e6736871b8
the kernel while the vnode_if.h header is a bunch of inlines to call the code that is in the kernel. Generating the .h file on the fly is kinda bogus because it has to match the one compiled into the kernel. IMHO we should have kern/vnode_if.c and sys/vnode_if.h committed in the tree but that's another battle.
355 lines
9.2 KiB
Perl
355 lines
9.2 KiB
Perl
#!/usr/bin/perl
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eval 'exec /usr/bin/perl -S $0 ${1+"$@"}'
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if $running_under_some_shell;
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#
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# Copyright (c) 1992, 1993
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# The Regents of the University of California. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. All advertising materials mentioning features or use of this software
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# must display the following acknowledgement:
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# This product includes software developed by the University of
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# California, Berkeley and its contributors.
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# 4. Neither the name of the University nor the names of its contributors
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# may be used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# @(#)vnode_if.sh 8.1 (Berkeley) 6/10/93
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# $FreeBSD$
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#
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# Script to produce VFS front-end sugar.
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#
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# usage: vnode_if.sh srcfile
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# (where srcfile is currently /sys/kern/vnode_if.src)
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#
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my %lockdata;
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$cfile = 0;
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$hfile = 0;
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# Process the command line
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#
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while ($arg = shift @ARGV) {
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if ($arg eq '-c') {
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$cfile = 1;
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} elsif ($arg eq '-h') {
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$hfile = 1;
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} elsif ($arg eq '-ch' || $arg eq '-hc') {
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$cfile = 1;
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$hfile = 1;
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} elsif ($arg =~ m/\.src$/) {
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$SRC = $arg;
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} else {
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print "usage: vnode_if.sh [-c] [-h] srcfile\n";
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exit(1);
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}
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}
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if (!$cfile and !$hfile) {
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exit(0); # nothing asked for..
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}
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# Names of the created files.
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$CFILE='vnode_if.c';
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$HEADER='vnode_if.h';
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open(SRC, "<$SRC") || die "Unable to open input file";
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if ($hfile) {
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open(HEADER, ">$HEADER") || die "Unable to create $HEADER";
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# Print out header information for vnode_if.h.
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print HEADER <<END_OF_LEADING_COMMENT
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/*
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* This file is produced automatically.
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* Do not modify anything in here by hand.
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*
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* Created from @(#)vnode_if.sh 8.1 (Berkeley) 6/10/93
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*/
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extern struct vnodeop_desc vop_default_desc;
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END_OF_LEADING_COMMENT
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;
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}
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if ($cfile) {
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open(CFILE, ">$CFILE") || die "Unable to create $CFILE";
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# Print out header information for vnode_if.c.
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print CFILE <<END_OF_LEADING_COMMENT
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/*
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* This file is produced automatically.
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* Do not modify anything in here by hand.
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*
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* Created from @(#)vnode_if.sh 8.1 (Berkeley) 6/10/93
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*/
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#include <sys/param.h>
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#include <sys/vnode.h>
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struct vnodeop_desc vop_default_desc = {
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1, /* special case, vop_default => 1 */
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"default",
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0,
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NULL,
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VDESC_NO_OFFSET,
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VDESC_NO_OFFSET,
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VDESC_NO_OFFSET,
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VDESC_NO_OFFSET,
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NULL,
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};
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END_OF_LEADING_COMMENT
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;
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}
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line: while (<SRC>) {
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chop; # strip record separator
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@Fld = split ' ';
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if (@Fld == 0) {
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next line;
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}
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if (/^#/) {
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if (!/^#%\s+([a-z]+)\s+([a-z]+)\s+(.)\s(.)\s(.)/) {
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next;
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}
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if (!defined($lockdata{"vop_$1"})) {
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$lockdata{"vop_$1"} = {};
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}
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$lockdata{"vop_$1"}->{$2} = {
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'Entry' => $3,
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'OK' => $4,
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'Error' => $5,
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};
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next;
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}
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# Get the function name.
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$name = $Fld[0];
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$uname = uc($name);
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# Get the function arguments.
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for ($numargs = 0; ; ++$numargs) {
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if ($ln = <SRC>) {
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chomp;
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} else {
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die "Unable to read through the arguments for \"$name\"";
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}
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if ($ln =~ /^\};/) {
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last;
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}
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# For the header file
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$a{$numargs} = $ln;
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# The rest of this loop is for the C file
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# Delete comments, if any.
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$ln =~ s/\/\*.*\*\///g;
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# Delete leading/trailing space.
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$ln =~ s/^\s*(.*?)\s*$/$1/;
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# Pick off direction.
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if ($ln =~ s/^INOUT\s+//) {
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$dir = 'INOUT';
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} elsif ($ln =~ s/^IN\s+//) {
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$dir = 'IN';
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} elsif ($ln =~ s/^OUT\s+//) {
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$dir = 'OUT';
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} else {
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die "No IN/OUT direction for \"$ln\".";
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}
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if ($ln =~ s/^WILLRELE\s+//) {
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$rele = 'WILLRELE';
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} else {
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$rele = 'WONTRELE';
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}
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# kill trailing ;
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if ($ln !~ s/;$//) {
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&bail("Missing end-of-line ; in \"$ln\".");
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}
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# pick off variable name
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if ($ln !~ s/([A-Za-z0-9_]+)$//) {
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&bail("Missing var name \"a_foo\" in \"$ln\".");
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}
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$arg = $1;
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# what is left must be type
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# (put clean it up some)
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$type = $ln;
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# condense whitespace
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$type =~ s/\s+/ /g;
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$type =~ s/^\s*(.*?)\s*$/$1/;
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$dirs{$numargs} = $dir;
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$reles{$numargs} = $rele;
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$types{$numargs} = $type;
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$args{$numargs} = $arg;
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}
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if ($hfile) {
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# Print out the vop_F_args structure.
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print HEADER "struct ${name}_args {\n\tstruct vnodeop_desc *a_desc;\n";
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for ($c2 = 0; $c2 < $numargs; ++$c2) {
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$a{$c2} =~ /^\s*(INOUT|OUT|IN)(\s+WILLRELE)?\s+(.*?)\s+(\**)(\S*\;)/;
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print HEADER "\t$3 $4a_$5\n",
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}
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print HEADER "};\n";
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# Print out extern declaration.
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print HEADER "extern struct vnodeop_desc ${name}_desc;\n";
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# Print out prototype.
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print HEADER "static __inline int ${uname} __P((\n";
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for ($c2 = 0; $c2 < $numargs; ++$c2) {
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$a{$c2} =~ /^\s*(INOUT|OUT|IN)(\s+WILLRELE)?\s+(.*?)\s+(\**\S*)\;/;
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print HEADER "\t$3 $4" .
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($c2 < $numargs-1 ? "," : "));") . "\n";
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}
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# Print out function.
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print HEADER "static __inline int ${uname}(";
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for ($c2 = 0; $c2 < $numargs; ++$c2) {
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$a{$c2} =~ /\**([^;\s]*)\;[^\s]*$/;
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print HEADER "$1" . ($c2 < $numargs - 1 ? ', ' : ")\n");
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}
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for ($c2 = 0; $c2 < $numargs; ++$c2) {
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$a{$c2} =~ /^\s*(INOUT|OUT|IN)(\s+WILLRELE)?\s+(.*?)\s+(\**\S*\;)/;
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print HEADER "\t$3 $4\n";
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}
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print HEADER "{\n\tstruct ${name}_args a;\n";
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print HEADER "\tint rc;\n";
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print HEADER "\ta.a_desc = VDESC(${name});\n";
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for ($c2 = 0; $c2 < $numargs; ++$c2) {
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$a{$c2} =~ /(\**)([^;\s]*)([^\s]*)$/;
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print HEADER "\ta.a_$2 = $2$3\n",
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}
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for ($c2 = 0; $c2 < $numargs; ++$c2) {
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if (!exists($args{$c2})) {
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die "Internal error";
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}
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if (exists($lockdata{$name}) &&
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exists($lockdata{$name}->{$args{$c2}})) {
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if ($ENV{'DEBUG_ALL_VFS_LOCKS'} =~ /yes/i) {
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# Add assertions for locking
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if ($lockdata{$name}->{$args{$c2}}->{Entry} eq "L") {
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print HEADER
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"\tASSERT_VOP_LOCKED($args{$c2}, \"$uname\");\n";
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} elsif ($lockdata{$name}->{$args{$c2}}->{Entry} eq "U") {
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print HEADER
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"\tASSERT_VOP_UNLOCKED($args{$c2}, \"$uname\");\n";
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} elsif (0) {
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# XXX More checks!
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}
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}
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}
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}
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$a{0} =~ /\s\**([^;\s]*);/;
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print HEADER "\trc = VCALL($1, VOFFSET(${name}), &a);\n";
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print HEADER "\treturn (rc);\n";
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print HEADER "}\n";
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}
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if ($cfile) {
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# Print out the vop_F_vp_offsets structure. This all depends
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# on naming conventions and nothing else.
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printf CFILE "static int %s_vp_offsets[] = {\n", $name;
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# as a side effect, figure out the releflags
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$releflags = '';
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$vpnum = 0;
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for ($i = 0; $i < $numargs; $i++) {
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if ($types{$i} eq 'struct vnode *') {
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printf CFILE "\tVOPARG_OFFSETOF(struct %s_args,a_%s),\n",
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$name, $args{$i};
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if ($reles{$i} eq 'WILLRELE') {
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$releflags = $releflags . '|VDESC_VP' . $vpnum . '_WILLRELE';
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}
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$vpnum++;
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}
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}
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$releflags =~ s/^\|//;
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print CFILE "\tVDESC_NO_OFFSET\n";
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print CFILE "};\n";
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# Print out the vnodeop_desc structure.
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print CFILE "struct vnodeop_desc ${name}_desc = {\n";
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# offset
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print CFILE "\t0,\n";
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# printable name
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printf CFILE "\t\"%s\",\n", $name;
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# flags
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$vppwillrele = '';
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for ($i = 0; $i < $numargs; $i++) {
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if ($types{$i} eq 'struct vnode **' &&
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($reles{$i} eq 'WILLRELE')) {
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$vppwillrele = '|VDESC_VPP_WILLRELE';
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}
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}
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if ($releflags eq '') {
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printf CFILE "\t0%s,\n", $vppwillrele;
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}
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else {
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printf CFILE "\t%s%s,\n", $releflags, $vppwillrele;
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}
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# vp offsets
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printf CFILE "\t%s_vp_offsets,\n", $name;
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# vpp (if any)
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printf CFILE "\t%s,\n", &find_arg_with_type('struct vnode **');
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# cred (if any)
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printf CFILE "\t%s,\n", &find_arg_with_type('struct ucred *');
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# proc (if any)
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printf CFILE "\t%s,\n", &find_arg_with_type('struct proc *');
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# componentname
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printf CFILE "\t%s,\n", &find_arg_with_type('struct componentname *');
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# transport layer information
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print CFILE "\tNULL,\n};\n\n";
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}
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}
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if ($hfile) {
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close(HEADER) || die "Unable to close $HEADER";
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}
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if ($cfile) {
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close(CFILE) || die "Unable to close $CFILE";
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}
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close(SRC) || die;
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exit 0;
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sub find_arg_with_type {
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my $type = shift;
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my $i;
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for ($i=0; $i < $numargs; $i++) {
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if ($types{$i} eq $type) {
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return "VOPARG_OFFSETOF(struct ${name}_args,a_" . $args{$i} . ")";
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}
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}
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return "VDESC_NO_OFFSET";
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}
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