diff options
Diffstat (limited to 'fs/xfs/xfs_attr.c')
| -rw-r--r-- | fs/xfs/xfs_attr.c | 454 |
1 files changed, 85 insertions, 369 deletions
diff --git a/fs/xfs/xfs_attr.c b/fs/xfs/xfs_attr.c index 888683844d98..20fe3fe9d341 100644 --- a/fs/xfs/xfs_attr.c +++ b/fs/xfs/xfs_attr.c @@ -15,7 +15,6 @@ * along with this program; if not, write the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ - #include "xfs.h" #include "xfs_fs.h" #include "xfs_types.h" @@ -35,6 +34,7 @@ #include "xfs_bmap.h" #include "xfs_attr.h" #include "xfs_attr_leaf.h" +#include "xfs_attr_remote.h" #include "xfs_error.h" #include "xfs_quota.h" #include "xfs_trans_space.h" @@ -74,13 +74,6 @@ STATIC int xfs_attr_node_list(xfs_attr_list_context_t *context); STATIC int xfs_attr_fillstate(xfs_da_state_t *state); STATIC int xfs_attr_refillstate(xfs_da_state_t *state); -/* - * Routines to manipulate out-of-line attribute values. - */ -STATIC int xfs_attr_rmtval_set(xfs_da_args_t *args); -STATIC int xfs_attr_rmtval_remove(xfs_da_args_t *args); - -#define ATTR_RMTVALUE_MAPSIZE 1 /* # of map entries at once */ STATIC int xfs_attr_name_to_xname( @@ -820,7 +813,7 @@ 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; @@ -906,7 +899,7 @@ 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; @@ -914,14 +907,14 @@ 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); @@ -937,7 +930,7 @@ 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 @@ -945,7 +938,7 @@ 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); @@ -1010,7 +1003,7 @@ 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); @@ -1032,19 +1025,19 @@ 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, @@ -1076,9 +1069,9 @@ 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; } /* @@ -1101,24 +1094,24 @@ 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, @@ -1128,7 +1121,7 @@ xfs_attr_leaf_removename(xfs_da_args_t *args) ASSERT(committed); args->trans = NULL; xfs_bmap_cancel(args->flist); - return(error); + return error; } /* @@ -1138,7 +1131,7 @@ xfs_attr_leaf_removename(xfs_da_args_t *args) if (committed) xfs_trans_ijoin(args->trans, dp, 0); } - return(0); + return 0; } /* @@ -1156,21 +1149,21 @@ 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; } /* @@ -1185,11 +1178,11 @@ 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); } @@ -1236,7 +1229,7 @@ restart: * Search to see if name already exists, and get back a pointer * to where it should go. */ - error = xfs_da_node_lookup_int(state, &retval); + error = xfs_da3_node_lookup_int(state, &retval); if (error) goto out; blk = &state->path.blk[ state->path.active-1 ]; @@ -1258,7 +1251,7 @@ 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) { /* @@ -1268,7 +1261,7 @@ 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, @@ -1307,7 +1300,7 @@ restart: * in the index2/blkno2/rmtblkno2/rmtblkcnt2 fields. */ xfs_bmap_init(args->flist, args->firstblock); - error = xfs_da_split(state); + error = xfs_da3_split(state); if (!error) { error = xfs_bmap_finish(&args->trans, args->flist, &committed); @@ -1329,7 +1322,7 @@ restart: /* * Addition succeeded, update Btree hashvals. */ - xfs_da_fixhashpath(state, &state->path); + xfs_da3_fixhashpath(state, &state->path); } /* @@ -1370,7 +1363,7 @@ 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; @@ -1400,7 +1393,7 @@ restart: state->blocksize = state->mp->m_sb.sb_blocksize; state->node_ents = state->mp->m_attr_node_ents; state->inleaf = 0; - error = xfs_da_node_lookup_int(state, &retval); + error = xfs_da3_node_lookup_int(state, &retval); if (error) goto out; @@ -1409,15 +1402,15 @@ restart: */ blk = &state->path.blk[ state->path.active-1 ]; ASSERT(blk->magic == XFS_ATTR_LEAF_MAGIC); - error = xfs_attr_leaf_remove(blk->bp, args); - xfs_da_fixhashpath(state, &state->path); + error = xfs_attr3_leaf_remove(blk->bp, args); + xfs_da3_fixhashpath(state, &state->path); /* * Check to see if the tree needs to be collapsed. */ if (retval && (state->path.active > 1)) { xfs_bmap_init(args->flist, args->firstblock); - error = xfs_da_join(state); + error = xfs_da3_join(state); if (!error) { error = xfs_bmap_finish(&args->trans, args->flist, @@ -1450,7 +1443,7 @@ 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; } @@ -1495,7 +1488,7 @@ xfs_attr_node_removename(xfs_da_args_t *args) /* * Search to see if name exists, and get back a pointer to it. */ - error = xfs_da_node_lookup_int(state, &retval); + error = xfs_da3_node_lookup_int(state, &retval); if (error || (retval != EEXIST)) { if (error == 0) error = retval; @@ -1524,7 +1517,7 @@ 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); @@ -1545,15 +1538,15 @@ 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); - xfs_da_fixhashpath(state, &state->path); + retval = xfs_attr3_leaf_remove(blk->bp, args); + xfs_da3_fixhashpath(state, &state->path); /* * Check to see if the tree needs to be collapsed. */ if (retval && (state->path.active > 1)) { xfs_bmap_init(args->flist, args->firstblock); - error = xfs_da_join(state); + error = xfs_da3_join(state); if (!error) { error = xfs_bmap_finish(&args->trans, args->flist, &committed); @@ -1591,13 +1584,13 @@ 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, @@ -1699,7 +1692,7 @@ xfs_attr_refillstate(xfs_da_state_t *state) ASSERT((path->active >= 0) && (path->active < XFS_DA_NODE_MAXDEPTH)); for (blk = path->blk, level = 0; level < path->active; blk++, level++) { if (blk->disk_blkno) { - error = xfs_da_node_read(state->args->trans, + error = xfs_da3_node_read(state->args->trans, state->args->dp, blk->blkno, blk->disk_blkno, &blk->bp, XFS_ATTR_FORK); @@ -1718,7 +1711,7 @@ xfs_attr_refillstate(xfs_da_state_t *state) ASSERT((path->active >= 0) && (path->active < XFS_DA_NODE_MAXDEPTH)); for (blk = path->blk, level = 0; level < path->active; blk++, level++) { if (blk->disk_blkno) { - error = xfs_da_node_read(state->args->trans, + error = xfs_da3_node_read(state->args->trans, state->args->dp, blk->blkno, blk->disk_blkno, &blk->bp, XFS_ATTR_FORK); @@ -1758,7 +1751,7 @@ xfs_attr_node_get(xfs_da_args_t *args) /* * Search to see if name exists, and get back a pointer to it. */ - error = xfs_da_node_lookup_int(state, &retval); + error = xfs_da3_node_lookup_int(state, &retval); if (error) { retval = error; } else if (retval == EEXIST) { @@ -1769,7 +1762,7 @@ 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); @@ -1794,7 +1787,9 @@ 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; @@ -1810,27 +1805,33 @@ xfs_attr_node_list(xfs_attr_list_context_t *context) */ bp = NULL; if (cursor->blkno > 0) { - error = xfs_da_node_read(NULL, context->dp, cursor->blkno, -1, + error = xfs_da3_node_read(NULL, context->dp, cursor->blkno, -1, &bp, XFS_ATTR_FORK); 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; @@ -1852,27 +1853,31 @@ xfs_attr_node_list(xfs_attr_list_context_t *context) if (bp == NULL) { cursor->blkno = 0; for (;;) { - error = xfs_da_node_read(NULL, context->dp, + __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); } - btree = node->btree; - for (i = 0; i < be16_to_cpu(node->hdr.count); - btree++, i++) { + + xfs_da3_node_hdr_from_disk(&nodehdr, node); + btree = xfs_da3_node_tree_p(node); + for (i = 0; i < nodehdr.count; btree++, i++) { if (cursor->hashval <= be32_to_cpu(btree->hashval)) { cursor->blkno = be32_to_cpu(btree->before); @@ -1881,9 +1886,9 @@ 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); } @@ -1897,310 +1902,21 @@ 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); -} - - -/*======================================================================== - * External routines for manipulating out-of-line attribute values. - *========================================================================*/ - -/* - * Read the value associated with an attribute from the out-of-line buffer - * that we stored it in. - */ -int -xfs_attr_rmtval_get(xfs_da_args_t *args) -{ - xfs_bmbt_irec_t map[ATTR_RMTVALUE_MAPSIZE]; - xfs_mount_t *mp; - xfs_daddr_t dblkno; - void *dst; - xfs_buf_t *bp; - int nmap, error, tmp, valuelen, blkcnt, i; - xfs_dablk_t lblkno; - - trace_xfs_attr_rmtval_get(args); - - ASSERT(!(args->flags & ATTR_KERNOVAL)); - - mp = args->dp->i_mount; - dst = args->value; - valuelen = args->valuelen; - lblkno = args->rmtblkno; - while (valuelen > 0) { - nmap = ATTR_RMTVALUE_MAPSIZE; - error = xfs_bmapi_read(args->dp, (xfs_fileoff_t)lblkno, - args->rmtblkcnt, map, &nmap, - XFS_BMAPI_ATTRFORK); - if (error) - return(error); - ASSERT(nmap >= 1); - - for (i = 0; (i < nmap) && (valuelen > 0); i++) { - ASSERT((map[i].br_startblock != DELAYSTARTBLOCK) && - (map[i].br_startblock != HOLESTARTBLOCK)); - dblkno = XFS_FSB_TO_DADDR(mp, map[i].br_startblock); - blkcnt = XFS_FSB_TO_BB(mp, map[i].br_blockcount); - error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, - dblkno, blkcnt, 0, &bp, NULL); - if (error) - return(error); - - tmp = min_t(int, valuelen, BBTOB(bp->b_length)); - xfs_buf_iomove(bp, 0, tmp, dst, XBRW_READ); - xfs_buf_relse(bp); - dst += tmp; - valuelen -= tmp; - - lblkno += map[i].br_blockcount; - } - } - ASSERT(valuelen == 0); - return(0); -} - -/* - * Write the value associated with an attribute into the out-of-line buffer - * that we have defined for it. - */ -STATIC int -xfs_attr_rmtval_set(xfs_da_args_t *args) -{ - xfs_mount_t *mp; - xfs_fileoff_t lfileoff; - xfs_inode_t *dp; - xfs_bmbt_irec_t map; - xfs_daddr_t dblkno; - void *src; - xfs_buf_t *bp; - xfs_dablk_t lblkno; - int blkcnt, valuelen, nmap, error, tmp, committed; - - trace_xfs_attr_rmtval_set(args); - - dp = args->dp; - mp = dp->i_mount; - src = args->value; - - /* - * Find a "hole" in the attribute address space large enough for - * us to drop the new attribute's value into. - */ - blkcnt = XFS_B_TO_FSB(mp, args->valuelen); - lfileoff = 0; - error = xfs_bmap_first_unused(args->trans, args->dp, blkcnt, &lfileoff, - XFS_ATTR_FORK); - if (error) { - return(error); - } - args->rmtblkno = lblkno = (xfs_dablk_t)lfileoff; - args->rmtblkcnt = blkcnt; - - /* - * Roll through the "value", allocating blocks on disk as required. - */ - while (blkcnt > 0) { - /* - * Allocate a single extent, up to the size of the value. - */ - xfs_bmap_init(args->flist, args->firstblock); - nmap = 1; - error = xfs_bmapi_write(args->trans, dp, (xfs_fileoff_t)lblkno, - blkcnt, - XFS_BMAPI_ATTRFORK | XFS_BMAPI_METADATA, - args->firstblock, args->total, &map, &nmap, - args->flist); - if (!error) { - error = xfs_bmap_finish(&args->trans, args->flist, - &committed); - } - if (error) { - ASSERT(committed); - args->trans = NULL; - xfs_bmap_cancel(args->flist); - return(error); - } - - /* - * bmap_finish() may have committed the last trans and started - * a new one. We need the inode to be in all transactions. - */ - if (committed) - xfs_trans_ijoin(args->trans, dp, 0); - - ASSERT(nmap == 1); - ASSERT((map.br_startblock != DELAYSTARTBLOCK) && - (map.br_startblock != HOLESTARTBLOCK)); - lblkno += map.br_blockcount; - blkcnt -= map.br_blockcount; - - /* - * Start the next trans in the chain. - */ - error = xfs_trans_roll(&args->trans, dp); - if (error) - return (error); - } - - /* - * Roll through the "value", copying the attribute value to the - * already-allocated blocks. Blocks are written synchronously - * so that we can know they are all on disk before we turn off - * the INCOMPLETE flag. - */ - lblkno = args->rmtblkno; - valuelen = args->valuelen; - while (valuelen > 0) { - int buflen; - - /* - * Try to remember where we decided to put the value. - */ - xfs_bmap_init(args->flist, args->firstblock); - nmap = 1; - error = xfs_bmapi_read(dp, (xfs_fileoff_t)lblkno, - args->rmtblkcnt, &map, &nmap, - XFS_BMAPI_ATTRFORK); - if (error) - return(error); - ASSERT(nmap == 1); - ASSERT((map.br_startblock != DELAYSTARTBLOCK) && - (map.br_startblock != HOLESTARTBLOCK)); - - dblkno = XFS_FSB_TO_DADDR(mp, map.br_startblock), - blkcnt = XFS_FSB_TO_BB(mp, map.br_blockcount); - - bp = xfs_buf_get(mp->m_ddev_targp, dblkno, blkcnt, 0); - if (!bp) - return ENOMEM; - - buflen = BBTOB(bp->b_length); - tmp = min_t(int, valuelen, buflen); - xfs_buf_iomove(bp, 0, tmp, src, XBRW_WRITE); - if (tmp < buflen) - xfs_buf_zero(bp, tmp, buflen - tmp); - - error = xfs_bwrite(bp); /* GROT: NOTE: synchronous write */ - xfs_buf_relse(bp); - if (error) - return error; - src += tmp; - valuelen -= tmp; - - lblkno += map.br_blockcount; - } - ASSERT(valuelen == 0); - return(0); -} - -/* - * Remove the value associated with an attribute by deleting the - * out-of-line buffer that it is stored on. - */ -STATIC int -xfs_attr_rmtval_remove(xfs_da_args_t *args) -{ - xfs_mount_t *mp; - xfs_bmbt_irec_t map; - xfs_buf_t *bp; - xfs_daddr_t dblkno; - xfs_dablk_t lblkno; - int valuelen, blkcnt, nmap, error, done, committed; - - trace_xfs_attr_rmtval_remove(args); - - mp = args->dp->i_mount; - - /* - * Roll through the "value", invalidating the attribute value's - * blocks. - */ - lblkno = args->rmtblkno; - valuelen = args->rmtblkcnt; - while (valuelen > 0) { - /* - * Try to remember where we decided to put the value. - */ - nmap = 1; - error = xfs_bmapi_read(args->dp, (xfs_fileoff_t)lblkno, - args->rmtblkcnt, &map, &nmap, - XFS_BMAPI_ATTRFORK); - if (error) - return(error); - ASSERT(nmap == 1); - ASSERT((map.br_startblock != DELAYSTARTBLOCK) && - (map.br_startblock != HOLESTARTBLOCK)); - - dblkno = XFS_FSB_TO_DADDR(mp, map.br_startblock), - blkcnt = XFS_FSB_TO_BB(mp, map.br_blockcount); - - /* - * If the "remote" value is in the cache, remove it. - */ - bp = xfs_incore(mp->m_ddev_targp, dblkno, blkcnt, XBF_TRYLOCK); - if (bp) { - xfs_buf_stale(bp); - xfs_buf_relse(bp); - bp = NULL; - } - - valuelen -= map.br_blockcount; - - lblkno += map.br_blockcount; - } - - /* - * Keep de-allocating extents until the remote-value region is gone. - */ - lblkno = args->rmtblkno; - blkcnt = args->rmtblkcnt; - done = 0; - while (!done) { - xfs_bmap_init(args->flist, args->firstblock); - error = xfs_bunmapi(args->trans, args->dp, lblkno, blkcnt, - XFS_BMAPI_ATTRFORK | XFS_BMAPI_METADATA, - 1, args->firstblock, args->flist, - &done); - if (!error) { - error = xfs_bmap_finish(&args->trans, args->flist, - &committed); - } - if (error) { - ASSERT(committed); - args->trans = NULL; - xfs_bmap_cancel(args->flist); - return(error); - } - - /* - * bmap_finish() may have committed the last trans and started - * a new one. We need the inode to be in all transactions. - */ - if (committed) - xfs_trans_ijoin(args->trans, args->dp, 0); - - /* - * Close out trans and start the next one in the chain. - */ - error = xfs_trans_roll(&args->trans, args->dp); - if (error) - return (error); - } - return(0); + return 0; } |