granicus.if.org Git - strace/blob - maint/ioctls_gen.sh

   1 #!/bin/sh
   2 # Copyright (c) 2004-2015 Dmitry V. Levin <ldv@altlinux.org>
   3 # Copyright (c) 2015-2018 The strace developers.
   4 # All rights reserved.
   5 #
   6 # SPDX-License-Identifier: LGPL-2.1-or-later
   7
   8 set -efu
   9
  10 me="${0##*/}"
  11 mydir="${0%/*}"
  12 msg()
  13 {
  14         printf >&2 '%s\n' "$me: $*"
  15 }
  16
  17 case $# in
  18         1)
  19                 inc_dir="$1"
  20                 arch_dir=
  21                 ;;
  22         2)
  23                 inc_dir="$1"
  24                 arch_dir="$2"
  25                 ;;
  26         *)
  27                 echo >&2 "usage: $me include-directory [arch-include-directory]"
  28                 exit 1
  29                 ;;
  30 esac
  31
  32 # Check and canonicalize include-directory and arch-include-directory.
  33 abs_inc_dir="$(cd "$inc_dir" && pwd -P)"
  34 INCLUDES_inc="-I$abs_inc_dir/uapi -I$abs_inc_dir"
  35 abs_arch_dir=
  36 INCLUDES_arch=
  37 [ -z "$arch_dir" ] || {
  38         abs_arch_dir="$(cd "$arch_dir" && pwd -P)"
  39         INCLUDES_arch="-I$abs_arch_dir/uapi -I$abs_arch_dir"
  40 }
  41
  42 cleanup()
  43 {
  44         trap - EXIT
  45         rm -f ioctls_hex.h ioctls_sym.h
  46         exit "$@"
  47 }
  48 trap 'cleanup $?' EXIT
  49 trap 'cleanup 1' HUP PIPE INT QUIT TERM
  50
  51 # Fetch ioctl commands defined in hex form.
  52 {
  53         "$mydir"/ioctls_hex.sh "$inc_dir" 03 linux/hdreg.h
  54         "$mydir"/ioctls_hex.sh "$inc_dir" 22 scsi/sg.h
  55         "$mydir"/ioctls_hex.sh "$inc_dir" 46 linux/fb.h
  56         "$mydir"/ioctls_hex.sh "$inc_dir" 4B linux/kd.h
  57         "$mydir"/ioctls_hex.sh "$inc_dir" 4C linux/loop.h
  58         "$mydir"/ioctls_hex.sh "$inc_dir" 53 linux/cdrom.h scsi/scsi.h scsi/scsi_ioctl.h
  59         "$mydir"/ioctls_hex.sh "$inc_dir" '\(46\|54\|66\|74\)' asm/ioctls.h asm-generic/ioctls.h
  60         "$mydir"/ioctls_hex.sh "$inc_dir" 56 linux/vt.h
  61         "$mydir"/ioctls_hex.sh "$inc_dir" '7[12]' linux/videotext.h
  62         "$mydir"/ioctls_hex.sh "$inc_dir" 89 asm/sockios.h asm-generic/sockios.h linux/sockios.h
  63         "$mydir"/ioctls_hex.sh "$inc_dir" 8B linux/wireless.h
  64 } > ioctls_hex.h
  65 msg "generated $(grep -c '^{' ioctls_hex.h) hex ioctls from $inc_dir"
  66
  67 # Fetch ioctl commands defined in symbolic form.
  68 INCLUDES="$INCLUDES_arch ${INCLUDES-}" \
  69         "$mydir"/ioctls_sym.sh "$inc_dir" > ioctls_sym.h
  70
  71 # Move KVM_* constants from ioctls_inc.h to ioctls_arch.h.
  72 grep -F 'linux/kvm.h' < ioctls_sym.h > ioctls_kvm.h ||:
  73 grep -Fv 'linux/kvm.h' < ioctls_sym.h > ioctls_unkvm.h
  74 mv ioctls_unkvm.h ioctls_sym.h
  75
  76 # Part of android ioctl commands are defined elsewhere.
  77 android_dir="$inc_dir/../drivers/staging/android"
  78 if [ -d "$android_dir/uapi" ]; then
  79         INCLUDES="$INCLUDES_inc $INCLUDES_arch ${INCLUDES-}" \
  80         "$mydir"/ioctls_sym.sh "$android_dir" staging/android >> ioctls_sym.h
  81 fi
  82 msg "generated $(grep -c '^{' ioctls_sym.h) symbolic ioctls from $inc_dir"
  83
  84 # Output all ioctl definitions fetched from include-directory.
  85 echo "/* Generated by $me from definitions found in ${inc_dir%%/}/ tree. */" > ioctls_inc.h
  86 LC_COLLATE=C sort -u ioctls_hex.h ioctls_sym.h >> ioctls_inc.h
  87 msg "generated $(grep -c '^{' ioctls_inc.h) ioctls from $inc_dir"
  88
  89 [ -n "$arch_dir" ] || exit 0
  90
  91 # Fetch ioctl commands defined in hex form.
  92 {
  93         "$mydir"/ioctls_hex.sh "$arch_dir" 54 asm/ioctls.h
  94         "$mydir"/ioctls_hex.sh "$arch_dir" '\(46\|54\|66\|74\)' asm/ioctls.h
  95         "$mydir"/ioctls_hex.sh "$arch_dir" 89 asm/sockios.h
  96 } > ioctls_hex.h
  97 msg "generated $(grep -c '^{' ioctls_hex.h) hex ioctls from $arch_dir"
  98
  99 # Fetch ioctl commands defined in symbolic form.
 100 INCLUDES="$INCLUDES_inc ${INCLUDES-}" \
 101         "$mydir"/ioctls_sym.sh "$arch_dir" > ioctls_sym.h
 102 msg "generated $(grep -c '^{' ioctls_sym.h) symbolic ioctls from $arch_dir"
 103
 104 # Output all ioctl definitions fetched from arch-include-directory.
 105 echo "/* Generated by $me from definitions found in ${arch_dir%%/}/ tree. */" > ioctls_arch.h
 106 LC_COLLATE=C sort -u ioctls_hex.h ioctls_kvm.h ioctls_sym.h >> ioctls_arch.h
 107 msg "generated $(grep -c '^{' ioctls_arch.h) ioctls from $arch_dir"