2005-04-16 16:20:36 -06:00
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/*
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2005-11-01 20:58:39 -07:00
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* Copyright (c) 2000-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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2005-04-16 16:20:36 -06:00
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*
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2005-11-01 20:58:39 -07:00
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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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2005-04-16 16:20:36 -06:00
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* published by the Free Software Foundation.
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*
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2005-11-01 20:58:39 -07:00
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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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2005-04-16 16:20:36 -06:00
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*
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2005-11-01 20:58:39 -07:00
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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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2005-04-16 16:20:36 -06:00
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*/
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#include "xfs.h"
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#include "xfs_fs.h"
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2005-11-01 20:38:42 -07:00
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#include "xfs_bit.h"
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2005-04-16 16:20:36 -06:00
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#include "xfs_log.h"
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2005-11-01 20:38:42 -07:00
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#include "xfs_inum.h"
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2005-04-16 16:20:36 -06:00
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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_dir2.h"
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#include "xfs_alloc.h"
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#include "xfs_dmapi.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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2005-11-01 20:38:42 -07:00
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#include "xfs_alloc_btree.h"
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2005-04-16 16:20:36 -06:00
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#include "xfs_ialloc_btree.h"
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#include "xfs_dir2_sf.h"
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2005-11-01 20:38:42 -07:00
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#include "xfs_attr_sf.h"
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2005-04-16 16:20:36 -06:00
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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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2005-11-01 20:38:42 -07:00
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#include "xfs_btree.h"
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#include "xfs_ialloc.h"
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2005-04-16 16:20:36 -06:00
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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_acl.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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2007-08-28 18:58:01 -06:00
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#include "xfs_vnodeops.h"
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2005-04-16 16:20:36 -06:00
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2006-01-11 13:17:46 -07:00
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#include <linux/capability.h>
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2005-04-16 16:20:36 -06:00
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#include <linux/xattr.h>
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#include <linux/namei.h>
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2006-01-10 21:35:44 -07:00
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#include <linux/security.h>
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2005-04-16 16:20:36 -06:00
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2006-01-10 21:35:17 -07:00
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/*
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* Bring the atime in the XFS inode uptodate.
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* Used before logging the inode to disk or when the Linux inode goes away.
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*/
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void
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xfs_synchronize_atime(
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xfs_inode_t *ip)
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{
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2006-06-09 01:00:52 -06:00
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bhv_vnode_t *vp;
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2006-01-10 21:35:17 -07:00
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vp = XFS_ITOV_NULL(ip);
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if (vp) {
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2007-08-28 19:53:12 -06:00
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ip->i_d.di_atime.t_sec = (__int32_t)vp->i_atime.tv_sec;
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ip->i_d.di_atime.t_nsec = (__int32_t)vp->i_atime.tv_nsec;
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2006-01-10 21:35:17 -07:00
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}
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}
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2005-11-01 17:43:58 -07:00
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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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* NOTE -- callers MUST combine XFS_ICHGTIME_MOD or XFS_ICHGTIME_CHG
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* with XFS_ICHGTIME_ACC to be sure that access time
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* update will take. Calling first with XFS_ICHGTIME_ACC
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* and then XFS_ICHGTIME_MOD may fail to modify the access
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* timestamp if the filesystem is mounted noacctm.
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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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2006-03-16 23:25:36 -07:00
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struct inode *inode = vn_to_inode(XFS_ITOV(ip));
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2005-11-01 17:43:58 -07:00
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timespec_t tv;
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nanotime(&tv);
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if (flags & XFS_ICHGTIME_MOD) {
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inode->i_mtime = tv;
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ip->i_d.di_mtime.t_sec = (__int32_t)tv.tv_sec;
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ip->i_d.di_mtime.t_nsec = (__int32_t)tv.tv_nsec;
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}
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if (flags & XFS_ICHGTIME_ACC) {
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inode->i_atime = tv;
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ip->i_d.di_atime.t_sec = (__int32_t)tv.tv_sec;
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ip->i_d.di_atime.t_nsec = (__int32_t)tv.tv_nsec;
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}
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if (flags & XFS_ICHGTIME_CHG) {
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inode->i_ctime = tv;
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ip->i_d.di_ctime.t_sec = (__int32_t)tv.tv_sec;
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ip->i_d.di_ctime.t_nsec = (__int32_t)tv.tv_nsec;
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}
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/*
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* We update the i_update_core field _after_ changing
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* the timestamps in order to coordinate properly with
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* xfs_iflush() so that we don't lose timestamp updates.
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* This keeps us from having to hold the inode lock
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* while doing this. We use the SYNCHRONIZE macro to
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* ensure that the compiler does not reorder the update
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* of i_update_core above the timestamp updates above.
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*/
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SYNCHRONIZE();
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ip->i_update_core = 1;
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2007-12-06 20:09:11 -07:00
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if (!(inode->i_state & I_NEW))
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2005-11-01 17:43:58 -07:00
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mark_inode_dirty_sync(inode);
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}
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/*
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* Variant on the above which avoids querying the system clock
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* in situations where we know the Linux inode timestamps have
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* just been updated (and so we can update our inode cheaply).
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*/
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void
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xfs_ichgtime_fast(
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xfs_inode_t *ip,
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struct inode *inode,
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int flags)
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{
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timespec_t *tvp;
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/*
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2006-01-10 21:35:17 -07:00
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* Atime updates for read() & friends are handled lazily now, and
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* explicit updates must go through xfs_ichgtime()
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2005-11-01 17:43:58 -07:00
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*/
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2006-01-10 21:35:17 -07:00
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ASSERT((flags & XFS_ICHGTIME_ACC) == 0);
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2005-11-01 17:43:58 -07:00
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/*
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2006-01-10 21:35:17 -07:00
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* We're not supposed to change timestamps in readonly-mounted
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* filesystems. Throw it away if anyone asks us.
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2005-11-01 17:43:58 -07:00
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*/
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2006-01-10 21:35:17 -07:00
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if (unlikely(IS_RDONLY(inode)))
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2005-11-01 17:43:58 -07:00
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return;
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if (flags & XFS_ICHGTIME_MOD) {
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tvp = &inode->i_mtime;
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ip->i_d.di_mtime.t_sec = (__int32_t)tvp->tv_sec;
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ip->i_d.di_mtime.t_nsec = (__int32_t)tvp->tv_nsec;
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}
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if (flags & XFS_ICHGTIME_CHG) {
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tvp = &inode->i_ctime;
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ip->i_d.di_ctime.t_sec = (__int32_t)tvp->tv_sec;
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ip->i_d.di_ctime.t_nsec = (__int32_t)tvp->tv_nsec;
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}
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/*
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* We update the i_update_core field _after_ changing
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* the timestamps in order to coordinate properly with
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* xfs_iflush() so that we don't lose timestamp updates.
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* This keeps us from having to hold the inode lock
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* while doing this. We use the SYNCHRONIZE macro to
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* ensure that the compiler does not reorder the update
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* of i_update_core above the timestamp updates above.
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*/
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SYNCHRONIZE();
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ip->i_update_core = 1;
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2007-12-06 20:09:11 -07:00
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if (!(inode->i_state & I_NEW))
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2005-11-01 17:43:58 -07:00
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mark_inode_dirty_sync(inode);
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}
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2005-04-16 16:20:36 -06:00
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/*
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* Pull the link count and size up from the xfs inode to the linux inode
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*/
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STATIC void
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2006-03-13 20:00:51 -07:00
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xfs_validate_fields(
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2007-09-18 23:27:39 -06:00
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struct inode *inode)
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2005-04-16 16:20:36 -06:00
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{
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2007-09-18 23:27:39 -06:00
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struct xfs_inode *ip = XFS_I(inode);
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loff_t size;
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inode->i_nlink = ip->i_d.di_nlink;
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inode->i_blocks =
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XFS_FSB_TO_BB(ip->i_mount, ip->i_d.di_nblocks +
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ip->i_delayed_blks);
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/* we're under i_sem so i_size can't change under us */
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size = XFS_ISIZE(ip);
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if (i_size_read(inode) != size)
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i_size_write(inode, size);
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2005-04-16 16:20:36 -06:00
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}
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2006-01-10 21:35:44 -07:00
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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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2006-03-13 20:00:51 -07:00
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xfs_init_security(
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2006-06-09 01:00:52 -06:00
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bhv_vnode_t *vp,
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2006-01-10 21:35:44 -07:00
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struct inode *dir)
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{
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2006-03-16 23:25:36 -07:00
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struct inode *ip = vn_to_inode(vp);
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2006-01-10 21:35:44 -07:00
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size_t length;
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void *value;
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char *name;
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int error;
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error = security_inode_init_security(ip, dir, &name, &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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2007-08-28 18:58:01 -06:00
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error = xfs_attr_set(XFS_I(ip), name, value,
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length, ATTR_SECURE);
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2006-01-10 21:35:44 -07:00
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if (!error)
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2007-08-28 19:44:37 -06:00
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xfs_iflags_set(XFS_I(ip), XFS_IMODIFIED);
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2006-01-10 21:35:44 -07:00
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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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2005-04-16 16:20:36 -06:00
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/*
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* Determine whether a process has a valid fs_struct (kernel daemons
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* like knfsd don't have an fs_struct).
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*
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* XXX(hch): nfsd is broken, better fix it instead.
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*/
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2007-02-10 00:34:56 -07:00
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STATIC_INLINE int
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2006-03-13 20:00:51 -07:00
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xfs_has_fs_struct(struct task_struct *task)
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2005-04-16 16:20:36 -06:00
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{
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return (task->fs != init_task.fs);
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}
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2007-02-10 00:34:56 -07:00
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STATIC void
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2006-03-13 20:00:51 -07:00
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xfs_cleanup_inode(
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2007-08-28 18:58:01 -06:00
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struct inode *dir,
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2006-06-09 01:00:52 -06:00
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bhv_vnode_t *vp,
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2006-03-13 19:33:36 -07:00
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struct dentry *dentry,
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2006-01-31 18:14:34 -07:00
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int mode)
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{
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struct dentry teardown = {};
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/* Oh, the horror.
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2006-03-13 19:33:36 -07:00
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* If we can't add the ACL or we fail in
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2006-03-13 20:00:51 -07:00
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* xfs_init_security we must back out.
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2006-01-31 18:14:34 -07:00
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* ENOSPC can hit here, among other things.
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*/
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2006-03-16 23:25:36 -07:00
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teardown.d_inode = vn_to_inode(vp);
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2006-01-31 18:14:34 -07:00
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teardown.d_name = dentry->d_name;
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if (S_ISDIR(mode))
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2007-08-28 18:58:01 -06:00
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xfs_rmdir(XFS_I(dir), &teardown);
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2006-01-31 18:14:34 -07:00
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else
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2007-08-28 18:58:01 -06:00
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xfs_remove(XFS_I(dir), &teardown);
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2006-01-31 18:14:34 -07:00
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VN_RELE(vp);
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}
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2005-04-16 16:20:36 -06:00
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STATIC int
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2006-03-13 20:00:51 -07:00
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xfs_vn_mknod(
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2005-04-16 16:20:36 -06:00
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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 *ip;
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2006-06-09 01:00:52 -06:00
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bhv_vnode_t *vp = NULL, *dvp = vn_from_inode(dir);
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2005-04-16 16:20:36 -06:00
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xfs_acl_t *default_acl = NULL;
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attrexists_t test_default_acl = _ACL_DEFAULT_EXISTS;
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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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2006-03-13 19:33:36 -07:00
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if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff))
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2005-04-16 16:20:36 -06:00
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return -EINVAL;
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2006-03-13 19:33:36 -07:00
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if (unlikely(test_default_acl && test_default_acl(dvp))) {
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if (!_ACL_ALLOC(default_acl)) {
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2005-04-16 16:20:36 -06:00
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return -ENOMEM;
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2006-03-13 19:33:36 -07:00
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}
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2005-04-16 16:20:36 -06:00
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if (!_ACL_GET_DEFAULT(dvp, default_acl)) {
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_ACL_FREE(default_acl);
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default_acl = NULL;
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}
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}
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2006-03-13 20:00:51 -07:00
|
|
|
if (IS_POSIXACL(dir) && !default_acl && xfs_has_fs_struct(current))
|
2005-04-16 16:20:36 -06:00
|
|
|
mode &= ~current->fs->umask;
|
|
|
|
|
|
|
|
switch (mode & S_IFMT) {
|
|
|
|
case S_IFCHR: case S_IFBLK: case S_IFIFO: case S_IFSOCK:
|
2007-10-11 02:09:12 -06:00
|
|
|
rdev = sysv_encode_dev(rdev);
|
2005-04-16 16:20:36 -06:00
|
|
|
case S_IFREG:
|
2007-10-11 02:09:12 -06:00
|
|
|
error = xfs_create(XFS_I(dir), dentry, mode, rdev, &vp, NULL);
|
2005-04-16 16:20:36 -06:00
|
|
|
break;
|
|
|
|
case S_IFDIR:
|
2007-10-11 02:09:12 -06:00
|
|
|
error = xfs_mkdir(XFS_I(dir), dentry, mode, &vp, NULL);
|
2005-04-16 16:20:36 -06:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
error = EINVAL;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2006-03-13 19:33:36 -07:00
|
|
|
if (unlikely(!error)) {
|
2006-03-13 20:00:51 -07:00
|
|
|
error = xfs_init_security(vp, dir);
|
2006-01-31 18:14:34 -07:00
|
|
|
if (error)
|
2007-08-28 18:58:01 -06:00
|
|
|
xfs_cleanup_inode(dir, vp, dentry, mode);
|
2006-01-31 18:14:34 -07:00
|
|
|
}
|
2006-01-10 21:35:44 -07:00
|
|
|
|
2006-03-13 19:33:36 -07:00
|
|
|
if (unlikely(default_acl)) {
|
2005-04-16 16:20:36 -06:00
|
|
|
if (!error) {
|
2007-10-11 02:09:12 -06:00
|
|
|
error = _ACL_INHERIT(vp, mode, default_acl);
|
2006-03-13 19:33:36 -07:00
|
|
|
if (!error)
|
2007-08-28 19:53:12 -06:00
|
|
|
xfs_iflags_set(XFS_I(vp), XFS_IMODIFIED);
|
2006-01-31 18:14:34 -07:00
|
|
|
else
|
2007-08-28 18:58:01 -06:00
|
|
|
xfs_cleanup_inode(dir, vp, dentry, mode);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
_ACL_FREE(default_acl);
|
|
|
|
}
|
|
|
|
|
2006-03-13 19:33:36 -07:00
|
|
|
if (likely(!error)) {
|
2005-04-16 16:20:36 -06:00
|
|
|
ASSERT(vp);
|
2006-03-16 23:25:36 -07:00
|
|
|
ip = vn_to_inode(vp);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-12-20 16:58:56 -07:00
|
|
|
if (S_ISDIR(mode))
|
2007-09-18 23:27:39 -06:00
|
|
|
xfs_validate_fields(ip);
|
2005-04-16 16:20:36 -06:00
|
|
|
d_instantiate(dentry, ip);
|
2007-09-18 23:27:39 -06:00
|
|
|
xfs_validate_fields(dir);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
return -error;
|
|
|
|
}
|
|
|
|
|
|
|
|
STATIC int
|
2006-03-13 20:00:51 -07:00
|
|
|
xfs_vn_create(
|
2005-04-16 16:20:36 -06:00
|
|
|
struct inode *dir,
|
|
|
|
struct dentry *dentry,
|
|
|
|
int mode,
|
|
|
|
struct nameidata *nd)
|
|
|
|
{
|
2006-03-13 20:00:51 -07:00
|
|
|
return xfs_vn_mknod(dir, dentry, mode, 0);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
STATIC int
|
2006-03-13 20:00:51 -07:00
|
|
|
xfs_vn_mkdir(
|
2005-04-16 16:20:36 -06:00
|
|
|
struct inode *dir,
|
|
|
|
struct dentry *dentry,
|
|
|
|
int mode)
|
|
|
|
{
|
2006-03-13 20:00:51 -07:00
|
|
|
return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
STATIC struct dentry *
|
2006-03-13 20:00:51 -07:00
|
|
|
xfs_vn_lookup(
|
2005-04-16 16:20:36 -06:00
|
|
|
struct inode *dir,
|
|
|
|
struct dentry *dentry,
|
|
|
|
struct nameidata *nd)
|
|
|
|
{
|
2007-08-28 18:58:01 -06:00
|
|
|
bhv_vnode_t *cvp;
|
2005-04-16 16:20:36 -06:00
|
|
|
int error;
|
|
|
|
|
|
|
|
if (dentry->d_name.len >= MAXNAMELEN)
|
|
|
|
return ERR_PTR(-ENAMETOOLONG);
|
|
|
|
|
2007-08-28 18:58:01 -06:00
|
|
|
error = xfs_lookup(XFS_I(dir), dentry, &cvp);
|
2006-06-09 01:00:52 -06:00
|
|
|
if (unlikely(error)) {
|
2005-04-16 16:20:36 -06:00
|
|
|
if (unlikely(error != ENOENT))
|
|
|
|
return ERR_PTR(-error);
|
|
|
|
d_add(dentry, NULL);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2006-03-16 23:25:36 -07:00
|
|
|
return d_splice_alias(vn_to_inode(cvp), dentry);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
STATIC int
|
2006-03-13 20:00:51 -07:00
|
|
|
xfs_vn_link(
|
2005-04-16 16:20:36 -06:00
|
|
|
struct dentry *old_dentry,
|
|
|
|
struct inode *dir,
|
|
|
|
struct dentry *dentry)
|
|
|
|
{
|
|
|
|
struct inode *ip; /* inode of guy being linked to */
|
2006-06-09 01:00:52 -06:00
|
|
|
bhv_vnode_t *vp; /* vp of name being linked */
|
2005-04-16 16:20:36 -06:00
|
|
|
int error;
|
|
|
|
|
|
|
|
ip = old_dentry->d_inode; /* inode being linked to */
|
2006-03-16 23:25:36 -07:00
|
|
|
vp = vn_from_inode(ip);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2006-06-27 00:13:46 -06:00
|
|
|
VN_HOLD(vp);
|
2007-08-28 18:58:01 -06:00
|
|
|
error = xfs_link(XFS_I(dir), vp, dentry);
|
2006-06-27 00:13:46 -06:00
|
|
|
if (unlikely(error)) {
|
|
|
|
VN_RELE(vp);
|
|
|
|
} else {
|
2007-08-28 19:44:37 -06:00
|
|
|
xfs_iflags_set(XFS_I(dir), XFS_IMODIFIED);
|
2007-09-18 23:27:39 -06:00
|
|
|
xfs_validate_fields(ip);
|
2005-04-16 16:20:36 -06:00
|
|
|
d_instantiate(dentry, ip);
|
|
|
|
}
|
|
|
|
return -error;
|
|
|
|
}
|
|
|
|
|
|
|
|
STATIC int
|
2006-03-13 20:00:51 -07:00
|
|
|
xfs_vn_unlink(
|
2005-04-16 16:20:36 -06:00
|
|
|
struct inode *dir,
|
|
|
|
struct dentry *dentry)
|
|
|
|
{
|
|
|
|
struct inode *inode;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
inode = dentry->d_inode;
|
|
|
|
|
2007-08-28 18:58:01 -06:00
|
|
|
error = xfs_remove(XFS_I(dir), dentry);
|
2006-03-13 19:33:36 -07:00
|
|
|
if (likely(!error)) {
|
2007-09-18 23:27:39 -06:00
|
|
|
xfs_validate_fields(dir); /* size needs update */
|
|
|
|
xfs_validate_fields(inode);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
return -error;
|
|
|
|
}
|
|
|
|
|
|
|
|
STATIC int
|
2006-03-13 20:00:51 -07:00
|
|
|
xfs_vn_symlink(
|
2005-04-16 16:20:36 -06:00
|
|
|
struct inode *dir,
|
|
|
|
struct dentry *dentry,
|
|
|
|
const char *symname)
|
|
|
|
{
|
|
|
|
struct inode *ip;
|
2006-06-09 01:00:52 -06:00
|
|
|
bhv_vnode_t *cvp; /* used to lookup symlink to put in dentry */
|
2005-04-16 16:20:36 -06:00
|
|
|
int error;
|
2007-10-11 02:09:12 -06:00
|
|
|
mode_t mode;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
cvp = NULL;
|
|
|
|
|
2007-10-11 02:09:12 -06:00
|
|
|
mode = S_IFLNK |
|
2005-09-02 00:46:51 -06:00
|
|
|
(irix_symlink_mode ? 0777 & ~current->fs->umask : S_IRWXUGO);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-10-11 02:09:12 -06:00
|
|
|
error = xfs_symlink(XFS_I(dir), dentry, (char *)symname, mode,
|
|
|
|
&cvp, NULL);
|
2006-01-15 21:54:05 -07:00
|
|
|
if (likely(!error && cvp)) {
|
2006-03-13 20:00:51 -07:00
|
|
|
error = xfs_init_security(cvp, dir);
|
2006-01-15 21:54:05 -07:00
|
|
|
if (likely(!error)) {
|
2006-03-16 23:25:36 -07:00
|
|
|
ip = vn_to_inode(cvp);
|
2006-01-15 21:54:05 -07:00
|
|
|
d_instantiate(dentry, ip);
|
2007-09-18 23:27:39 -06:00
|
|
|
xfs_validate_fields(dir);
|
|
|
|
xfs_validate_fields(ip);
|
2006-03-16 23:26:34 -07:00
|
|
|
} else {
|
2007-08-28 18:58:01 -06:00
|
|
|
xfs_cleanup_inode(dir, cvp, dentry, 0);
|
2006-01-15 21:54:05 -07:00
|
|
|
}
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
return -error;
|
|
|
|
}
|
|
|
|
|
|
|
|
STATIC int
|
2006-03-13 20:00:51 -07:00
|
|
|
xfs_vn_rmdir(
|
2005-04-16 16:20:36 -06:00
|
|
|
struct inode *dir,
|
|
|
|
struct dentry *dentry)
|
|
|
|
{
|
|
|
|
struct inode *inode = dentry->d_inode;
|
|
|
|
int error;
|
|
|
|
|
2007-08-28 18:58:01 -06:00
|
|
|
error = xfs_rmdir(XFS_I(dir), dentry);
|
2006-03-13 19:33:36 -07:00
|
|
|
if (likely(!error)) {
|
2007-09-18 23:27:39 -06:00
|
|
|
xfs_validate_fields(inode);
|
|
|
|
xfs_validate_fields(dir);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
return -error;
|
|
|
|
}
|
|
|
|
|
|
|
|
STATIC int
|
2006-03-13 20:00:51 -07:00
|
|
|
xfs_vn_rename(
|
2005-04-16 16:20:36 -06:00
|
|
|
struct inode *odir,
|
|
|
|
struct dentry *odentry,
|
|
|
|
struct inode *ndir,
|
|
|
|
struct dentry *ndentry)
|
|
|
|
{
|
|
|
|
struct inode *new_inode = ndentry->d_inode;
|
2006-06-09 01:00:52 -06:00
|
|
|
bhv_vnode_t *tvp; /* target directory */
|
2005-04-16 16:20:36 -06:00
|
|
|
int error;
|
|
|
|
|
2006-03-16 23:25:36 -07:00
|
|
|
tvp = vn_from_inode(ndir);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-08-28 18:58:01 -06:00
|
|
|
error = xfs_rename(XFS_I(odir), odentry, tvp, ndentry);
|
2006-03-13 19:33:36 -07:00
|
|
|
if (likely(!error)) {
|
|
|
|
if (new_inode)
|
2007-09-18 23:27:39 -06:00
|
|
|
xfs_validate_fields(new_inode);
|
|
|
|
xfs_validate_fields(odir);
|
2006-03-13 19:33:36 -07:00
|
|
|
if (ndir != odir)
|
2007-09-18 23:27:39 -06:00
|
|
|
xfs_validate_fields(ndir);
|
2006-03-13 19:33:36 -07:00
|
|
|
}
|
|
|
|
return -error;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* careful here - this function can get called recursively, so
|
|
|
|
* we need to be very careful about how much stack we use.
|
|
|
|
* uio is kmalloced for this reason...
|
|
|
|
*/
|
[PATCH] Fix up symlink function pointers
This fixes up the symlink functions for the calling convention change:
* afs, autofs4, befs, devfs, freevxfs, jffs2, jfs, ncpfs, procfs,
smbfs, sysvfs, ufs, xfs - prototype change for ->follow_link()
* befs, smbfs, xfs - same for ->put_link()
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-08-19 17:17:39 -06:00
|
|
|
STATIC void *
|
2006-03-13 20:00:51 -07:00
|
|
|
xfs_vn_follow_link(
|
2005-04-16 16:20:36 -06:00
|
|
|
struct dentry *dentry,
|
|
|
|
struct nameidata *nd)
|
|
|
|
{
|
|
|
|
char *link;
|
2007-08-27 21:59:03 -06:00
|
|
|
int error = -ENOMEM;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2006-09-27 02:49:39 -06:00
|
|
|
link = kmalloc(MAXPATHLEN+1, GFP_KERNEL);
|
2007-08-27 21:59:03 -06:00
|
|
|
if (!link)
|
|
|
|
goto out_err;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-08-28 18:58:01 -06:00
|
|
|
error = -xfs_readlink(XFS_I(dentry->d_inode), link);
|
2007-08-27 21:59:03 -06:00
|
|
|
if (unlikely(error))
|
|
|
|
goto out_kfree;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
nd_set_link(nd, link);
|
[PATCH] Fix up symlink function pointers
This fixes up the symlink functions for the calling convention change:
* afs, autofs4, befs, devfs, freevxfs, jffs2, jfs, ncpfs, procfs,
smbfs, sysvfs, ufs, xfs - prototype change for ->follow_link()
* befs, smbfs, xfs - same for ->put_link()
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-08-19 17:17:39 -06:00
|
|
|
return NULL;
|
2007-08-27 21:59:03 -06:00
|
|
|
|
|
|
|
out_kfree:
|
|
|
|
kfree(link);
|
|
|
|
out_err:
|
|
|
|
nd_set_link(nd, ERR_PTR(error));
|
|
|
|
return NULL;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
2005-09-04 19:47:01 -06:00
|
|
|
STATIC void
|
2006-03-13 20:00:51 -07:00
|
|
|
xfs_vn_put_link(
|
2005-09-04 19:47:01 -06:00
|
|
|
struct dentry *dentry,
|
|
|
|
struct nameidata *nd,
|
|
|
|
void *p)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2005-09-04 19:47:01 -06:00
|
|
|
char *s = nd_get_link(nd);
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
if (!IS_ERR(s))
|
|
|
|
kfree(s);
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef CONFIG_XFS_POSIX_ACL
|
|
|
|
STATIC int
|
2006-03-13 20:00:51 -07:00
|
|
|
xfs_vn_permission(
|
2005-04-16 16:20:36 -06:00
|
|
|
struct inode *inode,
|
|
|
|
int mode,
|
|
|
|
struct nameidata *nd)
|
|
|
|
{
|
2007-08-28 18:58:01 -06:00
|
|
|
return -xfs_access(XFS_I(inode), mode << 6, NULL);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
#else
|
2006-03-13 20:00:51 -07:00
|
|
|
#define xfs_vn_permission NULL
|
2005-04-16 16:20:36 -06:00
|
|
|
#endif
|
|
|
|
|
|
|
|
STATIC int
|
2006-03-13 20:00:51 -07:00
|
|
|
xfs_vn_getattr(
|
2005-04-16 16:20:36 -06:00
|
|
|
struct vfsmount *mnt,
|
|
|
|
struct dentry *dentry,
|
|
|
|
struct kstat *stat)
|
|
|
|
{
|
|
|
|
struct inode *inode = dentry->d_inode;
|
2006-09-27 19:01:22 -06:00
|
|
|
bhv_vattr_t vattr = { .va_mask = XFS_AT_STAT };
|
|
|
|
int error;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-08-28 18:58:01 -06:00
|
|
|
error = xfs_getattr(XFS_I(inode), &vattr, ATTR_LAZY);
|
2006-09-27 19:01:22 -06:00
|
|
|
if (likely(!error)) {
|
|
|
|
stat->size = i_size_read(inode);
|
|
|
|
stat->dev = inode->i_sb->s_dev;
|
|
|
|
stat->rdev = (vattr.va_rdev == 0) ? 0 :
|
|
|
|
MKDEV(sysv_major(vattr.va_rdev) & 0x1ff,
|
|
|
|
sysv_minor(vattr.va_rdev));
|
|
|
|
stat->mode = vattr.va_mode;
|
|
|
|
stat->nlink = vattr.va_nlink;
|
|
|
|
stat->uid = vattr.va_uid;
|
|
|
|
stat->gid = vattr.va_gid;
|
|
|
|
stat->ino = vattr.va_nodeid;
|
|
|
|
stat->atime = vattr.va_atime;
|
|
|
|
stat->mtime = vattr.va_mtime;
|
|
|
|
stat->ctime = vattr.va_ctime;
|
|
|
|
stat->blocks = vattr.va_nblocks;
|
|
|
|
stat->blksize = vattr.va_blocksize;
|
|
|
|
}
|
2006-06-08 22:58:20 -06:00
|
|
|
return -error;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
STATIC int
|
2006-03-13 20:00:51 -07:00
|
|
|
xfs_vn_setattr(
|
2005-04-16 16:20:36 -06:00
|
|
|
struct dentry *dentry,
|
|
|
|
struct iattr *attr)
|
|
|
|
{
|
|
|
|
struct inode *inode = dentry->d_inode;
|
|
|
|
unsigned int ia_valid = attr->ia_valid;
|
2006-06-09 01:07:12 -06:00
|
|
|
bhv_vattr_t vattr = { 0 };
|
2005-04-16 16:20:36 -06:00
|
|
|
int flags = 0;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
if (ia_valid & ATTR_UID) {
|
|
|
|
vattr.va_mask |= XFS_AT_UID;
|
|
|
|
vattr.va_uid = attr->ia_uid;
|
|
|
|
}
|
|
|
|
if (ia_valid & ATTR_GID) {
|
|
|
|
vattr.va_mask |= XFS_AT_GID;
|
|
|
|
vattr.va_gid = attr->ia_gid;
|
|
|
|
}
|
|
|
|
if (ia_valid & ATTR_SIZE) {
|
|
|
|
vattr.va_mask |= XFS_AT_SIZE;
|
|
|
|
vattr.va_size = attr->ia_size;
|
|
|
|
}
|
|
|
|
if (ia_valid & ATTR_ATIME) {
|
|
|
|
vattr.va_mask |= XFS_AT_ATIME;
|
|
|
|
vattr.va_atime = attr->ia_atime;
|
2006-04-10 23:12:45 -06:00
|
|
|
inode->i_atime = attr->ia_atime;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
if (ia_valid & ATTR_MTIME) {
|
|
|
|
vattr.va_mask |= XFS_AT_MTIME;
|
|
|
|
vattr.va_mtime = attr->ia_mtime;
|
|
|
|
}
|
|
|
|
if (ia_valid & ATTR_CTIME) {
|
|
|
|
vattr.va_mask |= XFS_AT_CTIME;
|
|
|
|
vattr.va_ctime = attr->ia_ctime;
|
|
|
|
}
|
|
|
|
if (ia_valid & ATTR_MODE) {
|
|
|
|
vattr.va_mask |= XFS_AT_MODE;
|
|
|
|
vattr.va_mode = attr->ia_mode;
|
|
|
|
if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
|
|
|
|
inode->i_mode &= ~S_ISGID;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET))
|
|
|
|
flags |= ATTR_UTIME;
|
|
|
|
#ifdef ATTR_NO_BLOCK
|
|
|
|
if ((ia_valid & ATTR_NO_BLOCK))
|
|
|
|
flags |= ATTR_NONBLOCK;
|
|
|
|
#endif
|
|
|
|
|
2007-08-28 18:58:01 -06:00
|
|
|
error = xfs_setattr(XFS_I(inode), &vattr, flags, NULL);
|
2006-03-13 19:33:36 -07:00
|
|
|
if (likely(!error))
|
2007-08-28 18:58:01 -06:00
|
|
|
__vn_revalidate(vn_from_inode(inode), &vattr);
|
2006-03-13 19:33:36 -07:00
|
|
|
return -error;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
STATIC void
|
2006-03-13 20:00:51 -07:00
|
|
|
xfs_vn_truncate(
|
2005-04-16 16:20:36 -06:00
|
|
|
struct inode *inode)
|
|
|
|
{
|
2006-03-28 17:44:40 -07:00
|
|
|
block_truncate_page(inode->i_mapping, inode->i_size, xfs_get_blocks);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
STATIC int
|
2006-03-13 20:00:51 -07:00
|
|
|
xfs_vn_setxattr(
|
2005-04-16 16:20:36 -06:00
|
|
|
struct dentry *dentry,
|
|
|
|
const char *name,
|
|
|
|
const void *data,
|
|
|
|
size_t size,
|
|
|
|
int flags)
|
|
|
|
{
|
2006-06-09 01:00:52 -06:00
|
|
|
bhv_vnode_t *vp = vn_from_inode(dentry->d_inode);
|
2005-04-16 16:20:36 -06:00
|
|
|
char *attr = (char *)name;
|
|
|
|
attrnames_t *namesp;
|
|
|
|
int xflags = 0;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
namesp = attr_lookup_namespace(attr, attr_namespaces, ATTR_NAMECOUNT);
|
|
|
|
if (!namesp)
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
attr += namesp->attr_namelen;
|
|
|
|
error = namesp->attr_capable(vp, NULL);
|
|
|
|
if (error)
|
|
|
|
return error;
|
|
|
|
|
|
|
|
/* Convert Linux syscall to XFS internal ATTR flags */
|
|
|
|
if (flags & XATTR_CREATE)
|
|
|
|
xflags |= ATTR_CREATE;
|
|
|
|
if (flags & XATTR_REPLACE)
|
|
|
|
xflags |= ATTR_REPLACE;
|
|
|
|
xflags |= namesp->attr_flag;
|
|
|
|
return namesp->attr_set(vp, attr, (void *)data, size, xflags);
|
|
|
|
}
|
|
|
|
|
|
|
|
STATIC ssize_t
|
2006-03-13 20:00:51 -07:00
|
|
|
xfs_vn_getxattr(
|
2005-04-16 16:20:36 -06:00
|
|
|
struct dentry *dentry,
|
|
|
|
const char *name,
|
|
|
|
void *data,
|
|
|
|
size_t size)
|
|
|
|
{
|
2006-06-09 01:00:52 -06:00
|
|
|
bhv_vnode_t *vp = vn_from_inode(dentry->d_inode);
|
2005-04-16 16:20:36 -06:00
|
|
|
char *attr = (char *)name;
|
|
|
|
attrnames_t *namesp;
|
|
|
|
int xflags = 0;
|
|
|
|
ssize_t error;
|
|
|
|
|
|
|
|
namesp = attr_lookup_namespace(attr, attr_namespaces, ATTR_NAMECOUNT);
|
|
|
|
if (!namesp)
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
attr += namesp->attr_namelen;
|
|
|
|
error = namesp->attr_capable(vp, NULL);
|
|
|
|
if (error)
|
|
|
|
return error;
|
|
|
|
|
|
|
|
/* Convert Linux syscall to XFS internal ATTR flags */
|
|
|
|
if (!size) {
|
|
|
|
xflags |= ATTR_KERNOVAL;
|
|
|
|
data = NULL;
|
|
|
|
}
|
|
|
|
xflags |= namesp->attr_flag;
|
|
|
|
return namesp->attr_get(vp, attr, (void *)data, size, xflags);
|
|
|
|
}
|
|
|
|
|
|
|
|
STATIC ssize_t
|
2006-03-13 20:00:51 -07:00
|
|
|
xfs_vn_listxattr(
|
2005-04-16 16:20:36 -06:00
|
|
|
struct dentry *dentry,
|
|
|
|
char *data,
|
|
|
|
size_t size)
|
|
|
|
{
|
2006-06-09 01:00:52 -06:00
|
|
|
bhv_vnode_t *vp = vn_from_inode(dentry->d_inode);
|
2005-04-16 16:20:36 -06:00
|
|
|
int error, xflags = ATTR_KERNAMELS;
|
|
|
|
ssize_t result;
|
|
|
|
|
|
|
|
if (!size)
|
|
|
|
xflags |= ATTR_KERNOVAL;
|
|
|
|
xflags |= capable(CAP_SYS_ADMIN) ? ATTR_KERNFULLS : ATTR_KERNORMALS;
|
|
|
|
|
|
|
|
error = attr_generic_list(vp, data, size, xflags, &result);
|
|
|
|
if (error < 0)
|
|
|
|
return error;
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
STATIC int
|
2006-03-13 20:00:51 -07:00
|
|
|
xfs_vn_removexattr(
|
2005-04-16 16:20:36 -06:00
|
|
|
struct dentry *dentry,
|
|
|
|
const char *name)
|
|
|
|
{
|
2006-06-09 01:00:52 -06:00
|
|
|
bhv_vnode_t *vp = vn_from_inode(dentry->d_inode);
|
2005-04-16 16:20:36 -06:00
|
|
|
char *attr = (char *)name;
|
|
|
|
attrnames_t *namesp;
|
|
|
|
int xflags = 0;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
namesp = attr_lookup_namespace(attr, attr_namespaces, ATTR_NAMECOUNT);
|
|
|
|
if (!namesp)
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
attr += namesp->attr_namelen;
|
|
|
|
error = namesp->attr_capable(vp, NULL);
|
|
|
|
if (error)
|
|
|
|
return error;
|
|
|
|
xflags |= namesp->attr_flag;
|
|
|
|
return namesp->attr_remove(vp, attr, xflags);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2007-02-12 01:55:40 -07:00
|
|
|
const struct inode_operations xfs_inode_operations = {
|
2006-03-13 20:00:51 -07:00
|
|
|
.permission = xfs_vn_permission,
|
|
|
|
.truncate = xfs_vn_truncate,
|
|
|
|
.getattr = xfs_vn_getattr,
|
|
|
|
.setattr = xfs_vn_setattr,
|
|
|
|
.setxattr = xfs_vn_setxattr,
|
|
|
|
.getxattr = xfs_vn_getxattr,
|
|
|
|
.listxattr = xfs_vn_listxattr,
|
|
|
|
.removexattr = xfs_vn_removexattr,
|
2005-04-16 16:20:36 -06:00
|
|
|
};
|
|
|
|
|
2007-02-12 01:55:40 -07:00
|
|
|
const struct inode_operations xfs_dir_inode_operations = {
|
2006-03-13 20:00:51 -07:00
|
|
|
.create = xfs_vn_create,
|
|
|
|
.lookup = xfs_vn_lookup,
|
|
|
|
.link = xfs_vn_link,
|
|
|
|
.unlink = xfs_vn_unlink,
|
|
|
|
.symlink = xfs_vn_symlink,
|
|
|
|
.mkdir = xfs_vn_mkdir,
|
|
|
|
.rmdir = xfs_vn_rmdir,
|
|
|
|
.mknod = xfs_vn_mknod,
|
|
|
|
.rename = xfs_vn_rename,
|
|
|
|
.permission = xfs_vn_permission,
|
|
|
|
.getattr = xfs_vn_getattr,
|
|
|
|
.setattr = xfs_vn_setattr,
|
|
|
|
.setxattr = xfs_vn_setxattr,
|
|
|
|
.getxattr = xfs_vn_getxattr,
|
|
|
|
.listxattr = xfs_vn_listxattr,
|
|
|
|
.removexattr = xfs_vn_removexattr,
|
2005-04-16 16:20:36 -06:00
|
|
|
};
|
|
|
|
|
2007-02-12 01:55:40 -07:00
|
|
|
const struct inode_operations xfs_symlink_inode_operations = {
|
2005-04-16 16:20:36 -06:00
|
|
|
.readlink = generic_readlink,
|
2006-03-13 20:00:51 -07:00
|
|
|
.follow_link = xfs_vn_follow_link,
|
|
|
|
.put_link = xfs_vn_put_link,
|
|
|
|
.permission = xfs_vn_permission,
|
|
|
|
.getattr = xfs_vn_getattr,
|
|
|
|
.setattr = xfs_vn_setattr,
|
|
|
|
.setxattr = xfs_vn_setxattr,
|
|
|
|
.getxattr = xfs_vn_getxattr,
|
|
|
|
.listxattr = xfs_vn_listxattr,
|
|
|
|
.removexattr = xfs_vn_removexattr,
|
2005-04-16 16:20:36 -06:00
|
|
|
};
|