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Diffstat (limited to 'include/linux/pstore.h')
-rw-r--r-- | include/linux/pstore.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/include/linux/pstore.h b/include/linux/pstore.h new file mode 100644 index 0000000000..a925e14397 --- /dev/null +++ b/include/linux/pstore.h @@ -0,0 +1,90 @@ +/* + * 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, see <http://www.gnu.org/licenses/>. + */ +#ifndef _LINUX_PSTORE_H +#define _LINUX_PSTORE_H + +#include <linux/time.h> +#include <linux/types.h> +#include <asm-generic/errno.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_UNKNOWN = 255 +}; + +enum kmsg_dump_reason { + KMSG_DUMP_UNDEF, +}; + +struct module; + +struct pstore_info { + struct module *owner; + char *name; + char *buf; + size_t bufsize; + 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, 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 (*erase)(enum pstore_type_id type, u64 id, + int count, struct pstore_info *psi); + void *data; +}; + +#define PSTORE_FLAGS_FRAGILE 1 + +#ifdef CONFIG_FS_PSTORE +extern int pstore_register(struct pstore_info *); +extern bool pstore_cannot_block_path(enum kmsg_dump_reason reason); +#else +static inline int +pstore_register(struct pstore_info *psi) +{ + return -ENODEV; +} +static inline bool +pstore_cannot_block_path(enum kmsg_dump_reason reason) +{ + return false; +} +#endif + +#endif /*_LINUX_PSTORE_H*/ |