int
fuse_filehandle_open(struct vnode *vp,
fufh_type_t fufh_type,
struct fuse_filehandle **fufhp,
struct thread *td,
struct ucred *cred)
{
struct fuse_dispatcher fdi;
struct fuse_open_in *foi;
struct fuse_open_out *foo;
int err = 0;
int isdir = 0;
int oflags = 0;
int op = FUSE_OPEN;
fuse_trace_printf("fuse_filehandle_open(vp=%p, fufh_type=%d)\n",
vp, fufh_type);
if (fuse_filehandle_valid(vp, fufh_type)) {
panic("FUSE: filehandle_open called despite valid fufh (type=%d)",
fufh_type);
/* NOTREACHED */
}
/*
* Note that this means we are effectively FILTERING OUT open() flags.
*/
oflags = fuse_filehandle_xlate_to_oflags(fufh_type);
if (vnode_isdir(vp)) {
isdir = 1;
op = FUSE_OPENDIR;
if (fufh_type != FUFH_RDONLY) {
printf("FUSE:non-rdonly fh requested for a directory?\n");
fufh_type = FUFH_RDONLY;
}
}
fdisp_init(&fdi, sizeof(*foi));
fdisp_make_vp(&fdi, op, vp, td, cred);
foi = fdi.indata;
foi->flags = oflags;
if ((err = fdisp_wait_answ(&fdi))) {
debug_printf("OUCH ... daemon didn't give fh (err = %d)\n", err);
if (err == ENOENT) {
fuse_internal_vnode_disappear(vp);
}
goto out;
}
foo = fdi.answ;
fuse_filehandle_init(vp, fufh_type, fufhp, foo->fh);
fuse_vnode_open(vp, foo->open_flags, td);
out:
fdisp_destroy(&fdi);
return err;
}
/*
struct vnop_close_args {
struct vnode *a_vp;
int a_fflag;
struct ucred *a_cred;
struct thread *a_td;
};
*/
static int
fuse_vnop_close(struct vop_close_args *ap)
{
struct vnode *vp = ap->a_vp;
struct ucred *cred = ap->a_cred;
int fflag = ap->a_fflag;
fufh_type_t fufh_type;
fuse_trace_printf_vnop();
if (fuse_isdeadfs(vp)) {
return 0;
}
if (vnode_isdir(vp)) {
if (fuse_filehandle_valid(vp, FUFH_RDONLY)) {
fuse_filehandle_close(vp, FUFH_RDONLY, NULL, cred);
}
return 0;
}
if (fflag & IO_NDELAY) {
return 0;
}
fufh_type = fuse_filehandle_xlate_from_fflags(fflag);
if (!fuse_filehandle_valid(vp, fufh_type)) {
int i;
for (i = 0; i < FUFH_MAXTYPE; i++)
if (fuse_filehandle_valid(vp, i))
break;
if (i == FUFH_MAXTYPE)
panic("FUSE: fufh type %d found to be invalid in close"
" (fflag=0x%x)\n",
fufh_type, fflag);
}
if ((VTOFUD(vp)->flag & FN_SIZECHANGE) != 0) {
fuse_vnode_savesize(vp, cred);
}
return 0;
}
/*
struct vnop_readdir_args {
struct vnode *a_vp;
struct uio *a_uio;
struct ucred *a_cred;
int *a_eofflag;
int *ncookies;
u_long **a_cookies;
};
*/
static int
fuse_vnop_readdir(struct vop_readdir_args *ap)
{
struct vnode *vp = ap->a_vp;
struct uio *uio = ap->a_uio;
struct ucred *cred = ap->a_cred;
struct fuse_filehandle *fufh = NULL;
struct fuse_vnode_data *fvdat;
struct fuse_iov cookediov;
int err = 0;
int freefufh = 0;
FS_DEBUG2G("inode=%ju\n", (uintmax_t)VTOI(vp));
if (fuse_isdeadfs(vp)) {
return ENXIO;
}
if ( /* XXXIP ((uio_iovcnt(uio) > 1)) || */
(uio_resid(uio) < sizeof(struct dirent))) {
return EINVAL;
}
fvdat = VTOFUD(vp);
if (!fuse_filehandle_valid(vp, FUFH_RDONLY)) {
FS_DEBUG("calling readdir() before open()");
err = fuse_filehandle_open(vp, FUFH_RDONLY, &fufh, NULL, cred);
freefufh = 1;
} else {
err = fuse_filehandle_get(vp, FUFH_RDONLY, &fufh);
}
if (err) {
return (err);
}
#define DIRCOOKEDSIZE FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + MAXNAMLEN + 1)
fiov_init(&cookediov, DIRCOOKEDSIZE);
err = fuse_internal_readdir(vp, uio, fufh, &cookediov);
fiov_teardown(&cookediov);
if (freefufh) {
fuse_filehandle_close(vp, FUFH_RDONLY, NULL, cred);
}
return err;
}
/*
struct vnop_open_args {
struct vnode *a_vp;
int a_mode;
struct ucred *a_cred;
struct thread *a_td;
int a_fdidx; / struct file *a_fp;
};
*/
static int
fuse_vnop_open(struct vop_open_args *ap)
{
struct vnode *vp = ap->a_vp;
int mode = ap->a_mode;
struct thread *td = ap->a_td;
struct ucred *cred = ap->a_cred;
fufh_type_t fufh_type;
struct fuse_vnode_data *fvdat;
int error, isdir = 0;
FS_DEBUG2G("inode=%ju mode=0x%x\n", (uintmax_t)VTOI(vp), mode);
if (fuse_isdeadfs(vp)) {
return ENXIO;
}
fvdat = VTOFUD(vp);
if (vnode_isdir(vp)) {
isdir = 1;
}
if (isdir) {
fufh_type = FUFH_RDONLY;
} else {
fufh_type = fuse_filehandle_xlate_from_fflags(mode);
}
if (fuse_filehandle_valid(vp, fufh_type)) {
fuse_vnode_open(vp, 0, td);
return 0;
}
error = fuse_filehandle_open(vp, fufh_type, NULL, td, cred);
return error;
}