cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

common.filter (10497B)


      1#!/usr/bin/env bash
      2#
      3# Copyright (C) 2009 Red Hat, Inc.
      4# Copyright (c) 2000-2001 Silicon Graphics, Inc.  All Rights Reserved.
      5#
      6# This program is free software; you can redistribute it and/or
      7# modify it under the terms of the GNU General Public License as
      8# published by the Free Software Foundation.
      9#
     10# This program is distributed in the hope that it would be useful,
     11# but WITHOUT ANY WARRANTY; without even the implied warranty of
     12# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     13# GNU General Public License for more details.
     14#
     15# You should have received a copy of the GNU General Public License
     16# along with this program.  If not, see <http://www.gnu.org/licenses/>.
     17#
     18#
     19# standard filters
     20#
     21
     22_filter_date()
     23{
     24    $SED -re 's/[0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2}/yyyy-mm-dd hh:mm:ss/'
     25}
     26
     27_filter_vmstate_size()
     28{
     29    $SED -r -e 's/[0-9. ]{5} [KMGT]iB/     SIZE/' \
     30            -e 's/[0-9. ]{5} B/   SIZE/'
     31}
     32
     33_filter_generated_node_ids()
     34{
     35    $SED -re 's/\#block[0-9]{3,}/NODE_NAME/'
     36}
     37
     38_filter_qom_path()
     39{
     40    $SED -e '/Attached to:/s/\device[[0-9]\+\]/device[N]/g'
     41}
     42
     43# replace occurrences of the actual TEST_DIR value with TEST_DIR
     44_filter_testdir()
     45{
     46    $SED -e "s#$TEST_DIR/#TEST_DIR/#g" \
     47         -e "s#$SOCK_DIR/#SOCK_DIR/#g" \
     48         -e "s#SOCK_DIR/fuse-#TEST_DIR/#g"
     49}
     50
     51# replace occurrences of the actual IMGFMT value with IMGFMT
     52_filter_imgfmt()
     53{
     54    $SED -e "s#$IMGFMT#IMGFMT#g"
     55}
     56
     57# Replace error message when the format is not supported and delete
     58# the output lines after the first one
     59_filter_qemu_img_check()
     60{
     61    $SED -e '/allocated.*fragmented.*compressed clusters/d' \
     62        -e 's/qemu-img: This image format does not support checks/No errors were found on the image./' \
     63        -e '/Image end offset: [0-9]\+/d'
     64}
     65
     66# Removes \r from messages
     67_filter_win32()
     68{
     69    $SED -e 's/\r//g'
     70}
     71
     72# sanitize qemu-io output
     73_filter_qemu_io()
     74{
     75    _filter_win32 | $SED -e "s/[0-9]* ops\; [0-9/:. sec]* ([0-9/.inf]* [EPTGMKiBbytes]*\/sec and [0-9/.inf]* ops\/sec)/X ops\; XX:XX:XX.X (XXX YYY\/sec and XXX ops\/sec)/" \
     76        -e "s/: line [0-9][0-9]*:  *[0-9][0-9]*\( Aborted\| Killed\)/:\1/" \
     77        -e "s/qemu-io> //g"
     78}
     79
     80# replace occurrences of QEMU_PROG with "qemu"
     81_filter_qemu()
     82{
     83    $SED -e "s#\\(^\\|(qemu) \\)$(basename $QEMU_PROG):#\1QEMU_PROG:#" \
     84        -e 's#^QEMU [0-9]\+\.[0-9]\+\.[0-9]\+ monitor#QEMU X.Y.Z monitor#' \
     85        -e $'s#\r##' # QEMU monitor uses \r\n line endings
     86}
     87
     88# replace problematic QMP output like timestamps
     89_filter_qmp()
     90{
     91    _filter_win32 | \
     92    $SED -e 's#\("\(micro\)\?seconds": \)[0-9]\+#\1 TIMESTAMP#g' \
     93        -e 's#^{"QMP":.*}$#QMP_VERSION#' \
     94        -e '/^    "QMP": {\s*$/, /^    }\s*$/ c\' \
     95        -e '    QMP_VERSION'
     96}
     97
     98# readline makes HMP command strings so long that git complains
     99_filter_hmp()
    100{
    101    $SED -e $'s/^\\((qemu) \\)\\?.*\e\\[D/\\1/g' \
    102        -e $'s/\e\\[K//g'
    103}
    104
    105# replace block job offset
    106_filter_block_job_offset()
    107{
    108    $SED -e 's/, "offset": [0-9]\+,/, "offset": OFFSET,/'
    109}
    110
    111# replace block job len
    112_filter_block_job_len()
    113{
    114    $SED -e 's/, "len": [0-9]\+,/, "len": LEN,/g'
    115}
    116
    117# replace actual image size (depends on the host filesystem)
    118_filter_actual_image_size()
    119{
    120    $SED -s 's/\("actual-size":\s*\)[0-9]\+/\1SIZE/g'
    121}
    122
    123# Filename filters for qemu-img create
    124_filter_img_create_filenames()
    125{
    126    $SED \
    127        -e "s#$REMOTE_TEST_DIR#TEST_DIR#g" \
    128        -e "s#$IMGPROTO:$TEST_DIR#TEST_DIR#g" \
    129        -e "s#$TEST_DIR#TEST_DIR#g" \
    130        -e "s#$SOCK_DIR#SOCK_DIR#g" \
    131        -e 's#SOCK_DIR/fuse-#TEST_DIR/#g' \
    132        -e "s#$IMGFMT#IMGFMT#g" \
    133        -e 's#nbd:127.0.0.1:[0-9]\\+#TEST_DIR/t.IMGFMT#g' \
    134        -e 's#nbd+unix:///\??socket=SOCK_DIR/nbd#TEST_DIR/t.IMGFMT#g'
    135}
    136
    137# replace driver-specific options in the "Formatting..." line
    138_do_filter_img_create()
    139{
    140    # Split the line into the pre-options part ($filename_part, which
    141    # precedes ", fmt=") and the options part ($options, which starts
    142    # with "fmt=")
    143    # (And just echo everything before the first "^Formatting")
    144    readarray formatting_line < <($SED -e 's/, fmt=/\n/')
    145
    146    filename_part=${formatting_line[0]}
    147    unset formatting_line[0]
    148
    149    options="fmt=${formatting_line[@]}"
    150
    151    # Set grep_data_file to '\|data_file' to keep it; make it empty
    152    # to drop it.
    153    # We want to drop it if it is part of the global $IMGOPTS, and we
    154    # want to keep it otherwise (if the test specifically wants to
    155    # test data files).
    156    grep_data_file=(-e data_file)
    157    if _get_data_file "$TEST_IMG" > /dev/null; then
    158        grep_data_file=()
    159    fi
    160
    161    filename_part=$(echo "$filename_part" | _filter_img_create_filenames)
    162
    163    # Break the option line before each option (preserving pre-existing
    164    # line breaks by replacing them by \0 and restoring them at the end),
    165    # then filter out the options we want to keep and sort them according
    166    # to some order that all block drivers used at the time of writing
    167    # this function.
    168    options=$(
    169        echo "$options" \
    170        | tr '\n' '\0' \
    171        | $SED -e 's/ \([a-z0-9_.-]*\)=/\n\1=/g' \
    172        | grep -a -e '^fmt' -e '^size' -e '^backing' -e '^preallocation' \
    173                  -e '^encryption' "${grep_data_file[@]}" \
    174        | _filter_img_create_filenames \
    175        | $SED \
    176            -e 's/^\(fmt\)/0-\1/' \
    177            -e 's/^\(size\)/1-\1/' \
    178            -e 's/^\(backing\)/2-\1/' \
    179            -e 's/^\(data_file\)/3-\1/' \
    180            -e 's/^\(encryption\)/4-\1/' \
    181            -e 's/^\(preallocation\)/8-\1/' \
    182        | LC_ALL=C sort \
    183        | $SED -e 's/^[0-9]-//' \
    184        | tr '\n\0' ' \n' \
    185        | $SED -e 's/^ *$//' -e 's/ *$//'
    186    )
    187
    188    if [ -n "$options" ]; then
    189        echo "$filename_part, $options"
    190    elif [ -n "$filename_part" ]; then
    191        echo "$filename_part"
    192    fi
    193}
    194
    195# Filter qemu-img create output:
    196# Pipe all ^Formatting lines through _do_filter_img_create, and all
    197# other lines through _filter_img_create_filenames
    198_filter_img_create()
    199{
    200    while read -r line; do
    201        if echo "$line" | grep -q '^Formatting'; then
    202            echo "$line" | _do_filter_img_create
    203        else
    204            echo "$line" | _filter_img_create_filenames
    205        fi
    206    done
    207}
    208
    209_filter_img_create_size()
    210{
    211    $SED -e "s# size=[0-9]\\+# size=SIZE#g"
    212}
    213
    214_filter_img_info()
    215{
    216    if [[ "$1" == "--format-specific" ]]; then
    217        local format_specific=1
    218        shift
    219    else
    220        local format_specific=0
    221    fi
    222
    223    discard=0
    224    regex_json_spec_start='^ *"format-specific": \{'
    225    $SED -e "s#$REMOTE_TEST_DIR#TEST_DIR#g" \
    226        -e "s#$IMGPROTO:$TEST_DIR#TEST_DIR#g" \
    227        -e "s#$TEST_DIR#TEST_DIR#g" \
    228        -e "s#$SOCK_DIR#SOCK_DIR#g" \
    229        -e "s#$IMGFMT#IMGFMT#g" \
    230        -e 's#nbd://127.0.0.1:[0-9]\\+$#TEST_DIR/t.IMGFMT#g' \
    231        -e 's#nbd+unix:///\??socket=SOCK_DIR/nbd#TEST_DIR/t.IMGFMT#g' \
    232        -e 's#SOCK_DIR/fuse-#TEST_DIR/#g' \
    233        -e "/encrypted: yes/d" \
    234        -e "/cluster_size: [0-9]\\+/d" \
    235        -e "/table_size: [0-9]\\+/d" \
    236        -e "/compat: '[^']*'/d" \
    237        -e "/compat6: \\(on\\|off\\)/d" \
    238        -e "s/cid: [0-9]\+/cid: XXXXXXXXXX/" \
    239        -e "/static: \\(on\\|off\\)/d" \
    240        -e "/zeroed_grain: \\(on\\|off\\)/d" \
    241        -e "/subformat: '[^']*'/d" \
    242        -e "/adapter_type: '[^']*'/d" \
    243        -e "/hwversion: '[^']*'/d" \
    244        -e "/lazy_refcounts: \\(on\\|off\\)/d" \
    245        -e "/extended_l2=\\(on\\|off\\)/d" \
    246        -e "/block_size: [0-9]\\+/d" \
    247        -e "/block_state_zero: \\(on\\|off\\)/d" \
    248        -e "/log_size: [0-9]\\+/d" \
    249        -e "s/iters: [0-9]\\+/iters: 1024/" \
    250        -e "s/uuid: [-a-f0-9]\\+/uuid: 00000000-0000-0000-0000-000000000000/" | \
    251    while IFS='' read -r line; do
    252        if [[ $format_specific == 1 ]]; then
    253            discard=0
    254        elif [[ $line == "Format specific information:" ]]; then
    255            discard=1
    256        elif [[ $line =~ $regex_json_spec_start ]]; then
    257            discard=2
    258            regex_json_spec_end="^${line%%[^ ]*}\\},? *$"
    259        fi
    260        if [[ $discard == 0 ]]; then
    261            echo "$line"
    262        elif [[ $discard == 1 && ! $line ]]; then
    263            echo
    264            discard=0
    265        elif [[ $discard == 2 && $line =~ $regex_json_spec_end ]]; then
    266            discard=0
    267        fi
    268    done
    269}
    270
    271# filter out offsets and file names from qemu-img map; good for both
    272# human and json output
    273_filter_qemu_img_map()
    274{
    275    # Assuming the data_file value in $IMGOPTS contains a '$TEST_IMG',
    276    # create a filter that replaces the data file name by $TEST_IMG.
    277    # Example:
    278    #   In $IMGOPTS: 'data_file=$TEST_IMG.data_file'
    279    #   Then data_file_pattern == '\(.*\).data_file'
    280    #   And  data_file_filter  == -e 's#\(.*\).data_file#\1#
    281    data_file_filter=()
    282    if data_file_pattern=$(_get_data_file '\\(.*\\)'); then
    283        data_file_filter=(-e "s#$data_file_pattern#\\1#")
    284    fi
    285
    286    $SED -e 's/\([0-9a-fx]* *[0-9a-fx]* *\)[0-9a-fx]* */\1/g' \
    287        -e 's/"offset": [0-9]\+/"offset": OFFSET/g' \
    288        -e 's/Mapped to *//' \
    289        "${data_file_filter[@]}" \
    290        | _filter_testdir | _filter_imgfmt
    291}
    292
    293_filter_nbd()
    294{
    295    # nbd.c error messages contain function names and line numbers that are
    296    # prone to change.  Message ordering depends on timing between send and
    297    # receive callbacks sometimes, making them unreliable.
    298    #
    299    # Filter out the TCP port number since this changes between runs.
    300    $SED -e '/nbd\/.*\.c:/d' \
    301        -e 's#127\.0\.0\.1:[0-9]*#127.0.0.1:PORT#g' \
    302        -e "s#?socket=$SOCK_DIR#?socket=SOCK_DIR#g" \
    303        -e 's#\(foo\|PORT/\?\|.sock\): Failed to .*$#\1#'
    304}
    305
    306_filter_qmp_empty_return()
    307{
    308    grep -v '{"return": {}}'
    309}
    310
    311_filter_json_filename()
    312{
    313    $PYTHON -c 'import sys
    314result, *fnames = sys.stdin.read().split("json:{")
    315depth = 0
    316for fname in fnames:
    317    depth += 1 # For the opening brace in the split separator
    318    for chr_i, chr in enumerate(fname):
    319        if chr == "{":
    320            depth += 1
    321        elif chr == "}":
    322            depth -= 1
    323            if depth == 0:
    324                break
    325
    326    # json:{} filenames may be nested; filter out everything from
    327    # inside the outermost one
    328    if depth == 0:
    329        chr_i += 1 # First character past the filename
    330        result += "json:{ /* filtered */ }" + fname[chr_i:]
    331
    332sys.stdout.write(result)'
    333}
    334
    335_filter_authz_check_tls()
    336{
    337    $SED -e 's/TLS x509 authz check for .* is denied/TLS x509 authz check for DISTINGUISHED-NAME is denied/'
    338}
    339
    340# make sure this script returns success
    341true