a133d952b4
So we don't need xfs_dfrag.h in userspace anymore, move the extent swap ioctl structure definition to xfs_fs.h where most of the other ioctl structure definitions are. Now that we don't need separate files for extent swapping, separate the basic file descriptor checking code to xfs_ioctl.c, and the code that does the extent swap operation to xfs_bmap_util.c. This cleanly separates the user interface code from the physical mechanism used to do the extent swap. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
111 lines
4.1 KiB
C
111 lines
4.1 KiB
C
/*
|
|
* Copyright (c) 2000-2006 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_BMAP_UTIL_H__
|
|
#define __XFS_BMAP_UTIL_H__
|
|
|
|
/* Kernel only BMAP related definitions and functions */
|
|
|
|
struct xfs_bmbt_irec;
|
|
struct xfs_bmap_free_item;
|
|
struct xfs_ifork;
|
|
struct xfs_inode;
|
|
struct xfs_mount;
|
|
struct xfs_trans;
|
|
|
|
/*
|
|
* Argument structure for xfs_bmap_alloc.
|
|
*/
|
|
struct xfs_bmalloca {
|
|
xfs_fsblock_t *firstblock; /* i/o first block allocated */
|
|
struct xfs_bmap_free *flist; /* bmap freelist */
|
|
struct xfs_trans *tp; /* transaction pointer */
|
|
struct xfs_inode *ip; /* incore inode pointer */
|
|
struct xfs_bmbt_irec prev; /* extent before the new one */
|
|
struct xfs_bmbt_irec got; /* extent after, or delayed */
|
|
|
|
xfs_fileoff_t offset; /* offset in file filling in */
|
|
xfs_extlen_t length; /* i/o length asked/allocated */
|
|
xfs_fsblock_t blkno; /* starting block of new extent */
|
|
|
|
struct xfs_btree_cur *cur; /* btree cursor */
|
|
xfs_extnum_t idx; /* current extent index */
|
|
int nallocs;/* number of extents alloc'd */
|
|
int logflags;/* flags for transaction logging */
|
|
|
|
xfs_extlen_t total; /* total blocks needed for xaction */
|
|
xfs_extlen_t minlen; /* minimum allocation size (blocks) */
|
|
xfs_extlen_t minleft; /* amount must be left after alloc */
|
|
char eof; /* set if allocating past last extent */
|
|
char wasdel; /* replacing a delayed allocation */
|
|
char userdata;/* set if is user data */
|
|
char aeof; /* allocated space at eof */
|
|
char conv; /* overwriting unwritten extents */
|
|
char stack_switch;
|
|
int flags;
|
|
struct completion *done;
|
|
struct work_struct work;
|
|
int result;
|
|
};
|
|
|
|
int xfs_bmap_finish(struct xfs_trans **tp, struct xfs_bmap_free *flist,
|
|
int *committed);
|
|
int xfs_bmap_rtalloc(struct xfs_bmalloca *ap);
|
|
int xfs_bmapi_allocate(struct xfs_bmalloca *args);
|
|
int __xfs_bmapi_allocate(struct xfs_bmalloca *args);
|
|
int xfs_bmap_eof(struct xfs_inode *ip, xfs_fileoff_t endoff,
|
|
int whichfork, int *eof);
|
|
int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip,
|
|
int whichfork, int *count);
|
|
int xfs_bmap_punch_delalloc_range(struct xfs_inode *ip,
|
|
xfs_fileoff_t start_fsb, xfs_fileoff_t length);
|
|
|
|
/* bmap to userspace formatter - copy to user & advance pointer */
|
|
typedef int (*xfs_bmap_format_t)(void **, struct getbmapx *, int *);
|
|
int xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv,
|
|
xfs_bmap_format_t formatter, void *arg);
|
|
|
|
/* functions in xfs_bmap.c that are only needed by xfs_bmap_util.c */
|
|
void xfs_bmap_del_free(struct xfs_bmap_free *flist,
|
|
struct xfs_bmap_free_item *prev,
|
|
struct xfs_bmap_free_item *free);
|
|
int xfs_bmap_extsize_align(struct xfs_mount *mp, struct xfs_bmbt_irec *gotp,
|
|
struct xfs_bmbt_irec *prevp, xfs_extlen_t extsz,
|
|
int rt, int eof, int delay, int convert,
|
|
xfs_fileoff_t *offp, xfs_extlen_t *lenp);
|
|
void xfs_bmap_adjacent(struct xfs_bmalloca *ap);
|
|
int xfs_bmap_last_extent(struct xfs_trans *tp, struct xfs_inode *ip,
|
|
int whichfork, struct xfs_bmbt_irec *rec,
|
|
int *is_empty);
|
|
|
|
/* preallocation and hole punch interface */
|
|
int xfs_change_file_space(struct xfs_inode *ip, int cmd,
|
|
xfs_flock64_t *bf, xfs_off_t offset,
|
|
int attr_flags);
|
|
|
|
/* EOF block manipulation functions */
|
|
bool xfs_can_free_eofblocks(struct xfs_inode *ip, bool force);
|
|
int xfs_free_eofblocks(struct xfs_mount *mp, struct xfs_inode *ip,
|
|
bool need_iolock);
|
|
|
|
int xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip,
|
|
struct xfs_swapext *sx);
|
|
|
|
xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb);
|
|
|
|
#endif /* __XFS_BMAP_UTIL_H__ */
|