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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	sbin/mount_msdos/mount_msdos.c	Lines:	0	72	0.0 %
Date:	2017-11-13	Branches:	0	46	0.0 %


/*	$OpenBSD: mount_msdos.c,v 1.33 2016/05/21 19:14:02 jmc Exp $	*/
/*	$NetBSD: mount_msdos.c,v 1.16 1996/10/24 00:12:50 cgd Exp $	*/

/*
 * Copyright (c) 1994 Christopher G. Demetriou
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Christopher G. Demetriou.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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/mount.h>
#include <sys/stat.h>
#include <ctype.h>
#include <err.h>
#include <grp.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#include <errno.h>

#include "mntopts.h"

const struct mntopt mopts[] = {
	MOPT_STDOPTS,
	MOPT_UPDATE,
	MOPT_ASYNC,
	{ NULL }
};

gid_t	a_gid(char *);
uid_t	a_uid(char *);
mode_t	a_mask(char *);
void	usage(void);

int
main(int argc, char **argv)
{
	struct msdosfs_args args;
	struct stat sb;
	int c, mntflags, set_gid, set_uid, set_mask;
	char *dev, dir[PATH_MAX];
	char *errcause;

	mntflags = set_gid = set_uid = set_mask = 0;
	(void)memset(&args, '\0', sizeof(args));

	while ((c = getopt(argc, argv, "sl9u:g:m:o:")) != -1) {
		switch (c) {
		case 's':
			args.flags |= MSDOSFSMNT_SHORTNAME;
			break;
		case 'l':
			args.flags |= MSDOSFSMNT_LONGNAME;
			break;
		case '9':
			args.flags |= MSDOSFSMNT_NOWIN95;
			break;
		case 'u':
			args.uid = a_uid(optarg);
			set_uid = 1;
			break;
		case 'g':
			args.gid = a_gid(optarg);
			set_gid = 1;
			break;
		case 'm':
			args.mask = a_mask(optarg);
			set_mask = 1;
			break;
		case 'o':
			getmntopts(optarg, mopts, &mntflags);
			break;
		case '?':
		default:
			usage();
			break;
		}
	}

	if (optind + 2 != argc)
		usage();

	dev = argv[optind];
	if (realpath(argv[optind + 1], dir) == NULL)
		err(1, "realpath %s", argv[optind + 1]);

	args.fspec = dev;
	args.export_info.ex_root = -2;	/* unchecked anyway on DOS fs */
	if (mntflags & MNT_RDONLY)
		args.export_info.ex_flags = MNT_EXRDONLY;
	else
		args.export_info.ex_flags = 0;
	if (!set_gid || !set_uid || !set_mask) {
		if (stat(dir, &sb) == -1)
			err(1, "stat %s", dir);

		if (!set_uid)
			args.uid = sb.st_uid;
		if (!set_gid)
			args.gid = sb.st_gid;
		if (!set_mask)
			args.mask = sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
	}

	if (mount(MOUNT_MSDOS, dir, mntflags, &args) < 0) {
		switch (errno) {
		case EOPNOTSUPP:
			errcause = "filesystem not supported by kernel";
			break;
		case EMFILE:
			errcause = "mount table full";
			break;
		case EINVAL:
			errcause =
			    "not an MSDOS filesystem";
			break;
		default:
			errcause = strerror(errno);
			break;
		}
		errx(1, "%s on %s: %s", args.fspec, dir, errcause);
	}

	exit (0);
}

gid_t
a_gid(char *s)
{
	struct group *gr;
	const char *errstr;
	gid_t gid;

	if ((gr = getgrnam(s)) != NULL)
		return gr->gr_gid;
	gid = strtonum(s, 0, GID_MAX, &errstr);
	if (errstr)
		errx(1, "group is %s: %s", errstr, s);
	return (gid);
}

uid_t
a_uid(char *s)
{
	struct passwd *pw;
	const char *errstr;
	uid_t uid;

	if ((pw = getpwnam(s)) != NULL)
		return pw->pw_uid;
	uid = strtonum(s, 0, UID_MAX, &errstr);
	if (errstr)
		errx(1, "user is %s: %s", errstr, s);
	return (uid);
}

mode_t
a_mask(char *s)
{
	int done, rv;
	char *ep;

	done = 0;
	if (*s >= '0' && *s <= '7') {
		done = 1;
		rv = strtol(optarg, &ep, 8);
	}
	if (!done || rv < 0 || *ep)
		errx(1, "invalid file mode: %s", s);
	return (rv);
}

void
usage(void)
{

	fprintf(stderr,
	    "usage: mount_msdos [-9ls] [-g gid] [-m mask] [-o options] [-u uid] special node\n");
	exit(1);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: mount_msdos.c,v 1.33 2016/05/21 19:14:02 jmc Exp $ */
2			/* $NetBSD: mount_msdos.c,v 1.16 1996/10/24 00:12:50 cgd Exp $ */
3
4			/*
5			* Copyright (c) 1994 Christopher G. Demetriou
6			* 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. All advertising materials mentioning features or use of this software
17			* must display the following acknowledgement:
18			* This product includes software developed by Christopher G. Demetriou.
19			* 4. The name of the author may not be used to endorse or promote products
20			* derived from this software without specific prior written permission
21			*
22			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23			* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24			* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25			* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26			* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27			* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28			* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29			* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30			* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31			* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32			*/
33
34			#include <sys/types.h>
35			#include <sys/mount.h>
36			#include <sys/stat.h>
37			#include <ctype.h>
38			#include <err.h>
39			#include <grp.h>
40			#include <pwd.h>
41			#include <stdio.h>
42			#include <stdlib.h>
43			#include <string.h>
44			#include <unistd.h>
45			#include <limits.h>
46			#include <errno.h>
47
48			#include "mntopts.h"
49
50			const struct mntopt mopts[] = {
51			MOPT_STDOPTS,
52			MOPT_UPDATE,
53			MOPT_ASYNC,
54			{ NULL }
55			};
56
57			gid_t a_gid(char *);
58			uid_t a_uid(char *);
59			mode_t a_mask(char *);
60			void usage(void);
61
62			int
63			main(int argc, char **argv)
64			{
65			struct msdosfs_args args;
66			struct stat sb;
67			int c, mntflags, set_gid, set_uid, set_mask;
68			char *dev, dir[PATH_MAX];
69			char *errcause;
70
71			mntflags = set_gid = set_uid = set_mask = 0;
72			(void)memset(&args, '\0', sizeof(args));
73
74			while ((c = getopt(argc, argv, "sl9u:g:m:o:")) != -1) {
75			switch (c) {
76			case 's':
77			args.flags \|= MSDOSFSMNT_SHORTNAME;
78			break;
79			case 'l':
80			args.flags \|= MSDOSFSMNT_LONGNAME;
81			break;
82			case '9':
83			args.flags \|= MSDOSFSMNT_NOWIN95;
84			break;
85			case 'u':
86			args.uid = a_uid(optarg);
87			set_uid = 1;
88			break;
89			case 'g':
90			args.gid = a_gid(optarg);
91			set_gid = 1;
92			break;
93			case 'm':
94			args.mask = a_mask(optarg);
95			set_mask = 1;
96			break;
97			case 'o':
98			getmntopts(optarg, mopts, &mntflags);
99			break;
100			case '?':
101			default:
102			usage();
103			break;
104			}
105			}
106
107			if (optind + 2 != argc)
108			usage();
109
110			dev = argv[optind];
111			if (realpath(argv[optind + 1], dir) == NULL)
112			err(1, "realpath %s", argv[optind + 1]);
113
114			args.fspec = dev;
115			args.export_info.ex_root = -2; /* unchecked anyway on DOS fs */
116			if (mntflags & MNT_RDONLY)
117			args.export_info.ex_flags = MNT_EXRDONLY;
118			else
119			args.export_info.ex_flags = 0;
120			if (!set_gid \|\| !set_uid \|\| !set_mask) {
121			if (stat(dir, &sb) == -1)
122			err(1, "stat %s", dir);
123
124			if (!set_uid)
125			args.uid = sb.st_uid;
126			if (!set_gid)
127			args.gid = sb.st_gid;
128			if (!set_mask)
129			args.mask = sb.st_mode & (S_IRWXU \| S_IRWXG \| S_IRWXO);
130			}
131
132			if (mount(MOUNT_MSDOS, dir, mntflags, &args) < 0) {
133			switch (errno) {
134			case EOPNOTSUPP:
135			errcause = "filesystem not supported by kernel";
136			break;
137			case EMFILE:
138			errcause = "mount table full";
139			break;
140			case EINVAL:
141			errcause =
142			"not an MSDOS filesystem";
143			break;
144			default:
145			errcause = strerror(errno);
146			break;
147			}
148			errx(1, "%s on %s: %s", args.fspec, dir, errcause);
149			}
150
151			exit (0);
152			}
153
154			gid_t
155			a_gid(char *s)
156			{
157			struct group *gr;
158			const char *errstr;
159			gid_t gid;
160
161			if ((gr = getgrnam(s)) != NULL)
162			return gr->gr_gid;
163			gid = strtonum(s, 0, GID_MAX, &errstr);
164			if (errstr)
165			errx(1, "group is %s: %s", errstr, s);
166			return (gid);
167			}
168
169			uid_t
170			a_uid(char *s)
171			{
172			struct passwd *pw;
173			const char *errstr;
174			uid_t uid;
175
176			if ((pw = getpwnam(s)) != NULL)
177			return pw->pw_uid;
178			uid = strtonum(s, 0, UID_MAX, &errstr);
179			if (errstr)
180			errx(1, "user is %s: %s", errstr, s);
181			return (uid);
182			}
183
184			mode_t
185			a_mask(char *s)
186			{
187			int done, rv;
188			char *ep;
189
190			done = 0;
191			if (s >= '0' && s <= '7') {
192			done = 1;
193			rv = strtol(optarg, &ep, 8);
194			}
195			if (!done \|\| rv < 0 \|\| *ep)
196			errx(1, "invalid file mode: %s", s);
197			return (rv);
198			}
199
200			void
201			usage(void)
202			{
203
204			fprintf(stderr,
205			"usage: mount_msdos [-9ls] [-g gid] [-m mask] [-o options] [-u uid] special node\n");
206			exit(1);
207			}