538 lines
12 KiB
C
538 lines
12 KiB
C
/* $NetBSD: smb_dev.c,v 1.4 2001/11/13 01:04:47 lukem 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 <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: smb_dev.c,v 1.4 2001/11/13 01:04:47 lukem Exp $");
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#include <netsmb.h>
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#include <sys/param.h>
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#include <sys/ioccom.h>
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#include <sys/malloc.h>
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#include <sys/uio.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/mbuf.h>
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#include <sys/proc.h>
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#include <sys/fcntl.h>
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#include <sys/file.h>
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#include <sys/filedesc.h>
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#include <sys/socket.h>
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#include <sys/select.h>
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#include <sys/poll.h>
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#include <sys/socketvar.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/conf.h>
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#include <net/if.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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#ifndef FB_RELENG3
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#define SMB_GETDEV(dev) ((struct smb_dev*)(dev)->si_drv1)
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#define SMB_CHECKMINOR(dev) do { \
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sdp = SMB_GETDEV(dev); \
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if (sdp == NULL) return ENXIO; \
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} while(0)
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#else
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int numnetsmb = 0;
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#define SMB_GETDEV(dev) (nsmbdevs + minor(dev))
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#define SMB_CHECKMINOR(dev) do { \
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if (minor(dev) >= numnetsmb) \
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return ENXIO; \
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sdp = SMB_GETDEV(dev); \
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} while(0)
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#include <miscfs/specfs/specdev.h>
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static struct smb_dev *nsmbdevs;
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#endif /* !FB_RELENG3 */
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#ifndef NetBSD
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static d_open_t nsmb_dev_open;
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static d_close_t nsmb_dev_close;
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static d_read_t nsmb_dev_read;
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static d_write_t nsmb_dev_write;
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static d_ioctl_t nsmb_dev_ioctl;
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static d_poll_t nsmb_dev_poll;
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#else
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cdev_decl(nsmb_dev_);
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#endif
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#ifdef MODULE_DEPEND
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MODULE_DEPEND(netsmb, libiconv, 1, 1, 1);
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#endif
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#ifdef MODULE_VERSION
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MODULE_VERSION(netsmb, 1);
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#endif
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#ifndef NetBSD
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static int smb_version = NSMB_VERSION;
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#endif
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#ifndef NetBSD
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#ifdef SYSCTL_DECL
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SYSCTL_DECL(_net_smb);
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#endif
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SYSCTL_INT(_net_smb, OID_AUTO, version, CTLFLAG_RD, &smb_version, 0, "");
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MALLOC_DEFINE(M_NSMBDEV, "NETSMBDEV", "NET/SMB device");
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#endif
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/*
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int smb_dev_queue(struct smb_dev *ndp, struct smb_rq *rqp, int prio);
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*/
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#ifndef NetBSD
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static struct cdevsw nsmb_cdevsw = {
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/* open */ nsmb_dev_open,
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/* close */ nsmb_dev_close,
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/* read */ nsmb_dev_read,
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/* write */ nsmb_dev_write,
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/* ioctl */ nsmb_dev_ioctl,
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#ifdef FB_RELENG3
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/* stop */ nostop,
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/* reset */ noreset,
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/* devtotty */ nodevtotty,
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#endif
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/* poll */ nsmb_dev_poll,
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/* mmap */ nommap,
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/* strategy */ nostrategy,
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/* name */ NSMB_NAME,
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#ifndef FB_RELENG3
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/* maj */ NSMB_MAJOR,
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/* dump */ nodump,
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/* psize */ nopsize,
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/* flags */ 0,
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#else
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/* spare */ NULL,
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#endif
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/* bmaj */ -1
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};
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#endif
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void netsmbattach __P((int));
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void
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netsmbattach(num)
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int num;
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{
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if (num <= 0) {
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#ifdef DIAGNOSTIC
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panic("ccdattach: count <= 0");
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#endif
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return;
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}
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nsmbdevs = (struct smb_dev *)malloc(num * sizeof(struct smb_dev),
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M_DEVBUF, M_NOWAIT);
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if (nsmbdevs == NULL) {
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printf("WARNING: no memory for netsmb devices\n");
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return;
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}
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numnetsmb = num;
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if (smb_sm_init()) {
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#ifdef DIAGNOSTIC
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panic("netsmbattach: smb_sm_init failed");
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#endif
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return;
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}
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}
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int
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nsmb_dev_open(dev_t dev, int oflags, int devtype, struct proc *p)
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{
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struct smb_dev *sdp;
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#ifndef FB_RELENG3
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struct ucred *cred = p->p_ucred;
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#endif
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int s;
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sdp = SMB_GETDEV(dev);
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if (sdp && (sdp->sd_flags & NSMBFL_OPEN))
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return EBUSY;
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#ifndef FB_RELENG3
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if (sdp == NULL) {
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MALLOC(sdp, struct smb_dev*, sizeof(*sdp), M_NSMBDEV, M_WAITOK);
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if (sdp == NULL)
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return ENOMEM;
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dev->si_drv1 = (void*)sdp;
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}
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/*
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* XXX: this is just crazy - make a device for an already passed device...
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* someone should take care of it.
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*/
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make_dev(&nsmb_cdevsw, minor(dev), cred->cr_uid, cred->cr_gid, 0700,
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"net/smb%d", lminor(dev));
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#endif
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bzero(sdp, sizeof(*sdp));
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/*
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STAILQ_INIT(&sdp->sd_rqlist);
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STAILQ_INIT(&sdp->sd_rplist);
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bzero(&sdp->sd_pollinfo, sizeof(struct selinfo));
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*/
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s = splnet();
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sdp->sd_level = -1;
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sdp->sd_flags |= NSMBFL_OPEN;
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splx(s);
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return 0;
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}
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int
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nsmb_dev_close(dev_t dev, int flag, int fmt, struct proc *p)
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{
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struct smb_dev *sdp;
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struct smb_conn *scp;
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struct smb_vc *vcp;
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struct smb_share *ssp;
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struct smb_cred scred;
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int s;
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SMB_CHECKMINOR(dev);
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s = splnet();
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if ((sdp->sd_flags & NSMBFL_OPEN) == 0) {
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splx(s);
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return EBADF;
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}
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smb_makescred(&scred, p, NULL);
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ssp = sdp->sd_share;
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if (ssp != NULL) {
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smb_share_rele(ssp, &scred);
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}
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vcp = sdp->sd_vc;
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if (vcp != NULL) {
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smb_vc_rele(vcp, &scred);
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}
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scp = sdp->sd_conn;
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if (scp != NULL)
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smb_conn_rele(scp, &scred);
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/*
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smb_flushq(&sdp->sd_rqlist);
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smb_flushq(&sdp->sd_rplist);
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*/
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#if __FreeBSD_version > 400001
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dev->si_drv1 = NULL;
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free(sdp, M_NSMBDEV);
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destroy_dev(dev);
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#else
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sdp->sd_flags &= ~NSMBFL_OPEN;
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#endif
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splx(s);
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return 0;
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}
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int
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#ifndef NetBSD
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#if __FreeBSD_version >= 300003
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nsmb_dev_ioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
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#else
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nsmb_dev_ioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
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#endif
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#else
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nsmb_dev_ioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
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#endif
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{
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struct smb_dev *sdp;
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struct smb_conn *scp;
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struct smb_vc *vcp;
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struct smb_share *ssp;
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struct smb_cred scred;
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int error = 0;
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SMB_CHECKMINOR(dev);
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if ((sdp->sd_flags & NSMBFL_OPEN) == 0)
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return EBADF;
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smb_makescred(&scred, p, NULL);
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switch (cmd) {
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case SMBIOC_OPENCONN:
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if (sdp->sd_conn)
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return EISCONN;
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error = smb_usr_openconn((struct smbioc_oconn*)data,
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&scred, &scp);
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if (error)
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break;
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sdp->sd_conn = scp;
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smb_conn_unlock(scp, p);
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sdp->sd_level = SMBL_CONN;
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break;
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case SMBIOC_OPENSESSION:
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if (sdp->sd_vc)
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return EISCONN;
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if (sdp->sd_conn == NULL)
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return ENOTCONN;
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error = smb_usr_opensession((struct smbioc_ossn*)data,
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sdp->sd_conn, &scred, &vcp);
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if (error)
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break;
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sdp->sd_vc = vcp;
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smb_vc_unlock(vcp, 0, &scred);
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sdp->sd_level = SMBL_VC;
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break;
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case SMBIOC_OPENSHARE:
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if (sdp->sd_share)
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return EISCONN;
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if (sdp->sd_vc == NULL)
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return ENOTCONN;
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error = smb_usr_openshare(sdp->sd_vc,
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(struct smbioc_oshare*)data, &scred, &ssp);
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if (error)
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break;
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sdp->sd_share = ssp;
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smb_share_unlock(ssp, 0, &scred);
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sdp->sd_level = SMBL_SHARE;
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break;
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case SMBIOC_REQUEST:
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if (sdp->sd_share == NULL)
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return ENOTCONN;
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error = smb_usr_simplerequest(sdp->sd_share,
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(struct smbioc_rq*)data, &scred);
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break;
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case SMBIOC_T2RQ:
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if (sdp->sd_share == NULL)
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return ENOTCONN;
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error = smb_usr_t2request(sdp->sd_share,
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(struct smbioc_t2rq*)data, &scred);
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break;
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case SMBIOC_SETFLAGS: {
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struct smbioc_flags *fl = (struct smbioc_flags*)data;
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int on;
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if (fl->ioc_level == SMBL_VC) {
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if (fl->ioc_mask & SMBV_PERMANENT) {
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on = fl->ioc_flags & SMBV_PERMANENT;
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if ((vcp = sdp->sd_vc) == NULL)
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return ENOTCONN;
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error = smb_vc_get(vcp, &scred);
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if (error)
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break;
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if (on && (vcp->vc_flags & SMBV_PERMANENT) == 0) {
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vcp->vc_flags |= SMBV_PERMANENT;
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tref(VCTOTN(vcp));
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} else if (!on && (vcp->vc_flags & SMBV_PERMANENT)) {
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vcp->vc_flags &= ~SMBV_PERMANENT;
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trele(VCTOTN(vcp));
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}
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smb_vc_put(vcp, &scred);
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} else
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error = EINVAL;
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} else if (fl->ioc_level == SMBL_SHARE) {
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if (fl->ioc_mask & SMBS_PERMANENT) {
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on = fl->ioc_flags & SMBS_PERMANENT;
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if ((ssp = sdp->sd_share) == NULL)
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return ENOTCONN;
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error = smb_share_get(ssp, &scred);
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if (error)
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break;
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if (on && (ssp->ss_flags & SMBS_PERMANENT) == 0) {
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ssp->ss_flags |= SMBS_PERMANENT;
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tref(SSTOTN(ssp));
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} else if (!on && (ssp->ss_flags & SMBS_PERMANENT)) {
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ssp->ss_flags &= ~SMBS_PERMANENT;
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trele(SSTOTN(ssp));
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}
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smb_share_put(ssp, p);
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} else
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error = EINVAL;
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break;
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} else
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error = EINVAL;
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break;
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}
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case SMBIOC_LOOKUP:
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if (sdp->sd_conn || sdp->sd_vc || sdp->sd_share)
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return EISCONN;
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scp = NULL;
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vcp = NULL;
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ssp = NULL;
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error = smb_usr_lookup((struct smbioc_lookup*)data, &scred, &scp, &vcp, &ssp);
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if (error)
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break;
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if (scp) {
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sdp->sd_conn = scp;
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smb_conn_unlock(scp, p);
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sdp->sd_level = SMBL_CONN;
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}
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if (vcp) {
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sdp->sd_vc = vcp;
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smb_vc_unlock(vcp, 0, &scred);
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sdp->sd_level = SMBL_VC;
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}
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if (ssp) {
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sdp->sd_share = ssp;
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smb_share_unlock(ssp, 0, &scred);
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sdp->sd_level = SMBL_SHARE;
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}
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break;
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case SMBIOC_READ: case SMBIOC_WRITE: {
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struct smbioc_rw *rwrq = (struct smbioc_rw*)data;
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struct uio auio;
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struct iovec iov;
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if ((ssp = sdp->sd_share) == NULL)
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return ENOTCONN;
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iov.iov_base = rwrq->ioc_base;
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iov.iov_len = rwrq->ioc_cnt;
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auio.uio_iov = &iov;
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auio.uio_iovcnt = 1;
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auio.uio_offset = rwrq->ioc_offset;
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auio.uio_resid = rwrq->ioc_cnt;
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auio.uio_segflg = UIO_USERSPACE;
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auio.uio_rw = (cmd == SMBIOC_READ) ? UIO_READ : UIO_WRITE;
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auio.uio_procp = p;
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if (cmd == SMBIOC_READ)
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error = smb_read(ssp, rwrq->ioc_fh, &auio, &scred);
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else
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error = smb_write(ssp, rwrq->ioc_fh, &auio, &scred);
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rwrq->ioc_cnt -= auio.uio_resid;
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break;
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}
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default:
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error = ENODEV;
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}
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return error;
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}
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int
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nsmb_dev_read(dev_t dev, struct uio *uio, int flag)
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{
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return EACCES;
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}
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int
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nsmb_dev_write(dev_t dev, struct uio *uio, int flag)
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{
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return EACCES;
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}
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int
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nsmb_dev_poll(dev_t dev, int events, struct proc *p)
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{
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return ENODEV;
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}
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#ifndef NetBSD
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static int
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nsmb_dev_load(module_t mod, int cmd, void *arg)
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{
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int error = 0;
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switch (cmd) {
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case MOD_LOAD:
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error = smb_sm_init();
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if (error)
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break;
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#if __FreeBSD_version > 400001
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cdevsw_add(&nsmb_cdevsw);
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#endif
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printf("netsmb_dev: loaded\n");
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break;
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case MOD_UNLOAD:
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error = smb_sm_done();
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error = 0;
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#if __FreeBSD_version > 400001
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cdevsw_remove(&nsmb_cdevsw);
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#endif
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printf("netsmb_dev: unloaded\n");
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break;
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default:
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error = EINVAL;
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break;
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}
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return error;
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}
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#if __FreeBSD_version > 400000
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DEV_MODULE (dev_netsmb, nsmb_dev_load, 0);
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#else
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CDEV_MODULE(dev_netsmb, NSMB_MAJOR, nsmb_cdevsw, nsmb_dev_load, 0);
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#endif
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#endif
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/*
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* Convert a file descriptor to appropriate smb_share pointer
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*/
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static struct file*
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nsmb_getfp(struct filedesc* fdp, int fd, int flag)
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{
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struct file* fp;
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if ((fp = fd_getfile(fdp, fd)) == NULL)
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return (NULL);
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if ((fp->f_flag & flag) == 0)
|
|
return (NULL);
|
|
|
|
return (fp);
|
|
}
|
|
|
|
int
|
|
smb_dev2share(int fd, int mode, struct smb_cred *scred,
|
|
struct smb_share **sspp)
|
|
{
|
|
struct file *fp;
|
|
struct vnode *vp;
|
|
struct smb_dev *sdp;
|
|
struct smb_share *ssp;
|
|
dev_t dev;
|
|
int error;
|
|
|
|
if ((fp = nsmb_getfp(scred->scr_p->p_fd, fd, FREAD | FWRITE)) == NULL)
|
|
return EBADF;
|
|
vp = (struct vnode*)fp->f_data;
|
|
if (vp == NULL)
|
|
return EBADF;
|
|
dev = vp->v_rdev;
|
|
if (dev == NODEV)
|
|
return EBADF;
|
|
SMB_CHECKMINOR(dev);
|
|
ssp = sdp->sd_share;
|
|
if (ssp == NULL)
|
|
return ENOTCONN;
|
|
error = smb_share_get(ssp, scred);
|
|
if (error)
|
|
return error;
|
|
*sspp = ssp;
|
|
return 0;
|
|
}
|
|
|