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/*
* Copyright (c) 2023-2024 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/vnode.h>
#include <sys/errno.h>
#include <sys/mount.h>
#include <vm/dynalloc.h>
#include <string.h>
mountlist_t g_mountlist;
int
vfs_alloc_vnode(struct vnode **res, int type)
{
struct vnode *vp = dynalloc(sizeof(struct vnode));
if (vp == NULL) {
return -ENOMEM;
}
memset(vp, 0, sizeof(*vp));
vp->type = type;
*res = vp;
return 0;
}
/*
* Allocate a mount structure.
*
* @vp: Vnode this mount structure covers.
* @fip: File system information.
*/
struct mount *
vfs_alloc_mount(struct vnode *vp, struct fs_info *fip)
{
struct mount *mp;
mp = dynalloc(sizeof(*mp));
if (mp == NULL) {
return NULL;
}
memset(mp, 0, sizeof(*mp));
mp->vp = vp;
mp->mnt_ops = fip->vfsops;
return mp;
}
/*
* Release a vnode and its resources from
* memory.
*/
int
vfs_release_vnode(struct vnode *vp)
{
const struct vops *vops = vp->vops;
int status = 0;
if (vp == NULL) {
return -EINVAL;
}
if (vops->reclaim != NULL) {
status = vops->reclaim(vp);
}
dynfree(vp);
return status;
}
int
vfs_vop_lookup(struct vnode *vp, struct vop_lookup_args *args)
{
const struct vops *vops = vp->vops;
if (vops == NULL)
return -EIO;
if (vops->lookup == NULL)
return -EIO;
return vops->lookup(args);
}
int
vfs_vop_read(struct vnode *vp, struct sio_txn *sio)
{
const struct vops *vops = vp->vops;
if (vops == NULL)
return -EIO;
if (vops->read == NULL)
return -EIO;
return vops->read(vp, sio);
}
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