-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2014, 2015, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#ifndef _LUSTRE_FIEMAP_H
#define _LUSTRE_FIEMAP_H
-#ifndef HAVE_LINUX_FIEMAP_H
-
-struct ll_fiemap_extent {
- __u64 fe_logical; /* logical offset in bytes for the start of
- * the extent from the beginning of the file */
- __u64 fe_physical; /* physical offset in bytes for the start
- * of the extent from the beginning of the disk */
- __u64 fe_length; /* length in bytes for the extent */
- __u32 fe_flags; /* FIEMAP_EXTENT_* flags for the extent */
- __u32 fe_device; /* device number for this extent */
-};
-
-struct ll_user_fiemap {
- __u64 fm_start; /* logical offset (inclusive) at
- * which to start mapping (in) */
- __u64 fm_length; /* logical length of mapping which
- * userspace wants (in) */
- __u32 fm_flags; /* FIEMAP_FLAG_* flags for request (in/out) */
- __u32 fm_mapped_extents;/* number of extents that were mapped (out) */
- __u32 fm_extent_count; /* size of fm_extents array (in) */
- __u32 fm_reserved;
- struct ll_fiemap_extent fm_extents[0]; /* array of mapped extents (out).
- * Lustre uses first extent to
- * send end_offset */
-};
-
-#define FIEMAP_MAX_OFFSET (~0ULL)
-
-#define FIEMAP_FLAG_SYNC 0x00000001 /* sync file data before map */
-#define FIEMAP_FLAG_XATTR 0x00000002 /* map extended attribute tree */
-#define FIEMAP_FLAG_DEVICE_ORDER 0x40000000 /* return device ordered mapping */
-
-#define FIEMAP_FLAGS_COMPAT (FIEMAP_FLAG_SYNC | FIEMAP_FLAG_XATTR | \
- FIEMAP_FLAG_DEVICE_ORDER)
-
-#define FIEMAP_EXTENT_LAST 0x00000001 /* Last extent in file. */
-#define FIEMAP_EXTENT_UNKNOWN 0x00000002 /* Data location unknown. */
-#define FIEMAP_EXTENT_DELALLOC 0x00000004 /* Location still pending.
- * Sets EXTENT_UNKNOWN. */
-#define FIEMAP_EXTENT_NO_DIRECT 0x00000008 /* Data mapping undefined */
-#define FIEMAP_EXTENT_SECONDARY 0x00000010 /* Data copied offline. May
- * set EXTENT_NO_DIRECT. */
-#define FIEMAP_EXTENT_NET 0x00000020 /* Data stored remotely.
- * Sets EXTENT_NO_DIRECT. */
-#define FIEMAP_EXTENT_DATA_COMPRESSED 0x00000040 /* Data is compressed by fs.
- * Sets EXTENT_NO_DIRECT. */
-#define FIEMAP_EXTENT_DATA_ENCRYPTED 0x00000080 /* Data is encrypted by fs.
- * Sets EXTENT_NO_DIRECT. */
-#define FIEMAP_EXTENT_NOT_ALIGNED 0x00000100 /* Extent offsets may not be
- * block aligned. */
-#define FIEMAP_EXTENT_DATA_INLINE 0x00000200 /* Data mixed with metadata.
- * Sets EXTENT_NOT_ALIGNED.*/
-#define FIEMAP_EXTENT_DATA_TAIL 0x00000400 /* Multiple files in block.
- * Sets EXTENT_NOT_ALIGNED.*/
-#define FIEMAP_EXTENT_UNWRITTEN 0x00000800 /* Space allocated, but
- * no data (i.e. zero). */
-#define FIEMAP_EXTENT_MERGED 0x00001000 /* File does not natively
- * support extents. Result
- * merged for efficiency. */
-
-#else
-
-#define ll_fiemap_extent fiemap_extent
-#define ll_user_fiemap fiemap
+#ifndef __KERNEL__
+#include <stddef.h>
+#include <linux/fiemap.h>
+#endif
-#endif /* HAVE_LINUX_FIEMAP_H */
+/* XXX: We use fiemap_extent::fe_reserved[0] */
+#define fe_device fe_reserved[0]
static inline size_t fiemap_count_to_size(size_t extent_count)
{
- return (sizeof(struct ll_user_fiemap) + extent_count *
- sizeof(struct ll_fiemap_extent));
+ return sizeof(struct fiemap) + extent_count *
+ sizeof(struct fiemap_extent);
}
static inline unsigned fiemap_size_to_count(size_t array_size)
{
- return ((array_size - sizeof(struct ll_user_fiemap)) /
- sizeof(struct ll_fiemap_extent));
+ return (array_size - sizeof(struct fiemap)) /
+ sizeof(struct fiemap_extent);
}
+#define FIEMAP_FLAG_DEVICE_ORDER 0x40000000 /* return device ordered mapping */
+
+#ifdef FIEMAP_FLAGS_COMPAT
+#undef FIEMAP_FLAGS_COMPAT
+#endif
+
+/* Lustre specific flags - use a high bit, don't conflict with upstream flag */
+#define FIEMAP_EXTENT_NO_DIRECT 0x40000000 /* Data mapping undefined */
+#define FIEMAP_EXTENT_NET 0x80000000 /* Data stored remotely.
+ * Sets NO_DIRECT flag */
+
#endif /* _LUSTRE_FIEMAP_H */