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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/amd/amd/sfs_ops.c	Lines:	0	23	0.0 %
Date:	2017-11-07	Branches:	0	12	0.0 %


/*
 * Copyright (c) 1990 Jan-Simon Pendry
 * Copyright (c) 1990 Imperial College of Science, Technology & Medicine
 * Copyright (c) 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Jan-Simon Pendry at Imperial College, London.
 *
 * 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: @(#)sfs_ops.c	8.1 (Berkeley) 6/6/93
 *	$Id: sfs_ops.c,v 1.6 2016/03/16 15:41:11 krw Exp $
 */

#include "am.h"

#if defined(HAS_SFS) || defined(HAS_SFSX)
#define NEED_SFS_MATCH
#define NEED_SFS_UMOUNT
#endif

/*
 * Symbol-link file system
 */

#ifdef HAS_SFSX
#include <sys/stat.h>
#endif

#ifdef NEED_SFS_MATCH
/*
 * SFS needs a link.
 */
static char *
sfs_match(am_opts *fo)
{
	if (!fo->opt_fs) {
		plog(XLOG_USER, "link: no fs specified");
		return 0;
	}

	/*
	 * Bug report (14/12/89) from Jay Plett <jay@princeton.edu>
	 * If an automount point has the same name as an existing
	 * link type mount Amd hits a race condition and either hangs
	 * or causes a symlink loop.
	 *
	 * If fs begins with a '/' change the opt_fs & opt_sublink
	 * fields so that the fs option doesn't end up pointing at
	 * an existing symlink.
	 *
	 * If sublink is nil then set sublink to fs
	 * else set sublink to fs / sublink
	 *
	 * Finally set fs to ".".
	 */
	if (*fo->opt_fs == '/') {
		char *fullpath;
		char *link = fo->opt_sublink;
		if (link) {
			if (*link == '/')
				fullpath = strdup(link);
			else
				fullpath = str3cat(NULL, fo->opt_fs, "/", link);
		} else {
			fullpath = strdup(fo->opt_fs);
		}

		free(fo->opt_sublink);
		fo->opt_sublink = fullpath;
		fo->opt_fs = str3cat(fo->opt_fs, ".", fullpath, "");
	}

	return strdup(fo->opt_fs);
}
#endif

#ifdef HAS_SFSX
static int
sfsx_mount(am_node *mp)
{
	/*
	 * Check for existence of target.
	 */
	struct stat stb;
	char *ln;

	if (mp->am_link)
		ln = mp->am_link;
	else /* should never occur */
		ln = mp->am_mnt->mf_mount;

	/*
	 * Use lstat, not stat, since we don't
	 * want to know if the ultimate target of
	 * a symlink chain exists, just the first.
	 */
	if (lstat(ln, &stb) < 0)
		return errno;

	return 0;
}
#endif

#ifdef HAS_SFS
static int
sfs_fmount(mntfs *mf)
{
	/*
	 * Wow - this is hard to implement!
	 */

	return 0;
}
#endif

#ifdef NEED_SFS_UMOUNT
static int
sfs_fumount(mntfs *mf)
{
	return 0;
}
#endif

/*
 * Ops structures
 */
#ifdef HAS_SFS
am_ops sfs_ops = {
	"link",
	sfs_match,
	0, /* sfs_init */
	auto_fmount,
	sfs_fmount,
	auto_fumount,
	sfs_fumount,
	efs_lookuppn,
	efs_readdir,
	0, /* sfs_readlink */
	0, /* sfs_mounted */
	0, /* sfs_umounted */
	find_afs_srvr,
#ifdef FLUSH_KERNEL_NAME_CACHE
	FS_UBACKGROUND
#else /* FLUSH_KERNEL_NAME_CACHE */
	0
#endif /* FLUSH_KERNEL_NAME_CACHE */
};

#endif /* HAS_SFS */

#ifdef HAS_SFSX
struct am_ops sfsx_ops = {
	"linkx",
	sfs_match,
	0, /* sfsx_init */
	sfsx_mount,
	0,
	auto_fumount,
	sfs_fumount,
	efs_lookuppn,
	efs_readdir,
	0, /* sfsx_readlink */
	0, /* sfsx_mounted */
	0, /* sfsx_umounted */
	find_afs_srvr,
#ifdef FLUSH_KERNEL_NAME_CACHE
	FS_BACKGROUND
#else /* FLUSH_KERNEL_NAME_CACHE */
	FS_MBACKGROUND
#endif /* FLUSH_KERNEL_NAME_CACHE */
};

#endif /* HAS_SFSX */


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/*
2			* Copyright (c) 1990 Jan-Simon Pendry
3			* Copyright (c) 1990 Imperial College of Science, Technology & Medicine
4			* Copyright (c) 1990, 1993
5			* The Regents of the University of California. All rights reserved.
6			*
7			* This code is derived from software contributed to Berkeley by
8			* Jan-Simon Pendry at Imperial College, London.
9			*
10			* Redistribution and use in source and binary forms, with or without
11			* modification, are permitted provided that the following conditions
12			* are met:
13			* 1. Redistributions of source code must retain the above copyright
14			* notice, this list of conditions and the following disclaimer.
15			* 2. Redistributions in binary form must reproduce the above copyright
16			* notice, this list of conditions and the following disclaimer in the
17			* documentation and/or other materials provided with the distribution.
18			* 3. Neither the name of the University nor the names of its contributors
19			* may be used to endorse or promote products derived from this software
20			* without specific prior written permission.
21			*
22			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32			* SUCH DAMAGE.
33			*
34			* from: @(#)sfs_ops.c 8.1 (Berkeley) 6/6/93
35			* $Id: sfs_ops.c,v 1.6 2016/03/16 15:41:11 krw Exp $
36			*/
37
38			#include "am.h"
39
40			#if defined(HAS_SFS) \|\| defined(HAS_SFSX)
41			#define NEED_SFS_MATCH
42			#define NEED_SFS_UMOUNT
43			#endif
44
45			/*
46			* Symbol-link file system
47			*/
48
49			#ifdef HAS_SFSX
50			#include <sys/stat.h>
51			#endif
52
53			#ifdef NEED_SFS_MATCH
54			/*
55			* SFS needs a link.
56			*/
57			static char *
58			sfs_match(am_opts *fo)
59			{
60			if (!fo->opt_fs) {
61			plog(XLOG_USER, "link: no fs specified");
62			return 0;
63			}
64
65			/*
66			* Bug report (14/12/89) from Jay Plett <jay@princeton.edu>
67			* If an automount point has the same name as an existing
68			* link type mount Amd hits a race condition and either hangs
69			* or causes a symlink loop.
70			*
71			* If fs begins with a '/' change the opt_fs & opt_sublink
72			* fields so that the fs option doesn't end up pointing at
73			* an existing symlink.
74			*
75			* If sublink is nil then set sublink to fs
76			* else set sublink to fs / sublink
77			*
78			* Finally set fs to ".".
79			*/
80			if (*fo->opt_fs == '/') {
81			char *fullpath;
82			char *link = fo->opt_sublink;
83			if (link) {
84			if (*link == '/')
85			fullpath = strdup(link);
86			else
87			fullpath = str3cat(NULL, fo->opt_fs, "/", link);
88			} else {
89			fullpath = strdup(fo->opt_fs);
90			}
91
92			free(fo->opt_sublink);
93			fo->opt_sublink = fullpath;
94			fo->opt_fs = str3cat(fo->opt_fs, ".", fullpath, "");
95			}
96
97			return strdup(fo->opt_fs);
98			}
99			#endif
100
101			#ifdef HAS_SFSX
102			static int
103			sfsx_mount(am_node *mp)
104			{
105			/*
106			* Check for existence of target.
107			*/
108			struct stat stb;
109			char *ln;
110
111			if (mp->am_link)
112			ln = mp->am_link;
113			else /* should never occur */
114			ln = mp->am_mnt->mf_mount;
115
116			/*
117			* Use lstat, not stat, since we don't
118			* want to know if the ultimate target of
119			* a symlink chain exists, just the first.
120			*/
121			if (lstat(ln, &stb) < 0)
122			return errno;
123
124			return 0;
125			}
126			#endif
127
128			#ifdef HAS_SFS
129			static int
130			sfs_fmount(mntfs *mf)
131			{
132			/*
133			* Wow - this is hard to implement!
134			*/
135
136			return 0;
137			}
138			#endif
139
140			#ifdef NEED_SFS_UMOUNT
141			static int
142			sfs_fumount(mntfs *mf)
143			{
144			return 0;
145			}
146			#endif
147
148			/*
149			* Ops structures
150			*/
151			#ifdef HAS_SFS
152			am_ops sfs_ops = {
153			"link",
154			sfs_match,
155			0, /* sfs_init */
156			auto_fmount,
157			sfs_fmount,
158			auto_fumount,
159			sfs_fumount,
160			efs_lookuppn,
161			efs_readdir,
162			0, /* sfs_readlink */
163			0, /* sfs_mounted */
164			0, /* sfs_umounted */
165			find_afs_srvr,
166			#ifdef FLUSH_KERNEL_NAME_CACHE
167			FS_UBACKGROUND
168			#else /* FLUSH_KERNEL_NAME_CACHE */
169			0
170			#endif /* FLUSH_KERNEL_NAME_CACHE */
171			};
172
173			#endif /* HAS_SFS */
174
175			#ifdef HAS_SFSX
176			struct am_ops sfsx_ops = {
177			"linkx",
178			sfs_match,
179			0, /* sfsx_init */
180			sfsx_mount,
181			0,
182			auto_fumount,
183			sfs_fumount,
184			efs_lookuppn,
185			efs_readdir,
186			0, /* sfsx_readlink */
187			0, /* sfsx_mounted */
188			0, /* sfsx_umounted */
189			find_afs_srvr,
190			#ifdef FLUSH_KERNEL_NAME_CACHE
191			FS_BACKGROUND
192			#else /* FLUSH_KERNEL_NAME_CACHE */
193			FS_MBACKGROUND
194			#endif /* FLUSH_KERNEL_NAME_CACHE */
195			};
196
197			#endif /* HAS_SFSX */