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pstore: Introduce new argument 'compressed' in the read callback

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Backends will set the flag 'compressed' after reading the log from
persistent store to indicate the data being returned to pstore is
compressed or not.

Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Aruna Balakrishnaiah 2013-08-16 13:53:19 -07:00 committed by Tony Luck
parent b0aad7a99c
commit 9a4e139820
6 changed files with 11 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/powerpc/platforms/pseries/nvram.c
View File

@ -598,7 +598,7 @@ static int nvram_pstore_write(enum pstore_type_id type,
*/
static ssize_t nvram_pstore_read(u64 *id, enum pstore_type_id *type,
int *count, struct timespec *time, char **buf,
struct pstore_info *psi)
bool *compressed, struct pstore_info *psi)
{
struct oops_log_info *oops_hdr;
unsigned int err_type, id_no, size = 0;

4
drivers/acpi/apei/erst.c
View File

@ -935,7 +935,7 @@ static int erst_open_pstore(struct pstore_info *psi);
static int erst_close_pstore(struct pstore_info *psi);
static ssize_t erst_reader(u64 *id, enum pstore_type_id *type, int *count,
struct timespec *time, char **buf,
struct pstore_info *psi);
bool *compressed, struct pstore_info *psi);
static int erst_writer(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);
@ -991,7 +991,7 @@ static int erst_close_pstore(struct pstore_info *psi)
static ssize_t erst_reader(u64 *id, enum pstore_type_id *type, int *count,
struct timespec *time, char **buf,
struct pstore_info *psi)
bool *compressed, struct pstore_info *psi)
{
int rc;
ssize_t len = 0;

3
drivers/firmware/efi/efi-pstore.c
View File

@ -87,7 +87,8 @@ static int efi_pstore_read_func(struct efivar_entry *entry, void *data)
static ssize_t efi_pstore_read(u64 *id, enum pstore_type_id *type,
int *count, struct timespec *timespec,
char **buf, struct pstore_info *psi)
char **buf, bool *compressed,
struct pstore_info *psi)
{
struct pstore_read_data data;

4
fs/pstore/platform.c
View File

@ -428,6 +428,7 @@ void pstore_get_records(int quiet)
enum pstore_type_id type;
struct timespec time;
int failed = 0, rc;
bool compressed;
if (!psi)
return;
@ -436,7 +437,8 @@ void pstore_get_records(int quiet)
if (psi->open && psi->open(psi))
goto out;
while ((size = psi->read(&id, &type, &count, &time, &buf, psi)) > 0) {
while ((size = psi->read(&id, &type, &count, &time, &buf, &compressed,
psi)) > 0) {
rc = pstore_mkfile(type, psi->name, id, count, buf,
(size_t)size, time, psi);
kfree(buf);

3
fs/pstore/ram.c
View File

@ -133,7 +133,8 @@ ramoops_get_next_prz(struct persistent_ram_zone *przs[], uint *c, uint max,
static ssize_t ramoops_pstore_read(u64 *id, enum pstore_type_id *type,
int *count, struct timespec *time,
char **buf, struct pstore_info *psi)
char **buf, bool *compressed,
struct pstore_info *psi)
{
ssize_t size;
ssize_t ecc_notice_size;

2
include/linux/pstore.h
View File

@ -55,7 +55,7 @@ struct pstore_info {
int (*close)(struct pstore_info *psi);
ssize_t (*read)(u64 *id, enum pstore_type_id *type,
int *count, struct timespec *time, char **buf,
struct pstore_info *psi);
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,