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/*
* 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_FILE_H_
#define _FUSE_FILE_H_
#include <sys/types.h>
#include <sys/fcntl.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <sys/vnode.h>
typedef enum fufh_type {
FUFH_INVALID = -1,
FUFH_RDONLY = 0,
FUFH_WRONLY = 1,
FUFH_RDWR = 2,
FUFH_MAXTYPE = 3,
} fufh_type_t;
struct fuse_filehandle {
uint64_t fh_id;
fufh_type_t fh_type;
};
#define FUFH_IS_VALID(f) ((f)->fh_type != FUFH_INVALID)
static __inline__
fufh_type_t
fuse_filehandle_xlate_from_mmap(int fflags)
{
if (fflags & (PROT_READ | PROT_WRITE)) {
return FUFH_RDWR;
} else if (fflags & (PROT_WRITE)) {
return FUFH_WRONLY;
} else if ((fflags & PROT_READ) || (fflags & PROT_EXEC)) {
return FUFH_RDONLY;
} else {
return FUFH_INVALID;
}
}
static __inline__
fufh_type_t
fuse_filehandle_xlate_from_fflags(int fflags)
{
if ((fflags & FREAD) && (fflags & FWRITE)) {
return FUFH_RDWR;
} else if (fflags & (FWRITE)) {
return FUFH_WRONLY;
} else if (fflags & (FREAD)) {
return FUFH_RDONLY;
} else {
panic("FUSE: What kind of a flag is this (%x)?", fflags);
}
}
static __inline__
int
fuse_filehandle_xlate_to_oflags(fufh_type_t type)
{
int oflags = -1;
switch (type) {
case FUFH_RDONLY:
oflags = O_RDONLY;
break;
case FUFH_WRONLY:
oflags = O_WRONLY;
break;
case FUFH_RDWR:
oflags = O_RDWR;
break;
default:
break;
}
return oflags;
}
int fuse_filehandle_valid(struct vnode *vp, fufh_type_t fufh_type);
fufh_type_t fuse_filehandle_validrw(struct vnode *vp, fufh_type_t fufh_type);
int fuse_filehandle_get(struct vnode *vp, fufh_type_t fufh_type,
struct fuse_filehandle **fufhp);
int fuse_filehandle_getrw(struct vnode *vp, fufh_type_t fufh_type,
struct fuse_filehandle **fufhp);
void fuse_filehandle_init(struct vnode *vp, fufh_type_t fufh_type,
struct fuse_filehandle **fufhp, uint64_t fh_id);
int fuse_filehandle_open(struct vnode *vp, fufh_type_t fufh_type,
struct fuse_filehandle **fufhp, struct thread *td,
struct ucred *cred);
int fuse_filehandle_close(struct vnode *vp, fufh_type_t fufh_type,
struct thread *td, struct ucred *cred);
#endif /* _FUSE_FILE_H_ */
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