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/*
* Copyright (c) 2025 Ian Marco Moffett and the Osmora Team.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Hyra nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/errno.h>
#include <os/vnode.h>
#include <vm/kalloc.h>
#include <lib/string.h>
int
vnode_init(struct vnode **vp_res, vtype_t type)
{
struct vnode *vp;
if (vp_res == NULL) {
return -EINVAL;
}
switch (type) {
case VREG:
case VDIR:
case VCHR:
case VBLK:
break;
default:
return -EINVAL;
}
vp = kalloc(sizeof(*vp));
if (vp == NULL) {
return -ENOMEM;
}
memset(vp, 0, sizeof(*vp));
vp->ref = 1;
vp->type = type;
*vp_res = vp;
return 0;
}
int
vnode_release(struct vnode *vp)
{
struct vops *vops;
if (vp == NULL) {
return -EINVAL;
}
vops = &vp->vops;
/*
* If there are zero outstanding references to this
* vnode, release it from memory.
*/
if ((vp->ref--) > 0) {
return vp->ref;
}
if (vops->reclaim != NULL) {
vops->reclaim(vp);
}
kfree(vp);
return 0;
}
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