/* * Public interface for creating an IP stream with shared conn_t * Handles multiple callers in parallel by using conn_lock. * Note that we allocate the helper stream without any locks, which means * we might need to free it if we had two threads doing this concurrently * for the conn_t. */ int ip_create_helper_stream(conn_t *connp, ldi_ident_t li) { ip_helper_stream_info_t *helper; int error; int ret; ASSERT(!servicing_interrupt()); if (connp->conn_helper_info != NULL) { /* Already allocated */ return (0); } error = 0; helper = kmem_alloc(sizeof (ip_helper_stream_info_t), KM_SLEEP); /* * open ip device via the layered interface. * pass in kcred as some threads do not have the * priviledge to open /dev/ip and the check in * secpolicy_spec_open() will fail the open */ error = ldi_open_by_name((connp->conn_family == AF_INET6 ? DEV_IP6 : DEV_IP), IP_HELPER_STR, kcred, &helper->iphs_handle, li); if (error != 0) { kmem_free(helper, sizeof (ip_helper_stream_info_t)); return (error); } /* Make sure we are the only one */ mutex_enter(&connp->conn_lock); if (connp->conn_helper_info != NULL) { /* Some other thread won - discard this stream */ mutex_exit(&connp->conn_lock); (void) ldi_close(helper->iphs_handle, 0, kcred); kmem_free(helper, sizeof (ip_helper_stream_info_t)); return (0); } connp->conn_helper_info = helper; /* * Share connp with the helper stream. We hold conn_lock across this * operation. */ error = ldi_ioctl(helper->iphs_handle, SIOCSQPTR, (intptr_t)connp, FKIOCTL, kcred, &ret); if (error != 0) { /* * Passing in a zero flag indicates that an error * occured and stream was not shared */ (void) ldi_close(helper->iphs_handle, 0, kcred); kmem_free(helper, sizeof (ip_helper_stream_info_t)); connp->conn_helper_info = NULL; } mutex_exit(&connp->conn_lock); return (error); }
static void vdev_disk_close(vdev_t *vd) { vdev_disk_t *dvd = vd->vdev_tsd; vdev_disk_ldi_cb_t *lcb; if (vd->vdev_reopening || dvd == NULL) return; if (dvd->vd_minor != NULL) { ddi_devid_str_free(dvd->vd_minor); dvd->vd_minor = NULL; } if (dvd->vd_devid != NULL) { ddi_devid_free(dvd->vd_devid); dvd->vd_devid = NULL; } if (dvd->vd_lh != NULL) { (void) ldi_close(dvd->vd_lh, spa_mode(vd->vdev_spa), kcred); dvd->vd_lh = NULL; } vd->vdev_delayed_close = B_FALSE; /* * If we closed the LDI handle due to an offline notify from LDI, * don't free vd->vdev_tsd or unregister the callbacks here; * the offline finalize callback or a reopen will take care of it. */ if (dvd->vd_ldi_offline) return; vdev_disk_free(vd); }
static int _raw_close(dev_t fd) { struct cred *cred; raw_dev_t *cdi; int rc; int cd; mutex_enter(&_nsc_raw_lock); if ((cd = __raw_get_cd(fd)) == -1 || !_nsc_raw_files[cd].in_use) { mutex_exit(&_nsc_raw_lock); return (EIO); } cdi = &_nsc_raw_files[cd]; cred = ddi_get_cred(); rc = ldi_close(cdi->lh, FREAD|FWRITE, cred); if (rc != 0) { mutex_exit(&_nsc_raw_lock); return (rc); } kmem_free(cdi->path, cdi->plen); bzero(cdi, sizeof (*cdi)); mutex_exit(&_nsc_raw_lock); return (0); }
/*ARGSUSED*/ static int lx_ptm_close(dev_t dev, int flag, int otyp, cred_t *credp) { ldi_handle_t lh; major_t maj; minor_t min, lastmin; uint_t index; int err; index = DEVT_TO_INDEX(dev); /* * we must cleanup all the state associated with this major/minor * terminal pair before actually closing the ptm master device. * this is required because once the close of the ptm device is * complete major/minor terminal pair is immediatly available for * re-use in any zone. */ /* free up our saved reference for this layered handle */ lh = lx_ptm_lh_remove(index); /* unconfigure autopush for the associated terminal slave device */ maj = lps.lps_pts_major; min = index; lastmin = 0; do { /* * we loop here because we don't want to release this ptm * node if autopush can't be disabled on the associated * slave device because then bad things could happen if * another brand were to get this terminal allocated * to them. * * XXX should we ever give up? */ err = kstr_autopush(CLR_AUTOPUSH, &maj, &min, &lastmin, 0, NULL); } while (err != 0); err = ldi_close(lh, flag, credp); /* * note that we don't have to bother with changing the permissions * on the associated slave device here. the reason is that no one * can actually open the device untill it's associated master * device is re-opened, which will result in the permissions on * it being reset. */ return (err); }
int rds_close_transport_driver() { ASSERT(rds_transport_ops != NULL); rw_enter(&rds_transport_lock, RW_WRITER); if (rds_transport_handle != NULL) { rds_transport_ops->rds_transport_close_ib(); (void) ldi_close(rds_transport_handle, FNDELAY, kcred); rds_transport_handle = NULL; } rw_exit(&rds_transport_lock); return (0); }
/* Not static so zfs_osx.cpp can call it on device removal */ void vdev_disk_close(vdev_t *vd) { vdev_disk_t *dvd = vd->vdev_tsd; if (vd->vdev_reopening || dvd == NULL) return; #ifdef illumos if (dvd->vd_minor != NULL) { ddi_devid_str_free(dvd->vd_minor); dvd->vd_minor = NULL; } if (dvd->vd_devid != NULL) { ddi_devid_free(dvd->vd_devid); dvd->vd_devid = NULL; } if (dvd->vd_lh != NULL) { (void) ldi_close(dvd->vd_lh, spa_mode(vd->vdev_spa), kcred); dvd->vd_lh = NULL; } #endif #ifdef __APPLE__ if (dvd->vd_devvp != NULL) { /* vnode_close() can stall during removal, so clear vd_devvp now */ struct vnode *vp = dvd->vd_devvp; dvd->vd_devvp = NULL; (void) thread_create(NULL, 0, vdev_disk_close_thread, vp, 0, &p0, TS_RUN, minclsyspri); } #endif vd->vdev_delayed_close = B_FALSE; /* * If we closed the LDI handle due to an offline notify from LDI, * don't free vd->vdev_tsd or unregister the callbacks here; * the offline finalize callback or a reopen will take care of it. */ if (dvd->vd_offline) return; vdev_disk_free(vd); }
/* * Public interface for freeing IP helper stream * Caller must ensure no concurrent use of the conn_t, which is normally * done by calling this from the close routine when the conn_t is quiesced. */ void ip_free_helper_stream(conn_t *connp) { ASSERT(!servicing_interrupt()); if (connp->conn_helper_info == NULL) return; ASSERT(connp->conn_helper_info->iphs_handle != NULL); connp->conn_helper_info->iphs_rq->q_ptr = connp->conn_helper_info->iphs_wq->q_ptr = connp->conn_helper_info->iphs_minfo; (void) ldi_close(connp->conn_helper_info->iphs_handle, IP_HELPER_STR, kcred); kmem_free(connp->conn_helper_info, sizeof (ip_helper_stream_info_t)); connp->conn_helper_info = NULL; }
static void vdev_disk_close(vdev_t *vd) { vdev_disk_t *dvd = vd->vdev_tsd; if (vd->vdev_reopening || dvd == NULL) return; if (dvd->vd_minor != NULL) ddi_devid_str_free(dvd->vd_minor); if (dvd->vd_devid != NULL) ddi_devid_free(dvd->vd_devid); if (dvd->vd_lh != NULL) (void) ldi_close(dvd->vd_lh, spa_mode(vd->vdev_spa), kcred); vd->vdev_delayed_close = B_FALSE; kmem_free(dvd, sizeof (vdev_disk_t)); vd->vdev_tsd = NULL; }
int rds_open_transport_driver() { int ret = 0; rw_enter(&rds_transport_lock, RW_WRITER); if (rds_transport_handle != NULL) { /* * Someone beat us to it. */ goto done; } if (ibt_hw_is_present() == 0) { ret = ENODEV; goto done; } if (rds_li == NULL) { ret = EPROTONOSUPPORT; goto done; } ret = ldi_open_by_name("/devices/ib/rdsib@0:rdsib", FREAD | FWRITE, kcred, &rds_transport_handle, rds_li); if (ret != 0) { ret = EPROTONOSUPPORT; rds_transport_handle = NULL; goto done; } ret = rds_transport_ops->rds_transport_open_ib(); if (ret != 0) { (void) ldi_close(rds_transport_handle, FNDELAY, kcred); rds_transport_handle = NULL; } done: rw_exit(&rds_transport_lock); return (ret); }
static void vdev_disk_close_impl(vdev_t *vd, boolean_t ldi_offline) { vdev_disk_t *dvd; rw_enter(&vd->vdev_tsd_lock, RW_WRITER); dvd = vd->vdev_tsd; if (vd->vdev_reopening || dvd == NULL) goto out; if (dvd->vd_minor != NULL) { ddi_devid_str_free(dvd->vd_minor); dvd->vd_minor = NULL; } if (dvd->vd_devid != NULL) { ddi_devid_free(dvd->vd_devid); dvd->vd_devid = NULL; } if (dvd->vd_lh != NULL) { (void) ldi_close(dvd->vd_lh, spa_mode(vd->vdev_spa), kcred); dvd->vd_lh = NULL; } vd->vdev_delayed_close = B_FALSE; /* * If we closed the LDI handle due to an offline notify from LDI, * don't free vd->vdev_tsd or unregister the callbacks here; * the offline finalize callback or a reopen will take care of it. */ if (!ldi_offline) vdev_disk_free_locked(vd); out: rw_exit(&vd->vdev_tsd_lock); }
/* ARGSUSED */ static int _raw_open(char *path, int flag, blind_t *cdp, void *iodev) { struct cred *cred; raw_dev_t *cdi = NULL; char *spath; dev_t rdev; int rc, cd, the_cd; int plen; ldi_ident_t li; if (proc_nskernd == NULL) { cmn_err(CE_WARN, "nskern: no nskernd daemon running!"); return (ENXIO); } if (_nsc_raw_maxdevs == 0) { cmn_err(CE_WARN, "nskern: _raw_open() before _nsc_init_raw()!"); return (ENXIO); } plen = strlen(path) + 1; spath = kmem_alloc(plen, KM_SLEEP); if (spath == NULL) { cmn_err(CE_WARN, "nskern: unable to alloc memory in _raw_open()"); return (ENOMEM); } (void) strcpy(spath, path); /* * Lookup the vnode to extract the dev_t info, * then release the vnode. */ if ((rdev = ldi_get_dev_t_from_path(path)) == 0) { kmem_free(spath, plen); return (ENXIO); } /* * See if this device is already opened */ the_cd = -1; mutex_enter(&_nsc_raw_lock); for (cd = 0, cdi = _nsc_raw_files; cd < fd_hwm; cd++, cdi++) { if (rdev == cdi->rdev) { the_cd = cd; break; } else if (the_cd == -1 && !cdi->in_use) the_cd = cd; } if (the_cd == -1) { if (fd_hwm < _nsc_raw_maxdevs) the_cd = fd_hwm++; else { mutex_exit(&_nsc_raw_lock); cmn_err(CE_WARN, "_raw_open: too many open devices"); kmem_free(spath, plen); return (EIO); } } cdi = &_nsc_raw_files[the_cd]; if (cdi->in_use) { /* already set up - just return */ mutex_exit(&_nsc_raw_lock); *cdp = (blind_t)cdi->rdev; kmem_free(spath, plen); return (0); } cdi->partition = -1; cdi->size = (uint64_t)0; cdi->rdev = rdev; cdi->path = spath; cdi->plen = plen; cred = ddi_get_cred(); /* * Layered driver * * We use xxx_open_by_dev() since this guarantees that a * specfs vnode is created and used, not a standard filesystem * vnode. This is necessary since in a cluster PXFS will block * vnode operations during switchovers, so we have to use the * underlying specfs vnode not the PXFS vnode. * */ if ((rc = ldi_ident_from_dev(cdi->rdev, &li)) == 0) { rc = ldi_open_by_dev(&cdi->rdev, OTYP_BLK, FREAD|FWRITE, cred, &cdi->lh, li); } if (rc != 0) { cdi->lh = NULL; goto failed; } /* * grab the major_t related information */ cdi->major = _raw_get_maj_info(getmajor(rdev)); if (cdi->major == NULL) { /* Out of memory */ cmn_err(CE_WARN, "_raw_open: cannot alloc major number structure"); rc = ENOMEM; goto failed; } *cdp = (blind_t)cdi->rdev; cdi->in_use++; mutex_exit(&_nsc_raw_lock); return (rc); failed: if (cdi->lh) (void) ldi_close(cdi->lh, FWRITE|FREAD, cred); bzero(cdi, sizeof (*cdi)); mutex_exit(&_nsc_raw_lock); kmem_free(spath, plen); return (rc); }
static int vdev_disk_open(vdev_t *vd, uint64_t *psize, uint64_t *max_psize, uint64_t *ashift) { spa_t *spa = vd->vdev_spa; vdev_disk_t *dvd = vd->vdev_tsd; ldi_ev_cookie_t ecookie; vdev_disk_ldi_cb_t *lcb; union { struct dk_minfo_ext ude; struct dk_minfo ud; } dks; struct dk_minfo_ext *dkmext = &dks.ude; struct dk_minfo *dkm = &dks.ud; int error; /* XXX Apple - must leave devid unchanged */ #ifdef illumos dev_t dev; int otyp; boolean_t validate_devid = B_FALSE; ddi_devid_t devid; #endif uint64_t capacity = 0, blksz = 0, pbsize; #ifdef __APPLE__ int isssd; #endif /* * We must have a pathname, and it must be absolute. */ if (vd->vdev_path == NULL || vd->vdev_path[0] != '/') { vd->vdev_stat.vs_aux = VDEV_AUX_BAD_LABEL; return (SET_ERROR(EINVAL)); } /* * Reopen the device if it's not currently open. Otherwise, * just update the physical size of the device. */ if (dvd != NULL) { if (dvd->vd_ldi_offline && dvd->vd_lh == NULL) { /* * If we are opening a device in its offline notify * context, the LDI handle was just closed. Clean * up the LDI event callbacks and free vd->vdev_tsd. */ vdev_disk_free(vd); } else { ASSERT(vd->vdev_reopening); goto skip_open; } } /* * Create vd->vdev_tsd. */ vdev_disk_alloc(vd); dvd = vd->vdev_tsd; /* * When opening a disk device, we want to preserve the user's original * intent. We always want to open the device by the path the user gave * us, even if it is one of multiple paths to the same device. But we * also want to be able to survive disks being removed/recabled. * Therefore the sequence of opening devices is: * * 1. Try opening the device by path. For legacy pools without the * 'whole_disk' property, attempt to fix the path by appending 's0'. * * 2. If the devid of the device matches the stored value, return * success. * * 3. Otherwise, the device may have moved. Try opening the device * by the devid instead. */ /* * XXX We must not set or modify the devid as this check would prevent * import on Solaris/illumos. */ #ifdef illumos if (vd->vdev_devid != NULL) { if (ddi_devid_str_decode(vd->vdev_devid, &dvd->vd_devid, &dvd->vd_minor) != 0) { vd->vdev_stat.vs_aux = VDEV_AUX_BAD_LABEL; vdev_dbgmsg(vd, "vdev_disk_open: invalid " "vdev_devid '%s'", vd->vdev_devid); return (SET_ERROR(EINVAL)); } } #endif error = EINVAL; /* presume failure */ if (vd->vdev_path != NULL) { /* * XXX This assumes that if vdev_path refers to a device path /dev/dsk/cNtNdN, * then the whole disk can be found by slice 0 at path /dev/dsk/cNtNdNs0. */ #ifdef illumos if (vd->vdev_wholedisk == -1ULL) { size_t len = strlen(vd->vdev_path) + 3; char *buf = kmem_alloc(len, KM_SLEEP); (void) snprintf(buf, len, "%ss0", vd->vdev_path); error = ldi_open_by_name(buf, spa_mode(spa), kcred, &dvd->vd_lh, zfs_li); if (error == 0) { spa_strfree(vd->vdev_path); vd->vdev_path = buf; vd->vdev_wholedisk = 1ULL; } else { kmem_free(buf, len); } } #endif /* * If we have not yet opened the device, try to open it by the * specified path. */ if (error != 0) { error = ldi_open_by_name(vd->vdev_path, spa_mode(spa), kcred, &dvd->vd_lh, zfs_li); } /* XXX Apple - must leave devid unchanged */ #ifdef illumos /* * Compare the devid to the stored value. */ if (error == 0 && vd->vdev_devid != NULL && ldi_get_devid(dvd->vd_lh, &devid) == 0) { if (ddi_devid_compare(devid, dvd->vd_devid) != 0) { error = SET_ERROR(EINVAL); (void) ldi_close(dvd->vd_lh, spa_mode(spa), kcred); dvd->vd_lh = NULL; } ddi_devid_free(devid); } #endif /* * If we succeeded in opening the device, but 'vdev_wholedisk' * is not yet set, then this must be a slice. */ if (error == 0 && vd->vdev_wholedisk == -1ULL) vd->vdev_wholedisk = 0; } /* XXX Apple - must leave devid unchanged */ #ifdef illumos /* * If we were unable to open by path, or the devid check fails, open by * devid instead. */ if (error != 0 && vd->vdev_devid != NULL) { error = ldi_open_by_devid(dvd->vd_devid, dvd->vd_minor, spa_mode(spa), kcred, &dvd->vd_lh, zfs_li); } #endif /* * If all else fails, then try opening by physical path (if available) * or the logical path (if we failed due to the devid check). While not * as reliable as the devid, this will give us something, and the higher * level vdev validation will prevent us from opening the wrong device. */ if (error) { /* XXX Apple - must leave devid unchanged */ #ifdef illumos if (vd->vdev_devid != NULL) validate_devid = B_TRUE; #endif /* XXX Apple to do - make ddi_ interface for this, using IORegistry path */ #ifdef illumos if (vd->vdev_physpath != NULL && (dev = ddi_pathname_to_dev_t(vd->vdev_physpath)) != NODEV) error = ldi_open_by_dev(&dev, OTYP_BLK, spa_mode(spa), kcred, &dvd->vd_lh, zfs_li); #endif /* * Note that we don't support the legacy auto-wholedisk support * as above. This hasn't been used in a very long time and we * don't need to propagate its oddities to this edge condition. */ if (error && vd->vdev_path != NULL) error = ldi_open_by_name(vd->vdev_path, spa_mode(spa), kcred, &dvd->vd_lh, zfs_li); } if (error) { vd->vdev_stat.vs_aux = VDEV_AUX_OPEN_FAILED; vdev_dbgmsg(vd, "vdev_disk_open: failed to open [error=%d]", error); return (error); } /* * XXX Apple - We must not set or modify the devid. Import on Solaris/illumos * expects a valid devid and fails if it cannot be decoded. */ #ifdef illumos /* * Now that the device has been successfully opened, update the devid * if necessary. */ if (validate_devid && spa_writeable(spa) && ldi_get_devid(dvd->vd_lh, &devid) == 0) { if (ddi_devid_compare(devid, dvd->vd_devid) != 0) { char *vd_devid; vd_devid = ddi_devid_str_encode(devid, dvd->vd_minor); vdev_dbgmsg(vd, "vdev_disk_open: update devid from " "'%s' to '%s'", vd->vdev_devid, vd_devid); spa_strfree(vd->vdev_devid); vd->vdev_devid = spa_strdup(vd_devid); ddi_devid_str_free(vd_devid); } ddi_devid_free(devid); } #endif /* XXX Apple to do, needs IORegistry physpath interface */ #ifdef illumos /* * Once a device is opened, verify that the physical device path (if * available) is up to date. */ if (ldi_get_dev(dvd->vd_lh, &dev) == 0 && ldi_get_otyp(dvd->vd_lh, &otyp) == 0) { char *physpath, *minorname; physpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); minorname = NULL; if (ddi_dev_pathname(dev, otyp, physpath) == 0 && ldi_get_minor_name(dvd->vd_lh, &minorname) == 0 && (vd->vdev_physpath == NULL || strcmp(vd->vdev_physpath, physpath) != 0)) { if (vd->vdev_physpath) spa_strfree(vd->vdev_physpath); (void) strlcat(physpath, ":", MAXPATHLEN); (void) strlcat(physpath, minorname, MAXPATHLEN); vd->vdev_physpath = spa_strdup(physpath); } if (minorname) kmem_free(minorname, strlen(minorname) + 1); kmem_free(physpath, MAXPATHLEN); } #endif /* * Register callbacks for the LDI offline event. */ if (ldi_ev_get_cookie(dvd->vd_lh, LDI_EV_OFFLINE, &ecookie) == LDI_EV_SUCCESS) { lcb = kmem_zalloc(sizeof (vdev_disk_ldi_cb_t), KM_SLEEP); list_insert_tail(&dvd->vd_ldi_cbs, lcb); (void) ldi_ev_register_callbacks(dvd->vd_lh, ecookie, &vdev_disk_off_callb, (void *) vd, &lcb->lcb_id); } /* XXX Apple to do - we could support the degrade event, or just no-op */ #ifdef illumos /* * Register callbacks for the LDI degrade event. */ if (ldi_ev_get_cookie(dvd->vd_lh, LDI_EV_DEGRADE, &ecookie) == LDI_EV_SUCCESS) { lcb = kmem_zalloc(sizeof (vdev_disk_ldi_cb_t), KM_SLEEP); list_insert_tail(&dvd->vd_ldi_cbs, lcb); (void) ldi_ev_register_callbacks(dvd->vd_lh, ecookie, &vdev_disk_dgrd_callb, (void *) vd, &lcb->lcb_id); } #endif #if 0 int len = MAXPATHLEN; if (vn_getpath(devvp, dvd->vd_readlinkname, &len) == 0) { dprintf("ZFS: '%s' resolved name is '%s'\n", vd->vdev_path, dvd->vd_readlinkname); } else { dvd->vd_readlinkname[0] = 0; } #endif skip_open: /* * Determine the actual size of the device. */ if (ldi_get_size(dvd->vd_lh, psize) != 0) { vd->vdev_stat.vs_aux = VDEV_AUX_OPEN_FAILED; vdev_dbgmsg(vd, "vdev_disk_open: failed to get size"); return (SET_ERROR(EINVAL)); } *max_psize = *psize; /* * Determine the device's minimum transfer size. * If the ioctl isn't supported, assume DEV_BSIZE. */ if ((error = ldi_ioctl(dvd->vd_lh, DKIOCGMEDIAINFOEXT, (intptr_t)dkmext, FKIOCTL, kcred, NULL)) == 0) { capacity = dkmext->dki_capacity - 1; blksz = dkmext->dki_lbsize; pbsize = dkmext->dki_pbsize; } else if ((error = ldi_ioctl(dvd->vd_lh, DKIOCGMEDIAINFO, (intptr_t)dkm, FKIOCTL, kcred, NULL)) == 0) { VDEV_DEBUG( "vdev_disk_open(\"%s\"): fallback to DKIOCGMEDIAINFO\n", vd->vdev_path); capacity = dkm->dki_capacity - 1; blksz = dkm->dki_lbsize; pbsize = blksz; } else { VDEV_DEBUG("vdev_disk_open(\"%s\"): " "both DKIOCGMEDIAINFO{,EXT} calls failed, %d\n", vd->vdev_path, error); pbsize = DEV_BSIZE; } *ashift = highbit64(MAX(pbsize, SPA_MINBLOCKSIZE)) - 1; /* XXX Now that we opened the device, determine if it is a whole disk. */ #ifdef __APPLE__ /* * XXX Apple to do - provide an ldi_ mechanism * to report whether this is a whole disk or a * partition. * Return 0 (no), 1 (yes), or -1 (error). */ // vd->vdev_wholedisk = ldi_is_wholedisk(vd->vd_lh); #endif if (vd->vdev_wholedisk == 1) { int wce = 1; /* Gets information about the disk if it has GPT partitions */ #ifdef illumos if (error == 0) { /* * If we have the capability to expand, we'd have * found out via success from DKIOCGMEDIAINFO{,EXT}. * Adjust max_psize upward accordingly since we know * we own the whole disk now. */ *max_psize = capacity * blksz; } #endif /* * Since we own the whole disk, try to enable disk write * caching. We ignore errors because it's OK if we can't do it. */ (void) ldi_ioctl(dvd->vd_lh, DKIOCSETWCE, (intptr_t)&wce, FKIOCTL, kcred, NULL); } /* * Clear the nowritecache bit, so that on a vdev_reopen() we will * try again. */ vd->vdev_nowritecache = B_FALSE; #ifdef __APPLE__ /* Inform the ZIO pipeline that we are non-rotational */ vd->vdev_nonrot = B_FALSE; if (ldi_ioctl(dvd->vd_lh, DKIOCISSOLIDSTATE, (intptr_t)&isssd, FKIOCTL, kcred, NULL) == 0) { vd->vdev_nonrot = (isssd ? B_TRUE : B_FALSE); } #endif //__APPLE__ return (0); }
/* * Given the root disk device devid or pathname, read the label from * the device, and construct a configuration nvlist. */ int vdev_disk_read_rootlabel(char *devpath, char *devid, nvlist_t **config) { ldi_handle_t vd_lh; vdev_label_t *label; uint64_t s, size; int l; ddi_devid_t tmpdevid; int error = -1; char *minor_name; /* * Read the device label and build the nvlist. */ if (devid != NULL && ddi_devid_str_decode(devid, &tmpdevid, &minor_name) == 0) { error = ldi_open_by_devid(tmpdevid, minor_name, FREAD, kcred, &vd_lh, zfs_li); ddi_devid_free(tmpdevid); ddi_devid_str_free(minor_name); } if (error && (error = ldi_open_by_name(devpath, FREAD, kcred, &vd_lh, zfs_li))) return (error); if (ldi_get_size(vd_lh, &s)) { (void) ldi_close(vd_lh, FREAD, kcred); return (SET_ERROR(EIO)); } size = P2ALIGN_TYPED(s, sizeof (vdev_label_t), uint64_t); label = kmem_alloc(sizeof (vdev_label_t), KM_SLEEP); *config = NULL; for (l = 0; l < VDEV_LABELS; l++) { uint64_t offset, state, txg = 0; /* read vdev label */ offset = vdev_label_offset(size, l, 0); if (vdev_disk_ldi_physio(vd_lh, (caddr_t)label, VDEV_SKIP_SIZE + VDEV_PHYS_SIZE, offset, B_READ) != 0) continue; if (nvlist_unpack(label->vl_vdev_phys.vp_nvlist, sizeof (label->vl_vdev_phys.vp_nvlist), config, 0) != 0) { *config = NULL; continue; } if (nvlist_lookup_uint64(*config, ZPOOL_CONFIG_POOL_STATE, &state) != 0 || state >= POOL_STATE_DESTROYED) { nvlist_free(*config); *config = NULL; continue; } if (nvlist_lookup_uint64(*config, ZPOOL_CONFIG_POOL_TXG, &txg) != 0 || txg == 0) { nvlist_free(*config); *config = NULL; continue; } break; } kmem_free(label, sizeof (vdev_label_t)); (void) ldi_close(vd_lh, FREAD, kcred); if (*config == NULL) error = SET_ERROR(EIDRM); return (error); }
static int vdev_disk_open(vdev_t *vd, uint64_t *psize, uint64_t *max_psize, uint64_t *ashift) { spa_t *spa = vd->vdev_spa; vdev_disk_t *dvd; ldi_ev_cookie_t ecookie; vdev_disk_ldi_cb_t *lcb; union { struct dk_minfo_ext ude; struct dk_minfo ud; } dks; struct dk_minfo_ext *dkmext = &dks.ude; struct dk_minfo *dkm = &dks.ud; int error; dev_t dev; int otyp; boolean_t validate_devid = B_FALSE; ddi_devid_t devid; uint64_t capacity = 0, blksz = 0, pbsize; /* * We must have a pathname, and it must be absolute. */ if (vd->vdev_path == NULL || vd->vdev_path[0] != '/') { vd->vdev_stat.vs_aux = VDEV_AUX_BAD_LABEL; return (SET_ERROR(EINVAL)); } rw_enter(&vd->vdev_tsd_lock, RW_WRITER); dvd = vd->vdev_tsd; /* * Reopen the device if it's not currently open. Otherwise, * just update the physical size of the device. */ if (dvd != NULL) { ASSERT(vd->vdev_reopening); /* * Here vd_lh is protected by vdev_tsd_lock */ ASSERT(dvd->vd_lh != NULL); /* This should not happen, but let's be safe */ if (dvd->vd_lh == NULL) { /* What are we going to do here??? */ rw_exit(&vd->vdev_tsd_lock); return (SET_ERROR(ENXIO)); } goto skip_open; } /* * Create dvd to be used as vd->vdev_tsd. */ vd->vdev_tsd = dvd = vdev_disk_alloc(); /* * When opening a disk device, we want to preserve the user's original * intent. We always want to open the device by the path the user gave * us, even if it is one of multiple paths to the same device. But we * also want to be able to survive disks being removed/recabled. * Therefore the sequence of opening devices is: * * 1. Try opening the device by path. For legacy pools without the * 'whole_disk' property, attempt to fix the path by appending 's0'. * * 2. If the devid of the device matches the stored value, return * success. * * 3. Otherwise, the device may have moved. Try opening the device * by the devid instead. */ if (vd->vdev_devid != NULL) { if (ddi_devid_str_decode(vd->vdev_devid, &dvd->vd_devid, &dvd->vd_minor) != 0) { vd->vdev_stat.vs_aux = VDEV_AUX_BAD_LABEL; vdev_disk_free_locked(vd); rw_exit(&vd->vdev_tsd_lock); return (SET_ERROR(EINVAL)); } } error = EINVAL; /* presume failure */ if (vd->vdev_path != NULL) { if (vd->vdev_wholedisk == -1ULL) { size_t len = strlen(vd->vdev_path) + 3; char *buf = kmem_alloc(len, KM_SLEEP); (void) snprintf(buf, len, "%ss0", vd->vdev_path); error = ldi_open_by_name(buf, spa_mode(spa), kcred, &dvd->vd_lh, zfs_li); if (error == 0) { spa_strfree(vd->vdev_path); vd->vdev_path = buf; vd->vdev_wholedisk = 1ULL; } else { kmem_free(buf, len); } } /* * If we have not yet opened the device, try to open it by the * specified path. */ if (error != 0) { error = ldi_open_by_name(vd->vdev_path, spa_mode(spa), kcred, &dvd->vd_lh, zfs_li); } /* * Compare the devid to the stored value. */ if (error == 0 && vd->vdev_devid != NULL && ldi_get_devid(dvd->vd_lh, &devid) == 0) { if (ddi_devid_compare(devid, dvd->vd_devid) != 0) { error = SET_ERROR(EINVAL); (void) ldi_close(dvd->vd_lh, spa_mode(spa), kcred); dvd->vd_lh = NULL; } ddi_devid_free(devid); } /* * If we succeeded in opening the device, but 'vdev_wholedisk' * is not yet set, then this must be a slice. */ if (error == 0 && vd->vdev_wholedisk == -1ULL) vd->vdev_wholedisk = 0; } /* * If we were unable to open by path, or the devid check fails, open by * devid instead. */ if (error != 0 && vd->vdev_devid != NULL) { error = ldi_open_by_devid(dvd->vd_devid, dvd->vd_minor, spa_mode(spa), kcred, &dvd->vd_lh, zfs_li); } /* * If all else fails, then try opening by physical path (if available) * or the logical path (if we failed due to the devid check). While not * as reliable as the devid, this will give us something, and the higher * level vdev validation will prevent us from opening the wrong device. */ if (error) { if (vd->vdev_devid != NULL) validate_devid = B_TRUE; if (vd->vdev_physpath != NULL && (dev = ddi_pathname_to_dev_t(vd->vdev_physpath)) != NODEV) error = ldi_open_by_dev(&dev, OTYP_BLK, spa_mode(spa), kcred, &dvd->vd_lh, zfs_li); /* * Note that we don't support the legacy auto-wholedisk support * as above. This hasn't been used in a very long time and we * don't need to propagate its oddities to this edge condition. */ if (error && vd->vdev_path != NULL) error = ldi_open_by_name(vd->vdev_path, spa_mode(spa), kcred, &dvd->vd_lh, zfs_li); } if (error) { vd->vdev_stat.vs_aux = VDEV_AUX_OPEN_FAILED; vdev_disk_free_locked(vd); rw_exit(&vd->vdev_tsd_lock); return (error); } /* * Now that the device has been successfully opened, update the devid * if necessary. */ if (validate_devid && spa_writeable(spa) && ldi_get_devid(dvd->vd_lh, &devid) == 0) { if (ddi_devid_compare(devid, dvd->vd_devid) != 0) { char *vd_devid; vd_devid = ddi_devid_str_encode(devid, dvd->vd_minor); zfs_dbgmsg("vdev %s: update devid from %s, " "to %s", vd->vdev_path, vd->vdev_devid, vd_devid); spa_strfree(vd->vdev_devid); vd->vdev_devid = spa_strdup(vd_devid); ddi_devid_str_free(vd_devid); } ddi_devid_free(devid); } /* * Once a device is opened, verify that the physical device path (if * available) is up to date. */ if (ldi_get_dev(dvd->vd_lh, &dev) == 0 && ldi_get_otyp(dvd->vd_lh, &otyp) == 0) { char *physpath, *minorname; physpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); minorname = NULL; if (ddi_dev_pathname(dev, otyp, physpath) == 0 && ldi_get_minor_name(dvd->vd_lh, &minorname) == 0 && (vd->vdev_physpath == NULL || strcmp(vd->vdev_physpath, physpath) != 0)) { if (vd->vdev_physpath) spa_strfree(vd->vdev_physpath); (void) strlcat(physpath, ":", MAXPATHLEN); (void) strlcat(physpath, minorname, MAXPATHLEN); vd->vdev_physpath = spa_strdup(physpath); } if (minorname) kmem_free(minorname, strlen(minorname) + 1); kmem_free(physpath, MAXPATHLEN); } /* * Register callbacks for the LDI offline event. */ if (ldi_ev_get_cookie(dvd->vd_lh, LDI_EV_OFFLINE, &ecookie) == LDI_EV_SUCCESS) { lcb = kmem_zalloc(sizeof (vdev_disk_ldi_cb_t), KM_SLEEP); list_insert_tail(&dvd->vd_ldi_cbs, lcb); (void) ldi_ev_register_callbacks(dvd->vd_lh, ecookie, &vdev_disk_off_callb, (void *) vd, &lcb->lcb_id); } /* * Register callbacks for the LDI degrade event. */ if (ldi_ev_get_cookie(dvd->vd_lh, LDI_EV_DEGRADE, &ecookie) == LDI_EV_SUCCESS) { lcb = kmem_zalloc(sizeof (vdev_disk_ldi_cb_t), KM_SLEEP); list_insert_tail(&dvd->vd_ldi_cbs, lcb); (void) ldi_ev_register_callbacks(dvd->vd_lh, ecookie, &vdev_disk_dgrd_callb, (void *) vd, &lcb->lcb_id); } /* Reset TRIM flag, as underlying device support may have changed */ vd->vdev_notrim = B_FALSE; skip_open: ASSERT(dvd != NULL); /* * Determine the actual size of the device. */ if (ldi_get_size(dvd->vd_lh, psize) != 0) { vd->vdev_stat.vs_aux = VDEV_AUX_OPEN_FAILED; vdev_disk_free_locked(vd); rw_exit(&vd->vdev_tsd_lock); return (SET_ERROR(EINVAL)); } *max_psize = *psize; /* * Determine the device's minimum transfer size. * If the ioctl isn't supported, assume DEV_BSIZE. */ if ((error = ldi_ioctl(dvd->vd_lh, DKIOCGMEDIAINFOEXT, (intptr_t)dkmext, FKIOCTL, kcred, NULL)) == 0) { capacity = dkmext->dki_capacity - 1; blksz = dkmext->dki_lbsize; pbsize = dkmext->dki_pbsize; } else if ((error = ldi_ioctl(dvd->vd_lh, DKIOCGMEDIAINFO, (intptr_t)dkm, FKIOCTL, kcred, NULL)) == 0) { VDEV_DEBUG( "vdev_disk_open(\"%s\"): fallback to DKIOCGMEDIAINFO\n", vd->vdev_path); capacity = dkm->dki_capacity - 1; blksz = dkm->dki_lbsize; pbsize = blksz; } else { VDEV_DEBUG("vdev_disk_open(\"%s\"): " "both DKIOCGMEDIAINFO{,EXT} calls failed, %d\n", vd->vdev_path, error); pbsize = DEV_BSIZE; } *ashift = highbit64(MAX(pbsize, SPA_MINBLOCKSIZE)) - 1; if (vd->vdev_wholedisk == 1) { int wce = 1; if (error == 0) { /* * If we have the capability to expand, we'd have * found out via success from DKIOCGMEDIAINFO{,EXT}. * Adjust max_psize upward accordingly since we know * we own the whole disk now. */ *max_psize += vdev_disk_get_space(vd, capacity, blksz); zfs_dbgmsg("capacity change: vdev %s, psize %llu, " "max_psize %llu", vd->vdev_path, *psize, *max_psize); } /* * Since we own the whole disk, try to enable disk write * caching. We ignore errors because it's OK if we can't do it. */ (void) ldi_ioctl(dvd->vd_lh, DKIOCSETWCE, (intptr_t)&wce, FKIOCTL, kcred, NULL); } /* * We are done with vd_lh and vdev_tsd, release the vdev_tsd_lock */ rw_exit(&vd->vdev_tsd_lock); /* * Clear the nowritecache bit, so that on a vdev_reopen() we will * try again. */ vd->vdev_nowritecache = B_FALSE; return (0); }
/*ARGSUSED*/ static int lx_ptm_open(dev_t *devp, int flag, int otyp, cred_t *credp) { struct strioctl iocb; ptmptsopencb_t ppocb = { NULL, NULL }; ldi_handle_t lh; major_t maj, our_major = getmajor(*devp); minor_t min, lastmin; uint_t index, anchor = 1; dev_t ptm_dev; int err, rval = 0; /* * Don't support the FNDELAY flag and FNONBLOCK until we either * find a Linux app that opens /dev/ptmx with the O_NDELAY * or O_NONBLOCK flags explicitly, or until we create test cases * to determine how reads of master terminal devices opened with * these flags behave in different situations on Linux. Supporting * these flags will involve enhancing our read implementation * and changing the way it deals with EOF notifications. */ if (flag & (FNDELAY | FNONBLOCK)) return (ENOTSUP); /* * we're layered on top of the ptm driver so open that driver * first. (note that we're opening /dev/ptmx in the global * zone, not ourselves in the Linux zone.) */ err = ldi_open_by_name(LP_PTM_PATH, flag, credp, &lh, lps.lps_li); if (err != 0) return (err); /* get the devt returned by the ptmx open */ err = ldi_get_dev(lh, &ptm_dev); if (err != 0) { (void) ldi_close(lh, flag, credp); return (err); } /* * we're a cloning driver so here's well change the devt that we * return. the ptmx is also a cloning driver so we'll just use * it's minor number as our minor number (it already manages it's * minor name space so no reason to duplicate the effort.) */ index = getminor(ptm_dev); *devp = makedevice(our_major, INDEX_TO_MINOR(index)); /* Get a callback function to query if the pts device is open. */ iocb.ic_cmd = PTMPTSOPENCB; iocb.ic_timout = 0; iocb.ic_len = sizeof (ppocb); iocb.ic_dp = (char *)&ppocb; err = ldi_ioctl(lh, I_STR, (intptr_t)&iocb, FKIOCTL, kcred, &rval); if ((err != 0) || (rval != 0)) { (void) ldi_close(lh, flag, credp); return (EIO); /* XXX return something else here? */ } ASSERT(ppocb.ppocb_func != NULL); /* * now setup autopush for the terminal slave device. this is * necessary so that when a Linux program opens the device we * can push required strmod modules onto the stream. in Solaris * this is normally done by the application that actually * allocates the terminal. */ maj = lps.lps_pts_major; min = index; lastmin = 0; err = kstr_autopush(SET_AUTOPUSH, &maj, &min, &lastmin, &anchor, lx_pts_mods); if (err != 0) { (void) ldi_close(lh, flag, credp); return (EIO); /* XXX return something else here? */ } /* save off this layered handle for future accesses */ lx_ptm_lh_insert(index, lh); lx_ptm_lh_set_ppocb(index, &ppocb); return (0); }
static int vdev_disk_open(vdev_t *vd, uint64_t *psize, uint64_t *ashift) { spa_t *spa = vd->vdev_spa; vdev_disk_t *dvd; struct dk_minfo_ext dkmext; int error; dev_t dev; int otyp; /* * We must have a pathname, and it must be absolute. */ if (vd->vdev_path == NULL || vd->vdev_path[0] != '/') { vd->vdev_stat.vs_aux = VDEV_AUX_BAD_LABEL; return (EINVAL); } /* * Reopen the device if it's not currently open. Otherwise, * just update the physical size of the device. */ if (vd->vdev_tsd != NULL) { ASSERT(vd->vdev_reopening); dvd = vd->vdev_tsd; goto skip_open; } dvd = vd->vdev_tsd = kmem_zalloc(sizeof (vdev_disk_t), KM_SLEEP); /* * When opening a disk device, we want to preserve the user's original * intent. We always want to open the device by the path the user gave * us, even if it is one of multiple paths to the save device. But we * also want to be able to survive disks being removed/recabled. * Therefore the sequence of opening devices is: * * 1. Try opening the device by path. For legacy pools without the * 'whole_disk' property, attempt to fix the path by appending 's0'. * * 2. If the devid of the device matches the stored value, return * success. * * 3. Otherwise, the device may have moved. Try opening the device * by the devid instead. */ if (vd->vdev_devid != NULL) { if (ddi_devid_str_decode(vd->vdev_devid, &dvd->vd_devid, &dvd->vd_minor) != 0) { vd->vdev_stat.vs_aux = VDEV_AUX_BAD_LABEL; return (EINVAL); } } error = EINVAL; /* presume failure */ if (vd->vdev_path != NULL) { ddi_devid_t devid; if (vd->vdev_wholedisk == -1ULL) { size_t len = strlen(vd->vdev_path) + 3; char *buf = kmem_alloc(len, KM_SLEEP); ldi_handle_t lh; (void) snprintf(buf, len, "%ss0", vd->vdev_path); if (ldi_open_by_name(buf, spa_mode(spa), kcred, &lh, zfs_li) == 0) { spa_strfree(vd->vdev_path); vd->vdev_path = buf; vd->vdev_wholedisk = 1ULL; (void) ldi_close(lh, spa_mode(spa), kcred); } else { kmem_free(buf, len); } } error = ldi_open_by_name(vd->vdev_path, spa_mode(spa), kcred, &dvd->vd_lh, zfs_li); /* * Compare the devid to the stored value. */ if (error == 0 && vd->vdev_devid != NULL && ldi_get_devid(dvd->vd_lh, &devid) == 0) { if (ddi_devid_compare(devid, dvd->vd_devid) != 0) { error = EINVAL; (void) ldi_close(dvd->vd_lh, spa_mode(spa), kcred); dvd->vd_lh = NULL; } ddi_devid_free(devid); } /* * If we succeeded in opening the device, but 'vdev_wholedisk' * is not yet set, then this must be a slice. */ if (error == 0 && vd->vdev_wholedisk == -1ULL) vd->vdev_wholedisk = 0; } /* * If we were unable to open by path, or the devid check fails, open by * devid instead. */ if (error != 0 && vd->vdev_devid != NULL) error = ldi_open_by_devid(dvd->vd_devid, dvd->vd_minor, spa_mode(spa), kcred, &dvd->vd_lh, zfs_li); /* * If all else fails, then try opening by physical path (if available) * or the logical path (if we failed due to the devid check). While not * as reliable as the devid, this will give us something, and the higher * level vdev validation will prevent us from opening the wrong device. */ if (error) { if (vd->vdev_physpath != NULL && (dev = ddi_pathname_to_dev_t(vd->vdev_physpath)) != NODEV) error = ldi_open_by_dev(&dev, OTYP_BLK, spa_mode(spa), kcred, &dvd->vd_lh, zfs_li); /* * Note that we don't support the legacy auto-wholedisk support * as above. This hasn't been used in a very long time and we * don't need to propagate its oddities to this edge condition. */ if (error && vd->vdev_path != NULL) error = ldi_open_by_name(vd->vdev_path, spa_mode(spa), kcred, &dvd->vd_lh, zfs_li); } if (error) { vd->vdev_stat.vs_aux = VDEV_AUX_OPEN_FAILED; return (error); } /* * Once a device is opened, verify that the physical device path (if * available) is up to date. */ if (ldi_get_dev(dvd->vd_lh, &dev) == 0 && ldi_get_otyp(dvd->vd_lh, &otyp) == 0) { char *physpath, *minorname; physpath = kmem_alloc(MAXPATHLEN, KM_SLEEP); minorname = NULL; if (ddi_dev_pathname(dev, otyp, physpath) == 0 && ldi_get_minor_name(dvd->vd_lh, &minorname) == 0 && (vd->vdev_physpath == NULL || strcmp(vd->vdev_physpath, physpath) != 0)) { if (vd->vdev_physpath) spa_strfree(vd->vdev_physpath); (void) strlcat(physpath, ":", MAXPATHLEN); (void) strlcat(physpath, minorname, MAXPATHLEN); vd->vdev_physpath = spa_strdup(physpath); } if (minorname) kmem_free(minorname, strlen(minorname) + 1); kmem_free(physpath, MAXPATHLEN); } skip_open: /* * Determine the actual size of the device. */ if (ldi_get_size(dvd->vd_lh, psize) != 0) { vd->vdev_stat.vs_aux = VDEV_AUX_OPEN_FAILED; return (EINVAL); } /* * If we own the whole disk, try to enable disk write caching. * We ignore errors because it's OK if we can't do it. */ if (vd->vdev_wholedisk == 1) { int wce = 1; (void) ldi_ioctl(dvd->vd_lh, DKIOCSETWCE, (intptr_t)&wce, FKIOCTL, kcred, NULL); } /* * Determine the device's minimum transfer size. * If the ioctl isn't supported, assume DEV_BSIZE. */ if (ldi_ioctl(dvd->vd_lh, DKIOCGMEDIAINFOEXT, (intptr_t)&dkmext, FKIOCTL, kcred, NULL) != 0) dkmext.dki_pbsize = DEV_BSIZE; *ashift = highbit(MAX(dkmext.dki_pbsize, SPA_MINBLOCKSIZE)) - 1; /* * Clear the nowritecache bit, so that on a vdev_reopen() we will * try again. */ vd->vdev_nowritecache = B_FALSE; return (0); }
static void sdp_gen_ioctl(queue_t *q, mblk_t *mp) { struct iocblk *iocp; int32_t enable = 0; int ret; boolean_t priv = B_TRUE; /* LINTED */ iocp = (struct iocblk *)mp->b_rptr; switch (iocp->ioc_cmd) { int32_t send_enable; case SIOCSENABLESDP: bcopy(mp->b_cont->b_rptr, &enable, sizeof (int)); send_enable = enable; /* * Check for root privs. * if not net config privs - return state of system SDP */ if (secpolicy_net_config(CRED(), B_FALSE) != 0) { priv = B_FALSE; } /* * The sdpib driver is loaded if root enables sdp the * first time (sdp_transport_handle is NULL). It is * unloaded during the following first disable. At all * other times for root as well as non-root users, the * action of enabling/disabling sdp is simply acked. */ rw_enter(&sdp_transport_lock, RW_READER); if ((send_enable == 1) && (sdp_transport_handle == NULL) && (priv == B_TRUE)) { /* Initialize sdpib transport driver */ rw_exit(&sdp_transport_lock); ret = sdp_open_sdpib_driver(); rw_enter(&sdp_transport_lock, RW_READER); if (ret != 0) { /* Transport failed to load */ rw_exit(&sdp_transport_lock); enable = 0; goto done; } (void) ldi_ioctl(sdp_transport_handle, iocp->ioc_cmd, (intptr_t)&send_enable, FKIOCTL, CRED(), (int *)&enable); } else if (sdp_transport_handle != NULL) { (void) ldi_ioctl(sdp_transport_handle, iocp->ioc_cmd, (intptr_t)&send_enable, FKIOCTL, CRED(), (int *)&enable); if (send_enable == 0 && priv == B_TRUE) { (void) ldi_close(sdp_transport_handle, FNDELAY, kcred); sdp_transport_handle = NULL; } } else { enable = 0; } rw_exit(&sdp_transport_lock); done: bcopy(&enable, mp->b_cont->b_rptr, sizeof (int)); /* ACK the ioctl */ mp->b_datap->db_type = M_IOCACK; iocp->ioc_count = sizeof (int); qreply(q, mp); break; default: miocnak(q, mp, 0, ENOTSUP); } }