mirror of https://gitee.com/openkylin/linux.git
331 lines
6.7 KiB
C
331 lines
6.7 KiB
C
/*
|
|
* Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of version 2 of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it would be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
*
|
|
* Further, this software is distributed without any warranty that it is
|
|
* free of the rightful claim of any third person regarding infringement
|
|
* or the like. Any license provided herein, whether implied or
|
|
* otherwise, applies only to this software file. Patent licenses, if
|
|
* any, provided herein do not apply to combinations of this program with
|
|
* other software, or any other product whatsoever.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write the Free Software Foundation, Inc., 59
|
|
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
|
|
*
|
|
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
|
|
* Mountain View, CA 94043, or:
|
|
*
|
|
* http://www.sgi.com
|
|
*
|
|
* For further information regarding this notice, see:
|
|
*
|
|
* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
|
|
*/
|
|
|
|
#include "xfs.h"
|
|
#include "xfs_fs.h"
|
|
#include "xfs_macros.h"
|
|
#include "xfs_inum.h"
|
|
#include "xfs_log.h"
|
|
#include "xfs_clnt.h"
|
|
#include "xfs_trans.h"
|
|
#include "xfs_sb.h"
|
|
#include "xfs_ag.h"
|
|
#include "xfs_dir.h"
|
|
#include "xfs_dir2.h"
|
|
#include "xfs_imap.h"
|
|
#include "xfs_alloc.h"
|
|
#include "xfs_dmapi.h"
|
|
#include "xfs_mount.h"
|
|
#include "xfs_quota.h"
|
|
|
|
int
|
|
vfs_mount(
|
|
struct bhv_desc *bdp,
|
|
struct xfs_mount_args *args,
|
|
struct cred *cr)
|
|
{
|
|
struct bhv_desc *next = bdp;
|
|
|
|
ASSERT(next);
|
|
while (! (bhvtovfsops(next))->vfs_mount)
|
|
next = BHV_NEXT(next);
|
|
return ((*bhvtovfsops(next)->vfs_mount)(next, args, cr));
|
|
}
|
|
|
|
int
|
|
vfs_parseargs(
|
|
struct bhv_desc *bdp,
|
|
char *s,
|
|
struct xfs_mount_args *args,
|
|
int f)
|
|
{
|
|
struct bhv_desc *next = bdp;
|
|
|
|
ASSERT(next);
|
|
while (! (bhvtovfsops(next))->vfs_parseargs)
|
|
next = BHV_NEXT(next);
|
|
return ((*bhvtovfsops(next)->vfs_parseargs)(next, s, args, f));
|
|
}
|
|
|
|
int
|
|
vfs_showargs(
|
|
struct bhv_desc *bdp,
|
|
struct seq_file *m)
|
|
{
|
|
struct bhv_desc *next = bdp;
|
|
|
|
ASSERT(next);
|
|
while (! (bhvtovfsops(next))->vfs_showargs)
|
|
next = BHV_NEXT(next);
|
|
return ((*bhvtovfsops(next)->vfs_showargs)(next, m));
|
|
}
|
|
|
|
int
|
|
vfs_unmount(
|
|
struct bhv_desc *bdp,
|
|
int fl,
|
|
struct cred *cr)
|
|
{
|
|
struct bhv_desc *next = bdp;
|
|
|
|
ASSERT(next);
|
|
while (! (bhvtovfsops(next))->vfs_unmount)
|
|
next = BHV_NEXT(next);
|
|
return ((*bhvtovfsops(next)->vfs_unmount)(next, fl, cr));
|
|
}
|
|
|
|
int
|
|
vfs_mntupdate(
|
|
struct bhv_desc *bdp,
|
|
int *fl,
|
|
struct xfs_mount_args *args)
|
|
{
|
|
struct bhv_desc *next = bdp;
|
|
|
|
ASSERT(next);
|
|
while (! (bhvtovfsops(next))->vfs_mntupdate)
|
|
next = BHV_NEXT(next);
|
|
return ((*bhvtovfsops(next)->vfs_mntupdate)(next, fl, args));
|
|
}
|
|
|
|
int
|
|
vfs_root(
|
|
struct bhv_desc *bdp,
|
|
struct vnode **vpp)
|
|
{
|
|
struct bhv_desc *next = bdp;
|
|
|
|
ASSERT(next);
|
|
while (! (bhvtovfsops(next))->vfs_root)
|
|
next = BHV_NEXT(next);
|
|
return ((*bhvtovfsops(next)->vfs_root)(next, vpp));
|
|
}
|
|
|
|
int
|
|
vfs_statvfs(
|
|
struct bhv_desc *bdp,
|
|
xfs_statfs_t *sp,
|
|
struct vnode *vp)
|
|
{
|
|
struct bhv_desc *next = bdp;
|
|
|
|
ASSERT(next);
|
|
while (! (bhvtovfsops(next))->vfs_statvfs)
|
|
next = BHV_NEXT(next);
|
|
return ((*bhvtovfsops(next)->vfs_statvfs)(next, sp, vp));
|
|
}
|
|
|
|
int
|
|
vfs_sync(
|
|
struct bhv_desc *bdp,
|
|
int fl,
|
|
struct cred *cr)
|
|
{
|
|
struct bhv_desc *next = bdp;
|
|
|
|
ASSERT(next);
|
|
while (! (bhvtovfsops(next))->vfs_sync)
|
|
next = BHV_NEXT(next);
|
|
return ((*bhvtovfsops(next)->vfs_sync)(next, fl, cr));
|
|
}
|
|
|
|
int
|
|
vfs_vget(
|
|
struct bhv_desc *bdp,
|
|
struct vnode **vpp,
|
|
struct fid *fidp)
|
|
{
|
|
struct bhv_desc *next = bdp;
|
|
|
|
ASSERT(next);
|
|
while (! (bhvtovfsops(next))->vfs_vget)
|
|
next = BHV_NEXT(next);
|
|
return ((*bhvtovfsops(next)->vfs_vget)(next, vpp, fidp));
|
|
}
|
|
|
|
int
|
|
vfs_dmapiops(
|
|
struct bhv_desc *bdp,
|
|
caddr_t addr)
|
|
{
|
|
struct bhv_desc *next = bdp;
|
|
|
|
ASSERT(next);
|
|
while (! (bhvtovfsops(next))->vfs_dmapiops)
|
|
next = BHV_NEXT(next);
|
|
return ((*bhvtovfsops(next)->vfs_dmapiops)(next, addr));
|
|
}
|
|
|
|
int
|
|
vfs_quotactl(
|
|
struct bhv_desc *bdp,
|
|
int cmd,
|
|
int id,
|
|
caddr_t addr)
|
|
{
|
|
struct bhv_desc *next = bdp;
|
|
|
|
ASSERT(next);
|
|
while (! (bhvtovfsops(next))->vfs_quotactl)
|
|
next = BHV_NEXT(next);
|
|
return ((*bhvtovfsops(next)->vfs_quotactl)(next, cmd, id, addr));
|
|
}
|
|
|
|
void
|
|
vfs_init_vnode(
|
|
struct bhv_desc *bdp,
|
|
struct vnode *vp,
|
|
struct bhv_desc *bp,
|
|
int unlock)
|
|
{
|
|
struct bhv_desc *next = bdp;
|
|
|
|
ASSERT(next);
|
|
while (! (bhvtovfsops(next))->vfs_init_vnode)
|
|
next = BHV_NEXT(next);
|
|
((*bhvtovfsops(next)->vfs_init_vnode)(next, vp, bp, unlock));
|
|
}
|
|
|
|
void
|
|
vfs_force_shutdown(
|
|
struct bhv_desc *bdp,
|
|
int fl,
|
|
char *file,
|
|
int line)
|
|
{
|
|
struct bhv_desc *next = bdp;
|
|
|
|
ASSERT(next);
|
|
while (! (bhvtovfsops(next))->vfs_force_shutdown)
|
|
next = BHV_NEXT(next);
|
|
((*bhvtovfsops(next)->vfs_force_shutdown)(next, fl, file, line));
|
|
}
|
|
|
|
void
|
|
vfs_freeze(
|
|
struct bhv_desc *bdp)
|
|
{
|
|
struct bhv_desc *next = bdp;
|
|
|
|
ASSERT(next);
|
|
while (! (bhvtovfsops(next))->vfs_freeze)
|
|
next = BHV_NEXT(next);
|
|
((*bhvtovfsops(next)->vfs_freeze)(next));
|
|
}
|
|
|
|
vfs_t *
|
|
vfs_allocate( void )
|
|
{
|
|
struct vfs *vfsp;
|
|
|
|
vfsp = kmem_zalloc(sizeof(vfs_t), KM_SLEEP);
|
|
bhv_head_init(VFS_BHVHEAD(vfsp), "vfs");
|
|
INIT_LIST_HEAD(&vfsp->vfs_sync_list);
|
|
spin_lock_init(&vfsp->vfs_sync_lock);
|
|
init_waitqueue_head(&vfsp->vfs_wait_sync_task);
|
|
init_waitqueue_head(&vfsp->vfs_wait_single_sync_task);
|
|
return vfsp;
|
|
}
|
|
|
|
void
|
|
vfs_deallocate(
|
|
struct vfs *vfsp)
|
|
{
|
|
bhv_head_destroy(VFS_BHVHEAD(vfsp));
|
|
kmem_free(vfsp, sizeof(vfs_t));
|
|
}
|
|
|
|
void
|
|
vfs_insertops(
|
|
struct vfs *vfsp,
|
|
struct bhv_vfsops *vfsops)
|
|
{
|
|
struct bhv_desc *bdp;
|
|
|
|
bdp = kmem_alloc(sizeof(struct bhv_desc), KM_SLEEP);
|
|
bhv_desc_init(bdp, NULL, vfsp, vfsops);
|
|
bhv_insert(&vfsp->vfs_bh, bdp);
|
|
}
|
|
|
|
void
|
|
vfs_insertbhv(
|
|
struct vfs *vfsp,
|
|
struct bhv_desc *bdp,
|
|
struct vfsops *vfsops,
|
|
void *mount)
|
|
{
|
|
bhv_desc_init(bdp, mount, vfsp, vfsops);
|
|
bhv_insert_initial(&vfsp->vfs_bh, bdp);
|
|
}
|
|
|
|
void
|
|
bhv_remove_vfsops(
|
|
struct vfs *vfsp,
|
|
int pos)
|
|
{
|
|
struct bhv_desc *bhv;
|
|
|
|
bhv = bhv_lookup_range(&vfsp->vfs_bh, pos, pos);
|
|
if (!bhv)
|
|
return;
|
|
bhv_remove(&vfsp->vfs_bh, bhv);
|
|
kmem_free(bhv, sizeof(*bhv));
|
|
}
|
|
|
|
void
|
|
bhv_remove_all_vfsops(
|
|
struct vfs *vfsp,
|
|
int freebase)
|
|
{
|
|
struct xfs_mount *mp;
|
|
|
|
bhv_remove_vfsops(vfsp, VFS_POSITION_QM);
|
|
bhv_remove_vfsops(vfsp, VFS_POSITION_DM);
|
|
if (!freebase)
|
|
return;
|
|
mp = XFS_BHVTOM(bhv_lookup(VFS_BHVHEAD(vfsp), &xfs_vfsops));
|
|
VFS_REMOVEBHV(vfsp, &mp->m_bhv);
|
|
xfs_mount_free(mp, 0);
|
|
}
|
|
|
|
void
|
|
bhv_insert_all_vfsops(
|
|
struct vfs *vfsp)
|
|
{
|
|
struct xfs_mount *mp;
|
|
|
|
mp = xfs_mount_init();
|
|
vfs_insertbhv(vfsp, &mp->m_bhv, &xfs_vfsops, mp);
|
|
vfs_insertdmapi(vfsp);
|
|
vfs_insertquota(vfsp);
|
|
}
|