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 * Flags for xfs_iget()
38 */
39 #define XFS_IGET_CREATE 0x1
40 #define XFS_IGET_UNTRUSTED 0x2
41 #define XFS_IGET_DONTCACHE 0x4
42
43 int xfs_iget(struct xfs_mount *mp, struct xfs_trans *tp, xfs_ino_t ino,
44 uint flags, uint lock_flags, xfs_inode_t **ipp);
45
46 /* recovery needs direct inode allocation capability */
47 struct xfs_inode * xfs_inode_alloc(struct xfs_mount *mp, xfs_ino_t ino);
48 void xfs_inode_free(struct xfs_inode *ip);
49
50 void xfs_reclaim_worker(struct work_struct *work);
51
52 int xfs_reclaim_inodes(struct xfs_mount *mp, int mode);
53 int xfs_reclaim_inodes_count(struct xfs_mount *mp);
54 long xfs_reclaim_inodes_nr(struct xfs_mount *mp, int nr_to_scan);
55
56 void xfs_inode_set_reclaim_tag(struct xfs_inode *ip);
57
58 void xfs_inode_set_eofblocks_tag(struct xfs_inode *ip);
59 void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip);
60 int xfs_icache_free_eofblocks(struct xfs_mount *, struct xfs_eofblocks *);
61 int xfs_inode_free_quota_eofblocks(struct xfs_inode *ip);
62 void xfs_eofblocks_worker(struct work_struct *);
63
64 int xfs_inode_ag_iterator(struct xfs_mount *mp,
65 int (*execute)(struct xfs_inode *ip, int flags, void *args),
66 int flags, void *args);
67 int xfs_inode_ag_iterator_tag(struct xfs_mount *mp,
68 int (*execute)(struct xfs_inode *ip, int flags, void *args),
69 int flags, void *args, int tag);
70
71 static inline int
xfs_fs_eofblocks_from_user(struct xfs_fs_eofblocks * src,struct xfs_eofblocks * dst)72 xfs_fs_eofblocks_from_user(
73 struct xfs_fs_eofblocks *src,
74 struct xfs_eofblocks *dst)
75 {
76 if (src->eof_version != XFS_EOFBLOCKS_VERSION)
77 return -EINVAL;
78
79 if (src->eof_flags & ~XFS_EOF_FLAGS_VALID)
80 return -EINVAL;
81
82 if (memchr_inv(&src->pad32, 0, sizeof(src->pad32)) ||
83 memchr_inv(src->pad64, 0, sizeof(src->pad64)))
84 return -EINVAL;
85
86 dst->eof_flags = src->eof_flags;
87 dst->eof_prid = src->eof_prid;
88 dst->eof_min_file_size = src->eof_min_file_size;
89 dst->eof_scan_owner = NULLFSINO;
90
91 dst->eof_uid = INVALID_UID;
92 if (src->eof_flags & XFS_EOF_FLAGS_UID) {
93 dst->eof_uid = make_kuid(current_user_ns(), src->eof_uid);
94 if (!uid_valid(dst->eof_uid))
95 return -EINVAL;
96 }
97
98 dst->eof_gid = INVALID_GID;
99 if (src->eof_flags & XFS_EOF_FLAGS_GID) {
100 dst->eof_gid = make_kgid(current_user_ns(), src->eof_gid);
101 if (!gid_valid(dst->eof_gid))
102 return -EINVAL;
103 }
104 return 0;
105 }
106
107 #endif
108