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Apparently pxeboot passes in a mygateway of non-zero sin length

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from DHCP in the event that no gateway is returned from DHCP, breaking
the assumption that we skip the routing insertion of the gateway
if the sin length is zero.  Check also for s_addr of 0 to avoid the
"Oh no, adding my default route failed" panic, making it possible
to pxeboot machines on segments without default routes.  Arguably
this could be a bug in pxeboot, or in the TUNABLE code, but this
makes my boxes boot.
This commit is contained in:
Robert Watson 2002-09-26 19:56:43 +00:00
parent c1e309b38b
commit 203639c449
1 changed files with 6 additions and 1 deletions
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7
sys/nfsclient/nfs_vfsops.c
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@ -443,8 +443,13 @@ nfs_mountroot(struct mount *mp, struct thread *td)
/*
* If the gateway field is filled in, set it as the default route.
* Note that pxeboot will set a default route of 0 if the route
* is not set by the DHCP server. Check also for a value of 0
* to avoid panicking inappropriately in that situation.
*/
if (nd->mygateway.sin_len != 0) {
printf("gateway: %d bytes\n", nd->mygateway.sin_len);
if (nd->mygateway.sin_len != 0 &&
nd->mygateway.sin_addr.s_addr != 0) {
struct sockaddr_in mask, sin;
bzero((caddr_t)&mask, sizeof(mask));