1999-10-02 04:06:24 +00:00
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/*
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* Copyright (c) 1999, Boris Popov
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Boris Popov.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/resourcevar.h> /* defines plimit structure in proc struct */
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#include <sys/kernel.h>
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#include <sys/buf.h>
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#include <sys/proc.h>
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#include <sys/mount.h>
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#include <sys/namei.h>
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#include <sys/vnode.h>
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#include <sys/dirent.h>
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#include <sys/signalvar.h>
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#include <sys/sysctl.h>
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#include <vm/vm.h>
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#include <vm/vm_page.h>
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#include <vm/vm_extern.h>
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#include <vm/vm_object.h>
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#include <vm/vm_pager.h>
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#include <vm/vnode_pager.h>
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#include <netncp/ncp.h>
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#include <netncp/ncp_conn.h>
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#include <netncp/ncp_subr.h>
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#include <nwfs/nwfs.h>
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#include <nwfs/nwfs_node.h>
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#include <nwfs/nwfs_subr.h>
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static int nwfs_fastlookup = 1;
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extern struct linker_set sysctl_vfs_nwfs;
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SYSCTL_DECL(_vfs_nwfs);
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SYSCTL_INT(_vfs_nwfs, OID_AUTO, fastlookup, CTLFLAG_RW, &nwfs_fastlookup, 0, "");
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extern int nwfs_pbuf_freecnt;
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#define DE_SIZE (sizeof(struct dirent))
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#define NWFS_RWCACHE
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static int
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nwfs_readvdir(struct vnode *vp, struct uio *uio, struct ucred *cred) {
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struct nwmount *nmp = VTONWFS(vp);
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1999-10-03 12:18:29 +00:00
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int error, count, i;
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1999-10-02 04:06:24 +00:00
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struct dirent dp;
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struct nwnode *np = VTONW(vp);
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struct nw_entry_info fattr;
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struct vnode *newvp;
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struct nameidata nami, *ndp = &nami;
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struct componentname *cnp = &ndp->ni_cnd;
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ncpfid fid;
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np = VTONW(vp);
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NCPVNDEBUG("dirname='%s'\n",np->n_name);
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if (uio->uio_resid < DE_SIZE || (uio->uio_offset < 0))
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return (EINVAL);
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error = 0;
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count = 0;
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ndp->ni_dvp = vp;
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i = uio->uio_offset / DE_SIZE; /* offset in directory */
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if (i == 0) {
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error = ncp_initsearch(vp, uio->uio_procp, cred);
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if (error) {
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NCPVNDEBUG("cannot initialize search, error=%d",error);
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return( error );
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}
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}
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for (; uio->uio_resid >= DE_SIZE; i++) {
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bzero((char *) &dp, DE_SIZE);
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dp.d_reclen = DE_SIZE;
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switch (i) {
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case 0: /* `.' */
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case 1: /* `..' */
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dp.d_fileno = (i == 0) ? np->n_fid.f_id : np->n_parent.f_id;
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if (!dp.d_fileno) dp.d_fileno = NWFS_ROOT_INO;
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dp.d_namlen = i + 1;
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dp.d_name[0] = '.';
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dp.d_name[1] = '.';
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dp.d_name[i + 1] = '\0';
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dp.d_type = DT_DIR;
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break;
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default:
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error = ncp_search_for_file_or_subdir(nmp, &np->n_seq, &fattr, uio->uio_procp, cred);
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if (error && error < 0x80) break;
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dp.d_fileno = fattr.dirEntNum;
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dp.d_type = (fattr.attributes & aDIR) ? DT_DIR : DT_REG;
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dp.d_namlen = fattr.nameLen;
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bcopy(fattr.entryName, dp.d_name, dp.d_namlen);
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dp.d_name[dp.d_namlen] = '\0';
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#if 0
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if (error && eofflag) {
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/* *eofflag = 1;*/
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break;
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}
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#endif
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break;
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}
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if (nwfs_fastlookup && !error && i > 1) {
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fid.f_id = fattr.dirEntNum;
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fid.f_parent = np->n_fid.f_id;
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error = nwfs_nget(vp->v_mount, fid, &fattr, vp, &newvp);
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if (!error) {
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VTONW(newvp)->n_ctime = VTONW(newvp)->n_vattr.va_ctime.tv_sec;
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cnp->cn_nameptr = dp.d_name;
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1999-10-07 12:18:12 +00:00
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cnp->cn_namelen = dp.d_namlen;
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1999-10-02 04:06:24 +00:00
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ndp->ni_vp = newvp;
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cache_enter(ndp->ni_dvp, ndp->ni_vp, cnp);
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vput(newvp);
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} else
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error = 0;
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}
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if (error >= 0x80) {
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error = 0;
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break;
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}
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if ((error = uiomove((caddr_t)&dp, DE_SIZE, uio)))
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break;
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}
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uio->uio_offset = i * DE_SIZE;
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return (error);
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}
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int
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nwfs_readvnode(struct vnode *vp, struct uio *uiop, struct ucred *cred) {
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struct nwmount *nmp = VFSTONWFS(vp->v_mount);
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struct nwnode *np = VTONW(vp);
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struct proc *p;
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struct vattr vattr;
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int error, biosize;
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if (vp->v_type != VREG && vp->v_type != VDIR) {
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printf("%s: vn types other than VREG or VDIR are unsupported !\n",__FUNCTION__);
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return EIO;
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}
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if (uiop->uio_resid == 0) return 0;
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if (uiop->uio_offset < 0) return EINVAL;
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/* if (uiop->uio_offset + uiop->uio_resid > nmp->nm_maxfilesize)
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return (EFBIG);*/
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p = uiop->uio_procp;
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if (vp->v_type == VDIR) {
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error = nwfs_readvdir(vp, uiop, cred);
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return error;
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}
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biosize = NWFSTOCONN(nmp)->buffer_size;
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if (np->n_flag & NMODIFIED) {
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nwfs_attr_cacheremove(vp);
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error = VOP_GETATTR(vp, &vattr, cred, p);
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if (error) return (error);
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np->n_mtime = vattr.va_mtime.tv_sec;
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} else {
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error = VOP_GETATTR(vp, &vattr, cred, p);
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if (error) return (error);
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if (np->n_mtime != vattr.va_mtime.tv_sec) {
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error = nwfs_vinvalbuf(vp, V_SAVE, cred, p, 1);
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if (error) return (error);
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np->n_mtime = vattr.va_mtime.tv_sec;
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}
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}
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error = ncp_read(NWFSTOCONN(nmp), &np->n_fh, uiop,cred);
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return (error);
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}
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int
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nwfs_writevnode(vp, uiop, cred, ioflag)
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register struct vnode *vp;
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register struct uio *uiop;
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struct ucred *cred;
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int ioflag;
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{
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struct nwmount *nmp = VTONWFS(vp);
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struct nwnode *np = VTONW(vp);
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struct proc *p;
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/* struct vattr vattr;*/
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int error = 0;
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if (vp->v_type != VREG) {
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printf("%s: vn types other than VREG unsupported !\n",__FUNCTION__);
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return EIO;
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}
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NCPVNDEBUG("ofs=%d,resid=%d\n",(int)uiop->uio_offset, uiop->uio_resid);
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if (uiop->uio_offset < 0) return EINVAL;
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/* if (uiop->uio_offset + uiop->uio_resid > nmp->nm_maxfilesize)
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return (EFBIG);*/
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p = uiop->uio_procp;
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if (ioflag & (IO_APPEND | IO_SYNC)) {
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if (np->n_flag & NMODIFIED) {
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nwfs_attr_cacheremove(vp);
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error = nwfs_vinvalbuf(vp, V_SAVE, cred, p, 1);
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if (error) return (error);
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}
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if (ioflag & IO_APPEND) {
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/* We can relay only on local information about file size,
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* because until file is closed NetWare will not return
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* the correct size. */
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#if notyet
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nwfs_attr_cacheremove(vp);
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error = VOP_GETATTR(vp, &vattr, cred, p);
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if (error) return (error);
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#endif
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uiop->uio_offset = np->n_size;
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}
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}
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if (uiop->uio_resid == 0) return 0;
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if (p && uiop->uio_offset + uiop->uio_resid > p->p_rlimit[RLIMIT_FSIZE].rlim_cur) {
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psignal(p, SIGXFSZ);
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return (EFBIG);
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}
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error = ncp_write(NWFSTOCONN(nmp), &np->n_fh, uiop, cred);
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NCPVNDEBUG("after: ofs=%d,resid=%d\n",(int)uiop->uio_offset, uiop->uio_resid);
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if (!error) {
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if (uiop->uio_offset > np->n_size) {
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np->n_vattr.va_size = np->n_size = uiop->uio_offset;
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vnode_pager_setsize(vp, np->n_size);
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}
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}
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return (error);
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}
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/*
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* Do an I/O operation to/from a cache block.
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*/
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int
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nwfs_doio(bp, cr, p)
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register struct buf *bp;
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struct ucred *cr;
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struct proc *p;
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{
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register struct uio *uiop;
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register struct vnode *vp;
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struct nwnode *np;
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struct nwmount *nmp;
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int error = 0;
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struct uio uio;
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struct iovec io;
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vp = bp->b_vp;
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np = VTONW(vp);
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nmp = VFSTONWFS(vp->v_mount);
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uiop = &uio;
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uiop->uio_iov = &io;
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uiop->uio_iovcnt = 1;
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uiop->uio_segflg = UIO_SYSSPACE;
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uiop->uio_procp = p;
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if (bp->b_flags & B_READ) {
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io.iov_len = uiop->uio_resid = bp->b_bcount;
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io.iov_base = bp->b_data;
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uiop->uio_rw = UIO_READ;
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switch (vp->v_type) {
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case VREG:
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uiop->uio_offset = ((off_t)bp->b_blkno) * DEV_BSIZE;
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error = ncp_read(NWFSTOCONN(nmp), &np->n_fh, uiop, cr);
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if (error)
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break;
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if (uiop->uio_resid) {
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int left = uiop->uio_resid;
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int nread = bp->b_bcount - left;
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if (left > 0)
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bzero((char *)bp->b_data + nread, left);
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}
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break;
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/* case VDIR:
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nfsstats.readdir_bios++;
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uiop->uio_offset = ((u_quad_t)bp->b_lblkno) * NFS_DIRBLKSIZ;
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if (nmp->nm_flag & NFSMNT_RDIRPLUS) {
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error = nfs_readdirplusrpc(vp, uiop, cr);
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if (error == NFSERR_NOTSUPP)
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nmp->nm_flag &= ~NFSMNT_RDIRPLUS;
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}
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if ((nmp->nm_flag & NFSMNT_RDIRPLUS) == 0)
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error = nfs_readdirrpc(vp, uiop, cr);
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if (error == 0 && uiop->uio_resid == bp->b_bcount)
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bp->b_flags |= B_INVAL;
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break;
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*/
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default:
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printf("nwfs_doio: type %x unexpected\n",vp->v_type);
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break;
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};
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if (error) {
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bp->b_flags |= B_ERROR;
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bp->b_error = error;
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}
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} else { /* write */
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if (((bp->b_blkno * DEV_BSIZE) + bp->b_dirtyend) > np->n_size)
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bp->b_dirtyend = np->n_size - (bp->b_blkno * DEV_BSIZE);
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if (bp->b_dirtyend > bp->b_dirtyoff) {
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io.iov_len = uiop->uio_resid = bp->b_dirtyend - bp->b_dirtyoff;
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uiop->uio_offset = ((off_t)bp->b_blkno) * DEV_BSIZE + bp->b_dirtyoff;
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io.iov_base = (char *)bp->b_data + bp->b_dirtyoff;
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uiop->uio_rw = UIO_WRITE;
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bp->b_flags |= B_WRITEINPROG;
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error = ncp_write(NWFSTOCONN(nmp), &np->n_fh, uiop, cr);
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|
|
bp->b_flags &= ~B_WRITEINPROG;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* For an interrupted write, the buffer is still valid
|
|
|
|
* and the write hasn't been pushed to the server yet,
|
|
|
|
* so we can't set B_ERROR and report the interruption
|
|
|
|
* by setting B_EINTR. For the B_ASYNC case, B_EINTR
|
|
|
|
* is not relevant, so the rpc attempt is essentially
|
|
|
|
* a noop. For the case of a V3 write rpc not being
|
|
|
|
* committed to stable storage, the block is still
|
|
|
|
* dirty and requires either a commit rpc or another
|
|
|
|
* write rpc with iomode == NFSV3WRITE_FILESYNC before
|
|
|
|
* the block is reused. This is indicated by setting
|
|
|
|
* the B_DELWRI and B_NEEDCOMMIT flags.
|
|
|
|
*/
|
|
|
|
if (error == EINTR
|
|
|
|
|| (!error && (bp->b_flags & B_NEEDCOMMIT))) {
|
|
|
|
int s;
|
|
|
|
|
|
|
|
s = splbio();
|
|
|
|
bp->b_flags &= ~(B_INVAL|B_NOCACHE);
|
|
|
|
if ((bp->b_flags & B_ASYNC) == 0)
|
|
|
|
bp->b_flags |= B_EINTR;
|
|
|
|
if ((bp->b_flags & B_PAGING) == 0) {
|
|
|
|
bdirty(bp);
|
|
|
|
bp->b_flags &= ~B_DONE;
|
|
|
|
}
|
|
|
|
if ((bp->b_flags & B_ASYNC) == 0)
|
|
|
|
bp->b_flags |= B_EINTR;
|
|
|
|
splx(s);
|
|
|
|
} else {
|
|
|
|
if (error) {
|
|
|
|
bp->b_flags |= B_ERROR;
|
|
|
|
bp->b_error /*= np->n_error */= error;
|
|
|
|
/* np->n_flag |= NWRITEERR;*/
|
|
|
|
}
|
|
|
|
bp->b_dirtyoff = bp->b_dirtyend = 0;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
bp->b_resid = 0;
|
|
|
|
biodone(bp);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
bp->b_resid = uiop->uio_resid;
|
|
|
|
biodone(bp);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Vnode op for VM getpages.
|
|
|
|
* Wish wish .... get rid from multiple IO routines
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
nwfs_getpages(ap)
|
|
|
|
struct vop_getpages_args /* {
|
|
|
|
struct vnode *a_vp;
|
|
|
|
vm_page_t *a_m;
|
|
|
|
int a_count;
|
|
|
|
int a_reqpage;
|
|
|
|
vm_ooffset_t a_offset;
|
|
|
|
} */ *ap;
|
|
|
|
{
|
|
|
|
#ifndef NWFS_RWCACHE
|
|
|
|
return vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count,
|
|
|
|
ap->a_reqpage);
|
|
|
|
#else
|
|
|
|
int i, error, nextoff, size, toff, npages, count;
|
|
|
|
struct uio uio;
|
|
|
|
struct iovec iov;
|
|
|
|
vm_offset_t kva;
|
|
|
|
struct buf *bp;
|
|
|
|
struct vnode *vp;
|
|
|
|
struct proc *p;
|
|
|
|
struct ucred *cred;
|
|
|
|
struct nwmount *nmp;
|
|
|
|
struct nwnode *np;
|
|
|
|
vm_page_t *pages;
|
|
|
|
|
|
|
|
vp = ap->a_vp;
|
|
|
|
p = curproc; /* XXX */
|
|
|
|
cred = curproc->p_ucred; /* XXX */
|
|
|
|
np = VTONW(vp);
|
|
|
|
nmp = VFSTONWFS(vp->v_mount);
|
|
|
|
pages = ap->a_m;
|
|
|
|
count = ap->a_count;
|
|
|
|
|
|
|
|
if (vp->v_object == NULL) {
|
|
|
|
printf("nwfs_getpages: called with non-merged cache vnode??\n");
|
|
|
|
return VM_PAGER_ERROR;
|
|
|
|
}
|
|
|
|
|
|
|
|
bp = getpbuf(&nwfs_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_procp = p;
|
|
|
|
|
|
|
|
error = ncp_read(NWFSTOCONN(nmp), &np->n_fh, &uio,cred);
|
|
|
|
pmap_qremove(kva, npages);
|
|
|
|
|
|
|
|
relpbuf(bp, &nwfs_pbuf_freecnt);
|
|
|
|
|
|
|
|
if (error && (uio.uio_resid == count)) {
|
|
|
|
printf("nwfs_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;
|
|
|
|
|
|
|
|
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_WANTED)
|
|
|
|
vm_page_activate(m);
|
|
|
|
else
|
|
|
|
vm_page_deactivate(m);
|
|
|
|
vm_page_wakeup(m);
|
|
|
|
} else {
|
|
|
|
vnode_pager_freepage(m);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
#endif /* NWFS_RWCACHE */
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 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.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
nwfs_putpages(ap)
|
|
|
|
struct vop_putpages_args /* {
|
|
|
|
struct vnode *a_vp;
|
|
|
|
vm_page_t *a_m;
|
|
|
|
int a_count;
|
|
|
|
int a_sync;
|
|
|
|
int *a_rtvals;
|
|
|
|
vm_ooffset_t a_offset;
|
|
|
|
} */ *ap;
|
|
|
|
{
|
|
|
|
int error;
|
|
|
|
struct vnode *vp = ap->a_vp;
|
|
|
|
struct proc *p;
|
|
|
|
struct ucred *cred;
|
|
|
|
|
|
|
|
#ifndef NWFS_RWCACHE
|
|
|
|
p = curproc; /* XXX */
|
|
|
|
cred = p->p_ucred; /* XXX */
|
|
|
|
VOP_OPEN(vp, FWRITE, cred, p);
|
|
|
|
error = vnode_pager_generic_putpages(ap->a_vp, ap->a_m, ap->a_count,
|
|
|
|
ap->a_sync, ap->a_rtvals);
|
|
|
|
VOP_CLOSE(vp, FWRITE, cred, p);
|
|
|
|
return error;
|
|
|
|
#else
|
|
|
|
struct uio uio;
|
|
|
|
struct iovec iov;
|
|
|
|
vm_offset_t kva;
|
|
|
|
struct buf *bp;
|
|
|
|
int i, npages, count;
|
|
|
|
int *rtvals;
|
|
|
|
struct nwmount *nmp;
|
|
|
|
struct nwnode *np;
|
|
|
|
vm_page_t *pages;
|
|
|
|
|
|
|
|
p = curproc; /* XXX */
|
|
|
|
cred = p->p_ucred; /* XXX */
|
|
|
|
/* VOP_OPEN(vp, FWRITE, cred, p);*/
|
|
|
|
np = VTONW(vp);
|
|
|
|
nmp = VFSTONWFS(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(&nwfs_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_procp = p;
|
|
|
|
NCPVNDEBUG("ofs=%d,resid=%d\n",(int)uio.uio_offset, uio.uio_resid);
|
|
|
|
|
|
|
|
error = ncp_write(NWFSTOCONN(nmp), &np->n_fh, &uio, cred);
|
|
|
|
/* VOP_CLOSE(vp, FWRITE, cred, p);*/
|
|
|
|
NCPVNDEBUG("paged write done: %d\n", error);
|
|
|
|
|
|
|
|
pmap_qremove(kva, npages);
|
|
|
|
relpbuf(bp, &nwfs_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;
|
|
|
|
pages[i]->dirty = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return rtvals[0];
|
|
|
|
#endif /* NWFS_RWCACHE */
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* Flush and invalidate all dirty buffers. If another process is already
|
|
|
|
* doing the flush, just wait for completion.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
nwfs_vinvalbuf(vp, flags, cred, p, intrflg)
|
|
|
|
struct vnode *vp;
|
|
|
|
int flags;
|
|
|
|
struct ucred *cred;
|
|
|
|
struct proc *p;
|
|
|
|
int intrflg;
|
|
|
|
{
|
|
|
|
register struct nwnode *np = VTONW(vp);
|
|
|
|
/* struct nwmount *nmp = VTONWFS(vp);*/
|
|
|
|
int error = 0, slpflag, slptimeo;
|
|
|
|
|
|
|
|
if (vp->v_flag & VXLOCK) {
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
if (intrflg) {
|
|
|
|
slpflag = PCATCH;
|
|
|
|
slptimeo = 2 * hz;
|
|
|
|
} else {
|
|
|
|
slpflag = 0;
|
|
|
|
slptimeo = 0;
|
|
|
|
}
|
|
|
|
while (np->n_flag & NFLUSHINPROG) {
|
|
|
|
np->n_flag |= NFLUSHWANT;
|
|
|
|
error = tsleep((caddr_t)&np->n_flag, PRIBIO + 2, "nwfsvinv", slptimeo);
|
|
|
|
error = ncp_chkintr(NWFSTOCONN(VTONWFS(vp)), p);
|
|
|
|
if (error == EINTR && intrflg)
|
|
|
|
return EINTR;
|
|
|
|
}
|
|
|
|
np->n_flag |= NFLUSHINPROG;
|
|
|
|
error = vinvalbuf(vp, flags, cred, p, slpflag, 0);
|
|
|
|
while (error) {
|
|
|
|
if (intrflg && (error == ERESTART || error == EINTR)) {
|
|
|
|
np->n_flag &= ~NFLUSHINPROG;
|
|
|
|
if (np->n_flag & NFLUSHWANT) {
|
|
|
|
np->n_flag &= ~NFLUSHWANT;
|
|
|
|
wakeup((caddr_t)&np->n_flag);
|
|
|
|
}
|
|
|
|
return EINTR;
|
|
|
|
}
|
|
|
|
error = vinvalbuf(vp, flags, cred, p, slpflag, 0);
|
|
|
|
}
|
|
|
|
np->n_flag &= ~(NMODIFIED | NFLUSHINPROG);
|
|
|
|
if (np->n_flag & NFLUSHWANT) {
|
|
|
|
np->n_flag &= ~NFLUSHWANT;
|
|
|
|
wakeup((caddr_t)&np->n_flag);
|
|
|
|
}
|
|
|
|
return (error);
|
|
|
|
}
|