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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127/* * linux/include/kmsg_dump.h * * Copyright (C) 2009 Net Insight AB * * Author: Simon Kagstrom <simon.kagstrom@netinsight.net> * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive * for more details. */#ifndef _LINUX_KMSG_DUMP_H#define _LINUX_KMSG_DUMP_H
#include <linux/errno.h>#include <linux/list.h>
/* * Keep this list arranged in rough order of priority. Anything listed after * KMSG_DUMP_OOPS will not be logged by default unless printk.always_kmsg_dump * is passed to the kernel. */enum kmsg_dump_reason { KMSG_DUMP_UNDEF, KMSG_DUMP_PANIC, KMSG_DUMP_OOPS, KMSG_DUMP_EMERG, KMSG_DUMP_SHUTDOWN, KMSG_DUMP_MAX};
/** * struct kmsg_dump_iter - iterator for retrieving kernel messages * @cur_seq: Points to the oldest message to dump * @next_seq: Points after the newest message to dump */struct kmsg_dump_iter { u64 cur_seq; u64 next_seq;};
/** * struct kmsg_dump_detail - kernel crash detail * @reason: reason for the crash, see kmsg_dump_reason. * @description: optional short string, to provide additional information. */
struct kmsg_dump_detail { enum kmsg_dump_reason reason; const char *description;};
/** * struct kmsg_dumper - kernel crash message dumper structure * @list: Entry in the dumper list (private) * @dump: Call into dumping code which will retrieve the data with * through the record iterator * @max_reason: filter for highest reason number that should be dumped * @registered: Flag that specifies if this is already registered */struct kmsg_dumper { struct list_head list; void (*dump)(struct kmsg_dumper *dumper, struct kmsg_dump_detail *detail); enum kmsg_dump_reason max_reason; bool registered;};
#ifdef CONFIG_PRINTKvoid kmsg_dump_desc(enum kmsg_dump_reason reason, const char *desc);
bool kmsg_dump_get_line(struct kmsg_dump_iter *iter, bool syslog, char *line, size_t size, size_t *len);
bool kmsg_dump_get_buffer(struct kmsg_dump_iter *iter, bool syslog, char *buf, size_t size, size_t *len_out);
void kmsg_dump_rewind(struct kmsg_dump_iter *iter);
int kmsg_dump_register(struct kmsg_dumper *dumper);
int kmsg_dump_unregister(struct kmsg_dumper *dumper);
const char *kmsg_dump_reason_str(enum kmsg_dump_reason reason);#elsestatic inline void kmsg_dump_desc(enum kmsg_dump_reason reason, const char *desc){}
static inline bool kmsg_dump_get_line(struct kmsg_dump_iter *iter, bool syslog, const char *line, size_t size, size_t *len){ return false;}
static inline bool kmsg_dump_get_buffer(struct kmsg_dump_iter *iter, bool syslog, char *buf, size_t size, size_t *len){ return false;}
static inline void kmsg_dump_rewind(struct kmsg_dump_iter *iter){}
static inline int kmsg_dump_register(struct kmsg_dumper *dumper){ return -EINVAL;}
static inline int kmsg_dump_unregister(struct kmsg_dumper *dumper){ return -EINVAL;}
static inline const char *kmsg_dump_reason_str(enum kmsg_dump_reason reason){ return "Disabled";}#endif
static inline void kmsg_dump(enum kmsg_dump_reason reason){ kmsg_dump_desc(reason, NULL);}
#endif /* _LINUX_KMSG_DUMP_H */