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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
21struct xfs_mount;
22struct xfs_perag;
23
24struct 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};
31
32#define SYNC_WAIT 0x0001 /* wait for i/o to complete */
33#define SYNC_TRYLOCK 0x0002 /* only try to lock inodes */
34
35/*
36 * Flags for xfs_iget()
37 */
38#define XFS_IGET_CREATE 0x1
39#define XFS_IGET_UNTRUSTED 0x2
40#define XFS_IGET_DONTCACHE 0x4
41
42int xfs_iget(struct xfs_mount *mp, struct xfs_trans *tp, xfs_ino_t ino,
43 uint flags, uint lock_flags, xfs_inode_t **ipp);
44
45/* recovery needs direct inode allocation capability */
46struct xfs_inode * xfs_inode_alloc(struct xfs_mount *mp, xfs_ino_t ino);
47void xfs_inode_free(struct xfs_inode *ip);
48
49void xfs_reclaim_worker(struct work_struct *work);
50
51int xfs_reclaim_inodes(struct xfs_mount *mp, int mode);
52int xfs_reclaim_inodes_count(struct xfs_mount *mp);
53long xfs_reclaim_inodes_nr(struct xfs_mount *mp, int nr_to_scan);
54
55void xfs_inode_set_reclaim_tag(struct xfs_inode *ip);
56
57void xfs_inode_set_eofblocks_tag(struct xfs_inode *ip);
58void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip);
59int xfs_icache_free_eofblocks(struct xfs_mount *, struct xfs_eofblocks *);
60void xfs_eofblocks_worker(struct work_struct *);
61
62int xfs_inode_ag_iterator(struct xfs_mount *mp,
63 int (*execute)(struct xfs_inode *ip, struct xfs_perag *pag,
64 int flags, void *args),
65 int flags, void *args);
66int xfs_inode_ag_iterator_tag(struct xfs_mount *mp,
67 int (*execute)(struct xfs_inode *ip, struct xfs_perag *pag,
68 int flags, void *args),
69 int flags, void *args, int tag);
70
71static inline int
72xfs_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
90 dst->eof_uid = INVALID_UID;
91 if (src->eof_flags & XFS_EOF_FLAGS_UID) {
92 dst->eof_uid = make_kuid(current_user_ns(), src->eof_uid);
93 if (!uid_valid(dst->eof_uid))
94 return EINVAL;
95 }
96
97 dst->eof_gid = INVALID_GID;
98 if (src->eof_flags & XFS_EOF_FLAGS_GID) {
99 dst->eof_gid = make_kgid(current_user_ns(), src->eof_gid);
100 if (!gid_valid(dst->eof_gid))
101 return EINVAL;
102 }
103 return 0;
104}
105
106#endif
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
21struct xfs_mount;
22struct xfs_perag;
23
24struct 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};
31
32#define SYNC_WAIT 0x0001 /* wait for i/o to complete */
33#define SYNC_TRYLOCK 0x0002 /* only try to lock inodes */
34
35/*
36 * tags for inode radix tree
37 */
38#define XFS_ICI_NO_TAG (-1) /* special flag for an untagged lookup
39 in xfs_inode_ag_iterator */
40#define XFS_ICI_RECLAIM_TAG 0 /* inode is to be reclaimed */
41#define XFS_ICI_EOFBLOCKS_TAG 1 /* inode has blocks beyond EOF */
42#define XFS_ICI_COWBLOCKS_TAG 2 /* inode can have cow blocks to gc */
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#define XFS_IGET_INCORE 0x8 /* don't read from disk or reinit */
51
52/*
53 * flags for AG inode iterator
54 */
55#define XFS_AGITER_INEW_WAIT 0x1 /* wait on new inodes */
56
57int xfs_iget(struct xfs_mount *mp, struct xfs_trans *tp, xfs_ino_t ino,
58 uint flags, uint lock_flags, xfs_inode_t **ipp);
59
60/* recovery needs direct inode allocation capability */
61struct xfs_inode * xfs_inode_alloc(struct xfs_mount *mp, xfs_ino_t ino);
62void xfs_inode_free(struct xfs_inode *ip);
63
64void xfs_reclaim_worker(struct work_struct *work);
65
66int xfs_reclaim_inodes(struct xfs_mount *mp, int mode);
67int xfs_reclaim_inodes_count(struct xfs_mount *mp);
68long xfs_reclaim_inodes_nr(struct xfs_mount *mp, int nr_to_scan);
69
70void xfs_inode_set_reclaim_tag(struct xfs_inode *ip);
71
72void xfs_inode_set_eofblocks_tag(struct xfs_inode *ip);
73void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip);
74int xfs_icache_free_eofblocks(struct xfs_mount *, struct xfs_eofblocks *);
75int xfs_inode_free_quota_eofblocks(struct xfs_inode *ip);
76void xfs_eofblocks_worker(struct work_struct *);
77void xfs_queue_eofblocks(struct xfs_mount *);
78
79void xfs_inode_set_cowblocks_tag(struct xfs_inode *ip);
80void xfs_inode_clear_cowblocks_tag(struct xfs_inode *ip);
81int xfs_icache_free_cowblocks(struct xfs_mount *, struct xfs_eofblocks *);
82int xfs_inode_free_quota_cowblocks(struct xfs_inode *ip);
83void xfs_cowblocks_worker(struct work_struct *);
84void xfs_queue_cowblocks(struct xfs_mount *);
85
86int xfs_inode_ag_iterator(struct xfs_mount *mp,
87 int (*execute)(struct xfs_inode *ip, int flags, void *args),
88 int flags, void *args);
89int xfs_inode_ag_iterator_flags(struct xfs_mount *mp,
90 int (*execute)(struct xfs_inode *ip, int flags, void *args),
91 int flags, void *args, int iter_flags);
92int xfs_inode_ag_iterator_tag(struct xfs_mount *mp,
93 int (*execute)(struct xfs_inode *ip, int flags, void *args),
94 int flags, void *args, int tag);
95
96static inline int
97xfs_fs_eofblocks_from_user(
98 struct xfs_fs_eofblocks *src,
99 struct xfs_eofblocks *dst)
100{
101 if (src->eof_version != XFS_EOFBLOCKS_VERSION)
102 return -EINVAL;
103
104 if (src->eof_flags & ~XFS_EOF_FLAGS_VALID)
105 return -EINVAL;
106
107 if (memchr_inv(&src->pad32, 0, sizeof(src->pad32)) ||
108 memchr_inv(src->pad64, 0, sizeof(src->pad64)))
109 return -EINVAL;
110
111 dst->eof_flags = src->eof_flags;
112 dst->eof_prid = src->eof_prid;
113 dst->eof_min_file_size = src->eof_min_file_size;
114
115 dst->eof_uid = INVALID_UID;
116 if (src->eof_flags & XFS_EOF_FLAGS_UID) {
117 dst->eof_uid = make_kuid(current_user_ns(), src->eof_uid);
118 if (!uid_valid(dst->eof_uid))
119 return -EINVAL;
120 }
121
122 dst->eof_gid = INVALID_GID;
123 if (src->eof_flags & XFS_EOF_FLAGS_GID) {
124 dst->eof_gid = make_kgid(current_user_ns(), src->eof_gid);
125 if (!gid_valid(dst->eof_gid))
126 return -EINVAL;
127 }
128 return 0;
129}
130
131int xfs_icache_inode_is_allocated(struct xfs_mount *mp, struct xfs_trans *tp,
132 xfs_ino_t ino, bool *inuse);
133
134#endif