Provided by:
linux-doc-2.6.15_2.6.15-23.39_all 
NAME
journal_errno - returns the journal’s error state.
SYNOPSIS
int journal_errno (journal_t * journal);
ARGUMENTS
journal
journal to examine.
DESCRIPTION
This is the errno numbet set with journal_abort, the last time the
journal was mounted - if the journal was stopped without calling abort
this will be 0.
If the journal has been aborted on this mount time -EROFS will be
returned.
AUTHORS
Roger Gammans <rgammans@computer-surgery.co.uk>, Stephen Tweedie
<sct@redhat.com>.