minix/lib/libpuffs/pnode.c
David van Moolenbroek ba736c7968 libpuffs: clean up, unbreak
- move MINIX3-specific files into minix/lib/libpuffs;
- resynchronize the remaining files with NetBSD code;
- remove a few unnecessary changes;
- put remaining MINIX3-specific changes in __minix blocks;
- sort out the source files being linked at all.

The result is that libpuffs now successfully links against FUSE
file system programs again.  It can successfully mount, perform
some of the most basic operations, and unmount the file system.

Change-Id: Ieac220f7ad8c4d1fa293abda81967e8045be0bb4
2015-09-23 12:05:03 +00:00

216 lines
4.7 KiB
C

/* $NetBSD: pnode.c,v 1.13 2012/08/16 09:25:43 manu Exp $ */
/*
* Copyright (c) 2006 Antti Kantee. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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/cdefs.h>
#if !defined(lint)
__RCSID("$NetBSD: pnode.c,v 1.13 2012/08/16 09:25:43 manu Exp $");
#endif /* !lint */
#include <sys/types.h>
#include <assert.h>
#include <puffs.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "puffs_priv.h"
/*
* Well, you're probably wondering why this isn't optimized.
* The reason is simple: my available time is not optimized for
* size ... so please be patient ;)
*/
struct puffs_node *
puffs_pn_new(struct puffs_usermount *pu, void *privdata)
{
struct puffs_node *pn;
pn = calloc(1, sizeof(struct puffs_node));
if (pn == NULL)
return NULL;
pn->pn_data = privdata;
pn->pn_mnt = pu;
puffs_vattr_null(&pn->pn_va);
LIST_INSERT_HEAD(&pu->pu_pnodelst, pn, pn_entries);
pu->pu_flags |= PUFFS_FLAG_PNCOOKIE;
return pn;
}
void
puffs_pn_remove(struct puffs_node *pn)
{
LIST_REMOVE(pn, pn_entries);
pn->pn_flags |= PUFFS_NODE_REMOVED;
#ifdef __minix
if (pn->pn_count != 0) {
struct puffs_usermount *pu = pn->pn_mnt;
assert(pu != NULL);
/* XXX FS removes this pn from the list to prevent further
* lookups from finding node after remove/rm/rename op.
* But VFS still uses it, i.e. pnode is still open, and
* will put it later. Keep it in separate list to do reclaim
* in fs_put().
*/
LIST_INSERT_HEAD(&pu->pu_pnode_removed_lst, pn, pn_entries);
}
#endif /* __minix */
}
void
puffs_pn_put(struct puffs_node *pn)
{
struct puffs_usermount *pu = pn->pn_mnt;
pu->pu_pathfree(pu, &pn->pn_po);
if ((pn->pn_flags & PUFFS_NODE_REMOVED) == 0)
LIST_REMOVE(pn, pn_entries);
free(pn);
}
/* walk list, rv can be used either to halt or to return a value */
void *
puffs_pn_nodewalk(struct puffs_usermount *pu, puffs_nodewalk_fn fn, void *arg)
{
struct puffs_node *pn_cur, *pn_next;
void *rv;
pn_cur = LIST_FIRST(&pu->pu_pnodelst);
while (pn_cur) {
pn_next = LIST_NEXT(pn_cur, pn_entries);
rv = fn(pu, pn_cur, arg);
if (rv)
return rv;
pn_cur = pn_next;
}
return NULL;
}
struct vattr *
puffs_pn_getvap(struct puffs_node *pn)
{
return &pn->pn_va;
}
void *
puffs_pn_getpriv(struct puffs_node *pn)
{
return pn->pn_data;
}
void
puffs_pn_setpriv(struct puffs_node *pn, void *priv)
{
pn->pn_data = priv;
}
struct puffs_pathobj *
puffs_pn_getpo(struct puffs_node *pn)
{
return &pn->pn_po;
}
struct puffs_usermount *
puffs_pn_getmnt(struct puffs_node *pn)
{
return pn->pn_mnt;
}
/* convenience / shortcut */
void *
puffs_pn_getmntspecific(struct puffs_node *pn)
{
return pn->pn_mnt->pu_privdata;
}
/*
* newnode parameters
*/
void
puffs_newinfo_setcookie(struct puffs_newinfo *pni, puffs_cookie_t cookie)
{
*pni->pni_cookie = cookie;
}
void
puffs_newinfo_setvtype(struct puffs_newinfo *pni, enum vtype vt)
{
*pni->pni_vtype = vt;
}
void
puffs_newinfo_setsize(struct puffs_newinfo *pni, voff_t size)
{
*pni->pni_size = size;
}
void
puffs_newinfo_setrdev(struct puffs_newinfo *pni, dev_t rdev)
{
*pni->pni_rdev = rdev;
}
void
puffs_newinfo_setva(struct puffs_newinfo *pni, struct vattr *va)
{
(void)memcpy(pni->pni_va, va, sizeof(struct vattr));
}
void
puffs_newinfo_setvattl(struct puffs_newinfo *pni, struct timespec *va_ttl)
{
pni->pni_va_ttl->tv_sec = va_ttl->tv_sec;
pni->pni_va_ttl->tv_nsec = va_ttl->tv_nsec;
}
void
puffs_newinfo_setcnttl(struct puffs_newinfo *pni, struct timespec *cn_ttl)
{
pni->pni_cn_ttl->tv_sec = cn_ttl->tv_sec;
pni->pni_cn_ttl->tv_nsec = cn_ttl->tv_nsec;
}