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Diffstat (limited to 'fs/xfs/scrub/xfarray.h')
-rw-r--r--fs/xfs/scrub/xfarray.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/fs/xfs/scrub/xfarray.h b/fs/xfs/scrub/xfarray.h
index 4ecac01363d9..62b9c506fdd1 100644
--- a/fs/xfs/scrub/xfarray.h
+++ b/fs/xfs/scrub/xfarray.h
@@ -54,6 +54,28 @@ static inline int xfarray_append(struct xfarray *array, const void *ptr)
uint64_t xfarray_length(struct xfarray *array);
int xfarray_load_next(struct xfarray *array, xfarray_idx_t *idx, void *rec);
+/*
+ * Iterate the non-null elements in a sparse xfarray. Callers should
+ * initialize *idx to XFARRAY_CURSOR_INIT before the first call; on return, it
+ * will be set to one more than the index of the record that was retrieved.
+ * Returns 1 if a record was retrieved, 0 if there weren't any more records, or
+ * a negative errno.
+ */
+static inline int
+xfarray_iter(
+ struct xfarray *array,
+ xfarray_idx_t *idx,
+ void *rec)
+{
+ int ret = xfarray_load_next(array, idx, rec);
+
+ if (ret == -ENODATA)
+ return 0;
+ if (ret == 0)
+ return 1;
+ return ret;
+}
+
/* Declarations for xfile array sort functionality. */
typedef cmp_func_t xfarray_cmp_fn;