# HG changeset patch
# User Roy Marples <roy@marples.name>
# Date 1599036992 -3600
# Node ID 557a3f9f2be4feff22ac41b4852ac9ff5f4e55c9
# Parent  dead0d8414020933642f1bbdb45aae83c6c98f28
DHCP: allow leasetime -1 to represent infinity

Easier to enter than 4294967295 seconds which is the real
representation of infinity.

diff -r dead0d841402 -r 557a3f9f2be4 src/dhcpcd.8.in
--- a/src/dhcpcd.8.in	Tue Sep 01 12:24:42 2020 +0100
+++ b/src/dhcpcd.8.in	Wed Sep 02 09:56:32 2020 +0100
@@ -24,7 +24,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd May 31, 2020
+.Dd September 2, 2020
 .Dt DHCPCD 8
 .Os
 .Sh NAME
@@ -385,8 +385,10 @@
 .Nm
 will exit.
 .It Fl l , Fl Fl leasetime Ar seconds
-Request a specific lease time in
+Request a lease time of
 .Ar seconds .
+.Ar -1
+represents an infinite lease time.
 By default
 .Nm
 does not request any lease time and leaves it in the hands of the
diff -r dead0d841402 -r 557a3f9f2be4 src/dhcpcd.conf.5.in
--- a/src/dhcpcd.conf.5.in	Tue Sep 01 12:24:42 2020 +0100
+++ b/src/dhcpcd.conf.5.in	Wed Sep 02 09:56:32 2020 +0100
@@ -24,7 +24,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd June 18, 2020
+.Dd September 2, 2020
 .Dt DHCPCD.CONF 5
 .Os
 .Sh NAME
@@ -448,8 +448,14 @@
 This is on by default, but is documented here in the case where it is disabled
 globally but needs to be enabled for one interface.
 .It Ic leasetime Ar seconds
-Request a leasetime of
+Request a lease time of
 .Ar seconds .
+.Ar -1
+represents an infinite lease time.
+By default
+.Nm dhcpcd
+does not request any lease time and leaves it in the hands of the
+DHCP server.
 .It Ic link_rcvbuf Ar size
 Override the size of the link receive buffer from the kernel default.
 While
diff -r dead0d841402 -r 557a3f9f2be4 src/if-options.c
--- a/src/if-options.c	Tue Sep 01 12:24:42 2020 +0100
+++ b/src/if-options.c	Wed Sep 02 09:56:32 2020 +0100
@@ -761,6 +761,10 @@
 		break;
 	case 'l':
 		ARG_REQUIRED;
+		if (strcmp(arg, "-1") == 0) {
+			ifo->leasetime = DHCP_INFINITE_LIFETIME;
+			break;
+		}
 		ifo->leasetime = (uint32_t)strtou(arg, NULL,
 		    0, 0, UINT32_MAX, &e);
 		if (e) {