80 lines
2.6 KiB
Bash
Executable File
80 lines
2.6 KiB
Bash
Executable File
#! /bin/bash
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IFS=$'\n'
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export LC_ALL=C
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# Prevent elfutils from trying to download debuginfos
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unset DEBUGINFOD_URLS
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for module in $(grep -E '/lib/modules/.+\.ko(\.gz|\.bz2|\.xz|\.zst)?$') "$@"; do
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dep_pfx="ksym"
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# For built-in kmods, "kernel()" syntax is used instead of "ksym()"
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printf "%s" "$module" | grep -v "^${RPM_BUILD_ROOT}/\?lib/modules/[1-9][^/]*/kernel" > /dev/null \
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|| dep_pfx="kernel"
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tmpfile=""
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if [ "x${module%.ko}" = "x${module}" ]; then
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tmpfile=$(mktemp -t ${0##*/}.XXXXXX.ko)
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proc_bin=
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case "${module##*.}" in
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zst)
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proc_bin=zstd
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;;
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xz)
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proc_bin=xz
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;;
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bz2)
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proc_bin=bzip2
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;;
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gz)
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proc_bin=gzip
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;;
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esac
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[ -n "$proc_bin" ] || continue
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"$proc_bin" -d -c - < "$module" > "$tmpfile" || continue
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module="$tmpfile"
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fi
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if nm "$module" | grep -qE '^([0-9a-f]+) A __crc_(.+)' 2> /dev/null; then
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nm "$module" \
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| awk \
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-v 'dep_pfx='"$dep_pfx" \
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--non-decimal-data \
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'match($0, /^([0-9a-f]+) A __crc_(.+)/, a) { printf("%s(%s) = 0x%08x\n", dep_pfx, a[2], strtonum("0x" a[1])) }'
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else
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objdump -t "$module" \
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| sed -n 's/^[0-9a-f][0-9a-f]* [gl]...... \(.*\) [0-9a-f][0-9a-f]* __crc_.*$/\1/p' \
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| sort -u \
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| while read -r sectname; do
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[ -n "$sectname" ] || continue
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kmod_elf_hdr="$(readelf -h "$module")"
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[ "x$kmod_elf_hdr" = "x${kmod_elf_hdr%Data:*little endian*}" ]
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revbytes="$?"
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objdump -t "$module" \
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| awk \
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-v 'dep_pfx='"$dep_pfx" \
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-v 'module='"$module" \
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-v 'revbytes='"$revbytes" \
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-v 'sectname='"$sectname" \
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--non-decimal-data \
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'BEGIN {
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sectdata = "";
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while (("readelf -R \"" sectname "\" \"" module "\"" | getline t) > 0) {
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if (match(t, /^ 0x[0-9a-f]{8}/))
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sectdata = sectdata substr(t, 14, 8) substr(t, 23, 8) substr(t, 32, 8) substr(t, 41, 8);
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}
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if (revbytes) { sectdata = gensub(/(..)(..)(..)(..)/, "\\4\\3\\2\\1", "g", sectdata); }
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}
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match($0, /^([0-9a-f]+) [gl]...... (.*) [0-9a-f]+ __crc_(.*)$/, a) && a[2] == sectname { printf("%s(%s) = 0x%08s\n", dep_pfx, a[3], substr(sectdata, (strtonum("0x" a[1]) * 2) + 1, 8)) }'
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done
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fi
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[ -z "$tmpfile" ] || rm -f -- "$tmpfile"
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done \
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| sort -k1,1 -u
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