kfifo_to_user (9) - Linux Man Pages

kfifo_to_user: copies data from the fifo into user space

NAME

kfifo_to_user - copies data from the fifo into user space

SYNOPSIS

kfifo_to_user(fifo, to, len, copied);

ARGUMENTS

fifo

address of the fifo to be used

to

where the data must be copied

len

the size of the destination buffer

copied

pointer to output variable to store the number of copied bytes

DESCRIPTION

This macro copies at most len bytes from the fifo into the to buffer and returns -EFAULT/0.

Note that with only one concurrent reader and one concurrent writer, you don't need extra locking to use these macro.

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