FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/lib/libzutil/zutil_pool.c

     /*
      * CDDL HEADER START
      *
      * The contents of this file are subject to the terms of the
      * Common Development and Distribution License (the "License").
      * You may not use this file except in compliance with the License.
      *
      * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      * or https://opensource.org/licenses/CDDL-1.0.
     * See the License for the specific language governing permissions
     * and limitations under the License.
     *
     * When distributing Covered Code, include this CDDL HEADER in each
     * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     * If applicable, add the following below this CDDL HEADER, with the
     * fields enclosed by brackets "[]" replaced with your own identifying
     * information: Portions Copyright [yyyy] [name of copyright owner]
     *
     * CDDL HEADER END
     */
    
    /*
     * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
     */
    
    #include <stdio.h>
    #include <stdlib.h>
    #include <string.h>
    #include <sys/nvpair.h>
    #include <sys/fs/zfs.h>
    
    #include <libzutil.h>
    
    static void
    dump_ddt_stat(const ddt_stat_t *dds, int h)
    {
            char refcnt[6];
            char blocks[6], lsize[6], psize[6], dsize[6];
            char ref_blocks[6], ref_lsize[6], ref_psize[6], ref_dsize[6];
    
            if (dds == NULL || dds->dds_blocks == 0)
                    return;
    
            if (h == -1)
                    (void) strcpy(refcnt, "Total");
            else
                    zfs_nicenum(1ULL << h, refcnt, sizeof (refcnt));
    
            zfs_nicenum(dds->dds_blocks, blocks, sizeof (blocks));
            zfs_nicebytes(dds->dds_lsize, lsize, sizeof (lsize));
            zfs_nicebytes(dds->dds_psize, psize, sizeof (psize));
            zfs_nicebytes(dds->dds_dsize, dsize, sizeof (dsize));
            zfs_nicenum(dds->dds_ref_blocks, ref_blocks, sizeof (ref_blocks));
            zfs_nicebytes(dds->dds_ref_lsize, ref_lsize, sizeof (ref_lsize));
            zfs_nicebytes(dds->dds_ref_psize, ref_psize, sizeof (ref_psize));
            zfs_nicebytes(dds->dds_ref_dsize, ref_dsize, sizeof (ref_dsize));
    
            (void) printf("%6s   %6s   %5s   %5s   %5s   %6s   %5s   %5s   %5s\n",
                refcnt,
                blocks, lsize, psize, dsize,
                ref_blocks, ref_lsize, ref_psize, ref_dsize);
    }
    
    /*
     * Print the DDT histogram and the column totals.
     */
    void
    zpool_dump_ddt(const ddt_stat_t *dds_total, const ddt_histogram_t *ddh)
    {
            int h;
    
            (void) printf("\n");
    
            (void) printf("bucket   "
                "           allocated             "
                "          referenced          \n");
            (void) printf("______   "
                "______________________________   "
                "______________________________\n");
    
            (void) printf("%6s   %6s   %5s   %5s   %5s   %6s   %5s   %5s   %5s\n",
                "refcnt",
                "blocks", "LSIZE", "PSIZE", "DSIZE",
                "blocks", "LSIZE", "PSIZE", "DSIZE");
    
            (void) printf("%6s   %6s   %5s   %5s   %5s   %6s   %5s   %5s   %5s\n",
                "------",
                "------", "-----", "-----", "-----",
                "------", "-----", "-----", "-----");
    
            for (h = 0; h < 64; h++)
                    dump_ddt_stat(&ddh->ddh_stat[h], h);
    
            dump_ddt_stat(dds_total, -1);
    
            (void) printf("\n");
    }
    
    /*
    * Process the buffer of nvlists, unpacking and storing each nvlist record
    * into 'records'.  'leftover' is set to the number of bytes that weren't
    * processed as there wasn't a complete record.
    */
   int
   zpool_history_unpack(char *buf, uint64_t bytes_read, uint64_t *leftover,
       nvlist_t ***records, uint_t *numrecords)
   {
           uint64_t reclen;
           nvlist_t *nv;
           int i;
           void *tmp;
   
           while (bytes_read > sizeof (reclen)) {
   
                   /* get length of packed record (stored as little endian) */
                   for (i = 0, reclen = 0; i < sizeof (reclen); i++)
                           reclen += (uint64_t)(((uchar_t *)buf)[i]) << (8*i);
   
                   if (bytes_read < sizeof (reclen) + reclen)
                           break;
   
                   /* unpack record */
                   int err = nvlist_unpack(buf + sizeof (reclen), reclen, &nv, 0);
                   if (err != 0)
                           return (err);
                   bytes_read -= sizeof (reclen) + reclen;
                   buf += sizeof (reclen) + reclen;
   
                   /* add record to nvlist array */
                   (*numrecords)++;
                   if (ISP2(*numrecords + 1)) {
                           tmp = realloc(*records,
                               *numrecords * 2 * sizeof (nvlist_t *));
                           if (tmp == NULL) {
                                   nvlist_free(nv);
                                   (*numrecords)--;
                                   return (ENOMEM);
                           }
                           *records = tmp;
                   }
                   (*records)[*numrecords - 1] = nv;
           }
   
           *leftover = bytes_read;
           return (0);
   }

Cache object: 6c994e3b5d5973ceed255650b202cc62