and gids from such clients. This is intended to ease
migration from NFSv2/v3.
- objlayoutdriver.osd_login_prog=
- [NFS] [OBJLAYOUT] sets the pathname to the program which
- is used to automatically discover and login into new
- osd-targets. Please see:
- Documentation/filesystems/pnfs.txt for more explanations
-
nmi_debug= [KNL,AVR32,SH] Specify one or more actions to take
when a NMI is triggered.
Format: [state][,regs][,debounce][,die]
different layout types.
Files-layout-driver code is in: fs/nfs/filelayout/.. directory
-Objects-layout-driver code is in: fs/nfs/objlayout/.. directory
Blocks-layout-driver code is in: fs/nfs/blocklayout/.. directory
Flexfiles-layout-driver code is in: fs/nfs/flexfilelayout/.. directory
-objects-layout setup
---------------------
-
-As part of the full STD implementation the objlayoutdriver.ko needs, at times,
-to automatically login to yet undiscovered iscsi/osd devices. For this the
-driver makes up-calles to a user-mode script called *osd_login*
-
-The path_name of the script to use is by default:
- /sbin/osd_login.
-This name can be overridden by the Kernel module parameter:
- objlayoutdriver.osd_login_prog
-
-If Kernel does not find the osd_login_prog path it will zero it out
-and will not attempt farther logins. An admin can then write new value
-to the objlayoutdriver.osd_login_prog Kernel parameter to re-enable it.
-
-The /sbin/osd_login is part of the nfs-utils package, and should usually
-be installed on distributions that support this Kernel version.
-
-The API to the login script is as follows:
- Usage: $0 -u <URI> -o <OSDNAME> -s <SYSTEMID>
- Options:
- -u target uri e.g. iscsi://<ip>:<port>
- (always exists)
- (More protocols can be defined in the future.
- The client does not interpret this string it is
- passed unchanged as received from the Server)
- -o osdname of the requested target OSD
- (Might be empty)
- (A string which denotes the OSD name, there is a
- limit of 64 chars on this string)
- -s systemid of the requested target OSD
- (Might be empty)
- (This string, if not empty is always an hex
- representation of the 20 bytes osd_system_id)
-
blocks-layout setup
-------------------
depends on NFS_V4_1 && BLK_DEV_DM
default NFS_V4
-config PNFS_OBJLAYOUT
- tristate
- depends on NFS_V4_1 && SCSI_OSD_ULD
- default NFS_V4
-
config PNFS_FLEXFILE_LAYOUT
tristate
depends on NFS_V4_1 && NFS_V3
nfsv4-$(CONFIG_NFS_V4_2) += nfs42proc.o
obj-$(CONFIG_PNFS_FILE_LAYOUT) += filelayout/
-obj-$(CONFIG_PNFS_OBJLAYOUT) += objlayout/
obj-$(CONFIG_PNFS_BLOCK) += blocklayout/
obj-$(CONFIG_PNFS_FLEXFILE_LAYOUT) += flexfilelayout/
+++ /dev/null
-#
-# Makefile for the pNFS Objects Layout Driver kernel module
-#
-objlayoutdriver-y := objio_osd.o pnfs_osd_xdr_cli.o objlayout.o
-obj-$(CONFIG_PNFS_OBJLAYOUT) += objlayoutdriver.o
+++ /dev/null
-/*
- * pNFS Objects layout implementation over open-osd initiator library
- *
- * Copyright (C) 2009 Panasas Inc. [year of first publication]
- * All rights reserved.
- *
- * Benny Halevy <bhalevy@panasas.com>
- * Boaz Harrosh <ooo@electrozaur.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2
- * See the file COPYING included with this distribution for more details.
- *
- * 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. Neither the name of the Panasas company nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED ``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 REGENTS 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 <linux/module.h>
-#include <scsi/osd_ore.h>
-
-#include "objlayout.h"
-#include "../internal.h"
-
-#define NFSDBG_FACILITY NFSDBG_PNFS_LD
-
-struct objio_dev_ent {
- struct nfs4_deviceid_node id_node;
- struct ore_dev od;
-};
-
-static void
-objio_free_deviceid_node(struct nfs4_deviceid_node *d)
-{
- struct objio_dev_ent *de = container_of(d, struct objio_dev_ent, id_node);
-
- dprintk("%s: free od=%p\n", __func__, de->od.od);
- osduld_put_device(de->od.od);
- kfree_rcu(d, rcu);
-}
-
-struct objio_segment {
- struct pnfs_layout_segment lseg;
-
- struct ore_layout layout;
- struct ore_components oc;
-};
-
-static inline struct objio_segment *
-OBJIO_LSEG(struct pnfs_layout_segment *lseg)
-{
- return container_of(lseg, struct objio_segment, lseg);
-}
-
-struct objio_state {
- /* Generic layer */
- struct objlayout_io_res oir;
-
- bool sync;
- /*FIXME: Support for extra_bytes at ore_get_rw_state() */
- struct ore_io_state *ios;
-};
-
-/* Send and wait for a get_device_info of devices in the layout,
- then look them up with the osd_initiator library */
-struct nfs4_deviceid_node *
-objio_alloc_deviceid_node(struct nfs_server *server, struct pnfs_device *pdev,
- gfp_t gfp_flags)
-{
- struct pnfs_osd_deviceaddr *deviceaddr;
- struct objio_dev_ent *ode = NULL;
- struct osd_dev *od;
- struct osd_dev_info odi;
- bool retry_flag = true;
- __be32 *p;
- int err;
-
- deviceaddr = kzalloc(sizeof(*deviceaddr), gfp_flags);
- if (!deviceaddr)
- return NULL;
-
- p = page_address(pdev->pages[0]);
- pnfs_osd_xdr_decode_deviceaddr(deviceaddr, p);
-
- odi.systemid_len = deviceaddr->oda_systemid.len;
- if (odi.systemid_len > sizeof(odi.systemid)) {
- dprintk("%s: odi.systemid_len > sizeof(systemid=%zd)\n",
- __func__, sizeof(odi.systemid));
- err = -EINVAL;
- goto out;
- } else if (odi.systemid_len)
- memcpy(odi.systemid, deviceaddr->oda_systemid.data,
- odi.systemid_len);
- odi.osdname_len = deviceaddr->oda_osdname.len;
- odi.osdname = (u8 *)deviceaddr->oda_osdname.data;
-
- if (!odi.osdname_len && !odi.systemid_len) {
- dprintk("%s: !odi.osdname_len && !odi.systemid_len\n",
- __func__);
- err = -ENODEV;
- goto out;
- }
-
-retry_lookup:
- od = osduld_info_lookup(&odi);
- if (IS_ERR(od)) {
- err = PTR_ERR(od);
- dprintk("%s: osduld_info_lookup => %d\n", __func__, err);
- if (err == -ENODEV && retry_flag) {
- err = objlayout_autologin(deviceaddr);
- if (likely(!err)) {
- retry_flag = false;
- goto retry_lookup;
- }
- }
- goto out;
- }
-
- dprintk("Adding new dev_id(%llx:%llx)\n",
- _DEVID_LO(&pdev->dev_id), _DEVID_HI(&pdev->dev_id));
-
- ode = kzalloc(sizeof(*ode), gfp_flags);
- if (!ode) {
- dprintk("%s: -ENOMEM od=%p\n", __func__, od);
- goto out;
- }
-
- nfs4_init_deviceid_node(&ode->id_node, server, &pdev->dev_id);
- kfree(deviceaddr);
-
- ode->od.od = od;
- return &ode->id_node;
-
-out:
- kfree(deviceaddr);
- return NULL;
-}
-
-static void copy_single_comp(struct ore_components *oc, unsigned c,
- struct pnfs_osd_object_cred *src_comp)
-{
- struct ore_comp *ocomp = &oc->comps[c];
-
- WARN_ON(src_comp->oc_cap_key.cred_len > 0); /* libosd is NO_SEC only */
- WARN_ON(src_comp->oc_cap.cred_len > sizeof(ocomp->cred));
-
- ocomp->obj.partition = src_comp->oc_object_id.oid_partition_id;
- ocomp->obj.id = src_comp->oc_object_id.oid_object_id;
-
- memcpy(ocomp->cred, src_comp->oc_cap.cred, sizeof(ocomp->cred));
-}
-
-static int __alloc_objio_seg(unsigned numdevs, gfp_t gfp_flags,
- struct objio_segment **pseg)
-{
-/* This is the in memory structure of the objio_segment
- *
- * struct __alloc_objio_segment {
- * struct objio_segment olseg;
- * struct ore_dev *ods[numdevs];
- * struct ore_comp comps[numdevs];
- * } *aolseg;
- * NOTE: The code as above compiles and runs perfectly. It is elegant,
- * type safe and compact. At some Past time Linus has decided he does not
- * like variable length arrays, For the sake of this principal we uglify
- * the code as below.
- */
- struct objio_segment *lseg;
- size_t lseg_size = sizeof(*lseg) +
- numdevs * sizeof(lseg->oc.ods[0]) +
- numdevs * sizeof(*lseg->oc.comps);
-
- lseg = kzalloc(lseg_size, gfp_flags);
- if (unlikely(!lseg)) {
- dprintk("%s: Failed allocation numdevs=%d size=%zd\n", __func__,
- numdevs, lseg_size);
- return -ENOMEM;
- }
-
- lseg->oc.numdevs = numdevs;
- lseg->oc.single_comp = EC_MULTPLE_COMPS;
- lseg->oc.ods = (void *)(lseg + 1);
- lseg->oc.comps = (void *)(lseg->oc.ods + numdevs);
-
- *pseg = lseg;
- return 0;
-}
-
-int objio_alloc_lseg(struct pnfs_layout_segment **outp,
- struct pnfs_layout_hdr *pnfslay,
- struct pnfs_layout_range *range,
- struct xdr_stream *xdr,
- gfp_t gfp_flags)
-{
- struct nfs_server *server = NFS_SERVER(pnfslay->plh_inode);
- struct objio_segment *objio_seg;
- struct pnfs_osd_xdr_decode_layout_iter iter;
- struct pnfs_osd_layout layout;
- struct pnfs_osd_object_cred src_comp;
- unsigned cur_comp;
- int err;
-
- err = pnfs_osd_xdr_decode_layout_map(&layout, &iter, xdr);
- if (unlikely(err))
- return err;
-
- err = __alloc_objio_seg(layout.olo_num_comps, gfp_flags, &objio_seg);
- if (unlikely(err))
- return err;
-
- objio_seg->layout.stripe_unit = layout.olo_map.odm_stripe_unit;
- objio_seg->layout.group_width = layout.olo_map.odm_group_width;
- objio_seg->layout.group_depth = layout.olo_map.odm_group_depth;
- objio_seg->layout.mirrors_p1 = layout.olo_map.odm_mirror_cnt + 1;
- objio_seg->layout.raid_algorithm = layout.olo_map.odm_raid_algorithm;
-
- err = ore_verify_layout(layout.olo_map.odm_num_comps,
- &objio_seg->layout);
- if (unlikely(err))
- goto err;
-
- objio_seg->oc.first_dev = layout.olo_comps_index;
- cur_comp = 0;
- while (pnfs_osd_xdr_decode_layout_comp(&src_comp, &iter, xdr, &err)) {
- struct nfs4_deviceid_node *d;
- struct objio_dev_ent *ode;
-
- copy_single_comp(&objio_seg->oc, cur_comp, &src_comp);
-
- d = nfs4_find_get_deviceid(server,
- &src_comp.oc_object_id.oid_device_id,
- pnfslay->plh_lc_cred, gfp_flags);
- if (!d) {
- err = -ENXIO;
- goto err;
- }
-
- ode = container_of(d, struct objio_dev_ent, id_node);
- objio_seg->oc.ods[cur_comp++] = &ode->od;
- }
- /* pnfs_osd_xdr_decode_layout_comp returns false on error */
- if (unlikely(err))
- goto err;
-
- *outp = &objio_seg->lseg;
- return 0;
-
-err:
- kfree(objio_seg);
- dprintk("%s: Error: return %d\n", __func__, err);
- *outp = NULL;
- return err;
-}
-
-void objio_free_lseg(struct pnfs_layout_segment *lseg)
-{
- int i;
- struct objio_segment *objio_seg = OBJIO_LSEG(lseg);
-
- for (i = 0; i < objio_seg->oc.numdevs; i++) {
- struct ore_dev *od = objio_seg->oc.ods[i];
- struct objio_dev_ent *ode;
-
- if (!od)
- break;
- ode = container_of(od, typeof(*ode), od);
- nfs4_put_deviceid_node(&ode->id_node);
- }
- kfree(objio_seg);
-}
-
-static int
-objio_alloc_io_state(struct pnfs_layout_hdr *pnfs_layout_type, bool is_reading,
- struct pnfs_layout_segment *lseg, struct page **pages, unsigned pgbase,
- loff_t offset, size_t count, void *rpcdata, gfp_t gfp_flags,
- struct objio_state **outp)
-{
- struct objio_segment *objio_seg = OBJIO_LSEG(lseg);
- struct ore_io_state *ios;
- int ret;
- struct __alloc_objio_state {
- struct objio_state objios;
- struct pnfs_osd_ioerr ioerrs[objio_seg->oc.numdevs];
- } *aos;
-
- aos = kzalloc(sizeof(*aos), gfp_flags);
- if (unlikely(!aos))
- return -ENOMEM;
-
- objlayout_init_ioerrs(&aos->objios.oir, objio_seg->oc.numdevs,
- aos->ioerrs, rpcdata, pnfs_layout_type);
-
- ret = ore_get_rw_state(&objio_seg->layout, &objio_seg->oc, is_reading,
- offset, count, &ios);
- if (unlikely(ret)) {
- kfree(aos);
- return ret;
- }
-
- ios->pages = pages;
- ios->pgbase = pgbase;
- ios->private = aos;
- BUG_ON(ios->nr_pages > (pgbase + count + PAGE_SIZE - 1) >> PAGE_SHIFT);
-
- aos->objios.sync = 0;
- aos->objios.ios = ios;
- *outp = &aos->objios;
- return 0;
-}
-
-void objio_free_result(struct objlayout_io_res *oir)
-{
- struct objio_state *objios = container_of(oir, struct objio_state, oir);
-
- ore_put_io_state(objios->ios);
- kfree(objios);
-}
-
-static enum pnfs_osd_errno osd_pri_2_pnfs_err(enum osd_err_priority oep)
-{
- switch (oep) {
- case OSD_ERR_PRI_NO_ERROR:
- return (enum pnfs_osd_errno)0;
-
- case OSD_ERR_PRI_CLEAR_PAGES:
- BUG_ON(1);
- return 0;
-
- case OSD_ERR_PRI_RESOURCE:
- return PNFS_OSD_ERR_RESOURCE;
- case OSD_ERR_PRI_BAD_CRED:
- return PNFS_OSD_ERR_BAD_CRED;
- case OSD_ERR_PRI_NO_ACCESS:
- return PNFS_OSD_ERR_NO_ACCESS;
- case OSD_ERR_PRI_UNREACHABLE:
- return PNFS_OSD_ERR_UNREACHABLE;
- case OSD_ERR_PRI_NOT_FOUND:
- return PNFS_OSD_ERR_NOT_FOUND;
- case OSD_ERR_PRI_NO_SPACE:
- return PNFS_OSD_ERR_NO_SPACE;
- default:
- WARN_ON(1);
- /* fallthrough */
- case OSD_ERR_PRI_EIO:
- return PNFS_OSD_ERR_EIO;
- }
-}
-
-static void __on_dev_error(struct ore_io_state *ios,
- struct ore_dev *od, unsigned dev_index, enum osd_err_priority oep,
- u64 dev_offset, u64 dev_len)
-{
- struct objio_state *objios = ios->private;
- struct pnfs_osd_objid pooid;
- struct objio_dev_ent *ode = container_of(od, typeof(*ode), od);
- /* FIXME: what to do with more-then-one-group layouts. We need to
- * translate from ore_io_state index to oc->comps index
- */
- unsigned comp = dev_index;
-
- pooid.oid_device_id = ode->id_node.deviceid;
- pooid.oid_partition_id = ios->oc->comps[comp].obj.partition;
- pooid.oid_object_id = ios->oc->comps[comp].obj.id;
-
- objlayout_io_set_result(&objios->oir, comp,
- &pooid, osd_pri_2_pnfs_err(oep),
- dev_offset, dev_len, !ios->reading);
-}
-
-/*
- * read
- */
-static void _read_done(struct ore_io_state *ios, void *private)
-{
- struct objio_state *objios = private;
- ssize_t status;
- int ret = ore_check_io(ios, &__on_dev_error);
-
- /* FIXME: _io_free(ios) can we dealocate the libosd resources; */
-
- if (likely(!ret))
- status = ios->length;
- else
- status = ret;
-
- objlayout_read_done(&objios->oir, status, objios->sync);
-}
-
-int objio_read_pagelist(struct nfs_pgio_header *hdr)
-{
- struct objio_state *objios;
- int ret;
-
- ret = objio_alloc_io_state(NFS_I(hdr->inode)->layout, true,
- hdr->lseg, hdr->args.pages, hdr->args.pgbase,
- hdr->args.offset, hdr->args.count, hdr,
- GFP_KERNEL, &objios);
- if (unlikely(ret))
- return ret;
-
- objios->ios->done = _read_done;
- dprintk("%s: offset=0x%llx length=0x%x\n", __func__,
- hdr->args.offset, hdr->args.count);
- ret = ore_read(objios->ios);
- if (unlikely(ret))
- objio_free_result(&objios->oir);
- return ret;
-}
-
-/*
- * write
- */
-static void _write_done(struct ore_io_state *ios, void *private)
-{
- struct objio_state *objios = private;
- ssize_t status;
- int ret = ore_check_io(ios, &__on_dev_error);
-
- /* FIXME: _io_free(ios) can we dealocate the libosd resources; */
-
- if (likely(!ret)) {
- /* FIXME: should be based on the OSD's persistence model
- * See OSD2r05 Section 4.13 Data persistence model */
- objios->oir.committed = NFS_FILE_SYNC;
- status = ios->length;
- } else {
- status = ret;
- }
-
- objlayout_write_done(&objios->oir, status, objios->sync);
-}
-
-static struct page *__r4w_get_page(void *priv, u64 offset, bool *uptodate)
-{
- struct objio_state *objios = priv;
- struct nfs_pgio_header *hdr = objios->oir.rpcdata;
- struct address_space *mapping = hdr->inode->i_mapping;
- pgoff_t index = offset / PAGE_SIZE;
- struct page *page;
- loff_t i_size = i_size_read(hdr->inode);
-
- if (offset >= i_size) {
- *uptodate = true;
- dprintk("%s: g_zero_page index=0x%lx\n", __func__, index);
- return ZERO_PAGE(0);
- }
-
- page = find_get_page(mapping, index);
- if (!page) {
- page = find_or_create_page(mapping, index, GFP_NOFS);
- if (unlikely(!page)) {
- dprintk("%s: grab_cache_page Failed index=0x%lx\n",
- __func__, index);
- return NULL;
- }
- unlock_page(page);
- }
- *uptodate = PageUptodate(page);
- dprintk("%s: index=0x%lx uptodate=%d\n", __func__, index, *uptodate);
- return page;
-}
-
-static void __r4w_put_page(void *priv, struct page *page)
-{
- dprintk("%s: index=0x%lx\n", __func__,
- (page == ZERO_PAGE(0)) ? -1UL : page->index);
- if (ZERO_PAGE(0) != page)
- put_page(page);
- return;
-}
-
-static const struct _ore_r4w_op _r4w_op = {
- .get_page = &__r4w_get_page,
- .put_page = &__r4w_put_page,
-};
-
-int objio_write_pagelist(struct nfs_pgio_header *hdr, int how)
-{
- struct objio_state *objios;
- int ret;
-
- ret = objio_alloc_io_state(NFS_I(hdr->inode)->layout, false,
- hdr->lseg, hdr->args.pages, hdr->args.pgbase,
- hdr->args.offset, hdr->args.count, hdr, GFP_NOFS,
- &objios);
- if (unlikely(ret))
- return ret;
-
- objios->sync = 0 != (how & FLUSH_SYNC);
- objios->ios->r4w = &_r4w_op;
-
- if (!objios->sync)
- objios->ios->done = _write_done;
-
- dprintk("%s: offset=0x%llx length=0x%x\n", __func__,
- hdr->args.offset, hdr->args.count);
- ret = ore_write(objios->ios);
- if (unlikely(ret)) {
- objio_free_result(&objios->oir);
- return ret;
- }
-
- if (objios->sync)
- _write_done(objios->ios, objios);
-
- return 0;
-}
-
-/*
- * Return 0 if @req cannot be coalesced into @pgio, otherwise return the number
- * of bytes (maximum @req->wb_bytes) that can be coalesced.
- */
-static size_t objio_pg_test(struct nfs_pageio_descriptor *pgio,
- struct nfs_page *prev, struct nfs_page *req)
-{
- struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(pgio);
- unsigned int size;
-
- size = pnfs_generic_pg_test(pgio, prev, req);
-
- if (!size || mirror->pg_count + req->wb_bytes >
- (unsigned long)pgio->pg_layout_private)
- return 0;
-
- return min(size, req->wb_bytes);
-}
-
-static void objio_init_read(struct nfs_pageio_descriptor *pgio, struct nfs_page *req)
-{
- pnfs_generic_pg_init_read(pgio, req);
- if (unlikely(pgio->pg_lseg == NULL))
- return; /* Not pNFS */
-
- pgio->pg_layout_private = (void *)
- OBJIO_LSEG(pgio->pg_lseg)->layout.max_io_length;
-}
-
-static bool aligned_on_raid_stripe(u64 offset, struct ore_layout *layout,
- unsigned long *stripe_end)
-{
- u32 stripe_off;
- unsigned stripe_size;
-
- if (layout->raid_algorithm == PNFS_OSD_RAID_0)
- return true;
-
- stripe_size = layout->stripe_unit *
- (layout->group_width - layout->parity);
-
- div_u64_rem(offset, stripe_size, &stripe_off);
- if (!stripe_off)
- return true;
-
- *stripe_end = stripe_size - stripe_off;
- return false;
-}
-
-static void objio_init_write(struct nfs_pageio_descriptor *pgio, struct nfs_page *req)
-{
- unsigned long stripe_end = 0;
- u64 wb_size;
-
- if (pgio->pg_dreq == NULL)
- wb_size = i_size_read(pgio->pg_inode) - req_offset(req);
- else
- wb_size = nfs_dreq_bytes_left(pgio->pg_dreq);
-
- pnfs_generic_pg_init_write(pgio, req, wb_size);
- if (unlikely(pgio->pg_lseg == NULL))
- return; /* Not pNFS */
-
- if (req->wb_offset ||
- !aligned_on_raid_stripe(req->wb_index * PAGE_SIZE,
- &OBJIO_LSEG(pgio->pg_lseg)->layout,
- &stripe_end)) {
- pgio->pg_layout_private = (void *)stripe_end;
- } else {
- pgio->pg_layout_private = (void *)
- OBJIO_LSEG(pgio->pg_lseg)->layout.max_io_length;
- }
-}
-
-static const struct nfs_pageio_ops objio_pg_read_ops = {
- .pg_init = objio_init_read,
- .pg_test = objio_pg_test,
- .pg_doio = pnfs_generic_pg_readpages,
- .pg_cleanup = pnfs_generic_pg_cleanup,
-};
-
-static const struct nfs_pageio_ops objio_pg_write_ops = {
- .pg_init = objio_init_write,
- .pg_test = objio_pg_test,
- .pg_doio = pnfs_generic_pg_writepages,
- .pg_cleanup = pnfs_generic_pg_cleanup,
-};
-
-static struct pnfs_layoutdriver_type objlayout_type = {
- .id = LAYOUT_OSD2_OBJECTS,
- .name = "LAYOUT_OSD2_OBJECTS",
- .flags = PNFS_LAYOUTRET_ON_SETATTR |
- PNFS_LAYOUTRET_ON_ERROR,
-
- .max_deviceinfo_size = PAGE_SIZE,
- .owner = THIS_MODULE,
- .alloc_layout_hdr = objlayout_alloc_layout_hdr,
- .free_layout_hdr = objlayout_free_layout_hdr,
-
- .alloc_lseg = objlayout_alloc_lseg,
- .free_lseg = objlayout_free_lseg,
-
- .read_pagelist = objlayout_read_pagelist,
- .write_pagelist = objlayout_write_pagelist,
- .pg_read_ops = &objio_pg_read_ops,
- .pg_write_ops = &objio_pg_write_ops,
-
- .sync = pnfs_generic_sync,
-
- .free_deviceid_node = objio_free_deviceid_node,
-
- .encode_layoutcommit = objlayout_encode_layoutcommit,
- .encode_layoutreturn = objlayout_encode_layoutreturn,
-};
-
-MODULE_DESCRIPTION("pNFS Layout Driver for OSD2 objects");
-MODULE_AUTHOR("Benny Halevy <bhalevy@panasas.com>");
-MODULE_LICENSE("GPL");
-
-static int __init
-objlayout_init(void)
-{
- int ret = pnfs_register_layoutdriver(&objlayout_type);
-
- if (ret)
- printk(KERN_INFO
- "NFS: %s: Registering OSD pNFS Layout Driver failed: error=%d\n",
- __func__, ret);
- else
- printk(KERN_INFO "NFS: %s: Registered OSD pNFS Layout Driver\n",
- __func__);
- return ret;
-}
-
-static void __exit
-objlayout_exit(void)
-{
- pnfs_unregister_layoutdriver(&objlayout_type);
- printk(KERN_INFO "NFS: %s: Unregistered OSD pNFS Layout Driver\n",
- __func__);
-}
-
-MODULE_ALIAS("nfs-layouttype4-2");
-
-module_init(objlayout_init);
-module_exit(objlayout_exit);
+++ /dev/null
-/*
- * pNFS Objects layout driver high level definitions
- *
- * Copyright (C) 2007 Panasas Inc. [year of first publication]
- * All rights reserved.
- *
- * Benny Halevy <bhalevy@panasas.com>
- * Boaz Harrosh <ooo@electrozaur.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2
- * See the file COPYING included with this distribution for more details.
- *
- * 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. Neither the name of the Panasas company nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED ``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 REGENTS 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 <linux/kmod.h>
-#include <linux/moduleparam.h>
-#include <linux/ratelimit.h>
-#include <scsi/osd_initiator.h>
-#include "objlayout.h"
-
-#define NFSDBG_FACILITY NFSDBG_PNFS_LD
-/*
- * Create a objlayout layout structure for the given inode and return it.
- */
-struct pnfs_layout_hdr *
-objlayout_alloc_layout_hdr(struct inode *inode, gfp_t gfp_flags)
-{
- struct objlayout *objlay;
-
- objlay = kzalloc(sizeof(struct objlayout), gfp_flags);
- if (!objlay)
- return NULL;
- spin_lock_init(&objlay->lock);
- INIT_LIST_HEAD(&objlay->err_list);
- dprintk("%s: Return %p\n", __func__, objlay);
- return &objlay->pnfs_layout;
-}
-
-/*
- * Free an objlayout layout structure
- */
-void
-objlayout_free_layout_hdr(struct pnfs_layout_hdr *lo)
-{
- struct objlayout *objlay = OBJLAYOUT(lo);
-
- dprintk("%s: objlay %p\n", __func__, objlay);
-
- WARN_ON(!list_empty(&objlay->err_list));
- kfree(objlay);
-}
-
-/*
- * Unmarshall layout and store it in pnfslay.
- */
-struct pnfs_layout_segment *
-objlayout_alloc_lseg(struct pnfs_layout_hdr *pnfslay,
- struct nfs4_layoutget_res *lgr,
- gfp_t gfp_flags)
-{
- int status = -ENOMEM;
- struct xdr_stream stream;
- struct xdr_buf buf = {
- .pages = lgr->layoutp->pages,
- .page_len = lgr->layoutp->len,
- .buflen = lgr->layoutp->len,
- .len = lgr->layoutp->len,
- };
- struct page *scratch;
- struct pnfs_layout_segment *lseg;
-
- dprintk("%s: Begin pnfslay %p\n", __func__, pnfslay);
-
- scratch = alloc_page(gfp_flags);
- if (!scratch)
- goto err_nofree;
-
- xdr_init_decode(&stream, &buf, NULL);
- xdr_set_scratch_buffer(&stream, page_address(scratch), PAGE_SIZE);
-
- status = objio_alloc_lseg(&lseg, pnfslay, &lgr->range, &stream, gfp_flags);
- if (unlikely(status)) {
- dprintk("%s: objio_alloc_lseg Return err %d\n", __func__,
- status);
- goto err;
- }
-
- __free_page(scratch);
-
- dprintk("%s: Return %p\n", __func__, lseg);
- return lseg;
-
-err:
- __free_page(scratch);
-err_nofree:
- dprintk("%s: Err Return=>%d\n", __func__, status);
- return ERR_PTR(status);
-}
-
-/*
- * Free a layout segement
- */
-void
-objlayout_free_lseg(struct pnfs_layout_segment *lseg)
-{
- dprintk("%s: freeing layout segment %p\n", __func__, lseg);
-
- if (unlikely(!lseg))
- return;
-
- objio_free_lseg(lseg);
-}
-
-/*
- * I/O Operations
- */
-static inline u64
-end_offset(u64 start, u64 len)
-{
- u64 end;
-
- end = start + len;
- return end >= start ? end : NFS4_MAX_UINT64;
-}
-
-static void _fix_verify_io_params(struct pnfs_layout_segment *lseg,
- struct page ***p_pages, unsigned *p_pgbase,
- u64 offset, unsigned long count)
-{
- u64 lseg_end_offset;
-
- BUG_ON(offset < lseg->pls_range.offset);
- lseg_end_offset = end_offset(lseg->pls_range.offset,
- lseg->pls_range.length);
- BUG_ON(offset >= lseg_end_offset);
- WARN_ON(offset + count > lseg_end_offset);
-
- if (*p_pgbase > PAGE_SIZE) {
- dprintk("%s: pgbase(0x%x) > PAGE_SIZE\n", __func__, *p_pgbase);
- *p_pages += *p_pgbase >> PAGE_SHIFT;
- *p_pgbase &= ~PAGE_MASK;
- }
-}
-
-/*
- * I/O done common code
- */
-static void
-objlayout_iodone(struct objlayout_io_res *oir)
-{
- if (likely(oir->status >= 0)) {
- objio_free_result(oir);
- } else {
- struct objlayout *objlay = oir->objlay;
-
- spin_lock(&objlay->lock);
- objlay->delta_space_valid = OBJ_DSU_INVALID;
- list_add(&objlay->err_list, &oir->err_list);
- spin_unlock(&objlay->lock);
- }
-}
-
-/*
- * objlayout_io_set_result - Set an osd_error code on a specific osd comp.
- *
- * The @index component IO failed (error returned from target). Register
- * the error for later reporting at layout-return.
- */
-void
-objlayout_io_set_result(struct objlayout_io_res *oir, unsigned index,
- struct pnfs_osd_objid *pooid, int osd_error,
- u64 offset, u64 length, bool is_write)
-{
- struct pnfs_osd_ioerr *ioerr = &oir->ioerrs[index];
-
- BUG_ON(index >= oir->num_comps);
- if (osd_error) {
- ioerr->oer_component = *pooid;
- ioerr->oer_comp_offset = offset;
- ioerr->oer_comp_length = length;
- ioerr->oer_iswrite = is_write;
- ioerr->oer_errno = osd_error;
-
- dprintk("%s: err[%d]: errno=%d is_write=%d dev(%llx:%llx) "
- "par=0x%llx obj=0x%llx offset=0x%llx length=0x%llx\n",
- __func__, index, ioerr->oer_errno,
- ioerr->oer_iswrite,
- _DEVID_LO(&ioerr->oer_component.oid_device_id),
- _DEVID_HI(&ioerr->oer_component.oid_device_id),
- ioerr->oer_component.oid_partition_id,
- ioerr->oer_component.oid_object_id,
- ioerr->oer_comp_offset,
- ioerr->oer_comp_length);
- } else {
- /* User need not call if no error is reported */
- ioerr->oer_errno = 0;
- }
-}
-
-/* Function scheduled on rpc workqueue to call ->nfs_readlist_complete().
- * This is because the osd completion is called with ints-off from
- * the block layer
- */
-static void _rpc_read_complete(struct work_struct *work)
-{
- struct rpc_task *task;
- struct nfs_pgio_header *hdr;
-
- dprintk("%s enter\n", __func__);
- task = container_of(work, struct rpc_task, u.tk_work);
- hdr = container_of(task, struct nfs_pgio_header, task);
-
- pnfs_ld_read_done(hdr);
-}
-
-void
-objlayout_read_done(struct objlayout_io_res *oir, ssize_t status, bool sync)
-{
- struct nfs_pgio_header *hdr = oir->rpcdata;
-
- oir->status = hdr->task.tk_status = status;
- if (status >= 0)
- hdr->res.count = status;
- else
- hdr->pnfs_error = status;
- objlayout_iodone(oir);
- /* must not use oir after this point */
-
- dprintk("%s: Return status=%zd eof=%d sync=%d\n", __func__,
- status, hdr->res.eof, sync);
-
- if (sync)
- pnfs_ld_read_done(hdr);
- else {
- INIT_WORK(&hdr->task.u.tk_work, _rpc_read_complete);
- schedule_work(&hdr->task.u.tk_work);
- }
-}
-
-/*
- * Perform sync or async reads.
- */
-enum pnfs_try_status
-objlayout_read_pagelist(struct nfs_pgio_header *hdr)
-{
- struct inode *inode = hdr->inode;
- loff_t offset = hdr->args.offset;
- size_t count = hdr->args.count;
- int err;
- loff_t eof;
-
- eof = i_size_read(inode);
- if (unlikely(offset + count > eof)) {
- if (offset >= eof) {
- err = 0;
- hdr->res.count = 0;
- hdr->res.eof = 1;
- /*FIXME: do we need to call pnfs_ld_read_done() */
- goto out;
- }
- count = eof - offset;
- }
-
- hdr->res.eof = (offset + count) >= eof;
- _fix_verify_io_params(hdr->lseg, &hdr->args.pages,
- &hdr->args.pgbase,
- hdr->args.offset, hdr->args.count);
-
- dprintk("%s: inode(%lx) offset 0x%llx count 0x%zx eof=%d\n",
- __func__, inode->i_ino, offset, count, hdr->res.eof);
-
- err = objio_read_pagelist(hdr);
- out:
- if (unlikely(err)) {
- hdr->pnfs_error = err;
- dprintk("%s: Returned Error %d\n", __func__, err);
- return PNFS_NOT_ATTEMPTED;
- }
- return PNFS_ATTEMPTED;
-}
-
-/* Function scheduled on rpc workqueue to call ->nfs_writelist_complete().
- * This is because the osd completion is called with ints-off from
- * the block layer
- */
-static void _rpc_write_complete(struct work_struct *work)
-{
- struct rpc_task *task;
- struct nfs_pgio_header *hdr;
-
- dprintk("%s enter\n", __func__);
- task = container_of(work, struct rpc_task, u.tk_work);
- hdr = container_of(task, struct nfs_pgio_header, task);
-
- pnfs_ld_write_done(hdr);
-}
-
-void
-objlayout_write_done(struct objlayout_io_res *oir, ssize_t status, bool sync)
-{
- struct nfs_pgio_header *hdr = oir->rpcdata;
-
- oir->status = hdr->task.tk_status = status;
- if (status >= 0) {
- hdr->res.count = status;
- hdr->verf.committed = oir->committed;
- } else {
- hdr->pnfs_error = status;
- }
- objlayout_iodone(oir);
- /* must not use oir after this point */
-
- dprintk("%s: Return status %zd committed %d sync=%d\n", __func__,
- status, hdr->verf.committed, sync);
-
- if (sync)
- pnfs_ld_write_done(hdr);
- else {
- INIT_WORK(&hdr->task.u.tk_work, _rpc_write_complete);
- schedule_work(&hdr->task.u.tk_work);
- }
-}
-
-/*
- * Perform sync or async writes.
- */
-enum pnfs_try_status
-objlayout_write_pagelist(struct nfs_pgio_header *hdr, int how)
-{
- int err;
-
- _fix_verify_io_params(hdr->lseg, &hdr->args.pages,
- &hdr->args.pgbase,
- hdr->args.offset, hdr->args.count);
-
- err = objio_write_pagelist(hdr, how);
- if (unlikely(err)) {
- hdr->pnfs_error = err;
- dprintk("%s: Returned Error %d\n", __func__, err);
- return PNFS_NOT_ATTEMPTED;
- }
- return PNFS_ATTEMPTED;
-}
-
-void
-objlayout_encode_layoutcommit(struct pnfs_layout_hdr *pnfslay,
- struct xdr_stream *xdr,
- const struct nfs4_layoutcommit_args *args)
-{
- struct objlayout *objlay = OBJLAYOUT(pnfslay);
- struct pnfs_osd_layoutupdate lou;
- __be32 *start;
-
- dprintk("%s: Begin\n", __func__);
-
- spin_lock(&objlay->lock);
- lou.dsu_valid = (objlay->delta_space_valid == OBJ_DSU_VALID);
- lou.dsu_delta = objlay->delta_space_used;
- objlay->delta_space_used = 0;
- objlay->delta_space_valid = OBJ_DSU_INIT;
- lou.olu_ioerr_flag = !list_empty(&objlay->err_list);
- spin_unlock(&objlay->lock);
-
- start = xdr_reserve_space(xdr, 4);
-
- BUG_ON(pnfs_osd_xdr_encode_layoutupdate(xdr, &lou));
-
- *start = cpu_to_be32((xdr->p - start - 1) * 4);
-
- dprintk("%s: Return delta_space_used %lld err %d\n", __func__,
- lou.dsu_delta, lou.olu_ioerr_flag);
-}
-
-static int
-err_prio(u32 oer_errno)
-{
- switch (oer_errno) {
- case 0:
- return 0;
-
- case PNFS_OSD_ERR_RESOURCE:
- return OSD_ERR_PRI_RESOURCE;
- case PNFS_OSD_ERR_BAD_CRED:
- return OSD_ERR_PRI_BAD_CRED;
- case PNFS_OSD_ERR_NO_ACCESS:
- return OSD_ERR_PRI_NO_ACCESS;
- case PNFS_OSD_ERR_UNREACHABLE:
- return OSD_ERR_PRI_UNREACHABLE;
- case PNFS_OSD_ERR_NOT_FOUND:
- return OSD_ERR_PRI_NOT_FOUND;
- case PNFS_OSD_ERR_NO_SPACE:
- return OSD_ERR_PRI_NO_SPACE;
- default:
- WARN_ON(1);
- /* fallthrough */
- case PNFS_OSD_ERR_EIO:
- return OSD_ERR_PRI_EIO;
- }
-}
-
-static void
-merge_ioerr(struct pnfs_osd_ioerr *dest_err,
- const struct pnfs_osd_ioerr *src_err)
-{
- u64 dest_end, src_end;
-
- if (!dest_err->oer_errno) {
- *dest_err = *src_err;
- /* accumulated device must be blank */
- memset(&dest_err->oer_component.oid_device_id, 0,
- sizeof(dest_err->oer_component.oid_device_id));
-
- return;
- }
-
- if (dest_err->oer_component.oid_partition_id !=
- src_err->oer_component.oid_partition_id)
- dest_err->oer_component.oid_partition_id = 0;
-
- if (dest_err->oer_component.oid_object_id !=
- src_err->oer_component.oid_object_id)
- dest_err->oer_component.oid_object_id = 0;
-
- if (dest_err->oer_comp_offset > src_err->oer_comp_offset)
- dest_err->oer_comp_offset = src_err->oer_comp_offset;
-
- dest_end = end_offset(dest_err->oer_comp_offset,
- dest_err->oer_comp_length);
- src_end = end_offset(src_err->oer_comp_offset,
- src_err->oer_comp_length);
- if (dest_end < src_end)
- dest_end = src_end;
-
- dest_err->oer_comp_length = dest_end - dest_err->oer_comp_offset;
-
- if ((src_err->oer_iswrite == dest_err->oer_iswrite) &&
- (err_prio(src_err->oer_errno) > err_prio(dest_err->oer_errno))) {
- dest_err->oer_errno = src_err->oer_errno;
- } else if (src_err->oer_iswrite) {
- dest_err->oer_iswrite = true;
- dest_err->oer_errno = src_err->oer_errno;
- }
-}
-
-static void
-encode_accumulated_error(struct objlayout *objlay, __be32 *p)
-{
- struct objlayout_io_res *oir, *tmp;
- struct pnfs_osd_ioerr accumulated_err = {.oer_errno = 0};
-
- list_for_each_entry_safe(oir, tmp, &objlay->err_list, err_list) {
- unsigned i;
-
- for (i = 0; i < oir->num_comps; i++) {
- struct pnfs_osd_ioerr *ioerr = &oir->ioerrs[i];
-
- if (!ioerr->oer_errno)
- continue;
-
- printk(KERN_ERR "NFS: %s: err[%d]: errno=%d "
- "is_write=%d dev(%llx:%llx) par=0x%llx "
- "obj=0x%llx offset=0x%llx length=0x%llx\n",
- __func__, i, ioerr->oer_errno,
- ioerr->oer_iswrite,
- _DEVID_LO(&ioerr->oer_component.oid_device_id),
- _DEVID_HI(&ioerr->oer_component.oid_device_id),
- ioerr->oer_component.oid_partition_id,
- ioerr->oer_component.oid_object_id,
- ioerr->oer_comp_offset,
- ioerr->oer_comp_length);
-
- merge_ioerr(&accumulated_err, ioerr);
- }
- list_del(&oir->err_list);
- objio_free_result(oir);
- }
-
- pnfs_osd_xdr_encode_ioerr(p, &accumulated_err);
-}
-
-void
-objlayout_encode_layoutreturn(struct xdr_stream *xdr,
- const struct nfs4_layoutreturn_args *args)
-{
- struct pnfs_layout_hdr *pnfslay = args->layout;
- struct objlayout *objlay = OBJLAYOUT(pnfslay);
- struct objlayout_io_res *oir, *tmp;
- __be32 *start;
-
- dprintk("%s: Begin\n", __func__);
- start = xdr_reserve_space(xdr, 4);
- BUG_ON(!start);
-
- spin_lock(&objlay->lock);
-
- list_for_each_entry_safe(oir, tmp, &objlay->err_list, err_list) {
- __be32 *last_xdr = NULL, *p;
- unsigned i;
- int res = 0;
-
- for (i = 0; i < oir->num_comps; i++) {
- struct pnfs_osd_ioerr *ioerr = &oir->ioerrs[i];
-
- if (!ioerr->oer_errno)
- continue;
-
- dprintk("%s: err[%d]: errno=%d is_write=%d "
- "dev(%llx:%llx) par=0x%llx obj=0x%llx "
- "offset=0x%llx length=0x%llx\n",
- __func__, i, ioerr->oer_errno,
- ioerr->oer_iswrite,
- _DEVID_LO(&ioerr->oer_component.oid_device_id),
- _DEVID_HI(&ioerr->oer_component.oid_device_id),
- ioerr->oer_component.oid_partition_id,
- ioerr->oer_component.oid_object_id,
- ioerr->oer_comp_offset,
- ioerr->oer_comp_length);
-
- p = pnfs_osd_xdr_ioerr_reserve_space(xdr);
- if (unlikely(!p)) {
- res = -E2BIG;
- break; /* accumulated_error */
- }
-
- last_xdr = p;
- pnfs_osd_xdr_encode_ioerr(p, &oir->ioerrs[i]);
- }
-
- /* TODO: use xdr_write_pages */
- if (unlikely(res)) {
- /* no space for even one error descriptor */
- BUG_ON(!last_xdr);
-
- /* we've encountered a situation with lots and lots of
- * errors and no space to encode them all. Use the last
- * available slot to report the union of all the
- * remaining errors.
- */
- encode_accumulated_error(objlay, last_xdr);
- goto loop_done;
- }
- list_del(&oir->err_list);
- objio_free_result(oir);
- }
-loop_done:
- spin_unlock(&objlay->lock);
-
- *start = cpu_to_be32((xdr->p - start - 1) * 4);
- dprintk("%s: Return\n", __func__);
-}
-
-enum {
- OBJLAYOUT_MAX_URI_LEN = 256, OBJLAYOUT_MAX_OSDNAME_LEN = 64,
- OBJLAYOUT_MAX_SYSID_HEX_LEN = OSD_SYSTEMID_LEN * 2 + 1,
- OSD_LOGIN_UPCALL_PATHLEN = 256
-};
-
-static char osd_login_prog[OSD_LOGIN_UPCALL_PATHLEN] = "/sbin/osd_login";
-
-module_param_string(osd_login_prog, osd_login_prog, sizeof(osd_login_prog),
- 0600);
-MODULE_PARM_DESC(osd_login_prog, "Path to the osd_login upcall program");
-
-struct __auto_login {
- char uri[OBJLAYOUT_MAX_URI_LEN];
- char osdname[OBJLAYOUT_MAX_OSDNAME_LEN];
- char systemid_hex[OBJLAYOUT_MAX_SYSID_HEX_LEN];
-};
-
-static int __objlayout_upcall(struct __auto_login *login)
-{
- static char *envp[] = { "HOME=/",
- "TERM=linux",
- "PATH=/sbin:/usr/sbin:/bin:/usr/bin",
- NULL
- };
- char *argv[8];
- int ret;
-
- if (unlikely(!osd_login_prog[0])) {
- dprintk("%s: osd_login_prog is disabled\n", __func__);
- return -EACCES;
- }
-
- dprintk("%s uri: %s\n", __func__, login->uri);
- dprintk("%s osdname %s\n", __func__, login->osdname);
- dprintk("%s systemid_hex %s\n", __func__, login->systemid_hex);
-
- argv[0] = (char *)osd_login_prog;
- argv[1] = "-u";
- argv[2] = login->uri;
- argv[3] = "-o";
- argv[4] = login->osdname;
- argv[5] = "-s";
- argv[6] = login->systemid_hex;
- argv[7] = NULL;
-
- ret = call_usermodehelper(argv[0], argv, envp, UMH_WAIT_PROC);
- /*
- * Disable the upcall mechanism if we're getting an ENOENT or
- * EACCES error. The admin can re-enable it on the fly by using
- * sysfs to set the objlayoutdriver.osd_login_prog module parameter once
- * the problem has been fixed.
- */
- if (ret == -ENOENT || ret == -EACCES) {
- printk(KERN_ERR "PNFS-OBJ: %s was not found please set "
- "objlayoutdriver.osd_login_prog kernel parameter!\n",
- osd_login_prog);
- osd_login_prog[0] = '\0';
- }
- dprintk("%s %s return value: %d\n", __func__, osd_login_prog, ret);
-
- return ret;
-}
-
-/* Assume dest is all zeros */
-static void __copy_nfsS_and_zero_terminate(struct nfs4_string s,
- char *dest, int max_len,
- const char *var_name)
-{
- if (!s.len)
- return;
-
- if (s.len >= max_len) {
- pr_warn_ratelimited(
- "objlayout_autologin: %s: s.len(%d) >= max_len(%d)",
- var_name, s.len, max_len);
- s.len = max_len - 1; /* space for null terminator */
- }
-
- memcpy(dest, s.data, s.len);
-}
-
-/* Assume sysid is all zeros */
-static void _sysid_2_hex(struct nfs4_string s,
- char sysid[OBJLAYOUT_MAX_SYSID_HEX_LEN])
-{
- int i;
- char *cur;
-
- if (!s.len)
- return;
-
- if (s.len != OSD_SYSTEMID_LEN) {
- pr_warn_ratelimited(
- "objlayout_autologin: systemid_len(%d) != OSD_SYSTEMID_LEN",
- s.len);
- if (s.len > OSD_SYSTEMID_LEN)
- s.len = OSD_SYSTEMID_LEN;
- }
-
- cur = sysid;
- for (i = 0; i < s.len; i++)
- cur = hex_byte_pack(cur, s.data[i]);
-}
-
-int objlayout_autologin(struct pnfs_osd_deviceaddr *deviceaddr)
-{
- int rc;
- struct __auto_login login;
-
- if (!deviceaddr->oda_targetaddr.ota_netaddr.r_addr.len)
- return -ENODEV;
-
- memset(&login, 0, sizeof(login));
- __copy_nfsS_and_zero_terminate(
- deviceaddr->oda_targetaddr.ota_netaddr.r_addr,
- login.uri, sizeof(login.uri), "URI");
-
- __copy_nfsS_and_zero_terminate(
- deviceaddr->oda_osdname,
- login.osdname, sizeof(login.osdname), "OSDNAME");
-
- _sysid_2_hex(deviceaddr->oda_systemid, login.systemid_hex);
-
- rc = __objlayout_upcall(&login);
- if (rc > 0) /* script returns positive values */
- rc = -ENODEV;
-
- return rc;
-}
+++ /dev/null
-/*
- * Data types and function declerations for interfacing with the
- * pNFS standard object layout driver.
- *
- * Copyright (C) 2007 Panasas Inc. [year of first publication]
- * All rights reserved.
- *
- * Benny Halevy <bhalevy@panasas.com>
- * Boaz Harrosh <ooo@electrozaur.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2
- * See the file COPYING included with this distribution for more details.
- *
- * 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. Neither the name of the Panasas company nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED ``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 REGENTS 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.
- */
-
-#ifndef _OBJLAYOUT_H
-#define _OBJLAYOUT_H
-
-#include <linux/nfs_fs.h>
-#include <linux/pnfs_osd_xdr.h>
-#include "../pnfs.h"
-
-/*
- * per-inode layout
- */
-struct objlayout {
- struct pnfs_layout_hdr pnfs_layout;
-
- /* for layout_commit */
- enum osd_delta_space_valid_enum {
- OBJ_DSU_INIT = 0,
- OBJ_DSU_VALID,
- OBJ_DSU_INVALID,
- } delta_space_valid;
- s64 delta_space_used; /* consumed by write ops */
-
- /* for layout_return */
- spinlock_t lock;
- struct list_head err_list;
-};
-
-static inline struct objlayout *
-OBJLAYOUT(struct pnfs_layout_hdr *lo)
-{
- return container_of(lo, struct objlayout, pnfs_layout);
-}
-
-/*
- * per-I/O operation state
- * embedded in objects provider io_state data structure
- */
-struct objlayout_io_res {
- struct objlayout *objlay;
-
- void *rpcdata;
- int status; /* res */
- int committed; /* res */
-
- /* Error reporting (layout_return) */
- struct list_head err_list;
- unsigned num_comps;
- /* Pointer to array of error descriptors of size num_comps.
- * It should contain as many entries as devices in the osd_layout
- * that participate in the I/O. It is up to the io_engine to allocate
- * needed space and set num_comps.
- */
- struct pnfs_osd_ioerr *ioerrs;
-};
-
-static inline
-void objlayout_init_ioerrs(struct objlayout_io_res *oir, unsigned num_comps,
- struct pnfs_osd_ioerr *ioerrs, void *rpcdata,
- struct pnfs_layout_hdr *pnfs_layout_type)
-{
- oir->objlay = OBJLAYOUT(pnfs_layout_type);
- oir->rpcdata = rpcdata;
- INIT_LIST_HEAD(&oir->err_list);
- oir->num_comps = num_comps;
- oir->ioerrs = ioerrs;
-}
-
-/*
- * Raid engine I/O API
- */
-extern int objio_alloc_lseg(struct pnfs_layout_segment **outp,
- struct pnfs_layout_hdr *pnfslay,
- struct pnfs_layout_range *range,
- struct xdr_stream *xdr,
- gfp_t gfp_flags);
-extern void objio_free_lseg(struct pnfs_layout_segment *lseg);
-
-/* objio_free_result will free these @oir structs received from
- * objlayout_{read,write}_done
- */
-extern void objio_free_result(struct objlayout_io_res *oir);
-
-extern int objio_read_pagelist(struct nfs_pgio_header *rdata);
-extern int objio_write_pagelist(struct nfs_pgio_header *wdata, int how);
-
-/*
- * callback API
- */
-extern void objlayout_io_set_result(struct objlayout_io_res *oir,
- unsigned index, struct pnfs_osd_objid *pooid,
- int osd_error, u64 offset, u64 length, bool is_write);
-
-static inline void
-objlayout_add_delta_space_used(struct objlayout *objlay, s64 space_used)
-{
- /* If one of the I/Os errored out and the delta_space_used was
- * invalid we render the complete report as invalid. Protocol mandate
- * the DSU be accurate or not reported.
- */
- spin_lock(&objlay->lock);
- if (objlay->delta_space_valid != OBJ_DSU_INVALID) {
- objlay->delta_space_valid = OBJ_DSU_VALID;
- objlay->delta_space_used += space_used;
- }
- spin_unlock(&objlay->lock);
-}
-
-extern void objlayout_read_done(struct objlayout_io_res *oir,
- ssize_t status, bool sync);
-extern void objlayout_write_done(struct objlayout_io_res *oir,
- ssize_t status, bool sync);
-
-/*
- * exported generic objects function vectors
- */
-
-extern struct pnfs_layout_hdr *objlayout_alloc_layout_hdr(struct inode *, gfp_t gfp_flags);
-extern void objlayout_free_layout_hdr(struct pnfs_layout_hdr *);
-
-extern struct pnfs_layout_segment *objlayout_alloc_lseg(
- struct pnfs_layout_hdr *,
- struct nfs4_layoutget_res *,
- gfp_t gfp_flags);
-extern void objlayout_free_lseg(struct pnfs_layout_segment *);
-
-extern enum pnfs_try_status objlayout_read_pagelist(
- struct nfs_pgio_header *);
-
-extern enum pnfs_try_status objlayout_write_pagelist(
- struct nfs_pgio_header *,
- int how);
-
-extern void objlayout_encode_layoutcommit(
- struct pnfs_layout_hdr *,
- struct xdr_stream *,
- const struct nfs4_layoutcommit_args *);
-
-extern void objlayout_encode_layoutreturn(
- struct xdr_stream *,
- const struct nfs4_layoutreturn_args *);
-
-extern int objlayout_autologin(struct pnfs_osd_deviceaddr *deviceaddr);
-
-#endif /* _OBJLAYOUT_H */
+++ /dev/null
-/*
- * Object-Based pNFS Layout XDR layer
- *
- * Copyright (C) 2007 Panasas Inc. [year of first publication]
- * All rights reserved.
- *
- * Benny Halevy <bhalevy@panasas.com>
- * Boaz Harrosh <ooo@electrozaur.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2
- * See the file COPYING included with this distribution for more details.
- *
- * 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. Neither the name of the Panasas company nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED ``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 REGENTS 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 <linux/pnfs_osd_xdr.h>
-
-#define NFSDBG_FACILITY NFSDBG_PNFS_LD
-
-/*
- * The following implementation is based on RFC5664
- */
-
-/*
- * struct pnfs_osd_objid {
- * struct nfs4_deviceid oid_device_id;
- * u64 oid_partition_id;
- * u64 oid_object_id;
- * }; // xdr size 32 bytes
- */
-static __be32 *
-_osd_xdr_decode_objid(__be32 *p, struct pnfs_osd_objid *objid)
-{
- p = xdr_decode_opaque_fixed(p, objid->oid_device_id.data,
- sizeof(objid->oid_device_id.data));
-
- p = xdr_decode_hyper(p, &objid->oid_partition_id);
- p = xdr_decode_hyper(p, &objid->oid_object_id);
- return p;
-}
-/*
- * struct pnfs_osd_opaque_cred {
- * u32 cred_len;
- * void *cred;
- * }; // xdr size [variable]
- * The return pointers are from the xdr buffer
- */
-static int
-_osd_xdr_decode_opaque_cred(struct pnfs_osd_opaque_cred *opaque_cred,
- struct xdr_stream *xdr)
-{
- __be32 *p = xdr_inline_decode(xdr, 1);
-
- if (!p)
- return -EINVAL;
-
- opaque_cred->cred_len = be32_to_cpu(*p++);
-
- p = xdr_inline_decode(xdr, opaque_cred->cred_len);
- if (!p)
- return -EINVAL;
-
- opaque_cred->cred = p;
- return 0;
-}
-
-/*
- * struct pnfs_osd_object_cred {
- * struct pnfs_osd_objid oc_object_id;
- * u32 oc_osd_version;
- * u32 oc_cap_key_sec;
- * struct pnfs_osd_opaque_cred oc_cap_key
- * struct pnfs_osd_opaque_cred oc_cap;
- * }; // xdr size 32 + 4 + 4 + [variable] + [variable]
- */
-static int
-_osd_xdr_decode_object_cred(struct pnfs_osd_object_cred *comp,
- struct xdr_stream *xdr)
-{
- __be32 *p = xdr_inline_decode(xdr, 32 + 4 + 4);
- int ret;
-
- if (!p)
- return -EIO;
-
- p = _osd_xdr_decode_objid(p, &comp->oc_object_id);
- comp->oc_osd_version = be32_to_cpup(p++);
- comp->oc_cap_key_sec = be32_to_cpup(p);
-
- ret = _osd_xdr_decode_opaque_cred(&comp->oc_cap_key, xdr);
- if (unlikely(ret))
- return ret;
-
- ret = _osd_xdr_decode_opaque_cred(&comp->oc_cap, xdr);
- return ret;
-}
-
-/*
- * struct pnfs_osd_data_map {
- * u32 odm_num_comps;
- * u64 odm_stripe_unit;
- * u32 odm_group_width;
- * u32 odm_group_depth;
- * u32 odm_mirror_cnt;
- * u32 odm_raid_algorithm;
- * }; // xdr size 4 + 8 + 4 + 4 + 4 + 4
- */
-static inline int
-_osd_data_map_xdr_sz(void)
-{
- return 4 + 8 + 4 + 4 + 4 + 4;
-}
-
-static __be32 *
-_osd_xdr_decode_data_map(__be32 *p, struct pnfs_osd_data_map *data_map)
-{
- data_map->odm_num_comps = be32_to_cpup(p++);
- p = xdr_decode_hyper(p, &data_map->odm_stripe_unit);
- data_map->odm_group_width = be32_to_cpup(p++);
- data_map->odm_group_depth = be32_to_cpup(p++);
- data_map->odm_mirror_cnt = be32_to_cpup(p++);
- data_map->odm_raid_algorithm = be32_to_cpup(p++);
- dprintk("%s: odm_num_comps=%u odm_stripe_unit=%llu odm_group_width=%u "
- "odm_group_depth=%u odm_mirror_cnt=%u odm_raid_algorithm=%u\n",
- __func__,
- data_map->odm_num_comps,
- (unsigned long long)data_map->odm_stripe_unit,
- data_map->odm_group_width,
- data_map->odm_group_depth,
- data_map->odm_mirror_cnt,
- data_map->odm_raid_algorithm);
- return p;
-}
-
-int pnfs_osd_xdr_decode_layout_map(struct pnfs_osd_layout *layout,
- struct pnfs_osd_xdr_decode_layout_iter *iter, struct xdr_stream *xdr)
-{
- __be32 *p;
-
- memset(iter, 0, sizeof(*iter));
-
- p = xdr_inline_decode(xdr, _osd_data_map_xdr_sz() + 4 + 4);
- if (unlikely(!p))
- return -EINVAL;
-
- p = _osd_xdr_decode_data_map(p, &layout->olo_map);
- layout->olo_comps_index = be32_to_cpup(p++);
- layout->olo_num_comps = be32_to_cpup(p++);
- dprintk("%s: olo_comps_index=%d olo_num_comps=%d\n", __func__,
- layout->olo_comps_index, layout->olo_num_comps);
-
- iter->total_comps = layout->olo_num_comps;
- return 0;
-}
-
-bool pnfs_osd_xdr_decode_layout_comp(struct pnfs_osd_object_cred *comp,
- struct pnfs_osd_xdr_decode_layout_iter *iter, struct xdr_stream *xdr,
- int *err)
-{
- BUG_ON(iter->decoded_comps > iter->total_comps);
- if (iter->decoded_comps == iter->total_comps)
- return false;
-
- *err = _osd_xdr_decode_object_cred(comp, xdr);
- if (unlikely(*err)) {
- dprintk("%s: _osd_xdr_decode_object_cred=>%d decoded_comps=%d "
- "total_comps=%d\n", __func__, *err,
- iter->decoded_comps, iter->total_comps);
- return false; /* stop the loop */
- }
- dprintk("%s: dev(%llx:%llx) par=0x%llx obj=0x%llx "
- "key_len=%u cap_len=%u\n",
- __func__,
- _DEVID_LO(&comp->oc_object_id.oid_device_id),
- _DEVID_HI(&comp->oc_object_id.oid_device_id),
- comp->oc_object_id.oid_partition_id,
- comp->oc_object_id.oid_object_id,
- comp->oc_cap_key.cred_len, comp->oc_cap.cred_len);
-
- iter->decoded_comps++;
- return true;
-}
-
-/*
- * Get Device Information Decoding
- *
- * Note: since Device Information is currently done synchronously, all
- * variable strings fields are left inside the rpc buffer and are only
- * pointed to by the pnfs_osd_deviceaddr members. So the read buffer
- * should not be freed while the returned information is in use.
- */
-/*
- *struct nfs4_string {
- * unsigned int len;
- * char *data;
- *}; // size [variable]
- * NOTE: Returned string points to inside the XDR buffer
- */
-static __be32 *
-__read_u8_opaque(__be32 *p, struct nfs4_string *str)
-{
- str->len = be32_to_cpup(p++);
- str->data = (char *)p;
-
- p += XDR_QUADLEN(str->len);
- return p;
-}
-
-/*
- * struct pnfs_osd_targetid {
- * u32 oti_type;
- * struct nfs4_string oti_scsi_device_id;
- * };// size 4 + [variable]
- */
-static __be32 *
-__read_targetid(__be32 *p, struct pnfs_osd_targetid* targetid)
-{
- u32 oti_type;
-
- oti_type = be32_to_cpup(p++);
- targetid->oti_type = oti_type;
-
- switch (oti_type) {
- case OBJ_TARGET_SCSI_NAME:
- case OBJ_TARGET_SCSI_DEVICE_ID:
- p = __read_u8_opaque(p, &targetid->oti_scsi_device_id);
- }
-
- return p;
-}
-
-/*
- * struct pnfs_osd_net_addr {
- * struct nfs4_string r_netid;
- * struct nfs4_string r_addr;
- * };
- */
-static __be32 *
-__read_net_addr(__be32 *p, struct pnfs_osd_net_addr* netaddr)
-{
- p = __read_u8_opaque(p, &netaddr->r_netid);
- p = __read_u8_opaque(p, &netaddr->r_addr);
-
- return p;
-}
-
-/*
- * struct pnfs_osd_targetaddr {
- * u32 ota_available;
- * struct pnfs_osd_net_addr ota_netaddr;
- * };
- */
-static __be32 *
-__read_targetaddr(__be32 *p, struct pnfs_osd_targetaddr *targetaddr)
-{
- u32 ota_available;
-
- ota_available = be32_to_cpup(p++);
- targetaddr->ota_available = ota_available;
-
- if (ota_available)
- p = __read_net_addr(p, &targetaddr->ota_netaddr);
-
-
- return p;
-}
-
-/*
- * struct pnfs_osd_deviceaddr {
- * struct pnfs_osd_targetid oda_targetid;
- * struct pnfs_osd_targetaddr oda_targetaddr;
- * u8 oda_lun[8];
- * struct nfs4_string oda_systemid;
- * struct pnfs_osd_object_cred oda_root_obj_cred;
- * struct nfs4_string oda_osdname;
- * };
- */
-
-/* We need this version for the pnfs_osd_xdr_decode_deviceaddr which does
- * not have an xdr_stream
- */
-static __be32 *
-__read_opaque_cred(__be32 *p,
- struct pnfs_osd_opaque_cred *opaque_cred)
-{
- opaque_cred->cred_len = be32_to_cpu(*p++);
- opaque_cred->cred = p;
- return p + XDR_QUADLEN(opaque_cred->cred_len);
-}
-
-static __be32 *
-__read_object_cred(__be32 *p, struct pnfs_osd_object_cred *comp)
-{
- p = _osd_xdr_decode_objid(p, &comp->oc_object_id);
- comp->oc_osd_version = be32_to_cpup(p++);
- comp->oc_cap_key_sec = be32_to_cpup(p++);
-
- p = __read_opaque_cred(p, &comp->oc_cap_key);
- p = __read_opaque_cred(p, &comp->oc_cap);
- return p;
-}
-
-void pnfs_osd_xdr_decode_deviceaddr(
- struct pnfs_osd_deviceaddr *deviceaddr, __be32 *p)
-{
- p = __read_targetid(p, &deviceaddr->oda_targetid);
-
- p = __read_targetaddr(p, &deviceaddr->oda_targetaddr);
-
- p = xdr_decode_opaque_fixed(p, deviceaddr->oda_lun,
- sizeof(deviceaddr->oda_lun));
-
- p = __read_u8_opaque(p, &deviceaddr->oda_systemid);
-
- p = __read_object_cred(p, &deviceaddr->oda_root_obj_cred);
-
- p = __read_u8_opaque(p, &deviceaddr->oda_osdname);
-
- /* libosd likes this terminated in dbg. It's last, so no problems */
- deviceaddr->oda_osdname.data[deviceaddr->oda_osdname.len] = 0;
-}
-
-/*
- * struct pnfs_osd_layoutupdate {
- * u32 dsu_valid;
- * s64 dsu_delta;
- * u32 olu_ioerr_flag;
- * }; xdr size 4 + 8 + 4
- */
-int
-pnfs_osd_xdr_encode_layoutupdate(struct xdr_stream *xdr,
- struct pnfs_osd_layoutupdate *lou)
-{
- __be32 *p = xdr_reserve_space(xdr, 4 + 8 + 4);
-
- if (!p)
- return -E2BIG;
-
- *p++ = cpu_to_be32(lou->dsu_valid);
- if (lou->dsu_valid)
- p = xdr_encode_hyper(p, lou->dsu_delta);
- *p++ = cpu_to_be32(lou->olu_ioerr_flag);
- return 0;
-}
-
-/*
- * struct pnfs_osd_objid {
- * struct nfs4_deviceid oid_device_id;
- * u64 oid_partition_id;
- * u64 oid_object_id;
- * }; // xdr size 32 bytes
- */
-static inline __be32 *
-pnfs_osd_xdr_encode_objid(__be32 *p, struct pnfs_osd_objid *object_id)
-{
- p = xdr_encode_opaque_fixed(p, &object_id->oid_device_id.data,
- sizeof(object_id->oid_device_id.data));
- p = xdr_encode_hyper(p, object_id->oid_partition_id);
- p = xdr_encode_hyper(p, object_id->oid_object_id);
-
- return p;
-}
-
-/*
- * struct pnfs_osd_ioerr {
- * struct pnfs_osd_objid oer_component;
- * u64 oer_comp_offset;
- * u64 oer_comp_length;
- * u32 oer_iswrite;
- * u32 oer_errno;
- * }; // xdr size 32 + 24 bytes
- */
-void pnfs_osd_xdr_encode_ioerr(__be32 *p, struct pnfs_osd_ioerr *ioerr)
-{
- p = pnfs_osd_xdr_encode_objid(p, &ioerr->oer_component);
- p = xdr_encode_hyper(p, ioerr->oer_comp_offset);
- p = xdr_encode_hyper(p, ioerr->oer_comp_length);
- *p++ = cpu_to_be32(ioerr->oer_iswrite);
- *p = cpu_to_be32(ioerr->oer_errno);
-}
-
-__be32 *pnfs_osd_xdr_ioerr_reserve_space(struct xdr_stream *xdr)
-{
- __be32 *p;
-
- p = xdr_reserve_space(xdr, 32 + 24);
- if (unlikely(!p))
- dprintk("%s: out of xdr space\n", __func__);
-
- return p;
-}
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff