576 lines
14 KiB
C
576 lines
14 KiB
C
/* $NetBSD: smbfs_vfsops.c,v 1.1 2000/12/07 03:33:47 deberg Exp $ */
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/*
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* Copyright (c) 2000, 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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#include "netsmb.h"
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#ifndef NNETSMB
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#error "SMBFS requires NSMB device"
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#endif
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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#include <sys/kernel.h>
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#include <uvm/uvm_extern.h>
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#include <sys/sysctl.h>
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#include <sys/vnode.h>
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <sys/malloc.h>
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#include <sys/tree.h>
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#include <netsmb/smb.h>
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#include <netsmb/smb_conn.h>
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#include <netsmb/smb_subr.h>
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#include <netsmb/smb_dev.h>
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#include <netsmb/smb_lock.h>
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#include <smbfs/smbfs.h>
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#include <smbfs/smbfs_node.h>
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#include <smbfs/smbfs_subr.h>
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#ifdef FB_CURRENT
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#include <sys/bio.h>
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#endif
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#include <sys/buf.h>
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int smbfs_debuglevel = 0;
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#ifndef NetBSD
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static int smbfs_version = SMBFS_VERSION;
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#endif
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#ifdef SMBFS_USEZONE
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#include <vm/vm_extern.h>
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#include <vm/vm_zone.h>
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vm_zone_t smbfsmount_zone;
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#endif
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#ifndef NetBSD
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#ifdef SYSCTL_DECL
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SYSCTL_DECL(_vfs_smbfs);
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#endif
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SYSCTL_NODE(_vfs, OID_AUTO, smbfs, CTLFLAG_RW, 0, "SMB/CIFS file system");
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SYSCTL_INT(_vfs_smbfs, OID_AUTO, version, CTLFLAG_RD, &smbfs_version, 0, "");
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SYSCTL_INT(_vfs_smbfs, OID_AUTO, debuglevel, CTLFLAG_RW, &smbfs_debuglevel, 0, "");
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#endif
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int smbfs_mount __P((struct mount *, const char *, void *,
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struct nameidata *, struct proc *));
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int smbfs_quotactl __P((struct mount *, int, uid_t, caddr_t,
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struct proc *));
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int smbfs_root __P((struct mount *, struct vnode **));
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int smbfs_start __P((struct mount *, int, struct proc *));
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int smbfs_statfs __P((struct mount *, struct statfs *,
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struct proc *));
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int smbfs_sync __P((struct mount *, int, struct ucred *,
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struct proc *));
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int smbfs_unmount __P((struct mount *, int, struct proc *));
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void smbfs_init __P((void));
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#ifndef __NetBSD__
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static int smbfs_uninit __P((struct vfsconf *vfsp));
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#else
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static void smbfs_uninit __P((void));
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#endif
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int smbfs_vget __P((struct mount *mp, ino_t ino,
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struct vnode **vpp));
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int smbfs_fhtovp __P((struct mount *, struct fid *,
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struct vnode **));
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int smbfs_vptofh __P((struct vnode *, struct fid *));
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#ifndef NetBSD
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static struct vfsops smbfs_vfsops = {
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smbfs_mount,
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smbfs_start,
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smbfs_unmount,
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smbfs_root,
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smbfs_quotactl,
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smbfs_statfs,
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smbfs_sync,
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#if __FreeBSD_version > 400008
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vfs_stdvget,
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vfs_stdfhtovp, /* shouldn't happen */
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vfs_stdcheckexp,
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vfs_stdvptofh, /* shouldn't happen */
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#else
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smbfs_vget,
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smbfs_fhtovp,
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smbfs_vptofh,
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#endif
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smbfs_init,
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smbfs_uninit,
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#ifndef FB_RELENG3
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vfs_stdextattrctl,
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#else
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#define M_USE_RESERVE M_KERNEL
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&sysctl___vfs_smbfs
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#endif
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};
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VFS_SET(smbfs_vfsops, smbfs, VFCF_NETWORK);
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#else
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extern struct vnodeopv_desc smbfs_vnodeop_opv_desc;
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struct vnodeopv_desc *smbfs_vnodeopv_descs[] = {
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&smbfs_vnodeop_opv_desc,
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NULL,
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};
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struct vfsops smbfs_vfsops = {
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MOUNT_SMBFS,
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smbfs_mount,
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smbfs_start,
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smbfs_unmount,
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smbfs_root,
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smbfs_quotactl,
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smbfs_statfs,
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smbfs_sync,
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smbfs_vget,
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smbfs_fhtovp,
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smbfs_vptofh,
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smbfs_init,
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#ifdef __NetBSD__
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smbfs_uninit,
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#endif
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(int (*) (int *, u_int, void *, size_t *, void *, size_t, struct proc *))
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eopnotsupp, /* sysctl */
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(int (*)(void)) eopnotsupp, /* mountroot */
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(int (*)(struct mount *, struct mbuf *, int *, struct ucred **))
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eopnotsupp, /* checkexp */
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smbfs_vnodeopv_descs,
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};
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#define M_USE_RESERVE M_WAITOK
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#ifndef index
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#define index strchr
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#endif
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#endif
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#ifdef MODULE_DEPEND
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MODULE_DEPEND(smbfs, netsmb, 1, 1, 1);
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MODULE_DEPEND(smbfs, libiconv, 1, 1, 1);
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#endif
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int smbfs_pbuf_freecnt = -1; /* start out unlimited */
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int
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smbfs_mount(struct mount *mp, const char *path, void *data,
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struct nameidata *ndp, struct proc *p)
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{
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struct smbfs_args args; /* will hold data from mount request */
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struct smbmount *smp = NULL;
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struct smb_conn *scp;
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struct smb_share *ssp = NULL;
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struct vnode *vp;
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struct smb_cred scred;
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size_t size;
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int error;
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char *pc, *pe;
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SMBVDEBUG("\n");
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if (data == NULL) {
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printf("missing data argument\n");
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return EINVAL;
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}
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if (mp->mnt_flag & MNT_UPDATE) {
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printf("MNT_UPDATE not implemented\n");
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return EOPNOTSUPP;
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}
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error = copyin(data, (caddr_t)&args, sizeof(struct smbfs_args));
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if (error)
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return error;
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if (args.version != SMBFS_VERSION) {
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printf("mount version mismatch: kernel=%d, mount=%d\n",
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SMBFS_VERSION, args.version);
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return EINVAL;
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}
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smb_makescred(&scred, p, p->p_ucred);
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error = smb_dev2share(args.dev, SMBM_EXEC, &scred, &ssp);
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if (error) {
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printf("invalid device handle %d\n", args.dev);
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return error;
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}
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scp = SSTOCN(ssp);
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smb_share_unlock(ssp, 0, &scred);
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mp->mnt_stat.f_iosize = SSTOVC(ssp)->vc_txmax;
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#ifdef SMBFS_USEZONE
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smp = zalloc(smbfsmount_zone);
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#else
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MALLOC(smp, struct smbmount*, sizeof(*smp), M_SMBFSDATA, M_USE_RESERVE);
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#endif
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if (smp == NULL) {
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printf("could not alloc smbmount\n");
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error = ENOMEM;
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goto bad;
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}
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bzero(smp, sizeof(*smp));
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mp->mnt_data = (qaddr_t)smp;
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smp->sm_share = ssp;
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smp->sm_root = NULL;
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smp->sm_args = args;
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smp->sm_caseopt = args.caseopt;
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smp->sm_args.file_mode = (smp->sm_args.file_mode &
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(S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFREG;
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smp->sm_args.dir_mode = (smp->sm_args.dir_mode &
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(S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFDIR;
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simple_lock_init(&smp->sm_npslock);
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error = copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN - 1, &size);
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if (error)
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goto bad;
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bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size);
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pc = mp->mnt_stat.f_mntfromname;
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pe = pc + sizeof(mp->mnt_stat.f_mntfromname);
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bzero(pc, MNAMELEN);
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*pc++ = '/';
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*pc++ = '/';
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pc=index(strncpy(pc, SSTOVC(ssp)->vc_user, pe - pc - 2), 0);
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if (pc < pe-1) {
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*(pc++) = '@';
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pc = index(strncpy(pc, scp->sc_srvname, pe - pc - 2), 0);
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if (pc < pe - 1) {
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*(pc++) = '/';
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strncpy(pc, ssp->ss_name, pe - pc - 2);
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}
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}
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/* protect against invalid mount points */
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smp->sm_args.mount_point[sizeof(smp->sm_args.mount_point) - 1] = '\0';
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#ifdef __NetBSD__
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vfs_getnewfsid(mp);
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#else
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vfs_getnewfsid(mp, MOUNT_SMBFS);
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#endif
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error = smbfs_root(mp, &vp);
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if (error)
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goto bad;
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VOP_UNLOCK(vp, 0/* , curproc */);
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SMBVDEBUG("root.v_usecount = %ld\n", vp->v_usecount);
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return error;
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bad:
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if (smp)
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#ifdef SMBFS_USEZONE
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zfree(smbfsmount_zone, smp);
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#else
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free(smp, M_SMBFSDATA);
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#endif
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if (ssp)
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smb_share_put(ssp, p);
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return error;
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}
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/* Unmount the filesystem described by mp. */
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int
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smbfs_unmount(struct mount *mp, int mntflags, struct proc *p)
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{
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struct smbmount *smp = VFSTOSMBFS(mp);
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struct vnode *vp;
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int error, flags;
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SMBVDEBUG("smbfs_unmount: flags=%04x\n", mntflags);
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flags = 0;
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if (mntflags & MNT_FORCE)
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flags |= FORCECLOSE;
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error = VFS_ROOT(mp, &vp);
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if (error)
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return (error);
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if ((mntflags & MNT_FORCE) == 0 && vp->v_usecount > 2) {
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printf("smbfs_unmount: usecnt=%d\n", vp->v_usecount);
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vput(vp);
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return EBUSY;
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}
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error = vflush(mp, vp, flags);
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if (error) {
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vput(vp);
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return error;
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}
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vput(vp);
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vrele(vp);
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vgone(vp);
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smb_share_put(smp->sm_share, p);
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mp->mnt_data = (qaddr_t)0;
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#ifdef SMBFS_USEZONE
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zfree(smbfsmount_zone, smp);
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#else
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free(smp, M_SMBFSDATA);
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#endif
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mp->mnt_flag &= ~MNT_LOCAL;
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return error;
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}
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/*
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* Return locked root vnode of a filesystem
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*/
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int
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smbfs_root(struct mount *mp, struct vnode **vpp)
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{
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struct smbmount *smp = VFSTOSMBFS(mp);
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struct vnode *vp;
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struct smbnode *np;
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struct smbfattr fattr;
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struct proc *p = curproc;
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struct ucred *cred = p->p_ucred;
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struct smb_cred scred;
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int error;
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SMBVDEBUG("\n");
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if (smp->sm_root) {
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*vpp = SMBTOV(smp->sm_root);
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vget(*vpp, LK_EXCLUSIVE | LK_RETRY/* , p */);
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return 0;
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}
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smb_makescred(&scred, p, cred);
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error = smbfs_smb_lookup(NULL, NULL, 0, &fattr, &scred);
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error = smbfs_nget(mp, NULL, "TheRooT", 7, &fattr, &vp);
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if (error)
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return error;
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vp->v_flag |= VROOT;
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np = VTOSMB(vp);
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smp->sm_root = np;
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*vpp = vp;
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return 0;
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}
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/*
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* Vfs start routine, a no-op.
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*/
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/* ARGSUSED */
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int
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smbfs_start(mp, flags, p)
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struct mount *mp;
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int flags;
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struct proc *p;
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{
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SMBVDEBUG("flags=%04x\n", flags);
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return 0;
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}
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/*
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* Do operations associated with quotas, not supported
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*/
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/* ARGSUSED */
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int
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smbfs_quotactl(mp, cmd, uid, arg, p)
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struct mount *mp;
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int cmd;
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uid_t uid;
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caddr_t arg;
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struct proc *p;
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{
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SMBVDEBUG("return EOPNOTSUPP\n");
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return EOPNOTSUPP;
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}
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/*ARGSUSED*/
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void
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smbfs_init(/* struct vfsconf *vfsp */void)
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{
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#ifndef NetBSD
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#ifndef SMP
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int name[2];
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int olen, ncpu, plen, error;
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name[0] = CTL_HW;
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name[1] = HW_NCPU;
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error = kernel_sysctl(curproc, name, 2, &ncpu, &olen, NULL, 0, &plen);
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if (error == 0 && ncpu > 1)
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printf("warning: smbfs module compiled without SMP support.");
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#endif
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#endif
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SMBVDEBUG("\n");
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#ifdef SMBFS_USEZONE
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smbfsmount_zone = zinit("SMBFSMOUNT", sizeof(struct smbmount), 0, 0, 1);
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#endif
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smbfs_hash_init();
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smbfs_pbuf_freecnt = nswbuf / 2 + 1;
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SMBVDEBUG("done.\n");
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/* return 0; */
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}
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/*ARGSUSED*/
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#ifndef NetBSD
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int
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smbfs_uninit(struct vfsconf *vfsp)
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{
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smbfs_hash_free();
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SMBVDEBUG("done.\n");
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return 0;
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}
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#else
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void
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smbfs_uninit(void)
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{
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smbfs_hash_free();
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SMBVDEBUG("done.\n");
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}
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#endif
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/*
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* smbfs_statfs call
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*/
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int
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smbfs_statfs(struct mount *mp, struct statfs *sbp, struct proc *p)
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{
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struct smbmount *smp = VFSTOSMBFS(mp);
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struct smbnode *np = smp->sm_root;
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struct smb_share *ssp = smp->sm_share;
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struct smb_cred scred;
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int error = 0;
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SMBVDEBUG("\n");
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if (np == NULL)
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return EINVAL;
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sbp->f_iosize = SSTOVC(ssp)->vc_txmax; /* optimal transfer block size */
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/* sbp->f_spare2 = 0; */ /* placeholder */
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smb_makescred(&scred, p, p->p_ucred);
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if (SMB_DIALECT(SSTOVC(ssp)) >= SMB_DIALECT_LANMAN2_0)
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error = smbfs_smb_statfs2(ssp, sbp, &scred);
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else
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error = smbfs_smb_statfs(ssp, sbp, &scred);
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if (error)
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return error;
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sbp->f_flags = 0; /* copy of mount exported flags */
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if (sbp != &mp->mnt_stat) {
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sbp->f_fsid = mp->mnt_stat.f_fsid; /* file system id */
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sbp->f_owner = mp->mnt_stat.f_owner; /* user that mounted the filesystem */
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sbp->f_type = 0/* mp->mnt_vfc->vfc_typenum */; /* type of filesystem */
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bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN);
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bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
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}
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#ifndef NetBSD
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strncpy(sbp->f_fstypename, mp->mnt_vfc->vfc_name, MFSNAMELEN);
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#else
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strncpy(sbp->f_fstypename, MOUNT_SMBFS, MFSNAMELEN-1);
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#endif
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return 0;
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}
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/*
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* Flush out the buffer cache
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*/
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/* ARGSUSED */
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int
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|
smbfs_sync(mp, waitfor, cred, p)
|
|
struct mount *mp;
|
|
int waitfor;
|
|
struct ucred *cred;
|
|
struct proc *p;
|
|
{
|
|
register struct vnode *vp;
|
|
int error, allerror = 0;
|
|
/*
|
|
* Force stale buffer cache information to be flushed.
|
|
*/
|
|
SMBVDEBUG("\n");
|
|
loop:
|
|
for (vp = mp->mnt_vnodelist.lh_first;
|
|
vp != NULL;
|
|
vp = vp->v_mntvnodes.le_next) {
|
|
/*
|
|
* If the vnode that we are about to sync is no longer
|
|
* associated with this mount point, start over.
|
|
*/
|
|
if (vp->v_mount != mp)
|
|
goto loop;
|
|
#ifndef NetBSD
|
|
#ifndef FB_RELENG3
|
|
if (VOP_ISLOCKED(vp, NULL) || TAILQ_EMPTY(&vp->v_dirtyblkhd) ||
|
|
#else
|
|
if (VOP_ISLOCKED(vp) || TAILQ_EMPTY(&vp->v_dirtyblkhd) ||
|
|
#endif
|
|
waitfor == MNT_LAZY)
|
|
#else
|
|
if (VOP_ISLOCKED(vp) || vp->v_dirtyblkhd.lh_first == NULL)
|
|
#endif
|
|
continue;
|
|
if (vget(vp, LK_EXCLUSIVE/* , p */))
|
|
goto loop;
|
|
error = VOP_FSYNC(vp, cred,
|
|
waitfor == MNT_WAIT ? FSYNC_WAIT : 0, 0, 0, p);
|
|
if (error)
|
|
allerror = error;
|
|
vput(vp);
|
|
}
|
|
return (allerror);
|
|
}
|
|
|
|
#if __FreeBSD_version < 400009
|
|
/*
|
|
* smbfs flat namespace lookup. Unsupported.
|
|
*/
|
|
/* ARGSUSED */
|
|
int smbfs_vget(mp, ino, vpp)
|
|
struct mount *mp;
|
|
ino_t ino;
|
|
struct vnode **vpp;
|
|
{
|
|
return (EOPNOTSUPP);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
int smbfs_fhtovp(mp, fhp, /* nam, */ vpp/* , exflagsp, credanonp */)
|
|
register struct mount *mp;
|
|
struct fid *fhp;
|
|
/* struct sockaddr *nam; */
|
|
struct vnode **vpp;
|
|
/* int *exflagsp; */
|
|
/* struct ucred **credanonp; */
|
|
{
|
|
return (EINVAL);
|
|
}
|
|
|
|
/*
|
|
* Vnode pointer to File handle, should never happen either
|
|
*/
|
|
/* ARGSUSED */
|
|
int
|
|
smbfs_vptofh(vp, fhp)
|
|
struct vnode *vp;
|
|
struct fid *fhp;
|
|
{
|
|
return (EINVAL);
|
|
}
|
|
|
|
#endif /* __FreeBSD_version < 400009 */
|