repart: Make sure we seek to beginning of partition target before copy

2023-03-16 22:10:50 +01:00
parent 9f94d2741f
commit 6eccec00fb
1 changed files with 3 additions and 0 deletions
@@ -3266,6 +3266,9 @@ static int partition_target_sync(Context *context, Partition *p, PartitionTarget
                if (lseek(whole_fd, p->offset, SEEK_SET) == (off_t) -1)
                        return log_error_errno(errno, "Failed to seek to partition offset: %m");

+                if (lseek(t->fd, 0, SEEK_SET) == (off_t) -1)
+                        return log_error_errno(errno, "Failed to seek to start of temporary file: %m");
+
                r = copy_bytes(t->fd, whole_fd, UINT64_MAX, COPY_REFLINK|COPY_HOLES|COPY_FSYNC);
                if (r < 0)
                        return log_error_errno(r, "Failed to copy bytes to partition: %m");