patch-2.4.27 linux-2.4.27/fs/xfs/linux-2.4/xfs_vfs.c

• Lines: 329
• Date: 2004-08-07 16:26:06.096406029 -0700
• Orig file: linux-2.4.26/fs/xfs/linux-2.4/xfs_vfs.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.26/fs/xfs/linux-2.4/xfs_vfs.c linux-2.4.27/fs/xfs/linux-2.4/xfs_vfs.c
@@ -0,0 +1,328 @@
+/*
+ * Copyright (c) 2000-2003 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));
+}
+
+struct inode *
+vfs_get_inode(
+	struct bhv_desc		*bdp,
+	xfs_ino_t		ino,
+	int			fl)
+{
+	struct bhv_desc		*next = bdp;
+
+	while (! (bhvtovfsops(next))->vfs_get_inode)
+		next = BHV_NEXTNULL(next);
+	return ((*bhvtovfsops(next)->vfs_get_inode)(next, ino, fl));
+}
+
+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));
+}
+
+vfs_t *
+vfs_allocate( void )
+{
+	struct vfs		*vfsp;
+
+	vfsp = kmem_zalloc(sizeof(vfs_t), KM_SLEEP);
+	bhv_head_init(VFS_BHVHEAD(vfsp), "vfs");
+	init_waitqueue_head(&vfsp->vfs_wait_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);
+}