1 #!/bin/sh 1 #!/bin/sh
2 # SPDX-License-Identifier: GPL-2.0 <<
3 2
4 if [ $# -ne 2 ] !! 3 if [ $# -lt 2 ]
5 then 4 then
6 echo "Usage: headers_install.sh INFILE !! 5 echo "Usage: headers_install.sh OUTDIR SRCDIR [FILES...]"
7 echo 6 echo
8 echo "Prepares kernel header files for 7 echo "Prepares kernel header files for use by user space, by removing"
9 echo "all compiler.h definitions and # 8 echo "all compiler.h definitions and #includes, removing any"
10 echo "#ifdef __KERNEL__ sections, and 9 echo "#ifdef __KERNEL__ sections, and putting __underscores__ around"
11 echo "asm/inline/volatile keywords." 10 echo "asm/inline/volatile keywords."
12 echo 11 echo
13 echo "INFILE: header file to operate o !! 12 echo "OUTDIR: directory to write each userspace header FILE to."
14 echo "OUTFILE: output file which the p !! 13 echo "SRCDIR: source directory where files are picked."
>> 14 echo "FILES: list of header files to operate on."
15 15
16 exit 1 16 exit 1
17 fi 17 fi
18 18
19 # Grab arguments 19 # Grab arguments
20 INFILE=$1 <<
21 OUTFILE=$2 <<
22 TMPFILE=$OUTFILE.tmp <<
23 <<
24 trap 'rm -f $OUTFILE $TMPFILE' EXIT <<
25 <<
26 # SPDX-License-Identifier with GPL variants mu <<
27 if [ -n "$(sed -n -e "/SPDX-License-Identifier <<
28 echo "error: $INFILE: missing \"WITH L <<
29 exit 1 <<
30 fi <<
31 <<
32 sed -E -e ' <<
33 s/([[:space:](])(__user|__force|__iome <<
34 s/__attribute_const__([[:space:]]|$)/\ <<
35 s@^#include <linux/compiler(|_types).h <<
36 s/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9 <<
37 s/(^|[[:space:](])(inline|asm|volatile <<
38 s@#(ifndef|define|endif[[:space:]]*/[* <<
39 ' $INFILE > $TMPFILE || exit 1 <<
40 <<
41 scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEAD <<
42 [ $? -gt 1 ] && exit 1 <<
43 <<
44 # Remove /* ... */ style comments, and find CO <<
45 configs=$(sed -e ' <<
46 :comment <<
47 s:/\*[^*][^*]*:/*: <<
48 s:/\*\*\**\([^/]\):/*\1: <<
49 t comment <<
50 s:/\*\*/: : <<
51 t comment <<
52 /\/\*/! b check <<
53 N <<
54 b comment <<
55 :print <<
56 P <<
57 D <<
58 :check <<
59 s:^\(CONFIG_[[:alnum:]_]*\):\1\n: <<
60 t print <<
61 s:^[[:alnum:]_][[:alnum:]_]*:: <<
62 s:^[^[:alnum:]_][^[:alnum:]_]*:: <<
63 t check <<
64 d <<
65 ' $OUTFILE) <<
66 <<
67 # The entries in the following list do not res <<
68 # Please do not add a new entry. This list is <<
69 # The list will be reduced gradually, and dele <<
70 # <<
71 # The format is <file-name>:<CONFIG-option> in <<
72 config_leak_ignores=" <<
73 arch/arc/include/uapi/asm/page.h:CONFIG_ARC_PA <<
74 arch/arc/include/uapi/asm/page.h:CONFIG_ARC_PA <<
75 arch/arc/include/uapi/asm/swab.h:CONFIG_ARC_HA <<
76 arch/arm/include/uapi/asm/ptrace.h:CONFIG_CPU_ <<
77 arch/nios2/include/uapi/asm/swab.h:CONFIG_NIOS <<
78 arch/nios2/include/uapi/asm/swab.h:CONFIG_NIOS <<
79 arch/x86/include/uapi/asm/auxvec.h:CONFIG_IA32 <<
80 arch/x86/include/uapi/asm/auxvec.h:CONFIG_X86_ <<
81 " <<
82 20
83 for c in $configs !! 21 OUTDIR="$1"
>> 22 shift
>> 23 SRCDIR="$1"
>> 24 shift
>> 25
>> 26 # Iterate through files listed on command line
>> 27
>> 28 FILE=
>> 29 trap 'rm -f "$OUTDIR/$FILE" "$OUTDIR/$FILE.sed"' EXIT
>> 30 for i in "$@"
84 do 31 do
85 leak_error=1 !! 32 FILE="$(basename "$i")"
86 !! 33 sed -r \
87 for ignore in $config_leak_ignores !! 34 -e 's/([ \t(])(__user|__force|__iomem)[ \t]/\1/g' \
88 do !! 35 -e 's/__attribute_const__([ \t]|$)/\1/g' \
89 if echo "$INFILE:$c" | grep -q !! 36 -e 's@^#include <linux/compiler.h>@@' \
90 leak_error= !! 37 -e 's/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g' \
91 break !! 38 -e 's/(^|[ \t(])(inline|asm|volatile)([ \t(]|$)/\1__\2__\3/g' \
92 fi !! 39 -e 's@#(ifndef|define|endif[ \t]*/[*])[ \t]*_UAPI@#\1 @' \
93 done !! 40 "$SRCDIR/$i" > "$OUTDIR/$FILE.sed" || exit 1
94 !! 41 scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ "$OUTDIR/$FILE.sed" \
95 if [ "$leak_error" = 1 ]; then !! 42 > "$OUTDIR/$FILE"
96 echo "error: $INFILE: leak $c !! 43 [ $? -gt 1 ] && exit 1
97 exit 1 !! 44 rm -f "$OUTDIR/$FILE.sed"
98 fi <<
99 done 45 done
100 <<
101 rm -f $TMPFILE <<
102 trap - EXIT 46 trap - EXIT
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