/* * Copyright (c) 2000-2001 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: src/sys/netsmb/smb_dev.c,v 1.2.2.1 2001/05/22 08:32:33 bp Exp $ * $DragonFly: src/sys/netproto/smb/smb_dev.c,v 1.18 2007/05/08 02:31:42 dillon Exp $ */ #include #include #include #include #include #include #include #include /* Must come after sys/malloc.h */ #include #include #include #include #include #include #include #include #include #include #include #include "smb.h" #include "smb_conn.h" #include "smb_subr.h" #include "smb_dev.h" #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) 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; static d_clone_t nsmbclone; DEVFS_DECLARE_CLONE_BITMAP(nsmb); MODULE_VERSION(netsmb, NSMB_VERSION); #define SI_NAMED 0 static int smb_version = NSMB_VERSION; SYSCTL_DECL(_net_smb); SYSCTL_INT(_net_smb, OID_AUTO, version, CTLFLAG_RD, &smb_version, 0, ""); static MALLOC_DEFINE(M_NSMBDEV, "NETSMBDEV", "NET/SMB device"); /* int smb_dev_queue(struct smb_dev *ndp, struct smb_rq *rqp, int prio); */ static struct dev_ops nsmb_ops = { { NSMB_NAME, NSMB_MAJOR, 0 }, .d_open = nsmb_dev_open, .d_close = nsmb_dev_close, .d_read = nsmb_dev_read, .d_write = nsmb_dev_write, .d_ioctl = nsmb_dev_ioctl, .d_poll = nsmb_dev_poll, }; static int nsmb_dev_open(struct dev_open_args *ap) { cdev_t dev = ap->a_head.a_dev; struct smb_dev *sdp; sdp = SMB_GETDEV(dev); if (sdp && (sdp->sd_flags & NSMBFL_OPEN)) return EBUSY; if (sdp == NULL) { sdp = kmalloc(sizeof(*sdp), M_NSMBDEV, M_WAITOK); dev->si_drv1 = (void*)sdp; } /* * XXX: this is just crazy - make a device for an already passed * device... someone should take care of it. */ #if 0 if ((dev->si_flags & SI_NAMED) == 0) { make_dev(&nsmb_ops, minor(dev), ap->a_cred->cr_uid, ap->a_cred->cr_gid, 0700, NSMB_NAME"%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)); */ crit_enter(); sdp->sd_level = -1; sdp->sd_flags |= NSMBFL_OPEN; crit_exit(); return 0; } static int nsmb_dev_close(struct dev_close_args *ap) { cdev_t dev = ap->a_head.a_dev; struct smb_dev *sdp; struct smb_vc *vcp; struct smb_share *ssp; struct smb_cred scred; SMB_CHECKMINOR(dev); crit_enter(); if ((sdp->sd_flags & NSMBFL_OPEN) == 0) { crit_exit(); return EBADF; } smb_makescred(&scred, curthread, 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); /* smb_flushq(&sdp->sd_rqlist); smb_flushq(&sdp->sd_rplist); */ dev->si_drv1 = NULL; kfree(sdp, M_NSMBDEV); crit_exit(); devfs_clone_bitmap_put(&DEVFS_CLONE_BITMAP(nsmb), dev->si_uminor); destroy_dev(dev); return 0; } static int nsmb_dev_ioctl(struct dev_ioctl_args *ap) { cdev_t dev = ap->a_head.a_dev; caddr_t data = ap->a_data; struct smb_dev *sdp; 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, NULL, ap->a_cred); switch (ap->a_cmd) { case SMBIOC_OPENSESSION: if (sdp->sd_vc) return EISCONN; error = smb_usr_opensession((struct smbioc_ossn*)data, &scred, &vcp); if (error) break; sdp->sd_vc = vcp; smb_vc_unlock(vcp, 0); 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); 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, LK_EXCLUSIVE, &scred); if (error) break; if (on && (vcp->obj.co_flags & SMBV_PERMANENT) == 0) { vcp->obj.co_flags |= SMBV_PERMANENT; smb_vc_ref(vcp); } else if (!on && (vcp->obj.co_flags & SMBV_PERMANENT)) { vcp->obj.co_flags &= ~SMBV_PERMANENT; smb_vc_rele(vcp, &scred); } 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, LK_EXCLUSIVE, &scred); if (error) break; if (on && (ssp->obj.co_flags & SMBS_PERMANENT) == 0) { ssp->obj.co_flags |= SMBS_PERMANENT; smb_share_ref(ssp); } else if (!on && (ssp->obj.co_flags & SMBS_PERMANENT)) { ssp->obj.co_flags &= ~SMBS_PERMANENT; smb_share_rele(ssp, &scred); } smb_share_put(ssp, &scred); } else error = EINVAL; break; } else error = EINVAL; break; } case SMBIOC_LOOKUP: if (sdp->sd_vc || sdp->sd_share) return EISCONN; vcp = NULL; ssp = NULL; error = smb_usr_lookup((struct smbioc_lookup*)data, &scred, &vcp, &ssp); if (error) break; if (vcp) { sdp->sd_vc = vcp; smb_vc_unlock(vcp, 0); sdp->sd_level = SMBL_VC; } if (ssp) { sdp->sd_share = ssp; smb_share_unlock(ssp, 0); 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 = (ap->a_cmd == SMBIOC_READ) ? UIO_READ : UIO_WRITE; auio.uio_td = curthread; if (ap->a_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; } static int nsmb_dev_read(struct dev_read_args *ap) { return EACCES; } static int nsmb_dev_write(struct dev_write_args *ap) { return EACCES; } static int nsmb_dev_poll(struct dev_poll_args *ap) { return ENODEV; } static int nsmbclone(struct dev_clone_args *ap) { int unit; unit = devfs_clone_bitmap_get(&DEVFS_CLONE_BITMAP(nsmb), 0); ap->a_dev = make_only_dev(&nsmb_ops, unit, 0, 0, 0600, NSMB_NAME"%d", unit); return 0; } 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; error = smb_iod_init(); if (error) { smb_sm_done(); break; } make_autoclone_dev(&nsmb_ops, &DEVFS_CLONE_BITMAP(nsmb), nsmbclone, 0, 0, 0700, NSMB_NAME); kprintf("netsmb_dev: loaded\n"); break; case MOD_UNLOAD: smb_iod_done(); error = smb_sm_done(); error = 0; devfs_clone_handler_del(NSMB_NAME); dev_ops_remove_all(&nsmb_ops); devfs_clone_bitmap_uninit(&DEVFS_CLONE_BITMAP(nsmb)); kprintf("netsmb_dev: unloaded\n"); break; default: error = EINVAL; break; } return error; } DEV_MODULE (dev_netsmb, nsmb_dev_load, 0); 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; cdev_t dev; int error; KKASSERT(scred->scr_td->td_proc); fp = holdfp(scred->scr_td->td_proc->p_fd, fd, FREAD|FWRITE); if (fp == NULL) return EBADF; vp = (struct vnode*)fp->f_data; if (vp == NULL) { error = EBADF; goto done; } dev = vn_todev(vp); if (dev == NULL) { error = EBADF; goto done; } SMB_CHECKMINOR(dev); ssp = sdp->sd_share; if (ssp == NULL) { error = ENOTCONN; goto done; } error = smb_share_get(ssp, LK_EXCLUSIVE, scred); if (error == 0) *sspp = ssp; done: fdrop(fp); return (error); }