aboutsummaryrefslogtreecommitdiffstats
path: root/ioext.c
blob: 62efc2bd8e08b09c4a4122f46db883c6e00e52e4 (plain)
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
/* Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1997 Free Software Foundation, Inc.
 *
 * This program 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.
 *
 * This program 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 this software; see the file COPYING.  If not, write to
 * the Free Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111, USA.
 *
 * As a special exception, the Free Software Foundation gives permission
 * for additional uses of the text contained in its release of SCM.
 *
 * The exception is that, if you link the SCM library with other files
 * to produce an executable, this does not by itself cause the
 * resulting executable to be covered by the GNU General Public License.
 * Your use of that executable is in no way restricted on account of
 * linking the SCM library code into it.
 *
 * This exception does not however invalidate any other reasons why
 * the executable file might be covered by the GNU General Public License.
 *
 * This exception applies only to the code released by the
 * Free Software Foundation under the name SCM.  If you copy
 * code from other Free Software Foundation releases into a copy of
 * SCM, as the General Public License permits, the exception does
 * not apply to the code that you add in this way.  To avoid misleading
 * anyone as to the status of such modified files, you must delete
 * this exception notice from them.
 *
 * If you write modifications of your own for SCM, it is your choice
 * whether to permit this exception to apply to your modifications.
 * If you do not wish that, delete this exception notice.
 */

/* "ioext.c" code for system calls in common between PC compilers and unix.
   Author: Aubrey Jaffer */

#include "scm.h"

#ifdef __EMX__
# include <sys/types.h>
#endif

#ifndef macintosh
# ifdef vms
#  include <stat.h>
# else
#  include <sys/stat.h>
# endif

# ifdef __TURBOC__
#  include <io.h>
# endif
SCM	stat2scm P((struct stat *stat_temp));
/* int	mkdir P((const char *path, mode_t mode)); */
#endif
#ifdef hpux
# include <unistd.h>
#endif
#ifdef __sgi__
# include <unistd.h>
#endif
#ifdef __FreeBSD__
# include <unistd.h>
#endif
#ifdef __NetBSD__
# include <unistd.h>
#endif
#ifdef __OpenBSD__
# include <unistd.h>
#endif
/* added by Denys Duchier */
#ifdef __SVR4
# include <sys/types.h>
# include <unistd.h>
#endif
#ifdef linux
# include <unistd.h>
#endif
#ifdef GO32
# include <unistd.h>
#endif
#ifdef __osf__
# include <unistd.h>
#endif
#ifdef __MACH__
# include <unistd.h>
#endif
#ifdef __CYGWIN__
# include <unistd.h>
#endif

#ifndef STDC_HEADERS
	int chdir P((const char *path));
	int unlink P((const char *name));
	int link P((const char *from, const char *to));
	char *getcwd P((char *buf, sizet size));
	int access P((const char *name, int type));
	int dup P((int fd));
	int dup2 P((int fd, int fd2));
	int close P((int fd));
	int rmdir P((const char *path));
	int execv P((const char *, char *const *));
	int execvp P((const char *, char *const *));
	int putenv P((const char *));
#else
# ifdef _WIN32
#  include <direct.h>
#  include <io.h>
#  include <process.h>
# endif
# ifdef __HIGHC__
#  include <direct.h>
#  include <dirent.h>
#  include <process.h>
#  define mkdir(foo,bar) mkdir(foo)
# endif
#endif /* STDC_HEADERS */

#ifdef __EMX__
	int execv P((const char *, char *const *));
	int execvp P((const char *, char *const *));
	int putenv P((const char *));
#endif

static char s_read_line[] = "read-line";
SCM read_line(port)
     SCM port;
{
  register int c;
  register int j = 0;
  sizet len = 30;
  SCM tok_buf = makstr((long) len);
  register char *p = CHARS(tok_buf);
  if (UNBNDP(port)) port = cur_inp;
  else ASRTER(NIMP(port) && OPINPORTP(port), port, ARG1, s_read_line);
  if (EOF==(c = lgetc(port))) return EOF_VAL;
  while(1) {
    switch (c) {
    case LINE_INCREMENTORS:
    case EOF:
      if (j>0 && '\r'==p[j-1]) j--;
      if (len==j) return tok_buf;
      return resizuve(tok_buf, (SCM)MAKINUM(j));
    default:
      if (j >= len) {
	p = grow_tok_buf(tok_buf);
	len = LENGTH(tok_buf);
      }
      p[j++] = c;
      c = lgetc(port);
    }
  }
}
static char s_read_line1[] = "read-line!";
SCM read_line1(str, port)
     SCM str, port;
{
  register int c;
  register int j = 0;
  register char *p;
  sizet len;
  ASRTER(NIMP(str) && STRINGP(str), str, ARG1, s_read_line1);
  p = CHARS(str);
  len = LENGTH(str);
  if (UNBNDP(port)) port = cur_inp;
  else ASRTER(NIMP(port) && OPINPORTP(port), port, ARG2, s_read_line1);
  c = lgetc(port);
  if (EOF==c) return EOF_VAL;
  while(1) {
    switch (c) {
    case LINE_INCREMENTORS:
    case EOF:
      return MAKINUM(j);
    default:
      if (j >= len) {
	lungetc(c, port);
	return BOOL_F;
      }
      p[j++] = c;
      c = lgetc(port);
    }
  }
}
static char s_write_line[] = "write-line";
SCM l_write_line(obj, port)
     SCM obj, port;
{
  display(obj, port);
  return newline(port);
}

static char	s_file_position[] = "file-position",
		s_file_set_pos[] = "file-set-position";
SCM file_position(port)
     SCM port;
{
	long ans;
	ASRTER(NIMP(port) && OPFPORTP(port), port, ARG1, s_file_position);
	SYSCALL(ans = ftell(STREAM(port)););
	if (CRDYP(port)) ans--;
	return MAKINUM(ans);
      }
SCM file_set_position(port, pos)
     SCM port, pos;
{
	SCM ans;
	ASRTER(NIMP(port) && OPFPORTP(port), port, ARG1, s_file_set_pos);
#ifndef RECKLESS
	if (TRACKED & SCM_PORTFLAGS(port)) {
	  if (INUM0==pos) {
	    int i = SCM_PORTNUM(port);
	    scm_port_table[i].line = 1L;
	    scm_port_table[i].col = 1;
	  }
	  else {
	    if (2 <= verbose)
	      scm_warn("Setting file position for tracked port: ", "", port);
	    SCM_PORTFLAGS(port) &= (~TRACKED);
	  }
	}
#endif
	CLRDY(port);		/* Clear ungetted char */
	SYSCALL(ans = (fseek(STREAM(port), INUM(pos), 0)) ? BOOL_F : BOOL_T;);
#ifdef HAVE_PIPE
# ifdef ESPIPE
	if (!OPIOPORTP(port))
	  ASRTER(ESPIPE != errno, port, ARG1, s_file_set_pos);
# endif
#endif
	return ans;
}

static char s_reopen_file[] = "reopen-file";
SCM reopen_file(filename, modes, port)
     SCM filename, modes, port;
{
  FILE *f;
  char cmodes[4];
  long flags;
  ASRTER(NIMP(filename) && STRINGP(filename), filename, ARG1, s_reopen_file);
  ASRTER(NIMP(modes) && (STRINGP(modes) || SYMBOLP(modes)), modes, ARG2, s_reopen_file);
  flags =  mode_bits(CHARS(modes), cmodes);
  ASRTER(flags, modes, ARG2, s_reopen_file);
  DEFER_INTS;
  ASRTER(NIMP(port) && FPORTP(port) && OPENP(port), port, ARG3, s_reopen_file);
  SCM_OPENCALL(f = freopen(CHARS(filename), cmodes, STREAM(port)));
  if (!f) {
    ALLOW_INTS;
    return BOOL_F;
  }
  else {
    SCM_PORTFLAGS(port) = flags;
    SCM_SETFLAGS(port, flags);
    if (BUF0 & flags)
      i_setbuf0(port);
    SCM_PORTDATA(port) = filename;
  }
  ALLOW_INTS;
  return port;
}

#ifndef MCH_AMIGA
# ifndef macintosh
static char s_dup[]="duplicate-port";
SCM l_dup(oldpt, modes)
     SCM oldpt, modes;
{
  long flags;
  char cmodes[4];
  int tfd;
  FILE *f;
  SCM newpt;
  ASRTER(NIMP(oldpt) && OPFPORTP(oldpt), oldpt, ARG1, s_dup);
  ASRTER(NIMP(modes) && (STRINGP(modes) || SYMBOLP(modes)), modes, ARG2, s_dup);
  flags = mode_bits(CHARS(modes), cmodes);
  ASRTER(flags, modes, ARG2, s_dup);
  NEWCELL(newpt);
  DEFER_INTS;
  SCM_OPENCALL(tfd = dup(fileno(STREAM(oldpt))));
  if (-1==tfd) {ALLOW_INTS;return BOOL_F;};
  SYSCALL(f = fdopen(tfd, cmodes););
  if (!f) {
    int lerrno = errno;
    close(tfd);
    errno = lerrno;
#  ifdef EINVAL
    if (lerrno==EINVAL) wta(modes, (char *)ARG2, s_dup);
#  endif
    wta(MAKINUM(tfd), (char *)NALLOC, s_port_type);
  }
  newpt = scm_port_entry(f, tc16_fport, flags);
  SCM_PORTDATA(newpt) = SCM_PORTDATA(oldpt);
  if (BUF0 & flags)
    i_setbuf0(newpt);
  ALLOW_INTS;
  return newpt;
}
static char s_dup2[]="redirect-port!";
SCM l_dup2(into_pt, from_pt)
     SCM into_pt, from_pt;
{
  int ans, oldfd, newfd;
  DEFER_INTS;
  ASRTER(NIMP(into_pt) && OPFPORTP(into_pt), into_pt, ARG1, s_dup2);
  ASRTER(NIMP(from_pt) && OPFPORTP(from_pt), from_pt, ARG1, s_dup2);
  oldfd = fileno(STREAM(into_pt));
  newfd = fileno(STREAM(from_pt));
  SCM_OPENCALL(ans = dup2(oldfd, newfd));
  if (-1==ans) {ALLOW_INTS;return BOOL_F;};
  ALLOW_INTS;
  return into_pt;
}
# endif

# ifndef vms
static char s_opendir[]="opendir";
static char s_readdir[]="readdir";
static char s_rewinddir[]="rewinddir";
static char s_closedir[]="closedir";
#  ifndef _WIN32
#   include <dirent.h>
SCM l_opendir(dirname)
     SCM dirname;
{
  DIR *ds;
  SCM dir;
  ASRTER(NIMP(dirname) && STRINGP(dirname), dirname, ARG1, s_opendir);
  NEWCELL(dir);
  DEFER_INTS;
  SCM_OPENCALL(ds = opendir(CHARS(dirname)));
  if (!ds) {ALLOW_INTS; return BOOL_F;}
  CAR(dir) = tc16_dir | OPN;
  SETCDR(dir, ds);
  ALLOW_INTS;
  return dir;
}

SCM l_readdir(port)
     SCM port;
{
  struct dirent *rdent;
  DEFER_INTS;
  ASRTER(OPDIRP(port), port, ARG1, s_readdir);
  SYSCALL(rdent = readdir((DIR *)CDR(port)););
  if (!rdent) {ALLOW_INTS; return BOOL_F;}
  ALLOW_INTS;
  /* rdent could be overwritten by another readdir to the same handle */
  return makfrom0str((char *)rdent->d_name);
}

SCM l_rewinddir(port)
     SCM port;
{
  ASRTER(OPDIRP(port), port, ARG1, s_rewinddir);
  rewinddir((DIR *)CDR(port));
  return UNSPECIFIED;
}

SCM l_closedir(port)
     SCM port;
{
  int sts;
  ASRTER(DIRP(port), port, ARG1, s_closedir);
  DEFER_INTS;
  if (CLOSEDP(port)) {ALLOW_INTS;return BOOL_F;}
  SYSCALL(sts = closedir((DIR *)CDR(port)););
  if (sts) {ALLOW_INTS; return BOOL_F;}
  CAR(port) = tc16_dir;
  ALLOW_INTS;
  return BOOL_T;
}

int dir_print(sexp, port, writing)
     SCM sexp; SCM port; int writing;
{
  prinport(sexp, port, "directory");
  return !0;
}
sizet dir_free(p)
     CELLPTR p;
{
  if (OPENP((SCM)p)) closedir((DIR *)CDR((SCM)p));
  return 0;
}
#   define dir_mark mark0
#  else /* _WIN32 */
struct WDIR {
  long handle;                  //-1 if at end of list.
  struct _finddata_t info;
  SCM fspec;                  //for rewind, needs gc protection.
};

SCM l_opendir(dirname)
     SCM dirname;
{
  long handle;
  SCM fspec, dir;
  struct _finddata_t info;
  struct WDIR *wdir;
  int dlen;
  ASRTER(NIMP(dirname) && STRINGP(dirname), dirname, ARG1, s_opendir);
  dlen = LENGTH(dirname);
  fspec = makstr(dlen + 2);
  strcpy(CHARS(fspec), CHARS(dirname));
  if ('/' != CHARS(fspec)[dlen - 1] && '\\' != CHARS(fspec)[dlen - 1])
    CHARS(fspec)[dlen++] = '/';
  CHARS(fspec)[dlen++] = '*';
  CHARS(fspec)[dlen] = 0;
  DEFER_INTS;
  dir = must_malloc_cell(sizeof(struct WDIR)+0L, tc16_dir, s_opendir);
  wdir = (struct WDIR*)CHARS(dir);
  wdir->fspec = fspec;
  SCM_OPENCALL(handle = _findfirst(CHARS(fspec), &(wdir->info)));
  if (-1 == handle) {ALLOW_INTS; return BOOL_F;}
  wdir->handle = handle;
  CAR(dir) |= OPN;
  ALLOW_INTS;
  return dir;
}

SCM l_readdir(port)
     SCM port;
{
  SCM fname;
  struct WDIR *wdir;
  int ret;
  ASRTER(OPDIRP(port), port, ARG1, s_readdir);
  wdir = (struct WDIR*)CHARS(port);
  if (-1 == wdir->handle) return BOOL_F;
  fname = makfrom0str(wdir->info.name);
  DEFER_INTS;
  SYSCALL(ret = _findnext(wdir->handle, &(wdir->info)););
  if (0 != ret) {
    SYSCALL(_findclose(wdir->handle););
    wdir->handle = -1;
  }
  ALLOW_INTS;
  return fname;
}

SCM l_rewinddir(port)
     SCM port;
{
  struct WDIR *wdir;
  ASRTER(OPDIRP(port), port, ARG1, s_rewinddir);
  wdir = (struct WDIR*)CHARS(port);
  DEFER_INTS;
  if (-1 != wdir->handle)
    SYSCALL(_findclose(wdir->handle););
  SYSCALL(wdir->handle = _findfirst(CHARS(wdir->fspec), &(wdir->info)););
  ALLOW_INTS;
  return UNSPECIFIED;
}

SCM l_closedir(port)
     SCM port;
{
  struct WDIR *wdir;
  ASRTER(DIRP(port), port, ARG1, s_closedir);
  wdir = (struct WDIR*)CHARS(port);
  DEFER_INTS;
  if (CLOSEDP(port)) {ALLOW_INTS;return BOOL_F;}
  if (-1 != wdir->handle) {
    SYSCALL(_findclose(wdir->handle););
    wdir->handle = -1;
  }
  CAR(port) = tc16_dir;
  wdir->fspec = UNSPECIFIED;
  ALLOW_INTS;
  return BOOL_T;
}

int dir_print(sexp, port, writing)
     SCM sexp; SCM port; int writing;
{
  prinport(sexp, port, "directory");
  return !0;
}
sizet dir_free(p)
     CELLPTR p;
{
  struct WDIR *wdir = (struct WDIR*)CHARS((SCM)p);
  if (-1 != wdir->handle)
    _findclose(wdir->handle);
  must_free(CHARS((SCM)p), (sizet)sizeof(struct WDIR));
  return 0;
}
SCM dir_mark(ptr)
     SCM ptr;
{
  return ((struct WDIR*)CHARS(ptr))->fspec;
}
#  endif /* _WIN32 */
long tc16_dir;
static smobfuns dir_smob = {dir_mark, dir_free, dir_print, 0};
# endif /* vms */

static char s_mkdir[] = "mkdir";
SCM l_mkdir(path, mode)
     SCM path, mode;
{
  int val;
  ASRTER(NIMP(path) && STRINGP(path), path, ARG1, s_mkdir);
  ASRTER(INUMP(mode), mode, ARG2, s_mkdir);
# ifdef _WIN32
  SYSCALL(val = mkdir(CHARS(path)););
# else
  SYSCALL(val = mkdir(CHARS(path), INUM(mode)););
				/* (mode_t)INUM(mode) might be needed */
# endif
  return val ? BOOL_F : BOOL_T;
}
# ifdef vms
static char s_dot_dir[] = ".DIR";
# endif
static char s_rmdir[] = "rmdir";
SCM l_rmdir(path)
     SCM path;
{
  int val;
  ASRTER(NIMP(path) && STRINGP(path), path, ARG1, s_rmdir);
# ifdef vms
  return del_fil(st_append(cons2(path, s_dot_dir, EOL)));
# else
  SYSCALL(val = rmdir(CHARS(path)););
  return val ? BOOL_F : BOOL_T;
# endif
}
#endif /* MCH_AMIGA */

#ifndef THINK_C
static char s_chdir[] = "chdir";
SCM lchdir(str)
     SCM str;
{
  int ans;
  ASRTER(NIMP(str) && STRINGP(str), str, ARG1, s_chdir);
  SYSCALL(ans = chdir(CHARS(str)););
  return ans ? BOOL_F : BOOL_T;
}
# ifndef MCH_AMIGA
#  ifdef __TURBOC__
#   include <dir.h>
#  endif
SCM l_getcwd()
{
  char *ans;
#  ifndef vms
  char wd[256];
  SYSCALL(ans = getcwd(wd, 256););
  return ans ? makfrom0str(wd) : BOOL_F;
#  else
  SYSCALL(ans = getenv("PATH"););
  return ans ? makfrom0str(ans) : BOOL_F;
#  endif
}

#  ifndef __MWERKS__
static char s_chmod[] = "chmod";
SCM l_chmod(pathname, mode)
     SCM pathname, mode;
{
  int val;
  ASRTER(NIMP(pathname) && STRINGP(pathname), pathname, ARG1, s_chmod);
  ASRTER(INUMP(mode), mode, ARG2, s_chmod);
  SYSCALL(val = chmod(CHARS(pathname), INUM(mode)););
  return val ? BOOL_F : BOOL_T;
}
#  endif

#  ifndef vms
#   ifdef __EMX__
#    include <sys/utime.h>
#   else
#    ifdef _WIN32
#     include <sys/utime.h>
#    else
#     include <utime.h>
#    endif
#   endif
static char s_utime[] = "utime";
SCM l_utime(pathname, acctime, modtime)
     SCM pathname, acctime, modtime;
{
  int val;
  struct utimbuf utm_tmp;
  utm_tmp.actime = num2ulong(acctime, (char *)ARG2, s_utime);
  utm_tmp.modtime = num2ulong(modtime, (char *)ARG3, s_utime);
  ASRTER(NIMP(pathname) && STRINGP(pathname), pathname, ARG1, s_utime);
  SYSCALL(val = utime(CHARS(pathname), &utm_tmp););
  return val ? BOOL_F : BOOL_T;
}
#  endif /* vms */

#  ifndef __MWERKS__
static char s_umask[] = "umask";
SCM l_umask(mode)
     SCM mode;
{
  ASRTER(INUMP(mode), mode, ARG1, s_umask);
  return MAKINUM(umask(INUM(mode)));
}
#  endif
# endif /* MCH_AMIGA */
#endif /* THINK_C */

static char s_ren_fil[] = "rename-file";
SCM ren_fil(oldname, newname)
     SCM oldname, newname;
{
  SCM ans;
  ASRTER(NIMP(oldname) && STRINGP(oldname), oldname, ARG1, s_ren_fil);
  ASRTER(NIMP(newname) && STRINGP(newname), newname, ARG2, s_ren_fil);
#if 1 /* def STDC_HEADERS */
  SYSCALL(ans = (rename(CHARS(oldname), CHARS(newname))) ? BOOL_F: BOOL_T;);
  return ans;
#else
  DEFER_INTS;
  SYSCALL(ans = link(CHARS(oldname), CHARS(newname)) ? BOOL_F : BOOL_T;);
  if (!FALSEP(ans)) {
    SYSCALL(ans = unlink(CHARS(oldname)) ? BOOL_F : BOOL_T;);
    if (FALSEP(ans))
      SYSCALL(unlink(CHARS(newname));); /* unlink failed.  remove new name */
  }
  ALLOW_INTS;
  return ans;
#endif
}
static char s_fileno[] = "fileno";
SCM l_fileno(port)
     SCM port;
{
  ASRTER(NIMP(port) && OPPORTP(port), port, ARG1, s_fileno);
  if (tc16_fport != TYP16(port)) return BOOL_F;
  return MAKINUM(fileno(STREAM(port)));
}
#ifndef THINK_C
# ifndef __MWERKS__
#  ifndef F_OK
#   define F_OK 00
#   define X_OK 01
#   define W_OK 02
#   define R_OK 04
#  endif
static char s_access[] = "access";
SCM l_access(pathname, mode)
     SCM pathname, mode;
{
  int val;
  int imodes;
  ASRTER(NIMP(pathname) && STRINGP(pathname), pathname, ARG1, s_access);
  if (INUMP(mode)) imodes = INUM(mode);
  else {
    ASRTER(NIMP(mode) && STRINGP(mode), mode, ARG2, s_access);
    imodes = F_OK | (strchr(CHARS(mode), 'r') ? R_OK : 0)
      | (strchr(CHARS(mode), 'w') ? W_OK : 0)
	| (strchr(CHARS(mode), 'x') ? X_OK : 0);
  }
  SYSCALL(val = access(CHARS(pathname), imodes););
  return val ? BOOL_F : BOOL_T;
}
# endif /* __MWERKS__ */

SCM stat2scm P((struct stat *stat_temp));

char s_stat[] = "stat";
SCM l_stat(str)
  SCM str;
{
  int i;
  struct stat stat_temp;
  if (IMP(str))
  badarg1: wta(str, (char *)ARG1, s_stat);
  if (STRINGP(str)) {SYSCALL(i = stat(CHARS(str), &stat_temp););}
  else {
# ifndef MCH_AMIGA
    if (!OPFPORTP(str)) goto badarg1;
    SYSCALL(i = fstat(fileno(STREAM(str)), &stat_temp););
# else
    goto badarg1;
# endif
  }
  if (i) return BOOL_F;
  return stat2scm(&stat_temp);
}
# ifdef MCH_AMIGA
SCM stat2scm(stat_temp)
     struct stat *stat_temp;
{
  SCM ans = make_vector(MAKINUM(3), UNSPECIFIED);
  SCM *ve = VELTS(ans);
  ve[ 0] = ulong2num((unsigned long)stat_temp->st_attr);
  ve[ 1] = ulong2num((unsigned long)stat_temp->st_mtime);
  ve[ 2] = ulong2num((unsigned long)stat_temp->st_size);
  return ans;
}
# else
SCM stat2scm(stat_temp)
     struct stat *stat_temp;
{
  SCM ans = make_vector(MAKINUM(11), UNSPECIFIED);
  SCM *ve = VELTS(ans);
  ve[ 0] = ulong2num((unsigned long)stat_temp->st_dev);
  ve[ 1] = ulong2num((unsigned long)stat_temp->st_ino);
  ve[ 2] = ulong2num((unsigned long)stat_temp->st_mode);
  ve[ 3] = ulong2num((unsigned long)stat_temp->st_nlink);
  ve[ 4] = ulong2num((unsigned long)stat_temp->st_uid);
  ve[ 5] = ulong2num((unsigned long)stat_temp->st_gid);
  ve[ 6] = ulong2num((unsigned long)stat_temp->st_rdev);
  ve[ 7] = ulong2num((unsigned long)stat_temp->st_size);
  ve[ 8] = ulong2num((unsigned long)stat_temp->st_atime);
  ve[ 9] = ulong2num((unsigned long)stat_temp->st_mtime);
  ve[10] = ulong2num((unsigned long)stat_temp->st_ctime);
  return ans;
}
#  ifdef __TURBOC__
#   include <process.h>
#  endif
SCM l_getpid()
{
  return MAKINUM((unsigned long)getpid());
}
# endif /* MCH_AMIGA */
#endif /* THINK_C */

#ifndef __IBMC__
# ifndef macintosh
#  ifndef __WATCOMC__
#   ifndef _Windows
#    ifdef __TURBOC__
#     include <process.h>
#    endif
char s_execv[] = "execv";
char s_execvp[] = "execvp";
SCM i_execv(modes, path, args)
     char * modes;
     SCM path, args;
{
  char **execargv;
  int i = ilength(args);
  ASRTER(i>0, args, WNA, s_execv);
  ASRTER(NIMP(path) && STRINGP(path), path, ARG1, s_execv);
  /*  dowinds(EOL); */
  args = cons(path, args);
  DEFER_INTS;
  execargv = makargvfrmstrs(args, s_execv);
  ignore_signals();
  (strchr(modes, 'p') ? execvp : execv)(execargv[0], &execargv[1]);
  unignore_signals();
  ALLOW_INTS;
  perror(execargv[0]);
  return MAKINUM(errno);
}
SCM lexec(path, arg0, args)
     SCM path, arg0, args;
{
  return i_execv("", path, cons(arg0, args));
}
SCM lexecp(path, arg0, args)
     SCM path, arg0, args;
{
  return i_execv("p", path, cons(arg0, args));
}
SCM lexecv(path, args)
     SCM path, args;
{
  return i_execv("", path, args);
}
SCM lexecvp(path, args)
     SCM path, args;
{
  return i_execv("p", path, args);
}
static char s_putenv[] = "putenv";
SCM l_putenv(str)
     SCM str;
{
  ASRTER(NIMP(str) && STRINGP(str), str, ARG1, s_putenv);
  return putenv(CHARS(str)) ? BOOL_F : BOOL_T;
}
#   endif
#  endif
# endif
#endif

static iproc subr1s[] = {
	{s_file_position, file_position},
	{s_fileno, l_fileno},
#ifndef MCH_AMIGA
# ifndef vms
	{s_opendir, l_opendir},
	{s_readdir, l_readdir},
	{s_rewinddir, l_rewinddir},
	{s_closedir, l_closedir},
# endif
	{s_rmdir, l_rmdir},
#endif
#ifndef THINK_C
# ifndef MCH_AMIGA
#  ifndef __MWERKS__
	{s_umask, l_umask},
#  endif
# endif
	{s_stat, l_stat},
	{s_chdir, lchdir},
#endif
	{0, 0}};

static iproc subr1os[] = {
	{s_read_line, read_line},
	{0, 0}};

static iproc subr2s[] = {
	{s_ren_fil, ren_fil},
#ifndef macintosh
	{s_access, l_access},
#endif
#ifndef MCH_AMIGA
	{s_mkdir, l_mkdir},
# ifndef macintosh
	{s_dup, l_dup},
	{s_dup2, l_dup2},
	{s_chmod, l_chmod},
# endif
#endif
	{0, 0}};

#include <fcntl.h>		/* for O_RDONLY, O_RDWR, O_EXCL */
#ifdef O_EXCL
SCM scm_try_create_file(fname, modes, perms)
     SCM fname, modes, perms;
{
  SCM port;
  FILE *f;
  char cmodes[4];
  long flags;
  int fd, fdflags = O_CREAT | O_EXCL;
# ifdef S_IROTH
  mode_t cperms = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
# else
  int cperms = 0666;
# endif
  ASRTER(NIMP(fname) && STRINGP(fname), fname, ARG1, s_try_create_file);
  ASRTER(NIMP(modes) && (STRINGP(modes) || SYMBOLP(modes)), modes, ARG2, s_try_create_file);
  if (NNULLP(perms)) {
    perms = CAR(perms);
    ASRTER(INUMP(perms), perms, ARG3, s_try_create_file);
# ifdef S_IROTH
    cperms = (mode_t)INUM(perms);
# else
    cperms = INUM(perms);
# endif
  }
  flags = mode_bits(CHARS(modes), cmodes);
  ASRTER(flags, modes, ARG2, s_try_create_file);
  fdflags |= (RDNG & flags) ? O_RDWR : O_WRONLY;
  DEFER_INTS;
  SCM_OPENCALL(fd = open(CHARS(fname), fdflags, cperms));
  if (fd >= 0 && (f = fdopen(fd, cmodes))) {
    port = scm_port_entry(f, tc16_fport, flags);
    if (BUF0 & flags) i_setbuf0(port);
    SCM_PORTDATA(port) = fname;
  }
  else
    port = BOOL_F;
  ALLOW_INTS;
  return port;
}
#endif

static iproc subr2os[] = {
	{s_file_set_pos, file_set_position},
	{s_read_line1, read_line1},
	{s_write_line, l_write_line},
	{0, 0}};

SCM_DLL_EXPORT void init_ioext P((void));

void init_ioext()
{
	init_iprocs(subr1os, tc7_subr_1o);
	init_iprocs(subr1s, tc7_subr_1);
	init_iprocs(subr2os, tc7_subr_2o);
	init_iprocs(subr2s, tc7_subr_2);
#ifdef O_EXCL
	make_subr(s_try_create_file, tc7_lsubr_2, scm_try_create_file);
#endif
	make_subr(s_reopen_file, tc7_subr_3, reopen_file);
#ifndef THINK_C
# ifndef MCH_AMIGA
#  ifndef __MWERKS__
	make_subr("getpid", tc7_subr_0, l_getpid);
#  endif
	make_subr("getcwd", tc7_subr_0, l_getcwd);
#  ifndef vms
#   ifndef _WIN32
	make_subr(s_utime, tc7_subr_3, l_utime);
#   endif
	tc16_dir = newsmob(&dir_smob);
#  endif
# endif
#endif
#ifndef __IBMC__
# ifndef macintosh
#  ifndef __WATCOMC__
#   ifndef _Windows
	make_subr(s_execv, tc7_subr_2, lexecv);
	make_subr(s_execvp, tc7_subr_2, lexecvp);
	make_subr("execl", tc7_lsubr_2, lexec);
	make_subr("execlp", tc7_lsubr_2, lexecp);
	make_subr(s_putenv, tc7_subr_1, l_putenv);
#   endif
#  endif
# endif
#endif
	add_feature("i/o-extensions");
	add_feature("line-i/o");
	scm_ldstr("\n\
(define (file-exists? path) (access path \"r\"))\n\
(define (make-directory path)\n\
  (define umsk (umask 18))\n\
  (umask umsk)\n\
  (mkdir path (logxor #o777 umsk)))\n\
(define current-directory getcwd)\n\
(define (directory-for-each proc dirname . args)\n\
  (define dir (opendir (if (symbol? dirname)\n\
			   (symbol->string dirname)\n\
			   dirname)))\n\
  (if dir\n\
      (let ((selector\n\
	     (cond ((null? args) identity)\n\
		   ((> (length args) 1)\n\
		    (slib:error 'directory-for-each\n\
				'too-many-arguments\n\
				(cdr args)))\n\
		   ((procedure? (car args)) (car args))\n\
		   ((string? (car args))\n\
		    (require 'glob)\n\
		    (filename:match?? (car args)))\n\
		   (else (slib:error 'directory-for-each\n\
				     'unknown-selector-type\n\
				     (car args))))))\n\
	(do ((filename (readdir dir) (readdir dir)))\n\
	    ((not filename) (closedir dir))\n\
	  (and (selector filename) (proc filename))))))\n\
(define (system->line command . tmp)\n\
  (require 'filename)\n\
  (cond ((null? tmp)\n\
         (call-with-tmpnam\n\
          (lambda (tmp) (system->line command tmp))))\n\
        (else\n\
         (set! tmp (car tmp))\n\
         (and (zero? (system (string-append command \" > \" tmp)))\n\
              (file-exists? tmp)\n\
              (let ((line (call-with-input-file tmp read-line)))\n\
                (if (eof-object? line) \"\" line))))))\n\
");
	add_feature("directory");
}