2 #include <sys/socket.h>
3 #include <netinet/in.h>
11 #define ALIGN (sizeof(struct { char a; char *b; }) - sizeof(char *))
13 int getservbyname_r(const char *name, const char *prots,
14 struct servent *se, char *buf, size_t buflen, struct servent **res)
16 struct service servs[MAXSERVS];
17 int cnt, proto, align;
21 /* Don't treat numeric port number strings as service records. */
23 strtoul(name, &end, 10);
24 if (!*end) return ENOENT;
27 align = -(uintptr_t)buf & ALIGN-1;
28 if (buflen < 2*sizeof(char *)+align)
32 if (!prots) proto = 0;
33 else if (!strcmp(prots, "tcp")) proto = IPPROTO_TCP;
34 else if (!strcmp(prots, "udp")) proto = IPPROTO_UDP;
37 cnt = __lookup_serv(servs, name, proto, 0, 0);
38 if (cnt<0) switch (cnt) {
46 se->s_name = (char *)name;
47 se->s_aliases = (void *)buf;
48 se->s_aliases[0] = se->s_name;
50 se->s_port = htons(servs[0].port);
51 se->s_proto = servs[0].proto == IPPROTO_TCP ? "tcp" : "udp";