table of contents
| SEQ_OPEN(9) | The Linux VFS | 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”.
COPYRIGHT¶
| June 2024 | Kernel Hackers Manual 3.10 |