490e0de548
Import libpuffs and our port of libpuffs. The port was done as part of GSoC 2011 FUSE project, done by Evgeniy Ivanov. The librefuse import did not require any porting efforts. Libpuffs has been modified to understand our VFS-FS protocol and translate between that and PUFFS. As an example that it works, fuse-ntfs-3g from pkgsrc can be compiled and used to mount ntfs partitions: mount -t ntfs-3g <device> <mountpoint> FUSE only works with the asynchronous version of VFS. See <docs/UPDATING> on how to run AVFS. This patch further includes some changes to mount(1) and mount(2) so it's possible to use file systems provided by pkgsrc (note: manual modifications to /etc/system.conf are still needed. There has been made an exception for fuse-ntfs-3g, so it already as an entry).
222 lines
5 KiB
C
222 lines
5 KiB
C
/* $NetBSD: pnode.c,v 1.10 2008/08/12 19:44:39 pooka Exp $ */
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/*
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* Copyright (c) 2006 Antti Kantee. 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 ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* 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 OR
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* 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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#if !defined(lint)
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__RCSID("$NetBSD: pnode.c,v 1.10 2008/08/12 19:44:39 pooka Exp $");
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#endif /* !lint */
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#include <sys/types.h>
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#include <assert.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "puffs.h"
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#include "puffs_priv.h"
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/*
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* Well, you're probably wondering why this isn't optimized.
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* The reason is simple: my available time is not optimized for
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* size ... so please be patient ;)
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*/
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struct puffs_node *
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puffs_pn_new(struct puffs_usermount *pu, void *privdata)
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{
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struct puffs_node *pn;
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pn = calloc(1, sizeof(struct puffs_node));
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if (pn == NULL)
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return NULL;
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pn->pn_data = privdata;
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pn->pn_mnt = pu;
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puffs_vattr_null(&pn->pn_va);
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LIST_INSERT_HEAD(&pu->pu_pnodelst, pn, pn_entries);
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return pn;
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}
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void
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puffs_pn_remove(struct puffs_node *pn)
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{
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struct puffs_usermount *pu = pn->pn_mnt;
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assert(pu != NULL);
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LIST_REMOVE(pn, pn_entries);
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pn->pn_flags |= PUFFS_NODE_REMOVED;
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if (pn->pn_count != 0) {
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/* XXX FS removes this pn from the list to prevent further
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* lookups from finding node after remove/rm/rename op.
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* But VFS still uses it, i.e. pnode is still open, and
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* will put it later. Keep it in separate list to do reclaim
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* in fs_put().
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*/
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LIST_INSERT_HEAD(&pu->pu_pnode_removed_lst, pn, pn_entries);
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}
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}
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void
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puffs_pn_put(struct puffs_node *pn)
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{
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struct puffs_usermount *pu = pn->pn_mnt;
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pu->pu_pathfree(pu, &pn->pn_po);
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/* Removes either from pu_pnodelst or pu_pnode_removed_lst */
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LIST_REMOVE(pn, pn_entries);
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free(pn);
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}
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/* walk list, rv can be used either to halt or to return a value
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* XXX (MINIX note): if fn is 0, then arg is ino_t and we search
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* node with ino_t. TODO: modify docs.
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*/
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void *
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puffs_pn_nodewalk(struct puffs_usermount *pu, puffs_nodewalk_fn fn, void *arg)
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{
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struct puffs_node *pn_cur, *pn_next;
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void *rv;
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pn_cur = LIST_FIRST(&pu->pu_pnodelst);
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while (pn_cur) {
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pn_next = LIST_NEXT(pn_cur, pn_entries);
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if (fn) {
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rv = fn(pu, pn_cur, arg);
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if (rv)
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return rv;
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} else {
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if (pn_cur->pn_va.va_fileid == *((ino_t*) arg))
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return pn_cur;
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}
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pn_cur = pn_next;
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}
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return NULL;
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}
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void*
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puffs_pn_nodeprint(struct puffs_usermount *pu, struct puffs_node *pn, void *arg)
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{
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/* If arg is specified, print only pnodes with inum (should be only one,
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* otherwise - all.
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*/
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if (arg != NULL) {
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ino_t inum = *(ino_t*)arg;
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if (pn->pn_va.va_fileid != inum) {
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return NULL;
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}
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}
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lpuffs_debug(" ino %ld used %d %s\n", pn->pn_va.va_fileid, pn->pn_count,
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pn->pn_po.po_path);
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/* If arg specified, it should be the only one pnode to be printed,
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* but we walk through the rest of list for debugging purposes.
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*/
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return NULL;
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}
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void
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puffs_pn_nodeprintall(struct puffs_usermount *pu)
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{
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puffs_pn_nodewalk(pu, puffs_pn_nodeprint, NULL);
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}
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struct vattr *
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puffs_pn_getvap(struct puffs_node *pn)
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{
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return &pn->pn_va;
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}
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void *
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puffs_pn_getpriv(struct puffs_node *pn)
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{
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return pn->pn_data;
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}
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void
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puffs_pn_setpriv(struct puffs_node *pn, void *priv)
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{
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pn->pn_data = priv;
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}
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struct puffs_pathobj *
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puffs_pn_getpo(struct puffs_node *pn)
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{
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return &pn->pn_po;
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}
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struct puffs_usermount *
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puffs_pn_getmnt(struct puffs_node *pn)
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{
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return pn->pn_mnt;
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}
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/* convenience / shortcut */
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void *
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puffs_pn_getmntspecific(struct puffs_node *pn)
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{
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return pn->pn_mnt->pu_privdata;
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}
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/*
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* newnode parameters
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*/
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void
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puffs_newinfo_setcookie(struct puffs_newinfo *pni, puffs_cookie_t cookie)
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{
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*pni->pni_cookie = cookie;
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}
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void
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puffs_newinfo_setvtype(struct puffs_newinfo *pni, enum vtype vt)
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{
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*pni->pni_vtype = vt;
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}
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void
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puffs_newinfo_setsize(struct puffs_newinfo *pni, voff_t size)
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{
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*pni->pni_size = size;
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}
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void
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puffs_newinfo_setrdev(struct puffs_newinfo *pni, dev_t rdev)
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{
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*pni->pni_rdev = rdev;
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}
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