/*
- * Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2005 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
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms 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.
+ * 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. See the
+ * GNU General Public License for more details.
*
- * 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/
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
-
#include "xfs.h"
-#include "xfs_inum.h"
+#include "xfs_bit.h"
#include "xfs_log.h"
+#include "xfs_inum.h"
#include "xfs_sb.h"
+#include "xfs_ag.h"
#include "xfs_dir.h"
#include "xfs_dir2.h"
#include "xfs_trans.h"
#include <linux/smp_lock.h>
static struct vm_operations_struct linvfs_file_vm_ops;
-
+#ifdef CONFIG_XFS_DMAPI
+static struct vm_operations_struct linvfs_dmapi_file_vm_ops;
+#endif
STATIC inline ssize_t
__linvfs_read(
#define nextdp(dp) ((struct xfs_dirent *)((char *)(dp) + (dp)->d_reclen))
+#ifdef CONFIG_XFS_DMAPI
+
+STATIC struct page *
+linvfs_filemap_nopage(
+ struct vm_area_struct *area,
+ unsigned long address,
+ int *type)
+{
+ struct inode *inode = area->vm_file->f_dentry->d_inode;
+ vnode_t *vp = LINVFS_GET_VP(inode);
+ xfs_mount_t *mp = XFS_VFSTOM(vp->v_vfsp);
+ int error;
+
+ ASSERT_ALWAYS(vp->v_vfsp->vfs_flag & VFS_DMI);
+
+ error = XFS_SEND_MMAP(mp, area, 0);
+ if (error)
+ return NULL;
+
+ return filemap_nopage(area, address, type);
+}
+
+#endif /* CONFIG_XFS_DMAPI */
+
+
STATIC int
linvfs_readdir(
struct file *filp,
vattr_t va = { .va_mask = XFS_AT_UPDATIME };
int error;
- if (vp->v_vfsp->vfs_flag & VFS_DMI) {
- xfs_mount_t *mp = XFS_VFSTOM(vp->v_vfsp);
+ vma->vm_ops = &linvfs_file_vm_ops;
- error = -XFS_SEND_MMAP(mp, vma, 0);
- if (error)
- return error;
+#ifdef CONFIG_XFS_DMAPI
+ if (vp->v_vfsp->vfs_flag & VFS_DMI) {
+ vma->vm_ops = &linvfs_dmapi_file_vm_ops;
}
-
- vma->vm_ops = &linvfs_file_vm_ops;
+#endif /* CONFIG_XFS_DMAPI */
VOP_SETATTR(vp, &va, XFS_AT_UPDATIME, NULL, error);
if (!error)
return error;
}
+#ifdef CONFIG_XFS_DMAPI
#ifdef HAVE_VMOP_MPROTECT
STATIC int
linvfs_mprotect(
return error;
}
#endif /* HAVE_VMOP_MPROTECT */
+#endif /* CONFIG_XFS_DMAPI */
+#ifdef HAVE_FOP_OPEN_EXEC
+/* If the user is attempting to execute a file that is offline then
+ * we have to trigger a DMAPI READ event before the file is marked as busy
+ * otherwise the invisible I/O will not be able to write to the file to bring
+ * it back online.
+ */
+STATIC int
+linvfs_open_exec(
+ struct inode *inode)
+{
+ vnode_t *vp = LINVFS_GET_VP(inode);
+ xfs_mount_t *mp = XFS_VFSTOM(vp->v_vfsp);
+ int error = 0;
+ xfs_inode_t *ip;
+
+ if (vp->v_vfsp->vfs_flag & VFS_DMI) {
+ ip = xfs_vtoi(vp);
+ if (!ip) {
+ error = -EINVAL;
+ goto open_exec_out;
+ }
+ if (DM_EVENT_ENABLED(vp->v_vfsp, ip, DM_EVENT_READ)) {
+ error = -XFS_SEND_DATA(mp, DM_EVENT_READ, vp,
+ 0, 0, 0, NULL);
+ }
+ }
+open_exec_out:
+ return error;
+}
+#endif /* HAVE_FOP_OPEN_EXEC */
struct file_operations linvfs_file_operations = {
.llseek = generic_file_llseek,
.sendfile = linvfs_sendfile,
.unlocked_ioctl = linvfs_ioctl,
#ifdef CONFIG_COMPAT
- .compat_ioctl = xfs_compat_ioctl,
+ .compat_ioctl = linvfs_compat_ioctl,
#endif
.mmap = linvfs_file_mmap,
.open = linvfs_open,
.release = linvfs_release,
.fsync = linvfs_fsync,
+#ifdef HAVE_FOP_OPEN_EXEC
+ .open_exec = linvfs_open_exec,
+#endif
};
struct file_operations linvfs_invis_file_operations = {
.sendfile = linvfs_sendfile,
.unlocked_ioctl = linvfs_ioctl_invis,
#ifdef CONFIG_COMPAT
- .compat_ioctl = xfs_compat_invis_ioctl,
+ .compat_ioctl = linvfs_compat_invis_ioctl,
#endif
.mmap = linvfs_file_mmap,
.open = linvfs_open,
.read = generic_read_dir,
.readdir = linvfs_readdir,
.unlocked_ioctl = linvfs_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = linvfs_compat_ioctl,
+#endif
.fsync = linvfs_fsync,
};
static struct vm_operations_struct linvfs_file_vm_ops = {
.nopage = filemap_nopage,
.populate = filemap_populate,
+};
+
+#ifdef CONFIG_XFS_DMAPI
+static struct vm_operations_struct linvfs_dmapi_file_vm_ops = {
+ .nopage = linvfs_filemap_nopage,
+ .populate = filemap_populate,
#ifdef HAVE_VMOP_MPROTECT
.mprotect = linvfs_mprotect,
#endif
};
+#endif /* CONFIG_XFS_DMAPI */
git://git.onelab.eu / linux-2.6.git / blobdiff