2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2007-2009 Google Inc. and Amit Singh
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
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14 * copyright notice, this list of conditions and the following disclaimer
15 * in the documentation and/or other materials provided with the
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19 * this software without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 * Copyright (C) 2005 Csaba Henk.
34 * All rights reserved.
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
45 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
46 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
47 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
48 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
63 #include <sys/types.h>
64 #include <sys/fcntl.h>
67 #include <sys/vnode.h>
69 typedef enum fufh_type {
76 _Static_assert(FUFH_RDONLY == O_RDONLY, "RDONLY");
77 _Static_assert(FUFH_WRONLY == O_WRONLY, "WRONLY");
78 _Static_assert(FUFH_RDWR == O_RDWR, "RDWR");
80 struct fuse_filehandle {
85 #define FUFH_IS_VALID(f) ((f)->fh_type != FUFH_INVALID)
87 static inline fufh_type_t
88 fuse_filehandle_xlate_from_mmap(int fflags)
90 if (fflags & (PROT_READ | PROT_WRITE))
92 else if (fflags & (PROT_WRITE))
94 else if ((fflags & PROT_READ) || (fflags & PROT_EXEC))
100 static inline fufh_type_t
101 fuse_filehandle_xlate_from_fflags(int fflags)
103 if ((fflags & FREAD) && (fflags & FWRITE))
105 else if (fflags & (FWRITE))
107 else if (fflags & (FREAD))
110 panic("FUSE: What kind of a flag is this (%x)?", fflags);
114 fuse_filehandle_xlate_to_oflags(fufh_type_t type)
131 int fuse_filehandle_valid(struct vnode *vp, fufh_type_t fufh_type);
132 fufh_type_t fuse_filehandle_validrw(struct vnode *vp, fufh_type_t fufh_type);
133 int fuse_filehandle_get(struct vnode *vp, fufh_type_t fufh_type,
134 struct fuse_filehandle **fufhp);
135 int fuse_filehandle_getrw(struct vnode *vp, fufh_type_t fufh_type,
136 struct fuse_filehandle **fufhp);
138 void fuse_filehandle_init(struct vnode *vp, fufh_type_t fufh_type,
139 struct fuse_filehandle **fufhp, uint64_t fh_id);
140 int fuse_filehandle_open(struct vnode *vp, fufh_type_t fufh_type,
141 struct fuse_filehandle **fufhp, struct thread *td,
143 int fuse_filehandle_close(struct vnode *vp, fufh_type_t fufh_type,
144 struct thread *td, struct ucred *cred);
146 #endif /* _FUSE_FILE_H_ */