Function agent_bash_drain

ds4_agent.c:6728–6741

                fclose(fp);
                free(buf);
                snprintf(err, errlen, "file too large: %s exceeds %d bytes",
                         path, AGENT_FILE_MAX_BYTES);
                return -1;
            }
            if (used + n + 1 > cap) {
                cap = cap ? cap * 2 : 8192;
                while (cap < used + n + 1) cap *= 2;
                buf = xrealloc(buf, cap);
            }
            memcpy(buf + used, tmp, n);
            used += n;
            buf[used] = '\0';
        }
        if (n < sizeof(tmp)) {
            if (ferror(fp)) {
                snprintf(err, errlen, "read %s: %s", path, strerror(errno));
                fclose(fp);