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-rw-r--r--sys/gnu/fs/xfs/xfs_iomap.h90
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diff --git a/sys/gnu/fs/xfs/xfs_iomap.h b/sys/gnu/fs/xfs/xfs_iomap.h
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--- a/sys/gnu/fs/xfs/xfs_iomap.h
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-/*
- * Copyright (c) 2003-2005 Silicon Graphics, Inc.
- * All Rights Reserved.
- *
- * 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. See the
- * GNU General Public License for more details.
- *
- * 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
- */
-#ifndef __XFS_IOMAP_H__
-#define __XFS_IOMAP_H__
-
-#define IOMAP_DADDR_NULL ((xfs_daddr_t) (-1LL))
-
-
-typedef enum { /* iomap_flags values */
- IOMAP_EOF = 0x01, /* mapping contains EOF */
- IOMAP_HOLE = 0x02, /* mapping covers a hole */
- IOMAP_DELAY = 0x04, /* mapping covers delalloc region */
- IOMAP_REALTIME = 0x10, /* mapping on the realtime device */
- IOMAP_UNWRITTEN = 0x20, /* mapping covers allocated */
- /* but uninitialized file data */
- IOMAP_NEW = 0x40 /* just allocate */
-} iomap_flags_t;
-
-typedef enum {
- /* base extent manipulation calls */
- BMAPI_READ = (1 << 0), /* read extents */
- BMAPI_WRITE = (1 << 1), /* create extents */
- BMAPI_ALLOCATE = (1 << 2), /* delayed allocate to real extents */
- BMAPI_UNWRITTEN = (1 << 3), /* unwritten extents to real extents */
- /* modifiers */
- BMAPI_IGNSTATE = (1 << 4), /* ignore unwritten state on read */
- BMAPI_DIRECT = (1 << 5), /* direct instead of buffered write */
- BMAPI_MMAP = (1 << 6), /* allocate for mmap write */
- BMAPI_SYNC = (1 << 7), /* sync write to flush delalloc space */
- BMAPI_TRYLOCK = (1 << 8), /* non-blocking request */
- BMAPI_DEVICE = (1 << 9), /* we only want to know the device */
-} bmapi_flags_t;
-
-
-/*
- * xfs_iomap_t: File system I/O map
- *
- * The iomap_bn field is expressed in 512-byte blocks, and is where the
- * mapping starts on disk.
- *
- * The iomap_offset, iomap_bsize and iomap_delta fields are in bytes.
- * iomap_offset is the offset of the mapping in the file itself.
- * iomap_bsize is the size of the mapping, iomap_delta is the
- * desired data's offset into the mapping, given the offset supplied
- * to the file I/O map routine.
- *
- * When a request is made to read beyond the logical end of the object,
- * iomap_size may be set to 0, but iomap_offset and iomap_length should be set
- * to the actual amount of underlying storage that has been allocated, if any.
- */
-
-typedef struct xfs_iomap {
- xfs_daddr_t iomap_bn; /* first 512b blk of mapping */
- xfs_buftarg_t *iomap_target;
- xfs_off_t iomap_offset; /* offset of mapping, bytes */
- xfs_off_t iomap_bsize; /* size of mapping, bytes */
- xfs_off_t iomap_delta; /* offset into mapping, bytes */
- iomap_flags_t iomap_flags;
-} xfs_iomap_t;
-
-struct xfs_iocore;
-struct xfs_inode;
-struct xfs_bmbt_irec;
-
-extern int xfs_iomap(struct xfs_iocore *, xfs_off_t, ssize_t, int,
- struct xfs_iomap *, int *);
-extern int xfs_iomap_write_direct(struct xfs_inode *, xfs_off_t, size_t,
- int, struct xfs_bmbt_irec *, int *, int);
-extern int xfs_iomap_write_delay(struct xfs_inode *, xfs_off_t, size_t, int,
- struct xfs_bmbt_irec *, int *);
-extern int xfs_iomap_write_allocate(struct xfs_inode *, xfs_off_t, size_t,
- struct xfs_bmbt_irec *, int *);
-extern int xfs_iomap_write_unwritten(struct xfs_inode *, xfs_off_t, size_t);
-
-#endif /* __XFS_IOMAP_H__*/
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