1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
|
/* Install modified versions of certain ANSI-incompatible system header
files which are fixed to work correctly with ANSI C and placed in a
directory that GNU C will search.
Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "fixlib.h"
#if defined( HAVE_MMAP_FILE )
#include <sys/mman.h>
#define BAD_ADDR ((void*)-1)
#endif
#include <signal.h>
#ifndef SEPARATE_FIX_PROC
#include "server.h"
#endif
/* The contents of this string are not very important. It is mostly
just used as part of the "I am alive and working" test. */
static const char program_id[] = "fixincl version 1.1";
/* This format will be used at the start of every generated file */
static const char z_std_preamble[] =
"/* DO NOT EDIT THIS FILE.\n\n\
It has been auto-edited by fixincludes from:\n\n\
\t\"%s/%s\"\n\n\
This had to be done to correct non-standard usages in the\n\
original, manufacturer supplied header file. */\n\n";
/* Working environment strings. Essentially, invocation 'options'. */
#define _ENV_(v,m,n,t) tCC* v = NULL;
ENV_TABLE
#undef _ENV_
int find_base_len = 0;
typedef enum {
VERB_SILENT = 0,
VERB_FIXES,
VERB_APPLIES,
VERB_PROGRESS,
VERB_TESTS,
VERB_EVERYTHING
} te_verbose;
te_verbose verbose_level = VERB_PROGRESS;
int have_tty = 0;
#define VLEVEL(l) (verbose_level >= l)
#define NOT_SILENT VLEVEL(VERB_FIXES)
pid_t process_chain_head = (pid_t) -1;
char* pz_curr_file; /* name of the current file under test/fix */
char* pz_curr_data; /* original contents of that file */
char* pz_temp_file; /* for DOS, a place to stash the temporary
fixed data between system(3) calls */
t_bool curr_data_mapped;
int data_map_fd;
size_t data_map_size;
size_t ttl_data_size = 0;
#ifdef DO_STATS
int process_ct = 0;
int apply_ct = 0;
int fixed_ct = 0;
int altered_ct = 0;
#endif /* DO_STATS */
const char incl_quote_pat[] = "^[ \t]*#[ \t]*include[ \t]*\"[^/]";
tSCC z_fork_err[] = "Error %d (%s) starting filter process for %s\n";
regex_t incl_quote_re;
static void do_version PARAMS((void)) ATTRIBUTE_NORETURN;
char *load_file PARAMS((const char *));
void run_compiles PARAMS((void));
void initialize PARAMS((int argc,char** argv));
void process PARAMS((void));
/* External Source Code */
#include "fixincl.x"
/* * * * * * * * * * * * * * * * * * *
*
* MAIN ROUTINE
*/
extern int main PARAMS ((int, char **));
int
main (argc, argv)
int argc;
char **argv;
{
char *file_name_buf;
initialize ( argc, argv );
have_tty = isatty (fileno (stderr));
/* Before anything else, ensure we can allocate our file name buffer. */
file_name_buf = load_file_data (stdin);
/* Because of the way server shells work, you have to keep stdin, out
and err open so that the proper input file does not get closed
by accident */
freopen ("/dev/null", "r", stdin);
if (file_name_buf == (char *) NULL)
{
fputs ("No file names listed for fixing\n", stderr);
exit (EXIT_FAILURE);
}
for (;;)
{
char* pz_end;
/* skip to start of name, past any "./" prefixes */
while (ISSPACE (*file_name_buf)) file_name_buf++;
while ((file_name_buf[0] == '.') && (file_name_buf[1] == '/'))
file_name_buf += 2;
/* Check for end of list */
if (*file_name_buf == NUL)
break;
/* Set global file name pointer and find end of name */
pz_curr_file = file_name_buf;
pz_end = strchr( pz_curr_file, '\n' );
if (pz_end == (char*)NULL)
pz_end = file_name_buf = pz_curr_file + strlen (pz_curr_file);
else
file_name_buf = pz_end + 1;
while ((pz_end > pz_curr_file) && ISSPACE( pz_end[-1])) pz_end--;
/* IF no name is found (blank line) or comment marker, skip line */
if ((pz_curr_file == pz_end) || (*pz_curr_file == '#'))
continue;
*pz_end = NUL;
process ();
} /* for (;;) */
#ifdef DO_STATS
if (VLEVEL( VERB_PROGRESS )) {
tSCC zFmt[] =
"\
Processed %5d files containing %d bytes \n\
Applying %5d fixes to %d files\n\
Altering %5d of them\n";
fprintf (stderr, zFmt, process_ct, ttl_data_size, apply_ct,
fixed_ct, altered_ct);
}
#endif /* DO_STATS */
# ifdef SEPARATE_FIX_PROC
unlink( pz_temp_file );
# endif
exit (EXIT_SUCCESS);
}
static void
do_version ()
{
static const char zFmt[] = "echo '%s'";
char zBuf[ 1024 ];
/* The 'version' option is really used to test that:
1. The program loads correctly (no missing libraries)
2. that we can compile all the regular expressions.
3. we can correctly run our server shell process
*/
run_compiles ();
sprintf (zBuf, zFmt, program_id);
#ifndef SEPARATE_FIX_PROC
puts (zBuf + 5);
exit (strcmp (run_shell (zBuf), program_id));
#else
exit (system (zBuf));
#endif
}
/* * * * * * * * * * * * */
void
initialize ( argc, argv )
int argc;
char** argv;
{
static const char var_not_found[] =
"fixincl ERROR: %s environment variable not defined\n"
#ifdef __STDC__
"each of these must be defined:\n"
#define _ENV_(v,m,n,t) "\t" n " - " t "\n"
ENV_TABLE
#undef _ENV_
#endif
;
xmalloc_set_program_name (argv[0]);
switch (argc)
{
case 1:
break;
case 2:
if (strcmp (argv[1], "-v") == 0)
do_version ();
if (freopen (argv[1], "r", stdin) == (FILE*)NULL)
{
fprintf (stderr, "Error %d (%s) reopening %s as stdin\n",
errno, xstrerror (errno), argv[1] );
exit (EXIT_FAILURE);
}
break;
default:
fputs ("fixincl ERROR: too many command line arguments\n", stderr);
exit (EXIT_FAILURE);
}
#define _ENV_(v,m,n,t) { tSCC var[] = n; \
v = getenv (var); if (m && (v == NULL)) { \
fprintf (stderr, var_not_found, var); \
exit (EXIT_FAILURE); } }
ENV_TABLE
#undef _ENV_
if (ISDIGIT ( *pz_verbose ))
verbose_level = (te_verbose)atoi( pz_verbose );
else
switch (*pz_verbose) {
case 's':
case 'S':
verbose_level = VERB_SILENT; break;
case 'f':
case 'F':
verbose_level = VERB_FIXES; break;
case 'a':
case 'A':
verbose_level = VERB_APPLIES; break;
case 'p':
case 'P':
verbose_level = VERB_PROGRESS; break;
case 't':
case 'T':
verbose_level = VERB_TESTS; break;
case 'e':
case 'E':
verbose_level = VERB_EVERYTHING; break;
}
while ((pz_find_base[0] == '.') && (pz_find_base[1] == '/'))
pz_find_base += 2;
if ((pz_find_base[0] != '.') || (pz_find_base[1] != NUL))
find_base_len = strlen( pz_find_base );
/* Compile all the regular expressions now.
That way, it is done only once for the whole run.
*/
run_compiles ();
# ifdef SEPARATE_FIX_PROC
/* NULL as the first argument to `tempnam' causes it to DTRT
wrt the temporary directory where the file will be created. */
pz_temp_file = tempnam( NULL, "fxinc" );
# endif
signal (SIGQUIT, SIG_IGN);
#ifdef SIGIOT
signal (SIGIOT, SIG_IGN);
#endif
#ifdef SIGPIPE
signal (SIGPIPE, SIG_IGN);
#endif
signal (SIGALRM, SIG_IGN);
signal (SIGTERM, SIG_IGN);
}
/* * * * * * * * * * * * *
load_file loads all the contents of a file into malloc-ed memory.
Its argument is the name of the file to read in; the returned
result is the NUL terminated contents of the file. The file
is presumed to be an ASCII text file containing no NULs. */
char *
load_file ( fname )
const char* fname;
{
struct stat stbf;
char* res;
if (stat (fname, &stbf) != 0)
{
if (NOT_SILENT)
fprintf (stderr, "error %d (%s) stat-ing %s\n",
errno, xstrerror (errno), fname );
return (char *) NULL;
}
if (stbf.st_size == 0)
return (char*)NULL;
/* Make the data map size one larger than the file size for documentation
purposes. Truth is that there will be a following NUL character if
the file size is not a multiple of the page size. If it is a multiple,
then this adjustment sometimes fails anyway. */
data_map_size = stbf.st_size+1;
data_map_fd = open (fname, O_RDONLY);
ttl_data_size += data_map_size-1;
if (data_map_fd < 0)
{
if (NOT_SILENT)
fprintf (stderr, "error %d (%s) opening %s for read\n",
errno, xstrerror (errno), fname);
return (char*)NULL;
}
#ifdef HAVE_MMAP_FILE
curr_data_mapped = BOOL_TRUE;
/* IF the file size is a multiple of the page size,
THEN sometimes you will seg fault trying to access a trailing byte */
if ((stbf.st_size & (getpagesize()-1)) == 0)
res = (char*)BAD_ADDR;
else
res = (char*)mmap ((void*)NULL, data_map_size, PROT_READ,
MAP_PRIVATE, data_map_fd, 0);
if (res == (char*)BAD_ADDR)
{
curr_data_mapped = BOOL_FALSE;
res = load_file_data ( fdopen (data_map_fd, "r"));
}
#else
curr_data_mapped = BOOL_FALSE;
res = load_file_data ( fdopen (data_map_fd, "r"));
#endif
return res;
}
static int machine_matches PARAMS ((tFixDesc *));
static int
machine_matches( p_fixd )
tFixDesc *p_fixd;
{
# ifndef SEPARATE_FIX_PROC
tSCC case_fmt[] = "case %s in\n"; /* 9 bytes, plus string */
tSCC esac_fmt[] =
" )\n echo %s ;;\n* ) echo %s ;;\nesac";/* 4 bytes */
tSCC skip[] = "skip"; /* 4 bytes */
tSCC run[] = "run"; /* 3 bytes */
/* total bytes to add to machine sum: 49 - see fixincl.tpl */
const char **papz_machs = p_fixd->papz_machs;
char *pz;
const char *pz_sep = "";
tCC *pz_if_true;
tCC *pz_if_false;
char cmd_buf[ MACH_LIST_SIZE_LIMIT ]; /* size lim from fixincl.tpl */
/* Start the case statement */
sprintf (cmd_buf, case_fmt, pz_machine);
pz = cmd_buf + strlen (cmd_buf);
/* Determine if a match means to apply the fix or not apply it */
if (p_fixd->fd_flags & FD_MACH_IFNOT)
{
pz_if_true = skip;
pz_if_false = run;
}
else
{
pz_if_true = run;
pz_if_false = skip;
}
/* Emit all the machine names. If there are more than one,
then we will insert " | \\\n" between the names */
for (;;)
{
const char* pz_mach = *(papz_machs++);
if (pz_mach == (const char*) NULL)
break;
sprintf (pz, "%s%s", pz_sep, pz_mach);
pz += strlen (pz);
pz_sep = " | \\\n";
}
/* Now emit the match and not-match actions and the esac */
sprintf (pz, esac_fmt, pz_if_true, pz_if_false);
/* Run the script.
The result will start either with 's' or 'r'. */
{
int skip;
pz = run_shell (cmd_buf);
skip = (*pz == 's');
free ( (void*)pz );
if (skip)
{
p_fixd->fd_flags |= FD_SKIP_TEST;
return BOOL_FALSE;
}
}
return BOOL_TRUE;
# else /* is SEPARATE_FIX_PROC */
const char **papz_machs = p_fixd->papz_machs;
int invert = (p_fixd->fd_flags & FD_MACH_IFNOT) != 0;
for (;;)
{
const char* pz_mach = *(papz_machs++);
if (pz_mach == (const char*) NULL)
break;
if (strstr (pz_mach, "dos") != NULL && !invert)
return BOOL_TRUE;
}
p_fixd->fd_flags |= FD_SKIP_TEST;
return BOOL_FALSE;
# endif
}
/* * * * * * * * * * * * *
run_compiles run all the regexp compiles for all the fixes once.
*/
void
run_compiles ()
{
tFixDesc *p_fixd = fixDescList;
int fix_ct = FIX_COUNT;
regex_t *p_re = (regex_t *) xmalloc (REGEX_COUNT * sizeof (regex_t));
/* Make sure compile_re does not stumble across invalid data */
memset ( (void*)p_re, '\0', REGEX_COUNT * sizeof (regex_t) );
memset ( (void*)&incl_quote_re, '\0', sizeof (regex_t) );
compile_re (incl_quote_pat, &incl_quote_re, 1,
"quoted include", "run_compiles");
/* Allow machine name tests to be ignored (testing, mainly) */
if (pz_machine && ((*pz_machine == '\0') || (*pz_machine == '*')))
pz_machine = (char*)NULL;
/* FOR every fixup, ... */
do
{
tTestDesc *p_test = p_fixd->p_test_desc;
int test_ct = p_fixd->test_ct;
/* IF the machine type pointer is not NULL (we are not in test mode)
AND this test is for or not done on particular machines
THEN ... */
if ( (pz_machine != NULL)
&& (p_fixd->papz_machs != (const char**) NULL)
&& ! machine_matches (p_fixd) )
continue;
/* FOR every test for the fixup, ... */
while (--test_ct >= 0)
{
switch (p_test->type)
{
case TT_EGREP:
case TT_NEGREP:
p_test->p_test_regex = p_re++;
compile_re (p_test->pz_test_text, p_test->p_test_regex, 0,
"select test", p_fixd->fix_name);
default: break;
}
p_test++;
}
}
while (p_fixd++, --fix_ct > 0);
}
/* * * * * * * * * * * * *
create_file Create the output modified file.
Input: the name of the file to create
Returns: a file pointer to the new, open file */
#if defined(S_IRUSR) && defined(S_IWUSR) && \
defined(S_IRGRP) && defined(S_IROTH)
# define S_IRALL (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)
#else
# define S_IRALL 0644
#endif
#if defined(S_IRWXU) && defined(S_IRGRP) && defined(S_IXGRP) && \
defined(S_IROTH) && defined(S_IXOTH)
# define S_DIRALL (S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH)
#else
# define S_DIRALL 0755
#endif
static FILE *create_file PARAMS ((void));
static FILE *
create_file ()
{
int fd;
FILE *pf;
char fname[MAXPATHLEN];
sprintf (fname, "%s/%s", pz_dest_dir, pz_curr_file + find_base_len);
fd = open (fname, O_WRONLY | O_CREAT | O_TRUNC, S_IRALL);
/* We may need to create the directories needed... */
if ((fd < 0) && (errno == ENOENT))
{
char *pz_dir = strchr (fname + 1, '/');
struct stat stbf;
while (pz_dir != (char *) NULL)
{
*pz_dir = NUL;
if (stat (fname, &stbf) < 0)
{
mkdir (fname, S_IFDIR | S_DIRALL);
}
*pz_dir = '/';
pz_dir = strchr (pz_dir + 1, '/');
}
/* Now, lets try the open again... */
fd = open (fname, O_WRONLY | O_CREAT | O_TRUNC, S_IRALL);
}
if (fd < 0)
{
fprintf (stderr, "Error %d (%s) creating %s\n",
errno, xstrerror (errno), fname);
exit (EXIT_FAILURE);
}
if (NOT_SILENT)
fprintf (stderr, "Fixed: %s\n", pz_curr_file);
pf = fdopen (fd, "w");
/*
* IF pz_machine is NULL, then we are in some sort of test mode.
* Do not insert the current directory name. Use a constant string.
*/
fprintf (pf, z_std_preamble,
(pz_machine == NULL)
? "fixinc/tests/inc"
: pz_input_dir,
pz_curr_file);
return pf;
}
/* * * * * * * * * * * * *
test_test make sure a shell-style test expression passes.
Input: a pointer to the descriptor of the test to run and
the name of the file that we might want to fix
Result: APPLY_FIX or SKIP_FIX, depending on the result of the
shell script we run. */
#ifndef SEPARATE_FIX_PROC
static int test_test PARAMS ((tTestDesc *, char *));
static int
test_test (p_test, pz_test_file)
tTestDesc *p_test;
char* pz_test_file;
{
tSCC cmd_fmt[] =
"file=%s\n\
if ( test %s ) > /dev/null 2>&1\n\
then echo TRUE\n\
else echo FALSE\n\
fi";
char *pz_res;
int res;
static char cmd_buf[4096];
sprintf (cmd_buf, cmd_fmt, pz_test_file, p_test->pz_test_text);
pz_res = run_shell (cmd_buf);
switch (*pz_res) {
case 'T':
res = APPLY_FIX;
break;
case 'F':
res = SKIP_FIX;
break;
default:
fprintf (stderr, "Script yielded bogus result of `%s':\n%s\n\n",
pz_res, cmd_buf );
}
free ((void *) pz_res);
return res;
}
#else
/*
* IF we are in MS-DOS land, then whatever shell-type test is required
* will, by definition, fail
*/
#define test_test(t,tf) SKIP_FIX
#endif
/* * * * * * * * * * * * *
egrep_test make sure an egrep expression is found in the file text.
Input: a pointer to the descriptor of the test to run and
the pointer to the contents of the file under suspicion
Result: APPLY_FIX if the pattern is found, SKIP_FIX otherwise
The caller may choose to reverse meaning if the sense of the test
is inverted. */
static int egrep_test PARAMS ((char *, tTestDesc *));
static int
egrep_test (pz_data, p_test)
char *pz_data;
tTestDesc *p_test;
{
#ifdef DEBUG
if (p_test->p_test_regex == 0)
fprintf (stderr, "fixincl ERROR RE not compiled: `%s'\n",
p_test->pz_test_text);
#endif
if (regexec (p_test->p_test_regex, pz_data, 0, 0, 0) == 0)
return APPLY_FIX;
return SKIP_FIX;
}
/* * * * * * * * * * * * *
quoted_file_exists Make sure that a file exists before we emit
the file name. If we emit the name, our invoking shell will try
to copy a non-existing file into the destination directory. */
static int quoted_file_exists PARAMS ((const char *, const char *, const char *));
static int
quoted_file_exists (pz_src_path, pz_file_path, pz_file)
const char *pz_src_path;
const char *pz_file_path;
const char *pz_file;
{
char z[ MAXPATHLEN ];
char* pz;
sprintf (z, "%s/%s/", pz_src_path, pz_file_path);
pz = z + strlen ( z );
for (;;) {
char ch = *pz_file++;
if (! ISGRAPH( ch ))
return 0;
if (ch == '"')
break;
*pz++ = ch;
}
*pz = '\0';
{
struct stat s;
if (stat (z, &s) != 0)
return 0;
return S_ISREG( s.st_mode );
}
}
/* * * * * * * * * * * * *
*
extract_quoted_files
The syntax, `#include "file.h"' specifies that the compiler is to
search the local directory of the current file before the include
list. Consequently, if we have modified a header and stored it in
another directory, any files that are included by that modified
file in that fashion must also be copied into this new directory.
This routine finds those flavors of #include and for each one found
emits a triple of:
1. source directory of the original file
2. the relative path file name of the #includ-ed file
3. the full destination path for this file
Input: the text of the file, the file name and a pointer to the
match list where the match information was stored.
Result: internally nothing. The results are written to stdout
for interpretation by the invoking shell */
static void extract_quoted_files PARAMS ((char *, const char *, regmatch_t *));
static void
extract_quoted_files (pz_data, pz_fixed_file, p_re_match)
char *pz_data;
const char *pz_fixed_file;
regmatch_t *p_re_match;
{
char *pz_dir_end = strrchr (pz_fixed_file, '/');
char *pz_incl_quot = pz_data;
if (VLEVEL( VERB_APPLIES ))
fprintf (stderr, "Quoted includes in %s\n", pz_fixed_file);
/* Set "pz_fixed_file" to point to the containing subdirectory of the source
If there is none, then it is in our current directory, ".". */
if (pz_dir_end == (char *) NULL)
pz_fixed_file = ".";
else
*pz_dir_end = '\0';
for (;;)
{
pz_incl_quot += p_re_match->rm_so;
/* Skip forward to the included file name */
while (*pz_incl_quot != '"')
pz_incl_quot++;
if (quoted_file_exists (pz_src_dir, pz_fixed_file, pz_incl_quot))
{
/* Print the source directory and the subdirectory
of the file in question. */
printf ("%s %s/", pz_src_dir, pz_fixed_file);
pz_dir_end = pz_incl_quot;
/* Append to the directory the relative path of the desired file */
while (*pz_incl_quot != '"')
putc (*pz_incl_quot++, stdout);
/* Now print the destination directory appended with the
relative path of the desired file */
printf (" %s/%s/", pz_dest_dir, pz_fixed_file);
while (*pz_dir_end != '"')
putc (*pz_dir_end++, stdout);
/* End of entry */
putc ('\n', stdout);
}
/* Find the next entry */
if (regexec (&incl_quote_re, pz_incl_quot, 1, p_re_match, 0) != 0)
break;
}
}
/* * * * * * * * * * * * *
Somebody wrote a *_fix subroutine that we must call.
*/
#ifndef SEPARATE_FIX_PROC
static int internal_fix PARAMS ((int, tFixDesc *));
static int
internal_fix (read_fd, p_fixd)
int read_fd;
tFixDesc* p_fixd;
{
int fd[2];
if (pipe( fd ) != 0)
{
fprintf (stderr, "Error %d on pipe(2) call\n", errno );
exit (EXIT_FAILURE);
}
for (;;)
{
pid_t childid = fork();
switch (childid)
{
case -1:
break;
case 0:
close (fd[0]);
goto do_child_task;
default:
/*
* Parent process
*/
close (read_fd);
close (fd[1]);
return fd[0];
}
/*
* Parent in error
*/
fprintf (stderr, z_fork_err, errno, xstrerror (errno),
p_fixd->fix_name);
{
static int failCt = 0;
if ((errno != EAGAIN) || (++failCt > 10))
exit (EXIT_FAILURE);
sleep (1);
}
} do_child_task:;
/*
* Close our current stdin and stdout
*/
close (STDIN_FILENO);
close (STDOUT_FILENO);
UNLOAD_DATA();
/*
* Make the fd passed in the stdin, and the write end of
* the new pipe become the stdout.
*/
fcntl (fd[1], F_DUPFD, STDOUT_FILENO);
fcntl (read_fd, F_DUPFD, STDIN_FILENO);
apply_fix (p_fixd, pz_curr_file);
exit (0);
}
#endif /* !SEPARATE_FIX_PROC */
#ifdef SEPARATE_FIX_PROC
static void
fix_with_system (p_fixd, pz_fix_file, pz_file_source, pz_temp_file)
tFixDesc* p_fixd;
tCC* pz_fix_file;
tCC* pz_file_source;
tCC* pz_temp_file;
{
char* pz_cmd;
char* pz_scan;
size_t argsize;
if (p_fixd->fd_flags & FD_SUBROUTINE)
{
tSCC z_applyfix_prog[] = "/fixinc/applyfix";
argsize = 32
+ strlen( pz_orig_dir )
+ sizeof( z_applyfix_prog )
+ strlen( pz_fix_file )
+ strlen( pz_file_source )
+ strlen( pz_temp_file );
pz_cmd = (char*)xmalloc( argsize );
strcpy( pz_cmd, pz_orig_dir );
pz_scan = pz_cmd + strlen( pz_orig_dir );
strcpy( pz_scan, z_applyfix_prog );
pz_scan += sizeof( z_applyfix_prog ) - 1;
*(pz_scan++) = ' ';
/*
* Now add the fix number and file names that may be needed
*/
sprintf (pz_scan, "%ld %s %s %s", p_fixd - fixDescList,
pz_fix_file, pz_file_source, pz_temp_file);
}
else /* NOT an "internal" fix: */
{
size_t parg_size;
#ifdef __MSDOS__
/* Don't use the "src > dstX; rm -f dst; mv -f dstX dst" trick:
dst is a temporary file anyway, so we know there's no other
file by that name; and DOS's system(3) doesn't mind to
clobber existing file in redirection. Besides, with DOS 8+3
limited file namespace, we can easily lose if dst already has
an extension that is 3 or more characters long.
I do not think the 8+3 issue is relevant because all the files
we operate on are named "*.h", making 8+2 adequate. Anyway,
the following bizarre use of 'cat' only works on DOS boxes.
It causes the file to be dropped into a temporary file for
'cat' to read (pipes do not work on DOS). */
tSCC z_cmd_fmt[] = " %s | cat > %s";
#else
/* Don't use positional formatting arguments because some lame-o
implementations cannot cope :-(. */
tSCC z_cmd_fmt[] = " %s > %sX ; rm -f %s; mv -f %sX %s";
#endif
tCC** ppArgs = p_fixd->patch_args;
argsize = sizeof( z_cmd_fmt ) + strlen( pz_temp_file )
+ strlen( pz_file_source );
parg_size = argsize;
/*
* Compute the size of the command line. Add lotsa extra space
* because some of the args to sed use lotsa single quotes.
* (This requires three extra bytes per quote. Here we allow
* for up to 8 single quotes for each argument, including the
* command name "sed" itself. Nobody will *ever* need more. :)
*/
for (;;)
{
tCC* p_arg = *(ppArgs++);
if (p_arg == NULL)
break;
argsize += 24 + strlen( p_arg );
}
/* Estimated buffer size we will need. */
pz_scan = pz_cmd = (char*)xmalloc( argsize );
/* How much of it do we allot to the program name and its
arguments. */
parg_size = argsize - parg_size;
ppArgs = p_fixd->patch_args;
/*
* Copy the program name, unquoted
*/
{
tCC* pArg = *(ppArgs++);
for (;;)
{
char ch = *(pArg++);
if (ch == NUL)
break;
*(pz_scan++) = ch;
}
}
/*
* Copy the program arguments, quoted
*/
for (;;)
{
tCC* pArg = *(ppArgs++);
char* pz_scan_save;
if (pArg == NULL)
break;
*(pz_scan++) = ' ';
pz_scan = make_raw_shell_str( pz_scan_save = pz_scan, pArg,
parg_size - (pz_scan - pz_cmd) );
/*
* Make sure we don't overflow the buffer due to sloppy
* size estimation.
*/
while (pz_scan == (char*)NULL)
{
size_t already_filled = pz_scan_save - pz_cmd;
pz_cmd = (char*)xrealloc( pz_cmd, argsize += 100 );
pz_scan_save = pz_scan = pz_cmd + already_filled;
parg_size += 100;
pz_scan = make_raw_shell_str( pz_scan, pArg,
parg_size - (pz_scan - pz_cmd) );
}
}
/*
* add the file machinations.
*/
#ifdef __MSDOS__
sprintf (pz_scan, z_cmd_fmt, pz_file_source, pz_temp_file );
#else
sprintf (pz_scan, z_cmd_fmt, pz_file_source, pz_temp_file,
pz_temp_file, pz_temp_file, pz_temp_file);
#endif
}
system( pz_cmd );
free( (void*)pz_cmd );
}
/* * * * * * * * * * * * *
This loop should only cycle for 1/2 of one loop.
"chain_open" starts a process that uses "read_fd" as
its stdin and returns the new fd this process will use
for stdout. */
#else /* is *NOT* SEPARATE_FIX_PROC */
static int start_fixer PARAMS ((int, tFixDesc *, char *));
static int
start_fixer (read_fd, p_fixd, pz_fix_file)
int read_fd;
tFixDesc* p_fixd;
char* pz_fix_file;
{
tCC* pz_cmd_save;
char* pz_cmd;
if ((p_fixd->fd_flags & FD_SUBROUTINE) != 0)
return internal_fix (read_fd, p_fixd);
if ((p_fixd->fd_flags & FD_SHELL_SCRIPT) == 0)
pz_cmd = (char*)NULL;
else
{
tSCC z_cmd_fmt[] = "file='%s'\n%s";
pz_cmd = (char*) xmalloc (strlen (p_fixd->patch_args[2])
+ sizeof( z_cmd_fmt )
+ strlen( pz_fix_file ));
sprintf (pz_cmd, z_cmd_fmt, pz_fix_file, p_fixd->patch_args[2]);
pz_cmd_save = p_fixd->patch_args[2];
p_fixd->patch_args[2] = pz_cmd;
}
/* Start a fix process, handing off the previous read fd for its
stdin and getting a new fd that reads from the fix process' stdout.
We normally will not loop, but we will up to 10 times if we keep
getting "EAGAIN" errors.
*/
for (;;)
{
static int failCt = 0;
int fd;
fd = chain_open (read_fd,
(tCC **) p_fixd->patch_args,
(process_chain_head == -1)
? &process_chain_head : (pid_t *) NULL);
if (fd != -1)
{
read_fd = fd;
break;
}
fprintf (stderr, z_fork_err, errno, xstrerror (errno),
p_fixd->fix_name);
if ((errno != EAGAIN) || (++failCt > 10))
exit (EXIT_FAILURE);
sleep (1);
}
/* IF we allocated a shell script command,
THEN free it and restore the command format to the fix description */
if (pz_cmd != (char*)NULL)
{
free ((void*)pz_cmd);
p_fixd->patch_args[2] = pz_cmd_save;
}
return read_fd;
}
#endif
/* * * * * * * * * * * * *
Process the potential fixes for a particular include file.
Input: the original text of the file and the file's name
Result: none. A new file may or may not be created. */
static t_bool fix_applies PARAMS ((tFixDesc *));
static t_bool
fix_applies (p_fixd)
tFixDesc *p_fixd;
{
const char *pz_fname = pz_curr_file;
const char *pz_scan = p_fixd->file_list;
int test_ct;
tTestDesc *p_test;
# ifdef SEPARATE_FIX_PROC
/*
* There is only one fix that uses a shell script as of this writing.
* I hope to nuke it anyway, it does not apply to DOS and it would
* be painful to implement. Therefore, no "shell" fixes for DOS.
*/
if (p_fixd->fd_flags & (FD_SHELL_SCRIPT | FD_SKIP_TEST))
return BOOL_FALSE;
# else
if (p_fixd->fd_flags & FD_SKIP_TEST)
return BOOL_FALSE;
# endif
/* IF there is a file name restriction,
THEN ensure the current file name matches one in the pattern */
if (pz_scan != (char *) NULL)
{
size_t name_len;
while ((pz_fname[0] == '.') && (pz_fname[1] == '/'))
pz_fname += 2;
name_len = strlen (pz_fname);
for (;;)
{
pz_scan = strstr (pz_scan + 1, pz_fname);
/* IF we can't match the string at all,
THEN bail */
if (pz_scan == (char *) NULL)
return BOOL_FALSE;
/* IF the match is surrounded by the '|' markers,
THEN we found a full match -- time to run the tests */
if ((pz_scan[-1] == '|') && (pz_scan[name_len] == '|'))
break;
}
}
/* FOR each test, see if it fails.
IF it does fail, then we go on to the next test */
for (p_test = p_fixd->p_test_desc, test_ct = p_fixd->test_ct;
test_ct-- > 0;
p_test++)
{
switch (p_test->type)
{
case TT_TEST:
if (test_test (p_test, pz_curr_file) != APPLY_FIX) {
#ifdef DEBUG
if (VLEVEL( VERB_EVERYTHING ))
fprintf (stderr, z_failed, "TEST", p_fixd->fix_name,
pz_fname, p_fixd->test_ct - test_ct);
#endif
return BOOL_FALSE;
}
break;
case TT_EGREP:
if (egrep_test (pz_curr_data, p_test) != APPLY_FIX) {
#ifdef DEBUG
if (VLEVEL( VERB_EVERYTHING ))
fprintf (stderr, z_failed, "EGREP", p_fixd->fix_name,
pz_fname, p_fixd->test_ct - test_ct);
#endif
return BOOL_FALSE;
}
break;
case TT_NEGREP:
if (egrep_test (pz_curr_data, p_test) == APPLY_FIX) {
#ifdef DEBUG
if (VLEVEL( VERB_EVERYTHING ))
fprintf (stderr, z_failed, "NEGREP", p_fixd->fix_name,
pz_fname, p_fixd->test_ct - test_ct);
#endif
/* Negated sense */
return BOOL_FALSE;
}
break;
case TT_FUNCTION:
if (run_test (p_test->pz_test_text, pz_curr_file, pz_curr_data)
!= APPLY_FIX) {
#ifdef DEBUG
if (VLEVEL( VERB_EVERYTHING ))
fprintf (stderr, z_failed, "FTEST", p_fixd->fix_name,
pz_fname, p_fixd->test_ct - test_ct);
#endif
return BOOL_FALSE;
}
break;
}
}
return BOOL_TRUE;
}
/* * * * * * * * * * * * *
Write out a replacement file */
static void write_replacement PARAMS ((tFixDesc *));
static void
write_replacement (p_fixd)
tFixDesc *p_fixd;
{
const char* pz_text = p_fixd->patch_args[0];
if ((pz_text == (char*)NULL) || (*pz_text == NUL))
return;
{
FILE* out_fp = create_file ();
fputs (pz_text, out_fp);
fclose (out_fp);
}
}
/* * * * * * * * * * * * *
We have work to do. Read back in the output
of the filtering chain. Compare each byte as we read it with
the contents of the original file. As soon as we find any
difference, we will create the output file, write out all
the matched text and then copy any remaining data from the
output of the filter chain.
*/
static void test_for_changes PARAMS ((int));
static void
test_for_changes (read_fd)
int read_fd;
{
FILE *in_fp = fdopen (read_fd, "r");
FILE *out_fp = (FILE *) NULL;
char *pz_cmp = pz_curr_data;
#ifdef DO_STATS
fixed_ct++;
#endif
for (;;)
{
int ch;
ch = getc (in_fp);
if (ch == EOF)
break;
/* IF we are emitting the output
THEN emit this character, too.
*/
if (out_fp != (FILE *) NULL)
putc (ch, out_fp);
/* ELSE if this character does not match the original,
THEN now is the time to start the output.
*/
else if (ch != *pz_cmp)
{
out_fp = create_file ();
#ifdef DO_STATS
altered_ct++;
#endif
/* IF there are matched data, write the matched part now. */
if (pz_cmp != pz_curr_data)
fwrite (pz_curr_data, (size_t)(pz_cmp - pz_curr_data), 1, out_fp);
/* Emit the current unmatching character */
putc (ch, out_fp);
}
else
/* ELSE the character matches. Advance the compare ptr */
pz_cmp++;
}
/* IF we created the output file, ... */
if (out_fp != (FILE *) NULL)
{
regmatch_t match;
/* Close the file and see if we have to worry about
`#include "file.h"' constructs. */
fclose (out_fp);
if (regexec (&incl_quote_re, pz_curr_data, 1, &match, 0) == 0)
extract_quoted_files (pz_curr_data, pz_curr_file, &match);
}
fclose (in_fp);
close (read_fd); /* probably redundant, but I'm paranoid */
}
/* * * * * * * * * * * * *
Process the potential fixes for a particular include file.
Input: the original text of the file and the file's name
Result: none. A new file may or may not be created. */
void
process ()
{
tFixDesc *p_fixd = fixDescList;
int todo_ct = FIX_COUNT;
int read_fd = -1;
# ifndef SEPARATE_FIX_PROC
int num_children = 0;
# else /* is SEPARATE_FIX_PROC */
char* pz_file_source = pz_curr_file;
# endif
if (access (pz_curr_file, R_OK) != 0)
{
int erno = errno;
fprintf (stderr, "Cannot access %s from %s\n\terror %d (%s)\n",
pz_curr_file, getcwd ((char *) NULL, MAXPATHLEN),
erno, xstrerror (erno));
return;
}
pz_curr_data = load_file (pz_curr_file);
if (pz_curr_data == (char *) NULL)
return;
#ifdef DO_STATS
process_ct++;
#endif
if (VLEVEL( VERB_PROGRESS ) && have_tty)
fprintf (stderr, "%6d %-50s \r", data_map_size, pz_curr_file );
# ifndef SEPARATE_FIX_PROC
process_chain_head = NOPROCESS;
/* For every fix in our fix list, ... */
for (; todo_ct > 0; p_fixd++, todo_ct--)
{
if (! fix_applies (p_fixd))
continue;
if (VLEVEL( VERB_APPLIES ))
fprintf (stderr, "Applying %-24s to %s\n",
p_fixd->fix_name, pz_curr_file);
if (p_fixd->fd_flags & FD_REPLACEMENT)
{
write_replacement (p_fixd);
UNLOAD_DATA();
return;
}
/* IF we do not have a read pointer,
THEN this is the first fix for the current file.
Open the source file. That will be used as stdin for
the first fix. Any subsequent fixes will use the
stdout descriptor of the previous fix for its stdin. */
if (read_fd == -1)
{
read_fd = open (pz_curr_file, O_RDONLY);
if (read_fd < 0)
{
fprintf (stderr, "Error %d (%s) opening %s\n", errno,
xstrerror (errno), pz_curr_file);
exit (EXIT_FAILURE);
}
/* Ensure we do not get duplicate output */
fflush (stdout);
}
read_fd = start_fixer (read_fd, p_fixd, pz_curr_file);
num_children++;
}
/* IF we have a read-back file descriptor,
THEN check for changes and write output if changed. */
if (read_fd >= 0)
{
test_for_changes (read_fd);
#ifdef DO_STATS
apply_ct += num_children;
#endif
/* Wait for child processes created by chain_open()
to avoid leaving zombies. */
do {
wait ((int *) NULL);
} while (--num_children > 0);
}
# else /* is SEPARATE_FIX_PROC */
for (; todo_ct > 0; p_fixd++, todo_ct--)
{
if (! fix_applies (p_fixd))
continue;
if (VLEVEL( VERB_APPLIES ))
fprintf (stderr, "Applying %-24s to %s\n",
p_fixd->fix_name, pz_curr_file);
if (p_fixd->fd_flags & FD_REPLACEMENT)
{
write_replacement (p_fixd);
UNLOAD_DATA();
return;
}
fix_with_system (p_fixd, pz_curr_file, pz_file_source, pz_temp_file);
pz_file_source = pz_temp_file;
}
read_fd = open (pz_temp_file, O_RDONLY);
if (read_fd < 0)
{
fprintf (stderr, "error %d (%s) opening output (%s) for read\n",
errno, xstrerror (errno), pz_temp_file);
}
else
{
test_for_changes (read_fd);
/* Unlinking a file while it is still open is a Bad Idea on
DOS/Windows. */
close (read_fd);
unlink (pz_temp_file);
}
# endif
UNLOAD_DATA();
}
|