int
smbfs_setattr(void *v)
{
struct vop_setattr_args /* {
struct vnode *a_vp;
struct vattr *a_vap;
kauth_cred_t a_cred;
} */ *ap = v;
struct lwp *l = curlwp;
struct vnode *vp = ap->a_vp;
struct smbnode *np = VTOSMB(vp);
struct vattr *vap = ap->a_vap;
struct timespec *mtime, *atime;
struct smb_cred scred;
struct smb_share *ssp = np->n_mount->sm_share;
struct smb_vc *vcp = SSTOVC(ssp);
u_quad_t tsize = 0;
int isreadonly, doclose, error = 0;
SMBVDEBUG0("\n");
if (vap->va_flags != VNOVAL)
return EOPNOTSUPP;
isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY);
/*
* Disallow write attempts if the filesystem is mounted read-only.
*/
if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL ||
vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL ||
vap->va_mode != (mode_t)VNOVAL) && isreadonly)
return EROFS;
smb_makescred(&scred, l, ap->a_cred);
if (vap->va_size != VNOVAL) {
switch (vp->v_type) {
case VDIR:
return EISDIR;
case VREG:
break;
default:
return EINVAL;
};
if (isreadonly)
return EROFS;
doclose = 0;
tsize = np->n_size;
np->n_size = vap->va_size;
uvm_vnp_setsize(vp, vap->va_size);
if ((np->n_flag & NOPEN) == 0) {
error = smbfs_smb_open(np,
SMB_SM_DENYNONE|SMB_AM_OPENRW, &scred);
if (error == 0)
doclose = 1;
}
if (error == 0)
error = smbfs_smb_setfsize(np, vap->va_size, &scred);
if (doclose)
smbfs_smb_close(ssp, np->n_fid, NULL, &scred);
if (error) {
np->n_size = tsize;
uvm_vnp_setsize(vp, tsize);
return (error);
}
}
mtime = atime = NULL;
if (vap->va_mtime.tv_sec != VNOVAL)
mtime = &vap->va_mtime;
if (vap->va_atime.tv_sec != VNOVAL)
atime = &vap->va_atime;
if (mtime != atime) {
error = kauth_authorize_vnode(ap->a_cred,
KAUTH_VNODE_WRITE_TIMES, ap->a_vp, NULL,
genfs_can_chtimes(ap->a_vp, vap->va_vaflags,
VTOSMBFS(vp)->sm_args.uid, ap->a_cred));
if (error)
return (error);
#if 0
if (mtime == NULL)
mtime = &np->n_mtime;
if (atime == NULL)
atime = &np->n_atime;
#endif
/*
* If file is opened, then we can use handle based calls.
* If not, use path based ones.
*/
if ((np->n_flag & NOPEN) == 0) {
if (vcp->vc_flags & SMBV_WIN95) {
error = VOP_OPEN(vp, FWRITE, ap->a_cred);
if (!error) {
/* error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred);
VOP_GETATTR(vp, &vattr, ap->a_cred);*/
if (mtime)
np->n_mtime = *mtime;
VOP_CLOSE(vp, FWRITE, ap->a_cred);
}
} else if (SMB_CAPS(vcp) & SMB_CAP_NT_SMBS) {
error = smbfs_smb_setpattrNT(np, 0, mtime, atime, &scred);
} else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) {
error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred);
} else {
error = smbfs_smb_setpattr(np, 0, mtime, &scred);
}
} else {
if (SMB_CAPS(vcp) & SMB_CAP_NT_SMBS) {
error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred);
} else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) {
error = smbfs_smb_setftime(np, mtime, atime, &scred);
} else {
/*
* XXX I have no idea how to handle this for core
* level servers. The possible solution is to
* update mtime after file is closed.
*/
}
}
}
/*
* Invalidate attribute cache in case if server doesn't set
* required attributes.
*/
smbfs_attr_cacheremove(vp); /* invalidate cache */
VOP_GETATTR(vp, vap, ap->a_cred);
np->n_mtime.tv_sec = vap->va_mtime.tv_sec;
VN_KNOTE(vp, NOTE_ATTRIB);
return error;
}
/*
* Vnode op for VM putpages.
* possible bug: all IO done in sync mode
* Note that vop_close always invalidate pages before close, so it's
* not necessary to open vnode.
*
* smbfs_putpages(struct vnode *a_vp, vm_page_t *a_m, int a_count, int a_sync,
* int *a_rtvals, vm_ooffset_t a_offset)
*/
int
smbfs_putpages(struct vop_putpages_args *ap)
{
int error;
struct vnode *vp = ap->a_vp;
struct thread *td = curthread; /* XXX */
struct ucred *cred;
#ifdef SMBFS_RWGENERIC
KKASSERT(td->td_proc);
cred = td->td_proc->p_ucred;
VOP_OPEN(vp, FWRITE, cred, NULL);
error = vop_stdputpages(ap);
VOP_CLOSE(vp, FWRITE, cred);
return error;
#else
struct uio uio;
struct iovec iov;
vm_offset_t kva;
struct buf *bp;
int i, npages, count;
int doclose;
int *rtvals;
struct smbmount *smp;
struct smbnode *np;
struct smb_cred scred;
vm_page_t *pages;
KKASSERT(td->td_proc);
cred = td->td_proc->p_ucred;
/* VOP_OPEN(vp, FWRITE, cred, NULL);*/
np = VTOSMB(vp);
smp = VFSTOSMBFS(vp->v_mount);
pages = ap->a_m;
count = ap->a_count;
rtvals = ap->a_rtvals;
npages = btoc(count);
for (i = 0; i < npages; i++) {
rtvals[i] = VM_PAGER_AGAIN;
}
bp = getpbuf_kva(&smbfs_pbuf_freecnt);
kva = (vm_offset_t) bp->b_data;
pmap_qenter(kva, pages, npages);
iov.iov_base = (caddr_t) kva;
iov.iov_len = count;
uio.uio_iov = &iov;
uio.uio_iovcnt = 1;
uio.uio_offset = IDX_TO_OFF(pages[0]->pindex);
uio.uio_resid = count;
uio.uio_segflg = UIO_SYSSPACE;
uio.uio_rw = UIO_WRITE;
uio.uio_td = td;
SMBVDEBUG("ofs=%d,resid=%d\n",(int)uio.uio_offset, uio.uio_resid);
smb_makescred(&scred, td, cred);
/*
* This is kinda nasty. Since smbfs is physically closing the
* fid on close(), we have to reopen it if necessary. There are
* other races here too, such as if another process opens the same
* file while we are blocked in read, or the file is open read-only
* XXX
*/
error = 0;
doclose = 0;
if (np->n_opencount == 0) {
error = smbfs_smb_open(np, SMB_AM_OPENRW, &scred);
if (error == 0)
doclose = 1;
}
if (error == 0)
error = smb_write(smp->sm_share, np->n_fid, &uio, &scred);
if (doclose)
smbfs_smb_close(smp->sm_share, np->n_fid, NULL, &scred);
/* VOP_CLOSE(vp, FWRITE, cred);*/
SMBVDEBUG("paged write done: %d\n", error);
pmap_qremove(kva, npages);
relpbuf(bp, &smbfs_pbuf_freecnt);
if (!error) {
int nwritten = round_page(count - uio.uio_resid) / PAGE_SIZE;
for (i = 0; i < nwritten; i++) {
rtvals[i] = VM_PAGER_OK;
vm_page_undirty(pages[i]);
}
}
return rtvals[0];
#endif /* SMBFS_RWGENERIC */
}
/* ARGSUSED */
int
smbfs_open(void *v)
{
struct vop_open_args /* {
struct vnode *a_vp;
int a_mode;
kauth_cred_t a_cred;
} */ *ap = v;
struct lwp *l = curlwp;
struct vnode *vp = ap->a_vp;
struct smbnode *np = VTOSMB(vp);
struct smb_cred scred;
struct vattr vattr;
u_int32_t sv_caps = SMB_CAPS(SSTOVC(np->n_mount->sm_share));
int error, accmode;
SMBVDEBUG("%.*s,%d\n", (int) np->n_nmlen, np->n_name,
(np->n_flag & NOPEN) != 0);
if (vp->v_type != VREG && vp->v_type != VDIR) {
SMBFSERR("open eacces vtype=%d\n", vp->v_type);
return EACCES;
}
if (vp->v_type == VDIR) {
if ((sv_caps & SMB_CAP_NT_SMBS) == 0) {
np->n_flag |= NOPEN;
return 0;
}
goto do_open; /* skip 'modified' check */
}
if (np->n_flag & NMODIFIED) {
if ((error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, l, 1)) == EINTR)
return error;
smbfs_attr_cacheremove(vp);
error = VOP_GETATTR(vp, &vattr, ap->a_cred);
if (error)
return error;
np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
} else {
error = VOP_GETATTR(vp, &vattr, ap->a_cred);
if (error)
return error;
if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) {
error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, l, 1);
if (error == EINTR)
return error;
np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
}
}
do_open:
if ((np->n_flag & NOPEN) != 0)
return 0;
smb_makescred(&scred, l, ap->a_cred);
if (vp->v_type == VDIR)
error = smbfs_smb_ntcreatex(np,
SMB_SM_DENYNONE|SMB_AM_OPENREAD, &scred);
else {
/*
* Use DENYNONE to give unixy semantics of permitting
* everything not forbidden by permissions. Ie denial
* is up to server with clients/openers needing to use
* advisory locks for further control.
*/
accmode = SMB_SM_DENYNONE|SMB_AM_OPENREAD;
if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0)
accmode = SMB_SM_DENYNONE|SMB_AM_OPENRW;
error = smbfs_smb_open(np, accmode, &scred);
if (error) {
if (ap->a_mode & FWRITE)
return EACCES;
error = smbfs_smb_open(np,
SMB_SM_DENYNONE|SMB_AM_OPENREAD, &scred);
}
}
if (!error)
np->n_flag |= NOPEN;
smbfs_attr_cacheremove(vp);
return error;
}
/*
* Vnode op for VM getpages.
* Wish wish .... get rid from multiple IO routines
*
* smbfs_getpages(struct vnode *a_vp, vm_page_t *a_m, int a_count,
* int a_reqpage, vm_ooffset_t a_offset)
*/
int
smbfs_getpages(struct vop_getpages_args *ap)
{
#ifdef SMBFS_RWGENERIC
return vop_stdgetpages(ap);
#else
int i, error, npages;
int doclose;
size_t size, toff, nextoff, count;
struct uio uio;
struct iovec iov;
vm_offset_t kva;
struct buf *bp;
struct vnode *vp;
struct thread *td = curthread; /* XXX */
struct ucred *cred;
struct smbmount *smp;
struct smbnode *np;
struct smb_cred scred;
vm_page_t *pages;
KKASSERT(td->td_proc);
vp = ap->a_vp;
cred = td->td_proc->p_ucred;
np = VTOSMB(vp);
smp = VFSTOSMBFS(vp->v_mount);
pages = ap->a_m;
count = (size_t)ap->a_count;
if (vp->v_object == NULL) {
kprintf("smbfs_getpages: called with non-merged cache vnode??\n");
return VM_PAGER_ERROR;
}
smb_makescred(&scred, td, cred);
bp = getpbuf_kva(&smbfs_pbuf_freecnt);
npages = btoc(count);
kva = (vm_offset_t) bp->b_data;
pmap_qenter(kva, pages, npages);
iov.iov_base = (caddr_t) kva;
iov.iov_len = count;
uio.uio_iov = &iov;
uio.uio_iovcnt = 1;
uio.uio_offset = IDX_TO_OFF(pages[0]->pindex);
uio.uio_resid = count;
uio.uio_segflg = UIO_SYSSPACE;
uio.uio_rw = UIO_READ;
uio.uio_td = td;
/*
* This is kinda nasty. Since smbfs is physically closing the
* fid on close(), we have to reopen it if necessary. There are
* other races here too, such as if another process opens the same
* file while we are blocked in read. XXX
*/
error = 0;
doclose = 0;
if (np->n_opencount == 0) {
error = smbfs_smb_open(np, SMB_AM_OPENREAD, &scred);
if (error == 0)
doclose = 1;
}
if (error == 0)
error = smb_read(smp->sm_share, np->n_fid, &uio, &scred);
if (doclose)
smbfs_smb_close(smp->sm_share, np->n_fid, NULL, &scred);
pmap_qremove(kva, npages);
relpbuf(bp, &smbfs_pbuf_freecnt);
if (error && (uio.uio_resid == count)) {
kprintf("smbfs_getpages: error %d\n",error);
for (i = 0; i < npages; i++) {
if (ap->a_reqpage != i)
vnode_pager_freepage(pages[i]);
}
return VM_PAGER_ERROR;
}
size = count - uio.uio_resid;
for (i = 0, toff = 0; i < npages; i++, toff = nextoff) {
vm_page_t m;
nextoff = toff + PAGE_SIZE;
m = pages[i];
m->flags &= ~PG_ZERO;
/*
* NOTE: pmap dirty bit should have already been cleared.
* We do not clear it here.
*/
if (nextoff <= size) {
m->valid = VM_PAGE_BITS_ALL;
m->dirty = 0;
} else {
int nvalid = ((size + DEV_BSIZE - 1) - toff) &
~(DEV_BSIZE - 1);
vm_page_set_validclean(m, 0, nvalid);
}
if (i != ap->a_reqpage) {
/*
* Whether or not to leave the page activated is up in
* the air, but we should put the page on a page queue
* somewhere (it already is in the object). Result:
* It appears that emperical results show that
* deactivating pages is best.
*/
/*
* Just in case someone was asking for this page we
* now tell them that it is ok to use.
*/
if (!error) {
if (m->flags & PG_REFERENCED)
vm_page_activate(m);
else
vm_page_deactivate(m);
vm_page_wakeup(m);
} else {
vnode_pager_freepage(m);
}
}
}
return 0;
#endif /* SMBFS_RWGENERIC */
}
