/*
- * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc.
+ * All Rights Reserved.
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
*
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ * You should have received a copy of the GNU General Public License
+ * 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_macros.h"
+#include "xfs_fs.h"
#include "xfs_types.h"
-#include "xfs_inum.h"
+#include "xfs_bit.h"
#include "xfs_log.h"
+#include "xfs_inum.h"
#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_ag.h"
#include "xfs_dir2.h"
#include "xfs_dmapi.h"
#include "xfs_mount.h"
-#include "xfs_alloc_btree.h"
+#include "xfs_da_btree.h"
#include "xfs_bmap_btree.h"
+#include "xfs_alloc_btree.h"
#include "xfs_ialloc_btree.h"
-#include "xfs_alloc.h"
-#include "xfs_btree.h"
-#include "xfs_attr_sf.h"
#include "xfs_dir_sf.h"
#include "xfs_dir2_sf.h"
+#include "xfs_attr_sf.h"
#include "xfs_dinode.h"
-#include "xfs_inode_item.h"
#include "xfs_inode.h"
+#include "xfs_inode_item.h"
+#include "xfs_alloc.h"
+#include "xfs_btree.h"
#include "xfs_bmap.h"
-#include "xfs_da_btree.h"
#include "xfs_attr.h"
#include "xfs_attr_leaf.h"
#include "xfs_dir_leaf.h"
#include "xfs_dir2_block.h"
#include "xfs_dir2_node.h"
#include "xfs_error.h"
-#include "xfs_bit.h"
/*
* xfs_da_btree.c
STATIC uint xfs_da_node_lasthash(xfs_dabuf_t *bp, int *count);
STATIC int xfs_da_node_order(xfs_dabuf_t *node1_bp, xfs_dabuf_t *node2_bp);
STATIC xfs_dabuf_t *xfs_da_buf_make(int nbuf, xfs_buf_t **bps, inst_t *ra);
-
+STATIC int xfs_da_blk_unlink(xfs_da_state_t *state,
+ xfs_da_state_blk_t *drop_blk,
+ xfs_da_state_blk_t *save_blk);
+STATIC void xfs_da_state_kill_altpath(xfs_da_state_t *state);
/*========================================================================
* Routines used for growing the Btree.
return(error);
ASSERT(bp != NULL);
node = bp->data;
- INT_ZERO(node->hdr.info.forw, ARCH_CONVERT);
- INT_ZERO(node->hdr.info.back, ARCH_CONVERT);
+ node->hdr.info.forw = 0;
+ node->hdr.info.back = 0;
INT_SET(node->hdr.info.magic, ARCH_CONVERT, XFS_DA_NODE_MAGIC);
- INT_ZERO(node->hdr.info.pad, ARCH_CONVERT);
- INT_ZERO(node->hdr.count, ARCH_CONVERT);
+ node->hdr.info.pad = 0;
+ node->hdr.count = 0;
INT_SET(node->hdr.level, ARCH_CONVERT, level);
xfs_da_log_buf(tp, bp,
*/
switch (oldblk->magic) {
case XFS_ATTR_LEAF_MAGIC:
-#ifndef __KERNEL__
- return(ENOTTY);
-#else
error = xfs_attr_leaf_split(state, oldblk, newblk);
if ((error != 0) && (error != ENOSPC)) {
return(error); /* GROT: attr is inconsistent */
return(error); /* GROT: attr inconsistent */
addblk = newblk;
break;
-#endif
case XFS_DIR_LEAF_MAGIC:
ASSERT(XFS_DIR_IS_V1(state->mp));
error = xfs_dir_leaf_split(state, oldblk, newblk);
*/
node = oldblk->bp->data;
- if (!INT_ISZERO(node->hdr.info.forw, ARCH_CONVERT)) {
+ if (node->hdr.info.forw) {
if (INT_GET(node->hdr.info.forw, ARCH_CONVERT) == addblk->blkno) {
bp = addblk->bp;
} else {
/*
* With V2 the extra block is data or freespace.
*/
- useextra = state->extravalid && XFS_DIR_IS_V1(state->mp);
+ useextra = state->extravalid && (XFS_DIR_IS_V1(state->mp) ||
+ state->args->whichfork == XFS_ATTR_FORK);
newcount = 1 + useextra;
/*
* Do we have to split the node?
*/
switch (drop_blk->magic) {
case XFS_ATTR_LEAF_MAGIC:
-#ifndef __KERNEL__
- error = ENOTTY;
-#else
error = xfs_attr_leaf_toosmall(state, &action);
-#endif
if (error)
return(error);
if (action == 0)
return(0);
-#ifdef __KERNEL__
xfs_attr_leaf_unbalance(state, drop_blk, save_blk);
-#endif
break;
case XFS_DIR_LEAF_MAGIC:
ASSERT(XFS_DIR_IS_V1(state->mp));
ASSERT(root_blk->magic == XFS_DA_NODE_MAGIC);
oldroot = root_blk->bp->data;
ASSERT(INT_GET(oldroot->hdr.info.magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC);
- ASSERT(INT_ISZERO(oldroot->hdr.info.forw, ARCH_CONVERT));
- ASSERT(INT_ISZERO(oldroot->hdr.info.back, ARCH_CONVERT));
+ ASSERT(!oldroot->hdr.info.forw);
+ ASSERT(!oldroot->hdr.info.back);
/*
* If the root has more than one child, then don't do anything.
} else {
ASSERT(INT_GET(blkinfo->magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC);
}
- ASSERT(INT_ISZERO(blkinfo->forw, ARCH_CONVERT));
- ASSERT(INT_ISZERO(blkinfo->back, ARCH_CONVERT));
+ ASSERT(!blkinfo->forw);
+ ASSERT(!blkinfo->back);
memcpy(root_blk->bp->data, bp->data, state->blocksize);
xfs_da_log_buf(args->trans, root_blk->bp, 0, state->blocksize - 1);
error = xfs_da_shrink_inode(args, child, bp);
* Make altpath point to the block we want to keep and
* path point to the block we want to drop (this one).
*/
- forward = (!INT_ISZERO(info->forw, ARCH_CONVERT));
+ forward = info->forw;
memcpy(&state->altpath, &state->path, sizeof(state->path));
error = xfs_da_path_shift(state, &state->altpath, forward,
0, &retval);
level = path->active-1;
blk = &path->blk[ level ];
switch (blk->magic) {
-#ifdef __KERNEL__
case XFS_ATTR_LEAF_MAGIC:
lasthash = xfs_attr_leaf_lasthash(blk->bp, &count);
if (count == 0)
return;
break;
-#endif
case XFS_DIR_LEAF_MAGIC:
ASSERT(XFS_DIR_IS_V1(state->mp));
lasthash = xfs_dir_leaf_lasthash(blk->bp, &count);
blkno = INT_GET(btree->before, ARCH_CONVERT);
}
}
-#ifdef __KERNEL__
else if (INT_GET(curr->magic, ARCH_CONVERT) == XFS_ATTR_LEAF_MAGIC) {
blk->hashval = xfs_attr_leaf_lasthash(blk->bp, NULL);
break;
}
-#endif
else if (INT_GET(curr->magic, ARCH_CONVERT) == XFS_DIR_LEAF_MAGIC) {
blk->hashval = xfs_dir_leaf_lasthash(blk->bp, NULL);
break;
retval = xfs_dir2_leafn_lookup_int(blk->bp, args,
&blk->index, state);
}
-#ifdef __KERNEL__
else if (blk->magic == XFS_ATTR_LEAF_MAGIC) {
retval = xfs_attr_leaf_lookup_int(blk->bp, args);
blk->index = args->index;
args->blkno = blk->blkno;
}
-#endif
if (((retval == ENOENT) || (retval == ENOATTR)) &&
(blk->hashval == args->hashval)) {
error = xfs_da_path_shift(state, &state->path, 1, 1,
if (retval == 0) {
continue;
}
-#ifdef __KERNEL__
else if (blk->magic == XFS_ATTR_LEAF_MAGIC) {
/* path_shift() gives ENOENT */
retval = XFS_ERROR(ENOATTR);
}
-#endif
}
break;
}
ASSERT(old_blk->magic == new_blk->magic);
switch (old_blk->magic) {
-#ifdef __KERNEL__
case XFS_ATTR_LEAF_MAGIC:
before = xfs_attr_leaf_order(old_blk->bp, new_blk->bp);
break;
-#endif
case XFS_DIR_LEAF_MAGIC:
ASSERT(XFS_DIR_IS_V1(state->mp));
before = xfs_dir_leaf_order(old_blk->bp, new_blk->bp);
ASSERT(INT_GET(node->hdr.info.magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC);
if (count)
*count = INT_GET(node->hdr.count, ARCH_CONVERT);
- if (INT_ISZERO(node->hdr.count, ARCH_CONVERT))
+ if (!node->hdr.count)
return(0);
return(INT_GET(node->btree[ INT_GET(node->hdr.count, ARCH_CONVERT)-1 ].hashval, ARCH_CONVERT));
}
/*
* Unlink a block from a doubly linked list of blocks.
*/
-int /* error */
+STATIC int /* error */
xfs_da_blk_unlink(xfs_da_state_t *state, xfs_da_state_blk_t *drop_blk,
xfs_da_state_blk_t *save_blk)
{
ASSERT(level == path->active-1);
blk->index = 0;
switch(blk->magic) {
-#ifdef __KERNEL__
case XFS_ATTR_LEAF_MAGIC:
blk->hashval = xfs_attr_leaf_lasthash(blk->bp,
NULL);
break;
-#endif
case XFS_DIR_LEAF_MAGIC:
ASSERT(XFS_DIR_IS_V1(state->mp));
blk->hashval = xfs_dir_leaf_lasthash(blk->bp,
* This is implemented with some source-level loop unrolling.
*/
xfs_dahash_t
-xfs_da_hashname(uchar_t *name, int namelen)
+xfs_da_hashname(const uchar_t *name, int namelen)
{
xfs_dahash_t hash;
-#define ROTL(x,y) (((x) << (y)) | ((x) >> (32 - (y))))
-#ifdef SLOWVERSION
- /*
- * This is the old one-byte-at-a-time version.
- */
- for (hash = 0; namelen > 0; namelen--) {
- hash = *name++ ^ ROTL(hash, 7);
- }
- return(hash);
-#else
/*
* Do four characters at a time as long as we can.
*/
- for (hash = 0; namelen >= 4; namelen -= 4, name += 4) {
+ for (hash = 0; namelen >= 4; namelen -= 4, name += 4)
hash = (name[0] << 21) ^ (name[1] << 14) ^ (name[2] << 7) ^
- (name[3] << 0) ^ ROTL(hash, 7 * 4);
- }
+ (name[3] << 0) ^ rol32(hash, 7 * 4);
+
/*
* Now do the rest of the characters.
*/
switch (namelen) {
case 3:
return (name[0] << 14) ^ (name[1] << 7) ^ (name[2] << 0) ^
- ROTL(hash, 7 * 3);
+ rol32(hash, 7 * 3);
case 2:
- return (name[0] << 7) ^ (name[1] << 0) ^ ROTL(hash, 7 * 2);
+ return (name[0] << 7) ^ (name[1] << 0) ^ rol32(hash, 7 * 2);
case 1:
- return (name[0] << 0) ^ ROTL(hash, 7 * 1);
- case 0:
+ return (name[0] << 0) ^ rol32(hash, 7 * 1);
+ default: /* case 0: */
return hash;
}
- /* NOTREACHED */
-#endif
-#undef ROTL
- return 0; /* keep gcc happy */
}
/*
int caller,
inst_t *ra)
{
- xfs_buf_t *bp = 0;
+ xfs_buf_t *bp = NULL;
xfs_buf_t **bplist;
int error=0;
int i;
cmn_err(CE_ALERT,
"[%02d] br_startoff %lld br_startblock %lld br_blockcount %lld br_state %d\n",
i,
- mapp[i].br_startoff,
- mapp[i].br_startblock,
- mapp[i].br_blockcount,
+ (long long)mapp[i].br_startoff,
+ (long long)mapp[i].br_startblock,
+ (long long)mapp[i].br_blockcount,
mapp[i].br_state);
}
}
error = bp ? XFS_BUF_GETERROR(bp) : XFS_ERROR(EIO);
break;
case 1:
-#ifndef __KERNEL__
case 2:
-#endif
bp = NULL;
error = xfs_trans_read_buf(mp, trans, mp->m_ddev_targp,
mappedbno, nmapped, 0, &bp);
break;
-#ifdef __KERNEL__
case 3:
xfs_baread(mp->m_ddev_targp, mappedbno, nmapped);
error = 0;
bp = NULL;
break;
-#endif
}
if (error) {
if (bp)
/*
* Kill the altpath contents of a da-state structure.
*/
-void
+STATIC void
xfs_da_state_kill_altpath(xfs_da_state_t *state)
{
int i;
git://git.onelab.eu / linux-2.6.git / blobdiff