331b6cc0ea
Improve support for writing to XFS partitions. Work done by: Russell Cattelan <cattelan at xfs dot org>
268 lines
6.3 KiB
C
268 lines
6.3 KiB
C
/*
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* Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 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, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* Further, this software is distributed without any warranty that it is
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* free of the rightful claim of any third person regarding infringement
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* or the like. Any license provided herein, whether implied or
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* otherwise, applies only to this software file. Patent licenses, if
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* any, provided herein do not apply to combinations of this program with
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* other software, or any other product whatsoever.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write the Free Software Foundation, Inc., 59
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* Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*
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* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
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* Mountain View, CA 94043, or:
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*
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* http://www.sgi.com
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*
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* For further information regarding this notice, see:
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*
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* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
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*/
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#include "xfs.h"
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#include "xfs_types.h"
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#include "xfs_bit.h"
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#include "xfs_inum.h"
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#include "xfs_log.h"
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#include "xfs_trans.h"
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#include "xfs_trans_priv.h"
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#include "xfs_sb.h"
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#include "xfs_ag.h"
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#include "xfs_dir.h"
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#include "xfs_dir2.h"
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#include "xfs_dmapi.h"
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#include "xfs_mount.h"
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#include "xfs_alloc_btree.h"
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#include "xfs_bmap_btree.h"
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#include "xfs_ialloc_btree.h"
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#include "xfs_btree.h"
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#include "xfs_imap.h"
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#include "xfs_alloc.h"
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#include "xfs_attr_sf.h"
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#include "xfs_dir_sf.h"
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#include "xfs_dir2_sf.h"
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#include "xfs_dinode.h"
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#include "xfs_ialloc.h"
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#include "xfs_inode.h"
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#include "xfs_inode_item.h"
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void
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vn_init(void)
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{
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}
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void
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vn_iowait(
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struct xfs_vnode *vp)
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{
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printf("vn_iowait doing nothing on FreeBSD?\n");
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}
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struct xfs_vnode *
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vn_initialize(
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xfs_vnode_t *vp)
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{
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XFS_STATS_INC(vn_active);
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XFS_STATS_INC(vn_alloc);
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/* Initialize the first behavior and the behavior chain head. */
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vn_bhv_head_init(VN_BHV_HEAD(vp), "vnode");
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#ifdef CONFIG_XFS_VNODE_TRACING
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vp->v_trace = ktrace_alloc(VNODE_TRACE_SIZE, KM_SLEEP);
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#endif /* CONFIG_XFS_VNODE_TRACING */
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vn_trace_exit(vp, "vn_initialize", (inst_t *)__return_address);
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return vp;
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}
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/*
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* Get a reference on a vnode. Need to drop vnode reference
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* to accomodate for vhold by VMAP regardless of whether or
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* not we were able to successfully grab the vnode.
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*/
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xfs_vnode_t *
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vn_get(
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struct xfs_vnode *xfs_vp,
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vmap_t *vmap)
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{
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struct vnode *vp;
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int error;
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XFS_STATS_INC(vn_get);
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vp = vmap->v_vp;
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error = vget(vp, 0, curthread);
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if (error) {
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vdrop(vp);
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return (NULL);
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}
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vdrop(vp);
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if (vp->v_data != xfs_vp) {
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vput(vp);
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return (NULL);
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}
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vn_trace_exit(vp, "vn_get", (inst_t *)__return_address);
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return xfs_vp;
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}
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/*
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* purge a vnode from the cache
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* At this point the vnode is guaranteed to have no references (vn_count == 0)
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* The caller has to make sure that there are no ways someone could
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* get a handle (via vn_get) on the vnode (usually done via a mount/vfs lock).
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*/
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void
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vn_purge(struct xfs_vnode *xfs_vp)
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{
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struct vnode *vp;
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vn_trace_entry(vp, "vn_purge", (inst_t *)__return_address);
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vp = xfs_vp->v_vnode;
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vn_lock(vp, LK_EXCLUSIVE, curthread);
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if (vp->v_holdcnt == 0)
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vhold(vp);
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vgone(vp);
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VOP_UNLOCK(vp, 0, curthread);
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}
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void xfs_ichgtime(
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xfs_inode_t *ip,
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int flags)
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{
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timespec_t tv;
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vfs_timestamp(&tv);
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if (flags & XFS_ICHGTIME_MOD) {
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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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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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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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//printf ("xfs_ichgtime NI\n");
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}
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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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/*
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* It's unclear if we need this since this is for syncing the linux inode's atime
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* to the xfs inode's atime.
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* Since FreeBSD doesn't have atime in the vnode is there anything to really
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* sync over?
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* For now just make this a update atime call
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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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#if 0
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xfs_vnode_t *vp;
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#endif
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timespec_t tv;
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/* vfs_timestamp looks at the system time accuracy variable */
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vfs_timestamp(&tv);
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#if 0
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printf("xfs_synchronize_atime old (%d,%d) new (%d,%ld)\n",
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ip->i_d.di_atime.t_sec,
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ip->i_d.di_atime.t_nsec,
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tv.tv_sec,
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tv.tv_nsec);
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#endif
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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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#ifdef RMC
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/*
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* Extracting atime values in various formats
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*/
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void vn_atime_to_bstime(struct xfs_vnode *vp, xfs_bstime_t *bs_atime)
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{
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bs_atime->tv_sec = vp->v_inode.i_atime.tv_sec;
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bs_atime->tv_nsec = vp->v_inode.i_atime.tv_nsec;
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printf("vn_atime_to_bstime NI\n");
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}
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#endif
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#ifdef CONFIG_XFS_VNODE_TRACING
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#define KTRACE_ENTER(vp, vk, s, line, ra) \
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ktrace_enter( (vp)->v_trace, \
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/* 0 */ (void *)(__psint_t)(vk), \
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/* 1 */ (void *)(s), \
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/* 2 */ (void *)(__psint_t) line, \
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/* 3 */ (void *)(vn_count(vp)), \
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/* 4 */ (void *)(ra), \
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/* 5 */ (void *)(__psunsigned_t)(vp)->v_flag, \
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/* 6 */ (void *)(__psint_t)smp_processor_id(), \
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/* 7 */ (void *)(__psint_t)(current->pid), \
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/* 8 */ (void *)__return_address, \
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/* 9 */ 0, 0, 0, 0, 0, 0, 0)
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/*
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* Vnode tracing code.
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*/
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void
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vn_trace_entry(xfs_vnode_t *vp, char *func, inst_t *ra)
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{
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KTRACE_ENTER(vp, VNODE_KTRACE_ENTRY, func, 0, ra);
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}
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void
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vn_trace_exit(xfs_vnode_t *vp, char *func, inst_t *ra)
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{
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KTRACE_ENTER(vp, VNODE_KTRACE_EXIT, func, 0, ra);
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}
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void
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vn_trace_hold(xfs_vnode_t *vp, char *file, int line, inst_t *ra)
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{
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KTRACE_ENTER(vp, VNODE_KTRACE_HOLD, file, line, ra);
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}
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void
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vn_trace_ref(xfs_vnode_t *vp, char *file, int line, inst_t *ra)
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{
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KTRACE_ENTER(vp, VNODE_KTRACE_REF, file, line, ra);
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}
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void
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vn_trace_rele(xfs_vnode_t *vp, char *file, int line, inst_t *ra)
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{
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KTRACE_ENTER(vp, VNODE_KTRACE_RELE, file, line, ra);
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}
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#endif /* CONFIG_XFS_VNODE_TRACING */
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