Determines the completion status of the buffer.
#include <sys/types.h>
#include <sys/errno.h>
#include <sys/buf.h>int geterror ( bp)
struct buf *bp;
| Item | Description |
|---|---|
| bp | Specifies the address
of the buffer structure whose status
is to be checked. On a platform that supports storage keys, the passed in bp parameter must be in the KKEY_PUBLIC or KKEY_BLOCK_DEV protection domain. |
The geterror kernel service checks the specified buffer to see if the b_error flag is set. If that flag is not set, the geterror service returns 0. Otherwise, it returns the nonzero B_ERROR value or the EIO value (if b_error is 0).
The geterror kernel service can be called from either the process or interrupt environment.
| Item | Description |
|---|---|
| 0 | Indicates that no I/O error occurred on the buffer. |
| b_error value | Indicates that an I/O error occurred on the buffer. |
| EIO | Indicates that an unknown I/O error occurred on the buffer. |