Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	sbin/fsck/fsck.c	Lines:	80	208	38.5 %
Date:	2017-11-07	Branches:	36	156	23.1 %


/*	$OpenBSD: fsck.c,v 1.38 2015/11/23 19:19:29 deraadt Exp $	*/
/*	$NetBSD: fsck.c,v 1.7 1996/10/03 20:06:30 christos Exp $	*/

/*
 * Copyright (c) 1996 Christos Zoulas. All rights reserved.
 * Copyright (c) 1980, 1989, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * From: @(#)mount.c	8.19 (Berkeley) 4/19/94
 * From: NetBSD: mount.c,v 1.24 1995/11/18 03:34:29 cgd Exp
 *
 */

#include <sys/types.h>
#include <sys/mount.h>
#include <sys/queue.h>
#include <sys/resource.h>
#include <sys/wait.h>

#include <err.h>
#include <errno.h>
#include <fstab.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#include <util.h>

#include "pathnames.h"
#include "fsutil.h"

static enum { IN_LIST, NOT_IN_LIST } which = NOT_IN_LIST;
static enum { NONET_FILTER, NET_FILTER } filter = NONET_FILTER;

TAILQ_HEAD(fstypelist, entry) opthead, selhead;

struct entry {
	char *type;
	char *options;
	TAILQ_ENTRY(entry) entries;
};

static int maxrun;
static char *options;
static int flags;

int main(int, char *[]);

static int checkfs(const char *, const char *, const char *, void *, pid_t *);
static int selected(const char *);
static void addoption(char *);
static const char *getoptions(const char *);
static void addentry(struct fstypelist *, const char *, const char *);
static void maketypelist(char *);
static char *catopt(char *, const char *, int);
static void mangle(char *, int *, const char ***, int *);
static void usage(void);
static void *isok(struct fstab *);
static int hasopt(const char *, const char *);


int
main(int argc, char *argv[])
{
	const char *errstr;
	struct fstab *fs;
	int i, rval = 0;
	char *vfstype = NULL;
	char *p, globopt[3];
	struct rlimit rl;

	/* Increase our data size to the max */
	if (getrlimit(RLIMIT_DATA, &rl) == 0) {
		if (geteuid() == 0)
			rl.rlim_cur = rl.rlim_max = RLIM_INFINITY;
		else
			rl.rlim_cur = rl.rlim_max;
		if (setrlimit(RLIMIT_DATA, &rl) < 0)
			warn("Can't set resource limit to max data size");
	} else
		warn("Can't get resource limit for data size");

	if (pledge("stdio rpath wpath disklabel proc exec flock cpath", NULL) == -1)
		err(1, "pledge");

	globopt[0] = '-';
	globopt[2] = '\0';

	TAILQ_INIT(&selhead);
	TAILQ_INIT(&opthead);

	while ((i = getopt(argc, argv, "b:dfl:nNpT:t:vy")) != -1)
		switch (i) {
		case 'd':
			flags |= CHECK_DEBUG;
			break;

		case 'v':
			flags |= CHECK_VERBOSE;
			break;

		case 'p':
			flags |= CHECK_PREEN;
			/*FALLTHROUGH*/
		case 'n':
		case 'f':
		case 'y':
			globopt[1] = i;
			options = catopt(options, globopt, 1);
			break;

		case 'b':
			if (asprintf(&p, "-b %s", optarg) == -1)
				err(1, "malloc failed");
			options = catopt(options, p, 1);
			free(p);
			break;

		case 'l':
			maxrun = strtonum(optarg, 0, INT_MAX, &errstr);
			if (errstr)
				errx(1, "-l %s: %s", optarg, errstr);

			break;

		case 'T':
			if (*optarg)
				addoption(optarg);
			break;

		case 't':
			if (!TAILQ_EMPTY(&selhead))
				errx(1, "only one -t option may be specified.");

			maketypelist(optarg);
			vfstype = optarg;
			break;

		case 'N':
			filter = NET_FILTER;
			break;

		case '?':
		default:
			usage();
			/* NOTREACHED */
		}

	argc -= optind;
	argv += optind;

	if (argc == 0)
		return checkfstab(flags, maxrun, isok, checkfs);

#define	BADTYPE(type)							\
	(strcmp(type, FSTAB_RO) &&					\
	    strcmp(type, FSTAB_RW) && strcmp(type, FSTAB_RQ))


	for (; argc--; argv++) {
		char *spec, *type;

		if ((strncmp(*argv, "/dev/", 5) == 0 || isduid(*argv, 0)) &&
		    (type = readlabelfs(*argv, 0))) {
			spec = *argv;
		} else if ((fs = getfsfile(*argv)) == NULL &&
		    (fs = getfsspec(*argv)) == NULL) {
			if (vfstype == NULL)
				errx(1,
				    "%s: unknown special file or file system.",
				    *argv);
			spec = *argv;
			type = vfstype;
		} else {
			spec = fs->fs_spec;
			type = fs->fs_vfstype;
			if (BADTYPE(fs->fs_type))
				errx(1, "%s has unknown file system type.",
				    *argv);
		}

		rval |= checkfs(type, blockcheck(spec), *argv, NULL, NULL);
	}

	return rval;
}


static void *
isok(struct fstab *fs)
{
	if (fs->fs_passno == 0)
		return NULL;

	if (BADTYPE(fs->fs_type))
		return NULL;

	switch (filter) {
	case NET_FILTER:
		if (!hasopt(fs->fs_mntops, "net"))
			return NULL;
		break;
	case NONET_FILTER:
		if (hasopt(fs->fs_mntops, "net"))
			return NULL;
		break;
	}
	if (!selected(fs->fs_vfstype))
		return NULL;

	return fs;
}


static int
checkfs(const char *vfstype, const char *spec, const char *mntpt, void *auxarg,
    pid_t *pidp)
{
	/* List of directories containing fsck_xxx subcommands. */
	static const char *edirs[] = {
		_PATH_SBIN,
		_PATH_USRSBIN,
		NULL
	};
	const char **argv, **edir;
	pid_t pid;
	int argc, i, status, maxargc;
	char *optbuf = NULL, fsname[PATH_MAX], execname[PATH_MAX];
	const char *extra = getoptions(vfstype);

	if (strcmp(vfstype, "ufs") == 0)
		vfstype = MOUNT_UFS;

	maxargc = 100;
	argv = ereallocarray(NULL, maxargc, sizeof(char *));

	argc = 0;
	(void)snprintf(fsname, sizeof(fsname), "fsck_%s", vfstype);
	argv[argc++] = fsname;

	if (options) {
		if (extra != NULL)
			optbuf = catopt(options, extra, 0);
		else
			optbuf = estrdup(options);
	}
	else if (extra)
		optbuf = estrdup(extra);

	if (optbuf)
		mangle(optbuf, &argc, &argv, &maxargc);

	argv[argc++] = spec;
	argv[argc] = NULL;

	if (flags & (CHECK_DEBUG|CHECK_VERBOSE)) {
		(void)printf("start %s %swait %s", mntpt,
			pidp ? "no" : "", fsname);
		for (i = 1; i < argc; i++)
			(void)printf(" %s", argv[i]);
		(void)printf("\n");
	}

	switch (pid = fork()) {
	case -1:				/* Error. */
		warn("fork");
		free(optbuf);
		free(argv);
		return (1);

	case 0:					/* Child. */
		if (flags & CHECK_DEBUG)
			_exit(0);

		/* Go find an executable. */
		edir = edirs;
		do {
			(void)snprintf(execname,
			    sizeof(execname), "%s/fsck_%s", *edir, vfstype);
			execv(execname, (char * const *)argv);
			if (errno != ENOENT) {
				if (spec)
					warn("exec %s for %s", execname, spec);
				else
					warn("exec %s", execname);
			}
		} while (*++edir != NULL);

		if (errno == ENOENT) {
			if (spec)
				warn("exec %s for %s", execname, spec);
			else
				warn("exec %s", execname);
		}
		exit(1);
		/* NOTREACHED */

	default:				/* Parent. */
		free(optbuf);
		free(argv);

		if (pidp) {
			*pidp = pid;
			return 0;
		}

		if (waitpid(pid, &status, 0) < 0) {
			warn("waitpid");
			return (1);
		}

		if (WIFEXITED(status)) {
			if (WEXITSTATUS(status) != 0)
				return (WEXITSTATUS(status));
		}
		else if (WIFSIGNALED(status)) {
			warnx("%s: %s", spec, strsignal(WTERMSIG(status)));
			return (1);
		}
		break;
	}

	return (0);
}


static int
selected(const char *type)
{
	struct entry *e;

	/* If no type specified, it's always selected. */
	TAILQ_FOREACH(e, &selhead, entries)
		if (!strncmp(e->type, type, MFSNAMELEN))
			return which == IN_LIST ? 1 : 0;

	return which == IN_LIST ? 0 : 1;
}


static const char *
getoptions(const char *type)
{
	struct entry *e;

	TAILQ_FOREACH(e, &opthead, entries)
		if (!strncmp(e->type, type, MFSNAMELEN))
			return e->options;
	return "";
}


static void
addoption(char *optstr)
{
	char *newoptions;
	struct entry *e;

	if ((newoptions = strchr(optstr, ':')) == NULL)
		errx(1, "Invalid option string");

	*newoptions++ = '\0';

	TAILQ_FOREACH(e, &opthead, entries)
		if (!strncmp(e->type, optstr, MFSNAMELEN)) {
			e->options = catopt(e->options, newoptions, 1);
			return;
		}
	addentry(&opthead, optstr, newoptions);
}


static void
addentry(struct fstypelist *list, const char *type, const char *opts)
{
	struct entry *e;

	e = emalloc(sizeof(struct entry));
	e->type = estrdup(type);
	e->options = estrdup(opts);
	TAILQ_INSERT_TAIL(list, e, entries);
}


static void
maketypelist(char *fslist)
{
	char *ptr;

	if ((fslist == NULL) || (fslist[0] == '\0'))
		errx(1, "empty type list");

	if (fslist[0] == 'n' && fslist[1] == 'o') {
		fslist += 2;
		which = NOT_IN_LIST;
	}
	else
		which = IN_LIST;

	while ((ptr = strsep(&fslist, ",")) != NULL)
		addentry(&selhead, ptr, "");

}


static char *
catopt(char *s0, const char *s1, int fr)
{
	char *cp;

	if (s0 && *s0) {
		if (asprintf(&cp, "%s,%s", s0, s1) == -1)
			err(1, "malloc failed");
	} else
		cp = estrdup(s1);

	if (fr)
		free(s0);
	return (cp);
}


static void
mangle(char *opts, int *argcp, const char ***argvp, int *maxargcp)
{
	char *p, *s;
	int argc = *argcp, maxargc = *maxargcp;
	const char **argv = *argvp;

	for (s = opts; (p = strsep(&s, ",")) != NULL;) {
		/* always leave space for one more argument and the NULL */
		if (argc >= maxargc - 3) {
			int newmaxargc = maxargc + 50;

			argv = ereallocarray(argv, newmaxargc, sizeof(char *));
			maxargc = newmaxargc;
		}
		if (*p != '\0') {
			if (*p == '-') {
				argv[argc++] = p;
				p = strchr(p, '=');
				if (p) {
					*p = '\0';
					argv[argc++] = p+1;
				}
			}
			else {
				argv[argc++] = "-o";
				argv[argc++] = p;
			}
		}
	}

	*argcp = argc;
	*argvp = argv;
	*maxargcp = maxargc;
}

static int
hasopt(const char *mntopts, const char *option)
{
	int found;
	char *opt, *optbuf;

	if (mntopts == NULL)
		return (0);
	optbuf = strdup(mntopts);
	found = 0;
	for (opt = optbuf; !found && opt != NULL; strsep(&opt, ","))
		found = !strncmp(opt, option, strlen(option));
	free(optbuf);
	return (found);
}


static void
usage(void)
{
	extern char *__progname;

	fprintf(stderr, "usage: %s "
	    "[-dfNnpvy] [-b block#] [-l maxparallel] [-T fstype:fsoptions]\n"
	    "            [-t fstype] [special | node ...]\n", __progname);
	exit(1);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: fsck.c,v 1.38 2015/11/23 19:19:29 deraadt Exp $ */
2			/* $NetBSD: fsck.c,v 1.7 1996/10/03 20:06:30 christos Exp $ */
3
4			/*
5			* Copyright (c) 1996 Christos Zoulas. All rights reserved.
6			* Copyright (c) 1980, 1989, 1993, 1994
7			* The Regents of the University of California. All rights reserved.
8			*
9			* Redistribution and use in source and binary forms, with or without
10			* modification, are permitted provided that the following conditions
11			* are met:
12			* 1. Redistributions of source code must retain the above copyright
13			* notice, this list of conditions and the following disclaimer.
14			* 2. Redistributions in binary form must reproduce the above copyright
15			* notice, this list of conditions and the following disclaimer in the
16			* documentation and/or other materials provided with the distribution.
17			* 3. Neither the name of the University nor the names of its contributors
18			* may be used to endorse or promote products derived from this software
19			* without specific prior written permission.
20			*
21			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31			* SUCH DAMAGE.
32			*
33			* From: @(#)mount.c 8.19 (Berkeley) 4/19/94
34			* From: NetBSD: mount.c,v 1.24 1995/11/18 03:34:29 cgd Exp
35			*
36			*/
37
38			#include <sys/types.h>
39			#include <sys/mount.h>
40			#include <sys/queue.h>
41			#include <sys/resource.h>
42			#include <sys/wait.h>
43
44			#include <err.h>
45			#include <errno.h>
46			#include <fstab.h>
47			#include <signal.h>
48			#include <stdio.h>
49			#include <stdlib.h>
50			#include <string.h>
51			#include <unistd.h>
52			#include <limits.h>
53			#include <util.h>
54
55			#include "pathnames.h"
56			#include "fsutil.h"
57
58			static enum { IN_LIST, NOT_IN_LIST } which = NOT_IN_LIST;
59			static enum { NONET_FILTER, NET_FILTER } filter = NONET_FILTER;
60
61			TAILQ_HEAD(fstypelist, entry) opthead, selhead;
62
63			struct entry {
64			char *type;
65			char *options;
66			TAILQ_ENTRY(entry) entries;
67			};
68
69			static int maxrun;
70			static char *options;
71			static int flags;
72
73			int main(int, char *[]);
74
75			static int checkfs(const char , const char , const char , void , pid_t *);
76			static int selected(const char *);
77			static void addoption(char *);
78			static const char getoptions(const char );
79			static void addentry(struct fstypelist , const char , const char *);
80			static void maketypelist(char *);
81			static char catopt(char , const char *, int);
82			static void mangle(char , int , const char **, int );
83			static void usage(void);
84			static void isok(struct fstab );
85			static int hasopt(const char , const char );
86
87
88			int
89			main(int argc, char *argv[])
90			{
91		32	const char *errstr;
92			struct fstab *fs;
93			int i, rval = 0;
94			char *vfstype = NULL;
95		16	char *p, globopt[3];
96		16	struct rlimit rl;
97
98			/* Increase our data size to the max */
99	✓✗	16	if (getrlimit(RLIMIT_DATA, &rl) == 0) {
100	✓✗	16	if (geteuid() == 0)
101		16	rl.rlim_cur = rl.rlim_max = RLIM_INFINITY;
102			else
103			rl.rlim_cur = rl.rlim_max;
104	✗✓	16	if (setrlimit(RLIMIT_DATA, &rl) < 0)
105			warn("Can't set resource limit to max data size");
106			} else
107			warn("Can't get resource limit for data size");
108
109	✗✓	16	if (pledge("stdio rpath wpath disklabel proc exec flock cpath", NULL) == -1)
110			err(1, "pledge");
111
112		16	globopt[0] = '-';
113		16	globopt[2] = '\0';
114
115		16	TAILQ_INIT(&selhead);
116		16	TAILQ_INIT(&opthead);
117
118	✓✓	64	while ((i = getopt(argc, argv, "b:dfl:nNpT:t:vy")) != -1)
119	✗✗✗✗ ✗✓✗✗ ✗✗✗✗	32	switch (i) {
120			case 'd':
121			flags \|= CHECK_DEBUG;
122			break;
123
124			case 'v':
125			flags \|= CHECK_VERBOSE;
126			break;
127
128			case 'p':
129			flags \|= CHECK_PREEN;
130			/FALLTHROUGH/
131			case 'n':
132			case 'f':
133			case 'y':
134		32	globopt[1] = i;
135		32	options = catopt(options, globopt, 1);
136		32	break;
137
138			case 'b':
139			if (asprintf(&p, "-b %s", optarg) == -1)
140			err(1, "malloc failed");
141			options = catopt(options, p, 1);
142			free(p);
143			break;
144
145			case 'l':
146			maxrun = strtonum(optarg, 0, INT_MAX, &errstr);
147			if (errstr)
148			errx(1, "-l %s: %s", optarg, errstr);
149
150			break;
151
152			case 'T':
153			if (*optarg)
154			addoption(optarg);
155			break;
156
157			case 't':
158			if (!TAILQ_EMPTY(&selhead))
159			errx(1, "only one -t option may be specified.");
160
161			maketypelist(optarg);
162			vfstype = optarg;
163			break;
164
165			case 'N':
166			filter = NET_FILTER;
167			break;
168
169			case '?':
170			default:
171			usage();
172			/* NOTREACHED */
173			}
174
175		16	argc -= optind;
176		16	argv += optind;
177
178	✗✓	16	if (argc == 0)
179			return checkfstab(flags, maxrun, isok, checkfs);
180
181			#define BADTYPE(type) \
182			(strcmp(type, FSTAB_RO) && \
183			strcmp(type, FSTAB_RW) && strcmp(type, FSTAB_RQ))
184
185
186	✓✓	48	for (; argc--; argv++) {
187			char spec, type;
188
189	✗✓✗✗ ✓✗	32	if ((strncmp(argv, "/dev/", 5) == 0 \|\| isduid(argv, 0)) &&
190		16	(type = readlabelfs(*argv, 0))) {
191		16	spec = *argv;
192	✗✗✗✗	16	} else if ((fs = getfsfile(*argv)) == NULL &&
193			(fs = getfsspec(*argv)) == NULL) {
194			if (vfstype == NULL)
195			errx(1,
196			"%s: unknown special file or file system.",
197			*argv);
198			spec = *argv;
199			type = vfstype;
200			} else {
201			spec = fs->fs_spec;
202			type = fs->fs_vfstype;
203			if (BADTYPE(fs->fs_type))
204			errx(1, "%s has unknown file system type.",
205			*argv);
206			}
207
208		16	rval \|= checkfs(type, blockcheck(spec), *argv, NULL, NULL);
209			}
210
211		16	return rval;
212		16	}
213
214
215			static void *
216			isok(struct fstab *fs)
217			{
218			if (fs->fs_passno == 0)
219			return NULL;
220
221			if (BADTYPE(fs->fs_type))
222			return NULL;
223
224			switch (filter) {
225			case NET_FILTER:
226			if (!hasopt(fs->fs_mntops, "net"))
227			return NULL;
228			break;
229			case NONET_FILTER:
230			if (hasopt(fs->fs_mntops, "net"))
231			return NULL;
232			break;
233			}
234			if (!selected(fs->fs_vfstype))
235			return NULL;
236
237			return fs;
238			}
239
240
241			static int
242			checkfs(const char vfstype, const char spec, const char mntpt, void auxarg,
243			pid_t *pidp)
244			{
245			/* List of directories containing fsck_xxx subcommands. */
246			static const char *edirs[] = {
247			_PATH_SBIN,
248			_PATH_USRSBIN,
249			NULL
250			};
251		32	const char argv, edir;
252			pid_t pid;
253		16	int argc, i, status, maxargc;
254		16	char *optbuf = NULL, fsname[PATH_MAX], execname[PATH_MAX];
255		16	const char *extra = getoptions(vfstype);
256
257	✗✓	16	if (strcmp(vfstype, "ufs") == 0)
258			vfstype = MOUNT_UFS;
259
260		16	maxargc = 100;
261		16	argv = ereallocarray(NULL, maxargc, sizeof(char *));
262
263		16	argc = 0;
264		16	(void)snprintf(fsname, sizeof(fsname), "fsck_%s", vfstype);
265		16	argv[argc++] = fsname;
266
267	✓✗	16	if (options) {
268	✓✗	16	if (extra != NULL)
269		16	optbuf = catopt(options, extra, 0);
270			else
271			optbuf = estrdup(options);
272			}
273			else if (extra)
274			optbuf = estrdup(extra);
275
276	✓✗	16	if (optbuf)
277		16	mangle(optbuf, &argc, &argv, &maxargc);
278
279		16	argv[argc++] = spec;
280		16	argv[argc] = NULL;
281
282	✗✓	16	if (flags & (CHECK_DEBUG\|CHECK_VERBOSE)) {
283			(void)printf("start %s %swait %s", mntpt,
284			pidp ? "no" : "", fsname);
285			for (i = 1; i < argc; i++)
286			(void)printf(" %s", argv[i]);
287			(void)printf("\n");
288			}
289
290	✗✗✓	16	switch (pid = fork()) {
291			case -1: /* Error. */
292			warn("fork");
293			free(optbuf);
294			free(argv);
295			return (1);
296
297			case 0: /* Child. */
298			if (flags & CHECK_DEBUG)
299			_exit(0);
300
301			/* Go find an executable. */
302			edir = edirs;
303			do {
304			(void)snprintf(execname,
305			sizeof(execname), "%s/fsck_%s", *edir, vfstype);
306			execv(execname, (char * const *)argv);
307			if (errno != ENOENT) {
308			if (spec)
309			warn("exec %s for %s", execname, spec);
310			else
311			warn("exec %s", execname);
312			}
313			} while (*++edir != NULL);
314
315			if (errno == ENOENT) {
316			if (spec)
317			warn("exec %s for %s", execname, spec);
318			else
319			warn("exec %s", execname);
320			}
321			exit(1);
322			/* NOTREACHED */
323
324			default: /* Parent. */
325		16	free(optbuf);
326		16	free(argv);
327
328	✗✓	16	if (pidp) {
329			*pidp = pid;
330			return 0;
331			}
332
333	✗✓	16	if (waitpid(pid, &status, 0) < 0) {
334			warn("waitpid");
335			return (1);
336			}
337
338	✓✗	16	if (WIFEXITED(status)) {
339	✗✓	16	if (WEXITSTATUS(status) != 0)
340			return (WEXITSTATUS(status));
341			}
342			else if (WIFSIGNALED(status)) {
343			warnx("%s: %s", spec, strsignal(WTERMSIG(status)));
344			return (1);
345			}
346			break;
347			}
348
349		16	return (0);
350		16	}
351
352
353			static int
354			selected(const char *type)
355			{
356			struct entry *e;
357
358			/* If no type specified, it's always selected. */
359			TAILQ_FOREACH(e, &selhead, entries)
360			if (!strncmp(e->type, type, MFSNAMELEN))
361			return which == IN_LIST ? 1 : 0;
362
363			return which == IN_LIST ? 0 : 1;
364			}
365
366
367			static const char *
368			getoptions(const char *type)
369			{
370			struct entry *e;
371
372	✗✓	48	TAILQ_FOREACH(e, &opthead, entries)
373			if (!strncmp(e->type, type, MFSNAMELEN))
374			return e->options;
375		16	return "";
376		16	}
377
378
379			static void
380			addoption(char *optstr)
381			{
382			char *newoptions;
383			struct entry *e;
384
385			if ((newoptions = strchr(optstr, ':')) == NULL)
386			errx(1, "Invalid option string");
387
388			*newoptions++ = '\0';
389
390			TAILQ_FOREACH(e, &opthead, entries)
391			if (!strncmp(e->type, optstr, MFSNAMELEN)) {
392			e->options = catopt(e->options, newoptions, 1);
393			return;
394			}
395			addentry(&opthead, optstr, newoptions);
396			}
397
398
399			static void
400			addentry(struct fstypelist list, const char type, const char *opts)
401			{
402			struct entry *e;
403
404			e = emalloc(sizeof(struct entry));
405			e->type = estrdup(type);
406			e->options = estrdup(opts);
407			TAILQ_INSERT_TAIL(list, e, entries);
408			}
409
410
411			static void
412			maketypelist(char *fslist)
413			{
414			char *ptr;
415
416			if ((fslist == NULL) \|\| (fslist[0] == '\0'))
417			errx(1, "empty type list");
418
419			if (fslist[0] == 'n' && fslist[1] == 'o') {
420			fslist += 2;
421			which = NOT_IN_LIST;
422			}
423			else
424			which = IN_LIST;
425
426			while ((ptr = strsep(&fslist, ",")) != NULL)
427			addentry(&selhead, ptr, "");
428
429			}
430
431
432			static char *
433			catopt(char s0, const char s1, int fr)
434			{
435		96	char *cp;
436
437	✓✓✓✗	80	if (s0 && *s0) {
438	✗✓	32	if (asprintf(&cp, "%s,%s", s0, s1) == -1)
439			err(1, "malloc failed");
440			} else
441		16	cp = estrdup(s1);
442
443	✓✓	48	if (fr)
444		32	free(s0);
445		96	return (cp);
446		48	}
447
448
449			static void
450			mangle(char opts, int argcp, const char **argvp, int maxargcp)
451			{
452		32	char p, s;
453		16	int argc = argcp, maxargc = maxargcp;
454		16	const char *argv = argvp;
455
456	✓✓	80	for (s = opts; (p = strsep(&s, ",")) != NULL;) {
457			/* always leave space for one more argument and the NULL */
458	✗✓	48	if (argc >= maxargc - 3) {
459			int newmaxargc = maxargc + 50;
460
461			argv = ereallocarray(argv, newmaxargc, sizeof(char *));
462			maxargc = newmaxargc;
463			}
464	✓✓	48	if (*p != '\0') {
465	✓✗	32	if (*p == '-') {
466		32	argv[argc++] = p;
467		32	p = strchr(p, '=');
468	✓✗	32	if (p) {
469			*p = '\0';
470			argv[argc++] = p+1;
471			}
472			}
473			else {
474			argv[argc++] = "-o";
475			argv[argc++] = p;
476			}
477			}
478			}
479
480		16	*argcp = argc;
481		16	*argvp = argv;
482		16	*maxargcp = maxargc;
483		16	}
484
485			static int
486			hasopt(const char mntopts, const char option)
487			{
488			int found;
489			char opt, optbuf;
490
491			if (mntopts == NULL)
492			return (0);
493			optbuf = strdup(mntopts);
494			found = 0;
495			for (opt = optbuf; !found && opt != NULL; strsep(&opt, ","))
496			found = !strncmp(opt, option, strlen(option));
497			free(optbuf);
498			return (found);
499			}
500
501
502			static void
503			usage(void)
504			{
505			extern char *__progname;
506
507			fprintf(stderr, "usage: %s "
508			"[-dfNnpvy] [-b block#] [-l maxparallel] [-T fstype:fsoptions]\n"
509			" [-t fstype] [special \| node ...]\n", __progname);
510			exit(1);
511			}