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DEVFS needs a special bdevvp().

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I just noticed some junk in my patch.  I'll remove that in a sec.
This commit is contained in:
Poul-Henning Kamp 1996-07-24 21:22:36 +00:00
parent e83cf165d6
commit c74bb98638
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=17273
1 changed files with 37 additions and 1 deletions
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38
sys/miscfs/devfs/devfs_tree.c
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@ -2,7 +2,7 @@
/*
* Written by Julian Elischer (julian@DIALix.oz.au)
*
* $Header: /home/ncvs/src/sys/miscfs/devfs/devfs_tree.c,v 1.24 1996/04/07 01:15:01 joerg Exp $
* $Header: /home/ncvs/src/sys/miscfs/devfs/devfs_tree.c,v 1.25 1996/06/12 05:08:29 gpalmer Exp $
*/
#include "param.h"
@ -783,6 +783,42 @@ DBPRINT((" vntodn "));
return(0);
}
static dn_p
findbdev(dev_t dev, dn_p dir)
{
devnm_p newfp;
dn_p dnp;
for(newfp = dir->by.Dir.dirlist;newfp;newfp=newfp->next) {
dnp = newfp->dnp;
if (dnp->type == DEV_BDEV && dnp->by.Bdev.dev == dev) {
return (dnp);
}
if (dnp->type == DEV_DIR) {
if (dnp = findbdev(dev, dnp))
return dnp;
}
}
return (0);
}
/*
* Create a vnode for a block device.
* Used for root filesystem, argdev, and swap areas.
* Also used for memory file system special devices.
*/
int
bdevvp(dev_t dev, struct vnode **vpp)
{
dn_p dnp = 0;
dnp= findbdev(dev, dev_root->dnp);
if (!dnp)
return (0);
return (devfs_dntovn(dnp, vpp));
}
/***************************************************************\
* given a dev_node, find the appropriate vnode if one is already*
* associated, or get a new one an associate it with the dev_node*