![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to vnode_if.sh CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Apple Darwin 0.x] / kernel / bsd / vfs|
Return to vnode_if.sh CVS log | Up to [Apple Darwin 0.x] / kernel / bsd / vfs |
1.1 root 1: #!/bin/sh -
2: copyright='
3: /*
4: * Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved
5: * Copyright (c) 1992, 1993, 1994, 1995
6: * The Regents of the University of California. All rights reserved.
7: *
8: # Redistribution and use in source and binary forms, with or without
9: # modification, are permitted provided that the following conditions
10: # are met:
11: # 1. Redistributions of source code must retain the above copyright
12: # notice, this list of conditions and the following disclaimer.
13: # 2. Redistributions in binary form must reproduce the above copyright
14: # notice, this list of conditions and the following disclaimer in the
15: # documentation and/or other materials provided with the distribution.
16: # 3. All advertising materials mentioning features or use of this software
17: # must display the following acknowledgement:
18: # This product includes software developed by the University of
19: # California, Berkeley and its contributors.
20: # 4. Neither the name of the University nor the names of its contributors
21: # may be used to endorse or promote products derived from this software
22: # without specific prior written permission.
23: #
24: # THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: # ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: # SUCH DAMAGE.
35: *
36: * from: NetBSD: vnode_if.sh,v 1.7 1994/08/25 03:04:28 cgd Exp $
37: */
38: '
39: SCRIPT_ID='@(#)vnode_if.sh 8.7 (Berkeley) 5/11/95'
40:
41: # Script to produce VFS front-end sugar.
42: #
43: # usage: vnode_if.sh srcfile
44: # (where srcfile is currently /sys/kern/vnode_if.src)
45: #
46:
47: if [ $# -ne 1 ] ; then
48: echo 'usage: vnode_if.sh srcfile'
49: exit 1
50: fi
51:
52: # Name of the source file.
53: src=$1
54:
55: # Names of the created files.
56: out_c=vnode_if.c
57: out_h=vnode_if.h
58:
59: # Awk program (must support nawk extensions)
60: # Use "awk" at Berkeley, "nawk" or "gawk" elsewhere.
61: #awk=${AWK:-awk}
62: awk=${AWK:-gawk}
63:
64: # Does this awk have a "toupper" function? (i.e. is it GNU awk)
65: isgawk=`$awk 'BEGIN { print toupper("true"); exit; }' 2>/dev/null`
66:
67: # If this awk does not define "toupper" then define our own.
68: if [ "$isgawk" = TRUE ] ; then
69: # GNU awk provides it.
70: toupper=
71: else
72: # Provide our own toupper()
73: toupper='
74: function toupper(str) {
75: _toupper_cmd = "echo "str" |tr a-z A-Z"
76: _toupper_cmd | getline _toupper_str;
77: close(_toupper_cmd);
78: return _toupper_str;
79: }'
80: fi
81:
82: #
83: # This is the common part of all awk programs that read $src
84: # This parses the input for one function into the arrays:
85: # argdir, argtype, argname, willrele
86: # and calls "doit()" to generate output for the function.
87: #
88: # Input to this parser is pre-processed slightly by sed
89: # so this awk parser doesn't have to work so hard. The
90: # changes done by the sed pre-processing step are:
91: # insert a space beween * and pointer name
92: # replace semicolons with spaces
93: #
94: sed_prep='s:\*\([^\*/]\):\* \1:g
95: s/;/ /'
96: awk_parser='
97: # Comment line
98: /^#/ { next; }
99: # First line of description
100: /^vop_/ {
101: name=$1;
102: argc=0;
103: next;
104: }
105: # Last line of description
106: /^}/ {
107: doit();
108: next;
109: }
110: # Middle lines of description
111: {
112: argdir[argc] = $1; i=2;
113: if ($2 == "WILLRELE") {
114: willrele[argc] = 1;
115: i++;
116: } else
117: willrele[argc] = 0;
118: argtype[argc] = $i; i++;
119: while (i < NF) {
120: argtype[argc] = argtype[argc]" "$i;
121: i++;
122: }
123: argname[argc] = $i;
124: argc++;
125: next;
126: }
127: '
128:
129: # This is put after the copyright on each generated file.
130: warning="
131: /*
132: * Warning: This file is generated automatically.
133: * (Modifications made here may easily be lost!)
134: *
135: * Created by the script:
136: * ${SCRIPT_ID}
137: */
138: "
139:
140: # Get rid of ugly spaces
141: space_elim='s:\([^/]\*\) :\1:g'
142:
143: #
144: # Redirect stdout to the H file.
145: #
146: echo "$0: Creating $out_h" 1>&2
147: exec > $out_h
148:
149: # Begin stuff
150: echo "$copyright"
151: echo "$warning"
152: echo '
153: extern struct vnodeop_desc vop_default_desc;
154: '
155:
156: # Body stuff
157: # This awk program needs toupper() so define it if necessary.
158: sed -e "$sed_prep" $src | $awk "$toupper"'
159: function doit() {
160: # Declare arg struct, descriptor.
161: printf("\nstruct %s_args {\n", name);
162: printf("\tstruct vnodeop_desc * a_desc;\n");
163: for (i=0; i<argc; i++) {
164: printf("\t%s a_%s;\n", argtype[i], argname[i]);
165: }
166: printf("};\n");
167: printf("extern struct vnodeop_desc %s_desc;\n", name);
168: # Define inline function.
169: printf("#define %s(", toupper(name));
170: for (i=0; i<argc; i++) {
171: printf("%s", argname[i]);
172: if (i < (argc-1)) printf(", ");
173: }
174: printf(") _%s(", toupper(name));
175: for (i=0; i<argc; i++) {
176: printf("%s", argname[i]);
177: if (i < (argc-1)) printf(", ");
178: }
179: printf(")\n");
180: printf("static __inline int _%s(", toupper(name));
181: for (i=0; i<argc; i++) {
182: printf("%s", argname[i]);
183: if (i < (argc-1)) printf(", ");
184: }
185: printf(")\n");
186: for (i=0; i<argc; i++) {
187: printf("\t%s %s;\n", argtype[i], argname[i]);
188: }
189: printf("{\n\tstruct %s_args a;\n", name);
190: printf("\ta.a_desc = VDESC(%s);\n", name);
191: for (i=0; i<argc; i++) {
192: printf("\ta.a_%s = %s;\n", argname[i], argname[i]);
193: }
194: printf("\treturn (VCALL(%s%s, VOFFSET(%s), &a));\n}\n",
195: argname[0], arg0special, name);
196: }
197: BEGIN {
198: arg0special="";
199: }
200: END {
201: printf("\n/* Special cases: */\n#include <sys/buf.h>\n#include <sys/vm.h>\n");
202: argc=1;
203: argtype[0]="struct buf *";
204: argname[0]="bp";
205: arg0special="->b_vp";
206: name="vop_strategy";
207: doit();
208: name="vop_bwrite";
209: doit();
210: }
211: '"$awk_parser" | sed -e "$space_elim"
212:
213: # End stuff
214: echo '
215: /* End of special cases. */'
216:
217:
218: #
219: # Redirect stdout to the C file.
220: #
221: echo "$0: Creating $out_c" 1>&2
222: exec > $out_c
223:
224: # Begin stuff
225: echo "$copyright"
226: echo "$warning"
227: echo '
228: #include <sys/param.h>
229: #include <sys/mount.h>
230: #include <sys/vm.h>
231: #include <sys/vnode.h>
232:
233: struct vnodeop_desc vop_default_desc = {
234: 0,
235: "default",
236: 0,
237: NULL,
238: VDESC_NO_OFFSET,
239: VDESC_NO_OFFSET,
240: VDESC_NO_OFFSET,
241: VDESC_NO_OFFSET,
242: NULL,
243: };
244: '
245:
246: # Body stuff
247: sed -e "$sed_prep" $src | $awk '
248: function do_offset(typematch) {
249: for (i=0; i<argc; i++) {
250: if (argtype[i] == typematch) {
251: printf("\tVOPARG_OFFSETOF(struct %s_args, a_%s),\n",
252: name, argname[i]);
253: return i;
254: };
255: };
256: print "\tVDESC_NO_OFFSET,";
257: return -1;
258: }
259:
260: function doit() {
261: # Define offsets array
262: printf("\nint %s_vp_offsets[] = {\n", name);
263: for (i=0; i<argc; i++) {
264: if (argtype[i] == "struct vnode *") {
265: printf ("\tVOPARG_OFFSETOF(struct %s_args,a_%s),\n",
266: name, argname[i]);
267: }
268: }
269: print "\tVDESC_NO_OFFSET";
270: print "};";
271: # Define F_desc
272: printf("struct vnodeop_desc %s_desc = {\n", name);
273: # offset
274: printf ("\t0,\n");
275: # printable name
276: printf ("\t\"%s\",\n", name);
277: # flags
278: printf("\t0");
279: vpnum = 0;
280: for (i=0; i<argc; i++) {
281: if (willrele[i]) {
282: if (argdir[i] ~ /OUT/) {
283: printf(" | VDESC_VPP_WILLRELE");
284: } else {
285: printf(" | VDESC_VP%s_WILLRELE", vpnum);
286: };
287: vpnum++;
288: }
289: }
290: print ",";
291: # vp offsets
292: printf ("\t%s_vp_offsets,\n", name);
293: # vpp (if any)
294: do_offset("struct vnode **");
295: # cred (if any)
296: do_offset("struct ucred *");
297: # proc (if any)
298: do_offset("struct proc *");
299: # componentname
300: do_offset("struct componentname *");
301: # transport layer information
302: printf ("\tNULL,\n};\n");
303: }
304: END {
305: printf("\n/* Special cases: */\n");
306: argc=1;
307: argdir[0]="IN";
308: argtype[0]="struct buf *";
309: argname[0]="bp";
310: willrele[0]=0;
311: name="vop_strategy";
312: doit();
313: name="vop_bwrite";
314: doit();
315: }
316: '"$awk_parser" | sed -e "$space_elim"
317:
318: # End stuff
319: echo '
320: /* End of special cases. */'
321:
322: # Add the vfs_op_descs array to the C file.
323: # Begin stuff
324: echo '
325: struct vnodeop_desc *vfs_op_descs[] = {
326: &vop_default_desc, /* MUST BE FIRST */
327: &vop_strategy_desc, /* XXX: SPECIAL CASE */
328: &vop_bwrite_desc, /* XXX: SPECIAL CASE */
329: '
330:
331: # Body stuff
332: sed -e "$sed_prep" $src | $awk '
333: function doit() {
334: printf("\t&%s_desc,\n", name);
335: }
336: '"$awk_parser"
337:
338: # End stuff
339: echo ' NULL
340: };
341: '
342:
343: exit 0
344:
345: # Local Variables:
346: # tab-width: 4
347: # End:
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.