int
smbfs_readvnode(struct vnode *vp, struct uio *uiop, struct ucred *cred)
{
struct smbmount *smp = VFSTOSMBFS(vp->v_mount);
struct smbnode *np = VTOSMB(vp);
struct thread *td;
struct vattr vattr;
struct smb_cred scred;
int error, lks;
/*
* Protect against method which is not supported for now
*/
if (uiop->uio_segflg == UIO_NOCOPY)
return EOPNOTSUPP;
if (vp->v_type != VREG && vp->v_type != VDIR) {
SMBFSERR("vn types other than VREG or VDIR are unsupported !\n");
return EIO;
}
if (uiop->uio_resid == 0)
return 0;
if (uiop->uio_offset < 0)
return EINVAL;
/* if (uiop->uio_offset + uiop->uio_resid > smp->nm_maxfilesize)
return EFBIG;*/
td = uiop->uio_td;
if (vp->v_type == VDIR) {
lks = LK_EXCLUSIVE;/*lockstatus(vp->v_vnlock, td);*/
if (lks == LK_SHARED)
vn_lock(vp, LK_UPGRADE | LK_RETRY, td);
error = smbfs_readvdir(vp, uiop, cred);
if (lks == LK_SHARED)
vn_lock(vp, LK_DOWNGRADE | LK_RETRY, td);
return error;
}
/* biosize = SSTOCN(smp->sm_share)->sc_txmax;*/
if (np->n_flag & NMODIFIED) {
smbfs_attr_cacheremove(vp);
error = VOP_GETATTR(vp, &vattr, cred, td);
if (error)
return error;
np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
} else {
error = VOP_GETATTR(vp, &vattr, cred, td);
if (error)
return error;
if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) {
error = smbfs_vinvalbuf(vp, td);
if (error)
return error;
np->n_mtime.tv_sec = vattr.va_mtime.tv_sec;
}
}
smb_makescred(&scred, td, cred);
return smb_read(smp->sm_share, np->n_fid, uiop, &scred);
}
/* 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;
}
