FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/tests/zfs-tests/include/properties.shlib

     #
     # This file and its contents are supplied under the terms of the
     # Common Development and Distribution License ("CDDL"), version 1.0.
     # You may only use this file in accordance with the terms of version
     # 1.0 of the CDDL.
     #
     # A full copy of the text of the CDDL should have accompanied this
     # source.  A copy of the CDDL is also available via the Internet at
     # http://www.illumos.org/license/CDDL.
    #
    
    #
    # Copyright (c) 2012, 2016, Delphix. All rights reserved.
    # Copyright (c) 2022 Hewlett Packard Enterprise Development LP.
    #
    
    . $STF_SUITE/include/libtest.shlib
    
    typeset -a compress_prop_vals=('off' 'lzjb' 'lz4' 'gzip' 'zle' 'zstd')
    typeset -a checksum_prop_vals=('on' 'off' 'fletcher2' 'fletcher4' 'sha256'
        'noparity' 'sha512' 'skein' 'blake3')
    if ! is_freebsd; then
            checksum_prop_vals+=('edonr')
    fi
    typeset -a recsize_prop_vals=('512' '1024' '2048' '4096' '8192' '16384'
        '32768' '65536' '131072' '262144' '524288' '1048576')
    typeset -a canmount_prop_vals=('on' 'off' 'noauto')
    typeset -a copies_prop_vals=('1' '2' '3')
    typeset -a logbias_prop_vals=('latency' 'throughput')
    typeset -a primarycache_prop_vals=('all' 'none' 'metadata')
    typeset -a redundant_metadata_prop_vals=('all' 'most' 'some' 'none')
    typeset -a secondarycache_prop_vals=('all' 'none' 'metadata')
    typeset -a snapdir_prop_vals=('hidden' 'visible')
    typeset -a sync_prop_vals=('standard' 'always' 'disabled')
    
    typeset -a fs_props=('compress' 'checksum' 'recsize'
        'canmount' 'copies' 'logbias' 'primarycache' 'redundant_metadata'
        'secondarycache' 'snapdir' 'sync')
    typeset -a vol_props=('compress' 'checksum' 'copies' 'logbias' 'primarycache'
        'secondarycache' 'redundant_metadata' 'sync')
    
    #
    # Given the 'prop' passed in, return 'num_vals' elements of the corresponding
    # values array to the user, excluding any elements below 'first.' This allows
    # us to exclude 'off' and 'on' which can be either unwanted, or a duplicate of
    # another property respectively.
    #
    function get_rand_prop_vals
    {
            typeset prop=$1
            typeset -i num_vals=$2
            typeset -i first=$3
    
            [[ -z $prop || -z $num_vals || -z $first ]] && \
                log_fail "get_rand_prop_vals: bad arguments"
    
            typeset retstr=""
    
            typeset prop_vals_var=${prop}_prop_vals
            typeset -a prop_vals=($(eval echo \${${prop_vals_var}[@]}))
    
            [[ -z $prop_vals ]] && \
                log_fail "get_rand_prop_vals: bad prop $prop"
    
            typeset -i last=$((${#prop_vals[@]} - 1))
            typeset -i i
            for i in $(range_shuffle $first $last | head -n $num_vals); do
                    retstr="${prop_vals[$i]} $retstr"
            done
            echo $retstr
    }
    
    #
    # Functions to toggle on/off properties
    #
    typeset -a binary_props=('atime' 'devices' 'exec' 'readonly' 'setuid' 'xattr')
    
    if is_freebsd; then
            binary_props+=('jailed')
    else
            binary_props+=('zoned')
    fi
    
    # Newer Linuxes dropped non-blocking mandatory locks
    if ! is_linux || [ $(linux_version) -lt $(linux_version "4.4") ]; then
            binary_props+=('nbmand')
    fi
    
    function toggle_prop
    {
            typeset ds=$1
            typeset prop=$2
    
            typeset val=$(get_prop $prop $ds)
            typeset newval='off'
    
            [[ $val = $newval ]] && newval='on'
            log_must zfs set $prop=$newval $ds
    }
   
   function toggle_binary_props
   {
           typeset ds=$1
           typeset prop
   
           for prop in "${binary_props[@]}"; do
                   toggle_prop $ds $prop
           done
   }
   
   function randomize_ds_props
   {
           typeset ds=$1
           typeset prop proplist val
   
           if ds_is_volume $ds; then
                   toggle_prop $ds readonly
                   proplist="${vol_props[@]}"
           elif ds_is_filesystem $ds; then
                   toggle_binary_props $ds
                   proplist="${fs_props[@]}"
           else
                   log_fail "$ds is neither a volume nor a file system"
           fi
   
           for prop in $proplist; do
                   typeset val=$(get_rand_prop_vals $prop 1 0)
                   log_must zfs set $prop=$val $ds
           done
   }

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