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#! /bin/sh
# Copyright (c) 2001 Wichert Akkerman <wichert@cistron.nl>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# Validate arg count.
case $# in
1)
dir="$1"
asm=asm
;;
2)
dir="$1"
asm="$2"
;;
*)
echo "usage: $0 include-directory [asm-subdirectory]" >&2
exit 1
;;
esac
lookup_ioctls()
{
type="$1"
shift
# Build the list of all ioctls
regexp='^[[:space:]]*#[[:space:]]*define[[:space:]]\+[A-Z][A-Z0-9_]*[[:space:]]\+0x'"$type"'..\>'
(cd "$dir" && for f; do grep "$regexp" "$f" "uapi/$f" 2>/dev/null; done) |
sed -ne "s,$asm/,asm/,g"'
s/^\(.*\):[[:space:]]*#[[:space:]]*define[[:space:]]*\([A-Z0-9_]*\)[[:space:]]*\(0x'"$type"'..\).*/ { "\1", "\2", \3 },/p' \
>> ioctls.h
}
> ioctls.h
lookup_ioctls 03 linux/hdreg.h
lookup_ioctls 22 scsi/sg.h
lookup_ioctls 46 linux/fb.h
lookup_ioctls 4B linux/kd.h
lookup_ioctls 4C linux/loop.h
lookup_ioctls 53 linux/cdrom.h scsi/scsi.h scsi/scsi_ioctl.h
lookup_ioctls 54 $asm/ioctls.h asm-generic/ioctls.h
lookup_ioctls 56 linux/vt.h
lookup_ioctls '7[12]' linux/videotext.h
lookup_ioctls 89 $asm/sockios.h asm-generic/sockios.h linux/sockios.h
lookup_ioctls 8B linux/wireless.h
if [ -e $dir/Kbuild ]; then
# kernel has exported user space headers, so query only them
files=$(
cd $dir || exit
find . -mindepth 2 -name Kbuild | \
sed -e 's:^\./::' -e 's:/Kbuild:/*:' | \
grep -v '^asm-'
echo "$asm/* asm-generic/*"
)
# special case: some headers aren't exported directly
files="${files} media/* net/bluetooth/* pcmcia/*"
else
# older kernel so just assume some headers
files="linux/* $asm/* asm-generic/* scsi/* sound/*"
fi
# Build the list of all ioctls
# Example output:
# { "asm/ioctls.h", "TIOCSWINSZ", 0x5414 },
# { "asm/mce.h", "MCE_GETCLEAR_FLAGS", _IOC(_IOC_NONE,'M',3,0) },
regexp='^[[:space:]]*#[[:space:]]*define[[:space:]]\+[A-Z][A-Z0-9_]*[[:space:]]\+_S\?\(IO\|IOW\|IOR\|IOWR\)\>'
(cd $dir && grep $regexp $files 2>/dev/null) | \
sed -n \
-e "s,$asm/,asm/,g" \
-e 's/^\(.*\):[[:space:]]*#[[:space:]]*define[[:space:]]*\([A-Z0-9_]*\)[[:space:]]*_S\?I.*(\([^[,]*\)[[:space:]]*,[[:space:]]*\([^,)]*\).*/ { "\1", "\2", _IOC(_IOC_NONE,\3,\4,0) },/p' \
>> ioctls.h
# Strip uapi/ prefix
sed -i 's|"uapi/|"|' ioctls.h
# Sort and drop dups
sort -u -o ioctls.h ioctls.h
> ioctldefs.h
# Collect potential ioctl names. ('bases' is a bad name. Sigh)
# Some use a special base to offset their ioctls on. Extract that as well.
# Some use 2 defines: _IOC(_IOC_NONE,DM_IOCTL,DM_LIST_DEVICES_CMD,....)
bases=$(sed -n \
-e 's/.*_IOC_NONE.*,[[:space:]]*\([A-Z][A-Z0-9_]\+\)[[:space:]]*,[[:space:]]*\([A-Z][A-Z0-9_]\+\)[[:space:]+,].*/\1\n\2/p' \
-e 's/.*_IOC_NONE.*,[[:space:]]*\([A-Z][A-Z0-9_]\+\)[[:space:]+,].*/\1/p' \
ioctls.h | sort -u)
for base in $bases; do
echo "Looking for $base"
regexp="^[[:space:]]*#[[:space:]]*define[[:space:]]\+$base"
line=$( (cd $dir && grep -h $regexp 2>/dev/null $files) | grep -v '\<_IO')
if [ x"$line" != x ]; then
echo "$base is a #define" # "($line)"
echo "$line" >> ioctldefs.h
fi
if ! grep "\<$base\>" ioctldefs.h >/dev/null 2>/dev/null; then
# Not all ioctl's are defines ... some (like the DM_* stuff)
# are enums, so we have to extract that crap ourself
(
cd $dir || exit
# -P: inhibit generation of linemarkers
${CPP:-cpp} -P $(grep -l $base $files 2>/dev/null) | sed '/^$/d' | \
awk -v base="$base" '{
if ($1 == "enum") {
val = 0
while ($NF != "};") {
if (!getline)
exit
gsub(/,/, "")
if ($0 ~ /=/)
val = $NF
if ($1 == base) {
print "#define " base " (" val ")"
exit
}
val++
}
}
}'
) >> ioctldefs.h
if ! grep "\<$base\>" ioctldefs.h >/dev/null 2>/dev/null; then
echo "Can't find the definition for $base"
else
echo "$base is an enum"
fi
fi
done
# Sort and drop dups?
# sort -u <ioctldefs.h >ioctldefs1.h && mv ioctldefs1.h ioctldefs.h
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