vnode_if.sh revision 1.27
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 1.27 2001/01/19 12:22:56 martin 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 "$copyright" 160 echo '' 161 echo '#ifndef _SYS_VNODE_IF_H_' 162 echo '#define _SYS_VNODE_IF_H_' 163 echo '' 164 echo '#ifdef _KERNEL' 165 echo '#if defined(_LKM) || defined(LKM)' 166 echo '/* LKMs always use non-inlined vnode ops. */' 167 echo '#define VNODE_OP_NOINLINE' 168 echo '#else' 169 echo '#include "opt_vnode_op_noinline.h"' 170 echo '#endif' 171 echo '#endif /* _KERNEL */' 172 echo ' 173 extern struct vnodeop_desc vop_default_desc; 174 ' 175 176 # Body stuff 177 # This awk program needs toupper() so define it if necessary. 178 sed -e "$sed_prep" $src | $awk "$toupper"' 179 function doit() { 180 # Declare arg struct, descriptor. 181 printf("\nstruct %s_args {\n", name); 182 printf("\tstruct 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 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 } 232 BEGIN { 233 arg0special=""; 234 } 235 END { 236 printf("\n/* Special cases: */\n#include <sys/buf.h>\n"); 237 argc=1; 238 argtype[0]="struct buf *"; 239 argname[0]="bp"; 240 arg0special="->b_vp"; 241 name="vop_strategy"; 242 doit(); 243 name="vop_bwrite"; 244 doit(); 245 } 246 '"$awk_parser" | sed -e "$anal_retentive" 247 248 # End stuff 249 echo ' 250 /* End of special cases. */' 251 echo '' 252 echo '#endif /* !_SYS_VNODE_IF_H_ */' 253 254 # 255 # Redirect stdout to the C file. 256 # 257 echo "$0: Creating $out_c" 1>&2 258 exec > $out_c 259 260 # Begin stuff 261 echo -n "$warning" | sed -e 's/\$//g;s/@/\$/g' 262 echo "" 263 echo -n "$copyright" 264 echo ' 265 /* 266 * If we have LKM support, always include the non-inline versions for 267 * LKMs. Otherwise, do it based on the option. 268 */ 269 #ifdef LKM 270 #define VNODE_OP_NOINLINE 271 #else 272 #include "opt_vnode_op_noinline.h" 273 #endif' 274 echo ' 275 #include <sys/param.h> 276 #include <sys/mount.h> 277 #include <sys/buf.h> 278 #include <sys/vnode.h> 279 280 struct vnodeop_desc vop_default_desc = { 281 0, 282 "default", 283 0, 284 NULL, 285 VDESC_NO_OFFSET, 286 VDESC_NO_OFFSET, 287 VDESC_NO_OFFSET, 288 VDESC_NO_OFFSET, 289 NULL, 290 }; 291 ' 292 293 # Body stuff 294 sed -e "$sed_prep" $src | $awk ' 295 function do_offset(typematch) { 296 for (i=0; i<argc; i++) { 297 if (argtype[i] == typematch) { 298 printf("\tVOPARG_OFFSETOF(struct %s_args, a_%s),\n", 299 name, argname[i]); 300 return i; 301 }; 302 }; 303 print "\tVDESC_NO_OFFSET,"; 304 return -1; 305 } 306 307 function doit() { 308 # Define offsets array 309 printf("\nconst int %s_vp_offsets[] = {\n", name); 310 for (i=0; i<argc; i++) { 311 if (argtype[i] == "struct vnode *") { 312 printf ("\tVOPARG_OFFSETOF(struct %s_args,a_%s),\n", 313 name, argname[i]); 314 } 315 } 316 print "\tVDESC_NO_OFFSET"; 317 print "};"; 318 # Define F_desc 319 printf("struct vnodeop_desc %s_desc = {\n", name); 320 # offset 321 printf ("\t0,\n"); 322 # printable name 323 printf ("\t\"%s\",\n", name); 324 # flags 325 printf("\t0"); 326 vpnum = 0; 327 for (i=0; i<argc; i++) { 328 if (willrele[i]) { 329 if (willrele[i] == 2) { 330 word = "UNLOCK"; 331 } else if (willrele[i] == 3) { 332 word = "PUT"; 333 } else { 334 word = "RELE"; 335 } 336 if (argdir[i] ~ /OUT/) { 337 printf(" | VDESC_VPP_WILL%s", word); 338 } else { 339 printf(" | VDESC_VP%s_WILL%s", vpnum, word); 340 }; 341 vpnum++; 342 } 343 } 344 print ","; 345 # vp offsets 346 printf ("\t%s_vp_offsets,\n", name); 347 # vpp (if any) 348 do_offset("struct vnode **"); 349 # cred (if any) 350 do_offset("struct ucred *"); 351 # proc (if any) 352 do_offset("struct proc *"); 353 # componentname 354 do_offset("struct componentname *"); 355 # transport layer information 356 printf ("\tNULL,\n};\n"); 357 358 # Define function. 359 printf("#ifdef VNODE_OP_NOINLINE\n"); 360 printf("int\n%s(", toupper(name)); 361 for (i=0; i<argc; i++) { 362 printf("%s", argname[i]); 363 if (i < (argc-1)) printf(", "); 364 } 365 printf(")\n"); 366 for (i=0; i<argc; i++) { 367 printf("\t%s %s;\n", argtype[i], argname[i]); 368 } 369 printf("{\n\tstruct %s_args a;\n", name); 370 printf("\ta.a_desc = VDESC(%s);\n", name); 371 for (i=0; i<argc; i++) { 372 printf("\ta.a_%s = %s;\n", argname[i], argname[i]); 373 } 374 printf("\treturn (VCALL(%s%s, VOFFSET(%s), &a));\n}\n", 375 argname[0], arg0special, name); 376 printf("#endif\n"); 377 } 378 BEGIN { 379 arg0special=""; 380 } 381 END { 382 printf("\n/* Special cases: */\n"); 383 argc=1; 384 argdir[0]="IN"; 385 argtype[0]="struct buf *"; 386 argname[0]="bp"; 387 arg0special="->b_vp"; 388 willrele[0]=0; 389 name="vop_strategy"; 390 doit(); 391 name="vop_bwrite"; 392 doit(); 393 } 394 '"$awk_parser" | sed -e "$anal_retentive" 395 396 # End stuff 397 echo ' 398 /* End of special cases. */' 399 400 # Add the vfs_op_descs array to the C file. 401 # Begin stuff 402 echo ' 403 struct vnodeop_desc * const vfs_op_descs[] = { 404 &vop_default_desc, /* MUST BE FIRST */ 405 &vop_strategy_desc, /* XXX: SPECIAL CASE */ 406 &vop_bwrite_desc, /* XXX: SPECIAL CASE */ 407 ' 408 409 # Body stuff 410 sed -e "$sed_prep" $src | $awk ' 411 function doit() { 412 printf("\t&%s_desc,\n", name); 413 } 414 '"$awk_parser" 415 416 # End stuff 417 echo ' NULL 418 }; 419 ' 420 421 exit 0 422 423 # Local Variables: 424 # tab-width: 4 425 # End: 426
Indexes created Thu Oct 02 14:10:14 GMT 2025