/* * 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. * * $Id: smb_dev.c,v 1.13 2003/08/19 01:34:17 lindak Exp $ */ #include #include #include #include #include #include #include #include #include #ifdef APPLE #include /* XXX xnu needs to install poll.h into kernel framework! */ #endif #include #include #include #include #include #include #include #include #include #ifdef APPLE #include #endif #include #include #include #include #ifdef APPLE /* * Userland code loops through minor #s 0 to 1023, looking for one which opens. * Intially we create minor 0 and leave it for anyone. Minor zero will never * actually get used - opening triggers creation of another (but private) minor, * which userland code will get to and mark busy. */ #define SMBMINORS 1024 struct smb_dev * smb_dtab[SMBMINORS]; int smb_minor_hiwat = -1; #define SMB_GETDEV(dev) (smb_dtab[minor(dev)]) #else #define SMB_GETDEV(dev) ((struct smb_dev*)(dev)->si_drv1) #endif /* APPLE */ #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_ioctl_t nsmb_dev_ioctl; #ifdef MODULE_DEPEND MODULE_DEPEND(netsmb, libiconv, 1, 1, 1); #endif #ifdef MODULE_VERSION MODULE_VERSION(netsmb, NSMB_VERSION); #endif #ifndef SI_NAMED #define SI_NAMED 0 #endif static int smb_version = NSMB_VERSION; #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"); /* int smb_dev_queue(struct smb_dev *ndp, struct smb_rq *rqp, int prio); */ static struct cdevsw nsmb_cdevsw = { nsmb_dev_open, nsmb_dev_close, #ifdef APPLE /* read */ eno_rdwrt, /* write */ eno_rdwrt, nsmb_dev_ioctl, eno_stop, eno_reset, 0, eno_select, eno_mmap, eno_strat, eno_getc, eno_putc, 0 #else nsmb_dev_ioctl, NSMB_NAME, NSMB_MAJOR, #endif }; #ifdef APPLE int smb_major = -1; int smb_dev_lock_init = 0; struct lock__bsd__ smb_dev_lock; static __inline__ int SMB_DEV_LOCK() { return (lockmgr(&smb_dev_lock, LK_EXCLUSIVE, NULL, current_proc())); } static __inline__ int SMB_DEV_UNLOCK() { return (lockmgr(&smb_dev_lock, LK_RELEASE, NULL, current_proc())); } #endif static int #ifdef APPLE nsmb_dev_open_nolock(dev_t dev, int oflags, int devtype, struct proc *p) #else nsmb_dev_open(dev_t dev, int oflags, int devtype, struct proc *p) #endif /* APPLE */ { #pragma unused(oflags, devtype) struct smb_dev *sdp; struct ucred *cred = p->p_ucred; int s; sdp = SMB_GETDEV(dev); if (sdp && (sdp->sd_flags & NSMBFL_OPEN)) return EBUSY; #ifdef APPLE if (!sdp || minor(dev) == 0) { int avail_minor; for (avail_minor = 1; avail_minor < SMBMINORS; avail_minor++) if (!SMB_GETDEV(avail_minor)) break; if (avail_minor >= SMBMINORS) panic("smb: %d minor devices!", avail_minor); sdp = malloc(sizeof(*sdp), M_NSMBDEV, M_WAITOK); bzero(sdp, sizeof(*sdp)); dev = makedev(smb_major, avail_minor); sdp->sd_devfs = devfs_make_node(dev, DEVFS_CHAR, cred->cr_uid, cred->cr_gid, 0700, "nsmb%x", avail_minor); if (!sdp->sd_devfs) panic("smb: devfs_make_node 0700"); if (avail_minor > smb_minor_hiwat) smb_minor_hiwat = avail_minor; SMB_GETDEV(dev) = sdp; return EBUSY; } #else if (sdp == NULL) { sdp = malloc(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 ((dev->si_flags & SI_NAMED) == 0) make_dev(&nsmb_cdevsw, minor(dev), cred->cr_uid, cred->cr_gid, 0700, NSMB_NAME"%d", lminor(dev)); bzero(sdp, sizeof(*sdp)); #endif /* STAILQ_INIT(&sdp->sd_rqlist); STAILQ_INIT(&sdp->sd_rplist); bzero(&sdp->sd_pollinfo, sizeof(struct selinfo)); */ s = splimp(); sdp->sd_level = -1; sdp->sd_flags |= NSMBFL_OPEN; splx(s); return 0; } #ifdef APPLE static int nsmb_dev_open(dev_t dev, int oflags, int devtype, struct proc *p) { int error; SMB_DEV_LOCK(); error = nsmb_dev_open_nolock(dev, oflags, devtype, p); SMB_DEV_UNLOCK(); return (error); } #endif /* APPLE */ static int #ifdef APPLE nsmb_dev_close_nolock(dev_t dev, int flag, int fmt, struct proc *p) #else nsmb_dev_close(dev_t dev, int flag, int fmt, struct proc *p) #endif /* APPLE */ { #pragma unused(flag, fmt) struct smb_dev *sdp; struct smb_vc *vcp; struct smb_share *ssp; struct smb_cred scred; int s; SMB_CHECKMINOR(dev); s = splimp(); 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); /* smb_flushq(&sdp->sd_rqlist); smb_flushq(&sdp->sd_rplist); */ #ifdef APPLE devfs_remove(sdp->sd_devfs); /* first disallow opens */ SMB_GETDEV(dev) = NULL; free(sdp, M_NSMBDEV); #else #if __FreeBSD_version > 400001 dev->si_drv1 = NULL; free(sdp, M_NSMBDEV); destroy_dev(dev); #else sdp->sd_flags &= ~NSMBFL_OPEN; #endif #endif splx(s); return 0; } #ifdef APPLE static int nsmb_dev_close(dev_t dev, int flag, int fmt, struct proc *p) { int error; SMB_DEV_LOCK(); error = nsmb_dev_close_nolock(dev, flag, fmt, p); SMB_DEV_UNLOCK(); return (error); } #endif /* APPLE */ static int nsmb_dev_ioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) { #pragma unused(flag) 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, p, NULL); switch (cmd) { #ifndef APPLE 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, p); 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, p); sdp->sd_level = SMBL_SHARE; break; #endif /* !APPLE */ 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; #ifndef APPLE 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, p); } 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, p); } 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, p); sdp->sd_level = SMBL_VC; } if (ssp) { sdp->sd_share = ssp; smb_share_unlock(ssp, 0, p); sdp->sd_level = SMBL_SHARE; } break; #endif /* !APPLE */ case SMBIOC_NEGOTIATE: if (sdp->sd_vc || sdp->sd_share) return EISCONN; vcp = NULL; ssp = NULL; error = smb_usr_negotiate((struct smbioc_lookup*)data, &scred, &vcp, &ssp); if (error) break; if (vcp) { sdp->sd_vc = vcp; smb_vc_unlock(vcp, 0, p); sdp->sd_level = SMBL_VC; } if (ssp) { sdp->sd_share = ssp; smb_share_unlock(ssp, 0, p); sdp->sd_level = SMBL_SHARE; } break; case SMBIOC_SSNSETUP: if (sdp->sd_share) return EISCONN; if (!sdp->sd_vc) return ENOTCONN; vcp = sdp->sd_vc; ssp = NULL; error = smb_usr_ssnsetup((struct smbioc_lookup*)data, &scred, vcp, &ssp); if (error) break; smb_vc_put(vcp, &scred); if (ssp) { sdp->sd_share = ssp; smb_share_unlock(ssp, 0, p); sdp->sd_level = SMBL_SHARE; } break; case SMBIOC_TDIS: if (sdp->sd_share == NULL) return ENOTCONN; smb_share_rele(sdp->sd_share, &scred); sdp->sd_share = NULL; sdp->sd_level = SMBL_VC; break; case SMBIOC_TCON: if (sdp->sd_share) return EISCONN; if (!sdp->sd_vc) return ENOTCONN; vcp = sdp->sd_vc; ssp = NULL; error = smb_usr_tcon((struct smbioc_lookup*)data, &scred, vcp, &ssp); if (error) break; smb_vc_put(vcp, &scred); if (ssp) { sdp->sd_share = ssp; smb_share_unlock(ssp, 0, p); sdp->sd_level = SMBL_SHARE; } break; #ifndef APPLE 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; /* * XXX use page cache for coherence? */ if (cmd == SMBIOC_READ) error = smb_read(ssp, rwrq->ioc_fh, &auio, &scred); else error = smb_write(ssp, rwrq->ioc_fh, &auio, &scred, SMBWRTTIMO); rwrq->ioc_cnt -= auio.uio_resid; break; } #endif /* !APPLE */ default: error = ENODEV; } return error; } PRIVSYM #ifndef APPLE /* so we can call from smbfs_module_start in smbfs_vfsops.c */ static #endif int nsmb_dev_load(module_t mod, int cmd, void *arg) { #pragma unused(mod, arg) int error = 0; switch (cmd) { case MOD_LOAD: #ifdef APPLE if (!smb_dev_lock_init) lockinit(&smb_dev_lock, PINOD, "smb_dev", 0, 0); smb_dev_lock_init++; SMB_DEV_LOCK(); #endif error = smb_checksmp(); if (error) break; error = smb_sm_init(); if (error) break; error = smb_iod_init(); if (error) { smb_sm_done(); break; } #if __FreeBSD_version > 400001 cdevsw_add(&nsmb_cdevsw); #endif #ifdef APPLE if (smb_major == -1) { dev_t dev; struct smb_dev *sdp; smb_major = cdevsw_add(-1, &nsmb_cdevsw); if (smb_major == -1) panic("smb: cdevsw_add"); sdp = malloc(sizeof(*sdp), M_NSMBDEV, M_WAITOK); bzero(sdp, sizeof(*sdp)); dev = makedev(smb_major, 0); sdp->sd_devfs = devfs_make_node(dev, DEVFS_CHAR, UID_ROOT, GID_WHEEL, 0666, "nsmb0"); if (!sdp->sd_devfs) panic("smb: devfs_make_node 0666"); smb_minor_hiwat = 0; SMB_GETDEV(dev) = sdp; } SMB_DEV_UNLOCK(); #endif printf("netsmb_dev: loaded\n"); break; case MOD_UNLOAD: #ifdef APPLE SMB_DEV_LOCK(); #endif smb_iod_done(); error = smb_sm_done(); error = 0; #if __FreeBSD_version > 400001 cdevsw_remove(&nsmb_cdevsw); #endif #ifdef APPLE if (smb_major != -1) { int m; struct smb_dev *sdp; for (m = 0; m <= smb_minor_hiwat; m++) if ((sdp = SMB_GETDEV(m))) { SMB_GETDEV(m) = 0; if (sdp->sd_devfs) devfs_remove(sdp->sd_devfs); free(sdp, M_NSMBDEV); } smb_minor_hiwat = -1; smb_major = cdevsw_remove(smb_major, &nsmb_cdevsw); if (smb_major == -1) panic("smb: cdevsw_remove failed"); smb_major = -1; } SMB_DEV_UNLOCK(); #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 /* * 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 (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) { #pragma unused(mode) struct file *fp; struct vnode *vp; struct smb_dev *sdp; struct smb_share *ssp; dev_t dev; 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 = vn_todev(vp); if (dev == NODEV) return EBADF; SMB_CHECKMINOR(dev); ssp = sdp->sd_share; if (ssp == NULL) return ENOTCONN; /* * The share is already locked and referenced by the TCON ioctl * We NULL to hand off share to caller (mount) * This allows further ioctls against connection, for instance * another tree connect and mount, in the automounter case */ sdp->sd_share = NULL; *sspp = ssp; return 0; }