int verpop_str()
{ vertex_id v_id;
int popcount = 0;
FOR_ALL_VERTICES(v_id)
{ int valence = get_vertex_evalence(v_id);
if ( valence == 0 ) popcount += dissolve_vertex(v_id);
else if ( valence > 3 )
popcount += poponest(v_id,valence);
else if ( (valence >= 2) && (get_vattr(v_id) & (CONSTRAINT|BOUNDARY)) )
popcount += poponest(v_id,valence);
}
if ( popcount )
{ calc_content(Q_FIXED);
calc_pressure();
calc_energy();
}
return popcount;
}
/*
* NAME: jfs_lookup(dvp, vpp, pname, flag, vattrp, crp)
*
* FUNCTION: resolve <pname> in directory <dvp> to vnode <vpp>
* with a reference acquired and attribute <vattrp>.
*
* PARAMETERS: dvp _ directory vnode
* vpp - object vnode (out)
* pname - object name
* flag -
* vattrp - object attribute (out)
* crp - credential
*
* RETURN: errors from subroutines.
*/
jfs_lookup(
struct vnode *dvp,
struct vnode **vpp,
UniChar *pname, /* NULL terminated */
int32 flag,
struct vattr *vattrp,
struct ucred *crp)
{
int32 rc = 0;
struct vfs *vfsp = dvp->v_vfsp;
inode_t *dip = VP2IP(dvp); /* parent directory inode */
ino_t ino; /* object i_number */
inode_t *ip; /* object inode */
component_t dname; /* object name */
ncookie_t ncookie;
btstack_t btstack;
NOISE(1,("jfs_lookup: dip:0x%08x name:%s\n", dip, pname));
*vpp = NULL;
/* <dvp> must be a directory */
if ((dip->i_mode & IFMT) != IFDIR)
return ENOTDIR;
IREAD_LOCK(dip);
if (dip->i_nlink == 0)
{
rc = ENOENT;
goto out;
}
/*
* resolve name to i_number via dnlc/directory lookup
*/
getInumber:
/*
* for "." or "..", lookup directory inode
*/
if (pname[0] == '.')
{
/* looking up ".." */
if (pname[1] == '.' && pname[2] == '\0')
{
ino = dip->i_parent;
goto getInode;
}
/* looking up "." */
else if (pname[1] == '\0')
{
ip = dip;
jfs_hold(dvp);
*vpp = dvp;
goto getAttribute;
}
}
/*
* search dnlc/directory
*/
dname.name = pname;
dname.namlen = UniStrlen(pname);
if ((ino = ncLookup(dip->i_ipimap, dip->i_number, &dname, &ncookie)) == 0)
{
/*
* dnlc miss: search directory
*/
if (rc = dtSearch(dip, &dname, &ino, &btstack, JFS_LOOKUP))
goto out;
/* insert name entry to dnlc */
ncEnter(dip->i_ipimap, dip->i_number, &dname, ino, &ncookie);
}
/*
* resolve i_number to inode/vnode with a reference
*/
getInode:
ICACHE_LOCK();
rc = iget(vfsp, ino, &ip, 0);
ICACHE_UNLOCK();
if (rc)
goto out;
*vpp = IP2VP(ip);
/*
* get attribute
*/
getAttribute:
if (vattrp != NULL)
get_vattr(ip, vattrp);
out:
IREAD_UNLOCK(dip);
NOISE(1,("jfs_lookup: rc:%d\n", rc));
return rc;
}
