#define CAP_MTIOCGET (1<<20) /* Basic support for fileno and blkno */
#define CAP_REQMOUNT (1<<21) /* Require mount to read files back (typically: DVD) */
#define CAP_CHECKLABELS (1<<22) /* Check for ANSI/IBM labels */
+#define CAP_BLOCKCHECKSUM (1<<23) /* Create/test block checksum */
/* Test state */
#define dev_state(dev, st_state) ((dev)->state & (st_state))
int has_cap(int cap) const { return capabilities & cap; }
void clear_cap(int cap) { capabilities &= ~cap; }
void set_cap(int cap) { capabilities |= cap; }
+ bool do_checksum() const { return (capabilities & CAP_BLOCKCHECKSUM) != 0; }
int is_autochanger() const { return capabilities & CAP_AUTOCHANGER; }
int requires_mount() const { return capabilities & CAP_REQMOUNT; }
int is_removable() const { return capabilities & CAP_REM; }