diff options
Diffstat (limited to 'sys/nwfs/nwfs_node.c')
| -rw-r--r-- | sys/nwfs/nwfs_node.c | 377 |
1 files changed, 0 insertions, 377 deletions
diff --git a/sys/nwfs/nwfs_node.c b/sys/nwfs/nwfs_node.c deleted file mode 100644 index 9c1f086..0000000 --- a/sys/nwfs/nwfs_node.c +++ /dev/null @@ -1,377 +0,0 @@ -/* - * Copyright (c) 1999, 2000 Boris Popov - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by Boris Popov. - * 4. Neither the name of the author nor the names of any co-contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $FreeBSD$ - */ -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/kernel.h> -#include <sys/lock.h> -#include <sys/malloc.h> -#include <sys/mount.h> -#include <sys/mutex.h> -#include <sys/proc.h> -#include <sys/queue.h> -#include <sys/sysctl.h> -#include <sys/time.h> -#include <sys/vnode.h> - -#include <vm/vm.h> -#include <vm/vm_extern.h> -#include <vm/vm_page.h> -#include <vm/vm_object.h> - -#include <netncp/ncp.h> -#include <netncp/ncp_conn.h> -#include <netncp/ncp_subr.h> - -#include <nwfs/nwfs.h> -#include <nwfs/nwfs_mount.h> -#include <nwfs/nwfs_node.h> -#include <nwfs/nwfs_subr.h> - -#define NWNOHASH(fhsum) (&nwhashtbl[(fhsum.f_id) & nwnodehash]) - -extern vop_t **nwfs_vnodeop_p; - -static LIST_HEAD(nwnode_hash_head,nwnode) *nwhashtbl; -static u_long nwnodehash; -static struct lock nwhashlock; - -MALLOC_DEFINE(M_NWNODE, "NWFS node", "NWFS vnode private part"); -MALLOC_DEFINE(M_NWFSHASH, "NWFS hash", "NWFS has table"); - -static int nwfs_sysctl_vnprint(SYSCTL_HANDLER_ARGS); - -extern struct linker_set sysctl_vfs_nwfs; - -SYSCTL_DECL(_vfs_nwfs); - -SYSCTL_PROC(_vfs_nwfs, OID_AUTO, vnprint, CTLFLAG_WR|CTLTYPE_OPAQUE, - NULL, 0, nwfs_sysctl_vnprint, "S,vnlist", "vnode hash"); - -void -nwfs_hash_init(void) { - nwhashtbl = hashinit(desiredvnodes, M_NWFSHASH, &nwnodehash); - lockinit(&nwhashlock, PVFS, "nwfshl", 0, 0); -} - -void -nwfs_hash_free(void) { - lockdestroy(&nwhashlock); - free(nwhashtbl, M_NWFSHASH); -} - -int -nwfs_sysctl_vnprint(SYSCTL_HANDLER_ARGS) { - struct nwnode *np; - struct nwnode_hash_head *nhpp; - struct vnode *vp; - int i; - - if (nwfs_debuglevel == 0) - return 0; - printf("Name:uc:hc:fid:pfid\n"); - for(i = 0; i <= nwnodehash; i++) { - nhpp = &nwhashtbl[i]; - LIST_FOREACH(np, nhpp, n_hash) { - vp = NWTOV(np); - vprint(NULL, vp); - printf("%s:%d:%d:%d:%d\n",np->n_name,vp->v_usecount,vp->v_holdcnt, - np->n_fid.f_id, np->n_fid.f_parent); - } - } - return 0; -} - -/* - * Search nwnode with given fid. - * Hash list should be locked by caller. - */ -static int -nwfs_hashlookup(struct nwmount *nmp, ncpfid fid, struct nwnode **npp) -{ - struct nwnode *np; - struct nwnode_hash_head *nhpp; - - nhpp = NWNOHASH(fid); - LIST_FOREACH(np, nhpp, n_hash) { - if (nmp != np->n_mount || !NWCMPF(&fid, &np->n_fid)) - continue; - if (npp) - *npp = np; - return 0; - } - return ENOENT; -} - -/* - * Allocate new nwfsnode/vnode from given nwnode. - * Vnode referenced and not locked. - */ -static int -nwfs_allocvp(struct mount *mp, ncpfid fid, struct nw_entry_info *fap, - struct vnode *dvp, struct vnode **vpp) -{ - struct proc *p = curproc; /* XXX */ - struct nwnode *np; - struct nwnode_hash_head *nhpp; - struct nwmount *nmp = VFSTONWFS(mp); - struct vnode *vp; - int error; - -loop: - lockmgr(&nwhashlock, LK_EXCLUSIVE, NULL, p); -rescan: - if (nwfs_hashlookup(nmp, fid, &np) == 0) { - vp = NWTOV(np); - mtx_lock(&vp->v_interlock); - lockmgr(&nwhashlock, LK_RELEASE, NULL, p); - if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK, p)) - goto loop; - if (fap) - np->n_attr = fap->attributes; - *vpp = vp; - return(0); - } - lockmgr(&nwhashlock, LK_RELEASE, NULL, p); - - if (fap == NULL || ((fap->attributes & aDIR) == 0 && dvp == NULL)) - panic("nwfs_allocvp: fap = %p, dvp = %p\n", fap, dvp); - /* - * Do the MALLOC before the getnewvnode since doing so afterward - * might cause a bogus v_data pointer to get dereferenced - * elsewhere if MALLOC should block. - */ - MALLOC(np, struct nwnode *, sizeof *np, M_NWNODE, M_WAITOK | M_ZERO); - error = getnewvnode(VT_NWFS, mp, nwfs_vnodeop_p, &vp); - if (error) { - *vpp = NULL; - FREE(np, M_NWNODE); - return (error); - } - vp->v_data = np; - np->n_vnode = vp; - np->n_mount = nmp; - np->n_attr = fap->attributes; - vp->v_type = np->n_attr & aDIR ? VDIR : VREG; - np->n_fid = fid; - if (dvp) { - np->n_parent = VTONW(dvp)->n_fid; - } - lockinit(&vp->v_lock, PINOD, "nwnode", 0, LK_CANRECURSE); - lockmgr(&nwhashlock, LK_EXCLUSIVE, NULL, p); - /* - * Another process can create vnode while we blocked in malloc() or - * getnewvnode(). Rescan list again. - */ - if (nwfs_hashlookup(nmp, fid, NULL) == 0) { - vp->v_data = NULL; - np->n_vnode = NULL; - vrele(vp); - FREE(np, M_NWNODE); - goto rescan; - } - *vpp = vp; - nhpp = NWNOHASH(fid); - LIST_INSERT_HEAD(nhpp, np, n_hash); - vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p); - lockmgr(&nwhashlock, LK_RELEASE, NULL, p); - - if (vp->v_type == VDIR && dvp && (dvp->v_flag & VROOT) == 0) { - np->n_flag |= NREFPARENT; - vref(dvp); - } - return 0; -} - -int -nwfs_nget(struct mount *mp, ncpfid fid, struct nw_entry_info *fap, - struct vnode *dvp, struct vnode **vpp) -{ - struct vnode *vp; - int error; - - *vpp = NULL; - error = nwfs_allocvp(mp, fid, fap, dvp, &vp); - if (error) - return error; - if (fap) - nwfs_attr_cacheenter(vp, fap); - *vpp = vp; - return 0; -} - -int -nwfs_lookupnp(struct nwmount *nmp, ncpfid fid, struct proc *p, - struct nwnode **npp) -{ - int error; - - lockmgr(&nwhashlock, LK_EXCLUSIVE, NULL, p); - error = nwfs_hashlookup(nmp, fid, npp); - lockmgr(&nwhashlock, LK_RELEASE, NULL, p); - return error; -} - -/* - * Free nwnode, and give vnode back to system - */ -int -nwfs_reclaim(ap) - struct vop_reclaim_args /* { - struct vnode *a_vp; - struct proc *a_p; - } */ *ap; -{ - struct vnode *dvp = NULL, *vp = ap->a_vp; - struct nwnode *dnp, *np = VTONW(vp); - struct nwmount *nmp = VTONWFS(vp); - struct proc *p = ap->a_p; - - NCPVNDEBUG("%s,%d\n", np->n_name, vp->v_usecount); - if (np->n_flag & NREFPARENT) { - np->n_flag &= ~NREFPARENT; - if (nwfs_lookupnp(nmp, np->n_parent, p, &dnp) == 0) { - dvp = dnp->n_vnode; - } else { - NCPVNDEBUG("%s: has no parent ?\n",np->n_name); - } - } - lockmgr(&nwhashlock, LK_EXCLUSIVE, NULL, p); - LIST_REMOVE(np, n_hash); - lockmgr(&nwhashlock, LK_RELEASE, NULL, p); - cache_purge(vp); - if (nmp->n_root == np) { - nmp->n_root = NULL; - } - vp->v_data = NULL; - FREE(np, M_NWNODE); - if (dvp) { - vrele(dvp); - } - return (0); -} - -int -nwfs_inactive(ap) - struct vop_inactive_args /* { - struct vnode *a_vp; - struct proc *a_p; - } */ *ap; -{ - struct proc *p = ap->a_p; - struct ucred *cred = p->p_ucred; - struct vnode *vp = ap->a_vp; - struct nwnode *np = VTONW(vp); - int error; - - NCPVNDEBUG("%s: %d\n", VTONW(vp)->n_name, vp->v_usecount); - if (np->opened) { - error = nwfs_vinvalbuf(vp, V_SAVE, cred, p, 1); - error = ncp_close_file(NWFSTOCONN(VTONWFS(vp)), &np->n_fh, p, cred); - np->opened = 0; - } - VOP_UNLOCK(vp, 0, p); - if (np->n_flag & NSHOULDFREE) { - cache_purge(vp); - vgone(vp); - } - return (0); -} -/* - * routines to maintain vnode attributes cache - * nwfs_attr_cacheenter: unpack np.i to va structure - */ -void -nwfs_attr_cacheenter(struct vnode *vp, struct nw_entry_info *fi) -{ - struct nwnode *np = VTONW(vp); - struct nwmount *nmp = VTONWFS(vp); - struct vattr *va = &np->n_vattr; - - va->va_type = vp->v_type; /* vnode type (for create) */ - np->n_nmlen = fi->nameLen; - bcopy(fi->entryName, np->n_name, np->n_nmlen); - np->n_name[fi->nameLen] = 0; - if (vp->v_type == VREG) { - if (va->va_size != fi->dataStreamSize) { - va->va_size = fi->dataStreamSize; - vnode_pager_setsize(vp, va->va_size); - } - va->va_mode = nmp->m.file_mode; /* files access mode and type */ - } else if (vp->v_type == VDIR) { - va->va_size = 16384; /* should be a better way ... */ - va->va_mode = nmp->m.dir_mode; /* files access mode and type */ - } else - return; - np->n_size = va->va_size; - va->va_nlink = 1; /* number of references to file */ - va->va_uid = nmp->m.uid; /* owner user id */ - va->va_gid = nmp->m.gid; /* owner group id */ - va->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0]; - va->va_fileid = np->n_fid.f_id; /* file id */ - if (va->va_fileid == 0) - va->va_fileid = NWFS_ROOT_INO; - va->va_blocksize=nmp->connh->nh_conn->buffer_size;/* blocksize preferred for i/o */ - /* time of last modification */ - ncp_dos2unixtime(fi->modifyDate, fi->modifyTime, 0, nmp->m.tz, &va->va_mtime); - /* time of last access */ - ncp_dos2unixtime(fi->lastAccessDate, 0, 0, nmp->m.tz, &va->va_atime); - va->va_ctime = va->va_mtime; /* time file changed */ - va->va_gen = VNOVAL; /* generation number of file */ - va->va_flags = 0; /* flags defined for file */ - va->va_rdev = VNOVAL; /* device the special file represents */ - va->va_bytes = va->va_size; /* bytes of disk space held by file */ - va->va_filerev = 0; /* file modification number */ - va->va_vaflags = 0; /* operations flags */ - np->n_vattr = *va; - if (np->n_mtime == 0) { - np->n_mtime = va->va_mtime.tv_sec; - } - np->n_atime = time_second; - np->n_dosfid = fi->DosDirNum; - return; -} - -int -nwfs_attr_cachelookup(struct vnode *vp, struct vattr *va) -{ - struct nwnode *np = VTONW(vp); - int diff; - - diff = time_second - np->n_atime; - if (diff > 2) { /* XXX should be configurable */ - return ENOENT; - } - *va = np->n_vattr; - return 0; -} |
