initial code repo

[stor4nfv.git] / src / ceph / src / include / linux_fiemap.h

diff --git a/src/ceph/src/include/linux_fiemap.h b/src/ceph/src/include/linux_fiemap.h
new file mode 100644 (file)
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--- /dev/null
+++ b/src/ceph/src/include/linux_fiemap.h
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+/*
+ * 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
+
+#if defined(__linux__)
+#include <linux/types.h>
+#elif defined(__FreeBSD_)
+#include <sys/types.h>
+#endif
+
+#include "include/int_types.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;
+       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 */