vnode_if.sh revision 1.32
1 #!/bin/sh - 2 copyright="\ 3 /* 4 * Copyright (c) 1992, 1993, 1994, 1995 5 * The Regents of the University of California. 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 by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS \`\`AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 " 36 SCRIPT_ID='$NetBSD: vnode_if.sh,v 1.32 2003/06/29 22:31:36 fvdl Exp $' 37 38 # Script to produce VFS front-end sugar. 39 # 40 # usage: vnode_if.sh srcfile 41 # (where srcfile is currently /sys/kern/vnode_if.src) 42 # 43 44 if [ $# -ne 1 ] ; then 45 echo 'usage: vnode_if.sh srcfile' 46 exit 1 47 fi 48 49 # Name and revision of the source file. 50 src=$1 51 SRC_ID=`head -1 $src | sed -e 's/.*\$\(.*\)\$.*/\1/'` 52 53 # Names of the created files. 54 out_c=vnode_if.c 55 out_h=../sys/vnode_if.h 56 57 # Awk program (must support nawk extensions) 58 # Use "awk" at Berkeley, "nawk" or "gawk" elsewhere. 59 awk=${AWK:-awk} 60 61 # Does this awk have a "toupper" function? (i.e. is it GNU awk) 62 isgawk=`$awk 'BEGIN { print toupper("true"); exit; }' 2>/dev/null` 63 64 # If this awk does not define "toupper" then define our own. 65 if [ "$isgawk" = TRUE ] ; then 66 # GNU awk provides it. 67 toupper= 68 else 69 # Provide our own toupper() 70 toupper=' 71 function toupper(str) { 72 _toupper_cmd = "echo "str" |tr a-z A-Z" 73 _toupper_cmd | getline _toupper_str; 74 close(_toupper_cmd); 75 return _toupper_str; 76 }' 77 fi 78 79 # 80 # This is the common part of all awk programs that read $src 81 # This parses the input for one function into the arrays: 82 # argdir, argtype, argname, willrele 83 # and calls "doit()" to generate output for the function. 84 # 85 # Input to this parser is pre-processed slightly by sed 86 # so this awk parser doesn't have to work so hard. The 87 # changes done by the sed pre-processing step are: 88 # insert a space beween * and pointer name 89 # replace semicolons with spaces 90 # 91 sed_prep='s:\*\([^\*/]\):\* \1:g 92 s/;/ /' 93 awk_parser=' 94 # Comment line 95 /^#/ { next; } 96 # First line of description 97 /^vop_/ { 98 name=$1; 99 argc=0; 100 next; 101 } 102 # Last line of description 103 /^}/ { 104 doit(); 105 next; 106 } 107 # Middle lines of description 108 { 109 argdir[argc] = $1; i=2; 110 if ($2 == "WILLRELE") { 111 willrele[argc] = 1; 112 i++; 113 } else if ($2 == "WILLUNLOCK") { 114 willrele[argc] = 2; 115 i++; 116 } else if ($2 == "WILLPUT") { 117 willrele[argc] = 3; 118 i++; 119 } else 120 willrele[argc] = 0; 121 argtype[argc] = $i; i++; 122 while (i < NF) { 123 argtype[argc] = argtype[argc]" "$i; 124 i++; 125 } 126 argname[argc] = $i; 127 argc++; 128 next; 129 } 130 ' 131 132 # This is put before the copyright on each generated file. 133 warning="\ 134 /* @NetBSD@ */ 135 136 /* 137 * Warning: This file is generated automatically. 138 * (Modifications made here may easily be lost!) 139 * 140 * Created from the file: 141 * ${SRC_ID} 142 * by the script: 143 * ${SCRIPT_ID} 144 */ 145 " 146 147 # This is to satisfy McKusick (get rid of evil spaces 8^) 148 anal_retentive='s:\([^/]\*\) :\1:g' 149 150 # 151 # Redirect stdout to the H file. 152 # 153 echo "$0: Creating $out_h" 1>&2 154 exec > $out_h 155 156 # Begin stuff 157 echo -n "$warning" | sed -e 's/\$//g;s/@/\$/g' 158 echo "" 159 echo -n "$copyright" 160 echo '' 161 echo '#ifndef _SYS_VNODE_IF_H_' 162 echo '#define _SYS_VNODE_IF_H_' 163 echo '' 164 echo '#ifdef _KERNEL' 165 echo '#if defined(_LKM) || defined(LKM)' 166 echo '/* LKMs always use non-inlined vnode ops. */' 167 echo '#define VNODE_OP_NOINLINE' 168 echo '#else' 169 echo '#include "opt_vnode_op_noinline.h"' 170 echo '#endif' 171 echo '#endif /* _KERNEL */' 172 echo ' 173 extern const struct vnodeop_desc vop_default_desc; 174 ' 175 176 # Body stuff 177 # This awk program needs toupper() so define it if necessary. 178 sed -e "$sed_prep" $src | $awk "$toupper"' 179 function doit() { 180 # Declare arg struct, descriptor. 181 printf("\nstruct %s_args {\n", name); 182 printf("\tconst struct vnodeop_desc * a_desc;\n"); 183 for (i=0; i<argc; i++) { 184 printf("\t%s a_%s;\n", argtype[i], argname[i]); 185 } 186 printf("};\n"); 187 printf("extern const struct vnodeop_desc %s_desc;\n", name); 188 # Prototype it. 189 printf("#ifndef VNODE_OP_NOINLINE\n"); 190 printf("static __inline\n"); 191 printf("#endif\n"); 192 protoarg = sprintf("int %s(", toupper(name)); 193 protolen = length(protoarg); 194 printf("%s", protoarg); 195 for (i=0; i<argc; i++) { 196 protoarg = sprintf("%s", argtype[i]); 197 if (i < (argc-1)) protoarg = (protoarg ", "); 198 arglen = length(protoarg); 199 if ((protolen + arglen) > 77) { 200 protoarg = ("\n " protoarg); 201 arglen += 4; 202 protolen = 0; 203 } 204 printf("%s", protoarg); 205 protolen += arglen; 206 } 207 printf(")\n"); 208 printf("#ifndef VNODE_OP_NOINLINE\n"); 209 printf("__attribute__((__unused__))\n"); 210 printf("#endif\n"); 211 printf(";\n"); 212 # Define inline function. 213 printf("#ifndef VNODE_OP_NOINLINE\n"); 214 printf("static __inline int %s(", toupper(name)); 215 for (i=0; i<argc; i++) { 216 printf("%s", argname[i]); 217 if (i < (argc-1)) printf(", "); 218 } 219 printf(")\n"); 220 for (i=0; i<argc; i++) { 221 printf("\t%s %s;\n", argtype[i], argname[i]); 222 } 223 printf("{\n\tstruct %s_args a;\n", name); 224 printf("\ta.a_desc = VDESC(%s);\n", name); 225 for (i=0; i<argc; i++) { 226 printf("\ta.a_%s = %s;\n", argname[i], argname[i]); 227 } 228 printf("\treturn (VCALL(%s%s, VOFFSET(%s), &a));\n}\n", 229 argname[0], arg0special, name); 230 printf("#endif\n"); 231 vops++; 232 } 233 BEGIN { 234 arg0special=""; 235 vops = 1; # start at 1, to count the 'default' op 236 } 237 END { 238 printf("\n/* Special cases: */\n#include <sys/buf.h>\n"); 239 argc=1; 240 argtype[0]="struct buf *"; 241 argname[0]="bp"; 242 arg0special="->b_vp"; 243 name="vop_strategy"; 244 doit(); 245 name="vop_bwrite"; 246 doit(); 247 248 printf("\n#define VNODE_OPS_COUNT\t%d\n", vops); 249 } 250 '"$awk_parser" | sed -e "$anal_retentive" 251 252 # End stuff 253 echo ' 254 /* End of special cases. */' 255 echo '' 256 echo '#endif /* !_SYS_VNODE_IF_H_ */' 257 258 # 259 # Redirect stdout to the C file. 260 # 261 echo "$0: Creating $out_c" 1>&2 262 exec > $out_c 263 264 # Begin stuff 265 echo -n "$warning" | sed -e 's/\$//g;s/@/\$/g' 266 echo "" 267 echo -n "$copyright" 268 echo " 269 #include <sys/cdefs.h> 270 __KERNEL_RCSID(0, \"\$NetBSD\$\"); 271 " 272 273 echo ' 274 /* 275 * If we have LKM support, always include the non-inline versions for 276 * LKMs. Otherwise, do it based on the option. 277 */ 278 #ifdef LKM 279 #define VNODE_OP_NOINLINE 280 #else 281 #include "opt_vnode_op_noinline.h" 282 #endif' 283 echo ' 284 #include <sys/param.h> 285 #include <sys/mount.h> 286 #include <sys/buf.h> 287 #include <sys/vnode.h> 288 289 const struct vnodeop_desc vop_default_desc = { 290 0, 291 "default", 292 0, 293 NULL, 294 VDESC_NO_OFFSET, 295 VDESC_NO_OFFSET, 296 VDESC_NO_OFFSET, 297 VDESC_NO_OFFSET, 298 NULL, 299 }; 300 ' 301 302 # Body stuff 303 sed -e "$sed_prep" $src | $awk ' 304 function do_offset(typematch) { 305 for (i=0; i<argc; i++) { 306 if (argtype[i] == typematch) { 307 printf("\tVOPARG_OFFSETOF(struct %s_args, a_%s),\n", 308 name, argname[i]); 309 return i; 310 }; 311 }; 312 print "\tVDESC_NO_OFFSET,"; 313 return -1; 314 } 315 316 function doit() { 317 # Define offsets array 318 printf("\nconst int %s_vp_offsets[] = {\n", name); 319 for (i=0; i<argc; i++) { 320 if (argtype[i] == "struct vnode *") { 321 printf ("\tVOPARG_OFFSETOF(struct %s_args,a_%s),\n", 322 name, argname[i]); 323 } 324 } 325 print "\tVDESC_NO_OFFSET"; 326 print "};"; 327 # Define F_desc 328 printf("const struct vnodeop_desc %s_desc = {\n", name); 329 # offset 330 printf ("\t%d,\n", vop_offset++); 331 # printable name 332 printf ("\t\"%s\",\n", name); 333 # flags 334 printf("\t0"); 335 vpnum = 0; 336 for (i=0; i<argc; i++) { 337 if (willrele[i]) { 338 if (willrele[i] == 2) { 339 word = "UNLOCK"; 340 } else if (willrele[i] == 3) { 341 word = "PUT"; 342 } else { 343 word = "RELE"; 344 } 345 if (argdir[i] ~ /OUT/) { 346 printf(" | VDESC_VPP_WILL%s", word); 347 } else { 348 printf(" | VDESC_VP%s_WILL%s", vpnum, word); 349 }; 350 vpnum++; 351 } 352 } 353 print ","; 354 # vp offsets 355 printf ("\t%s_vp_offsets,\n", name); 356 # vpp (if any) 357 do_offset("struct vnode **"); 358 # cred (if any) 359 do_offset("struct ucred *"); 360 # proc (if any) 361 do_offset("struct proc *"); 362 # componentname 363 do_offset("struct componentname *"); 364 # transport layer information 365 printf ("\tNULL,\n};\n"); 366 367 # Define function. 368 printf("#ifdef VNODE_OP_NOINLINE\n"); 369 printf("int\n%s(", toupper(name)); 370 for (i=0; i<argc; i++) { 371 printf("%s", argname[i]); 372 if (i < (argc-1)) printf(", "); 373 } 374 printf(")\n"); 375 for (i=0; i<argc; i++) { 376 printf("\t%s %s;\n", argtype[i], argname[i]); 377 } 378 printf("{\n\tstruct %s_args a;\n", name); 379 printf("\ta.a_desc = VDESC(%s);\n", name); 380 for (i=0; i<argc; i++) { 381 printf("\ta.a_%s = %s;\n", argname[i], argname[i]); 382 } 383 printf("\treturn (VCALL(%s%s, VOFFSET(%s), &a));\n}\n", 384 argname[0], arg0special, name); 385 printf("#endif\n"); 386 } 387 BEGIN { 388 printf("\n/* Special cases: */\n"); 389 # start from 1 (vop_default is at 0) 390 vop_offset=1; 391 argc=1; 392 argdir[0]="IN"; 393 argtype[0]="struct buf *"; 394 argname[0]="bp"; 395 arg0special="->b_vp"; 396 willrele[0]=0; 397 name="vop_strategy"; 398 doit(); 399 name="vop_bwrite"; 400 doit(); 401 printf("\n/* End of special cases */\n"); 402 403 arg0special=""; 404 } 405 '"$awk_parser" | sed -e "$anal_retentive" 406 407 # End stuff 408 echo ' 409 /* End of special cases. */' 410 411 # Add the vfs_op_descs array to the C file. 412 # Begin stuff 413 echo ' 414 const struct vnodeop_desc * const vfs_op_descs[] = { 415 &vop_default_desc, /* MUST BE FIRST */ 416 &vop_strategy_desc, /* XXX: SPECIAL CASE */ 417 &vop_bwrite_desc, /* XXX: SPECIAL CASE */ 418 ' 419 420 # Body stuff 421 sed -e "$sed_prep" $src | $awk ' 422 function doit() { 423 printf("\t&%s_desc,\n", name); 424 } 425 '"$awk_parser" 426 427 # End stuff 428 echo ' NULL 429 }; 430 ' 431 432 exit 0 433 434 # Local Variables: 435 # tab-width: 4 436 # End: 437
Indexes created Thu Oct 02 14:10:14 GMT 2025