From f0f23e5469dc80b482d985898a930be0e249a162 Mon Sep 17 00:00:00 2001 From: "Joel Fernandes (Google)" Date: Sat, 3 Nov 2018 16:38:16 -0700 Subject: pstore: Map PSTORE_TYPE_* to strings In later patches we will need to map types to names, so create a constant table for that which can also be used in different parts of old and new code. This saves the type in the PRZ which will be useful in later patches. Instead of having an explicit PSTORE_TYPE_UNKNOWN, just use ..._MAX. This includes removing the now redundant filename templates which can use a single format string. Also, there's no reason to limit the "is it still compressed?" test to only PSTORE_TYPE_DMESG when building the pstorefs filename. Records are zero-initialized, so a backend would need to have explicitly set compressed=1. Signed-off-by: Joel Fernandes (Google) Co-developed-by: Kees Cook Signed-off-by: Kees Cook --- include/linux/pstore.h | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) (limited to 'include/linux/pstore.h') diff --git a/include/linux/pstore.h b/include/linux/pstore.h index f46e5df76b58..a9ec285d85d1 100644 --- a/include/linux/pstore.h +++ b/include/linux/pstore.h @@ -32,21 +32,32 @@ struct module; -/* pstore record types (see fs/pstore/inode.c for filename templates) */ +/* + * pstore record types (see fs/pstore/platform.c for pstore_type_names[]) + * These values may be written to storage (see EFI vars backend), so + * they are kind of an ABI. Be careful changing the mappings. + */ enum pstore_type_id { + /* Frontend storage types */ PSTORE_TYPE_DMESG = 0, PSTORE_TYPE_MCE = 1, PSTORE_TYPE_CONSOLE = 2, PSTORE_TYPE_FTRACE = 3, - /* PPC64 partition types */ + + /* PPC64-specific 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 + + /* End of the list */ + PSTORE_TYPE_MAX }; +const char *pstore_type_to_name(enum pstore_type_id type); +enum pstore_type_id pstore_name_to_type(const char *name); + struct pstore_info; /** * struct pstore_record - details of a pstore record entry -- cgit