/*
* Copyright (c) 2007-2009 Google Inc. and Amit Singh
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. 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.
*
* Copyright (C) 2005 Csaba Henk.
* 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 AUTHOR 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 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.
*
* $FreeBSD$
*/
#ifndef _FUSE_INTERNAL_H_
#define _FUSE_INTERNAL_H_
#include <sys/types.h>
#include <sys/uio.h>
#include <sys/stat.h>
#include <sys/vnode.h>
#include "fuse_ipc.h"
#include "fuse_node.h"
static __inline int
vfs_isrdonly(struct mount *mp)
{
return ((mp->mnt_flag & MNT_RDONLY) != 0 ? 1 : 0);
}
static __inline struct mount *
vnode_mount(struct vnode *vp)
{
return (vp->v_mount);
}
static __inline int
vnode_mountedhere(struct vnode *vp)
{
return (vp->v_mountedhere != NULL ? 1 : 0);
}
static __inline enum vtype
vnode_vtype(struct vnode *vp)
{
return (vp->v_type);
}
static __inline int
vnode_isvroot(struct vnode *vp)
{
return ((vp->v_vflag & VV_ROOT) != 0 ? 1 : 0);
}
static __inline int
vnode_isreg(struct vnode *vp)
{
return (vp->v_type == VREG ? 1 : 0);
}
static __inline int
vnode_isdir(struct vnode *vp)
{
return (vp->v_type == VDIR ? 1 : 0);
}
static __inline int
vnode_islnk(struct vnode *vp)
{
return (vp->v_type == VLNK ? 1 : 0);
}
static __inline ssize_t
uio_resid(struct uio *uio)
{
return (uio->uio_resid);
}
static __inline off_t
uio_offset(struct uio *uio)
{
return (uio->uio_offset);
}
static __inline void
uio_setoffset(struct uio *uio, off_t offset)
{
uio->uio_offset = offset;
}
static __inline void
uio_setresid(struct uio *uio, ssize_t resid)
{
uio->uio_resid = resid;
}
/* miscellaneous */
static __inline__
int
fuse_isdeadfs(struct vnode *vp)
{
struct fuse_data *data = fuse_get_mpdata(vnode_mount(vp));
return (data->dataflags & FSESS_DEAD);
}
static __inline__
int
fuse_iosize(struct vnode *vp)
{
return vp->v_mount->mnt_stat.f_iosize;
}
/* access */
#define FVP_ACCESS_NOOP 0x01
#define FACCESS_VA_VALID 0x01
#define FACCESS_DO_ACCESS 0x02
#define FACCESS_STICKY 0x04
#define FACCESS_CHOWN 0x08
#define FACCESS_NOCHECKSPY 0x10
#define FACCESS_SETGID 0x12
#define FACCESS_XQUERIES FACCESS_STICKY | FACCESS_CHOWN | FACCESS_SETGID
struct fuse_access_param {
uid_t xuid;
gid_t xgid;
uint32_t facc_flags;
};
static __inline int
fuse_match_cred(struct ucred *basecred, struct ucred *usercred)
{
if (basecred->cr_uid == usercred->cr_uid &&
basecred->cr_uid == usercred->cr_ruid &&
basecred->cr_uid == usercred->cr_svuid &&
basecred->cr_groups[0] == usercred->cr_groups[0] &&
basecred->cr_groups[0] == usercred->cr_rgid &&
basecred->cr_groups[0] == usercred->cr_svgid)
return 0;
return EPERM;
}
int
fuse_internal_access(struct vnode *vp,
mode_t mode,
struct fuse_access_param *facp,
struct thread *td,
struct ucred *cred);
/* attributes */
static __inline
void
fuse_internal_attr_fat2vat(struct mount *mp,
struct fuse_attr *fat,
struct vattr *vap)
{
DEBUGX(FUSE_DEBUG_INTERNAL,
"node #%ju, mode 0%o\n", (uintmax_t)fat->ino, fat->mode);
vattr_null(vap);
vap->va_fsid = mp->mnt_stat.f_fsid.val[0];
vap->va_fileid = fat->ino; /* XXX cast from 64 bits to 32 */
vap->va_mode = fat->mode & ~S_IFMT;
vap->va_nlink = fat->nlink;
vap->va_uid = fat->uid;
vap->va_gid = fat->gid;
vap->va_rdev = fat->rdev;
vap->va_size = fat->size;
vap->va_atime.tv_sec = fat->atime; /* XXX on some platforms cast from 64 bits to 32 */
vap->va_atime.tv_nsec = fat->atimensec;
vap->va_mtime.tv_sec = fat->mtime;
vap->va_mtime.tv_nsec = fat->mtimensec;
vap->va_ctime.tv_sec = fat->ctime;
vap->va_ctime.tv_nsec = fat->ctimensec;
vap->va_blocksize = PAGE_SIZE;
vap->va_type = IFTOVT(fat->mode);
#if (S_BLKSIZE == 512)
/* Optimize this case */
vap->va_bytes = fat->blocks << 9;
#else
vap->va_bytes = fat->blocks * S_BLKSIZE;
#endif
vap->va_flags = 0;
}
#define cache_attrs(vp, fuse_out) \
fuse_internal_attr_fat2vat(vnode_mount(vp), &(fuse_out)->attr, \
VTOVA(vp));
/* fsync */
int
fuse_internal_fsync(struct vnode *vp,
struct thread *td,
struct ucred *cred,
struct fuse_filehandle *fufh);
int
fuse_internal_fsync_callback(struct fuse_ticket *tick, struct uio *uio);
/* readdir */
struct pseudo_dirent {
uint32_t d_namlen;
};
int
fuse_internal_readdir(struct vnode *vp,
struct uio *uio,
struct fuse_filehandle *fufh,
struct fuse_iov *cookediov);
int
fuse_internal_readdir_processdata(struct uio *uio,
size_t reqsize,
void *buf,
size_t bufsize,
void *param);
/* remove */
int
fuse_internal_remove(struct vnode *dvp,
struct vnode *vp,
struct componentname *cnp,
enum fuse_opcode op);
/* rename */
int
fuse_internal_rename(struct vnode *fdvp,
struct componentname *fcnp,
struct vnode *tdvp,
struct componentname *tcnp);
/* revoke */
void
fuse_internal_vnode_disappear(struct vnode *vp);
/* strategy */
/* entity creation */
static __inline
int
fuse_internal_checkentry(struct fuse_entry_out *feo, enum vtype vtyp)
{
DEBUGX(FUSE_DEBUG_INTERNAL,
"feo=%p, vtype=%d\n", feo, vtyp);
if (vtyp != IFTOVT(feo->attr.mode)) {
DEBUGX(FUSE_DEBUG_INTERNAL,
"EINVAL -- %x != %x\n", vtyp, IFTOVT(feo->attr.mode));
return EINVAL;
}
if (feo->nodeid == FUSE_NULL_ID) {
DEBUGX(FUSE_DEBUG_INTERNAL,
"EINVAL -- feo->nodeid is NULL\n");
return EINVAL;
}
if (feo->nodeid == FUSE_ROOT_ID) {
DEBUGX(FUSE_DEBUG_INTERNAL,
"EINVAL -- feo->nodeid is FUSE_ROOT_ID\n");
return EINVAL;
}
return 0;
}
int
fuse_internal_newentry(struct vnode *dvp,
struct vnode **vpp,
struct componentname *cnp,
enum fuse_opcode op,
void *buf,
size_t bufsize,
enum vtype vtyp);
void
fuse_internal_newentry_makerequest(struct mount *mp,
uint64_t dnid,
struct componentname *cnp,
enum fuse_opcode op,
void *buf,
size_t bufsize,
struct fuse_dispatcher *fdip);
int
fuse_internal_newentry_core(struct vnode *dvp,
struct vnode **vpp,
struct componentname *cnp,
enum vtype vtyp,
struct fuse_dispatcher *fdip);
/* entity destruction */
int
fuse_internal_forget_callback(struct fuse_ticket *tick, struct uio *uio);
void
fuse_internal_forget_send(struct mount *mp,
struct thread *td,
struct ucred *cred,
uint64_t nodeid,
uint64_t nlookup);
/* fuse start/stop */
int fuse_internal_init_callback(struct fuse_ticket *tick, struct uio *uio);
void fuse_internal_send_init(struct fuse_data *data, struct thread *td);
#endif /* _FUSE_INTERNAL_H_ */