seq_open(9)
NAME
seq_open - initialize sequential file
SYNOPSIS
int seq_open(struct file * file, const struct seq_operations * op);
ARGUMENTS
- file
- file we initialize
- op
- method table describing the sequence
DESCRIPTION
seq_open sets file, associating it with a sequence described by op.
op->start sets the iterator up and returns the first element of
sequence. op->stop shuts it down. op->next returns the next element
of sequence. op->show prints element into the buffer. In case of error
->start and ->next return ERR_PTR(error). In the end of sequence they
return NULL. ->show returns 0 in case of success and negative number in
case of error. Returning SEQ_SKIP means "discard this element and move
on".