2 #include <sys/socket.h>
3 #include <netinet/in.h>
9 int getservbyname_r(const char *name, const char *prots,
10 struct servent *se, char *buf, size_t buflen, struct servent **res)
12 struct addrinfo *ai, hint = { .ai_family = AF_INET };
16 int r = getservbyname_r(name, "tcp", se, buf, buflen, res);
17 if (r) r = getservbyname_r(name, "udp", se, buf, buflen, res);
22 i = (uintptr_t)buf & sizeof(char *)-1;
23 if (!i) i = sizeof(char *);
24 if (buflen < 3*sizeof(char *)-i)
26 buf += sizeof(char *)-i;
27 buflen -= sizeof(char *)-i;
29 if (!strcmp(prots, "tcp")) hint.ai_protocol = IPPROTO_TCP;
30 else if (!strcmp(prots, "udp")) hint.ai_protocol = IPPROTO_UDP;
33 switch (getaddrinfo(0, name, &hint, &ai)) {
43 se->s_name = (char *)name;
44 se->s_aliases = (void *)buf;
45 se->s_aliases[0] = se->s_name;
47 se->s_port = ((struct sockaddr_in *)ai->ai_addr)->sin_port;
48 se->s_proto = (char *)prots;