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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libc/gen/fstab.c	Lines:	0	91	0.0 %
Date:	2017-11-13	Branches:	0	82	0.0 %


/*	$OpenBSD: fstab.c,v 1.22 2016/03/17 23:48:42 mmcc Exp $ */
/*
 * Copyright (c) 1980, 1988, 1993
 *	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.
 */

#include <sys/types.h>
#include <sys/uio.h>
#include <sys/stat.h>

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

static FILE *_fs_fp;
static struct fstab _fs_fstab;

static int fstabscan(void);

static int
fstabscan(void)
{
	char *cp;
#define	MAXLINELENGTH	1024
	static char line[MAXLINELENGTH];
	char subline[MAXLINELENGTH];
	const char *errstr;
	char *last;
	int typexx;

	for (;;) {
		if (!(cp = fgets(line, sizeof(line), _fs_fp)))
			return(0);
/* OLD_STYLE_FSTAB */
		if (!strpbrk(cp, " \t")) {
			_fs_fstab.fs_spec = strtok_r(cp, ":\n", &last);
			if (!_fs_fstab.fs_spec || *_fs_fstab.fs_spec == '#')
				continue;
			_fs_fstab.fs_file = strtok_r(NULL, ":\n", &last);
			_fs_fstab.fs_type = strtok_r(NULL, ":\n", &last);
			if (_fs_fstab.fs_type) {
				if (!strcmp(_fs_fstab.fs_type, FSTAB_XX))
					continue;
				_fs_fstab.fs_mntops = _fs_fstab.fs_type;
				_fs_fstab.fs_vfstype =
				    strcmp(_fs_fstab.fs_type, FSTAB_SW) ?
				    "ufs" : "swap";
				if ((cp = strtok_r(NULL, ":\n", &last))) {
					_fs_fstab.fs_freq = strtonum(cp, 0,
					    INT_MAX, &errstr);
					if (errstr)
						goto bad;
					if ((cp = strtok_r(NULL,
					    ":\n", &last))) {
						_fs_fstab.fs_passno =
						    strtonum(cp, 0, INT_MAX,
						    &errstr);
						if (errstr)
							goto bad;
						return(1);
					}
				}
			}
			goto bad;
		}
/* OLD_STYLE_FSTAB */
		_fs_fstab.fs_spec = strtok_r(cp, " \t\n", &last);
		if (!_fs_fstab.fs_spec || *_fs_fstab.fs_spec == '#')
			continue;
		_fs_fstab.fs_file = strtok_r(NULL, " \t\n", &last);
		_fs_fstab.fs_vfstype = strtok_r(NULL, " \t\n", &last);
		_fs_fstab.fs_mntops = strtok_r(NULL, " \t\n", &last);
		if (_fs_fstab.fs_mntops == NULL)
			goto bad;
		_fs_fstab.fs_freq = 0;
		_fs_fstab.fs_passno = 0;
		if ((cp = strtok_r(NULL, " \t\n", &last)) != NULL) {
			_fs_fstab.fs_freq = strtonum(cp, 0, INT_MAX, &errstr);
			if (errstr)
				goto bad;
			if ((cp = strtok_r(NULL, " \t\n", &last)) != NULL) {
				_fs_fstab.fs_passno = strtonum(cp, 0, INT_MAX,
				    &errstr);
				if (errstr)
					goto bad;
			}
		}
		strlcpy(subline, _fs_fstab.fs_mntops, sizeof subline);
		for (typexx = 0, cp = strtok_r(subline, ",", &last); cp;
		     cp = strtok_r(NULL, ",", &last)) {
			if (strlen(cp) != 2)
				continue;
			if (!strcmp(cp, FSTAB_RW)) {
				_fs_fstab.fs_type = FSTAB_RW;
				break;
			}
			if (!strcmp(cp, FSTAB_RQ)) {
				_fs_fstab.fs_type = FSTAB_RQ;
				break;
			}
			if (!strcmp(cp, FSTAB_RO)) {
				_fs_fstab.fs_type = FSTAB_RO;
				break;
			}
			if (!strcmp(cp, FSTAB_SW)) {
				_fs_fstab.fs_type = FSTAB_SW;
				break;
			}
			if (!strcmp(cp, FSTAB_XX)) {
				_fs_fstab.fs_type = FSTAB_XX;
				typexx++;
				break;
			}
		}
		if (typexx)
			continue;
		if (cp != NULL)
			return(1);

bad:		/* We silently ignore all bogus lines */
		;
	}
}

struct fstab *
getfsent(void)
{
	if ((!_fs_fp && !setfsent()) || !fstabscan())
		return(NULL);
	return(&_fs_fstab);
}

struct fstab *
getfsspec(const char *name)
{
	if (setfsent())
		while (fstabscan())
			if (!strcmp(_fs_fstab.fs_spec, name))
				return(&_fs_fstab);
	return(NULL);
}

struct fstab *
getfsfile(const char *name)
{
	if (setfsent())
		while (fstabscan())
			if (!strcmp(_fs_fstab.fs_file, name))
				return(&_fs_fstab);
	return(NULL);
}

int
setfsent(void)
{
	struct stat sbuf;

	if (_fs_fp) {
		rewind(_fs_fp);
		return(1);
	}

	if (stat(_PATH_FSTAB, &sbuf) != 0)
		goto fail;
	if ((sbuf.st_size == 0) || ((sbuf.st_mode & S_IFMT) != S_IFREG)) {
		errno = EFTYPE;
		goto fail;
	}

	if ((_fs_fp = fopen(_PATH_FSTAB, "re")))
		return(1);

fail:
	return(0);
}
DEF_WEAK(setfsent);

void
endfsent(void)
{
	if (_fs_fp) {
		(void)fclose(_fs_fp);
		_fs_fp = NULL;
	}
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: fstab.c,v 1.22 2016/03/17 23:48:42 mmcc Exp $ */
2			/*
3			* Copyright (c) 1980, 1988, 1993
4			* The Regents of the University of California. All rights reserved.
5			*
6			* Redistribution and use in source and binary forms, with or without
7			* modification, are permitted provided that the following conditions
8			* are met:
9			* 1. Redistributions of source code must retain the above copyright
10			* notice, this list of conditions and the following disclaimer.
11			* 2. Redistributions in binary form must reproduce the above copyright
12			* notice, this list of conditions and the following disclaimer in the
13			* documentation and/or other materials provided with the distribution.
14			* 3. Neither the name of the University nor the names of its contributors
15			* may be used to endorse or promote products derived from this software
16			* without specific prior written permission.
17			*
18			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28			* SUCH DAMAGE.
29			*/
30
31			#include <sys/types.h>
32			#include <sys/uio.h>
33			#include <sys/stat.h>
34
35			#include <errno.h>
36			#include <limits.h>
37			#include <fstab.h>
38			#include <stdio.h>
39			#include <stdlib.h>
40			#include <string.h>
41			#include <unistd.h>
42
43			static FILE *_fs_fp;
44			static struct fstab _fs_fstab;
45
46			static int fstabscan(void);
47
48			static int
49			fstabscan(void)
50			{
51			char *cp;
52			#define MAXLINELENGTH 1024
53			static char line[MAXLINELENGTH];
54			char subline[MAXLINELENGTH];
55			const char *errstr;
56			char *last;
57			int typexx;
58
59			for (;;) {
60			if (!(cp = fgets(line, sizeof(line), _fs_fp)))
61			return(0);
62			/* OLD_STYLE_FSTAB */
63			if (!strpbrk(cp, " \t")) {
64			_fs_fstab.fs_spec = strtok_r(cp, ":\n", &last);
65			if (!_fs_fstab.fs_spec \|\| *_fs_fstab.fs_spec == '#')
66			continue;
67			_fs_fstab.fs_file = strtok_r(NULL, ":\n", &last);
68			_fs_fstab.fs_type = strtok_r(NULL, ":\n", &last);
69			if (_fs_fstab.fs_type) {
70			if (!strcmp(_fs_fstab.fs_type, FSTAB_XX))
71			continue;
72			_fs_fstab.fs_mntops = _fs_fstab.fs_type;
73			_fs_fstab.fs_vfstype =
74			strcmp(_fs_fstab.fs_type, FSTAB_SW) ?
75			"ufs" : "swap";
76			if ((cp = strtok_r(NULL, ":\n", &last))) {
77			_fs_fstab.fs_freq = strtonum(cp, 0,
78			INT_MAX, &errstr);
79			if (errstr)
80			goto bad;
81			if ((cp = strtok_r(NULL,
82			":\n", &last))) {
83			_fs_fstab.fs_passno =
84			strtonum(cp, 0, INT_MAX,
85			&errstr);
86			if (errstr)
87			goto bad;
88			return(1);
89			}
90			}
91			}
92			goto bad;
93			}
94			/* OLD_STYLE_FSTAB */
95			_fs_fstab.fs_spec = strtok_r(cp, " \t\n", &last);
96			if (!_fs_fstab.fs_spec \|\| *_fs_fstab.fs_spec == '#')
97			continue;
98			_fs_fstab.fs_file = strtok_r(NULL, " \t\n", &last);
99			_fs_fstab.fs_vfstype = strtok_r(NULL, " \t\n", &last);
100			_fs_fstab.fs_mntops = strtok_r(NULL, " \t\n", &last);
101			if (_fs_fstab.fs_mntops == NULL)
102			goto bad;
103			_fs_fstab.fs_freq = 0;
104			_fs_fstab.fs_passno = 0;
105			if ((cp = strtok_r(NULL, " \t\n", &last)) != NULL) {
106			_fs_fstab.fs_freq = strtonum(cp, 0, INT_MAX, &errstr);
107			if (errstr)
108			goto bad;
109			if ((cp = strtok_r(NULL, " \t\n", &last)) != NULL) {
110			_fs_fstab.fs_passno = strtonum(cp, 0, INT_MAX,
111			&errstr);
112			if (errstr)
113			goto bad;
114			}
115			}
116			strlcpy(subline, _fs_fstab.fs_mntops, sizeof subline);
117			for (typexx = 0, cp = strtok_r(subline, ",", &last); cp;
118			cp = strtok_r(NULL, ",", &last)) {
119			if (strlen(cp) != 2)
120			continue;
121			if (!strcmp(cp, FSTAB_RW)) {
122			_fs_fstab.fs_type = FSTAB_RW;
123			break;
124			}
125			if (!strcmp(cp, FSTAB_RQ)) {
126			_fs_fstab.fs_type = FSTAB_RQ;
127			break;
128			}
129			if (!strcmp(cp, FSTAB_RO)) {
130			_fs_fstab.fs_type = FSTAB_RO;
131			break;
132			}
133			if (!strcmp(cp, FSTAB_SW)) {
134			_fs_fstab.fs_type = FSTAB_SW;
135			break;
136			}
137			if (!strcmp(cp, FSTAB_XX)) {
138			_fs_fstab.fs_type = FSTAB_XX;
139			typexx++;
140			break;
141			}
142			}
143			if (typexx)
144			continue;
145			if (cp != NULL)
146			return(1);
147
148			bad: /* We silently ignore all bogus lines */
149			;
150			}
151			}
152
153			struct fstab *
154			getfsent(void)
155			{
156			if ((!_fs_fp && !setfsent()) \|\| !fstabscan())
157			return(NULL);
158			return(&_fs_fstab);
159			}
160
161			struct fstab *
162			getfsspec(const char *name)
163			{
164			if (setfsent())
165			while (fstabscan())
166			if (!strcmp(_fs_fstab.fs_spec, name))
167			return(&_fs_fstab);
168			return(NULL);
169			}
170
171			struct fstab *
172			getfsfile(const char *name)
173			{
174			if (setfsent())
175			while (fstabscan())
176			if (!strcmp(_fs_fstab.fs_file, name))
177			return(&_fs_fstab);
178			return(NULL);
179			}
180
181			int
182			setfsent(void)
183			{
184			struct stat sbuf;
185
186			if (_fs_fp) {
187			rewind(_fs_fp);
188			return(1);
189			}
190
191			if (stat(_PATH_FSTAB, &sbuf) != 0)
192			goto fail;
193			if ((sbuf.st_size == 0) \|\| ((sbuf.st_mode & S_IFMT) != S_IFREG)) {
194			errno = EFTYPE;
195			goto fail;
196			}
197
198			if ((_fs_fp = fopen(_PATH_FSTAB, "re")))
199			return(1);
200
201			fail:
202			return(0);
203			}
204			DEF_WEAK(setfsent);
205
206			void
207			endfsent(void)
208			{
209			if (_fs_fp) {
210			(void)fclose(_fs_fp);
211			_fs_fp = NULL;
212			}
213			}