#! /bin/bash IFS=$'\n' 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 [[ -n $(nm $module | sed -r -ne 's:^0*([0-9a-f]+) A __crc_(.+):0x\1 \2:p') ]]; then nm $module \ | sed -r -ne 's:^0*([0-9a-f]+) A __crc_(.+):0x\1 \2:p' \ | awk --non-decimal-data '{printf("'"${dep_pfx}"'(%s) = 0x%08x\n", $2, $1)}' \ | LC_ALL=C sort -u else ELFRODATA=$(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 # Commit binutils-2_33~1385[1] has changed (and binutils-2_35~1768[2] # has not reverted it) the calculated type for symbols in read-write # .rodata section from 'R' to 'D', since, apparently, many kernel # modules have it indeed read-write. # # [1] https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=a288c270991d # [2] https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=49d9fd42acef for sym in $(nm $module | sed -r -ne 's:^0*([0-9a-f]+) [DR] __crc_(.+):0x\1 \2:p'); do echo $sym $RODATA done \ | awk --non-decimal-data '{printf("'"${dep_pfx}"'(%s) = 0x%08s\n", $2, substr($3,($1*2)+1,8))}' \ | LC_ALL=C sort -u fi [ -z "$tmpfile" ] || rm -f -- "$tmpfile" done