a7dbb464f4
With commit 'e83321764 ANDROID: KMI symbol lists: migrate section name' section name is updated for allowed list. Update the usage to symbol_list in script as well. Change-Id: Ie6aa6706405a8b0a79359d4314679c48e42160db Signed-off-by: Jeevan Shriram <jshriram@codeaurora.org>
83 lines
2.1 KiB
Bash
Executable File
83 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0-only
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# Create an autoksyms.h header file from the list of all module's needed symbols
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# as recorded on the second line of *.mod files and the user-provided symbol
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# whitelist.
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set -e
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output_file="$1"
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# Use "make V=1" to debug this script.
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case "$KBUILD_VERBOSE" in
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*1*)
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set -x
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;;
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esac
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# We need access to CONFIG_ symbols
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. include/config/auto.conf
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ksym_wl=/dev/null
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if [ -n "$CONFIG_UNUSED_KSYMS_WHITELIST" ]; then
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for UNUSED_KSYMS_WHITELIST_FILE in $CONFIG_UNUSED_KSYMS_WHITELIST; do
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# Use 'eval' to expand the whitelist path and
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# check if it is relative
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eval ksym_wl="$UNUSED_KSYMS_WHITELIST_FILE"
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[ "${ksym_wl}" != "${ksym_wl#/}" ] ||
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ksym_wl="$abs_srctree/$ksym_wl"
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if [ ! -f "$ksym_wl" ] || [ ! -r "$ksym_wl" ]; then
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echo "ERROR: '$ksym_wl' whitelist file not found" >&2
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exit 1
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fi
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ksym_wls="$ksym_wls $ksym_wl"
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done
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fi
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# Generate a new ksym list file with symbols needed by the current
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# set of modules.
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cat > "$output_file" << EOT
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/*
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* Automatically generated file; DO NOT EDIT.
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*/
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EOT
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[ -f modules.order ] && modlist=modules.order || modlist=/dev/null
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sed 's/ko$/mod/' $modlist |
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xargs -n1 sed -n -e '2{s/ /\n/g;/^$/!p;}' -- |
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cat - $ksym_wls |
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sed 's/^#.*//;s/^ *//;/[[abi_symbol_list]]/g' |
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sort -u |
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sed -e 's/\(.*\)/#define __KSYM_\1 1/' >> "$output_file"
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# Special case for modversions (see modpost.c)
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if [ -n "$CONFIG_MODVERSIONS" ]; then
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echo "#define __KSYM_module_layout 1" >> "$output_file"
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fi
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if [ -n "$CONFIG_UNUSED_KSYMS_WHITELIST_ONLY" ] && [ -f "vmlinux" ] ; then
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syms_from_whitelist="$(mktemp)"
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syms_from_vmlinux="$(mktemp)"
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cat $ksym_wls |
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sed 's/^#.*//;s/^ *//;/[[abi_symbol_list]]/g' |
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sort -u > "$syms_from_whitelist"
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$NM --defined-only vmlinux |
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grep "__ksymtab_" |
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sed 's/^.*__ksymtab_//' |
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sort -u > "$syms_from_vmlinux"
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# Forcefully unexport the symbols that are not declared in the whitelist
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syms_to_unexport=$(comm -13 "$syms_from_whitelist" "$syms_from_vmlinux")
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for sym_to_unexport in $syms_to_unexport; do
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sed -i "/^#define __KSYM_${sym_to_unexport} 1/d" \
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"$output_file"
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done
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rm -f "$syms_from_whitelist" "$syms_from_vmlinux"
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fi
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