forked from Minki/linux
9af2546508
In xfs_vn_fiemap, we set bvm_count to fi_extent_max + 1 and want to return fi_extent_max extents, but actually it won't work for a sparse file. The reason is that in xfs_getbmap we will calculate holes and set it in 'out', while out is malloced by bmv_count(fi_extent_max+1) which didn't consider holes. So in the worst case, if 'out' vector looks like [hole, extent, hole, extent, hole, ... hole, extent, hole], we will only return half of fi_extent_max extents. This patch add a new parameter BMV_IF_NO_HOLES for bvm_iflags. So with this flags, we don't use our 'out' in xfs_getbmap for a hole. The solution is a bit ugly by just don't increasing index of 'out' vector. I felt that it is not easy to skip it at the very beginning since we have the complicated check and some function like xfs_getbmapx_fix_eof_hole to adjust 'out'. Cc: Dave Chinner <david@fromorbit.com> Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Alex Elder <aelder@sgi.com>
856 lines
19 KiB
C
856 lines
19 KiB
C
/*
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* Copyright (c) 2000-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "xfs.h"
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#include "xfs_fs.h"
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#include "xfs_acl.h"
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#include "xfs_bit.h"
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#include "xfs_log.h"
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#include "xfs_inum.h"
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#include "xfs_trans.h"
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#include "xfs_sb.h"
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#include "xfs_ag.h"
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#include "xfs_alloc.h"
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#include "xfs_quota.h"
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#include "xfs_mount.h"
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#include "xfs_bmap_btree.h"
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#include "xfs_dinode.h"
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#include "xfs_inode.h"
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#include "xfs_bmap.h"
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#include "xfs_rtalloc.h"
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#include "xfs_error.h"
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#include "xfs_itable.h"
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#include "xfs_rw.h"
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#include "xfs_attr.h"
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#include "xfs_buf_item.h"
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#include "xfs_utils.h"
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#include "xfs_vnodeops.h"
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#include "xfs_trace.h"
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#include <linux/capability.h>
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#include <linux/xattr.h>
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#include <linux/namei.h>
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#include <linux/posix_acl.h>
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#include <linux/security.h>
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#include <linux/falloc.h>
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#include <linux/fiemap.h>
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#include <linux/slab.h>
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/*
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* Bring the timestamps in the XFS inode uptodate.
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*
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* Used before writing the inode to disk.
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*/
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void
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xfs_synchronize_times(
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xfs_inode_t *ip)
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{
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struct inode *inode = VFS_I(ip);
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ip->i_d.di_atime.t_sec = (__int32_t)inode->i_atime.tv_sec;
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ip->i_d.di_atime.t_nsec = (__int32_t)inode->i_atime.tv_nsec;
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ip->i_d.di_ctime.t_sec = (__int32_t)inode->i_ctime.tv_sec;
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ip->i_d.di_ctime.t_nsec = (__int32_t)inode->i_ctime.tv_nsec;
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ip->i_d.di_mtime.t_sec = (__int32_t)inode->i_mtime.tv_sec;
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ip->i_d.di_mtime.t_nsec = (__int32_t)inode->i_mtime.tv_nsec;
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}
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/*
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* If the linux inode is valid, mark it dirty.
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* Used when commiting a dirty inode into a transaction so that
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* the inode will get written back by the linux code
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*/
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void
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xfs_mark_inode_dirty_sync(
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xfs_inode_t *ip)
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{
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struct inode *inode = VFS_I(ip);
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if (!(inode->i_state & (I_WILL_FREE|I_FREEING)))
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mark_inode_dirty_sync(inode);
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}
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void
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xfs_mark_inode_dirty(
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xfs_inode_t *ip)
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{
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struct inode *inode = VFS_I(ip);
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if (!(inode->i_state & (I_WILL_FREE|I_FREEING)))
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mark_inode_dirty(inode);
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}
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/*
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* Change the requested timestamp in the given inode.
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* We don't lock across timestamp updates, and we don't log them but
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* we do record the fact that there is dirty information in core.
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*/
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void
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xfs_ichgtime(
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xfs_inode_t *ip,
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int flags)
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{
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struct inode *inode = VFS_I(ip);
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timespec_t tv;
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int sync_it = 0;
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tv = current_fs_time(inode->i_sb);
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if ((flags & XFS_ICHGTIME_MOD) &&
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!timespec_equal(&inode->i_mtime, &tv)) {
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inode->i_mtime = tv;
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sync_it = 1;
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}
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if ((flags & XFS_ICHGTIME_CHG) &&
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!timespec_equal(&inode->i_ctime, &tv)) {
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inode->i_ctime = tv;
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sync_it = 1;
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}
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/*
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* Update complete - now make sure everyone knows that the inode
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* is dirty.
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*/
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if (sync_it)
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xfs_mark_inode_dirty_sync(ip);
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}
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/*
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* Hook in SELinux. This is not quite correct yet, what we really need
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* here (as we do for default ACLs) is a mechanism by which creation of
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* these attrs can be journalled at inode creation time (along with the
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* inode, of course, such that log replay can't cause these to be lost).
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*/
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STATIC int
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xfs_init_security(
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struct inode *inode,
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struct inode *dir)
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{
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struct xfs_inode *ip = XFS_I(inode);
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size_t length;
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void *value;
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unsigned char *name;
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int error;
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error = security_inode_init_security(inode, dir, (char **)&name,
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&value, &length);
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if (error) {
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if (error == -EOPNOTSUPP)
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return 0;
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return -error;
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}
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error = xfs_attr_set(ip, name, value, length, ATTR_SECURE);
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kfree(name);
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kfree(value);
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return error;
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}
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static void
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xfs_dentry_to_name(
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struct xfs_name *namep,
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struct dentry *dentry)
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{
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namep->name = dentry->d_name.name;
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namep->len = dentry->d_name.len;
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}
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STATIC void
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xfs_cleanup_inode(
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struct inode *dir,
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struct inode *inode,
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struct dentry *dentry)
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{
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struct xfs_name teardown;
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/* Oh, the horror.
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* If we can't add the ACL or we fail in
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* xfs_init_security we must back out.
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* ENOSPC can hit here, among other things.
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*/
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xfs_dentry_to_name(&teardown, dentry);
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xfs_remove(XFS_I(dir), &teardown, XFS_I(inode));
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iput(inode);
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}
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STATIC int
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xfs_vn_mknod(
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struct inode *dir,
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struct dentry *dentry,
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int mode,
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dev_t rdev)
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{
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struct inode *inode;
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struct xfs_inode *ip = NULL;
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struct posix_acl *default_acl = NULL;
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struct xfs_name name;
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int error;
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/*
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* Irix uses Missed'em'V split, but doesn't want to see
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* the upper 5 bits of (14bit) major.
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*/
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if (S_ISCHR(mode) || S_ISBLK(mode)) {
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if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff))
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return -EINVAL;
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rdev = sysv_encode_dev(rdev);
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} else {
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rdev = 0;
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}
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if (IS_POSIXACL(dir)) {
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default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT);
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if (IS_ERR(default_acl))
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return -PTR_ERR(default_acl);
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if (!default_acl)
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mode &= ~current_umask();
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}
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xfs_dentry_to_name(&name, dentry);
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error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip, NULL);
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if (unlikely(error))
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goto out_free_acl;
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inode = VFS_I(ip);
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error = xfs_init_security(inode, dir);
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if (unlikely(error))
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goto out_cleanup_inode;
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if (default_acl) {
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error = -xfs_inherit_acl(inode, default_acl);
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if (unlikely(error))
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goto out_cleanup_inode;
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posix_acl_release(default_acl);
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}
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d_instantiate(dentry, inode);
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return -error;
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out_cleanup_inode:
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xfs_cleanup_inode(dir, inode, dentry);
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out_free_acl:
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posix_acl_release(default_acl);
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return -error;
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}
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STATIC int
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xfs_vn_create(
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struct inode *dir,
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struct dentry *dentry,
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int mode,
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struct nameidata *nd)
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{
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return xfs_vn_mknod(dir, dentry, mode, 0);
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}
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STATIC int
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xfs_vn_mkdir(
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struct inode *dir,
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struct dentry *dentry,
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int mode)
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{
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return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0);
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}
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STATIC struct dentry *
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xfs_vn_lookup(
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struct inode *dir,
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struct dentry *dentry,
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struct nameidata *nd)
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{
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struct xfs_inode *cip;
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struct xfs_name name;
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int error;
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if (dentry->d_name.len >= MAXNAMELEN)
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return ERR_PTR(-ENAMETOOLONG);
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xfs_dentry_to_name(&name, dentry);
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error = xfs_lookup(XFS_I(dir), &name, &cip, NULL);
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if (unlikely(error)) {
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if (unlikely(error != ENOENT))
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return ERR_PTR(-error);
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d_add(dentry, NULL);
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return NULL;
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}
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return d_splice_alias(VFS_I(cip), dentry);
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}
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STATIC struct dentry *
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xfs_vn_ci_lookup(
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struct inode *dir,
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struct dentry *dentry,
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struct nameidata *nd)
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{
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struct xfs_inode *ip;
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struct xfs_name xname;
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struct xfs_name ci_name;
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struct qstr dname;
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int error;
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if (dentry->d_name.len >= MAXNAMELEN)
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return ERR_PTR(-ENAMETOOLONG);
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xfs_dentry_to_name(&xname, dentry);
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error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name);
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if (unlikely(error)) {
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if (unlikely(error != ENOENT))
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return ERR_PTR(-error);
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/*
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* call d_add(dentry, NULL) here when d_drop_negative_children
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* is called in xfs_vn_mknod (ie. allow negative dentries
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* with CI filesystems).
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*/
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return NULL;
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}
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/* if exact match, just splice and exit */
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if (!ci_name.name)
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return d_splice_alias(VFS_I(ip), dentry);
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/* else case-insensitive match... */
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dname.name = ci_name.name;
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dname.len = ci_name.len;
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dentry = d_add_ci(dentry, VFS_I(ip), &dname);
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kmem_free(ci_name.name);
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return dentry;
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}
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STATIC int
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xfs_vn_link(
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struct dentry *old_dentry,
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struct inode *dir,
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struct dentry *dentry)
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{
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struct inode *inode = old_dentry->d_inode;
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struct xfs_name name;
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int error;
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xfs_dentry_to_name(&name, dentry);
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error = xfs_link(XFS_I(dir), XFS_I(inode), &name);
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if (unlikely(error))
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return -error;
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atomic_inc(&inode->i_count);
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d_instantiate(dentry, inode);
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return 0;
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}
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STATIC int
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xfs_vn_unlink(
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struct inode *dir,
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struct dentry *dentry)
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{
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struct xfs_name name;
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int error;
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xfs_dentry_to_name(&name, dentry);
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error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode));
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if (error)
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return error;
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/*
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* With unlink, the VFS makes the dentry "negative": no inode,
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* but still hashed. This is incompatible with case-insensitive
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* mode, so invalidate (unhash) the dentry in CI-mode.
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*/
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if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb))
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d_invalidate(dentry);
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return 0;
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}
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STATIC int
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xfs_vn_symlink(
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struct inode *dir,
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struct dentry *dentry,
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const char *symname)
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{
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struct inode *inode;
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struct xfs_inode *cip = NULL;
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struct xfs_name name;
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int error;
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mode_t mode;
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mode = S_IFLNK |
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(irix_symlink_mode ? 0777 & ~current_umask() : S_IRWXUGO);
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xfs_dentry_to_name(&name, dentry);
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error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip, NULL);
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if (unlikely(error))
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goto out;
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inode = VFS_I(cip);
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error = xfs_init_security(inode, dir);
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if (unlikely(error))
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goto out_cleanup_inode;
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d_instantiate(dentry, inode);
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return 0;
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out_cleanup_inode:
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xfs_cleanup_inode(dir, inode, dentry);
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out:
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return -error;
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}
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STATIC int
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xfs_vn_rename(
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struct inode *odir,
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struct dentry *odentry,
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struct inode *ndir,
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struct dentry *ndentry)
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{
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struct inode *new_inode = ndentry->d_inode;
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struct xfs_name oname;
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struct xfs_name nname;
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xfs_dentry_to_name(&oname, odentry);
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xfs_dentry_to_name(&nname, ndentry);
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return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode),
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XFS_I(ndir), &nname, new_inode ?
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XFS_I(new_inode) : NULL);
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}
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/*
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* careful here - this function can get called recursively, so
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* we need to be very careful about how much stack we use.
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* uio is kmalloced for this reason...
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*/
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STATIC void *
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xfs_vn_follow_link(
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struct dentry *dentry,
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struct nameidata *nd)
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{
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char *link;
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int error = -ENOMEM;
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link = kmalloc(MAXPATHLEN+1, GFP_KERNEL);
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if (!link)
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goto out_err;
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error = -xfs_readlink(XFS_I(dentry->d_inode), link);
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if (unlikely(error))
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goto out_kfree;
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nd_set_link(nd, link);
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return NULL;
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out_kfree:
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kfree(link);
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out_err:
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nd_set_link(nd, ERR_PTR(error));
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return NULL;
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}
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STATIC void
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xfs_vn_put_link(
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struct dentry *dentry,
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struct nameidata *nd,
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void *p)
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{
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char *s = nd_get_link(nd);
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if (!IS_ERR(s))
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kfree(s);
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}
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STATIC int
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xfs_vn_getattr(
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struct vfsmount *mnt,
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struct dentry *dentry,
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struct kstat *stat)
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{
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struct inode *inode = dentry->d_inode;
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struct xfs_inode *ip = XFS_I(inode);
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struct xfs_mount *mp = ip->i_mount;
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trace_xfs_getattr(ip);
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if (XFS_FORCED_SHUTDOWN(mp))
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return XFS_ERROR(EIO);
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stat->size = XFS_ISIZE(ip);
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stat->dev = inode->i_sb->s_dev;
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stat->mode = ip->i_d.di_mode;
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stat->nlink = ip->i_d.di_nlink;
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stat->uid = ip->i_d.di_uid;
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stat->gid = ip->i_d.di_gid;
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stat->ino = ip->i_ino;
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stat->atime = inode->i_atime;
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stat->mtime = inode->i_mtime;
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stat->ctime = inode->i_ctime;
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stat->blocks =
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XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks);
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switch (inode->i_mode & S_IFMT) {
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case S_IFBLK:
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case S_IFCHR:
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stat->blksize = BLKDEV_IOSIZE;
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stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
|
|
sysv_minor(ip->i_df.if_u2.if_rdev));
|
|
break;
|
|
default:
|
|
if (XFS_IS_REALTIME_INODE(ip)) {
|
|
/*
|
|
* If the file blocks are being allocated from a
|
|
* realtime volume, then return the inode's realtime
|
|
* extent size or the realtime volume's extent size.
|
|
*/
|
|
stat->blksize =
|
|
xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog;
|
|
} else
|
|
stat->blksize = xfs_preferred_iosize(mp);
|
|
stat->rdev = 0;
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
STATIC int
|
|
xfs_vn_setattr(
|
|
struct dentry *dentry,
|
|
struct iattr *iattr)
|
|
{
|
|
return -xfs_setattr(XFS_I(dentry->d_inode), iattr, 0);
|
|
}
|
|
|
|
STATIC long
|
|
xfs_vn_fallocate(
|
|
struct inode *inode,
|
|
int mode,
|
|
loff_t offset,
|
|
loff_t len)
|
|
{
|
|
long error;
|
|
loff_t new_size = 0;
|
|
xfs_flock64_t bf;
|
|
xfs_inode_t *ip = XFS_I(inode);
|
|
|
|
/* preallocation on directories not yet supported */
|
|
error = -ENODEV;
|
|
if (S_ISDIR(inode->i_mode))
|
|
goto out_error;
|
|
|
|
bf.l_whence = 0;
|
|
bf.l_start = offset;
|
|
bf.l_len = len;
|
|
|
|
xfs_ilock(ip, XFS_IOLOCK_EXCL);
|
|
|
|
/* check the new inode size is valid before allocating */
|
|
if (!(mode & FALLOC_FL_KEEP_SIZE) &&
|
|
offset + len > i_size_read(inode)) {
|
|
new_size = offset + len;
|
|
error = inode_newsize_ok(inode, new_size);
|
|
if (error)
|
|
goto out_unlock;
|
|
}
|
|
|
|
error = -xfs_change_file_space(ip, XFS_IOC_RESVSP, &bf,
|
|
0, XFS_ATTR_NOLOCK);
|
|
if (error)
|
|
goto out_unlock;
|
|
|
|
/* Change file size if needed */
|
|
if (new_size) {
|
|
struct iattr iattr;
|
|
|
|
iattr.ia_valid = ATTR_SIZE;
|
|
iattr.ia_size = new_size;
|
|
error = -xfs_setattr(ip, &iattr, XFS_ATTR_NOLOCK);
|
|
}
|
|
|
|
out_unlock:
|
|
xfs_iunlock(ip, XFS_IOLOCK_EXCL);
|
|
out_error:
|
|
return error;
|
|
}
|
|
|
|
#define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR)
|
|
|
|
/*
|
|
* Call fiemap helper to fill in user data.
|
|
* Returns positive errors to xfs_getbmap.
|
|
*/
|
|
STATIC int
|
|
xfs_fiemap_format(
|
|
void **arg,
|
|
struct getbmapx *bmv,
|
|
int *full)
|
|
{
|
|
int error;
|
|
struct fiemap_extent_info *fieinfo = *arg;
|
|
u32 fiemap_flags = 0;
|
|
u64 logical, physical, length;
|
|
|
|
/* Do nothing for a hole */
|
|
if (bmv->bmv_block == -1LL)
|
|
return 0;
|
|
|
|
logical = BBTOB(bmv->bmv_offset);
|
|
physical = BBTOB(bmv->bmv_block);
|
|
length = BBTOB(bmv->bmv_length);
|
|
|
|
if (bmv->bmv_oflags & BMV_OF_PREALLOC)
|
|
fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN;
|
|
else if (bmv->bmv_oflags & BMV_OF_DELALLOC) {
|
|
fiemap_flags |= FIEMAP_EXTENT_DELALLOC;
|
|
physical = 0; /* no block yet */
|
|
}
|
|
if (bmv->bmv_oflags & BMV_OF_LAST)
|
|
fiemap_flags |= FIEMAP_EXTENT_LAST;
|
|
|
|
error = fiemap_fill_next_extent(fieinfo, logical, physical,
|
|
length, fiemap_flags);
|
|
if (error > 0) {
|
|
error = 0;
|
|
*full = 1; /* user array now full */
|
|
}
|
|
|
|
return -error;
|
|
}
|
|
|
|
STATIC int
|
|
xfs_vn_fiemap(
|
|
struct inode *inode,
|
|
struct fiemap_extent_info *fieinfo,
|
|
u64 start,
|
|
u64 length)
|
|
{
|
|
xfs_inode_t *ip = XFS_I(inode);
|
|
struct getbmapx bm;
|
|
int error;
|
|
|
|
error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS);
|
|
if (error)
|
|
return error;
|
|
|
|
/* Set up bmap header for xfs internal routine */
|
|
bm.bmv_offset = BTOBB(start);
|
|
/* Special case for whole file */
|
|
if (length == FIEMAP_MAX_OFFSET)
|
|
bm.bmv_length = -1LL;
|
|
else
|
|
bm.bmv_length = BTOBB(length);
|
|
|
|
/* We add one because in getbmap world count includes the header */
|
|
bm.bmv_count = !fieinfo->fi_extents_max ? MAXEXTNUM :
|
|
fieinfo->fi_extents_max + 1;
|
|
bm.bmv_count = min_t(__s32, bm.bmv_count,
|
|
(PAGE_SIZE * 16 / sizeof(struct getbmapx)));
|
|
bm.bmv_iflags = BMV_IF_PREALLOC | BMV_IF_NO_HOLES;
|
|
if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR)
|
|
bm.bmv_iflags |= BMV_IF_ATTRFORK;
|
|
if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC))
|
|
bm.bmv_iflags |= BMV_IF_DELALLOC;
|
|
|
|
error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo);
|
|
if (error)
|
|
return -error;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct inode_operations xfs_inode_operations = {
|
|
.check_acl = xfs_check_acl,
|
|
.getattr = xfs_vn_getattr,
|
|
.setattr = xfs_vn_setattr,
|
|
.setxattr = generic_setxattr,
|
|
.getxattr = generic_getxattr,
|
|
.removexattr = generic_removexattr,
|
|
.listxattr = xfs_vn_listxattr,
|
|
.fallocate = xfs_vn_fallocate,
|
|
.fiemap = xfs_vn_fiemap,
|
|
};
|
|
|
|
static const struct inode_operations xfs_dir_inode_operations = {
|
|
.create = xfs_vn_create,
|
|
.lookup = xfs_vn_lookup,
|
|
.link = xfs_vn_link,
|
|
.unlink = xfs_vn_unlink,
|
|
.symlink = xfs_vn_symlink,
|
|
.mkdir = xfs_vn_mkdir,
|
|
/*
|
|
* Yes, XFS uses the same method for rmdir and unlink.
|
|
*
|
|
* There are some subtile differences deeper in the code,
|
|
* but we use S_ISDIR to check for those.
|
|
*/
|
|
.rmdir = xfs_vn_unlink,
|
|
.mknod = xfs_vn_mknod,
|
|
.rename = xfs_vn_rename,
|
|
.check_acl = xfs_check_acl,
|
|
.getattr = xfs_vn_getattr,
|
|
.setattr = xfs_vn_setattr,
|
|
.setxattr = generic_setxattr,
|
|
.getxattr = generic_getxattr,
|
|
.removexattr = generic_removexattr,
|
|
.listxattr = xfs_vn_listxattr,
|
|
};
|
|
|
|
static const struct inode_operations xfs_dir_ci_inode_operations = {
|
|
.create = xfs_vn_create,
|
|
.lookup = xfs_vn_ci_lookup,
|
|
.link = xfs_vn_link,
|
|
.unlink = xfs_vn_unlink,
|
|
.symlink = xfs_vn_symlink,
|
|
.mkdir = xfs_vn_mkdir,
|
|
/*
|
|
* Yes, XFS uses the same method for rmdir and unlink.
|
|
*
|
|
* There are some subtile differences deeper in the code,
|
|
* but we use S_ISDIR to check for those.
|
|
*/
|
|
.rmdir = xfs_vn_unlink,
|
|
.mknod = xfs_vn_mknod,
|
|
.rename = xfs_vn_rename,
|
|
.check_acl = xfs_check_acl,
|
|
.getattr = xfs_vn_getattr,
|
|
.setattr = xfs_vn_setattr,
|
|
.setxattr = generic_setxattr,
|
|
.getxattr = generic_getxattr,
|
|
.removexattr = generic_removexattr,
|
|
.listxattr = xfs_vn_listxattr,
|
|
};
|
|
|
|
static const struct inode_operations xfs_symlink_inode_operations = {
|
|
.readlink = generic_readlink,
|
|
.follow_link = xfs_vn_follow_link,
|
|
.put_link = xfs_vn_put_link,
|
|
.check_acl = xfs_check_acl,
|
|
.getattr = xfs_vn_getattr,
|
|
.setattr = xfs_vn_setattr,
|
|
.setxattr = generic_setxattr,
|
|
.getxattr = generic_getxattr,
|
|
.removexattr = generic_removexattr,
|
|
.listxattr = xfs_vn_listxattr,
|
|
};
|
|
|
|
STATIC void
|
|
xfs_diflags_to_iflags(
|
|
struct inode *inode,
|
|
struct xfs_inode *ip)
|
|
{
|
|
if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE)
|
|
inode->i_flags |= S_IMMUTABLE;
|
|
else
|
|
inode->i_flags &= ~S_IMMUTABLE;
|
|
if (ip->i_d.di_flags & XFS_DIFLAG_APPEND)
|
|
inode->i_flags |= S_APPEND;
|
|
else
|
|
inode->i_flags &= ~S_APPEND;
|
|
if (ip->i_d.di_flags & XFS_DIFLAG_SYNC)
|
|
inode->i_flags |= S_SYNC;
|
|
else
|
|
inode->i_flags &= ~S_SYNC;
|
|
if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME)
|
|
inode->i_flags |= S_NOATIME;
|
|
else
|
|
inode->i_flags &= ~S_NOATIME;
|
|
}
|
|
|
|
/*
|
|
* Initialize the Linux inode, set up the operation vectors and
|
|
* unlock the inode.
|
|
*
|
|
* When reading existing inodes from disk this is called directly
|
|
* from xfs_iget, when creating a new inode it is called from
|
|
* xfs_ialloc after setting up the inode.
|
|
*
|
|
* We are always called with an uninitialised linux inode here.
|
|
* We need to initialise the necessary fields and take a reference
|
|
* on it.
|
|
*/
|
|
void
|
|
xfs_setup_inode(
|
|
struct xfs_inode *ip)
|
|
{
|
|
struct inode *inode = &ip->i_vnode;
|
|
|
|
inode->i_ino = ip->i_ino;
|
|
inode->i_state = I_NEW;
|
|
inode_add_to_lists(ip->i_mount->m_super, inode);
|
|
|
|
inode->i_mode = ip->i_d.di_mode;
|
|
inode->i_nlink = ip->i_d.di_nlink;
|
|
inode->i_uid = ip->i_d.di_uid;
|
|
inode->i_gid = ip->i_d.di_gid;
|
|
|
|
switch (inode->i_mode & S_IFMT) {
|
|
case S_IFBLK:
|
|
case S_IFCHR:
|
|
inode->i_rdev =
|
|
MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
|
|
sysv_minor(ip->i_df.if_u2.if_rdev));
|
|
break;
|
|
default:
|
|
inode->i_rdev = 0;
|
|
break;
|
|
}
|
|
|
|
inode->i_generation = ip->i_d.di_gen;
|
|
i_size_write(inode, ip->i_d.di_size);
|
|
inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec;
|
|
inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec;
|
|
inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec;
|
|
inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec;
|
|
inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec;
|
|
inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec;
|
|
xfs_diflags_to_iflags(inode, ip);
|
|
|
|
switch (inode->i_mode & S_IFMT) {
|
|
case S_IFREG:
|
|
inode->i_op = &xfs_inode_operations;
|
|
inode->i_fop = &xfs_file_operations;
|
|
inode->i_mapping->a_ops = &xfs_address_space_operations;
|
|
break;
|
|
case S_IFDIR:
|
|
if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb))
|
|
inode->i_op = &xfs_dir_ci_inode_operations;
|
|
else
|
|
inode->i_op = &xfs_dir_inode_operations;
|
|
inode->i_fop = &xfs_dir_file_operations;
|
|
break;
|
|
case S_IFLNK:
|
|
inode->i_op = &xfs_symlink_inode_operations;
|
|
if (!(ip->i_df.if_flags & XFS_IFINLINE))
|
|
inode->i_mapping->a_ops = &xfs_address_space_operations;
|
|
break;
|
|
default:
|
|
inode->i_op = &xfs_inode_operations;
|
|
init_special_inode(inode, inode->i_mode, inode->i_rdev);
|
|
break;
|
|
}
|
|
|
|
xfs_iflags_clear(ip, XFS_INEW);
|
|
barrier();
|
|
|
|
unlock_new_inode(inode);
|
|
}
|