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-rw-r--r--src/journal/journal-verify.c16
1 files changed, 13 insertions, 3 deletions
diff --git a/src/journal/journal-verify.c b/src/journal/journal-verify.c
index ce734d8df7..cf5be1f86a 100644
--- a/src/journal/journal-verify.c
+++ b/src/journal/journal-verify.c
@@ -69,6 +69,16 @@ static void draw_progress(uint64_t p, usec_t *last_usec) {
fflush(stdout);
}
+static uint64_t scale_progress(uint64_t scale, uint64_t p, uint64_t m) {
+
+ /* Calculates scale * p / m, but handles m == 0 safely, and saturates */
+
+ if (p >= m || m == 0)
+ return scale;
+
+ return scale * p / m;
+}
+
static void flush_progress(void) {
unsigned n, i;
@@ -584,7 +594,7 @@ static int verify_hash_table(
uint64_t last = 0, p;
if (show_progress)
- draw_progress(0xC000 + (0x3FFF * i / n), last_usec);
+ draw_progress(0xC000 + scale_progress(0x3FFF, i, n), last_usec);
p = le64toh(f->data_hash_table[i].head_hash_offset);
while (p != 0) {
@@ -726,7 +736,7 @@ static int verify_entry_array(
Object *o;
if (show_progress)
- draw_progress(0x8000 + (0x3FFF * i / n), last_usec);
+ draw_progress(0x8000 + scale_progress(0x3FFF, i, n), last_usec);
if (a == 0) {
error(a, "array chain too short at %"PRIu64" of %"PRIu64, i, n);
@@ -863,7 +873,7 @@ int journal_file_verify(
p = le64toh(f->header->header_size);
while (p != 0) {
if (show_progress)
- draw_progress(0x7FFF * p / le64toh(f->header->tail_object_offset), &last_usec);
+ draw_progress(scale_progress(0x7FFF, p, le64toh(f->header->tail_object_offset)), &last_usec);
r = journal_file_move_to_object(f, OBJECT_UNUSED, p, &o);
if (r < 0) {