/* $NetBSD: smb_dev.c,v 1.2 2001/04/13 23:30:30 thorpej 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #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 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 (((u_int)fd) >= fdp->fd_nfiles || (fp = fdp->fd_ofiles[fd]) == NULL || (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; }