mirror of
https://github.com/freebsd/freebsd-src
synced 2024-10-18 22:33:39 +00:00
d1376090b2
in the VOP inlines. This is intended to replace the simple locking
specifications for calls that have more complicated behavior such as rename and
lookup.
The syntax of the new entries is:
#! name pre/post function
If the function is marked 'pre' it is executed prior to calling the VOP and
takes a pointer to a struct vop_{name}_args as it's only parameter.
If the function is marked 'post' it is executed after the VOP call and takes
a pointer to a struct vop_{name}_args as it's first parameter and the integer
return value from the vop as the second paramter.
328 lines
8.4 KiB
Awk
328 lines
8.4 KiB
Awk
#!/usr/bin/awk -f
|
|
|
|
#
|
|
# Copyright (c) 1992, 1993
|
|
# The Regents of the University of California. 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. All advertising materials mentioning features or use of this software
|
|
# must display the following acknowledgement:
|
|
# This product includes software developed by the University of
|
|
# California, Berkeley and its contributors.
|
|
# 4. Neither the name of the University nor the names of its contributors
|
|
# may be used to endorse or promote products derived from this software
|
|
# without specific prior written permission.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
|
|
#
|
|
# @(#)vnode_if.sh 8.1 (Berkeley) 6/10/93
|
|
# $FreeBSD$
|
|
#
|
|
# Script to produce VFS front-end sugar.
|
|
#
|
|
# usage: vnode_if.awk <srcfile> [-c | -h]
|
|
# (where <srcfile> is currently /sys/kern/vnode_if.src)
|
|
#
|
|
|
|
function usage()
|
|
{
|
|
print "usage: vnode_if.awk <srcfile> [-c|-h]";
|
|
exit 1;
|
|
}
|
|
|
|
function die(msg, what)
|
|
{
|
|
printf msg "\n", what > "/dev/stderr";
|
|
exit 1;
|
|
}
|
|
|
|
function t_spc(type)
|
|
{
|
|
# Append a space if the type is not a pointer
|
|
return (type ~ /\*$/) ? type : type " ";
|
|
}
|
|
|
|
# These are just for convenience ...
|
|
function printc(s) {print s > cfile;}
|
|
function printh(s) {print s > hfile;}
|
|
|
|
function add_debug_code(name, arg)
|
|
{
|
|
if (debug_all_vfs_locks && lockdata[name, arg, "Entry"]) {
|
|
# Add assertions for locking
|
|
if (lockdata[name, arg, "Entry"] == "L")
|
|
printh("\tASSERT_VOP_LOCKED("arg", \""uname"\");");
|
|
else if (lockdata[name, arg, "Entry"] == "U")
|
|
printh("\tASSERT_VOP_UNLOCKED("arg", \""uname"\");");
|
|
else if (0) {
|
|
# XXX More checks!
|
|
}
|
|
}
|
|
}
|
|
|
|
function add_debug_pre(name)
|
|
{
|
|
if (debug_all_vfs_locks && lockdata[name, "pre"]) {
|
|
printh("\t"lockdata[name, "pre"]"(&a);");
|
|
}
|
|
}
|
|
|
|
function add_debug_post(name)
|
|
{
|
|
if (debug_all_vfs_locks && lockdata[name, "post"]) {
|
|
printh("\t"lockdata[name, "post"]"(&a, rc);");
|
|
}
|
|
}
|
|
|
|
function find_arg_with_type (type)
|
|
{
|
|
for (jj = 0; jj < numargs; jj++) {
|
|
if (types[jj] == type) {
|
|
return "VOPARG_OFFSETOF(struct " \
|
|
name "_args,a_" args[jj] ")";
|
|
}
|
|
}
|
|
|
|
return "VDESC_NO_OFFSET";
|
|
}
|
|
|
|
BEGIN{
|
|
|
|
# Process the command line
|
|
for (i = 1; i < ARGC; i++) {
|
|
arg = ARGV[i];
|
|
if (arg !~ /^-[ch]+$/ && arg !~ /\.src$/)
|
|
usage();
|
|
if (arg ~ /^-.*c/)
|
|
cfile = "vnode_if.c";
|
|
if (arg ~ /^-.*h/)
|
|
hfile = "vnode_if.h";
|
|
if (arg ~ /\.src$/)
|
|
srcfile = arg;
|
|
}
|
|
ARGC = 1;
|
|
|
|
if (!cfile && !hfile)
|
|
exit 0;
|
|
|
|
if (!srcfile)
|
|
usage();
|
|
|
|
debug_all_vfs_locks = (ENVIRON["DEBUG_ALL_VFS_LOCKS"] ~ /[Yy][Ee][Ss]/);
|
|
|
|
common_head = \
|
|
"/*\n" \
|
|
" * This file is produced automatically.\n" \
|
|
" * Do not modify anything in here by hand.\n" \
|
|
" *\n" \
|
|
" * Created from $FreeBSD$\n" \
|
|
" */\n" \
|
|
"\n";
|
|
|
|
if (hfile)
|
|
printh(common_head "extern struct vnodeop_desc vop_default_desc;");
|
|
|
|
if (cfile) {
|
|
printc(common_head \
|
|
"#include <sys/param.h>\n" \
|
|
"#include <sys/systm.h>\n" \
|
|
"#include <sys/vnode.h>\n" \
|
|
"\n" \
|
|
"struct vnodeop_desc vop_default_desc = {\n" \
|
|
" 1,\t\t\t/* special case, vop_default => 1 */\n" \
|
|
" \"default\",\n" \
|
|
" 0,\n" \
|
|
" NULL,\n" \
|
|
" VDESC_NO_OFFSET,\n" \
|
|
" VDESC_NO_OFFSET,\n" \
|
|
" VDESC_NO_OFFSET,\n" \
|
|
" VDESC_NO_OFFSET,\n" \
|
|
" NULL,\n" \
|
|
"};\n");
|
|
}
|
|
|
|
while ((getline < srcfile) > 0) {
|
|
if (NF == 0)
|
|
continue;
|
|
if ($1 ~ /^#%/) {
|
|
if (NF != 6 || $1 != "#%" || \
|
|
$2 !~ /^[a-z]+$/ || $3 !~ /^[a-z]+$/ || \
|
|
$4 !~ /^.$/ || $5 !~ /^.$/ || $6 !~ /^.$/)
|
|
continue;
|
|
lockdata["vop_" $2, $3, "Entry"] = $4;
|
|
lockdata["vop_" $2, $3, "OK"] = $5;
|
|
lockdata["vop_" $2, $3, "Error"] = $6;
|
|
continue;
|
|
}
|
|
|
|
if ($1 ~ /^#!/) {
|
|
if (NF != 4 || $1 != "#!")
|
|
continue;
|
|
if ($3 != "pre" && $3 != "post")
|
|
continue;
|
|
lockdata["vop_" $2, $3] = $4;
|
|
continue;
|
|
}
|
|
if ($1 ~ /^#/)
|
|
continue;
|
|
|
|
# Get the function name.
|
|
name = $1;
|
|
uname = toupper(name);
|
|
# Get the function arguments.
|
|
for (numargs = 0; ; ++numargs) {
|
|
if ((getline < srcfile) <= 0) {
|
|
die("Unable to read through the arguments for \"%s\"",
|
|
name);
|
|
}
|
|
if ($1 ~ /^\};/)
|
|
break;
|
|
|
|
# Delete comments, if any.
|
|
gsub (/\/\*.*\*\//, "");
|
|
|
|
# Condense whitespace and delete leading/trailing space.
|
|
gsub(/[[:space:]]+/, " ");
|
|
sub(/^ /, "");
|
|
sub(/ $/, "");
|
|
|
|
# Pick off direction.
|
|
if ($1 != "INOUT" && $1 != "IN" && $1 != "OUT")
|
|
die("No IN/OUT direction for \"%s\".", $0);
|
|
dirs[numargs] = $1;
|
|
sub(/^[A-Z]* /, "");
|
|
|
|
if ((reles[numargs] = $1) == "WILLRELE")
|
|
sub(/^[A-Z]* /, "");
|
|
else
|
|
reles[numargs] = "WONTRELE";
|
|
|
|
# kill trailing ;
|
|
if (sub(/;$/, "") < 1)
|
|
die("Missing end-of-line ; in \"%s\".", $0);
|
|
|
|
# pick off variable name
|
|
if ((argp = match($0, /[A-Za-z0-9_]+$/)) < 1)
|
|
die("Missing var name \"a_foo\" in \"%s\".", $0);
|
|
args[numargs] = substr($0, argp);
|
|
$0 = substr($0, 1, argp - 1);
|
|
|
|
# what is left must be type
|
|
# remove trailing space (if any)
|
|
sub(/ $/, "");
|
|
types[numargs] = $0;
|
|
}
|
|
|
|
if (hfile) {
|
|
# Print out the vop_F_args structure.
|
|
printh("struct "name"_args {\n\tstruct vnodeop_desc *a_desc;");
|
|
for (i = 0; i < numargs; ++i)
|
|
printh("\t" t_spc(types[i]) "a_" args[i] ";");
|
|
printh("};");
|
|
|
|
# Print out extern declaration.
|
|
printh("extern struct vnodeop_desc " name "_desc;");
|
|
|
|
# Print out function.
|
|
printh("static __inline int " uname "(");
|
|
for (i = 0; i < numargs; ++i) {
|
|
printh("\t" t_spc(types[i]) args[i] \
|
|
(i < numargs - 1 ? "," : ")"));
|
|
}
|
|
printh("{\n\tstruct " name "_args a;");
|
|
printh("\tint rc;");
|
|
printh("\ta.a_desc = VDESC(" name ");");
|
|
for (i = 0; i < numargs; ++i)
|
|
printh("\ta.a_" args[i] " = " args[i] ";");
|
|
for (i = 0; i < numargs; ++i)
|
|
add_debug_code(name, args[i]);
|
|
add_debug_pre(name);
|
|
printh("\trc = VCALL(" args[0] ", VOFFSET(" name "), &a);");
|
|
add_debug_post(name);
|
|
printh("\treturn (rc);\n}");
|
|
}
|
|
|
|
if (cfile) {
|
|
# Print out the vop_F_vp_offsets structure. This all depends
|
|
# on naming conventions and nothing else.
|
|
printc("static int " name "_vp_offsets[] = {");
|
|
# as a side effect, figure out the releflags
|
|
releflags = "";
|
|
vpnum = 0;
|
|
for (i = 0; i < numargs; i++) {
|
|
if (types[i] == "struct vnode *") {
|
|
printc("\tVOPARG_OFFSETOF(struct " name \
|
|
"_args,a_" args[i] "),");
|
|
if (reles[i] == "WILLRELE") {
|
|
releflags = releflags \
|
|
"|VDESC_VP" vpnum "_WILLRELE";
|
|
}
|
|
vpnum++;
|
|
}
|
|
}
|
|
|
|
sub(/^\|/, "", releflags);
|
|
printc("\tVDESC_NO_OFFSET");
|
|
printc("};");
|
|
|
|
# Print out the vnodeop_desc structure.
|
|
printc("struct vnodeop_desc " name "_desc = {");
|
|
# offset
|
|
printc("\t0,");
|
|
# printable name
|
|
printc("\t\"" name "\",");
|
|
# flags
|
|
vppwillrele = "";
|
|
for (i = 0; i < numargs; i++) {
|
|
if (types[i] == "struct vnode **" && \
|
|
reles[i] == "WILLRELE") {
|
|
vppwillrele = "|VDESC_VPP_WILLRELE";
|
|
}
|
|
}
|
|
|
|
if (!releflags)
|
|
releflags = "0";
|
|
printc("\t" releflags vppwillrele ",");
|
|
|
|
# vp offsets
|
|
printc("\t" name "_vp_offsets,");
|
|
# vpp (if any)
|
|
printc("\t" find_arg_with_type("struct vnode **") ",");
|
|
# cred (if any)
|
|
printc("\t" find_arg_with_type("struct ucred *") ",");
|
|
# thread (if any)
|
|
printc("\t" find_arg_with_type("struct thread *") ",");
|
|
# componentname
|
|
printc("\t" find_arg_with_type("struct componentname *") ",");
|
|
# transport layer information
|
|
printc("\tNULL,\n};\n");
|
|
}
|
|
}
|
|
|
|
if (hfile)
|
|
close(hfile);
|
|
if (cfile)
|
|
close(cfile);
|
|
close(srcfile);
|
|
|
|
exit 0;
|
|
|
|
}
|