summaryrefslogtreecommitdiff
path: root/sys/vm/vm_vnode.c
diff options
context:
space:
mode:
Diffstat (limited to 'sys/vm/vm_vnode.c')
-rw-r--r--sys/vm/vm_vnode.c114
1 files changed, 0 insertions, 114 deletions
diff --git a/sys/vm/vm_vnode.c b/sys/vm/vm_vnode.c
deleted file mode 100644
index e3d95ac..0000000
--- a/sys/vm/vm_vnode.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/*
- * 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/types.h>
-#include <sys/errno.h>
-#include <sys/sio.h>
-#include <sys/vfs.h>
-#include <sys/cdefs.h>
-#include <vm/obj.h>
-#include <vm/vm.h>
-#include <vm/pager.h>
-
-static int vn_pager_get(struct vm_object *obj, off_t off, size_t len,
- struct vm_page *pg);
-
-static int vn_pager_store(struct vm_object *obj, off_t off, size_t len,
- struct vm_page *pg);
-
-/* Pager operations */
-struct vm_pagerops g_vnode_pagerops = {
- .get = vn_pager_get,
- .store = vn_pager_store
-};
-
-static inline void
-vn_prep_sio(struct sio_txn *sio, char *pg, off_t off, size_t len)
-{
- sio->len = __ALIGN_DOWN(len, vm_get_page_size());
- sio->buf = pg;
- sio->offset = off;
- sio->len = len;
-}
-
-static int
-vn_pager_io(struct vm_object *obj, off_t off, size_t len,
- struct vm_page *pg, bool out)
-{
- struct sio_txn sio;
- struct vnode *vp;
- ssize_t paged_bytes;
- char *dest;
- int res = 0;
-
- if (obj == NULL || pg == NULL) {
- return -EIO;
- }
-
- spinlock_acquire(&obj->lock);
- vm_object_ref(obj);
- dest = PHYS_TO_VIRT(pg->physaddr);
-
- /* Attempt to fetch the vnode */
- if ((vp = obj->vnode) == NULL) {
- res = -EIO;
- goto done;
- }
-
- /* Prepare the SIO transaction */
- vn_prep_sio(&sio, dest, off, len);
- if (sio.len == 0) {
- res = -EIO;
- goto done;
- }
-
- /* Perform I/O on the backing store */
- paged_bytes = out ? vfs_write(vp, &sio) : vfs_read(vp, &sio);
- if (paged_bytes < 0) {
- /* Failure */
- res = paged_bytes;
- goto done;
- }
-done:
- vm_object_unref(obj);
- spinlock_release(&obj->lock);
- return res;
-}
-
-static int
-vn_pager_store(struct vm_object *obj, off_t off, size_t len, struct vm_page *pg)
-{
- return vn_pager_io(obj, off, len, pg, true);
-}
-
-static int
-vn_pager_get(struct vm_object *obj, off_t off, size_t len, struct vm_page *pg)
-{
- return vn_pager_io(obj, off, len, pg, false);
-}