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Add support for compressed kernel modules

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- Add support for compressed kernel modules to find-provides.ksyms,
  find-requires.ksyms, firmware.prov (#1622019)

* find-provides.ksyms: Try to process files whose names end with
something else than "*.ko" by guessing a decompressor and uncompressing
it in a temporary file and parsing it instead.
* find-requires.ksyms (all_provides): Likewise.
Add "(\.gz|\.bz2|\.xz)?" to the end of the module path matching regular
expression.
* firmware.prov: Add "(\.gz|\.bz2|\.xz)?" to the end of the module path
matching regular expression.

Resolves: #1942537
Signed-off-by: Eugene Syromiatnikov <esyr@redhat.com>
This commit is contained in:
Eugene Syromiatnikov 2018-08-24 08:45:49 +02:00
parent ddcb08281b
commit f6c02f2f49
3 changed files with 69 additions and 20 deletions
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26
find-provides.ksyms
View File

@ -2,7 +2,29 @@
IFS=$'\n'
for module in $(grep -E '/lib/modules/.+\.ko$'); do
for module in $(grep -E '/lib/modules/.+\.ko(\.gz|\.bz2|\.xz)?$'); do
tmpfile=""
if [ "x${module%.ko}" = "x${module}" ]; then
tmpfile=$(mktemp -t ${0##*/}.XXXXXX.ko)
proc_bin=
case "${module##*.}" in
xz)
proc_bin=xz
;;
bz2)
proc_bin=bzip2
;;
gz)
proc_bin=gzip
;;
esac
[ -n "$proc_bin" ] || continue
"$proc_bin" -d -c - < "$module" > "$tmpfile" || continue
module="$tmpfile"
fi
if [[ -n $(nm $module | sed -r -ne 's:^0*([0-9a-f]+) A __crc_(.+):0x\1 \2:p') ]]; then
nm $module \
| sed -r -ne 's:^0*([0-9a-f]+) A __crc_(.+):0x\1 \2:p' \
@ -21,4 +43,6 @@ for module in $(grep -E '/lib/modules/.+\.ko$'); do
| awk --non-decimal-data '{printf("ksym(%s) = 0x%08s\n", $2, substr($3,($1*2)+1,8))}' \
| LC_ALL=C sort -u
fi
[ -z "$tmpfile" ] || rm -f -- "$tmpfile"
done

61
find-requires.ksyms
View File

@ -9,24 +9,49 @@ IFS=$'\n'
# Extract all of the symbols provided by this module.
all_provides() {
if [[ -n $(nm "$@" | sed -r -ne 's:^0*([0-9a-f]+) A __crc_(.+):0x\1 \2:p') ]]; then
nm "$@" \
| sed -r -ne 's:^0*([0-9a-f]+) A __crc_(.+):0x\1 \2:p' \
| awk --non-decimal-data '{printf("%s:0x%08x\n", $2, $1)}' \
| LC_ALL=C sort -k1,1 -u
else
ELFRODATA=$(readelf -R .rodata "$@" | awk '/0x/{printf $2$3$4$5}')
if [[ -n $(readelf -h "$@" | grep "little endian") ]]; then
RODATA=$(echo $ELFRODATA | sed 's/\(..\)\(..\)\(..\)\(..\)/\4\3\2\1/g')
else
RODATA=$ELFRODATA
for module in "$@"; do
tmpfile=""
if [ "x${module%.ko}" = "x${module}" ]; then
tmpfile=$(mktemp -t ${0##*/}.XXXXXX.ko)
proc_bin=
case "${module##*.}" in
xz)
proc_bin=xz
;;
bz2)
proc_bin=bzip2
;;
gz)
proc_bin=gzip
;;
esac
[ -n "$proc_bin" ] || continue
"$proc_bin" -d -c - < "$module" > "$tmpfile" || continue
module="$tmpfile"
fi
for sym in $(nm "$@" | sed -r -ne 's:^0*([0-9a-f]+) R __crc_(.+):0x\1 \2:p'); do
echo $sym $RODATA
done \
| awk --non-decimal-data '{printf("%s:0x%08s\n", $2, substr($3,($1*2)+1,8))}' \
| LC_ALL=C sort -k1,1 -u
fi
if [[ -n $(nm "$module" | sed -r -ne 's:^0*([0-9a-f]+) A __crc_(.+):0x\1 \2:p') ]]; then
nm "$module" \
| sed -r -ne 's:^0*([0-9a-f]+) A __crc_(.+):0x\1 \2:p' \
| awk --non-decimal-data '{printf("%s:0x%08x\n", $2, $1)}'
else
ELFRODATA=$(readelf -R .rodata "$module" | awk '/0x/{printf $2$3$4$5}')
if [[ -n $(readelf -h "$module" | grep "little endian") ]]; then
RODATA=$(echo $ELFRODATA | sed 's/\(..\)\(..\)\(..\)\(..\)/\4\3\2\1/g')
else
RODATA=$ELFRODATA
fi
for sym in $(nm "$module" | sed -r -ne 's:^0*([0-9a-f]+) R __crc_(.+):0x\1 \2:p'); do
echo $sym $RODATA
done \
| awk --non-decimal-data '{printf("%s:0x%08s\n", $2, substr($3,($1*2)+1,8))}'
fi
[ -z "$tmpfile" ] || rm -f -- "$tmpfile"
done \
| LC_ALL=C sort -k1,1 -u
}
# Extract all of the requirements of this module.
@ -98,7 +123,7 @@ check_kabi() {
fi
}
modules=($(grep -E '/lib/modules/.+\.ko$'))
modules=($(grep -E '/lib/modules/.+\.ko(\.gz|\.bz2|\.xz)?$'))
if [ ${#modules[@]} -gt 0 ]; then
kernel=$(/sbin/modinfo -F vermagic "${modules[0]}" | sed -e 's: .*::' -e q)

2
firmware.prov
View File

@ -5,7 +5,7 @@
IFS=$'\n'
for module in $(grep -E '/lib/modules/.+\.ko$') $*;
for module in $(grep -E '/lib/modules/.+\.ko(\.gz|\.bz2|\.xz)?$') $*;
do
for firmware in `/sbin/modinfo -F firmware $module`;
do