1#!/bin/sh - 2copyright=' 3/* 4 * Copyright (c) 2000-2007 Apple Inc. All rights reserved. 5 * 6 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 7 * 8 * The contents of this file constitute Original Code as defined in and 9 * are subject to the Apple Public Source License Version 1.1 (the 10 * "License"). You may not use this file except in compliance with the 11 * License. Please obtain a copy of the License at 12 * http://www.apple.com/publicsource and read it before using this file. 13 * 14 * This Original Code and all software distributed under the License are 15 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER 16 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 17 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the 19 * License for the specific language governing rights and limitations 20 * under the License. 21 * 22 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 23 */ 24/* 25 * Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved 26 * Copyright (c) 1992, 1993, 1994, 1995 27 * The Regents of the University of California. All rights reserved. 28 * 29 * Redistribution and use in source and binary forms, with or without 30 * modification, are permitted provided that the following conditions 31 * are met: 32 * 1. Redistributions of source code must retain the above copyright 33 * notice, this list of conditions and the following disclaimer. 34 * 2. Redistributions in binary form must reproduce the above copyright 35 * notice, this list of conditions and the following disclaimer in the 36 * documentation and/or other materials provided with the distribution. 37 * 3. All advertising materials mentioning features or use of this software 38 * must display the following acknowledgement: 39 * This product includes software developed by the University of 40 * California, Berkeley and its contributors. 41 * 4. Neither the name of the University nor the names of its contributors 42 * may be used to endorse or promote products derived from this software 43 * without specific prior written permission. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 46 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 47 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 48 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 55 * SUCH DAMAGE. 56 */ 57' 58SCRIPT_ID='@(#)vnode_if.sh 8.7 (Berkeley) 5/11/95' 59 60# Script to produce VFS front-end sugar. 61# 62# usage: vnode_if.sh srcfile 63# (where srcfile is currently bsd/vfs/vnode_if.src) 64# 65 66if [ $# -ne 1 ] ; then 67 echo 'usage: vnode_if.sh srcfile' 68 exit 1 69fi 70 71# Name of the source file. 72src=$1 73 74# Names of the created files. 75out_c=vnode_if.c 76out_h=vnode_if.h 77 78# Awk program (must support nawk extensions) 79# Use "awk" at Berkeley, "nawk" or "gawk" elsewhere. 80awk=${AWK:-awk} 81#awk=${AWK:-gawk} 82 83# Does this awk have a "toupper" function? (i.e. is it GNU awk) 84isgawk=`$awk 'BEGIN { print toupper("true"); exit; }' 2>/dev/null` 85 86# If this awk does not define "toupper" then define our own. 87if [ "$isgawk" = TRUE ] ; then 88 # GNU awk provides it. 89 toupper= 90else 91 # Provide our own toupper() 92 toupper=' 93function toupper(str) { 94 _toupper_cmd = "echo "str" |tr a-z A-Z" 95 _toupper_cmd | getline _toupper_str; 96 close(_toupper_cmd); 97 return _toupper_str; 98}' 99fi 100 101# 102# This is the common part of all awk programs that read $src 103# This parses the input for one function into the arrays: 104# argdir, argtype, argname, willrele 105# and calls "doit()" to generate output for the function. 106# 107# Input to this parser is pre-processed slightly by sed 108# so this awk parser doesn't have to work so hard. The 109# changes done by the sed pre-processing step are: 110# insert a space beween * and pointer name 111# replace semicolons with spaces 112# 113sed_prep='s:\*\([^\*/]\):\* \1:g 114s/;/ /' 115awk_parser=' 116# Comment line 117/^#/ { next; } 118# First line of description 119/^vop_/ { 120 name=$1; 121 argc=0; 122 ubc=$3; 123 next; 124} 125# Last line of description 126/^}/ { 127 doit(); 128 next; 129} 130# Middle lines of description 131{ 132 argdir[argc] = $1; i=2; 133 if ($2 == "WILLRELE") { 134 willrele[argc] = 1; 135 i++; 136 } else 137 willrele[argc] = 0; 138 argtype[argc] = $i; i++; 139 while (i < NF) { 140 argtype[argc] = argtype[argc]" "$i; 141 i++; 142 } 143 argname[argc] = $i; 144 argc++; 145 next; 146} 147' 148 149# This is put after the copyright on each generated file. 150warning=" 151/* 152 * Warning: This file is generated automatically. 153 * (Modifications made here may easily be lost!) 154 * 155 * Created by the script: 156 * ${SCRIPT_ID} 157 */ 158" 159 160# Get rid of ugly spaces 161space_elim='s:\([^/]\*\) :\1:g' 162 163# 164# Redirect stdout to the H file. 165# 166echo "$0: Creating $out_h" 1>&2 167exec > $out_h 168 169# Begin stuff 170echo "$copyright" 171echo "$warning" 172echo ' 173#ifndef _SYS_VNODE_IF_H_ 174#define _SYS_VNODE_IF_H_ 175 176#include <sys/appleapiopts.h> 177#include <sys/ubc.h> 178 179#ifdef __APPLE_API_UNSTABLE 180extern struct vnodeop_desc vop_default_desc; 181' 182 183# Body stuff 184# This awk program needs toupper() so define it if necessary. 185sed -e "$sed_prep" $src | $awk "$toupper"' 186function doit() { 187 # Declare arg struct, descriptor. 188 printf("\nstruct %s_args {\n", name); 189 printf("\tstruct vnodeop_desc * a_desc;\n"); 190 for (i=0; i<argc; i++) { 191 printf("\t%s a_%s;\n", argtype[i], argname[i]); 192 } 193 printf("};\n"); 194 printf("extern struct vnodeop_desc %s_desc;\n", name); 195 # Define inline function. 196 printf("#define %s(", toupper(name)); 197 for (i=0; i<argc; i++) { 198 printf("%s", argname[i]); 199 if (i < (argc-1)) printf(", "); 200 } 201 printf(") _%s(", toupper(name)); 202 for (i=0; i<argc; i++) { 203 printf("%s", argname[i]); 204 if (i < (argc-1)) printf(", "); 205 } 206 printf(")\n"); 207 printf("static __inline int _%s(", toupper(name)); 208 for (i=0; i<argc; i++) { 209 # generate ANSI protoypes now, hurrah! 210 printf("%s _%s", argtype[i], argname[i]); 211 if (i < (argc-1)) printf(", "); 212 } 213 printf(")\n"); 214 printf("{\n\tstruct %s_args a;\n", name); 215 printf("\ta.a_desc = VDESC(%s);\n", name); 216 for (i=0; i<argc; i++) { 217 printf("\ta.a_%s = _%s;\n", argname[i], argname[i]); 218 } 219 if (toupper(ubc) == "UBC") { 220 printf("\t{\n\t\t" \ 221 "int _err;\n\t\t" \ 222 "_err = VCALL(_%s%s, VOFFSET(%s), &a);\n\t\t" \ 223 "return (_err);\n\t}\n}\n", 224 argname[0], argname[0], arg0special, name, argname[0]); 225 } else { 226 printf("\treturn (VCALL(_%s%s, VOFFSET(%s), &a));\n}\n", 227 argname[0], arg0special, name); 228 } 229} 230BEGIN { 231 arg0special=""; 232} 233END { 234 printf("\n/* Special cases: */\n#include <sys/buf.h>\n#include <sys/vm.h>\n"); 235 argc=1; 236 argtype[0]="struct buf *"; 237 argname[0]="bp"; 238 arg0special="->b_vp"; 239 name="vop_strategy"; 240 doit(); 241 name="VNOP_BWRITE"; 242 doit(); 243} 244'"$awk_parser" | sed -e "$space_elim" 245 246# End stuff 247echo ' 248/* End of special cases. */ 249 250#endif /* __APPLE_API_UNSTABLE */ 251#endif /* !_SYS_VNODE_IF_H_ */' 252 253# 254# Redirect stdout to the C file. 255# 256echo "$0: Creating $out_c" 1>&2 257exec > $out_c 258 259# Begin stuff 260echo "$copyright" 261echo "$warning" 262echo ' 263#include <sys/param.h> 264#include <sys/mount.h> 265#include <sys/vm.h> 266#include <sys/vnode.h> 267 268struct vnodeop_desc vop_default_desc = { 269 0, 270 "default", 271 0, 272 NULL, 273 VDESC_NO_OFFSET, 274 VDESC_NO_OFFSET, 275 VDESC_NO_OFFSET, 276 VDESC_NO_OFFSET, 277 NULL, 278}; 279' 280 281# Body stuff 282sed -e "$sed_prep" $src | $awk ' 283function do_offset(typematch) { 284 for (i=0; i<argc; i++) { 285 if (argtype[i] == typematch) { 286 printf("\tVOPARG_OFFSETOF(struct %s_args, a_%s),\n", 287 name, argname[i]); 288 return i; 289 }; 290 }; 291 print "\tVDESC_NO_OFFSET,"; 292 return -1; 293} 294 295function doit() { 296 # Define offsets array 297 printf("\nint %s_vp_offsets[] = {\n", name); 298 for (i=0; i<argc; i++) { 299 if (argtype[i] == "struct vnode *") { 300 printf ("\tVOPARG_OFFSETOF(struct %s_args,a_%s),\n", 301 name, argname[i]); 302 } 303 } 304 print "\tVDESC_NO_OFFSET"; 305 print "};"; 306 # Define F_desc 307 printf("struct vnodeop_desc %s_desc = {\n", name); 308 # offset 309 printf ("\t0,\n"); 310 # printable name 311 printf ("\t\"%s\",\n", name); 312 # flags 313 printf("\t0"); 314 vpnum = 0; 315 for (i=0; i<argc; i++) { 316 if (match(argtype[i], "struct vnode *") == 1) { 317 if (willrele[i]) { 318 if (argdir[i] ~ /OUT/) { 319 printf(" | VDESC_VPP_WILLRELE"); 320 } else { 321 printf(" | VDESC_VP%s_WILLRELE", vpnum); 322 }; 323 } 324 vpnum++; 325 } 326 } 327 print ","; 328 # vp offsets 329 printf ("\t%s_vp_offsets,\n", name); 330 # vpp (if any) 331 do_offset("struct vnode **"); 332 # cred (if any) 333 do_offset("kauth_credential_t"); 334 # proc (if any) 335 do_offset("struct proc *"); 336 # componentname 337 do_offset("struct componentname *"); 338 # transport layer information 339 printf ("\tNULL,\n};\n"); 340} 341END { 342 printf("\n/* Special cases: */\n"); 343 argc=1; 344 argdir[0]="IN"; 345 argtype[0]="struct buf *"; 346 argname[0]="bp"; 347 willrele[0]=0; 348 name="vop_strategy"; 349 doit(); 350 name="VNOP_BWRITE"; 351 doit(); 352} 353'"$awk_parser" | sed -e "$space_elim" 354 355# End stuff 356echo ' 357/* End of special cases. */' 358 359# Add the vfs_op_descs array to the C file. 360# Begin stuff 361echo ' 362struct vnodeop_desc *vfs_op_descs[] = { 363 &vop_default_desc, /* MUST BE FIRST */ 364 &vop_strategy_desc, /* XXX: SPECIAL CASE */ 365 &VNOP_BWRITE_desc, /* XXX: SPECIAL CASE */ 366' 367 368# Body stuff 369sed -e "$sed_prep" $src | $awk ' 370function doit() { 371 printf("\t&%s_desc,\n", name); 372} 373'"$awk_parser" 374 375# End stuff 376echo ' NULL 377}; 378' 379 380exit 0 381 382# Local Variables: 383# tab-width: 4 384# End: 385