__private_extern__
int
fuse_internal_remove(vnode_t dvp,
vnode_t vp,
struct componentname *cnp,
enum fuse_opcode op,
vfs_context_t context)
{
struct fuse_dispatcher fdi;
struct vnode_attr *vap = VTOVA(vp);
int need_invalidate = 0;
uint64_t target_nlink = 0;
mount_t mp = vnode_mount(vp);
int err = 0;
fdisp_init(&fdi, cnp->cn_namelen + 1);
fdisp_make_vp(&fdi, op, dvp, context);
memcpy(fdi.indata, cnp->cn_nameptr, cnp->cn_namelen);
((char *)fdi.indata)[cnp->cn_namelen] = '\0';
if ((vap->va_nlink > 1) && vnode_isreg(vp)) {
need_invalidate = 1;
target_nlink = vap->va_nlink;
}
if (!(err = fdisp_wait_answ(&fdi))) {
fuse_ticket_drop(fdi.tick);
}
fuse_invalidate_attr(dvp);
fuse_invalidate_attr(vp);
/*
* XXX: M_MACFUSE_INVALIDATE_CACHED_VATTRS_UPON_UNLINK
*
* Consider the case where vap->va_nlink > 1 for the entity being
* removed. In our world, other in-memory vnodes that share a link
* count each with this one may not know right way that this one just
* got deleted. We should let them know, say, through a vnode_iterate()
* here and a callback that does fuse_invalidate_attr(vp) on each
* relevant vnode.
*/
if (need_invalidate && !err) {
if (!vfs_busy(mp, LK_NOWAIT)) {
vnode_iterate(mp, 0, fuse_internal_remove_callback,
(void *)&target_nlink);
vfs_unbusy(mp);
} else {
IOLog("MacFUSE: skipping link count fixup upon remove\n");
}
}
return err;
}
int
fuse_internal_remove(struct vnode *dvp,
struct vnode *vp,
struct componentname *cnp,
enum fuse_opcode op)
{
struct fuse_dispatcher fdi;
struct vattr *vap = VTOVA(vp);
#if INVALIDATE_CACHED_VATTRS_UPON_UNLINK
int need_invalidate = 0;
uint64_t target_nlink = 0;
#endif
int err = 0;
debug_printf("dvp=%p, cnp=%p, op=%d\n", vp, cnp, op);
fdisp_init(&fdi, cnp->cn_namelen + 1);
fdisp_make_vp(&fdi, op, dvp, cnp->cn_thread, cnp->cn_cred);
memcpy(fdi.indata, cnp->cn_nameptr, cnp->cn_namelen);
((char *)fdi.indata)[cnp->cn_namelen] = '\0';
#if INVALIDATE_CACHED_VATTRS_UPON_UNLINK
if (vap->va_nlink > 1) {
need_invalidate = 1;
target_nlink = vap->va_nlink;
}
#endif
err = fdisp_wait_answ(&fdi);
fdisp_destroy(&fdi);
fuse_invalidate_attr(dvp);
fuse_invalidate_attr(vp);
#ifdef XXXIP
/*
* XXX: INVALIDATE_CACHED_VATTRS_UPON_UNLINK
*
* Consider the case where vap->va_nlink > 1 for the entity being
* removed. In our world, other in-memory vnodes that share a link
* count each with this one may not know right way that this one just
* got deleted. We should let them know, say, through a vnode_iterate()
* here and a callback that does fuse_invalidate_attr(vp) on each
* relevant vnode.
*/
if (need_invalidate && !err) {
vnode_iterate(vnode_mount(vp), 0, fuse_internal_remove_callback,
(void *)&target_nlink);
}
#endif
return err;
}
static int
fuse_internal_remove_callback(struct vnode *vp, void *cargs)
{
struct vattr *vap;
uint64_t target_nlink;
vap = VTOVA(vp);
target_nlink = *(uint64_t *)cargs;
/* somewhat lame "heuristics", but you got better ideas? */
if ((vap->va_nlink == target_nlink) && vnode_isreg(vp)) {
fuse_invalidate_attr(vp);
}
return 0;
}
/*
struct vnop_link_args {
struct vnode *a_tdvp;
struct vnode *a_vp;
struct componentname *a_cnp;
};
*/
static int
fuse_vnop_link(struct vop_link_args *ap)
{
struct vnode *vp = ap->a_vp;
struct vnode *tdvp = ap->a_tdvp;
struct componentname *cnp = ap->a_cnp;
struct vattr *vap = VTOVA(vp);
struct fuse_dispatcher fdi;
struct fuse_entry_out *feo;
struct fuse_link_in fli;
int err;
fuse_trace_printf_vnop();
if (fuse_isdeadfs(vp)) {
return ENXIO;
}
if (vnode_mount(tdvp) != vnode_mount(vp)) {
return EXDEV;
}
if (vap->va_nlink >= FUSE_LINK_MAX) {
return EMLINK;
}
fli.oldnodeid = VTOI(vp);
fdisp_init(&fdi, 0);
fuse_internal_newentry_makerequest(vnode_mount(tdvp), VTOI(tdvp), cnp,
FUSE_LINK, &fli, sizeof(fli), &fdi);
if ((err = fdisp_wait_answ(&fdi))) {
goto out;
}
feo = fdi.answ;
err = fuse_internal_checkentry(feo, vnode_vtype(vp));
fuse_invalidate_attr(tdvp);
fuse_invalidate_attr(vp);
out:
fdisp_destroy(&fdi);
return err;
}
int
fuse_internal_remove(struct vnode *dvp,
struct vnode *vp,
struct componentname *cnp,
enum fuse_opcode op)
{
struct fuse_dispatcher fdi;
struct vattr *vap = VTOVA(vp);
#if INVALIDATE_CACHED_VATTRS_UPON_UNLINK
int need_invalidate = 0;
uint64_t target_nlink = 0;
#endif
int err = 0;
debug_printf("dvp=%p, cnp=%p, op=%d\n", vp, cnp, op);
fdisp_init(&fdi, cnp->cn_namelen + 1);
fdisp_make_vp(&fdi, op, dvp, cnp->cn_thread, cnp->cn_cred);
memcpy(fdi.indata, cnp->cn_nameptr, cnp->cn_namelen);
((char *)fdi.indata)[cnp->cn_namelen] = '\0';
#if INVALIDATE_CACHED_VATTRS_UPON_UNLINK
if (vap->va_nlink > 1) {
need_invalidate = 1;
target_nlink = vap->va_nlink;
}
#endif
err = fdisp_wait_answ(&fdi);
fdisp_destroy(&fdi);
return err;
}
/*
struct vnop_getattr_args {
struct vnode *a_vp;
struct vattr *a_vap;
struct ucred *a_cred;
struct thread *a_td;
};
*/
static int
fuse_vnop_getattr(struct vop_getattr_args *ap)
{
struct vnode *vp = ap->a_vp;
struct vattr *vap = ap->a_vap;
struct ucred *cred = ap->a_cred;
struct thread *td = curthread;
struct fuse_vnode_data *fvdat = VTOFUD(vp);
int err = 0;
int dataflags;
struct fuse_dispatcher fdi;
FS_DEBUG2G("inode=%ju\n", (uintmax_t)VTOI(vp));
dataflags = fuse_get_mpdata(vnode_mount(vp))->dataflags;
/* Note that we are not bailing out on a dead file system just yet. */
if (!(dataflags & FSESS_INITED)) {
if (!vnode_isvroot(vp)) {
fdata_set_dead(fuse_get_mpdata(vnode_mount(vp)));
err = ENOTCONN;
debug_printf("fuse_getattr b: returning ENOTCONN\n");
return err;
} else {
goto fake;
}
}
fdisp_init(&fdi, 0);
if ((err = fdisp_simple_putget_vp(&fdi, FUSE_GETATTR, vp, td, cred))) {
if ((err == ENOTCONN) && vnode_isvroot(vp)) {
/* see comment at similar place in fuse_statfs() */
fdisp_destroy(&fdi);
goto fake;
}
if (err == ENOENT) {
fuse_internal_vnode_disappear(vp);
}
goto out;
}
cache_attrs(vp, (struct fuse_attr_out *)fdi.answ);
if (vap != VTOVA(vp)) {
memcpy(vap, VTOVA(vp), sizeof(*vap));
}
if (vap->va_type != vnode_vtype(vp)) {
fuse_internal_vnode_disappear(vp);
err = ENOENT;
goto out;
}
if ((fvdat->flag & FN_SIZECHANGE) != 0)
vap->va_size = fvdat->filesize;
if (vnode_isreg(vp) && (fvdat->flag & FN_SIZECHANGE) == 0) {
/*
* This is for those cases when the file size changed without us
* knowing, and we want to catch up.
*/
off_t new_filesize = ((struct fuse_attr_out *)
fdi.answ)->attr.size;
if (fvdat->filesize != new_filesize) {
fuse_vnode_setsize(vp, cred, new_filesize);
}
}
debug_printf("fuse_getattr e: returning 0\n");
out:
fdisp_destroy(&fdi);
return err;
fake:
bzero(vap, sizeof(*vap));
vap->va_type = vnode_vtype(vp);
return 0;
}
/* getattr sidekicks */
__private_extern__
int
fuse_internal_loadxtimes(vnode_t vp, struct vnode_attr *out_vap,
vfs_context_t context)
{
struct vnode_attr *in_vap = VTOVA(vp);
struct fuse_data *data = fuse_get_mpdata(vnode_mount(vp));
struct fuse_dispatcher fdi;
struct fuse_getxtimes_out *fgxo = NULL;
int isvroot = vnode_isvroot(vp);
struct timespec t = { 0, 0 };
const struct timespec kZeroTime = { 0, 0 };
int err = 0;
if (!(data->dataflags & FSESS_XTIMES)) {
/* We don't return anything. */
goto out;
}
if (VTOFUD(vp)->c_flag & C_XTIMES_VALID) {
VATTR_RETURN(out_vap, va_backup_time, in_vap->va_backup_time);
VATTR_RETURN(out_vap, va_create_time, in_vap->va_create_time);
goto out;
}
if (!fuse_implemented(data, FSESS_NOIMPLBIT(GETXTIMES))) {
goto fake;
}
if (fuse_isdeadfs(vp) && isvroot) {
goto fake;
}
if (!(data->dataflags & FSESS_INITED) && isvroot) {
goto fake;
}
err = fdisp_simple_putget_vp(&fdi, FUSE_GETXTIMES, vp, context);
if (err) {
/* We don't ever treat this as a hard error. */
err = 0;
goto fake;
}
fgxo = (struct fuse_getxtimes_out *)fdi.answ;
t.tv_sec = (time_t)fgxo->bkuptime; /* XXX: truncation */
t.tv_nsec = fgxo->bkuptimensec;
VATTR_RETURN(in_vap, va_backup_time, t);
VATTR_RETURN(out_vap, va_backup_time, t);
t.tv_sec = (time_t)fgxo->crtime; /* XXX: truncation */
t.tv_nsec = fgxo->crtimensec;
VATTR_RETURN(in_vap, va_create_time, t);
VATTR_RETURN(out_vap, va_create_time, t);
fuse_ticket_drop(fdi.tick);
VTOFUD(vp)->c_flag |= C_XTIMES_VALID;
goto out;
fake:
VATTR_RETURN(out_vap, va_backup_time, kZeroTime);
VATTR_RETURN(out_vap, va_create_time, kZeroTime);
out:
return err;
}
