user_regset_get_fn —
type of get function in struct user_regset
typedef int user_regset_get_fn ( | struct task_struct * target, |
| const struct user_regset * regset, | |
| unsigned int pos, | |
| unsigned int count, | |
| void * kbuf, | |
void __user * ubuf); |
targetthread being examined
regsetregset being examined
posoffset into the regset data to access, in bytes
countamount of data to copy, in bytes
kbuf
if not NULL, a kernel-space pointer to copy into
ubuf
if kbuf is NULL, a user-space pointer to copy into
Fetch register values. Return 0 on success; -EIO or -ENODEV
are usual failure returns. The pos and count values are in
bytes, but must be properly aligned. If kbuf is non-null, that
buffer is used and ubuf is ignored. If kbuf is NULL, then
ubuf gives a userland pointer to access directly, and an -EFAULT
return value is possible.