#include <string.h> extern int udhcpd_main(int argc, char *argv[]); extern int udhcpc_main(int argc, char *argv[]); int main(int argc, char *argv[]) { int ret = 0; char *base = strrchr(argv[0], '/'); if (strstr(base ? (base + 1) : argv[0], "dhcpd")) ret = udhcpd_main(argc, argv); else ret = udhcpc_main(argc, argv); return ret; }