You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
87 lines
2.8 KiB
87 lines
2.8 KiB
/* |
|
* Persistent Storage - pstore.h |
|
* |
|
* Copyright (C) 2010 Intel Corporation <tony.luck@intel.com> |
|
* |
|
* This code is the generic layer to export data records from platform |
|
* level persistent storage via a file system. |
|
* |
|
* This program is free software; you can redistribute it and/or modify |
|
* it under the terms of the GNU General Public License version 2 as |
|
* published by the Free Software Foundation. |
|
* |
|
* This program is distributed in the hope that it will be useful, |
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
* GNU General Public License for more details. |
|
* |
|
* You should have received a copy of the GNU General Public License |
|
* along with this program; if not, write to the Free Software |
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
|
*/ |
|
#ifndef _LINUX_PSTORE_H |
|
#define _LINUX_PSTORE_H |
|
|
|
#include <linux/compiler.h> |
|
#include <linux/errno.h> |
|
#include <linux/kmsg_dump.h> |
|
#include <linux/mutex.h> |
|
#include <linux/spinlock.h> |
|
#include <linux/time.h> |
|
#include <linux/types.h> |
|
|
|
/* types */ |
|
enum pstore_type_id { |
|
PSTORE_TYPE_DMESG = 0, |
|
PSTORE_TYPE_MCE = 1, |
|
PSTORE_TYPE_CONSOLE = 2, |
|
PSTORE_TYPE_FTRACE = 3, |
|
/* PPC64 partition types */ |
|
PSTORE_TYPE_PPC_RTAS = 4, |
|
PSTORE_TYPE_PPC_OF = 5, |
|
PSTORE_TYPE_PPC_COMMON = 6, |
|
PSTORE_TYPE_PMSG = 7, |
|
PSTORE_TYPE_PPC_OPAL = 8, |
|
PSTORE_TYPE_UNKNOWN = 255 |
|
}; |
|
|
|
struct module; |
|
|
|
struct pstore_info { |
|
struct module *owner; |
|
char *name; |
|
spinlock_t buf_lock; /* serialize access to 'buf' */ |
|
char *buf; |
|
size_t bufsize; |
|
struct mutex read_mutex; /* serialize open/read/close */ |
|
int flags; |
|
int (*open)(struct pstore_info *psi); |
|
int (*close)(struct pstore_info *psi); |
|
ssize_t (*read)(u64 *id, enum pstore_type_id *type, |
|
int *count, struct timespec *time, char **buf, |
|
bool *compressed, struct pstore_info *psi); |
|
int (*write)(enum pstore_type_id type, |
|
enum kmsg_dump_reason reason, u64 *id, |
|
unsigned int part, int count, bool compressed, |
|
size_t size, struct pstore_info *psi); |
|
int (*write_buf)(enum pstore_type_id type, |
|
enum kmsg_dump_reason reason, u64 *id, |
|
unsigned int part, const char *buf, bool compressed, |
|
size_t size, struct pstore_info *psi); |
|
int (*write_buf_user)(enum pstore_type_id type, |
|
enum kmsg_dump_reason reason, u64 *id, |
|
unsigned int part, const char __user *buf, |
|
bool compressed, size_t size, struct pstore_info *psi); |
|
int (*erase)(enum pstore_type_id type, u64 id, |
|
int count, struct timespec time, |
|
struct pstore_info *psi); |
|
void *data; |
|
}; |
|
|
|
#define PSTORE_FLAGS_FRAGILE 1 |
|
|
|
extern int pstore_register(struct pstore_info *); |
|
extern void pstore_unregister(struct pstore_info *); |
|
extern bool pstore_cannot_block_path(enum kmsg_dump_reason reason); |
|
|
|
#endif /*_LINUX_PSTORE_H*/
|
|
|