != XFS_DA3_NODE_MAGIC) { XFS_CORRUPTION_ERROR("xfs_attr_node_list(3)", XFS_ERRLEVEL_LOW, context->dp->i_mount, node); xfs_trans_brelse(NULL, bp); - return(XFS_ERROR(EFSCORRUPTED)); + return XFS_ERROR(EFSCORRUPTED); } + + xfs_da3_node_hdr_from_disk(&nodehdr, node); btree = xfs_da3_node_tree_p(node); - for (i = 0; i < be16_to_cpu(node->hdr.count); - btree++, i++) { + for (i = 0; i < nodehdr.count; btree++, i++) { if (cursor->hashval <= be32_to_cpu(btree->hashval)) { cursor->blkno = be32_to_cpu(btree->before); @@ -1880,9 +1892,9 @@ xfs_attr_node_list(xfs_attr_list_context_t *context) break; } } - if (i == be16_to_cpu(node->hdr.count)) { + if (i == nodehdr.count) { xfs_trans_brelse(NULL, bp); - return(0); + return 0; } xfs_trans_brelse(NULL, bp); } @@ -1896,22 +1908,23 @@ xfs_attr_node_list(xfs_attr_list_context_t *context) */ for (;;) { leaf = bp->b_addr; - error = xfs_attr_leaf_list_int(bp, context); + error = xfs_attr3_leaf_list_int(bp, context); if (error) { xfs_trans_brelse(NULL, bp); return error; } - if (context->seen_enough || leaf->hdr.info.forw == 0) + xfs_attr3_leaf_hdr_from_disk(&leafhdr, leaf); + if (context->seen_enough || leafhdr.forw == 0) break; - cursor->blkno = be32_to_cpu(leaf->hdr.info.forw); + cursor->blkno = leafhdr.forw; xfs_trans_brelse(NULL, bp); - error = xfs_attr_leaf_read(NULL, context->dp, cursor->blkno, -1, + error = xfs_attr3_leaf_read(NULL, context->dp, cursor->blkno, -1, &bp); if (error) return error; } xfs_trans_brelse(NULL, bp); - return(0); + return 0; } -- cgit v1.2.3