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-rw-r--r--lib/ext2fs/fiemap.h93
1 files changed, 93 insertions, 0 deletions
diff --git a/lib/ext2fs/fiemap.h b/lib/ext2fs/fiemap.h
new file mode 100644
index 0000000..33ab8fb
--- /dev/null
+++ b/lib/ext2fs/fiemap.h
@@ -0,0 +1,93 @@
+/*
+ * FS_IOC_FIEMAP ioctl infrastructure.
+ *
+ * Some portions copyright (C) 2007 Cluster File Systems, Inc
+ *
+ * Authors: Mark Fasheh <mfasheh@suse.com>
+ * Kalpak Shah <kalpak.shah@sun.com>
+ * Andreas Dilger <adilger@sun.com>
+ */
+
+#ifndef _LINUX_FIEMAP_H
+#define _LINUX_FIEMAP_H
+
+struct 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 this extent */
+ __u64 fe_reserved64[2];
+ __u32 fe_flags; /* FIEMAP_EXTENT_* flags for this extent */
+ __u32 fe_reserved[3];
+};
+
+struct 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;
+#if __GNUC_PREREQ (4, 8)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wpedantic"
+#endif
+ struct fiemap_extent fm_extents[0]; /* array of mapped extents (out) */
+#if __GNUC_PREREQ (4, 8)
+#pragma GCC diagnostic pop
+#endif
+};
+
+#if defined(__linux__) && !defined(FS_IOC_FIEMAP)
+#define FS_IOC_FIEMAP _IOWR('f', 11, struct fiemap)
+#endif
+
+#if defined(__linux__) && !defined(FS_IOC_GETSTATE)
+#define EXT4_IOC_GETSTATE _IOW('f', 41, __u32)
+#endif
+
+#if defined(__linux__) && !defined(EXT4_IOC_GET_ES_CACHE)
+#define EXT4_IOC_GET_ES_CACHE _IOWR('f', 42, struct fiemap)
+#endif
+
+#if defined(__linux__) && !defined(EXT4_STATE_FLAG_EXT_PRECACHED)
+#define EXT4_STATE_FLAG_EXT_PRECACHED 0x00000001
+#endif
+
+#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_CACHE 0x00000004 /* request caching of the extents */
+
+#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. */
+
+#define EXT4_FIEMAP_EXTENT_HOLE 0x08000000 /* Entry in extent status
+ cache for a hole*/
+
+#endif /* _LINUX_FIEMAP_H */