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authorDenys Vlasenko <vda.linux@googlemail.com>2010-03-21 01:22:07 (GMT)
committer Denys Vlasenko <vda.linux@googlemail.com>2010-03-21 01:22:07 (GMT)
commit2e7aa928360eb9b1c90fa2356734cee794b66516 (patch)
tree58d8cb605c2a339076dc1e097c8137a8a2e176b7
parente5ce91b41b657a0dbd1db442ebc47f4c935e7d1f (diff)
downloadbusybox-2e7aa928360eb9b1c90fa2356734cee794b66516.tar.gz
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udhcp: tweak udhcpd.conf example and comments. no code changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--examples/udhcp/udhcpd.conf41
-rw-r--r--networking/udhcp/dhcpd.c2
-rw-r--r--networking/udhcp/dhcpd.h4
-rw-r--r--networking/udhcp/options.h3
4 files changed, 27 insertions, 23 deletions
diff --git a/examples/udhcp/udhcpd.conf b/examples/udhcp/udhcpd.conf
index a27a053..354e6e1 100644
--- a/examples/udhcp/udhcpd.conf
+++ b/examples/udhcp/udhcpd.conf
@@ -45,9 +45,12 @@ interface eth0
#notify_file dumpleases # useful for debugging
# The following are bootp specific options
-#siaddr 192.168.0.22 #default: 0.0.0.0
-#sname zorak #default: none
-#boot_file /var/nfs_root #default: none
+# next server to use in bootstrap
+#siaddr 192.168.0.22 # default: 0.0.0.0 (none)
+# tftp server name
+#sname zorak # default: none
+# tftp file to download (e.g. kernel image)
+#boot_file /var/nfs_root # default: none
# Static leases map
#static_lease 00:60:08:11:CE:4E 192.168.0.54
@@ -56,7 +59,7 @@ interface eth0
# The remainder of options are DHCP options and can be specified with the
# keyword 'opt' or 'option'. If an option can take multiple items, such
# as the dns option, they can be listed on the same line, or multiple
-# lines. The only option with a default is 'lease'.
+# lines.
# Examples:
opt dns 192.168.10.2 192.168.10.10
option subnet 255.255.255.0
@@ -64,7 +67,7 @@ opt router 192.168.10.2
opt wins 192.168.10.10
option dns 129.219.13.81 # appended to above DNS servers for a total of 3
option domain local
-option lease 864000 # 10 days
+option lease 864000 # default: 10 days
# Currently supported options (for more info, see options.c):
#opt lease NUM
@@ -73,18 +76,18 @@ option lease 864000 # 10 days
#opt router IP_LIST
#opt ipttl NUM
#opt mtu NUM
-#opt hostname STRING - client's hostname
-#opt domain STRING - client's domain name
-#opt search STRING_LIST - search domains
+#opt hostname STRING # client's hostname
+#opt domain STRING # client's domain suffix
+#opt search STRING_LIST # search domains
#opt nisdomain STRING
-#opt timezone NUM - (localtime - UTC_time) in seconds. signed
-#opt tftp STRING - TFTP server name
-#opt bootfile STRING - file (kernel image) to load for booting
-#opt bootsize NUM - size of that file
-#opt rootpath STRING - (NFS) path to mount as root fs
+#opt timezone NUM # (localtime - UTC_time) in seconds. signed
+#opt tftp STRING # tftp server name
+#opt bootfile STRING # tftp file to download (e.g. kernel image)
+#opt bootsize NUM # size of that file
+#opt rootpath STRING # (NFS) path to mount as root fs
#opt wpad STRING
-#opt serverid IP - by default, server's IP
-#opt message STRING - error message (udhcpd sends it on success too)
+#opt serverid IP # default: server's IP
+#opt message STRING # error message (udhcpd sends it on success too)
# Options specifying server(s)
#opt dns IP_LIST
#opt wins IP_LIST
@@ -93,7 +96,7 @@ option lease 864000 # 10 days
#opt lprsrv IP_LIST
#opt swapsrv IP
# Obsolete options, no longer supported
-#opt logsrv IP_LIST - 704/UDP log server (not syslog!)
-#opt namesrv IP_LIST - IEN 116 name server, obsolete (August 1979!!!)
-#opt cookiesrv IP_LIST - RFC 865 "quote of the day" server, rarely (never?) used
-#opt timesrv IP_LIST - RFC 868 time server, rarely (never?) used
+#opt logsrv IP_LIST # 704/UDP log server (not syslog!)
+#opt namesrv IP_LIST # IEN 116 name server, obsolete (August 1979!!!)
+#opt cookiesrv IP_LIST # RFC 865 "quote of the day" server, rarely (never?) used
+#opt timesrv IP_LIST # RFC 868 time server, rarely (never?) used
diff --git a/networking/udhcp/dhcpd.c b/networking/udhcp/dhcpd.c
index cc4cb92..f594bad 100644
--- a/networking/udhcp/dhcpd.c
+++ b/networking/udhcp/dhcpd.c
@@ -319,7 +319,7 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
bb_info_msg("%s (v"BB_VER") started", applet_name);
option = find_option(server_config.options, DHCP_LEASE_TIME);
- server_config.max_lease_sec = LEASE_TIME;
+ server_config.max_lease_sec = DEFAULT_LEASE_TIME;
if (option) {
move_from_unaligned32(server_config.max_lease_sec, option->data + OPT_DATA);
server_config.max_lease_sec = ntohl(server_config.max_lease_sec);
diff --git a/networking/udhcp/dhcpd.h b/networking/udhcp/dhcpd.h
index b55fd6c..2f2f5b3 100644
--- a/networking/udhcp/dhcpd.h
+++ b/networking/udhcp/dhcpd.h
@@ -7,8 +7,8 @@ PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
/* Defaults you may want to tweak */
/* Default max_lease_sec */
-#define LEASE_TIME (60*60*24 * 10)
-#define LEASES_FILE CONFIG_DHCPD_LEASES_FILE
+#define DEFAULT_LEASE_TIME (60*60*24 * 10)
+#define LEASES_FILE CONFIG_DHCPD_LEASES_FILE
/* Where to find the DHCP server configuration file */
#define DHCPD_CONF_FILE "/etc/udhcpd.conf"
diff --git a/networking/udhcp/options.h b/networking/udhcp/options.h
index b7c9d8f..05090f1 100644
--- a/networking/udhcp/options.h
+++ b/networking/udhcp/options.h
@@ -35,7 +35,8 @@ enum {
/* DHCP protocol. See RFC 2131 */
#define DHCP_MAGIC 0x63825363
-/* DHCP option codes (partial list). See RFC 2132.
+/* DHCP option codes (partial list). See RFC 2132 and
+ * http://www.iana.org/assignments/bootp-dhcp-parameters/
* Commented out options are handled by common option machinery,
* uncommented ones have spacial cases (grep for them to see).
*/