SEQ_OPEN

Section: The Linux VFS (9)
Updated: February 2011
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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 lqdiscard this element and move onrq.  

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