117 lines
3.5 KiB
C
117 lines
3.5 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_SYNC_H
|
|
#define XFS_SYNC_H 1
|
|
|
|
struct xfs_mount;
|
|
struct xfs_perag;
|
|
|
|
struct xfs_eofblocks {
|
|
__u32 eof_flags;
|
|
kuid_t eof_uid;
|
|
kgid_t eof_gid;
|
|
prid_t eof_prid;
|
|
__u64 eof_min_file_size;
|
|
xfs_ino_t eof_scan_owner;
|
|
};
|
|
|
|
#define SYNC_WAIT 0x0001 /* wait for i/o to complete */
|
|
#define SYNC_TRYLOCK 0x0002 /* only try to lock inodes */
|
|
|
|
/*
|
|
* tags for inode radix tree
|
|
*/
|
|
#define XFS_ICI_NO_TAG (-1) /* special flag for an untagged lookup
|
|
in xfs_inode_ag_iterator */
|
|
#define XFS_ICI_RECLAIM_TAG 0 /* inode is to be reclaimed */
|
|
#define XFS_ICI_EOFBLOCKS_TAG 1 /* inode has blocks beyond EOF */
|
|
|
|
/*
|
|
* Flags for xfs_iget()
|
|
*/
|
|
#define XFS_IGET_CREATE 0x1
|
|
#define XFS_IGET_UNTRUSTED 0x2
|
|
#define XFS_IGET_DONTCACHE 0x4
|
|
|
|
int xfs_iget(struct xfs_mount *mp, struct xfs_trans *tp, xfs_ino_t ino,
|
|
uint flags, uint lock_flags, xfs_inode_t **ipp);
|
|
|
|
/* recovery needs direct inode allocation capability */
|
|
struct xfs_inode * xfs_inode_alloc(struct xfs_mount *mp, xfs_ino_t ino);
|
|
void xfs_inode_free(struct xfs_inode *ip);
|
|
|
|
void xfs_reclaim_worker(struct work_struct *work);
|
|
|
|
int xfs_reclaim_inodes(struct xfs_mount *mp, int mode);
|
|
int xfs_reclaim_inodes_count(struct xfs_mount *mp);
|
|
long xfs_reclaim_inodes_nr(struct xfs_mount *mp, int nr_to_scan);
|
|
|
|
void xfs_inode_set_reclaim_tag(struct xfs_inode *ip);
|
|
|
|
void xfs_inode_set_eofblocks_tag(struct xfs_inode *ip);
|
|
void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip);
|
|
int xfs_icache_free_eofblocks(struct xfs_mount *, struct xfs_eofblocks *);
|
|
int xfs_inode_free_quota_eofblocks(struct xfs_inode *ip);
|
|
void xfs_eofblocks_worker(struct work_struct *);
|
|
void xfs_queue_eofblocks(struct xfs_mount *);
|
|
|
|
int xfs_inode_ag_iterator(struct xfs_mount *mp,
|
|
int (*execute)(struct xfs_inode *ip, int flags, void *args),
|
|
int flags, void *args);
|
|
int xfs_inode_ag_iterator_tag(struct xfs_mount *mp,
|
|
int (*execute)(struct xfs_inode *ip, int flags, void *args),
|
|
int flags, void *args, int tag);
|
|
|
|
static inline int
|
|
xfs_fs_eofblocks_from_user(
|
|
struct xfs_fs_eofblocks *src,
|
|
struct xfs_eofblocks *dst)
|
|
{
|
|
if (src->eof_version != XFS_EOFBLOCKS_VERSION)
|
|
return -EINVAL;
|
|
|
|
if (src->eof_flags & ~XFS_EOF_FLAGS_VALID)
|
|
return -EINVAL;
|
|
|
|
if (memchr_inv(&src->pad32, 0, sizeof(src->pad32)) ||
|
|
memchr_inv(src->pad64, 0, sizeof(src->pad64)))
|
|
return -EINVAL;
|
|
|
|
dst->eof_flags = src->eof_flags;
|
|
dst->eof_prid = src->eof_prid;
|
|
dst->eof_min_file_size = src->eof_min_file_size;
|
|
dst->eof_scan_owner = NULLFSINO;
|
|
|
|
dst->eof_uid = INVALID_UID;
|
|
if (src->eof_flags & XFS_EOF_FLAGS_UID) {
|
|
dst->eof_uid = make_kuid(current_user_ns(), src->eof_uid);
|
|
if (!uid_valid(dst->eof_uid))
|
|
return -EINVAL;
|
|
}
|
|
|
|
dst->eof_gid = INVALID_GID;
|
|
if (src->eof_flags & XFS_EOF_FLAGS_GID) {
|
|
dst->eof_gid = make_kgid(current_user_ns(), src->eof_gid);
|
|
if (!gid_valid(dst->eof_gid))
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#endif
|