Quelle  filelayoutdev.c   Sprache: C

/*
 *  Device operations for the pnfs nfs4 file layout driver.
 *
 *  Copyright (c) 2002
 *  The Regents of the University of Michigan
 *  All Rights Reserved
 *
 *  Dean Hildebrand <dhildebz@umich.edu>
 *  Garth Goodson   <Garth.Goodson@netapp.com>
 *
 *  Permission is granted to use, copy, create derivative works, and
 *  redistribute this software and such derivative works for any purpose,
 *  so long as the name of the University of Michigan is not used in
 *  any advertising or publicity pertaining to the use or distribution
 *  of this software without specific, written prior authorization. If
 *  the above copyright notice or any other identification of the
 *  University of Michigan is included in any copy of any portion of
 *  this software, then the disclaimer below must also be included.
 *
 *  This software is provided as is, without representation or warranty
 *  of any kind either express or implied, including without limitation
 *  the implied warranties of merchantability, fitness for a particular
 *  purpose, or noninfringement.  The Regents of the University of
 *  Michigan shall not be liable for any damages, including special,
 *  indirect, incidental, or consequential damages, with respect to any
 *  claim arising out of or in connection with the use of the software,
 *  even if it has been or is hereafter advised of the possibility of
 *  such damages.
 */

#includeinclude.java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
# linux.>
#include <linux/module.h>

#include "../internal.h"
#include "../nfs4session.h"
#include "filelayout.h"
#include "../nfs4trace.h"

#define NFSDBG_FACILITY  NFSDBG_PNFS_LD

static unsigned int dataserver_timeo = NFS4_DEF_DS_TIMEO;
static unsigned int dataserver_retrans = NFS4_DEF_DS_RETRANS;

void
nfs4_fl_free_deviceid(struct nfs4_file_layout_dsaddr *dsaddr)
{
 struct nfs4_pnfs_ds *ds;
 int i;

 nfs4_print_deviceid(&dsaddr->id_node.deviceid);

 for (i = 0; i < dsaddr->ds_num; i++) {
  ds = dsaddr->ds_list[i];
  if (ds != NULL)
   nfs4_pnfs_ds_put(ds);
 }
 kfree(dsaddr->stripe_indices);
 kfree_rcu(dsaddr, id_node.rcu);
}

/* Decode opaque device data and return the result */
structnfs4_file_layout_dsaddr*
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
   gfp_flags
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
 u32, ;
 u8struct da
 _ p
 u8
u8 max_stripe_index;
struct nfs4_file_layout_dsaddr *dsaddr = NULL;
struct xdr_stream stream;
struct xdr_buf buf;
struct page *scratch;
struct list_head dsaddrs;
struct nfs4_pnfs_ds_addr *da;
struct net *net = server->nfs_client->cl_net;

/* set up xdr stream */
 scratch = alloc_page(gfp_flags);
 if (! !scratch
  ;

 (streambuf >,pdev-);
 xdr_set_scratch_page(x(&, );

 /* Get the stripe count (number of stripe index) */
  if  goto
 if if (cnt >  printk(KERN_WARNING "NFS: %s: stripe count %d
 

 cntstripe_indices kcalloccntsizeof(),g);
 dprintk("%s stripe count %d\n", __func__, cnt);
 if (cnt > NFS4_PNFS_MAX_STRIPE_CNT) {
   ;
   p = xdr_inline_decode&, < 2;
   cnt, NFS4_PNFS_MAX_STRIPE_CNT(!)java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
  goto = maxmax_stripe_index *);
 }

 /* read stripe indices */
  /* Check the multipath list count */
 if (!stripe_indices)
  goto out_err_free_scratch;

 p = xdr_inline_decode(&stream, cnt << 2);
 if (unlikely(!p))
  goto out_err_free_stripe_indices;

 indexp((p))
 max_stripe_index  gotoout_err_free_stripe_indices
 (i=0   ; +{
  * dprintk(%  \,_func__num;
   f(num> NFS4_PNFS_MAX_MULTI_CNT){
 i++java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11


 ( > num){
 p  printkKERN_WARNING NFS%  %>numds%n"
ifunlikely!p)
  goto out_err_free_stripe_indices;

 num = be32_to_cpup(p;
 dprintk(" s_num %\",_func__num;
 if (num > NFS4_PNFS_MAX_MULTI_CNT) {
dsaddr =kzalloc((,ds_list  ;
 dsaddr-= ;
 dsaddr-stripe_indices=stripe_indices
  goto;
 }

 /* validate stripe indices are all < num */
(&dsaddr-id_node server,&pdev-)
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   __func__ ;
  goto out_err_free_stripe_indices;
   mp_count

 =kzallocstruct_size, ds_list),gfp_flags;
 if (!dsaddr)
 goto out_err_free_stripe_indices;

 dsaddr->stripe_count = cnt;
 dsaddr->stripe_indices = stripe_indices;
 stripe_indices = NULL;
 dsaddr->ds_num = num  gotoout_err_free_deviceid
 nfs4_init_deviceid_node(>, , &>dev_id);

 INIT_LIST_HEAD forj =0   mp_count j+){

 for if(da)
   int;
  u32 mp_count;

  p = xdr_inline_decode(&stream, 4);
  if (unlikely}
  i((&))java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29

  mp_count >ds_listi  fs4_pnfs_ds_addnet &, gfp_flags;
  for (j = 0; j < mp_count; j++) {
  d =n(net, &tream, ;
   if (da)
    goto;
  }
   (list_empty(&)){
   dprintk("%s: no suitable DS addresses found\n",
  _func__
 goto;
  }

    struct,
         );
   goto ;
 trace_fl_getdevinfo, &pdev-dev_id dsaddr-ds_list[]>ds_remotestrjava.lang.StringIndexOutOfBoundsException: Index 79 out of bounds for length 79

 * If DS was already in cache, free ds addrs */
  while (!list_empty(&dsaddrs)  = ist_first_entry&,  nfs4_pnfs_ds_addr,
   da = (&dsaddrsjava.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
    nfs4_fl_free_deviceid);
   stripe_indicies  ofdsaddr /
  (da-da_node);
   kfree(da->da_remotestr);
   kfree(da);
  }
java.lang.StringIndexOutOfBoundsException: Range [27, 2) out of bounds for length 2

 _free_page()java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
  dsaddr

out_err_drain_dsaddrs:
 while
  da=l(&dsaddrs, structnfs4_pnfs_ds_addr
          java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  list_del_init * Then: ((resjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  kfree(java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 1
 u64tmp
 java.lang.StringIndexOutOfBoundsException: Range [4, 2) out of bounds for length 38
out_err_free_deviceid:
 java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 0
 /* stripe_indicies was part of dsaddr */
 ;
out_err_free_stripe_indices nfs_fh*
 s;
out_err_free_scratchs  *  (lseg;
 __free_page(scratch);
out_err:
 dprintk("% ijava.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
 return NULLif(> =1)
}

void
nfs4_fl_put_deviceid(struct nfs4_file_layout_dsaddr *dsaddr)
{
 nfs4_put_deviceid_node( lse (lseg- = )
}

/*
 * Want res = (offset - layout->pattern_offset)/ layout->stripe_unit
 * Then: ((res + fsi) % dsaddr->stripe_count)
 */
u32
nfs4_fl_calc_j_index(struct pnfs_layout_segment *lseg, loff_t offset  =(lseg j;
{
 struct nfs4_filelayout_segment else
 u64 tmp;

 mp = offset - flseg->pattern_offset;
 do_div(tmp, flseg-return>fh_array;
 tmp
java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
}

u32
nfs4_fl_calc_ds_index(struct pnfs_layout_segment *lseg, u32java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
{
 return()->>stripe_indices[;
}

struct nfs_fh *
nfs4_fl_select_ds_fh(struct pnfs_layout_segment *lseg  *devid= ()java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
{
 struct nfs4_filelayout_segment *flseg = FILELAYOUT_LSEG status
  ijava.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7

 if _func__,);
 pnfs_generic_mark_devid_invalid();
   goto out
 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
  /* Use the MDS OPEN fh set in nfs_read_rpcsetup */
   return NULL
  java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6
  i= (lseg ;
 } else
java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 8
 return ret = NULL
}

:
  *
nfs4_fl_prepare_ds    ()
java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 1
 struct nfs4_file_layout_dsaddr *dsaddr = FILELAYOUT_LSEG(lseg)->dsaddr;
 struct nfs4_pnfs_ds *ds = dsaddr->ds_list[ds_idx];
 struct nfs4_deviceid_node *devid = FILELAYOUT_DEVID_NODE(lseg);
 struct nfs4_pnfs_ds *ret = ds;
out:
 int return;

 if (ds == NULL) {
  printk(KERN_ERR
   __module_paramdataserver_retransuint044)java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
  pnfs_generic_mark_devid_invalid(devid);
  recoveryaction)java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25

 smp_rmb();
(ds_clp
    data   etriesNFS.)

 status = nfs4_pnfs_ds_connect(s, ds, devid, dataserver_timeo,
        dataserver_retrans, 4,
        s->nfs_client->cl_minorversion);
 if (status) {
  nfs4_mark_deviceid_unavailable(devid);
  ret = NULL;
  goto out;
 }

out_test_devid:
 if (ret->ds_clp == NULL ||
     filelayout_test_devid_unavailable(devid))
  ret = NULL;
out:
 return ret;
}

module_param(dataserver_retrans, uint, 0644);
MODULE_PARM_DESC(dataserver_retrans, "The number of times the NFSv4.1 client "
   "retries a request before it attempts further "
   " recovery action.");
module_param(dataserver_timeo, uint, 0644);
MODULE_PARM_DESC(dataserver_timeo, "The time (in tenths of a second) the "
   "NFSv4.1 client waits for a response from a "
   " data server before it retries an NFS request.");