4 # Copyright (c) 1992, 1993
5 # The Regents of the University of California. All rights reserved.
7 # Redistribution and use in source and binary forms, with or without
8 # modification, are permitted provided that the following conditions
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 # 4. 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.
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
32 # @(#)vnode_if.sh 8.1 (Berkeley) 6/10/93
35 # Script to produce VFS front-end sugar.
37 # usage: vnode_if.awk <srcfile> [-c | -h | -p | -q]
38 # (where <srcfile> is currently /sys/kern/vnode_if.src)
39 # The source file must have a .src extension
44 print "usage: vnode_if.awk <srcfile> [-c|-h|-p|-q]";
48 function die(msg, what)
50 printf srcfile "(" fnr "): " > "/dev/stderr";
51 printf msg "\n", what > "/dev/stderr";
57 # Append a space if the type is not a pointer
58 return (type ~ /\*$/) ? type : type " ";
61 # These are just for convenience ...
62 function printc(s) {print s > cfile;}
63 function printh(s) {print s > hfile;}
64 function printp(s) {print s > pfile;}
65 function printq(s) {print s > qfile;}
67 function add_debug_code(name, arg, pos, ind)
73 if (lockdata[name, arg, pos] && (lockdata[name, arg, pos] != "-")) {
74 printc(ind"ASSERT_VI_UNLOCKED("star"a->a_"arg", \""uname"\");");
75 # Add assertions for locking
76 if (lockdata[name, arg, pos] == "L")
77 printc(ind"ASSERT_VOP_LOCKED(" star "a->a_"arg", \""uname"\");");
78 else if (lockdata[name, arg, pos] == "U")
79 printc(ind"ASSERT_VOP_UNLOCKED(" star "a->a_"arg", \""uname"\");");
80 else if (lockdata[name, arg, pos] == "E")
81 printc(ind"ASSERT_VOP_ELOCKED(" star "a->a_"arg", \""uname"\");");
88 function add_pre(name)
90 if (lockdata[name, "pre"]) {
91 printc("\t"lockdata[name, "pre"]"(a);");
95 function add_post(name)
97 if (lockdata[name, "post"]) {
98 printc("\t"lockdata[name, "post"]"(a, rc);");
102 function find_arg_with_type (type)
104 for (jj = 0; jj < numargs; jj++) {
105 if (types[jj] == type) {
106 return "VOPARG_OFFSETOF(struct " \
107 name "_args,a_" args[jj] ")";
111 return "VDESC_NO_OFFSET";
116 # Process the command line
117 for (i = 1; i < ARGC; i++) {
119 if (arg !~ /^-[chpq]+$/ && arg !~ /\.src$/)
122 cfile = "vnode_if.c";
124 hfile = "vnode_if.h";
126 pfile = "vnode_if_newproto.h";
128 qfile = "vnode_if_typedef.h";
134 if (!cfile && !hfile && !pfile && !qfile)
142 " * This file is produced automatically.\n" \
143 " * Do not modify anything in here by hand.\n" \
145 " * Created from $FreeBSD$\n" \
151 printp("struct vop_vector {")
152 printp("\tstruct vop_vector\t*vop_default;")
153 printp("\tvop_bypass_t\t*vop_bypass;")
161 printh(common_head "extern struct vnodeop_desc vop_default_desc;");
162 printh("#include \"vnode_if_typedef.h\"")
163 printh("#include \"vnode_if_newproto.h\"")
168 "#include \"opt_kdtrace.h\"\n" \
170 "#include <sys/param.h>\n" \
171 "#include <sys/event.h>\n" \
172 "#include <sys/kernel.h>\n" \
173 "#include <sys/mount.h>\n" \
174 "#include <sys/sdt.h>\n" \
175 "#include <sys/signalvar.h>\n" \
176 "#include <sys/systm.h>\n" \
177 "#include <sys/vnode.h>\n" \
179 "SDT_PROVIDER_DECLARE(vfs);\n" \
181 "struct vnodeop_desc vop_default_desc = {\n" \
184 " (vop_bypass_t *)vop_panic,\n" \
186 " VDESC_NO_OFFSET,\n" \
187 " VDESC_NO_OFFSET,\n" \
188 " VDESC_NO_OFFSET,\n" \
189 " VDESC_NO_OFFSET,\n" \
193 while ((getline < srcfile) > 0) {
199 $2 !~ /^[a-z_]+$/ || $3 !~ /^[a-z]+$/ ||
200 $4 !~ /^.$/ || $5 !~ /^.$/ || $6 !~ /^.$/) {
201 die("Invalid %s construction", "%%");
204 lockdata["vop_" $2, $3, "Entry"] = $4;
205 lockdata["vop_" $2, $3, "OK"] = $5;
206 lockdata["vop_" $2, $3, "Error"] = $6;
212 ($3 != "pre" && $3 != "post")) {
213 die("Invalid %s construction", "%!");
216 lockdata["vop_" $2, $3] = $4;
222 # Get the function name.
224 uname = toupper(name);
226 # Start constructing a ktrpoint string
228 # Get the function arguments.
229 for (numargs = 0; ; ++numargs) {
230 if ((getline < srcfile) <= 0) {
231 die("Unable to read through the arguments for \"%s\"",
238 # Delete comments, if any.
239 gsub (/\/\*.*\*\//, "");
241 # Condense whitespace and delete leading/trailing space.
242 gsub(/[[:space:]]+/, " ");
246 # Pick off direction.
247 if ($1 != "INOUT" && $1 != "IN" && $1 != "OUT")
248 die("No IN/OUT direction for \"%s\".", $0);
252 if ((reles[numargs] = $1) == "WILLRELE")
255 reles[numargs] = "WONTRELE";
258 if (sub(/;$/, "") < 1)
259 die("Missing end-of-line ; in \"%s\".", $0);
261 # pick off variable name
262 if ((argp = match($0, /[A-Za-z0-9_]+$/)) < 1)
263 die("Missing var name \"a_foo\" in \"%s\".", $0);
264 args[numargs] = substr($0, argp);
265 $0 = substr($0, 1, argp - 1);
267 # what is left must be type
268 # remove trailing space (if any)
272 # We can do a maximum of 6 arguments to CTR*
275 ctrstr = ctrstr "(" args[numargs];
277 ctrstr = ctrstr ", " args[numargs];
278 if (types[numargs] ~ /\*/)
279 ctrstr = ctrstr " 0x%lX";
281 ctrstr = ctrstr " %ld";
288 ctrstr = "\tCTR" ctrargs "(KTR_VOP,\n\t " ctrstr ")\",\n\t ";
289 ctrstr = ctrstr "a->a_" args[0];
290 for (i = 1; i < ctrargs; ++i)
291 ctrstr = ctrstr ", a->a_" args[i];
292 ctrstr = ctrstr ");";
295 printp("\t"name"_t\t*"name";")
298 printq("struct "name"_args;")
299 printq("typedef int "name"_t(struct "name"_args *);\n")
303 # Print out the vop_F_args structure.
304 printh("struct "name"_args {\n\tstruct vop_generic_args a_gen;");
305 for (i = 0; i < numargs; ++i)
306 printh("\t" t_spc(types[i]) "a_" args[i] ";");
310 # Print out extern declaration.
311 printh("extern struct vnodeop_desc " name "_desc;");
314 # Print out function prototypes.
315 printh("int " uname "_AP(struct " name "_args *);");
316 printh("int " uname "_APV(struct vop_vector *vop, struct " name "_args *);");
318 printh("static __inline int " uname "(");
319 for (i = 0; i < numargs; ++i) {
320 printh("\t" t_spc(types[i]) args[i] \
321 (i < numargs - 1 ? "," : ")"));
324 printh("\tstruct " name "_args a;");
326 printh("\ta.a_gen.a_desc = &" name "_desc;");
327 for (i = 0; i < numargs; ++i)
328 printh("\ta.a_" args[i] " = " args[i] ";");
329 printh("\treturn (" uname "_APV("args[0]"->v_op, &a));");
336 # Print out the vop_F_vp_offsets structure. This all depends
337 # on naming conventions and nothing else.
338 printc("static int " name "_vp_offsets[] = {");
339 # as a side effect, figure out the releflags
342 for (i = 0; i < numargs; i++) {
343 if (types[i] == "struct vnode *") {
344 printc("\tVOPARG_OFFSETOF(struct " name \
345 "_args,a_" args[i] "),");
346 if (reles[i] == "WILLRELE") {
347 releflags = releflags \
348 "|VDESC_VP" vpnum "_WILLRELE";
354 sub(/^\|/, "", releflags);
355 printc("\tVDESC_NO_OFFSET");
359 printc("SDT_PROBE_DEFINE2(vfs, vop, " name ", entry, \"struct vnode *\", \"struct " name "_args *\");\n");
360 printc("SDT_PROBE_DEFINE3(vfs, vop, " name ", return, \"struct vnode *\", \"struct " name "_args *\", \"int\");\n");
362 # Print out function.
363 printc("\nint\n" uname "_AP(struct " name "_args *a)");
366 printc("\treturn(" uname "_APV(a->a_" args[0] "->v_op, a));");
368 printc("\nint\n" uname "_APV(struct vop_vector *vop, struct " name "_args *a)");
372 printc("\tVNASSERT(a->a_gen.a_desc == &" name "_desc, a->a_" args[0]",");
373 printc("\t (\"Wrong a_desc in " name "(%p, %p)\", a->a_" args[0]", a));");
374 printc("\twhile(vop != NULL && \\");
375 printc("\t vop->"name" == NULL && vop->vop_bypass == NULL)")
376 printc("\t\tvop = vop->vop_default;")
377 printc("\tVNASSERT(vop != NULL, a->a_" args[0]", (\"No "name"(%p, %p)\", a->a_" args[0]", a));")
378 printc("\tSDT_PROBE2(vfs, vop, " name ", entry, a->a_" args[0] ", a);\n");
379 for (i = 0; i < numargs; ++i)
380 add_debug_code(name, args[i], "Entry", "\t");
382 printc("\tVFS_PROLOGUE(a->a_" args[0]"->v_mount);")
383 printc("\tif (vop->"name" != NULL)")
384 printc("\t\trc = vop->"name"(a);")
386 printc("\t\trc = vop->vop_bypass(&a->a_gen);")
387 printc("\tVFS_EPILOGUE(a->a_" args[0]"->v_mount);")
389 printc("\tSDT_PROBE3(vfs, vop, " name ", return, a->a_" args[0] ", a, rc);\n");
390 printc("\tif (rc == 0) {");
391 for (i = 0; i < numargs; ++i)
392 add_debug_code(name, args[i], "OK", "\t\t");
393 printc("\t} else {");
394 for (i = 0; i < numargs; ++i)
395 add_debug_code(name, args[i], "Error", "\t\t");
398 printc("\treturn (rc);");
401 # Print out the vnodeop_desc structure.
402 printc("struct vnodeop_desc " name "_desc = {");
404 printc("\t\"" name "\",");
407 for (i = 0; i < numargs; i++) {
408 if (types[i] == "struct vnode **" && \
409 reles[i] == "WILLRELE") {
410 vppwillrele = "|VDESC_VPP_WILLRELE";
416 printc("\t" releflags vppwillrele ",");
419 printc("\t(vop_bypass_t *)" uname "_AP,");
421 printc("\t" name "_vp_offsets,");
423 printc("\t" find_arg_with_type("struct vnode **") ",");
425 printc("\t" find_arg_with_type("struct ucred *") ",");
427 printc("\t" find_arg_with_type("struct thread *") ",");
429 printc("\t" find_arg_with_type("struct componentname *") ",");
430 # transport layer information