[Ocfs2-devel] [PATCH 2/3] du-enhancement: Add fiemap header file v3

[Jie Liu]

Add fiemap.h to src which will be used by du.c

Signed-off-by: Jie Liu <jeff.liu at oracle.com>
---
 coreutils-6.9/src/fiemap.h |   68 ++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 68 insertions(+), 0 deletions(-)
 create mode 100644 coreutils-6.9/src/fiemap.h

diff --git a/coreutils-6.9/src/fiemap.h b/coreutils-6.9/src/fiemap.h
new file mode 100644
index 0000000..54222ba
--- /dev/null
+++ b/coreutils-6.9/src/fiemap.h
@@ -0,0 +1,68 @@
+/*
+ * FS_IOC_FIEMAP ioctl infrastructure.
+ *
+ * Some portions copyright (C) 2007 Cluster File Systems, Inc
+ *
+ * Authors: Mark Fasheh <mfasheh at suse.com>
+ *          Kalpak Shah <kalpak.shah at sun.com>
+ *          Andreas Dilger <adilger at sun.com>
+*/
+
+#ifndef _LINUX_FIEMAP_H
+#define _LINUX_FIEMAP_H
+
+#include <linux/types.h>
+
+struct fiemap_extent {
+  uint64_t fe_logical;  /* logical offset in bytes for the start of
+                        * the extent from the beginning of the file */
+  uint64_t fe_physical; /* physical offset in bytes for the start
+                         * of the extent from the beginning of the disk */
+  uint64_t fe_length;   /* length in bytes for this extent */
+  uint64_t fe_reserved64[2];
+  uint32_t fe_flags;    /* FIEMAP_EXTENT_* flags for this extent */
+  uint32_t fe_reserved[3];
+};
+
+struct fiemap {
+  uint64_t fm_start;                  /* logical offset (inclusive) at
+				       * which to start mapping (in) */
+  uint64_t fm_length;                 /* logical length of mapping which
+				       * userspace wants (in) */
+  uint32_t fm_flags;                  /* FIEMAP_FLAG_* flags for request (in/out) */
+  uint32_t fm_mapped_extents;         /* number of extents that were mapped (out) */
+  uint32_t fm_extent_count;           /* size of fm_extents array (in) */
+  uint32_t fm_reserved;
+  struct fiemap_extent fm_extents[0]; /* array of mapped extents (out) */
+};
+
+#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_FLAGS_COMPAT	(FIEMAP_FLAG_SYNC | FIEMAP_FLAG_XATTR)
+
+#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_ENCODED		0x00000008 /* Data can not be read
+						    * while fs is unmounted */
+#define FIEMAP_EXTENT_DATA_ENCRYPTED	0x00000080 /* Data is encrypted by fs.
+						    * Sets EXTENT_NO_BYPASS. */
+#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. */
+#define FIEMAP_EXTENT_SHARED		0x00002000 /* Space shared with other
+						    * files. */
+
+#endif /* _LINUX_FIEMAP_H */
-- 
1.5.4.3