Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * Persistent Storage - pstore.h
3 *
4 * Copyright (C) 2010 Intel Corporation <tony.luck@intel.com>
5 *
6 * This code is the generic layer to export data records from platform
7 * level persistent storage via a file system.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22#ifndef _LINUX_PSTORE_H
23#define _LINUX_PSTORE_H
24
25/* types */
26enum pstore_type_id {
27 PSTORE_TYPE_DMESG = 0,
28 PSTORE_TYPE_MCE = 1,
29 PSTORE_TYPE_UNKNOWN = 255
30};
31
32struct pstore_info {
33 struct module *owner;
34 char *name;
35 spinlock_t buf_lock; /* serialize access to 'buf' */
36 char *buf;
37 size_t bufsize;
38 struct mutex read_mutex; /* serialize open/read/close */
39 int (*open)(struct pstore_info *psi);
40 int (*close)(struct pstore_info *psi);
41 ssize_t (*read)(u64 *id, enum pstore_type_id *type,
42 struct timespec *time, char **buf,
43 struct pstore_info *psi);
44 int (*write)(enum pstore_type_id type, u64 *id,
45 unsigned int part, size_t size, struct pstore_info *psi);
46 int (*erase)(enum pstore_type_id type, u64 id,
47 struct pstore_info *psi);
48 void *data;
49};
50
51#ifdef CONFIG_PSTORE
52extern int pstore_register(struct pstore_info *);
53extern int pstore_write(enum pstore_type_id type, char *buf, size_t size);
54#else
55static inline int
56pstore_register(struct pstore_info *psi)
57{
58 return -ENODEV;
59}
60static inline int
61pstore_write(enum pstore_type_id type, char *buf, size_t size)
62{
63 return -ENODEV;
64}
65#endif
66
67#endif /*_LINUX_PSTORE_H*/