dexec_open
fp = dexec_open(bulk->s1, cav, cac, &pid, benv, 0, 0);
FILE *dexec_open(const char *logid, const char **cav, int cac,
fp = dexec_open(portpath + strlen(DPortsPath) + 1, cav, cac,
fp = dexec_open(NULL, cav, cac, &pid, NULL, 1, 0);
fp = dexec_open(portpath + strlen(DPortsPath) + 1, cav, cac,
fp = dexec_open(NULL, cav, cac, &pid, NULL, 1, 0);
fp = dexec_open(NULL, cav, cac, &pid, NULL, 1, 0);