linux/drivers/target/target_core_iblock.h
Elena Reshetova 5981c245a8 target/iblock: convert iblock_req.pending from atomic_t to refcount_t
refcount_t type and corresponding API should be
used instead of atomic_t when the variable is used as
a reference counter. This allows to avoid accidental
refcounter overflows that might lead to use-after-free
situations.

Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-05-01 22:20:43 -07:00

30 lines
612 B
C

#ifndef TARGET_CORE_IBLOCK_H
#define TARGET_CORE_IBLOCK_H
#include <linux/atomic.h>
#include <linux/refcount.h>
#include <target/target_core_base.h>
#define IBLOCK_VERSION "4.0"
#define IBLOCK_MAX_CDBS 16
#define IBLOCK_LBA_SHIFT 9
struct iblock_req {
refcount_t pending;
atomic_t ib_bio_err_cnt;
} ____cacheline_aligned;
#define IBDF_HAS_UDEV_PATH 0x01
struct iblock_dev {
struct se_device dev;
unsigned char ibd_udev_path[SE_UDEV_PATH_LEN];
u32 ibd_flags;
struct bio_set *ibd_bio_set;
struct block_device *ibd_bd;
bool ibd_readonly;
} ____cacheline_aligned;
#endif /* TARGET_CORE_IBLOCK_H */