libxfs: move source files

Move all the source files that are shared with userspace into
libxfs/. This is done as one big chunk simpy to get it done
quickly

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

1 files changed, 0 insertions, 479 deletions

diff --git a/fs/xfs/xfs_inode_buf.c b/fs/xfs/xfs_inode_buf.c
deleted file mode 100644
index 1e5366d7745e..000000000000
--- a/fs/xfs/xfs_inode_buf.c
+++ /dev/null
@@ -1,479 +0,0 @@
-/*
- * Copyright (c) 2000-2006 Silicon Graphics, Inc.
- * All Rights Reserved.
- *
- * 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.  See the
- * GNU General Public License for more details.
- *
- * 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_fs.h"
-#include "xfs_shared.h"
-#include "xfs_format.h"
-#include "xfs_log_format.h"
-#include "xfs_trans_resv.h"
-#include "xfs_sb.h"
-#include "xfs_ag.h"
-#include "xfs_mount.h"
-#include "xfs_inode.h"
-#include "xfs_error.h"
-#include "xfs_cksum.h"
-#include "xfs_icache.h"
-#include "xfs_trans.h"
-#include "xfs_ialloc.h"
-#include "xfs_dinode.h"
-
-/*
- * Check that none of the inode's in the buffer have a next
- * unlinked field of 0.
- */
-#if defined(DEBUG)
-void
-xfs_inobp_check(
-	xfs_mount_t	*mp,
-	xfs_buf_t	*bp)
-{
-	int		i;
-	int		j;
-	xfs_dinode_t	*dip;
-
-	j = mp->m_inode_cluster_size >> mp->m_sb.sb_inodelog;
-
-	for (i = 0; i < j; i++) {
-		dip = (xfs_dinode_t *)xfs_buf_offset(bp,
-					i * mp->m_sb.sb_inodesize);
-		if (!dip->di_next_unlinked)  {
-			xfs_alert(mp,
-	"Detected bogus zero next_unlinked field in inode %d buffer 0x%llx.",
-				i, (long long)bp->b_bn);
-		}
-	}
-}
-#endif
-
-/*
- * If we are doing readahead on an inode buffer, we might be in log recovery
- * reading an inode allocation buffer that hasn't yet been replayed, and hence
- * has not had the inode cores stamped into it. Hence for readahead, the buffer
- * may be potentially invalid.
- *
- * If the readahead buffer is invalid, we don't want to mark it with an error,
- * but we do want to clear the DONE status of the buffer so that a followup read
- * will re-read it from disk. This will ensure that we don't get an unnecessary
- * warnings during log recovery and we don't get unnecssary panics on debug
- * kernels.
- */
-static void
-xfs_inode_buf_verify(
-	struct xfs_buf	*bp,
-	bool		readahead)
-{
-	struct xfs_mount *mp = bp->b_target->bt_mount;
-	int		i;
-	int		ni;
-
-	/*
-	 * Validate the magic number and version of every inode in the buffer
-	 */
-	ni = XFS_BB_TO_FSB(mp, bp->b_length) * mp->m_sb.sb_inopblock;
-	for (i = 0; i < ni; i++) {
-		int		di_ok;
-		xfs_dinode_t	*dip;
-
-		dip = (struct xfs_dinode *)xfs_buf_offset(bp,
-					(i << mp->m_sb.sb_inodelog));
-		di_ok = dip->di_magic == cpu_to_be16(XFS_DINODE_MAGIC) &&
-			    XFS_DINODE_GOOD_VERSION(dip->di_version);
-		if (unlikely(XFS_TEST_ERROR(!di_ok, mp,
-						XFS_ERRTAG_ITOBP_INOTOBP,
-						XFS_RANDOM_ITOBP_INOTOBP))) {
-			if (readahead) {
-				bp->b_flags &= ~XBF_DONE;
-				return;
-			}
-
-			xfs_buf_ioerror(bp, EFSCORRUPTED);
-			xfs_verifier_error(bp);
-#ifdef DEBUG
-			xfs_alert(mp,
-				"bad inode magic/vsn daddr %lld #%d (magic=%x)",
-				(unsigned long long)bp->b_bn, i,
-				be16_to_cpu(dip->di_magic));
-#endif
-		}
-	}
-	xfs_inobp_check(mp, bp);
-}
-
-
-static void
-xfs_inode_buf_read_verify(
-	struct xfs_buf	*bp)
-{
-	xfs_inode_buf_verify(bp, false);
-}
-
-static void
-xfs_inode_buf_readahead_verify(
-	struct xfs_buf	*bp)
-{
-	xfs_inode_buf_verify(bp, true);
-}
-
-static void
-xfs_inode_buf_write_verify(
-	struct xfs_buf	*bp)
-{
-	xfs_inode_buf_verify(bp, false);
-}
-
-const struct xfs_buf_ops xfs_inode_buf_ops = {
-	.verify_read = xfs_inode_buf_read_verify,
-	.verify_write = xfs_inode_buf_write_verify,
-};
-
-const struct xfs_buf_ops xfs_inode_buf_ra_ops = {
-	.verify_read = xfs_inode_buf_readahead_verify,
-	.verify_write = xfs_inode_buf_write_verify,
-};
-
-
-/*
- * This routine is called to map an inode to the buffer containing the on-disk
- * version of the inode.  It returns a pointer to the buffer containing the
- * on-disk inode in the bpp parameter, and in the dipp parameter it returns a
- * pointer to the on-disk inode within that buffer.
- *
- * If a non-zero error is returned, then the contents of bpp and dipp are
- * undefined.
- */
-int
-xfs_imap_to_bp(
-	struct xfs_mount	*mp,
-	struct xfs_trans	*tp,
-	struct xfs_imap		*imap,
-	struct xfs_dinode       **dipp,
-	struct xfs_buf		**bpp,
-	uint			buf_flags,
-	uint			iget_flags)
-{
-	struct xfs_buf		*bp;
-	int			error;
-
-	buf_flags |= XBF_UNMAPPED;
-	error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, imap->im_blkno,
-				   (int)imap->im_len, buf_flags, &bp,
-				   &xfs_inode_buf_ops);
-	if (error) {
-		if (error == EAGAIN) {
-			ASSERT(buf_flags & XBF_TRYLOCK);
-			return error;
-		}
-
-		if (error == EFSCORRUPTED &&
-		    (iget_flags & XFS_IGET_UNTRUSTED))
-			return EINVAL;
-
-		xfs_warn(mp, "%s: xfs_trans_read_buf() returned error %d.",
-			__func__, error);
-		return error;
-	}
-
-	*bpp = bp;
-	*dipp = (struct xfs_dinode *)xfs_buf_offset(bp, imap->im_boffset);
-	return 0;
-}
-
-void
-xfs_dinode_from_disk(
-	xfs_icdinode_t		*to,
-	xfs_dinode_t		*from)
-{
-	to->di_magic = be16_to_cpu(from->di_magic);
-	to->di_mode = be16_to_cpu(from->di_mode);
-	to->di_version = from ->di_version;
-	to->di_format = from->di_format;
-	to->di_onlink = be16_to_cpu(from->di_onlink);
-	to->di_uid = be32_to_cpu(from->di_uid);
-	to->di_gid = be32_to_cpu(from->di_gid);
-	to->di_nlink = be32_to_cpu(from->di_nlink);
-	to->di_projid_lo = be16_to_cpu(from->di_projid_lo);
-	to->di_projid_hi = be16_to_cpu(from->di_projid_hi);
-	memcpy(to->di_pad, from->di_pad, sizeof(to->di_pad));
-	to->di_flushiter = be16_to_cpu(from->di_flushiter);
-	to->di_atime.t_sec = be32_to_cpu(from->di_atime.t_sec);
-	to->di_atime.t_nsec = be32_to_cpu(from->di_atime.t_nsec);
-	to->di_mtime.t_sec = be32_to_cpu(from->di_mtime.t_sec);
-	to->di_mtime.t_nsec = be32_to_cpu(from->di_mtime.t_nsec);
-	to->di_ctime.t_sec = be32_to_cpu(from->di_ctime.t_sec);
-	to->di_ctime.t_nsec = be32_to_cpu(from->di_ctime.t_nsec);
-	to->di_size = be64_to_cpu(from->di_size);
-	to->di_nblocks = be64_to_cpu(from->di_nblocks);
-	to->di_extsize = be32_to_cpu(from->di_extsize);
-	to->di_nextents = be32_to_cpu(from->di_nextents);
-	to->di_anextents = be16_to_cpu(from->di_anextents);
-	to->di_forkoff = from->di_forkoff;
-	to->di_aformat	= from->di_aformat;
-	to->di_dmevmask	= be32_to_cpu(from->di_dmevmask);
-	to->di_dmstate	= be16_to_cpu(from->di_dmstate);
-	to->di_flags	= be16_to_cpu(from->di_flags);
-	to->di_gen	= be32_to_cpu(from->di_gen);
-
-	if (to->di_version == 3) {
-		to->di_changecount = be64_to_cpu(from->di_changecount);
-		to->di_crtime.t_sec = be32_to_cpu(from->di_crtime.t_sec);
-		to->di_crtime.t_nsec = be32_to_cpu(from->di_crtime.t_nsec);
-		to->di_flags2 = be64_to_cpu(from->di_flags2);
-		to->di_ino = be64_to_cpu(from->di_ino);
-		to->di_lsn = be64_to_cpu(from->di_lsn);
-		memcpy(to->di_pad2, from->di_pad2, sizeof(to->di_pad2));
-		uuid_copy(&to->di_uuid, &from->di_uuid);
-	}
-}
-
-void
-xfs_dinode_to_disk(
-	xfs_dinode_t		*to,
-	xfs_icdinode_t		*from)
-{
-	to->di_magic = cpu_to_be16(from->di_magic);
-	to->di_mode = cpu_to_be16(from->di_mode);
-	to->di_version = from ->di_version;
-	to->di_format = from->di_format;
-	to->di_onlink = cpu_to_be16(from->di_onlink);
-	to->di_uid = cpu_to_be32(from->di_uid);
-	to->di_gid = cpu_to_be32(from->di_gid);
-	to->di_nlink = cpu_to_be32(from->di_nlink);
-	to->di_projid_lo = cpu_to_be16(from->di_projid_lo);
-	to->di_projid_hi = cpu_to_be16(from->di_projid_hi);
-	memcpy(to->di_pad, from->di_pad, sizeof(to->di_pad));
-	to->di_atime.t_sec = cpu_to_be32(from->di_atime.t_sec);
-	to->di_atime.t_nsec = cpu_to_be32(from->di_atime.t_nsec);
-	to->di_mtime.t_sec = cpu_to_be32(from->di_mtime.t_sec);
-	to->di_mtime.t_nsec = cpu_to_be32(from->di_mtime.t_nsec);
-	to->di_ctime.t_sec = cpu_to_be32(from->di_ctime.t_sec);
-	to->di_ctime.t_nsec = cpu_to_be32(from->di_ctime.t_nsec);
-	to->di_size = cpu_to_be64(from->di_size);
-	to->di_nblocks = cpu_to_be64(from->di_nblocks);
-	to->di_extsize = cpu_to_be32(from->di_extsize);
-	to->di_nextents = cpu_to_be32(from->di_nextents);
-	to->di_anextents = cpu_to_be16(from->di_anextents);
-	to->di_forkoff = from->di_forkoff;
-	to->di_aformat = from->di_aformat;
-	to->di_dmevmask = cpu_to_be32(from->di_dmevmask);
-	to->di_dmstate = cpu_to_be16(from->di_dmstate);
-	to->di_flags = cpu_to_be16(from->di_flags);
-	to->di_gen = cpu_to_be32(from->di_gen);
-
-	if (from->di_version == 3) {
-		to->di_changecount = cpu_to_be64(from->di_changecount);
-		to->di_crtime.t_sec = cpu_to_be32(from->di_crtime.t_sec);
-		to->di_crtime.t_nsec = cpu_to_be32(from->di_crtime.t_nsec);
-		to->di_flags2 = cpu_to_be64(from->di_flags2);
-		to->di_ino = cpu_to_be64(from->di_ino);
-		to->di_lsn = cpu_to_be64(from->di_lsn);
-		memcpy(to->di_pad2, from->di_pad2, sizeof(to->di_pad2));
-		uuid_copy(&to->di_uuid, &from->di_uuid);
-		to->di_flushiter = 0;
-	} else {
-		to->di_flushiter = cpu_to_be16(from->di_flushiter);
-	}
-}
-
-static bool
-xfs_dinode_verify(
-	struct xfs_mount	*mp,
-	struct xfs_inode	*ip,
-	struct xfs_dinode	*dip)
-{
-	if (dip->di_magic != cpu_to_be16(XFS_DINODE_MAGIC))
-		return false;
-
-	/* only version 3 or greater inodes are extensively verified here */
-	if (dip->di_version < 3)
-		return true;
-
-	if (!xfs_sb_version_hascrc(&mp->m_sb))
-		return false;
-	if (!xfs_verify_cksum((char *)dip, mp->m_sb.sb_inodesize,
-			      XFS_DINODE_CRC_OFF))
-		return false;
-	if (be64_to_cpu(dip->di_ino) != ip->i_ino)
-		return false;
-	if (!uuid_equal(&dip->di_uuid, &mp->m_sb.sb_uuid))
-		return false;
-	return true;
-}
-
-void
-xfs_dinode_calc_crc(
-	struct xfs_mount	*mp,
-	struct xfs_dinode	*dip)
-{
-	__uint32_t		crc;
-
-	if (dip->di_version < 3)
-		return;
-
-	ASSERT(xfs_sb_version_hascrc(&mp->m_sb));
-	crc = xfs_start_cksum((char *)dip, mp->m_sb.sb_inodesize,
-			      XFS_DINODE_CRC_OFF);
-	dip->di_crc = xfs_end_cksum(crc);
-}
-
-/*
- * Read the disk inode attributes into the in-core inode structure.
- *
- * For version 5 superblocks, if we are initialising a new inode and we are not
- * utilising the XFS_MOUNT_IKEEP inode cluster mode, we can simple build the new
- * inode core with a random generation number. If we are keeping inodes around,
- * we need to read the inode cluster to get the existing generation number off
- * disk. Further, if we are using version 4 superblocks (i.e. v1/v2 inode
- * format) then log recovery is dependent on the di_flushiter field being
- * initialised from the current on-disk value and hence we must also read the
- * inode off disk.
- */
-int
-xfs_iread(
-	xfs_mount_t	*mp,
-	xfs_trans_t	*tp,
-	xfs_inode_t	*ip,
-	uint		iget_flags)
-{
-	xfs_buf_t	*bp;
-	xfs_dinode_t	*dip;
-	int		error;
-
-	/*
-	 * Fill in the location information in the in-core inode.
-	 */
-	error = xfs_imap(mp, tp, ip->i_ino, &ip->i_imap, iget_flags);
-	if (error)
-		return error;
-
-	/* shortcut IO on inode allocation if possible */
-	if ((iget_flags & XFS_IGET_CREATE) &&
-	    xfs_sb_version_hascrc(&mp->m_sb) &&
-	    !(mp->m_flags & XFS_MOUNT_IKEEP)) {
-		/* initialise the on-disk inode core */
-		memset(&ip->i_d, 0, sizeof(ip->i_d));
-		ip->i_d.di_magic = XFS_DINODE_MAGIC;
-		ip->i_d.di_gen = prandom_u32();
-		if (xfs_sb_version_hascrc(&mp->m_sb)) {
-			ip->i_d.di_version = 3;
-			ip->i_d.di_ino = ip->i_ino;
-			uuid_copy(&ip->i_d.di_uuid, &mp->m_sb.sb_uuid);
-		} else
-			ip->i_d.di_version = 2;
-		return 0;
-	}
-
-	/*
-	 * Get pointers to the on-disk inode and the buffer containing it.
-	 */
-	error = xfs_imap_to_bp(mp, tp, &ip->i_imap, &dip, &bp, 0, iget_flags);
-	if (error)
-		return error;
-
-	/* even unallocated inodes are verified */
-	if (!xfs_dinode_verify(mp, ip, dip)) {
-		xfs_alert(mp, "%s: validation failed for inode %lld failed",
-				__func__, ip->i_ino);
-
-		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, dip);
-		error = EFSCORRUPTED;
-		goto out_brelse;
-	}
-
-	/*
-	 * If the on-disk inode is already linked to a directory
-	 * entry, copy all of the inode into the in-core inode.
-	 * xfs_iformat_fork() handles copying in the inode format
-	 * specific information.
-	 * Otherwise, just get the truly permanent information.
-	 */
-	if (dip->di_mode) {
-		xfs_dinode_from_disk(&ip->i_d, dip);
-		error = xfs_iformat_fork(ip, dip);
-		if (error)  {
-#ifdef DEBUG
-			xfs_alert(mp, "%s: xfs_iformat() returned error %d",
-				__func__, error);
-#endif /* DEBUG */
-			goto out_brelse;
-		}
-	} else {
-		/*
-		 * Partial initialisation of the in-core inode. Just the bits
-		 * that xfs_ialloc won't overwrite or relies on being correct.
-		 */
-		ip->i_d.di_magic = be16_to_cpu(dip->di_magic);
-		ip->i_d.di_version = dip->di_version;
-		ip->i_d.di_gen = be32_to_cpu(dip->di_gen);
-		ip->i_d.di_flushiter = be16_to_cpu(dip->di_flushiter);
-
-		if (dip->di_version == 3) {
-			ip->i_d.di_ino = be64_to_cpu(dip->di_ino);
-			uuid_copy(&ip->i_d.di_uuid, &dip->di_uuid);
-		}
-
-		/*
-		 * Make sure to pull in the mode here as well in
-		 * case the inode is released without being used.
-		 * This ensures that xfs_inactive() will see that
-		 * the inode is already free and not try to mess
-		 * with the uninitialized part of it.
-		 */
-		ip->i_d.di_mode = 0;
-	}
-
-	/*
-	 * Automatically convert version 1 inode formats in memory to version 2
-	 * inode format. If the inode is modified, it will get logged and
-	 * rewritten as a version 2 inode. We can do this because we set the
-	 * superblock feature bit for v2 inodes unconditionally during mount
-	 * and it means the reast of the code can assume the inode version is 2
-	 * or higher.
-	 */
-	if (ip->i_d.di_version == 1) {
-		ip->i_d.di_version = 2;
-		memset(&(ip->i_d.di_pad[0]), 0, sizeof(ip->i_d.di_pad));
-		ip->i_d.di_nlink = ip->i_d.di_onlink;
-		ip->i_d.di_onlink = 0;
-		xfs_set_projid(ip, 0);
-	}
-
-	ip->i_delayed_blks = 0;
-
-	/*
-	 * Mark the buffer containing the inode as something to keep
-	 * around for a while.  This helps to keep recently accessed
-	 * meta-data in-core longer.
-	 */
-	xfs_buf_set_ref(bp, XFS_INO_REF);
-
-	/*
-	 * Use xfs_trans_brelse() to release the buffer containing the on-disk
-	 * inode, because it was acquired with xfs_trans_read_buf() in
-	 * xfs_imap_to_bp() above.  If tp is NULL, this is just a normal
-	 * brelse().  If we're within a transaction, then xfs_trans_brelse()
-	 * will only release the buffer if it is not dirty within the
-	 * transaction.  It will be OK to release the buffer in this case,
-	 * because inodes on disk are never destroyed and we will be locking the
-	 * new in-core inode before putting it in the cache where other
-	 * processes can find it.  Thus we don't have to worry about the inode
-	 * being changed just because we released the buffer.
-	 */
- out_brelse:
-	xfs_trans_brelse(tp, bp);
-	return error;
-}