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udhcpd: add -I LOCAL_ADDR option

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2013-03-13 22:27:37 +01:00
parent b79a0fef99
commit e3f5b73ad0
1 changed files with 13 additions and 4 deletions
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17
networking/udhcp/dhcpd.c
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@ -27,6 +27,7 @@
//usage: "DHCP server\n"
//usage: "\n -f Run in foreground"
//usage: "\n -S Log to syslog too"
//usage: "\n -I ADDR Local address"
//usage: IF_FEATURE_UDHCP_PORT(
//usage: "\n -P N Use port N (default 67)"
//usage: )
@ -302,6 +303,7 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
unsigned num_ips;
unsigned opt;
struct option_set *option;
char *str_I = str_I;
IF_FEATURE_UDHCP_PORT(char *str_P;)
#if ENABLE_FEATURE_UDHCP_PORT
@ -312,8 +314,10 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
#if defined CONFIG_UDHCP_DEBUG && CONFIG_UDHCP_DEBUG >= 1
opt_complementary = "vv";
#endif
opt = getopt32(argv, "fSv"
IF_FEATURE_UDHCP_PORT("P:", &str_P)
opt = getopt32(argv, "fSI:v"
IF_FEATURE_UDHCP_PORT("P:")
, &str_I
IF_FEATURE_UDHCP_PORT(, &str_P)
IF_UDHCP_VERBOSE(, &dhcp_verbose)
);
if (!(opt & 1)) { /* no -f */
@ -326,8 +330,13 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
openlog(applet_name, LOG_PID, LOG_DAEMON);
logmode |= LOGMODE_SYSLOG;
}
if (opt & 4) { /* -I */
len_and_sockaddr *lsa = xhost_and_af2sockaddr(str_I, 0, AF_INET);
server_config.server_nip = lsa->u.sin.sin_addr.s_addr;
free(lsa);
}
#if ENABLE_FEATURE_UDHCP_PORT
if (opt & 8) { /* -P */
if (opt & 16) { /* -P */
SERVER_PORT = xatou16(str_P);
CLIENT_PORT = SERVER_PORT + 1;
}
@ -367,7 +376,7 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
if (udhcp_read_interface(server_config.interface,
&server_config.ifindex,
&server_config.server_nip,
(server_config.server_nip == 0 ? &server_config.server_nip : NULL),
server_config.server_mac)
) {
retval = 1;