mksubr revision 255219 
1#!/bin/sh
2#
3# Copyright (c) 2006 "David Kirchner" <dpk@dpk.net>. All rights reserved.
4#
5# Redistribution and use in source and binary forms, with or without
6# modification, are permitted provided that the following conditions
7# are met:
8# 1. Redistributions of source code must retain the above copyright
9#    notice, this list of conditions and the following disclaimer.
10# 2. Redistributions in binary form must reproduce the above copyright
11#    notice, this list of conditions and the following disclaimer in the
12#    documentation and/or other materials provided with the distribution.
13#
14# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24# SUCH DAMAGE.
25#
26# $FreeBSD: head/usr.bin/kdump/mksubr 255219 2013-09-05 00:09:56Z pjd $
27#
28# Generates kdump_subr.c
29# mkioctls is a special-purpose script, and works fine as it is
30# now, so it remains independent. The idea behind how it generates
31# its list was heavily borrowed here.
32#
33# Some functions here are automatically generated. This can mean
34# the user will see unusual kdump output or errors while building
35# if the underlying .h files are changed significantly.
36#
37# Key:
38# AUTO: Completely auto-generated with either the "or" or the "switch"
39# method.
40# AUTO - Special: Generated automatically, but with some extra commands
41# that the auto_*_type() functions are inappropriate for.
42# MANUAL: Manually entered and must therefore be manually updated.
43
44set -e
45
46LC_ALL=C; export LC_ALL
47
48if [ -z "$1" ]
49then
50	echo "usage: sh $0 include-dir"
51	exit 1
52fi
53include_dir=$1
54
55#
56# Automatically generates a C function that will print out the
57# numeric input as a pipe-delimited string of the appropriate
58# #define keys. ex:
59# S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH
60# The XOR is necessary to prevent including the "0"-value in every
61# line.
62#
63auto_or_type () {
64	local name grep file
65	name=$1
66	grep=$2
67	file=$3
68
69	cat <<_EOF_
70/* AUTO */
71void
72$name(intmax_t arg)
73{
74	int or = 0;
75	printf("%#jx<", (uintmax_t)arg);
76_EOF_
77	egrep "^#[[:space:]]*define[[:space:]]+"${grep}"[[:space:]]*" \
78		$include_dir/$file | \
79	awk '{ for (i = 1; i <= NF; i++) \
80		if ($i ~ /define/) \
81			break; \
82		++i; \
83		printf "\tif (!((arg > 0) ^ ((%s) > 0)))\n\t\tif_print_or(arg, %s, or);\n", $i, $i }'
84cat <<_EOF_
85	printf(">");
86	if (or == 0)
87		printf("<invalid>%jd", arg);
88}
89
90_EOF_
91}
92
93#
94# Automatically generates a C function used when the argument
95# maps to a single, specific #definition
96#
97auto_switch_type () {
98	local name grep file
99	name=$1
100	grep=$2
101	file=$3
102
103	cat <<_EOF_
104/* AUTO */
105void
106$name(intmax_t arg)
107{
108	switch (arg) {
109_EOF_
110	egrep "^#[[:space:]]*define[[:space:]]+"${grep}"[[:space:]]*" \
111		$include_dir/$file | \
112	awk '{ for (i = 1; i <= NF; i++) \
113		if ($i ~ /define/) \
114			break; \
115		++i; \
116		printf "\tcase %s:\n\t\tprintf(\"%s\");\n\t\tbreak;\n", $i, $i }'
117cat <<_EOF_
118	default: /* Should not reach */
119		printf("<invalid=%jd>", arg);
120	}
121}
122
123_EOF_
124}
125
126#
127# Automatically generates a C function used when the argument
128# maps to a #definition
129#
130auto_if_type () {
131	local name grep file
132	name=$1
133	grep=$2
134	file=$3
135
136	cat <<_EOF_
137/* AUTO */
138void
139$name(intmax_t arg)
140{
141_EOF_
142	egrep "^#[[:space:]]*define[[:space:]]+"${grep}"[[:space:]]*" \
143		$include_dir/$file | \
144	awk '{ printf "\t"; \
145		if (NR > 1) \
146			printf "else " ; \
147		printf "if (arg == %s) \n\t\tprintf(\"%s\");\n", $2, $2 }'
148cat <<_EOF_
149	else /* Should not reach */
150		printf("<invalid=%jd>", arg);
151}
152
153_EOF_
154}
155
156# C start
157
158cat <<_EOF_
159#include <stdint.h>
160#include <stdio.h>
161#include <sys/fcntl.h>
162#include <sys/stat.h>
163#include <sys/unistd.h>
164#include <sys/mman.h>
165#include <sys/wait.h>
166#define _KERNEL
167#include <sys/socket.h>
168#undef _KERNEL
169#include <netinet/in.h>
170#include <sys/param.h>
171#include <sys/mount.h>
172#include <sys/ptrace.h>
173#include <sys/resource.h>
174#include <sys/reboot.h>
175#include <sched.h>
176#include <sys/linker.h>
177#define _KERNEL
178#include <sys/thr.h>
179#undef _KERNEL
180#include <sys/extattr.h>
181#include <sys/acl.h>
182#include <aio.h>
183#include <sys/sem.h>
184#include <sys/ipc.h>
185#include <sys/rtprio.h>
186#include <sys/shm.h>
187#include <nfsserver/nfs.h>
188#include <ufs/ufs/quota.h>
189#include <sys/capability.h>
190#include <vm/vm.h>
191#include <vm/vm_param.h>
192
193#include "kdump_subr.h"
194
195/*
196 * These are simple support macros. print_or utilizes a variable
197 * defined in the calling function to track whether or not it should
198 * print a logical-OR character ('|') before a string. if_print_or
199 * simply handles the necessary "if" statement used in many lines
200 * of this file.
201 */
202#define print_or(str,orflag) do {                  \\
203	if (orflag) putchar('|'); else orflag = 1; \\
204	printf (str); }                            \\
205	while (0)
206#define if_print_or(i,flag,orflag) do {            \\
207	if ((i & flag) == flag)                    \\
208	print_or(#flag,orflag); }                  \\
209	while (0)
210
211/* MANUAL */
212void
213atfdname(int fd, int decimal)
214{
215	if (fd == AT_FDCWD)
216		printf("AT_FDCWD");
217	else if (decimal)
218		printf("%d", fd);
219	else
220		printf("%#x", fd);
221}
222
223/* MANUAL */
224extern char *signames[]; /* from kdump.c */
225void
226signame(int sig)
227{
228	if (sig > 0 && sig < NSIG)
229		printf("SIG%s",signames[sig]);
230	else
231		printf("SIG %d", sig);
232}
233
234/* MANUAL */
235void
236semctlname(int cmd)
237{
238	switch (cmd) {
239	case GETNCNT:
240		printf("GETNCNT");
241		break;
242	case GETPID:
243		printf("GETPID");
244		break;
245	case GETVAL:
246		printf("GETVAL");
247		break;
248	case GETALL:
249		printf("GETALL");
250		break;
251	case GETZCNT:
252		printf("GETZCNT");
253		break;
254	case SETVAL:
255		printf("SETVAL");
256		break;
257	case SETALL:
258		printf("SETALL");
259		break;
260	case IPC_RMID:
261		printf("IPC_RMID");
262		break;
263	case IPC_SET:
264		printf("IPC_SET");
265		break;
266	case IPC_STAT:
267		printf("IPC_STAT");
268		break;
269	default: /* Should not reach */
270		printf("<invalid=%d>", cmd);
271	}
272}
273
274/* MANUAL */
275void
276shmctlname(int cmd)
277{
278	switch (cmd) {
279	case IPC_RMID:
280		printf("IPC_RMID");
281		break;
282	case IPC_SET:
283		printf("IPC_SET");
284		break;
285	case IPC_STAT:
286		printf("IPC_STAT");
287		break;
288	default: /* Should not reach */
289		printf("<invalid=%d>", cmd);
290	}
291}
292
293/* MANUAL */
294void
295semgetname(int flag)
296{
297	int or = 0;
298	if_print_or(flag, IPC_CREAT, or);
299	if_print_or(flag, IPC_EXCL, or);
300	if_print_or(flag, SEM_R, or);
301	if_print_or(flag, SEM_A, or);
302	if_print_or(flag, (SEM_R>>3), or);
303	if_print_or(flag, (SEM_A>>3), or);
304	if_print_or(flag, (SEM_R>>6), or);
305	if_print_or(flag, (SEM_A>>6), or);
306}
307
308/*
309 * MANUAL
310 *
311 * Only used by SYS_open. Unless O_CREAT is set in flags, the
312 * mode argument is unused (and often bogus and misleading).
313 */
314void
315flagsandmodename(int flags, int mode, int decimal)
316{
317	flagsname(flags);
318	putchar(',');
319	if ((flags & O_CREAT) == O_CREAT) {
320		modename (mode);
321	} else {
322		if (decimal) {
323			printf("<unused>%d", mode);
324		} else {
325			printf("<unused>%#x", (unsigned int)mode);
326		}
327	}
328}
329
330/*
331 * MANUAL
332 *
333 * [g|s]etsockopt's level argument can either be SOL_SOCKET or a value
334 * referring to a line in /etc/protocols . It might be appropriate
335 * to use getprotoent(3) here.
336 */
337void
338sockoptlevelname(int level, int decimal)
339{
340	if (level == SOL_SOCKET) {
341		printf("SOL_SOCKET");
342	} else {
343		if (decimal) {
344			printf("%d", level);
345		} else {
346			printf("%#x", (unsigned int)level);
347		}
348	}
349}
350
351/*
352 * MANUAL
353 *
354 * Used for page fault type.  Cannot use auto_or_type since the macro
355 * values contain a cast.  Also, VM_PROT_NONE has to be handled specially.
356 */
357void
358vmprotname (int type)
359{
360	int	or = 0;
361
362	if (type == VM_PROT_NONE) {
363		(void)printf("VM_PROT_NONE");
364		return;
365	}
366	if_print_or(type, VM_PROT_READ, or);
367	if_print_or(type, VM_PROT_WRITE, or);
368	if_print_or(type, VM_PROT_EXECUTE, or);
369	if_print_or(type, VM_PROT_COPY, or);
370}
371
372/*
373 * MANUAL
374 */
375void
376socktypenamewithflags(int type)
377{
378	if (type & SOCK_CLOEXEC)
379		printf("SOCK_CLOEXEC|"), type &= ~SOCK_CLOEXEC;
380	if (type & SOCK_NONBLOCK)
381		printf("SOCK_NONBLOCK|"), type &= ~SOCK_NONBLOCK;
382	socktypename(type);
383}
384_EOF_
385
386auto_or_type     "accessmodename"      "[A-Z]_OK[[:space:]]+0?x?[0-9A-Fa-f]+"         "sys/unistd.h"
387auto_switch_type "acltypename"         "ACL_TYPE_[A-Z4_]+[[:space:]]+0x[0-9]+"        "sys/acl.h"
388auto_or_type     "capfcntlname"        "CAP_FCNTL_[A-Z]+[[:space:]]+\(1"              "sys/capability.h"
389auto_switch_type "extattrctlname"      "EXTATTR_NAMESPACE_[A-Z]+[[:space:]]+0x[0-9]+" "sys/extattr.h"
390auto_switch_type "fadvisebehavname"    "POSIX_FADV_[A-Z]+[[:space:]]+[0-9]+"          "sys/fcntl.h"
391auto_or_type     "flagsname"           "O_[A-Z]+[[:space:]]+0x[0-9A-Fa-f]+"           "sys/fcntl.h"
392auto_or_type     "flockname"           "LOCK_[A-Z]+[[:space:]]+0x[0-9]+"              "sys/fcntl.h"
393auto_or_type     "getfsstatflagsname"  "MNT_[A-Z]+[[:space:]]+[1-9][0-9]*"            "sys/mount.h"
394auto_switch_type "kldsymcmdname"       "KLDSYM_[A-Z]+[[:space:]]+[0-9]+"              "sys/linker.h"
395auto_switch_type "kldunloadfflagsname" "LINKER_UNLOAD_[A-Z]+[[:space:]]+[0-9]+"       "sys/linker.h"
396auto_switch_type "lio_listioname"      "LIO_(NO)?WAIT[[:space:]]+[0-9]+"              "aio.h"
397auto_switch_type "madvisebehavname"    "_?MADV_[A-Z]+[[:space:]]+[0-9]+"              "sys/mman.h"
398auto_switch_type "minheritname"        "INHERIT_[A-Z]+[[:space:]]+[0-9]+"             "sys/mman.h"
399auto_or_type     "mlockallname"        "MCL_[A-Z]+[[:space:]]+0x[0-9]+"               "sys/mman.h"
400auto_or_type     "mmapprotname"        "PROT_[A-Z]+[[:space:]]+0x[0-9A-Fa-f]+"        "sys/mman.h"
401auto_or_type     "modename"            "S_[A-Z]+[[:space:]]+[0-6]{7}"                 "sys/stat.h"
402auto_or_type     "mountflagsname"      "MNT_[A-Z]+[[:space:]]+0x[0-9]+"               "sys/mount.h"
403auto_switch_type "msyncflagsname"      "MS_[A-Z]+[[:space:]]+0x[0-9]+"                "sys/mman.h"
404auto_or_type     "nfssvcname"          "NFSSVC_[A-Z0-9]+[[:space:]]+0x[0-9]+"            "nfs/nfssvc.h"
405auto_switch_type "prioname"            "PRIO_[A-Z]+[[:space:]]+[0-9]"                 "sys/resource.h"
406auto_switch_type "ptraceopname"        "PT_[[:alnum:]_]+[[:space:]]+[0-9]+"           "sys/ptrace.h"
407auto_switch_type "quotactlname"        "Q_[A-Z]+[[:space:]]+0x[0-9]+"                 "ufs/ufs/quota.h"
408auto_or_type     "rebootoptname"       "RB_[A-Z]+[[:space:]]+0x[0-9]+"                "sys/reboot.h"
409auto_or_type     "rforkname"           "RF[A-Z]+[[:space:]]+\([0-9]+<<[0-9]+\)"       "sys/unistd.h"
410auto_switch_type "rlimitname"          "RLIMIT_[A-Z]+[[:space:]]+[0-9]+"              "sys/resource.h"
411auto_switch_type "schedpolicyname"     "SCHED_[A-Z]+[[:space:]]+[0-9]+"               "sched.h"
412auto_switch_type "sendfileflagsname"   "SF_[A-Z]+[[:space:]]+[0-9]+"                  "sys/socket.h"
413auto_or_type     "shmatname"           "SHM_[A-Z]+[[:space:]]+[0-9]{6}+"              "sys/shm.h"
414auto_switch_type "shutdownhowname"     "SHUT_[A-Z]+[[:space:]]+[0-9]+"                "sys/socket.h"
415auto_switch_type "sigbuscodename"      "BUS_[A-Z]+[[:space:]]+[0-9]+"                 "sys/signal.h"
416auto_switch_type "sigchldcodename"     "CLD_[A-Z]+[[:space:]]+[0-9]+"                 "sys/signal.h"
417auto_switch_type "sigfpecodename"      "FPE_[A-Z]+[[:space:]]+[0-9]+"                 "sys/signal.h"
418auto_switch_type "sigprocmaskhowname"  "SIG_[A-Z]+[[:space:]]+[0-9]+"                 "sys/signal.h"
419auto_switch_type "sigillcodename"      "ILL_[A-Z]+[[:space:]]+[0-9]+"                 "sys/signal.h"
420auto_switch_type "sigsegvcodename"     "SEGV_[A-Z]+[[:space:]]+[0-9]+"                 "sys/signal.h"
421auto_switch_type "sigtrapcodename"     "TRAP_[A-Z]+[[:space:]]+[0-9]+"                 "sys/signal.h"
422auto_if_type     "sockdomainname"      "PF_[[:alnum:]]+[[:space:]]+"                  "sys/socket.h"
423auto_if_type     "sockfamilyname"      "AF_[[:alnum:]]+[[:space:]]+"                  "sys/socket.h"
424auto_if_type     "sockipprotoname"     "IPPROTO_[[:alnum:]]+[[:space:]]+"             "netinet/in.h"
425auto_switch_type "sockoptname"         "SO_[A-Z]+[[:space:]]+0x[0-9]+"                "sys/socket.h"
426auto_switch_type "socktypename"        "SOCK_[A-Z]+[[:space:]]+[1-9]+[0-9]*"          "sys/socket.h"
427auto_or_type     "thrcreateflagsname"  "THR_[A-Z]+[[:space:]]+0x[0-9]+"               "sys/thr.h"
428auto_switch_type "vmresultname"        "KERN_[A-Z]+[[:space:]]+[0-9]+"                "vm/vm_param.h"
429auto_or_type     "wait4optname"        "W[A-Z]+[[:space:]]+[0-9]+"                    "sys/wait.h"
430auto_switch_type "whencename"          "SEEK_[A-Z]+[[:space:]]+[0-9]+"                "sys/unistd.h"
431
432cat <<_EOF_
433/*
434 * AUTO - Special
435 * F_ is used to specify fcntl commands as well as arguments. Both sets are
436 * grouped in fcntl.h, and this awk script grabs the first group.
437 */
438void
439fcntlcmdname(int cmd, int arg, int decimal)
440{
441	switch (cmd) {
442_EOF_
443egrep "^#[[:space:]]*define[[:space:]]+F_[A-Z0-9_]+[[:space:]]+[0-9]+[[:space:]]*" \
444	$include_dir/sys/fcntl.h | \
445	awk 'BEGIN { o=0 } { for (i = 1; i <= NF; i++) \
446		if ($i ~ /define/) \
447			break; \
448		++i; \
449		if (o <= $(i+1)) \
450			printf "\tcase %s:\n\t\tprintf(\"%s\");\n\t\tbreak;\n", $i, $i; \
451		else \
452			exit; \
453		o = $(i+1) }'
454cat <<_EOF_
455	default: /* Should not reach */
456		printf("<invalid=%d>", cmd);
457	}
458	putchar(',');
459	if (cmd == F_GETFD || cmd == F_SETFD) {
460		if (arg == FD_CLOEXEC)
461			printf("FD_CLOEXEC");
462		else if (arg == 0)
463			printf("0");
464		else {
465			if (decimal)
466				printf("<invalid>%d", arg);
467			else
468				printf("<invalid>%#x", (unsigned int)arg);
469		}
470	} else if (cmd == F_SETFL) {
471		flagsname(arg);
472	} else {
473		if (decimal)
474			printf("%d", arg);
475		else
476			printf("%#x", (unsigned int)arg);
477	}
478}
479
480/*
481 * AUTO - Special
482 *
483 * The MAP_ALIGNED flag requires special handling.
484 */
485void
486mmapflagsname(int flags)
487{
488	int align;
489	int or = 0;
490	printf("%#x<", flags);
491_EOF_
492egrep "^#[[:space:]]*define[[:space:]]+MAP_[A-Z_]+[[:space:]]+0x[0-9A-Fa-f]+[[:space:]]*" \
493	$include_dir/sys/mman.h | grep -v MAP_ALIGNED | \
494	awk '{ for (i = 1; i <= NF; i++) \
495		if ($i ~ /define/) \
496			break; \
497		++i; \
498		printf "\tif (!((flags > 0) ^ ((%s) > 0)))\n\t\tif_print_or(flags, %s, or);\n", $i, $i }'
499cat <<_EOF_
500	align = flags & MAP_ALIGNMENT_MASK;
501	if (align != 0) {
502		if (align == MAP_ALIGNED_SUPER)
503			print_or("MAP_ALIGNED_SUPER", or);
504		else {
505			print_or("MAP_ALIGNED", or);
506			printf("(%d)", align >> MAP_ALIGNMENT_SHIFT);
507		}
508	}
509	printf(">");
510	if (or == 0)
511		printf("<invalid>%d", flags);
512}
513
514/*
515 * AUTO - Special
516 *
517 * The only reason this is not fully automated is due to the
518 * grep -v RTP_PRIO statement. A better egrep line should
519 * make this capable of being a auto_switch_type() function.
520 */
521void
522rtprioname(int func)
523{
524	switch (func) {
525_EOF_
526egrep "^#[[:space:]]*define[[:space:]]+RTP_[A-Z]+[[:space:]]+0x[0-9]+[[:space:]]*" \
527	$include_dir/sys/rtprio.h | grep -v RTP_PRIO | \
528	awk '{ for (i = 1; i <= NF; i++) \
529		if ($i ~ /define/) \
530			break; \
531		++i; \
532		printf "\tcase %s:\n\t\tprintf(\"%s\");\n\t\tbreak;\n", $i, $i }'
533cat <<_EOF_
534	default: /* Should not reach */
535		printf("<invalid=%d>", func);
536	}
537}
538
539/*
540 * AUTO - Special
541 *
542 * The send and recv functions have a flags argument which can be
543 * set to 0. There is no corresponding #define. The auto_ functions
544 * detect this as "invalid", which is incorrect here.
545 */
546void
547sendrecvflagsname(int flags)
548{
549	int or = 0;
550
551	if (flags == 0) {
552		printf("0");
553		return;
554	}
555
556	printf("%#x<", flags);
557_EOF_
558egrep "^#[[:space:]]*define[[:space:]]+MSG_[A-Z]+[[:space:]]+0x[0-9]+[[:space:]]*" $include_dir/sys/socket.h | \
559	awk '{ for (i = 1; i <= NF; i++) \
560		if ($i ~ /define/) \
561			break; \
562		++i; \
563		printf "\tif(!((flags>0)^((%s)>0)))\n\t\tif_print_or(flags, %s, or);\n", $i, $i }'
564cat <<_EOF_
565	printf(">");
566}
567
568/*
569 * AUTO - Special
570 *
571 * Check general codes first, then defer to signal-specific codes.
572 */
573void
574sigcodename(int sig, int code)
575{
576	switch (code) {
577_EOF_
578egrep "^#[[:space:]]*define[[:space:]]+SI_[A-Z]+[[:space:]]+0(x[0-9abcdef]+)?[[:space:]]*" \
579	$include_dir/sys/signal.h | grep -v SI_UNDEFINED | \
580	awk '{ for (i = 1; i <= NF; i++) \
581		if ($i ~ /define/) \
582			break; \
583		++i; \
584		printf "\tcase %s:\n\t\tprintf(\"%s\");\n\t\tbreak;\n", $i, $i }'
585cat <<_EOF_
586	default:
587		switch (sig) {
588		case SIGILL:
589			sigillcodename(code);
590			break;
591		case SIGBUS:
592			sigbuscodename(code);
593			break;
594		case SIGSEGV:
595			sigsegvcodename(code);
596			break;
597		case SIGFPE:
598			sigfpecodename(code);
599			break;
600		case SIGTRAP:
601			sigtrapcodename(code);
602			break;
603		case SIGCHLD:
604			sigchldcodename(code);
605			break;
606		default:
607			printf("<invalid=%#x>", code);
608		}
609	}
610}
611
612_EOF_
613egrep '#define[[:space:]]+CAP_[A-Z_]+[[:space:]]+CAPRIGHT\([0-9],[[:space:]]+0x[0-9]{16}ULL\)' \
614	$include_dir/sys/capability.h | \
615	sed -E 's/[	]+/ /g' | \
616	awk -F '[   \(,\)]' '
617	BEGIN {
618		printf "void\n"
619		printf "capname(const cap_rights_t *rightsp)\n"
620		printf "{\n"
621		printf "\tint comma = 0;\n\n"
622		printf "\tprintf(\"<\");\n"
623	}
624	{
625		printf "\tif ((rightsp->cr_rights[%s] & %s) == %s) {\n", $4, $2, $2
626		printf "\t\tif (comma) printf(\",\"); else comma = 1;\n"
627		printf "\t\tprintf(\"%s\");\n", $2
628		printf "\t}\n"
629	}
630	END {
631		printf "\tprintf(\">\");\n"
632		printf "}\n"
633	}'
634