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NetBSD/sys/netsmb/smb_dev.c

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