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18#ifndef __XFS_LOG_H__
19#define __XFS_LOG_H__
20
21
22#define CYCLE_LSN(lsn) ((uint)((lsn)>>32))
23#define BLOCK_LSN(lsn) ((uint)(lsn))
24
25
26#define CYCLE_LSN_DISK(lsn) (((__be32 *)&(lsn))[0])
27
28#ifdef __KERNEL__
29
30
31
32
33static inline xfs_lsn_t _lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2)
34{
35 if (CYCLE_LSN(lsn1) != CYCLE_LSN(lsn2))
36 return (CYCLE_LSN(lsn1)<CYCLE_LSN(lsn2))? -999 : 999;
37
38 if (BLOCK_LSN(lsn1) != BLOCK_LSN(lsn2))
39 return (BLOCK_LSN(lsn1)<BLOCK_LSN(lsn2))? -999 : 999;
40
41 return 0;
42}
43
44#define XFS_LSN_CMP(x,y) _lsn_cmp(x,y)
45
46
47
48
49
50
51
52
53#define XFS_LOG_REL_PERM_RESERV 0x1
54
55
56
57
58
59
60#define XFS_LOG_SYNC 0x1
61
62#endif
63
64
65
66#define XFS_TRANSACTION 0x69
67#define XFS_VOLUME 0x2
68#define XFS_LOG 0xaa
69
70
71
72#define XLOG_REG_TYPE_BFORMAT 1
73#define XLOG_REG_TYPE_BCHUNK 2
74#define XLOG_REG_TYPE_EFI_FORMAT 3
75#define XLOG_REG_TYPE_EFD_FORMAT 4
76#define XLOG_REG_TYPE_IFORMAT 5
77#define XLOG_REG_TYPE_ICORE 6
78#define XLOG_REG_TYPE_IEXT 7
79#define XLOG_REG_TYPE_IBROOT 8
80#define XLOG_REG_TYPE_ILOCAL 9
81#define XLOG_REG_TYPE_IATTR_EXT 10
82#define XLOG_REG_TYPE_IATTR_BROOT 11
83#define XLOG_REG_TYPE_IATTR_LOCAL 12
84#define XLOG_REG_TYPE_QFORMAT 13
85#define XLOG_REG_TYPE_DQUOT 14
86#define XLOG_REG_TYPE_QUOTAOFF 15
87#define XLOG_REG_TYPE_LRHEADER 16
88#define XLOG_REG_TYPE_UNMOUNT 17
89#define XLOG_REG_TYPE_COMMIT 18
90#define XLOG_REG_TYPE_TRANSHDR 19
91#define XLOG_REG_TYPE_MAX 19
92
93typedef struct xfs_log_iovec {
94 void *i_addr;
95 int i_len;
96 uint i_type;
97} xfs_log_iovec_t;
98
99struct xfs_log_vec {
100 struct xfs_log_vec *lv_next;
101 int lv_niovecs;
102 struct xfs_log_iovec *lv_iovecp;
103 struct xfs_log_item *lv_item;
104 char *lv_buf;
105 int lv_buf_len;
106};
107
108
109
110
111
112typedef struct xfs_log_callback {
113 struct xfs_log_callback *cb_next;
114 void (*cb_func)(void *, int);
115 void *cb_arg;
116} xfs_log_callback_t;
117
118
119#ifdef __KERNEL__
120
121struct xfs_mount;
122struct xlog_in_core;
123struct xlog_ticket;
124struct xfs_log_item;
125struct xfs_item_ops;
126struct xfs_trans;
127
128void xfs_log_item_init(struct xfs_mount *mp,
129 struct xfs_log_item *item,
130 int type,
131 const struct xfs_item_ops *ops);
132
133xfs_lsn_t xfs_log_done(struct xfs_mount *mp,
134 struct xlog_ticket *ticket,
135 struct xlog_in_core **iclog,
136 uint flags);
137int _xfs_log_force(struct xfs_mount *mp,
138 uint flags,
139 int *log_forced);
140void xfs_log_force(struct xfs_mount *mp,
141 uint flags);
142int _xfs_log_force_lsn(struct xfs_mount *mp,
143 xfs_lsn_t lsn,
144 uint flags,
145 int *log_forced);
146void xfs_log_force_lsn(struct xfs_mount *mp,
147 xfs_lsn_t lsn,
148 uint flags);
149int xfs_log_mount(struct xfs_mount *mp,
150 struct xfs_buftarg *log_target,
151 xfs_daddr_t start_block,
152 int num_bblocks);
153int xfs_log_mount_finish(struct xfs_mount *mp);
154xfs_lsn_t xlog_assign_tail_lsn(struct xfs_mount *mp);
155xfs_lsn_t xlog_assign_tail_lsn_locked(struct xfs_mount *mp);
156void xfs_log_space_wake(struct xfs_mount *mp);
157int xfs_log_notify(struct xfs_mount *mp,
158 struct xlog_in_core *iclog,
159 xfs_log_callback_t *callback_entry);
160int xfs_log_release_iclog(struct xfs_mount *mp,
161 struct xlog_in_core *iclog);
162int xfs_log_reserve(struct xfs_mount *mp,
163 int length,
164 int count,
165 struct xlog_ticket **ticket,
166 __uint8_t clientid,
167 bool permanent,
168 uint t_type);
169int xfs_log_regrant(struct xfs_mount *mp, struct xlog_ticket *tic);
170int xfs_log_unmount_write(struct xfs_mount *mp);
171void xfs_log_unmount(struct xfs_mount *mp);
172int xfs_log_force_umount(struct xfs_mount *mp, int logerror);
173int xfs_log_need_covered(struct xfs_mount *mp);
174
175void xlog_iodone(struct xfs_buf *);
176
177struct xlog_ticket *xfs_log_ticket_get(struct xlog_ticket *ticket);
178void xfs_log_ticket_put(struct xlog_ticket *ticket);
179
180int xfs_log_commit_cil(struct xfs_mount *mp, struct xfs_trans *tp,
181 xfs_lsn_t *commit_lsn, int flags);
182bool xfs_log_item_in_current_chkpt(struct xfs_log_item *lip);
183
184#endif
185#endif
186