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Diffstat (limited to 'sys/gnu/fs/xfs/xfs_iomap.h')
-rw-r--r-- | sys/gnu/fs/xfs/xfs_iomap.h | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/sys/gnu/fs/xfs/xfs_iomap.h b/sys/gnu/fs/xfs/xfs_iomap.h deleted file mode 100644 index 3ce204a..0000000 --- a/sys/gnu/fs/xfs/xfs_iomap.h +++ /dev/null @@ -1,90 +0,0 @@ -/* - * 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__*/ |