Merge branch 'PR/hardlink-mem-issues' of https://github.com/karelzak/…

…util-linux-work * 'PR/hardlink-mem-issues' of https://github.com/karelzak/util-linux-work: hardlink: fix memory corruption (size calculation)
karelzak · Jan 3, 2025 · 33d4a41 · 33d4a41
2 parents 5a295e9 + 70c1ffb
commit 33d4a41
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/lib/fileeq.c b/lib/fileeq.c
@@ -272,12 +272,12 @@ size_t ul_fileeq_set_size(struct ul_fileeq *eq, uint64_t filesiz,
 		nreads = filesiz / readsiz;
 		/* enlarge readsize for large files */
 		if (nreads > maxdigs)
-			readsiz = filesiz / maxdigs;
+			readsiz = (filesiz + maxdigs - 1) / maxdigs;
 		break;
 	}
 
 	eq->readsiz = readsiz;
-	eq->blocksmax = filesiz / readsiz;
+	eq->blocksmax = (filesiz + readsiz - 1) / readsiz;
 
 	DBG(EQ, ul_debugobj(eq, "set sizes: filesiz=%ju, maxblocks=%" PRIu64 ", readsiz=%zu",
 				eq->filesiz, eq->blocksmax, eq->readsiz));