Commit | Line | Data |
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cd195bc4 QP |
1 | #!/bin/sh |
2 | # SPDX-License-Identifier: GPL-2.0-only | |
3 | ||
4 | # Create an autoksyms.h header file from the list of all module's needed symbols | |
5 | # as recorded on the second line of *.mod files and the user-provided symbol | |
6 | # whitelist. | |
7 | ||
8 | set -e | |
9 | ||
10 | output_file="$1" | |
11 | ||
12 | # Use "make V=1" to debug this script. | |
13 | case "$KBUILD_VERBOSE" in | |
14 | *1*) | |
15 | set -x | |
16 | ;; | |
17 | esac | |
18 | ||
19 | # We need access to CONFIG_ symbols | |
20 | . include/config/auto.conf | |
21 | ||
22 | ksym_wl=/dev/null | |
23 | if [ -n "$CONFIG_UNUSED_KSYMS_WHITELIST" ]; then | |
24 | # Use 'eval' to expand the whitelist path and check if it is relative | |
25 | eval ksym_wl="$CONFIG_UNUSED_KSYMS_WHITELIST" | |
26 | [ "${ksym_wl}" != "${ksym_wl#/}" ] || ksym_wl="$abs_srctree/$ksym_wl" | |
27 | if [ ! -f "$ksym_wl" ] || [ ! -r "$ksym_wl" ]; then | |
28 | echo "ERROR: '$ksym_wl' whitelist file not found" >&2 | |
29 | exit 1 | |
30 | fi | |
31 | fi | |
32 | ||
33 | # Generate a new ksym list file with symbols needed by the current | |
34 | # set of modules. | |
35 | cat > "$output_file" << EOT | |
36 | /* | |
37 | * Automatically generated file; DO NOT EDIT. | |
38 | */ | |
39 | ||
40 | EOT | |
41 | ||
88694cff QP |
42 | [ -f modules.order ] && modlist=modules.order || modlist=/dev/null |
43 | sed 's/ko$/mod/' $modlist | | |
cd195bc4 QP |
44 | xargs -n1 sed -n -e '2{s/ /\n/g;/^$/!p;}' -- | |
45 | cat - "$ksym_wl" | | |
46 | sort -u | | |
47 | sed -e 's/\(.*\)/#define __KSYM_\1 1/' >> "$output_file" | |
48 | ||
49 | # Special case for modversions (see modpost.c) | |
50 | if [ -n "$CONFIG_MODVERSIONS" ]; then | |
51 | echo "#define __KSYM_module_layout 1" >> "$output_file" | |
52 | fi |