vnode_if.sh revision 1.34
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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS \`\`AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 " 32 SCRIPT_ID='$NetBSD: vnode_if.sh,v 1.34 2004/01/25 18:02:04 hannken Exp $' 33 34 # Script to produce VFS front-end sugar. 35 # 36 # usage: vnode_if.sh srcfile 37 # (where srcfile is currently /sys/kern/vnode_if.src) 38 # 39 40 if [ $# -ne 1 ] ; then 41 echo 'usage: vnode_if.sh srcfile' 42 exit 1 43 fi 44 45 # Name and revision of the source file. 46 src=$1 47 SRC_ID=`head -1 $src | sed -e 's/.*\$\(.*\)\$.*/\1/'` 48 49 # Names of the created files. 50 out_c=vnode_if.c 51 out_h=../sys/vnode_if.h 52 53 # Awk program (must support nawk extensions) 54 # Use "awk" at Berkeley, "nawk" or "gawk" elsewhere. 55 awk=${AWK:-awk} 56 57 # Does this awk have a "toupper" function? (i.e. is it GNU awk) 58 isgawk=`$awk 'BEGIN { print toupper("true"); exit; }' 2>/dev/null` 59 60 # If this awk does not define "toupper" then define our own. 61 if [ "$isgawk" = TRUE ] ; then 62 # GNU awk provides it. 63 toupper= 64 else 65 # Provide our own toupper() 66 toupper=' 67 function toupper(str) { 68 _toupper_cmd = "echo "str" |tr a-z A-Z" 69 _toupper_cmd | getline _toupper_str; 70 close(_toupper_cmd); 71 return _toupper_str; 72 }' 73 fi 74 75 # 76 # This is the common part of all awk programs that read $src 77 # This parses the input for one function into the arrays: 78 # argdir, argtype, argname, willrele 79 # and calls "doit()" to generate output for the function. 80 # 81 # Input to this parser is pre-processed slightly by sed 82 # so this awk parser doesn't have to work so hard. The 83 # changes done by the sed pre-processing step are: 84 # insert a space beween * and pointer name 85 # replace semicolons with spaces 86 # 87 sed_prep='s:\*\([^\*/]\):\* \1:g 88 s/;/ /' 89 awk_parser=' 90 # Comment line 91 /^#/ { next; } 92 # First line of description 93 /^vop_/ { 94 name=$1; 95 argc=0; 96 next; 97 } 98 # Last line of description 99 /^}/ { 100 doit(); 101 next; 102 } 103 # Middle lines of description 104 { 105 argdir[argc] = $1; i=2; 106 if ($2 == "WILLRELE") { 107 willrele[argc] = 1; 108 i++; 109 } else if ($2 == "WILLUNLOCK") { 110 willrele[argc] = 2; 111 i++; 112 } else if ($2 == "WILLPUT") { 113 willrele[argc] = 3; 114 i++; 115 } else 116 willrele[argc] = 0; 117 argtype[argc] = $i; i++; 118 while (i < NF) { 119 argtype[argc] = argtype[argc]" "$i; 120 i++; 121 } 122 argname[argc] = $i; 123 argc++; 124 next; 125 } 126 ' 127 128 # This is put before the copyright on each generated file. 129 warning="\ 130 /* @NetBSD@ */ 131 132 /* 133 * Warning: This file is generated automatically. 134 * (Modifications made here may easily be lost!) 135 * 136 * Created from the file: 137 * ${SRC_ID} 138 * by the script: 139 * ${SCRIPT_ID} 140 */ 141 " 142 143 # This is to satisfy McKusick (get rid of evil spaces 8^) 144 anal_retentive='s:\([^/]\*\) :\1:g' 145 146 # 147 # Redirect stdout to the H file. 148 # 149 echo "$0: Creating $out_h" 1>&2 150 exec > $out_h 151 152 # Begin stuff 153 echo -n "$warning" | sed -e 's/\$//g;s/@/\$/g' 154 echo "" 155 echo -n "$copyright" 156 echo '' 157 echo '#ifndef _SYS_VNODE_IF_H_' 158 echo '#define _SYS_VNODE_IF_H_' 159 echo '' 160 echo '#ifdef _KERNEL' 161 echo '#if defined(_LKM) || defined(LKM)' 162 echo '/* LKMs always use non-inlined vnode ops. */' 163 echo '#define VNODE_OP_NOINLINE' 164 echo '#else' 165 echo '#include "opt_vnode_op_noinline.h"' 166 echo '#endif' 167 echo '#endif /* _KERNEL */' 168 echo ' 169 extern const struct vnodeop_desc vop_default_desc; 170 ' 171 172 # Body stuff 173 # This awk program needs toupper() so define it if necessary. 174 sed -e "$sed_prep" $src | $awk "$toupper"' 175 function doit() { 176 # Declare arg struct, descriptor. 177 printf("\nstruct %s_args {\n", name); 178 printf("\tconst struct vnodeop_desc * a_desc;\n"); 179 for (i=0; i<argc; i++) { 180 printf("\t%s a_%s;\n", argtype[i], argname[i]); 181 } 182 printf("};\n"); 183 printf("extern const struct vnodeop_desc %s_desc;\n", name); 184 # Prototype it. 185 printf("#ifndef VNODE_OP_NOINLINE\n"); 186 printf("static __inline\n"); 187 printf("#endif\n"); 188 protoarg = sprintf("int %s(", toupper(name)); 189 protolen = length(protoarg); 190 printf("%s", protoarg); 191 for (i=0; i<argc; i++) { 192 protoarg = sprintf("%s", argtype[i]); 193 if (i < (argc-1)) protoarg = (protoarg ", "); 194 arglen = length(protoarg); 195 if ((protolen + arglen) > 77) { 196 protoarg = ("\n " protoarg); 197 arglen += 4; 198 protolen = 0; 199 } 200 printf("%s", protoarg); 201 protolen += arglen; 202 } 203 printf(")\n"); 204 printf("#ifndef VNODE_OP_NOINLINE\n"); 205 printf("__attribute__((__unused__))\n"); 206 printf("#endif\n"); 207 printf(";\n"); 208 # Define inline function. 209 printf("#ifndef VNODE_OP_NOINLINE\n"); 210 printf("static __inline int %s(", toupper(name)); 211 for (i=0; i<argc; i++) { 212 printf("%s", argname[i]); 213 if (i < (argc-1)) printf(", "); 214 } 215 printf(")\n"); 216 for (i=0; i<argc; i++) { 217 printf("\t%s %s;\n", argtype[i], argname[i]); 218 } 219 printf("{\n\tstruct %s_args a;\n", name); 220 printf("\ta.a_desc = VDESC(%s);\n", name); 221 for (i=0; i<argc; i++) { 222 printf("\ta.a_%s = %s;\n", argname[i], argname[i]); 223 } 224 printf("\treturn (VCALL(%s%s, VOFFSET(%s), &a));\n}\n", 225 argname[0], arg0special, name); 226 printf("#endif\n"); 227 vops++; 228 } 229 BEGIN { 230 arg0special=""; 231 vops = 1; # start at 1, to count the 'default' op 232 } 233 END { 234 printf("\n/* Special cases: */\n#include <sys/buf.h>\n"); 235 argc=1; 236 argtype[0]="struct buf *"; 237 argname[0]="bp"; 238 arg0special="->b_vp"; 239 name="vop_bwrite"; 240 doit(); 241 242 printf("\n#define VNODE_OPS_COUNT\t%d\n", vops); 243 } 244 '"$awk_parser" | sed -e "$anal_retentive" 245 246 # End stuff 247 echo ' 248 /* End of special cases. */' 249 echo '' 250 echo '#endif /* !_SYS_VNODE_IF_H_ */' 251 252 # 253 # Redirect stdout to the C file. 254 # 255 echo "$0: Creating $out_c" 1>&2 256 exec > $out_c 257 258 # Begin stuff 259 echo -n "$warning" | sed -e 's/\$//g;s/@/\$/g' 260 echo "" 261 echo -n "$copyright" 262 echo " 263 #include <sys/cdefs.h> 264 __KERNEL_RCSID(0, \"\$NetBSD\$\"); 265 " 266 267 echo ' 268 /* 269 * If we have LKM support, always include the non-inline versions for 270 * LKMs. Otherwise, do it based on the option. 271 */ 272 #ifdef LKM 273 #define VNODE_OP_NOINLINE 274 #else 275 #include "opt_vnode_op_noinline.h" 276 #endif' 277 echo ' 278 #include <sys/param.h> 279 #include <sys/mount.h> 280 #include <sys/buf.h> 281 #include <sys/vnode.h> 282 283 const struct vnodeop_desc vop_default_desc = { 284 0, 285 "default", 286 0, 287 NULL, 288 VDESC_NO_OFFSET, 289 VDESC_NO_OFFSET, 290 VDESC_NO_OFFSET, 291 VDESC_NO_OFFSET, 292 NULL, 293 }; 294 ' 295 296 # Body stuff 297 sed -e "$sed_prep" $src | $awk ' 298 function do_offset(typematch) { 299 for (i=0; i<argc; i++) { 300 if (argtype[i] == typematch) { 301 printf("\tVOPARG_OFFSETOF(struct %s_args, a_%s),\n", 302 name, argname[i]); 303 return i; 304 }; 305 }; 306 print "\tVDESC_NO_OFFSET,"; 307 return -1; 308 } 309 310 function doit() { 311 # Define offsets array 312 printf("\nconst int %s_vp_offsets[] = {\n", name); 313 for (i=0; i<argc; i++) { 314 if (argtype[i] == "struct vnode *") { 315 printf ("\tVOPARG_OFFSETOF(struct %s_args,a_%s),\n", 316 name, argname[i]); 317 } 318 } 319 print "\tVDESC_NO_OFFSET"; 320 print "};"; 321 # Define F_desc 322 printf("const struct vnodeop_desc %s_desc = {\n", name); 323 # offset 324 printf ("\t%d,\n", vop_offset++); 325 # printable name 326 printf ("\t\"%s\",\n", name); 327 # flags 328 printf("\t0"); 329 vpnum = 0; 330 for (i=0; i<argc; i++) { 331 if (willrele[i]) { 332 if (willrele[i] == 2) { 333 word = "UNLOCK"; 334 } else if (willrele[i] == 3) { 335 word = "PUT"; 336 } else { 337 word = "RELE"; 338 } 339 if (argdir[i] ~ /OUT/) { 340 printf(" | VDESC_VPP_WILL%s", word); 341 } else { 342 printf(" | VDESC_VP%s_WILL%s", vpnum, word); 343 }; 344 vpnum++; 345 } 346 } 347 print ","; 348 # vp offsets 349 printf ("\t%s_vp_offsets,\n", name); 350 # vpp (if any) 351 do_offset("struct vnode **"); 352 # cred (if any) 353 do_offset("struct ucred *"); 354 # proc (if any) 355 do_offset("struct proc *"); 356 # componentname 357 do_offset("struct componentname *"); 358 # transport layer information 359 printf ("\tNULL,\n};\n"); 360 361 # Define function. 362 printf("#ifdef VNODE_OP_NOINLINE\n"); 363 printf("int\n%s(", toupper(name)); 364 for (i=0; i<argc; i++) { 365 printf("%s", argname[i]); 366 if (i < (argc-1)) printf(", "); 367 } 368 printf(")\n"); 369 for (i=0; i<argc; i++) { 370 printf("\t%s %s;\n", argtype[i], argname[i]); 371 } 372 printf("{\n\tstruct %s_args a;\n", name); 373 printf("\ta.a_desc = VDESC(%s);\n", name); 374 for (i=0; i<argc; i++) { 375 printf("\ta.a_%s = %s;\n", argname[i], argname[i]); 376 } 377 printf("\treturn (VCALL(%s%s, VOFFSET(%s), &a));\n}\n", 378 argname[0], arg0special, name); 379 printf("#endif\n"); 380 } 381 BEGIN { 382 printf("\n/* Special cases: */\n"); 383 # start from 1 (vop_default is at 0) 384 vop_offset=1; 385 argc=1; 386 argdir[0]="IN"; 387 argtype[0]="struct buf *"; 388 argname[0]="bp"; 389 arg0special="->b_vp"; 390 willrele[0]=0; 391 name="vop_bwrite"; 392 doit(); 393 printf("\n/* End of special cases */\n"); 394 395 arg0special=""; 396 } 397 '"$awk_parser" | sed -e "$anal_retentive" 398 399 # End stuff 400 echo ' 401 /* End of special cases. */' 402 403 # Add the vfs_op_descs array to the C file. 404 # Begin stuff 405 echo ' 406 const struct vnodeop_desc * const vfs_op_descs[] = { 407 &vop_default_desc, /* MUST BE FIRST */ 408 &vop_bwrite_desc, /* XXX: SPECIAL CASE */ 409 ' 410 411 # Body stuff 412 sed -e "$sed_prep" $src | $awk ' 413 function doit() { 414 printf("\t&%s_desc,\n", name); 415 } 416 '"$awk_parser" 417 418 # End stuff 419 echo ' NULL 420 }; 421 ' 422 423 exit 0 424 425 # Local Variables: 426 # tab-width: 4 427 # End: 428
Indexes created Thu Oct 02 14:10:14 GMT 2025