2 * linux/include/kmsg_dump.h
4 * Copyright (C) 2009 Net Insight AB
6 * Author: Simon Kagstrom <simon.kagstrom@netinsight.net>
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file COPYING in the main directory of this archive
12 #ifndef _LINUX_KMSG_DUMP_H
13 #define _LINUX_KMSG_DUMP_H
15 #include <linux/errno.h>
16 #include <linux/list.h>
19 * Keep this list arranged in rough order of priority. Anything listed after
20 * KMSG_DUMP_OOPS will not be logged by default unless printk.always_kmsg_dump
21 * is passed to the kernel.
23 enum kmsg_dump_reason
{
33 * struct kmsg_dump_iter - iterator for retrieving kernel messages
34 * @cur_seq: Points to the oldest message to dump
35 * @next_seq: Points after the newest message to dump
37 struct kmsg_dump_iter
{
43 * struct kmsg_dumper - kernel crash message dumper structure
44 * @list: Entry in the dumper list (private)
45 * @dump: Call into dumping code which will retrieve the data with
46 * through the record iterator
47 * @max_reason: filter for highest reason number that should be dumped
48 * @registered: Flag that specifies if this is already registered
51 struct list_head list
;
52 void (*dump
)(struct kmsg_dumper
*dumper
, enum kmsg_dump_reason reason
);
53 enum kmsg_dump_reason max_reason
;
58 void kmsg_dump(enum kmsg_dump_reason reason
);
60 bool kmsg_dump_get_line(struct kmsg_dump_iter
*iter
, bool syslog
,
61 char *line
, size_t size
, size_t *len
);
63 bool kmsg_dump_get_buffer(struct kmsg_dump_iter
*iter
, bool syslog
,
64 char *buf
, size_t size
, size_t *len_out
);
66 void kmsg_dump_rewind(struct kmsg_dump_iter
*iter
);
68 int kmsg_dump_register(struct kmsg_dumper
*dumper
);
70 int kmsg_dump_unregister(struct kmsg_dumper
*dumper
);
72 const char *kmsg_dump_reason_str(enum kmsg_dump_reason reason
);
74 static inline void kmsg_dump(enum kmsg_dump_reason reason
)
78 static inline bool kmsg_dump_get_line(struct kmsg_dump_iter
*iter
, bool syslog
,
79 const char *line
, size_t size
, size_t *len
)
84 static inline bool kmsg_dump_get_buffer(struct kmsg_dump_iter
*iter
, bool syslog
,
85 char *buf
, size_t size
, size_t *len
)
90 static inline void kmsg_dump_rewind(struct kmsg_dump_iter
*iter
)
94 static inline int kmsg_dump_register(struct kmsg_dumper
*dumper
)
99 static inline int kmsg_dump_unregister(struct kmsg_dumper
*dumper
)
104 static inline const char *kmsg_dump_reason_str(enum kmsg_dump_reason reason
)
110 #endif /* _LINUX_KMSG_DUMP_H */