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_COPY_TO_USER(9) Memory Management in Linux _COPY_TO_USER(9)

NAME

_copy_to_user - Copy a block of data into user space.

SYNOPSIS

unsigned long _copy_to_user(void __user * to, const void * from, unsigned n);

ARGUMENTS

to
Destination address, in user space.
from
Source address, in kernel space.
n
Number of bytes to copy.

CONTEXT

User context only. This function may sleep.

DESCRIPTION

Copy data from kernel space to user space.
Returns number of bytes that could not be copied. On success, this will be zero.

COPYRIGHT

February 2017 Kernel Hackers Manual 3.16