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Allow kernels loaded by pxeboot, which was compiled with LOADER_TFTP_SUPPORT,

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to stll be able to mount NFS root as prescribed by DCHP configuration. Since
pxeboot is using TFTP to get to the files, pxeboot can not rely on NFS to
provide it a root directory hande as a side effect. pxeboot has to  make RPC
mount call itself.
This commit is contained in:
Alexander Kabaev 2005-03-12 21:26:53 +00:00
parent bc8f83f849
commit 721d5bfe2e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=143476
1 changed files with 24 additions and 0 deletions
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24
sys/boot/i386/libi386/pxe.c
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@ -413,6 +413,22 @@ struct nfs_iodesc {
/* structure truncated here */
};
extern struct nfs_iodesc nfs_root_node;
extern int rpc_port;
static void
pxe_rpcmountcall()
{
struct iodesc *d;
int error;
if (!(d = socktodesc(pxe_sock)))
return;
d->myport = htons(--rpc_port);
d->destip = rootip;
if ((error = nfs_getrootfh(d, rootpath, nfs_root_node.fh)) != 0)
printf("NFS MOUNT RPC error: %d\n", error);
nfs_root_node.iodesc = d;
}
static void
pxe_setnfshandle(char *rootpath)
@ -421,6 +437,14 @@ pxe_setnfshandle(char *rootpath)
u_char *fh;
char buf[2 * NFS_FHSIZE + 3], *cp;
/*
* If NFS files were never opened, we need to do mount call
* ourselves. Use nfs_root_node.iodesc as flag indicating
* previous NFS usage.
*/
if (nfs_root_node.iodesc == NULL)
pxe_rpcmountcall();
fh = &nfs_root_node.fh[0];
buf[0] = 'X';
cp = &buf[1];