394 lines
12 KiB
C
394 lines
12 KiB
C
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/*
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* Copyright (c) 2007-2009 Google Inc. and Amit Singh
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* 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 are
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* met:
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*
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* * 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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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Copyright (C) 2005 Csaba Henk.
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* 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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL 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
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* OR 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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* $FreeBSD$
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*/
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#ifndef _FUSE_INTERNAL_H_
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#define _FUSE_INTERNAL_H_
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <sys/stat.h>
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#include <sys/vnode.h>
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#include "fuse_ipc.h"
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#include "fuse_node.h"
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static __inline int
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vfs_isrdonly(struct mount *mp)
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{
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return ((mp->mnt_flag & MNT_RDONLY) != 0 ? 1 : 0);
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}
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static __inline struct mount *
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vnode_mount(struct vnode *vp)
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{
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return (vp->v_mount);
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}
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static __inline int
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vnode_mountedhere(struct vnode *vp)
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{
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return (vp->v_mountedhere != NULL ? 1 : 0);
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}
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static __inline enum vtype
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vnode_vtype(struct vnode *vp)
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{
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return (vp->v_type);
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}
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static __inline int
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vnode_isvroot(struct vnode *vp)
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{
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return ((vp->v_vflag & VV_ROOT) != 0 ? 1 : 0);
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}
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static __inline int
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vnode_isreg(struct vnode *vp)
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{
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return (vp->v_type == VREG ? 1 : 0);
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}
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static __inline int
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vnode_isdir(struct vnode *vp)
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{
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return (vp->v_type == VDIR ? 1 : 0);
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}
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static __inline int
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vnode_islnk(struct vnode *vp)
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{
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return (vp->v_type == VLNK ? 1 : 0);
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}
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static __inline ssize_t
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uio_resid(struct uio *uio)
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{
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return (uio->uio_resid);
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}
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static __inline off_t
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uio_offset(struct uio *uio)
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{
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return (uio->uio_offset);
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}
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static __inline void
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uio_setoffset(struct uio *uio, off_t offset)
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{
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uio->uio_offset = offset;
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}
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static __inline void
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uio_setresid(struct uio *uio, ssize_t resid)
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{
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uio->uio_resid = resid;
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}
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/* time */
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#define fuse_timespec_add(vvp, uvp) \
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do { \
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(vvp)->tv_sec += (uvp)->tv_sec; \
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(vvp)->tv_nsec += (uvp)->tv_nsec; \
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if ((vvp)->tv_nsec >= 1000000000) { \
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(vvp)->tv_sec++; \
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(vvp)->tv_nsec -= 1000000000; \
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} \
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} while (0)
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#define fuse_timespec_cmp(tvp, uvp, cmp) \
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(((tvp)->tv_sec == (uvp)->tv_sec) ? \
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((tvp)->tv_nsec cmp (uvp)->tv_nsec) : \
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((tvp)->tv_sec cmp (uvp)->tv_sec))
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/* miscellaneous */
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static __inline__
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int
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fuse_isdeadfs(struct vnode *vp)
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{
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struct fuse_data *data = fuse_get_mpdata(vnode_mount(vp));
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return (data->dataflags & FSESS_DEAD);
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}
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static __inline__
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int
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fuse_iosize(struct vnode *vp)
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{
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return vp->v_mount->mnt_stat.f_iosize;
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}
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/* access */
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#define FVP_ACCESS_NOOP 0x01
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#define FACCESS_VA_VALID 0x01
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#define FACCESS_DO_ACCESS 0x02
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#define FACCESS_STICKY 0x04
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#define FACCESS_CHOWN 0x08
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#define FACCESS_NOCHECKSPY 0x10
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#define FACCESS_SETGID 0x12
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#define FACCESS_XQUERIES FACCESS_STICKY | FACCESS_CHOWN | FACCESS_SETGID
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struct fuse_access_param {
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uid_t xuid;
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gid_t xgid;
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uint32_t facc_flags;
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};
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static __inline int
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fuse_match_cred(struct ucred *basecred, struct ucred *usercred)
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{
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if (basecred->cr_uid == usercred->cr_uid &&
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basecred->cr_uid == usercred->cr_ruid &&
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basecred->cr_uid == usercred->cr_svuid &&
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basecred->cr_groups[0] == usercred->cr_groups[0] &&
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basecred->cr_groups[0] == usercred->cr_rgid &&
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basecred->cr_groups[0] == usercred->cr_svgid)
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return 0;
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return EPERM;
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}
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int
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fuse_internal_access(struct vnode *vp,
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mode_t mode,
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struct fuse_access_param *facp,
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struct thread *td,
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struct ucred *cred);
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/* attributes */
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static __inline
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void
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fuse_internal_attr_fat2vat(struct mount *mp,
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struct fuse_attr *fat,
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struct vattr *vap)
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{
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DEBUGX(FUSE_DEBUG_INTERNAL,
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"node #%ju, mode 0%o\n", (uintmax_t)fat->ino, fat->mode);
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vattr_null(vap);
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vap->va_fsid = mp->mnt_stat.f_fsid.val[0];
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vap->va_fileid = fat->ino; /* XXX cast from 64 bits to 32 */
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vap->va_mode = fat->mode & ~S_IFMT;
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vap->va_nlink = fat->nlink;
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vap->va_uid = fat->uid;
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vap->va_gid = fat->gid;
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vap->va_rdev = fat->rdev;
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vap->va_size = fat->size;
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vap->va_atime.tv_sec = fat->atime; /* XXX on some platforms cast from 64 bits to 32 */
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vap->va_atime.tv_nsec = fat->atimensec;
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vap->va_mtime.tv_sec = fat->mtime;
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vap->va_mtime.tv_nsec = fat->mtimensec;
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vap->va_ctime.tv_sec = fat->ctime;
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vap->va_ctime.tv_nsec = fat->ctimensec;
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vap->va_blocksize = PAGE_SIZE;
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vap->va_type = IFTOVT(fat->mode);
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#if (S_BLKSIZE == 512)
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/* Optimize this case */
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vap->va_bytes = fat->blocks << 9;
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#else
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vap->va_bytes = fat->blocks * S_BLKSIZE;
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#endif
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vap->va_flags = 0;
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}
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#define cache_attrs(vp, fuse_out) do { \
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struct timespec uptsp_ ## __func__; \
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\
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VTOFUD(vp)->cached_attrs_valid.tv_sec = (fuse_out)->attr_valid; \
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VTOFUD(vp)->cached_attrs_valid.tv_nsec = (fuse_out)->attr_valid_nsec; \
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nanouptime(&uptsp_ ## __func__); \
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\
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fuse_timespec_add(&VTOFUD(vp)->cached_attrs_valid, &uptsp_ ## __func__); \
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\
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fuse_internal_attr_fat2vat(vnode_mount(vp), &(fuse_out)->attr, VTOVA(vp)); \
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} while (0)
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/* fsync */
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int
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fuse_internal_fsync(struct vnode *vp,
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struct thread *td,
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struct ucred *cred,
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struct fuse_filehandle *fufh);
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int
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fuse_internal_fsync_callback(struct fuse_ticket *tick, struct uio *uio);
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/* readdir */
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struct pseudo_dirent {
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uint32_t d_namlen;
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};
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int
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fuse_internal_readdir(struct vnode *vp,
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struct uio *uio,
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struct fuse_filehandle *fufh,
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struct fuse_iov *cookediov);
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int
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fuse_internal_readdir_processdata(struct uio *uio,
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size_t reqsize,
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void *buf,
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size_t bufsize,
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void *param);
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/* remove */
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int
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fuse_internal_remove(struct vnode *dvp,
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struct vnode *vp,
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struct componentname *cnp,
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enum fuse_opcode op);
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/* rename */
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int
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fuse_internal_rename(struct vnode *fdvp,
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struct componentname *fcnp,
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struct vnode *tdvp,
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struct componentname *tcnp);
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/* revoke */
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void
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fuse_internal_vnode_disappear(struct vnode *vp);
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/* strategy */
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/* entity creation */
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static __inline
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int
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fuse_internal_checkentry(struct fuse_entry_out *feo, enum vtype vtyp)
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{
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DEBUGX(FUSE_DEBUG_INTERNAL,
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"feo=%p, vtype=%d\n", feo, vtyp);
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if (vtyp != IFTOVT(feo->attr.mode)) {
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DEBUGX(FUSE_DEBUG_INTERNAL,
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"EINVAL -- %x != %x\n", vtyp, IFTOVT(feo->attr.mode));
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return EINVAL;
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}
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if (feo->nodeid == FUSE_NULL_ID) {
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DEBUGX(FUSE_DEBUG_INTERNAL,
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"EINVAL -- feo->nodeid is NULL\n");
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return EINVAL;
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}
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if (feo->nodeid == FUSE_ROOT_ID) {
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DEBUGX(FUSE_DEBUG_INTERNAL,
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"EINVAL -- feo->nodeid is FUSE_ROOT_ID\n");
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return EINVAL;
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}
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return 0;
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}
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int
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fuse_internal_newentry(struct vnode *dvp,
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struct vnode **vpp,
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struct componentname *cnp,
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enum fuse_opcode op,
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void *buf,
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size_t bufsize,
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enum vtype vtyp);
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void
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fuse_internal_newentry_makerequest(struct mount *mp,
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uint64_t dnid,
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struct componentname *cnp,
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enum fuse_opcode op,
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void *buf,
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size_t bufsize,
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struct fuse_dispatcher *fdip);
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int
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fuse_internal_newentry_core(struct vnode *dvp,
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struct vnode **vpp,
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struct componentname *cnp,
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enum vtype vtyp,
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struct fuse_dispatcher *fdip);
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/* entity destruction */
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int
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fuse_internal_forget_callback(struct fuse_ticket *tick, struct uio *uio);
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void
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fuse_internal_forget_send(struct mount *mp,
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|
|
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_ */
|