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arp: fix -H/-t handling.

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While at it, shrank code.
function                                             old     new   delta
arp_main                                            1558    1487     -71

Signed-off-by: Kuleshov Aleksey <rndfax@yandex.ru>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Kuleshov Aleksey 2013-02-04 15:14:20 +01:00 committed by Denys Vlasenko
parent 6e29d07417
commit a8816dafc4
1 changed files with 12 additions and 14 deletions
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26
networking/arp.c
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@ -477,28 +477,33 @@ static int arp_show(char *name)
int arp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int arp_main(int argc UNUSED_PARAM, char **argv)
{
const char *hw_type = "ether";
const char *hw_type;
const char *protocol;
unsigned opts;
INIT_G();
xmove_fd(xsocket(AF_INET, SOCK_DGRAM, 0), sockfd);
ap = get_aftype(DFLT_AF);
if (!ap)
bb_error_msg_and_die("%s: %s not supported", DFLT_AF, "address family");
/* Defaults are always supported */
//if (!ap)
// bb_error_msg_and_die("%s: %s not supported", DFLT_AF, "address family");
hw = get_hwtype(DFLT_HW);
//if (!hw)
// bb_error_msg_and_die("%s: %s not supported", DFLT_HW, "hardware type");
opts = getopt32(argv, "A:p:H:t:i:adnDsv", &protocol, &protocol,
&hw_type, &hw_type, &device);
argv += optind;
if (opts & (ARP_OPT_A | ARP_OPT_p)) {
ap = get_aftype(protocol);
if (ap == NULL)
if (!ap)
bb_error_msg_and_die("%s: unknown %s", protocol, "address family");
}
if (opts & (ARP_OPT_A | ARP_OPT_p)) {
if (opts & (ARP_OPT_H | ARP_OPT_t)) {
hw = get_hwtype(hw_type);
if (hw == NULL)
if (!hw)
bb_error_msg_and_die("%s: unknown %s", hw_type, "hardware type");
hw_set = 1;
}
@ -507,14 +512,6 @@ int arp_main(int argc UNUSED_PARAM, char **argv)
if (ap->af != AF_INET) {
bb_error_msg_and_die("%s: kernel only supports 'inet'", ap->name);
}
/* If no hw type specified get default */
if (!hw) {
hw = get_hwtype(DFLT_HW);
if (!hw)
bb_error_msg_and_die("%s: %s not supported", DFLT_HW, "hardware type");
}
if (hw->alen <= 0) {
bb_error_msg_and_die("%s: %s without ARP support",
hw->name, "hardware type");
@ -528,6 +525,7 @@ int arp_main(int argc UNUSED_PARAM, char **argv)
return arp_set(argv);
return arp_del(argv);
}
//if (opts & ARP_OPT_a) - default
return arp_show(argv[0]);
}