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arping: stop using last gethostbyname2 in the tree

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hostname: small optimization
This commit is contained in:
Denis Vlasenko 2007-01-25 19:44:38 +00:00
parent aeb4bdd582
commit 90ec4dc0c7
3 changed files with 9 additions and 12 deletions
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2
include/libbb.h
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@ -338,8 +338,6 @@ char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa, socklen_t salen)
// "old" (ipv4 only) API
// users: traceroute.c hostname.c ifconfig.c ping.c
struct hostent *xgethostbyname(const char *name);
//TODO: eliminate gethostbyname2 in arping (the only remaining place),
//use host_and_af2sockaddr instead.
extern char *xstrdup(const char *s);

12
networking/arping.c
View File

@ -305,13 +305,11 @@ int arping_main(int argc, char **argv)
}
if (!inet_aton(target, &dst)) {
struct hostent *hp;
hp = gethostbyname2(target, AF_INET);
if (!hp) {
bb_error_msg_and_die("invalid or unknown target %s", target);
}
memcpy(&dst, hp->h_addr, 4);
len_and_sockaddr *lsa;
lsa = host_and_af2sockaddr(target, 0, AF_INET);
memcpy(&dst, &lsa->sin.sin_addr.s_addr, 4);
if (ENABLE_FEATURE_CLEAN_UP)
free(lsa);
}
if (source && !inet_aton(source, &src)) {

7
networking/hostname.c
View File

@ -48,11 +48,12 @@ int hostname_main(int argc, char **argv)
OPT_f = 0x2,
OPT_i = 0x4,
OPT_s = 0x8,
OPT_F = 0x8,
OPT_dfis = 0xf,
};
char buf[256];
char *hostname_str = NULL;
char *hostname_str;
if (argc < 1)
bb_show_usage();
@ -70,7 +71,7 @@ int hostname_main(int argc, char **argv)
puts(hp->h_name);
} else if (option_mask32 & OPT_s) {
if (p != NULL) {
*p = 0;
*p = '\0';
}
puts(hp->h_name);
} else if (option_mask32 & OPT_d) {
@ -84,7 +85,7 @@ int hostname_main(int argc, char **argv)
}
}
/* Set the hostname */
else if (hostname_str != NULL) {
else if (option_mask32 & OPT_F) {
do_sethostname(hostname_str, 1);
} else if (optind < argc) {
do_sethostname(argv[optind], 0);