/*
* See the comment in vfs.h for what is expected of this function.
*
* When this function returns, the inode refcount should be decremented.
*
* You probably want to use s5_free_inode() if there are no more links to
* the inode, and dont forget to unpin the page
*/
static void
s5fs_delete_vnode(vnode_t *vnode)
{
pframe_t *p;
mmobj_t *fs_mmobj = S5FS_TO_VMOBJ(VNODE_TO_S5FS(vnode));
if (pframe_get(fs_mmobj, S5_INODE_BLOCK(vnode->vn_vno), &p)){
panic("pframe_get failed. What the hell do we do?\n");
}
s5_inode_t *inode = ((s5_inode_t *) p->pf_addr) + S5_INODE_OFFSET(vnode->vn_vno);
dbg(DBG_S5FS, "decrementing link count on inode %d from %d to %d\n",
inode->s5_number, inode->s5_linkcount,inode->s5_linkcount - 1);
inode->s5_linkcount--;
if (inode->s5_linkcount == 0){
s5_free_inode(vnode);
} else {
s5_dirty_inode(VNODE_TO_S5FS(vnode), inode);
}
pframe_unpin(p);
}
/*
* s5fs_delete_vnode:
* s5fs_delete_vnode is called by vput when the
* specified vnode_t no longer needs to exist
* param *vnode: the pointer to the vnode object
*/
static void
s5fs_delete_vnode(vnode_t *vnode)
{
dbg(DBG_S5FS, "{\n");
KASSERT(vnode != NULL);
KASSERT(vnode->vn_fs != NULL);
/* Lock */
kmutex_lock(&vnode->vn_mutex);
pframe_t* page = NULL;
int ret = pframe_get(S5FS_TO_VMOBJ(FS_TO_S5FS(vnode->vn_fs)),
S5_INODE_BLOCK(vnode->vn_vno), &page);
KASSERT(ret == 0);
KASSERT(page != NULL);
s5_inode_t* inode = ((s5_inode_t*)page->pf_addr) +
S5_INODE_OFFSET(vnode->vn_vno);
inode->s5_linkcount--;
s5_dirty_inode(VNODE_TO_S5FS(vnode), inode);
KASSERT(VNODE_TO_S5INODE(vnode) == inode);
KASSERT(inode->s5_linkcount >= 0);
if (inode->s5_linkcount== 0)
{
s5_free_inode(vnode);
}
pframe_unpin(page);
/* Unlock */
kmutex_unlock(&vnode->vn_mutex);
dbg(DBG_S5FS, "}\n");
}
