1#!/bin/sh -
2# $NetBSD: makelintstub,v 1.28 2024/01/20 14:52:49 christos Exp $
3#
4# Copyright (c) 1996, 1997 Christopher G. Demetriou
5# All rights reserved.
6#
7# Redistribution and use in source and binary forms, with or without
8# modification, are permitted provided that the following conditions
9# are met:
10# 1. Redistributions of source code must retain the above copyright
11#    notice, this list of conditions and the following disclaimer.
12# 2. Redistributions in binary form must reproduce the above copyright
13#    notice, this list of conditions and the following disclaimer in the
14#    documentation and/or other materials provided with the distribution.
15# 3. All advertising materials mentioning features or use of this software
16#    must display the following acknowledgement:
17#          This product includes software developed for the
18#          NetBSD Project.  See http://www.NetBSD.org/ for
19#          information about NetBSD.
20# 4. The name of the author may not be used to endorse or promote products
21#    derived from this software without specific prior written permission.
22#
23# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33#
34# <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>>
35
36usage()
37{
38
39cat << _EOF 1>&2
40Usage: $PROG [-n|-p] [-o filename] [-s syscall.h] object ...
41          -n                  Create SYSCALL_NOERROR.
42          -p                  Create PSEUDO_NOERROR.
43                              (also removes leading "_" on syscall name).
44          -o filename         Output to filename.
45          -s syscall.h        Header to #include instead of <sys/syscall.h>.
46
47          The CPP environment variable must be set
48          to the path to the C preprocessor.
49_EOF
50          exit 1
51}
52
53header()
54{
55
56          cat <<- __EOF__
57          /*
58           * THIS IS AN AUTOMATICALLY GENERATED FILE.  DO NOT EDIT.
59           * It is generated by $PROG
60           */
61
62          #include <sys/param.h>
63          #include <sys/acl.h>
64          #include <sys/aio.h>
65          #include <sys/time.h>
66          #include <sys/mount.h>
67          #include <sys/stat.h>
68          #include <ufs/ufs/dinode.h>
69          #include <ufs/lfs/lfs.h>
70          #include <sys/resource.h>
71          #include <sys/poll.h>
72          #include <sys/uio.h>
73          #include <sys/ipc.h>
74          #include <sys/idtype.h>
75          #include <sys/lwpctl.h>
76          #include <sys/mqueue.h>
77          #include <sys/msg.h>
78          #include <sys/sem.h>
79          #include <sys/shm.h>
80          #include <sys/spawn.h>
81          #include <sys/sched.h>
82          #include <sys/timex.h>
83          #include <sys/socket.h>
84          #include <sys/event.h>
85          #include <sys/uuid.h>
86          #include <sys/quotactl.h>
87          #include <stdarg.h>
88          #include <unistd.h>
89          #include <stdlib.h>
90          #include <spawn.h>
91          #include <fcntl.h>
92
93          #include "extern.h"
94
95          __EOF__
96}
97
98syscall_stub()
99{
100
101          syscalldump="$1"
102          syscallname="$2"
103          funcname="$3"
104
105          arglist="$(
106          sed -e 'ta
107                    :a
108                    s,^/\* syscall: \"'"$syscallname"'\" ,,
109                  tb
110                    d
111                    :b
112                    s, \*/$,,' $syscalldump
113          )"
114
115          eval set -f -- "$arglist"
116
117          if [ $# -lt 3 ]; then
118                    echo syscall $syscallname not found! 1>&2
119                    exit 1
120          fi
121
122          shift                         # kill "ret:"
123          returntype=$1; shift
124          shift                         # kill "args:"
125
126          cat <<- __EOF__
127          /*ARGSUSED*/
128          $returntype
129          __EOF__
130
131          # do ANSI C function header
132          echo      "#ifdef __STDC__"
133
134          echo "$funcname("
135          first=true; i=1
136          for arg; do
137                    if $first; then
138                              first=false
139                    else
140                              echo ", "
141                    fi
142                    case "$arg" in
143                    "...") echo "...";;
144                    *) echo "$arg arg$i"; i=$(($i + 1));;
145                    esac
146          done
147          if $first; then
148                    echo "void"
149          fi
150          echo      ")"
151
152          # do K&R C function header
153          echo      "#else"
154
155          echo "$funcname("
156          first=true; i=1
157          for arg; do
158                    if $first; then
159                              first=false
160                    else
161                              echo ", "
162                    fi
163                    case "$arg" in
164                    "...") echo "va_alist";;
165                    *) echo "arg$i"; i=$(($i + 1));;
166                    esac
167          done
168          echo      ")"
169          i=1
170          for arg; do
171                    case "$arg" in
172                    "...") echo "       va_dcl";;
173                    *) echo " $arg arg$i;"; i=$(($i + 1));;
174                    esac
175          done
176
177          # do function body
178          echo      "#endif"
179
180          echo      "{"
181          if [ "$returntype" != "void" ]; then
182                    echo "        return (($returntype)0);"
183          fi
184          echo      "}"
185}
186
187trailer()
188{
189
190          cat <<- __EOF__
191          /* END */
192          __EOF__
193}
194
195
196pflag=false
197nflag=false
198oarg=""
199syscallhdr=/usr/include/sys/syscall.h
200syscalldump=/tmp/makelintstub.$$
201PROG="$(basename "$0")"
202
203if [ -z "${CPP}" ]; then
204          usage
205fi
206
207while getopts no:ps: i
208do
209          case "$i" in
210          n)        nflag=true;;
211          o)        oarg=$OPTARG;;
212          p)        pflag=true;;
213          s)        syscallhdr=$OPTARG;;
214          *)        usage;;
215          esac
216done
217
218shift $(expr $OPTIND - 1)
219
220if $pflag && $nflag
221then
222          echo "$PROG: -n flag and -p flag may not be used together" 1>&2
223          usage
224fi
225
226if [ -n "$oarg" ]; then
227          exec > $oarg
228fi
229
230trap "rm -f $syscalldump" 0 1 2 3 15
231
232header
233
234echo "#include \"$syscallhdr\"" | ${CPP} -D_LIBC -C > $syscalldump
235
236for syscall; do
237          fnname=${syscall%.S}
238          if $pflag; then
239                    scname=${fnname#_}
240          else
241                    scname=$fnname
242          fi
243          syscall_stub $syscalldump $scname $fnname
244          echo ""
245done
246
247trailer
248
249exit 0
250