journal: Don't allocate objects above UINT32_MAX in compact mode

To allow storing offsets as 32-bit, we should never allocate objects outside of the 32-bit range.
2022-10-07 12:20:08 +02:00
parent c92f1ebe5d
commit d06727aec2
1 changed files with 4 additions and 0 deletions
@@ -586,6 +586,10 @@ static int journal_file_allocate(JournalFile *f, uint64_t offset, uint64_t size)
        if (f->metrics.max_size > 0 && new_size > f->metrics.max_size)
                return -E2BIG;

+        /* Refuse to go over 4G in compact mode so offsets can be stored in 32-bit. */
+        if (JOURNAL_HEADER_COMPACT(f->header) && new_size > UINT32_MAX)
+                return -E2BIG;
+
        if (new_size > f->metrics.min_size && f->metrics.keep_free > 0) {
                struct statvfs svfs;