/*
struct vnop_fsync_args {
struct vnodeop_desc *a_desc;
struct vnode * a_vp;
struct ucred * a_cred;
int a_waitfor;
struct thread * a_td;
};
*/
static int
fuse_vnop_fsync(struct vop_fsync_args *ap)
{
struct vnode *vp = ap->a_vp;
struct thread *td = ap->a_td;
struct fuse_filehandle *fufh;
struct fuse_vnode_data *fvdat = VTOFUD(vp);
int type, err = 0;
fuse_trace_printf_vnop();
if (fuse_isdeadfs(vp)) {
return 0;
}
if ((err = vop_stdfsync(ap)))
return err;
if (!fsess_isimpl(vnode_mount(vp),
(vnode_vtype(vp) == VDIR ? FUSE_FSYNCDIR : FUSE_FSYNC))) {
goto out;
}
for (type = 0; type < FUFH_MAXTYPE; type++) {
fufh = &(fvdat->fufh[type]);
if (FUFH_IS_VALID(fufh)) {
fuse_internal_fsync(vp, td, NULL, fufh);
}
}
out:
return 0;
}
/*
struct vnop_create_args {
struct vnode *a_dvp;
struct vnode **a_vpp;
struct componentname *a_cnp;
struct vattr *a_vap;
};
*/
static int
fuse_vnop_create(struct vop_create_args *ap)
{
struct vnode *dvp = ap->a_dvp;
struct vnode **vpp = ap->a_vpp;
struct componentname *cnp = ap->a_cnp;
struct vattr *vap = ap->a_vap;
struct thread *td = cnp->cn_thread;
struct ucred *cred = cnp->cn_cred;
struct fuse_open_in *foi;
struct fuse_entry_out *feo;
struct fuse_dispatcher fdi;
struct fuse_dispatcher *fdip = &fdi;
int err;
struct mount *mp = vnode_mount(dvp);
uint64_t parentnid = VTOFUD(dvp)->nid;
mode_t mode = MAKEIMODE(vap->va_type, vap->va_mode);
uint64_t x_fh_id;
uint32_t x_open_flags;
fuse_trace_printf_vnop();
if (fuse_isdeadfs(dvp)) {
return ENXIO;
}
bzero(&fdi, sizeof(fdi));
/* XXX: Will we ever want devices ? */
if ((vap->va_type != VREG)) {
MPASS(vap->va_type != VFIFO);
goto bringup;
}
debug_printf("parent nid = %ju, mode = %x\n", (uintmax_t)parentnid,
mode);
fdisp_init(fdip, sizeof(*foi) + cnp->cn_namelen + 1);
if (!fsess_isimpl(mp, FUSE_CREATE)) {
debug_printf("eh, daemon doesn't implement create?\n");
return (EINVAL);
}
fdisp_make(fdip, FUSE_CREATE, vnode_mount(dvp), parentnid, td, cred);
foi = fdip->indata;
foi->mode = mode;
foi->flags = O_CREAT | O_RDWR;
memcpy((char *)fdip->indata + sizeof(*foi), cnp->cn_nameptr,
cnp->cn_namelen);
((char *)fdip->indata)[sizeof(*foi) + cnp->cn_namelen] = '\0';
err = fdisp_wait_answ(fdip);
if (err) {
if (err == ENOSYS)
fsess_set_notimpl(mp, FUSE_CREATE);
debug_printf("create: got err=%d from daemon\n", err);
goto out;
}
bringup:
feo = fdip->answ;
if ((err = fuse_internal_checkentry(feo, VREG))) {
goto out;
}
err = fuse_vnode_get(mp, feo->nodeid, dvp, vpp, cnp, VREG);
if (err) {
struct fuse_release_in *fri;
uint64_t nodeid = feo->nodeid;
uint64_t fh_id = ((struct fuse_open_out *)(feo + 1))->fh;
fdisp_init(fdip, sizeof(*fri));
fdisp_make(fdip, FUSE_RELEASE, mp, nodeid, td, cred);
fri = fdip->indata;
fri->fh = fh_id;
fri->flags = OFLAGS(mode);
fuse_insert_callback(fdip->tick, fuse_internal_forget_callback);
fuse_insert_message(fdip->tick);
return err;
}
ASSERT_VOP_ELOCKED(*vpp, "fuse_vnop_create");
fdip->answ = feo + 1;
x_fh_id = ((struct fuse_open_out *)(feo + 1))->fh;
x_open_flags = ((struct fuse_open_out *)(feo + 1))->open_flags;
fuse_filehandle_init(*vpp, FUFH_RDWR, NULL, x_fh_id);
fuse_vnode_open(*vpp, x_open_flags, td);
cache_purge_negative(dvp);
out:
fdisp_destroy(fdip);
return err;
}
int
fuse_internal_access(struct vnode *vp,
mode_t mode,
struct fuse_access_param *facp,
struct thread *td,
struct ucred *cred)
{
int err = 0;
uint32_t mask = 0;
int dataflags;
int vtype;
struct mount *mp;
struct fuse_dispatcher fdi;
struct fuse_access_in *fai;
struct fuse_data *data;
/* NOT YET DONE */
/*
* If this vnop gives you trouble, just return 0 here for a lazy
* kludge.
*/
/* return 0;*/
fuse_trace_printf_func();
mp = vnode_mount(vp);
vtype = vnode_vtype(vp);
data = fuse_get_mpdata(mp);
dataflags = data->dataflags;
if ((mode & VWRITE) && vfs_isrdonly(mp)) {
return EACCES;
}
/* Unless explicitly permitted, deny everyone except the fs owner. */
if (vnode_isvroot(vp) && !(facp->facc_flags & FACCESS_NOCHECKSPY)) {
if (!(dataflags & FSESS_DAEMON_CAN_SPY)) {
int denied = fuse_match_cred(data->daemoncred,
cred);
if (denied) {
return EPERM;
}
}
facp->facc_flags |= FACCESS_NOCHECKSPY;
}
if (!(facp->facc_flags & FACCESS_DO_ACCESS)) {
return 0;
}
if (((vtype == VREG) && (mode & VEXEC))) {
#ifdef NEED_MOUNT_ARGUMENT_FOR_THIS
/* Let the kernel handle this through open / close heuristics.*/
return ENOTSUP;
#else
/* Let the kernel handle this. */
return 0;
#endif
}
if (!fsess_isimpl(mp, FUSE_ACCESS)) {
/* Let the kernel handle this. */
return 0;
}
if (dataflags & FSESS_DEFAULT_PERMISSIONS) {
/* Let the kernel handle this. */
return 0;
}
if ((mode & VADMIN) != 0) {
err = priv_check_cred(cred, PRIV_VFS_ADMIN, 0);
if (err) {
return err;
}
}
if ((mode & (VWRITE | VAPPEND | VADMIN)) != 0) {
mask |= W_OK;
}
if ((mode & VREAD) != 0) {
mask |= R_OK;
}
if ((mode & VEXEC) != 0) {
mask |= X_OK;
}
bzero(&fdi, sizeof(fdi));
fdisp_init(&fdi, sizeof(*fai));
fdisp_make_vp(&fdi, FUSE_ACCESS, vp, td, cred);
fai = fdi.indata;
fai->mask = F_OK;
fai->mask |= mask;
err = fdisp_wait_answ(&fdi);
fdisp_destroy(&fdi);
if (err == ENOSYS) {
fsess_set_notimpl(mp, FUSE_ACCESS);
err = 0;
}
return err;
}
