/**
* mnt_tabdiff_next_change:
* @df: tabdiff pointer
* @itr: iterator
* @old_fs: returns the old entry or NULL if new entry added
* @new_fs: returns the new entry or NULL if old entry removed
* @oper: MNT_TABDIFF_{MOVE,UMOUNT,REMOUNT,MOUNT} flags
*
* The options @old_fs, @new_fs and @oper are optional.
*
* Returns: 0 on success, negative number in case of error or 1 at the end of list.
*/
int mnt_tabdiff_next_change(struct libmnt_tabdiff *df, struct libmnt_iter *itr,
struct libmnt_fs **old_fs, struct libmnt_fs **new_fs, int *oper)
{
int rc = 1;
struct tabdiff_entry *de = NULL;
if (!df || !itr)
return -EINVAL;
if (!itr->head)
MNT_ITER_INIT(itr, &df->changes);
if (itr->p != itr->head) {
MNT_ITER_ITERATE(itr, de, struct tabdiff_entry, changes);
rc = 0;
}
if (old_fs)
*old_fs = de ? de->old_fs : NULL;
if (new_fs)
*new_fs = de ? de->new_fs : NULL;
if (oper)
*oper = de ? de->oper : 0;
return rc;
}
/**
* mnt_table_next_fs:
* @tb: tab pointer
* @itr: iterator
* @fs: returns the next tab entry
*
* Returns: 0 on success, negative number in case of error or 1 at the end of list.
*
* Example:
* <informalexample>
* <programlisting>
* while(mnt_table_next_fs(tb, itr, &fs) == 0) {
* const char *dir = mnt_fs_get_target(fs);
* printf("mount point: %s\n", dir);
* }
* </programlisting>
* </informalexample>
*
* lists all mountpoints from fstab in reverse order.
*/
int mnt_table_next_fs(struct libmnt_table *tb, struct libmnt_iter *itr, struct libmnt_fs **fs)
{
int rc = 1;
if (!tb || !itr || !fs)
return -EINVAL;
*fs = NULL;
if (!itr->head)
MNT_ITER_INIT(itr, &tb->ents);
if (itr->p != itr->head) {
MNT_ITER_ITERATE(itr, *fs, struct libmnt_fs, ents);
rc = 0;
}
