mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-27 03:10:12 +00:00
b238b8fa93
Currently pstore write interface employs record id as return value, but it is not enough because it can't tell caller if the write operation is successful. Pass the record id back via an argument pointer and return zero for success, non-zero for failure. Signed-off-by: Chen Gong <gong.chen@linux.intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
/*
|
|
* 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
|
|
|
|
/* types */
|
|
enum pstore_type_id {
|
|
PSTORE_TYPE_DMESG = 0,
|
|
PSTORE_TYPE_MCE = 1,
|
|
PSTORE_TYPE_UNKNOWN = 255
|
|
};
|
|
|
|
struct pstore_info {
|
|
struct module *owner;
|
|
char *name;
|
|
spinlock_t buf_lock; /* serialize access to 'buf' */
|
|
char *buf;
|
|
size_t bufsize;
|
|
int (*open)(struct pstore_info *psi);
|
|
int (*close)(struct pstore_info *psi);
|
|
ssize_t (*read)(u64 *id, enum pstore_type_id *type,
|
|
struct timespec *time, struct pstore_info *psi);
|
|
int (*write)(enum pstore_type_id type, u64 *id,
|
|
unsigned int part, size_t size, struct pstore_info *psi);
|
|
int (*erase)(enum pstore_type_id type, u64 id,
|
|
struct pstore_info *psi);
|
|
void *data;
|
|
};
|
|
|
|
#ifdef CONFIG_PSTORE
|
|
extern int pstore_register(struct pstore_info *);
|
|
extern int pstore_write(enum pstore_type_id type, char *buf, size_t size);
|
|
#else
|
|
static inline int
|
|
pstore_register(struct pstore_info *psi)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
static inline int
|
|
pstore_write(enum pstore_type_id type, char *buf, size_t size)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
#endif
|
|
|
|
#endif /*_LINUX_PSTORE_H*/
|