43f5681c36
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
347 lines
8.6 KiB
C
347 lines
8.6 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2010-2012 Semihalf.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mount.h>
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#include <sys/mutex.h>
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#include <sys/namei.h>
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#include <sys/sysctl.h>
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#include <sys/vnode.h>
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#include <sys/buf.h>
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#include <sys/bio.h>
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <vm/vm_kern.h>
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#include <vm/vm_page.h>
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#include <fs/nandfs/nandfs_mount.h>
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#include <fs/nandfs/nandfs.h>
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#include <fs/nandfs/nandfs_subr.h>
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int
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nandfs_vblock_alloc(struct nandfs_device *nandfsdev, nandfs_daddr_t *vblock)
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{
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struct nandfs_node *dat;
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struct nandfs_mdt *mdt;
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struct nandfs_alloc_request req;
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struct nandfs_dat_entry *dat_entry;
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uint64_t start;
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uint32_t entry;
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int locked, error;
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dat = nandfsdev->nd_dat_node;
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mdt = &nandfsdev->nd_dat_mdt;
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start = nandfsdev->nd_last_cno + 1;
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locked = NANDFS_VOP_ISLOCKED(NTOV(dat));
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if (!locked)
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VOP_LOCK(NTOV(dat), LK_EXCLUSIVE);
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req.entrynum = 0;
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/* Alloc vblock number */
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error = nandfs_find_free_entry(mdt, dat, &req);
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if (error) {
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nandfs_error("%s: cannot find free vblk entry\n",
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__func__);
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if (!locked)
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VOP_UNLOCK(NTOV(dat), 0);
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return (error);
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}
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/* Read/create buffer */
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error = nandfs_get_entry_block(mdt, dat, &req, &entry, 1);
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if (error) {
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nandfs_error("%s: cannot get free vblk entry\n",
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__func__);
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nandfs_abort_entry(&req);
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if (!locked)
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VOP_UNLOCK(NTOV(dat), 0);
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return (error);
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}
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/* Fill out vblock data */
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dat_entry = (struct nandfs_dat_entry *) req.bp_entry->b_data;
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dat_entry[entry].de_start = start;
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dat_entry[entry].de_end = UINTMAX_MAX;
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dat_entry[entry].de_blocknr = 0;
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/* Commit allocation */
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error = nandfs_alloc_entry(mdt, &req);
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if (error) {
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nandfs_error("%s: cannot get free vblk entry\n",
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__func__);
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if (!locked)
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VOP_UNLOCK(NTOV(dat), 0);
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return (error);
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}
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/* Return allocated vblock */
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*vblock = req.entrynum;
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DPRINTF(DAT, ("%s: allocated vblock %#jx\n",
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__func__, (uintmax_t)*vblock));
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if (!locked)
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VOP_UNLOCK(NTOV(dat), 0);
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return (error);
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}
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int
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nandfs_vblock_assign(struct nandfs_device *nandfsdev, nandfs_daddr_t vblock,
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nandfs_lbn_t block)
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{
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struct nandfs_node *dat;
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struct nandfs_mdt *mdt;
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struct nandfs_alloc_request req;
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struct nandfs_dat_entry *dat_entry;
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uint32_t entry;
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int locked, error;
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dat = nandfsdev->nd_dat_node;
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mdt = &nandfsdev->nd_dat_mdt;
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locked = NANDFS_VOP_ISLOCKED(NTOV(dat));
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if (!locked)
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VOP_LOCK(NTOV(dat), LK_EXCLUSIVE);
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req.entrynum = vblock;
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error = nandfs_get_entry_block(mdt, dat, &req, &entry, 0);
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if (!error) {
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dat_entry = (struct nandfs_dat_entry *) req.bp_entry->b_data;
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dat_entry[entry].de_blocknr = block;
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DPRINTF(DAT, ("%s: assing vblock %jx->%jx\n",
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__func__, (uintmax_t)vblock, (uintmax_t)block));
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/*
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* It is mostly called from syncer() so
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* we want to force making buf dirty
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*/
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error = nandfs_dirty_buf(req.bp_entry, 1);
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}
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if (!locked)
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VOP_UNLOCK(NTOV(dat), 0);
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return (error);
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}
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int
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nandfs_vblock_end(struct nandfs_device *nandfsdev, nandfs_daddr_t vblock)
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{
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struct nandfs_node *dat;
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struct nandfs_mdt *mdt;
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struct nandfs_alloc_request req;
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struct nandfs_dat_entry *dat_entry;
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uint64_t end;
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uint32_t entry;
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int locked, error;
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dat = nandfsdev->nd_dat_node;
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mdt = &nandfsdev->nd_dat_mdt;
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end = nandfsdev->nd_last_cno;
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locked = NANDFS_VOP_ISLOCKED(NTOV(dat));
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if (!locked)
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VOP_LOCK(NTOV(dat), LK_EXCLUSIVE);
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req.entrynum = vblock;
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error = nandfs_get_entry_block(mdt, dat, &req, &entry, 0);
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if (!error) {
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dat_entry = (struct nandfs_dat_entry *) req.bp_entry->b_data;
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dat_entry[entry].de_end = end;
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DPRINTF(DAT, ("%s: end vblock %#jx at checkpoint %#jx\n",
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__func__, (uintmax_t)vblock, (uintmax_t)end));
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/*
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* It is mostly called from syncer() so
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* we want to force making buf dirty
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*/
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error = nandfs_dirty_buf(req.bp_entry, 1);
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}
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if (!locked)
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VOP_UNLOCK(NTOV(dat), 0);
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return (error);
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}
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int
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nandfs_vblock_free(struct nandfs_device *nandfsdev, nandfs_daddr_t vblock)
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{
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struct nandfs_node *dat;
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struct nandfs_mdt *mdt;
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struct nandfs_alloc_request req;
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int error;
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dat = nandfsdev->nd_dat_node;
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mdt = &nandfsdev->nd_dat_mdt;
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VOP_LOCK(NTOV(dat), LK_EXCLUSIVE);
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req.entrynum = vblock;
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error = nandfs_find_entry(mdt, dat, &req);
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if (!error) {
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DPRINTF(DAT, ("%s: vblk %#jx\n", __func__, (uintmax_t)vblock));
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nandfs_free_entry(mdt, &req);
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}
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VOP_UNLOCK(NTOV(dat), 0);
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return (error);
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}
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int
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nandfs_get_dat_vinfo_ioctl(struct nandfs_device *nandfsdev, struct nandfs_argv *nargv)
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{
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struct nandfs_vinfo *vinfo;
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size_t size;
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int error;
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if (nargv->nv_nmembs > NANDFS_VINFO_MAX)
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return (EINVAL);
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size = sizeof(struct nandfs_vinfo) * nargv->nv_nmembs;
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vinfo = malloc(size, M_NANDFSTEMP, M_WAITOK|M_ZERO);
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error = copyin((void *)(uintptr_t)nargv->nv_base, vinfo, size);
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if (error) {
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free(vinfo, M_NANDFSTEMP);
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return (error);
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}
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error = nandfs_get_dat_vinfo(nandfsdev, vinfo, nargv->nv_nmembs);
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if (error == 0)
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error = copyout(vinfo, (void *)(uintptr_t)nargv->nv_base, size);
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free(vinfo, M_NANDFSTEMP);
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return (error);
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}
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int
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nandfs_get_dat_vinfo(struct nandfs_device *nandfsdev, struct nandfs_vinfo *vinfo,
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uint32_t nmembs)
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{
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struct nandfs_node *dat;
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struct nandfs_mdt *mdt;
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struct nandfs_alloc_request req;
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struct nandfs_dat_entry *dat_entry;
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uint32_t i, idx;
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int error = 0;
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dat = nandfsdev->nd_dat_node;
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mdt = &nandfsdev->nd_dat_mdt;
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DPRINTF(DAT, ("%s: nmembs %#x\n", __func__, nmembs));
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VOP_LOCK(NTOV(dat), LK_EXCLUSIVE);
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for (i = 0; i < nmembs; i++) {
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req.entrynum = vinfo[i].nvi_vblocknr;
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error = nandfs_get_entry_block(mdt, dat,&req, &idx, 0);
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if (error)
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break;
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dat_entry = ((struct nandfs_dat_entry *) req.bp_entry->b_data);
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vinfo[i].nvi_start = dat_entry[idx].de_start;
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vinfo[i].nvi_end = dat_entry[idx].de_end;
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vinfo[i].nvi_blocknr = dat_entry[idx].de_blocknr;
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DPRINTF(DAT, ("%s: vinfo: %jx[%jx-%jx]->%jx\n",
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__func__, vinfo[i].nvi_vblocknr, vinfo[i].nvi_start,
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vinfo[i].nvi_end, vinfo[i].nvi_blocknr));
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brelse(req.bp_entry);
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}
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VOP_UNLOCK(NTOV(dat), 0);
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return (error);
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}
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int
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nandfs_get_dat_bdescs_ioctl(struct nandfs_device *nffsdev,
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struct nandfs_argv *nargv)
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{
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struct nandfs_bdesc *bd;
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size_t size;
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int error;
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size = nargv->nv_nmembs * sizeof(struct nandfs_bdesc);
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bd = malloc(size, M_NANDFSTEMP, M_WAITOK);
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error = copyin((void *)(uintptr_t)nargv->nv_base, bd, size);
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if (error) {
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free(bd, M_NANDFSTEMP);
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return (error);
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}
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error = nandfs_get_dat_bdescs(nffsdev, bd, nargv->nv_nmembs);
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if (error == 0)
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error = copyout(bd, (void *)(uintptr_t)nargv->nv_base, size);
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free(bd, M_NANDFSTEMP);
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return (error);
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}
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int
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nandfs_get_dat_bdescs(struct nandfs_device *nffsdev, struct nandfs_bdesc *bd,
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uint32_t nmembs)
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{
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struct nandfs_node *dat_node;
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uint64_t map;
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uint32_t i;
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int error = 0;
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dat_node = nffsdev->nd_dat_node;
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VOP_LOCK(NTOV(dat_node), LK_EXCLUSIVE);
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for (i = 0; i < nmembs; i++) {
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DPRINTF(CLEAN,
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("%s: bd ino:%#jx oblk:%#jx blocknr:%#jx off:%#jx\n",
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__func__, (uintmax_t)bd[i].bd_ino,
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(uintmax_t)bd[i].bd_oblocknr, (uintmax_t)bd[i].bd_blocknr,
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(uintmax_t)bd[i].bd_offset));
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error = nandfs_bmap_lookup(dat_node, bd[i].bd_offset, &map);
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if (error)
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break;
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bd[i].bd_blocknr = map;
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}
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VOP_UNLOCK(NTOV(dat_node), 0);
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return (error);
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}
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