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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/amd/amd/ifs_ops.c	Lines:	0	33	0.0 %
Date:	2017-11-07	Branches:	0	12	0.0 %


/*
 * Copyright (c) 1989 Jan-Simon Pendry
 * Copyright (c) 1989 Imperial College of Science, Technology & Medicine
 * Copyright (c) 1989, 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: @(#)ifs_ops.c	8.1 (Berkeley) 6/6/93
 *	$Id: ifs_ops.c,v 1.6 2017/07/28 22:41:10 fcambus Exp $
 */

#include "am.h"

#ifdef HAS_IFS

/*
 * Inheritance file system.
 * This implements a filesystem restart.
 *
 * This is a *gross* hack - it knows far too
 * much about the way other parts of the
 * sytem work.  See restart.c too.
 */
static char not_a_filesystem[] = "Attempting to inherit not-a-filesystem";
/*
 * This should never be called.
 */
static char *
ifs_match(am_opts *fo)
{
	plog(XLOG_FATAL, "ifs_match called!");
	return 0;
}

static int
ifs_init(mntfs *mf)
{
	mntfs *mf_link = (mntfs *) mf->mf_private;
	if (mf_link == 0) {
		plog(XLOG_FATAL, "%s", not_a_filesystem);
		return EINVAL;
	}
#ifdef notdef
	/*
	 * Fill in attribute fields
	 */
	mf_link->mf_fattr.type = NFLNK;
	mf_link->mf_fattr.mode = NFSMODE_LNK | 0777;
	mf_link->mf_fattr.nlink = 1;
	mf_link->mf_fattr.size = MAXPATHLEN / 4;
#endif
	if (mf_link->mf_ops->fs_init)
		return (*mf_link->mf_ops->fs_init)(mf_link);
	return 0;
}

static mntfs *
ifs_inherit(mntfs *mf)
{
	/*
	 * Take the linked mount point and
	 * propagate.
	 */
	mntfs *mf_link = (mntfs *) mf->mf_private;
	if (mf_link == 0) {
		plog(XLOG_FATAL, "%s", not_a_filesystem);
		return 0;	/*XXX*/
	}

	mf_link->mf_fo = mf->mf_fo;
#ifdef notdef
	mf_link->mf_fattr.fileid = mf->mf_fattr.fileid;
#endif /* notdef */

	/*
	 * Discard the old map.
	 * Don't call am_unmounted since this
	 * node was never really mounted in the
	 * first place.
	 */
	mf->mf_private = 0;
	free_mntfs(mf);
	/*
	 * Free the dangling reference
	 * to the mount link.
	 */
	free_mntfs(mf_link);
	/*
	 * Get a hold of the other entry
	 */
	mf_link->mf_flags &= ~MFF_RESTART;

	/* Say what happened */
	plog(XLOG_INFO, "restarting %s on %s", mf_link->mf_info, mf_link->mf_mount);

	return mf_link;
}

static int
ifs_mount(am_node *mp)
{
	mntfs *newmf = ifs_inherit(mp->am_mnt);
	if (newmf) {
		mp->am_mnt = newmf;
		/*
		 * XXX - must do the am_mounted call here
		 */
		if (newmf->mf_ops->fs_flags & FS_MBACKGROUND)
			am_mounted(mp);

		new_ttl(mp);
		return 0;
	}
	return EINVAL;
}

static int
ifs_fmount(mntfs *mf)
{
	am_node *mp = find_mf(mf);
	if (mp)
		return ifs_mount(mp);
	return ifs_inherit(mf) ? 0 : EINVAL;
}

static int
ifs_fumount(mntfs *mf)
{
	/*
	 * Always succeed
	 */
	return 0;
}

/*
 * Ops structure
 */
am_ops ifs_ops = {
	"inherit",
	ifs_match,
	ifs_init,
	ifs_mount,
	ifs_fmount,
	auto_fumount,
	ifs_fumount,
	efs_lookuppn,
	efs_readdir,
	0, /* ifs_readlink */
	0, /* ifs_mounted */
	0, /* ifs_umounted */
	find_afs_srvr,
	FS_DISCARD
};

#endif /* HAS_IFS */


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/*
2			* Copyright (c) 1989 Jan-Simon Pendry
3			* Copyright (c) 1989 Imperial College of Science, Technology & Medicine
4			* Copyright (c) 1989, 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: @(#)ifs_ops.c 8.1 (Berkeley) 6/6/93
35			* $Id: ifs_ops.c,v 1.6 2017/07/28 22:41:10 fcambus Exp $
36			*/
37
38			#include "am.h"
39
40			#ifdef HAS_IFS
41
42			/*
43			* Inheritance file system.
44			* This implements a filesystem restart.
45			*
46			* This is a gross hack - it knows far too
47			* much about the way other parts of the
48			* sytem work. See restart.c too.
49			*/
50			static char not_a_filesystem[] = "Attempting to inherit not-a-filesystem";
51			/*
52			* This should never be called.
53			*/
54			static char *
55			ifs_match(am_opts *fo)
56			{
57			plog(XLOG_FATAL, "ifs_match called!");
58			return 0;
59			}
60
61			static int
62			ifs_init(mntfs *mf)
63			{
64			mntfs mf_link = (mntfs ) mf->mf_private;
65			if (mf_link == 0) {
66			plog(XLOG_FATAL, "%s", not_a_filesystem);
67			return EINVAL;
68			}
69			#ifdef notdef
70			/*
71			* Fill in attribute fields
72			*/
73			mf_link->mf_fattr.type = NFLNK;
74			mf_link->mf_fattr.mode = NFSMODE_LNK \| 0777;
75			mf_link->mf_fattr.nlink = 1;
76			mf_link->mf_fattr.size = MAXPATHLEN / 4;
77			#endif
78			if (mf_link->mf_ops->fs_init)
79			return (*mf_link->mf_ops->fs_init)(mf_link);
80			return 0;
81			}
82
83			static mntfs *
84			ifs_inherit(mntfs *mf)
85			{
86			/*
87			* Take the linked mount point and
88			* propagate.
89			*/
90			mntfs mf_link = (mntfs ) mf->mf_private;
91			if (mf_link == 0) {
92			plog(XLOG_FATAL, "%s", not_a_filesystem);
93			return 0; /XXX/
94			}
95
96			mf_link->mf_fo = mf->mf_fo;
97			#ifdef notdef
98			mf_link->mf_fattr.fileid = mf->mf_fattr.fileid;
99			#endif /* notdef */
100
101			/*
102			* Discard the old map.
103			* Don't call am_unmounted since this
104			* node was never really mounted in the
105			* first place.
106			*/
107			mf->mf_private = 0;
108			free_mntfs(mf);
109			/*
110			* Free the dangling reference
111			* to the mount link.
112			*/
113			free_mntfs(mf_link);
114			/*
115			* Get a hold of the other entry
116			*/
117			mf_link->mf_flags &= ~MFF_RESTART;
118
119			/* Say what happened */
120			plog(XLOG_INFO, "restarting %s on %s", mf_link->mf_info, mf_link->mf_mount);
121
122			return mf_link;
123			}
124
125			static int
126			ifs_mount(am_node *mp)
127			{
128			mntfs *newmf = ifs_inherit(mp->am_mnt);
129			if (newmf) {
130			mp->am_mnt = newmf;
131			/*
132			* XXX - must do the am_mounted call here
133			*/
134			if (newmf->mf_ops->fs_flags & FS_MBACKGROUND)
135			am_mounted(mp);
136
137			new_ttl(mp);
138			return 0;
139			}
140			return EINVAL;
141			}
142
143			static int
144			ifs_fmount(mntfs *mf)
145			{
146			am_node *mp = find_mf(mf);
147			if (mp)
148			return ifs_mount(mp);
149			return ifs_inherit(mf) ? 0 : EINVAL;
150			}
151
152			static int
153			ifs_fumount(mntfs *mf)
154			{
155			/*
156			* Always succeed
157			*/
158			return 0;
159			}
160
161			/*
162			* Ops structure
163			*/
164			am_ops ifs_ops = {
165			"inherit",
166			ifs_match,
167			ifs_init,
168			ifs_mount,
169			ifs_fmount,
170			auto_fumount,
171			ifs_fumount,
172			efs_lookuppn,
173			efs_readdir,
174			0, /* ifs_readlink */
175			0, /* ifs_mounted */
176			0, /* ifs_umounted */
177			find_afs_srvr,
178			FS_DISCARD
179			};
180
181			#endif /* HAS_IFS */