| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* |
| 3 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
| 4 | * All Rights Reserved. |
| 5 | */ |
| 6 | #ifndef XFS_SYNC_H |
| 7 | #define XFS_SYNC_H 1 |
| 8 | |
| 9 | struct xfs_mount; |
| 10 | struct xfs_perag; |
| 11 | |
| 12 | struct xfs_eofblocks { |
| 13 | __u32 eof_flags; |
| 14 | kuid_t eof_uid; |
| 15 | kgid_t eof_gid; |
| 16 | prid_t eof_prid; |
| 17 | __u64 eof_min_file_size; |
| 18 | }; |
| 19 | |
| 20 | #define SYNC_WAIT 0x0001 /* wait for i/o to complete */ |
| 21 | #define SYNC_TRYLOCK 0x0002 /* only try to lock inodes */ |
| 22 | |
| 23 | /* |
| 24 | * tags for inode radix tree |
| 25 | */ |
| 26 | #define XFS_ICI_NO_TAG (-1) /* special flag for an untagged lookup |
| 27 | in xfs_inode_ag_iterator */ |
| 28 | #define XFS_ICI_RECLAIM_TAG 0 /* inode is to be reclaimed */ |
| 29 | #define XFS_ICI_EOFBLOCKS_TAG 1 /* inode has blocks beyond EOF */ |
| 30 | #define XFS_ICI_COWBLOCKS_TAG 2 /* inode can have cow blocks to gc */ |
| 31 | |
| 32 | /* |
| 33 | * Flags for xfs_iget() |
| 34 | */ |
| 35 | #define XFS_IGET_CREATE 0x1 |
| 36 | #define XFS_IGET_UNTRUSTED 0x2 |
| 37 | #define XFS_IGET_DONTCACHE 0x4 |
| 38 | #define XFS_IGET_INCORE 0x8 /* don't read from disk or reinit */ |
| 39 | |
| 40 | /* |
| 41 | * flags for AG inode iterator |
| 42 | */ |
| 43 | #define XFS_AGITER_INEW_WAIT 0x1 /* wait on new inodes */ |
| 44 | |
| 45 | int xfs_iget(struct xfs_mount *mp, struct xfs_trans *tp, xfs_ino_t ino, |
| 46 | uint flags, uint lock_flags, xfs_inode_t **ipp); |
| 47 | |
| 48 | /* recovery needs direct inode allocation capability */ |
| 49 | struct xfs_inode * xfs_inode_alloc(struct xfs_mount *mp, xfs_ino_t ino); |
| 50 | void xfs_inode_free(struct xfs_inode *ip); |
| 51 | |
| 52 | void xfs_reclaim_worker(struct work_struct *work); |
| 53 | |
| 54 | int xfs_reclaim_inodes(struct xfs_mount *mp, int mode); |
| 55 | int xfs_reclaim_inodes_count(struct xfs_mount *mp); |
| 56 | long xfs_reclaim_inodes_nr(struct xfs_mount *mp, int nr_to_scan); |
| 57 | |
| 58 | void xfs_inode_set_reclaim_tag(struct xfs_inode *ip); |
| 59 | |
| 60 | void xfs_inode_set_eofblocks_tag(struct xfs_inode *ip); |
| 61 | void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip); |
| 62 | int xfs_icache_free_eofblocks(struct xfs_mount *, struct xfs_eofblocks *); |
| 63 | int xfs_inode_free_quota_eofblocks(struct xfs_inode *ip); |
| 64 | void xfs_eofblocks_worker(struct work_struct *); |
| 65 | void xfs_queue_eofblocks(struct xfs_mount *); |
| 66 | |
| 67 | void xfs_inode_set_cowblocks_tag(struct xfs_inode *ip); |
| 68 | void xfs_inode_clear_cowblocks_tag(struct xfs_inode *ip); |
| 69 | int xfs_icache_free_cowblocks(struct xfs_mount *, struct xfs_eofblocks *); |
| 70 | int xfs_inode_free_quota_cowblocks(struct xfs_inode *ip); |
| 71 | void xfs_cowblocks_worker(struct work_struct *); |
| 72 | void xfs_queue_cowblocks(struct xfs_mount *); |
| 73 | |
| 74 | int xfs_inode_ag_iterator(struct xfs_mount *mp, |
| 75 | int (*execute)(struct xfs_inode *ip, int flags, void *args), |
| 76 | int flags, void *args); |
| 77 | int xfs_inode_ag_iterator_flags(struct xfs_mount *mp, |
| 78 | int (*execute)(struct xfs_inode *ip, int flags, void *args), |
| 79 | int flags, void *args, int iter_flags); |
| 80 | int xfs_inode_ag_iterator_tag(struct xfs_mount *mp, |
| 81 | int (*execute)(struct xfs_inode *ip, int flags, void *args), |
| 82 | int flags, void *args, int tag); |
| 83 | |
| 84 | static inline int |
| 85 | xfs_fs_eofblocks_from_user( |
| 86 | struct xfs_fs_eofblocks *src, |
| 87 | struct xfs_eofblocks *dst) |
| 88 | { |
| 89 | if (src->eof_version != XFS_EOFBLOCKS_VERSION) |
| 90 | return -EINVAL; |
| 91 | |
| 92 | if (src->eof_flags & ~XFS_EOF_FLAGS_VALID) |
| 93 | return -EINVAL; |
| 94 | |
| 95 | if (memchr_inv(&src->pad32, 0, sizeof(src->pad32)) || |
| 96 | memchr_inv(src->pad64, 0, sizeof(src->pad64))) |
| 97 | return -EINVAL; |
| 98 | |
| 99 | dst->eof_flags = src->eof_flags; |
| 100 | dst->eof_prid = src->eof_prid; |
| 101 | dst->eof_min_file_size = src->eof_min_file_size; |
| 102 | |
| 103 | dst->eof_uid = INVALID_UID; |
| 104 | if (src->eof_flags & XFS_EOF_FLAGS_UID) { |
| 105 | dst->eof_uid = make_kuid(current_user_ns(), src->eof_uid); |
| 106 | if (!uid_valid(dst->eof_uid)) |
| 107 | return -EINVAL; |
| 108 | } |
| 109 | |
| 110 | dst->eof_gid = INVALID_GID; |
| 111 | if (src->eof_flags & XFS_EOF_FLAGS_GID) { |
| 112 | dst->eof_gid = make_kgid(current_user_ns(), src->eof_gid); |
| 113 | if (!gid_valid(dst->eof_gid)) |
| 114 | return -EINVAL; |
| 115 | } |
| 116 | return 0; |
| 117 | } |
| 118 | |
| 119 | int xfs_icache_inode_is_allocated(struct xfs_mount *mp, struct xfs_trans *tp, |
| 120 | xfs_ino_t ino, bool *inuse); |
| 121 | |
| 122 | void xfs_icache_disable_reclaim(struct xfs_mount *mp); |
| 123 | void xfs_icache_enable_reclaim(struct xfs_mount *mp); |
| 124 | |
| 125 | #endif |