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 {
32 * struct kmsg_dumper - kernel crash message dumper structure
33 * @list: Entry in the dumper list (private)
34 * @dump: Call into dumping code which will retrieve the data with
35 * through the record iterator
36 * @max_reason: filter for highest reason number that should be dumped
37 * @registered: Flag that specifies if this is already registered
40 struct list_head list;
41 void (*dump)(struct kmsg_dumper *dumper, enum kmsg_dump_reason reason);
42 enum kmsg_dump_reason max_reason;
46 /* private state of the kmsg iterator */
54 void kmsg_dump(enum kmsg_dump_reason reason);
56 bool kmsg_dump_get_line_nolock(struct kmsg_dumper *dumper, bool syslog,
57 char *line, size_t size, size_t *len);
59 bool kmsg_dump_get_line(struct kmsg_dumper *dumper, bool syslog,
60 char *line, size_t size, size_t *len);
62 bool kmsg_dump_get_buffer(struct kmsg_dumper *dumper, bool syslog,
63 char *buf, size_t size, size_t *len);
65 void kmsg_dump_rewind_nolock(struct kmsg_dumper *dumper);
67 void kmsg_dump_rewind(struct kmsg_dumper *dumper);
69 int kmsg_dump_register(struct kmsg_dumper *dumper);
71 int kmsg_dump_unregister(struct kmsg_dumper *dumper);
73 static inline void kmsg_dump(enum kmsg_dump_reason reason)
77 static inline bool kmsg_dump_get_line_nolock(struct kmsg_dumper *dumper,
78 bool syslog, const char *line,
79 size_t size, size_t *len)
84 static inline bool kmsg_dump_get_line(struct kmsg_dumper *dumper, bool syslog,
85 const char *line, size_t size, size_t *len)
90 static inline bool kmsg_dump_get_buffer(struct kmsg_dumper *dumper, bool syslog,
91 char *buf, size_t size, size_t *len)
96 static inline void kmsg_dump_rewind_nolock(struct kmsg_dumper *dumper)
100 static inline void kmsg_dump_rewind(struct kmsg_dumper *dumper)
104 static inline int kmsg_dump_register(struct kmsg_dumper *dumper)
109 static inline int kmsg_dump_unregister(struct kmsg_dumper *dumper)
115 #endif /* _LINUX_KMSG_DUMP_H */