GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: sbin/restore/interactive.c Lines: 0 313 0.0 %
Date: 2017-11-07 Branches: 0 268 0.0 %

Line Branch Exec Source
1
/*	$OpenBSD: interactive.c,v 1.30 2015/01/20 18:22:21 deraadt Exp $	*/
2
/*	$NetBSD: interactive.c,v 1.10 1997/03/19 08:42:52 lukem Exp $	*/
3
4
/*
5
 * Copyright (c) 1985, 1993
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. Neither the name of the University nor the names of its contributors
17
 *    may be used to endorse or promote products derived from this software
18
 *    without specific prior written permission.
19
 *
20
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30
 * SUCH DAMAGE.
31
 */
32
33
#include <sys/time.h>
34
#include <sys/stat.h>
35
36
#include <ufs/ffs/fs.h>
37
#include <ufs/ufs/dinode.h>
38
#include <ufs/ufs/dir.h>
39
#include <protocols/dumprestore.h>
40
41
#include <setjmp.h>
42
#include <glob.h>
43
#include <stdio.h>
44
#include <errno.h>
45
#include <stdlib.h>
46
#include <string.h>
47
#include <unistd.h>
48
#include <limits.h>
49
50
#include "restore.h"
51
#include "extern.h"
52
53
#define round(a, b) (((a) + (b) - 1) / (b) * (b))
54
55
/*
56
 * Things to handle interruptions.
57
 */
58
static int runshell;
59
static jmp_buf reset;
60
static char *nextarg = NULL;
61
62
/*
63
 * Structure and routines associated with listing directories.
64
 */
65
struct afile {
66
	ino_t	fnum;		/* inode number of file */
67
	char	*fname;		/* file name */
68
	short	len;		/* name length */
69
	char	prefix;		/* prefix character */
70
	char	postfix;	/* postfix character */
71
};
72
struct arglist {
73
	int	freeglob;	/* glob structure needs to be freed */
74
	int	argcnt;		/* next globbed argument to return */
75
	glob_t	glob;		/* globbing information */
76
	char	*cmd;		/* the current command */
77
};
78
79
static char	*copynext(char *, char *);
80
static int	 fcmp(const void *, const void *);
81
static void	 formatf(struct afile *, int);
82
static void	 getcmd(char *, char *, size_t, char *, size_t, struct arglist *);
83
struct dirent	*glob_readdir(RST_DIR *dirp);
84
static int	 glob_stat(const char *, struct stat *);
85
static void	 mkentry(char *, struct direct *, struct afile *);
86
static void	 printlist(char *, char *);
87
88
/*
89
 * Read and execute commands from the terminal.
90
 */
91
void
92
runcmdshell(void)
93
{
94
	struct entry *np;
95
	ino_t ino;
96
	struct arglist arglist;
97
	char curdir[PATH_MAX];
98
	char name[PATH_MAX];
99
	char cmd[BUFSIZ];
100
101
	arglist.freeglob = 0;
102
	arglist.argcnt = 0;
103
	arglist.glob.gl_flags = GLOB_ALTDIRFUNC;
104
	arglist.glob.gl_opendir = (void *)rst_opendir;
105
	arglist.glob.gl_readdir = (void *)glob_readdir;
106
	arglist.glob.gl_closedir = (void *)rst_closedir;
107
	arglist.glob.gl_lstat = glob_stat;
108
	arglist.glob.gl_stat = glob_stat;
109
	canon("/", curdir, sizeof curdir);
110
loop:
111
	if (setjmp(reset) != 0) {
112
		if (arglist.freeglob != 0) {
113
			arglist.freeglob = 0;
114
			arglist.argcnt = 0;
115
			globfree(&arglist.glob);
116
		}
117
		nextarg = NULL;
118
		volno = 0;
119
	}
120
	runshell = 1;
121
	getcmd(curdir, cmd, sizeof cmd, name, sizeof name, &arglist);
122
	switch (cmd[0]) {
123
	/*
124
	 * Add elements to the extraction list.
125
	 */
126
	case 'a':
127
		if (strncmp(cmd, "add", strlen(cmd)) != 0)
128
			goto bad;
129
		ino = dirlookup(name);
130
		if (ino == 0)
131
			break;
132
		if (mflag)
133
			pathcheck(name);
134
		treescan(name, ino, addfile);
135
		break;
136
	/*
137
	 * Change working directory.
138
	 */
139
	case 'c':
140
		if (strncmp(cmd, "cd", strlen(cmd)) != 0)
141
			goto bad;
142
		ino = dirlookup(name);
143
		if (ino == 0)
144
			break;
145
		if (inodetype(ino) == LEAF) {
146
			fprintf(stderr, "%s: not a directory\n", name);
147
			break;
148
		}
149
		(void)strlcpy(curdir, name, sizeof curdir);
150
		break;
151
	/*
152
	 * Delete elements from the extraction list.
153
	 */
154
	case 'd':
155
		if (strncmp(cmd, "delete", strlen(cmd)) != 0)
156
			goto bad;
157
		np = lookupname(name);
158
		if (np == NULL || (np->e_flags & NEW) == 0) {
159
			fprintf(stderr, "%s: not on extraction list\n", name);
160
			break;
161
		}
162
		treescan(name, np->e_ino, deletefile);
163
		break;
164
	/*
165
	 * Extract the requested list.
166
	 */
167
	case 'e':
168
		if (strncmp(cmd, "extract", strlen(cmd)) != 0)
169
			goto bad;
170
		createfiles();
171
		createlinks();
172
		setdirmodes(0);
173
		if (dflag)
174
			checkrestore();
175
		volno = 0;
176
		break;
177
	/*
178
	 * List available commands.
179
	 */
180
	case 'h':
181
		if (strncmp(cmd, "help", strlen(cmd)) != 0)
182
			goto bad;
183
	case '?':
184
		fprintf(stderr, "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
185
			"Available commands are:\n",
186
			"\tls [arg] - list directory\n",
187
			"\tcd arg - change directory\n",
188
			"\tpwd - print current directory\n",
189
			"\tadd [arg] - add `arg' to list of",
190
			" files to be extracted\n",
191
			"\tdelete [arg] - delete `arg' from",
192
			" list of files to be extracted\n",
193
			"\textract - extract requested files\n",
194
			"\tsetmodes - set modes of requested directories\n",
195
			"\tquit - immediately exit program\n",
196
			"\twhat - list dump header information\n",
197
			"\tverbose - toggle verbose flag",
198
			" (useful with ``ls'')\n",
199
			"\thelp or `?' - print this list\n",
200
			"If no `arg' is supplied, the current",
201
			" directory is used\n");
202
		break;
203
	/*
204
	 * List a directory.
205
	 */
206
	case 'l':
207
		if (strncmp(cmd, "ls", strlen(cmd)) != 0)
208
			goto bad;
209
		printlist(name, curdir);
210
		break;
211
	/*
212
	 * Print current directory.
213
	 */
214
	case 'p':
215
		if (strncmp(cmd, "pwd", strlen(cmd)) != 0)
216
			goto bad;
217
		if (curdir[1] == '\0')
218
			fprintf(stderr, "/\n");
219
		else
220
			fprintf(stderr, "%s\n", &curdir[1]);
221
		break;
222
	/*
223
	 * Quit.
224
	 */
225
	case 'q':
226
		if (strncmp(cmd, "quit", strlen(cmd)) != 0)
227
			goto bad;
228
		return;
229
	case 'x':
230
		if (strncmp(cmd, "xit", strlen(cmd)) != 0)
231
			goto bad;
232
		return;
233
	/*
234
	 * Toggle verbose mode.
235
	 */
236
	case 'v':
237
		if (strncmp(cmd, "verbose", strlen(cmd)) != 0)
238
			goto bad;
239
		if (vflag) {
240
			fprintf(stderr, "verbose mode off\n");
241
			vflag = 0;
242
			break;
243
		}
244
		fprintf(stderr, "verbose mode on\n");
245
		vflag++;
246
		break;
247
	/*
248
	 * Just restore requested directory modes.
249
	 */
250
	case 's':
251
		if (strncmp(cmd, "setmodes", strlen(cmd)) != 0)
252
			goto bad;
253
		setdirmodes(FORCE);
254
		break;
255
	/*
256
	 * Print out dump header information.
257
	 */
258
	case 'w':
259
		if (strncmp(cmd, "what", strlen(cmd)) != 0)
260
			goto bad;
261
		printdumpinfo();
262
		break;
263
	/*
264
	 * Turn on debugging.
265
	 */
266
	case 'D':
267
		if (strncmp(cmd, "Debug", strlen(cmd)) != 0)
268
			goto bad;
269
		if (dflag) {
270
			fprintf(stderr, "debugging mode off\n");
271
			dflag = 0;
272
			break;
273
		}
274
		fprintf(stderr, "debugging mode on\n");
275
		dflag++;
276
		break;
277
	/*
278
	 * Unknown command.
279
	 */
280
	default:
281
	bad:
282
		fprintf(stderr, "%s: unknown command; type ? for help\n", cmd);
283
		break;
284
	}
285
	goto loop;
286
}
287
288
/*
289
 * Read and parse an interactive command.
290
 * The first word on the line is assigned to "cmd". If
291
 * there are no arguments on the command line, then "curdir"
292
 * is returned as the argument. If there are arguments
293
 * on the line they are returned one at a time on each
294
 * successive call to getcmd. Each argument is first assigned
295
 * to "name". If it does not start with "/" the pathname in
296
 * "curdir" is prepended to it. Finally "canon" is called to
297
 * eliminate any embedded ".." components.
298
 */
299
static void
300
getcmd(char *curdir, char *cmd, size_t cmdlen, char *name, size_t namelen,
301
       struct arglist *ap)
302
{
303
	char *cp;
304
	static char input[BUFSIZ];
305
	char output[BUFSIZ];
306
#	define rawname input	/* save space by reusing input buffer */
307
	int globretval;
308
309
	/*
310
	 * Check to see if still processing arguments.
311
	 */
312
	if (ap->argcnt > 0)
313
		goto retnext;
314
	if (nextarg != NULL)
315
		goto getnext;
316
	/*
317
	 * Read a command line and trim off trailing white space.
318
	 */
319
	do {
320
		(void)fprintf(stderr, "%s > ", __progname);
321
		(void)fflush(stderr);
322
		if (fgets(input, sizeof input, terminal) == NULL) {
323
			(void)strlcpy(cmd, "quit", cmdlen);
324
			return;
325
		}
326
	} while (input[0] == '\n' || input[0] == '\0');
327
	for (cp = &input[strlen(input) - 1];
328
	     cp >= input && (*cp == ' ' || *cp == '\t' || *cp == '\n'); cp--)
329
		/* trim off trailing white space and newline */;
330
	*++cp = '\0';
331
	/*
332
	 * Copy the command into "cmd".
333
	 */
334
	cp = copynext(input, cmd);
335
	ap->cmd = cmd;
336
	/*
337
	 * If no argument, use curdir as the default.
338
	 */
339
	if (*cp == '\0') {
340
		(void)strlcpy(name, curdir, PATH_MAX);
341
		return;
342
	}
343
	nextarg = cp;
344
	/*
345
	 * Find the next argument.
346
	 */
347
getnext:
348
	cp = copynext(nextarg, rawname);
349
	if (*cp == '\0')
350
		nextarg = NULL;
351
	else
352
		nextarg = cp;
353
	/*
354
	 * If it is an absolute pathname, canonicalize it and return it.
355
	 */
356
	if (rawname[0] == '/') {
357
		canon(rawname, name, namelen);
358
	} else {
359
		/*
360
		 * For relative pathnames, prepend the current directory to
361
		 * it then canonicalize and return it.
362
		 */
363
		snprintf(output, sizeof(output), "%s/%s", curdir, rawname);
364
		canon(output, name, namelen);
365
	}
366
	if ((globretval = glob(name, GLOB_ALTDIRFUNC | GLOB_NOESCAPE,
367
	    NULL, &ap->glob)) < 0) {
368
		fprintf(stderr, "%s: %s: ", ap->cmd, name);
369
		switch (globretval) {
370
		case GLOB_NOSPACE:
371
			fprintf(stderr, "out of memory\n");
372
			break;
373
		case GLOB_NOMATCH:
374
			fprintf(stderr, "no filename match.\n");
375
			break;
376
		case GLOB_ABORTED:
377
			fprintf(stderr, "glob() aborted.\n");
378
			break;
379
		default:
380
			fprintf(stderr, "unknown error!\n");
381
			break;
382
		}
383
	}
384
385
	if (ap->glob.gl_pathc == 0)
386
		return;
387
	ap->freeglob = 1;
388
	ap->argcnt = ap->glob.gl_pathc;
389
390
retnext:
391
	strlcpy(name, ap->glob.gl_pathv[ap->glob.gl_pathc - ap->argcnt],
392
	    PATH_MAX);
393
	if (--ap->argcnt == 0) {
394
		ap->freeglob = 0;
395
		globfree(&ap->glob);
396
	}
397
#	undef rawname
398
}
399
400
/*
401
 * Strip off the next token of the input.
402
 */
403
static char *
404
copynext(char *input, char *output)
405
{
406
	char *cp, *bp;
407
	char quote;
408
409
	for (cp = input; *cp == ' ' || *cp == '\t'; cp++)
410
		/* skip to argument */;
411
	bp = output;
412
	while (*cp != ' ' && *cp != '\t' && *cp != '\0') {
413
		/*
414
		 * Handle back slashes.
415
		 */
416
		if (*cp == '\\') {
417
			if (*++cp == '\0') {
418
				fprintf(stderr,
419
					"command lines cannot be continued\n");
420
				continue;
421
			}
422
			*bp++ = *cp++;
423
			continue;
424
		}
425
		/*
426
		 * The usual unquoted case.
427
		 */
428
		if (*cp != '\'' && *cp != '"') {
429
			*bp++ = *cp++;
430
			continue;
431
		}
432
		/*
433
		 * Handle single and double quotes.
434
		 */
435
		quote = *cp++;
436
		while (*cp != quote && *cp != '\0')
437
			*bp++ = *cp++;
438
		if (*cp++ == '\0') {
439
			fprintf(stderr, "missing %c\n", quote);
440
			cp--;
441
			continue;
442
		}
443
	}
444
	*bp = '\0';
445
	return (cp);
446
}
447
448
/*
449
 * Canonicalize file names to always start with ``./'' and
450
 * remove any imbedded "." and ".." components.
451
 */
452
void
453
canon(char *rawname, char *canonname, size_t canonnamelen)
454
{
455
	char *cp, *np;
456
457
	if (strcmp(rawname, ".") == 0 || strncmp(rawname, "./", 2) == 0)
458
		(void)strlcpy(canonname, "", canonnamelen);
459
	else if (rawname[0] == '/')
460
		(void)strlcpy(canonname, ".", canonnamelen);
461
	else
462
		(void)strlcpy(canonname, "./", canonnamelen);
463
	(void)strlcat(canonname, rawname, canonnamelen);
464
	/*
465
	 * Eliminate multiple and trailing '/'s
466
	 */
467
	for (cp = np = canonname; *np != '\0'; cp++) {
468
		*cp = *np++;
469
		while (*cp == '/' && *np == '/')
470
			np++;
471
	}
472
	*cp = '\0';
473
	if (*--cp == '/')
474
		*cp = '\0';
475
	/*
476
	 * Eliminate extraneous "." and ".." from pathnames.
477
	 */
478
	for (np = canonname; *np != '\0'; ) {
479
		np++;
480
		cp = np;
481
		while (*np != '/' && *np != '\0')
482
			np++;
483
		if (np - cp == 1 && *cp == '.') {
484
			cp--;
485
			(void)strlcpy(cp, np, canonname + canonnamelen - cp);
486
			np = cp;
487
		}
488
		if (np - cp == 2 && strncmp(cp, "..", 2) == 0) {
489
			cp--;
490
			while (cp > &canonname[1] && *--cp != '/')
491
				/* find beginning of name */;
492
			(void)strlcpy(cp, np, canonname + canonnamelen - cp);
493
			np = cp;
494
		}
495
	}
496
}
497
498
/*
499
 * Do an "ls" style listing of a directory
500
 */
501
static void
502
printlist(char *name, char *basename)
503
{
504
	struct afile *fp, *list, *listp = NULL;
505
	struct direct *dp;
506
	struct afile single;
507
	RST_DIR *dirp;
508
	size_t namelen;
509
	int entries, len;
510
	char locname[PATH_MAX];
511
512
	dp = pathsearch(name);
513
	if (dp == NULL || (!dflag && TSTINO(dp->d_ino, dumpmap) == 0))
514
		return;
515
	if ((dirp = rst_opendir(name)) == NULL) {
516
		entries = 1;
517
		list = &single;
518
		mkentry(name, dp, list);
519
		len = strlen(basename) + 1;
520
		if (strlen(name) - len > single.len) {
521
			freename(single.fname);
522
			single.fname = savename(&name[len]);
523
			single.len = strlen(single.fname);
524
		}
525
	} else {
526
		entries = 0;
527
		while ((dp = rst_readdir(dirp)))
528
			entries++;
529
		rst_closedir(dirp);
530
		list = calloc(entries, sizeof(struct afile));
531
		if (list == NULL) {
532
			fprintf(stderr, "ls: out of memory\n");
533
			return;
534
		}
535
		if ((dirp = rst_opendir(name)) == NULL)
536
			panic("directory reopen failed\n");
537
		fprintf(stderr, "%s:\n", name);
538
		entries = 0;
539
		listp = list;
540
		namelen = strlcpy(locname, name, sizeof(locname));
541
		if (namelen >= sizeof(locname) - 1)
542
			namelen = sizeof(locname) - 2;
543
		locname[namelen++] = '/';
544
		locname[namelen] = '\0';
545
		while ((dp = rst_readdir(dirp))) {
546
			if (dp == NULL)
547
				break;
548
			if (!dflag && TSTINO(dp->d_ino, dumpmap) == 0)
549
				continue;
550
			if (!vflag && (strcmp(dp->d_name, ".") == 0 ||
551
			     strcmp(dp->d_name, "..") == 0))
552
				continue;
553
			locname[namelen] = '\0';
554
			if (namelen + dp->d_namlen >= PATH_MAX) {
555
				fprintf(stderr, "%s%s: name exceeds %d char\n",
556
					locname, dp->d_name, PATH_MAX);
557
			} else {
558
				(void)strncat(locname, dp->d_name,
559
				    (int)dp->d_namlen);
560
				mkentry(locname, dp, listp++);
561
				entries++;
562
			}
563
		}
564
		rst_closedir(dirp);
565
		if (entries == 0) {
566
			fprintf(stderr, "\n");
567
			free(list);
568
			return;
569
		}
570
		qsort((char *)list, entries, sizeof(struct afile), fcmp);
571
	}
572
	formatf(list, entries);
573
	if (dirp != NULL) {
574
		for (fp = listp - 1; fp >= list; fp--)
575
			freename(fp->fname);
576
		fprintf(stderr, "\n");
577
		free(list);
578
	}
579
}
580
581
/*
582
 * Read the contents of a directory.
583
 */
584
static void
585
mkentry(char *name, struct direct *dp, struct afile *fp)
586
{
587
	char *cp;
588
	struct entry *np;
589
590
	fp->fnum = dp->d_ino;
591
	fp->fname = savename(dp->d_name);
592
	for (cp = fp->fname; *cp; cp++)
593
		if (!vflag && (*cp < ' ' || *cp >= 0177))
594
			*cp = '?';
595
	fp->len = cp - fp->fname;
596
	if (dflag && TSTINO(fp->fnum, dumpmap) == 0)
597
		fp->prefix = '^';
598
	else if ((np = lookupname(name)) != NULL && (np->e_flags & NEW))
599
		fp->prefix = '*';
600
	else
601
		fp->prefix = ' ';
602
	switch(dp->d_type) {
603
604
	default:
605
		fprintf(stderr, "Warning: undefined file type %d\n",
606
		    dp->d_type);
607
		/* fall through */
608
	case DT_REG:
609
		fp->postfix = ' ';
610
		break;
611
612
	case DT_LNK:
613
		fp->postfix = '@';
614
		break;
615
616
	case DT_FIFO:
617
	case DT_SOCK:
618
		fp->postfix = '=';
619
		break;
620
621
	case DT_CHR:
622
	case DT_BLK:
623
		fp->postfix = '#';
624
		break;
625
626
	case DT_UNKNOWN:
627
	case DT_DIR:
628
		if (inodetype(dp->d_ino) == NODE)
629
			fp->postfix = '/';
630
		else
631
			fp->postfix = ' ';
632
		break;
633
	}
634
	return;
635
}
636
637
/*
638
 * Print out a pretty listing of a directory
639
 */
640
static void
641
formatf(struct afile *list, int nentry)
642
{
643
	struct afile *fp, *endlist;
644
	int width, bigino, haveprefix, havepostfix;
645
	int i, j, w, precision = 0, columns, lines;
646
647
	width = 0;
648
	haveprefix = 0;
649
	havepostfix = 0;
650
	bigino = ROOTINO;
651
	endlist = &list[nentry];
652
	for (fp = &list[0]; fp < endlist; fp++) {
653
		if (bigino < fp->fnum)
654
			bigino = fp->fnum;
655
		if (width < fp->len)
656
			width = fp->len;
657
		if (fp->prefix != ' ')
658
			haveprefix = 1;
659
		if (fp->postfix != ' ')
660
			havepostfix = 1;
661
	}
662
	if (haveprefix)
663
		width++;
664
	if (havepostfix)
665
		width++;
666
	if (vflag) {
667
		for (precision = 0, i = bigino; i > 0; i /= 10)
668
			precision++;
669
		width += precision + 1;
670
	}
671
	width++;
672
	columns = 81 / width;
673
	if (columns == 0)
674
		columns = 1;
675
	lines = (nentry + columns - 1) / columns;
676
	for (i = 0; i < lines; i++) {
677
		for (j = 0; j < columns; j++) {
678
			fp = &list[j * lines + i];
679
			if (vflag) {
680
				fprintf(stderr, "%*llu ", precision,
681
				(unsigned long long)fp->fnum);
682
				fp->len += precision + 1;
683
			}
684
			if (haveprefix) {
685
				putc(fp->prefix, stderr);
686
				fp->len++;
687
			}
688
			fprintf(stderr, "%s", fp->fname);
689
			if (havepostfix) {
690
				putc(fp->postfix, stderr);
691
				fp->len++;
692
			}
693
			if (fp + lines >= endlist) {
694
				fprintf(stderr, "\n");
695
				break;
696
			}
697
			for (w = fp->len; w < width; w++)
698
				putc(' ', stderr);
699
		}
700
	}
701
}
702
703
/*
704
 * Skip over directory entries that are not on the tape
705
 *
706
 * First have to get definition of a dirent.
707
 */
708
#undef DIRBLKSIZ
709
#include <dirent.h>
710
#undef d_ino
711
712
struct dirent *
713
glob_readdir(RST_DIR *dirp)
714
{
715
	struct direct *dp;
716
	static struct dirent adirent;
717
718
	while ((dp = rst_readdir(dirp)) != NULL) {
719
		if (dflag || TSTINO(dp->d_ino, dumpmap))
720
			break;
721
	}
722
	if (dp == NULL)
723
		return (NULL);
724
	adirent.d_fileno = dp->d_ino;
725
	adirent.d_namlen = dp->d_namlen;
726
	memcpy(adirent.d_name, dp->d_name, dp->d_namlen + 1);
727
	return (&adirent);
728
}
729
730
/*
731
 * Return st_mode information in response to stat or lstat calls
732
 */
733
static int
734
glob_stat(const char *name, struct stat *stp)
735
{
736
	struct direct *dp;
737
738
	dp = pathsearch(name);
739
	if (dp == NULL || (!dflag && TSTINO(dp->d_ino, dumpmap) == 0))
740
		return (-1);
741
	if (inodetype(dp->d_ino) == NODE)
742
		stp->st_mode = S_IFDIR;
743
	else
744
		stp->st_mode = S_IFREG;
745
	return (0);
746
}
747
748
/*
749
 * Comparison routine for qsort.
750
 */
751
static int
752
fcmp(const void *f1, const void *f2)
753
{
754
	return (strcmp(((struct afile *)f1)->fname,
755
	    ((struct afile *)f2)->fname));
756
}
757
758
/*
759
 * respond to interrupts
760
 */
761
void
762
onintr(int signo)
763
{
764
	int save_errno = errno;
765
766
	if (command == 'i' && runshell)
767
		longjmp(reset, 1);	/* XXX signal/longjmp reentrancy */
768
	if (reply("restore interrupted, continue") == FAIL)	/* XXX signal race */
769
		_exit(1);
770
	errno = save_errno;
771
}