vnode_if.sh revision 1.17
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 1.17 1998/07/30 00:46:01 mycroft 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 114 willrele[argc] = 0; 115 argtype[argc] = $i; i++; 116 while (i < NF) { 117 argtype[argc] = argtype[argc]" "$i; 118 i++; 119 } 120 argname[argc] = $i; 121 argc++; 122 next; 123 } 124 ' 125 126 # This is put before the copyright on each generated file. 127 warning="\ 128 /* @NetBSD@ */ 129 130 /* 131 * Warning: This file is generated automatically. 132 * (Modifications made here may easily be lost!) 133 * 134 * Created from the file: 135 * ${SRC_ID} 136 * by the script: 137 * ${SCRIPT_ID} 138 */ 139 " 140 141 # This is to satisfy McKusick (get rid of evil spaces 8^) 142 anal_retentive='s:\([^/]\*\) :\1:g' 143 144 # 145 # Redirect stdout to the H file. 146 # 147 echo "$0: Creating $out_h" 1>&2 148 exec > $out_h 149 150 # Begin stuff 151 echo -n "$warning" | sed -e 's/\$//g;s/@/\$/g' 152 echo "" 153 echo -n "$copyright" 154 echo '' 155 echo '#ifndef _SYS_VNODE_IF_H_' 156 echo '#define _SYS_VNODE_IF_H_' 157 echo ' 158 extern struct vnodeop_desc vop_default_desc; 159 ' 160 161 # Body stuff 162 # This awk program needs toupper() so define it if necessary. 163 sed -e "$sed_prep" $src | $awk "$toupper"' 164 function doit() { 165 # Declare arg struct, descriptor. 166 printf("\nstruct %s_args {\n", name); 167 printf("\tstruct vnodeop_desc * a_desc;\n"); 168 for (i=0; i<argc; i++) { 169 printf("\t%s a_%s;\n", argtype[i], argname[i]); 170 } 171 printf("};\n"); 172 printf("extern struct vnodeop_desc %s_desc;\n", name); 173 # Prototype it. 174 protoarg = sprintf("static __inline int %s __P((", toupper(name)); 175 protolen = length(protoarg); 176 printf("%s", protoarg); 177 for (i=0; i<argc; i++) { 178 protoarg = sprintf("%s", argtype[i]); 179 if (i < (argc-1)) protoarg = (protoarg ", "); 180 arglen = length(protoarg); 181 if (i == (argc-1)) 182 arglen += length(" __attribute__((__unused__))"); 183 if ((protolen + arglen) > 77) { 184 protoarg = ("\n " protoarg); 185 arglen += 4; 186 protolen = 0; 187 } 188 printf("%s", protoarg); 189 protolen += arglen; 190 } 191 printf(")) __attribute__((__unused__));\n"); 192 # Define inline function. 193 printf("static __inline int %s(", toupper(name)); 194 for (i=0; i<argc; i++) { 195 printf("%s", argname[i]); 196 if (i < (argc-1)) printf(", "); 197 } 198 printf(")\n"); 199 for (i=0; i<argc; i++) { 200 printf("\t%s %s;\n", argtype[i], argname[i]); 201 } 202 printf("{\n\tstruct %s_args a;\n", name); 203 printf("\ta.a_desc = VDESC(%s);\n", name); 204 for (i=0; i<argc; i++) { 205 printf("\ta.a_%s = %s;\n", argname[i], argname[i]); 206 } 207 printf("\treturn (VCALL(%s%s, VOFFSET(%s), &a));\n}\n", 208 argname[0], arg0special, name); 209 } 210 BEGIN { 211 arg0special=""; 212 } 213 END { 214 printf("\n/* Special cases: */\n#include <sys/buf.h>\n"); 215 argc=1; 216 argtype[0]="struct buf *"; 217 argname[0]="bp"; 218 arg0special="->b_vp"; 219 name="vop_strategy"; 220 doit(); 221 name="vop_bwrite"; 222 doit(); 223 } 224 '"$awk_parser" | sed -e "$anal_retentive" 225 226 # End stuff 227 echo ' 228 /* End of special cases. */' 229 echo '' 230 echo '#endif /* !_SYS_VNODE_IF_H_ */' 231 232 # 233 # Redirect stdout to the C file. 234 # 235 echo "$0: Creating $out_c" 1>&2 236 exec > $out_c 237 238 # Begin stuff 239 echo -n "$warning" | sed -e 's/\$//g;s/@/\$/g' 240 echo "" 241 echo -n "$copyright" 242 echo ' 243 #include <sys/param.h> 244 #include <sys/mount.h> 245 #include <sys/vnode.h> 246 247 struct vnodeop_desc vop_default_desc = { 248 0, 249 "default", 250 0, 251 NULL, 252 VDESC_NO_OFFSET, 253 VDESC_NO_OFFSET, 254 VDESC_NO_OFFSET, 255 VDESC_NO_OFFSET, 256 NULL, 257 }; 258 ' 259 260 # Body stuff 261 sed -e "$sed_prep" $src | $awk ' 262 function do_offset(typematch) { 263 for (i=0; i<argc; i++) { 264 if (argtype[i] == typematch) { 265 printf("\tVOPARG_OFFSETOF(struct %s_args, a_%s),\n", 266 name, argname[i]); 267 return i; 268 }; 269 }; 270 print "\tVDESC_NO_OFFSET,"; 271 return -1; 272 } 273 274 function doit() { 275 # Define offsets array 276 printf("\nint %s_vp_offsets[] = {\n", name); 277 for (i=0; i<argc; i++) { 278 if (argtype[i] == "struct vnode *") { 279 printf ("\tVOPARG_OFFSETOF(struct %s_args,a_%s),\n", 280 name, argname[i]); 281 } 282 } 283 print "\tVDESC_NO_OFFSET"; 284 print "};"; 285 # Define F_desc 286 printf("struct vnodeop_desc %s_desc = {\n", name); 287 # offset 288 printf ("\t0,\n"); 289 # printable name 290 printf ("\t\"%s\",\n", name); 291 # flags 292 printf("\t0"); 293 vpnum = 0; 294 for (i=0; i<argc; i++) { 295 if (willrele[i]) { 296 if (argdir[i] ~ /OUT/) { 297 printf(" | VDESC_VPP_WILLRELE"); 298 } else { 299 printf(" | VDESC_VP%s_WILLRELE", vpnum); 300 }; 301 vpnum++; 302 } 303 } 304 print ","; 305 # vp offsets 306 printf ("\t%s_vp_offsets,\n", name); 307 # vpp (if any) 308 do_offset("struct vnode **"); 309 # cred (if any) 310 do_offset("struct ucred *"); 311 # proc (if any) 312 do_offset("struct proc *"); 313 # componentname 314 do_offset("struct componentname *"); 315 # transport layer information 316 printf ("\tNULL,\n};\n"); 317 } 318 END { 319 printf("\n/* Special cases: */\n"); 320 argc=1; 321 argdir[0]="IN"; 322 argtype[0]="struct buf *"; 323 argname[0]="bp"; 324 willrele[0]=0; 325 name="vop_strategy"; 326 doit(); 327 name="vop_bwrite"; 328 doit(); 329 } 330 '"$awk_parser" | sed -e "$anal_retentive" 331 332 # End stuff 333 echo ' 334 /* End of special cases. */' 335 336 # Add the vfs_op_descs array to the C file. 337 # Begin stuff 338 echo ' 339 struct vnodeop_desc *vfs_op_descs[] = { 340 &vop_default_desc, /* MUST BE FIRST */ 341 &vop_strategy_desc, /* XXX: SPECIAL CASE */ 342 &vop_bwrite_desc, /* XXX: SPECIAL CASE */ 343 ' 344 345 # Body stuff 346 sed -e "$sed_prep" $src | $awk ' 347 function doit() { 348 printf("\t&%s_desc,\n", name); 349 } 350 '"$awk_parser" 351 352 # End stuff 353 echo ' NULL 354 }; 355 ' 356 357 exit 0 358 359 # Local Variables: 360 # tab-width: 4 361 # End: 362
Indexes created Thu Oct 02 14:10:14 GMT 2025