| 1 | /* |
| 2 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
| 3 | * All Rights Reserved. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope that it would be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write the Free Software Foundation, |
| 16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 17 | */ |
| 18 | #ifndef XFS_SYNC_H |
| 19 | #define XFS_SYNC_H 1 |
| 20 | |
| 21 | struct xfs_mount; |
| 22 | struct xfs_perag; |
| 23 | |
| 24 | struct xfs_eofblocks { |
| 25 | __u32 eof_flags; |
| 26 | kuid_t eof_uid; |
| 27 | kgid_t eof_gid; |
| 28 | prid_t eof_prid; |
| 29 | __u64 eof_min_file_size; |
| 30 | xfs_ino_t eof_scan_owner; |
| 31 | }; |
| 32 | |
| 33 | #define SYNC_WAIT 0x0001 /* wait for i/o to complete */ |
| 34 | #define SYNC_TRYLOCK 0x0002 /* only try to lock inodes */ |
| 35 | |
| 36 | /* |
| 37 | * tags for inode radix tree |
| 38 | */ |
| 39 | #define XFS_ICI_NO_TAG (-1) /* special flag for an untagged lookup |
| 40 | in xfs_inode_ag_iterator */ |
| 41 | #define XFS_ICI_RECLAIM_TAG 0 /* inode is to be reclaimed */ |
| 42 | #define XFS_ICI_EOFBLOCKS_TAG 1 /* inode has blocks beyond EOF */ |
| 43 | |
| 44 | /* |
| 45 | * Flags for xfs_iget() |
| 46 | */ |
| 47 | #define XFS_IGET_CREATE 0x1 |
| 48 | #define XFS_IGET_UNTRUSTED 0x2 |
| 49 | #define XFS_IGET_DONTCACHE 0x4 |
| 50 | |
| 51 | int xfs_iget(struct xfs_mount *mp, struct xfs_trans *tp, xfs_ino_t ino, |
| 52 | uint flags, uint lock_flags, xfs_inode_t **ipp); |
| 53 | |
| 54 | /* recovery needs direct inode allocation capability */ |
| 55 | struct xfs_inode * xfs_inode_alloc(struct xfs_mount *mp, xfs_ino_t ino); |
| 56 | void xfs_inode_free(struct xfs_inode *ip); |
| 57 | |
| 58 | void xfs_reclaim_worker(struct work_struct *work); |
| 59 | |
| 60 | int xfs_reclaim_inodes(struct xfs_mount *mp, int mode); |
| 61 | int xfs_reclaim_inodes_count(struct xfs_mount *mp); |
| 62 | long xfs_reclaim_inodes_nr(struct xfs_mount *mp, int nr_to_scan); |
| 63 | |
| 64 | void xfs_inode_set_reclaim_tag(struct xfs_inode *ip); |
| 65 | |
| 66 | void xfs_inode_set_eofblocks_tag(struct xfs_inode *ip); |
| 67 | void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip); |
| 68 | int xfs_icache_free_eofblocks(struct xfs_mount *, struct xfs_eofblocks *); |
| 69 | int xfs_inode_free_quota_eofblocks(struct xfs_inode *ip); |
| 70 | void xfs_eofblocks_worker(struct work_struct *); |
| 71 | |
| 72 | int xfs_inode_ag_iterator(struct xfs_mount *mp, |
| 73 | int (*execute)(struct xfs_inode *ip, int flags, void *args), |
| 74 | int flags, void *args); |
| 75 | int xfs_inode_ag_iterator_tag(struct xfs_mount *mp, |
| 76 | int (*execute)(struct xfs_inode *ip, int flags, void *args), |
| 77 | int flags, void *args, int tag); |
| 78 | |
| 79 | static inline int |
| 80 | xfs_fs_eofblocks_from_user( |
| 81 | struct xfs_fs_eofblocks *src, |
| 82 | struct xfs_eofblocks *dst) |
| 83 | { |
| 84 | if (src->eof_version != XFS_EOFBLOCKS_VERSION) |
| 85 | return -EINVAL; |
| 86 | |
| 87 | if (src->eof_flags & ~XFS_EOF_FLAGS_VALID) |
| 88 | return -EINVAL; |
| 89 | |
| 90 | if (memchr_inv(&src->pad32, 0, sizeof(src->pad32)) || |
| 91 | memchr_inv(src->pad64, 0, sizeof(src->pad64))) |
| 92 | return -EINVAL; |
| 93 | |
| 94 | dst->eof_flags = src->eof_flags; |
| 95 | dst->eof_prid = src->eof_prid; |
| 96 | dst->eof_min_file_size = src->eof_min_file_size; |
| 97 | dst->eof_scan_owner = NULLFSINO; |
| 98 | |
| 99 | dst->eof_uid = INVALID_UID; |
| 100 | if (src->eof_flags & XFS_EOF_FLAGS_UID) { |
| 101 | dst->eof_uid = make_kuid(current_user_ns(), src->eof_uid); |
| 102 | if (!uid_valid(dst->eof_uid)) |
| 103 | return -EINVAL; |
| 104 | } |
| 105 | |
| 106 | dst->eof_gid = INVALID_GID; |
| 107 | if (src->eof_flags & XFS_EOF_FLAGS_GID) { |
| 108 | dst->eof_gid = make_kgid(current_user_ns(), src->eof_gid); |
| 109 | if (!gid_valid(dst->eof_gid)) |
| 110 | return -EINVAL; |
| 111 | } |
| 112 | return 0; |
| 113 | } |
| 114 | |
| 115 | #endif |