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