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libblockdriver: various updates

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- internal structure rearrangement;
- respond to char device open requests to avoid hanging VFS threads;
- make drivers use designated initializers;
- use devminor_t for all minor device numbers;
- change bdr_other hook to take ipc_status and return nothing;
- fix default geometry computation;
- add support for sef_cancel.

Change-Id: Ia063a136a3ddb2b78de36180feda870605753d70
This commit is contained in:
David van Moolenbroek
2013-09-11 13:33:00 +02:00
committed by Lionel Sambuc
parent 26cb85535e
commit 0f7f3c0d54
14 changed files with 313 additions and 356 deletions
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24
include/minix/blockdriver.h
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@@ -15,19 +15,19 @@ typedef enum {
/* Entry points into the device dependent code of block drivers. */
struct blockdriver {
blockdriver_type_t bdr_type;
int(*bdr_open) (dev_t minor, int access);
int(*bdr_close) (dev_t minor);
ssize_t(*bdr_transfer) (dev_t minor, int do_write, u64_t pos,
endpoint_t endpt, iovec_t *iov, unsigned count, int flags);
int(*bdr_ioctl) (dev_t minor, unsigned int request, endpoint_t endpt,
int (*bdr_open)(devminor_t minor, int access);
int (*bdr_close)(devminor_t minor);
ssize_t (*bdr_transfer)(devminor_t minor, int do_write, u64_t pos,
endpoint_t endpt, iovec_t *iov, unsigned int count, int flags);
int (*bdr_ioctl)(devminor_t minor, unsigned int request, endpoint_t endpt,
cp_grant_id_t grant);
void(*bdr_cleanup) (void);
struct device *(*bdr_part)(dev_t minor);
void(*bdr_geometry) (dev_t minor, struct part_geom *part);
void(*bdr_intr) (unsigned int irqs);
void(*bdr_alarm) (clock_t stamp);
int(*bdr_other) (message *m_ptr);
int(*bdr_device) (dev_t minor, device_id_t *id);
void (*bdr_cleanup)(void);
struct device *(*bdr_part)(devminor_t minor);
void (*bdr_geometry)(devminor_t minor, struct part_geom *part);
void (*bdr_intr)(unsigned int mask);
void (*bdr_alarm)(clock_t stamp);
void (*bdr_other)(message *m_ptr, int ipc_status);
int (*bdr_device)(devminor_t minor, device_id_t *id);
};
/* Functions defined by libblockdriver. These can be used for both