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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/amd/amd/srvr_afs.c	Lines:	0	40	0.0 %
Date:	2017-11-13	Branches:	0	14	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: @(#)srvr_afs.c	8.1 (Berkeley) 6/6/93
 *	$Id: srvr_afs.c,v 1.8 2015/12/05 21:15:01 mmcc Exp $
 */

/*
 * Automount FS server ("localhost") modeling
 */

#include "am.h"

extern qelem afs_srvr_list;
qelem afs_srvr_list = { &afs_srvr_list, &afs_srvr_list };

static fserver *localhost;

/*
 * Find an nfs server for the local host
 */
fserver *
find_afs_srvr(mntfs *mf)
{
	fserver *fs = localhost;

	if (!fs) {
		fs = ALLOC(fserver);
		fs->fs_refc = 0;
		fs->fs_host = strdup("localhost");
		fs->fs_ip = 0;
		fs->fs_cid = 0;
		fs->fs_pinger = 0;
		fs->fs_flags = FSF_VALID;
		fs->fs_type = "local";
		fs->fs_private = 0;
		fs->fs_prfree = 0;

		ins_que(&fs->fs_q, &afs_srvr_list);

		srvrlog(fs, "starts up");

		localhost = fs;
	}

	fs->fs_refc++;

	return fs;
}

/*------------------------------------------------------------------*/
		/* Generic routines follow */

/*
 * Wakeup anything waiting for this server
 */
void
wakeup_srvr(fserver *fs)
{
	fs->fs_flags &= ~FSF_WANT;
	wakeup(fs);
}

/*
 * Called when final ttl of server has expired
 */
static void
timeout_srvr(void *arg)
{
	fserver *fs = arg;

	/*
	 * If the reference count is still zero then
	 * we are free to remove this node
	 */
	if (fs->fs_refc == 0) {
#ifdef DEBUG
		dlog("Deleting file server %s", fs->fs_host);
#endif /* DEBUG */
		if (fs->fs_flags & FSF_WANT)
			wakeup_srvr(fs);

		/*
		 * Remove from queue.
		 */
		rem_que(&fs->fs_q);
		/*
		 * (Possibly) call the private free routine.
		 */
		if (fs->fs_private && fs->fs_prfree)
			(*fs->fs_prfree)(fs->fs_private);

		/*
		 * Free the net address
		 */
		free(fs->fs_ip);

		/*
		 * Free the host name.
		 */
		free(fs->fs_host);

		/*
		 * Discard the fserver object.
		 */
		free(fs);
	}
}

/*
 * Free a file server
 */
void
free_srvr(fserver *fs)
{
	if (--fs->fs_refc == 0) {
		/*
		 * The reference count is now zero,
		 * so arrange for this node to be
		 * removed in AM_TTL seconds if no
		 * other mntfs is referencing it.
		 */
		int ttl = (fs->fs_flags & (FSF_DOWN|FSF_ERROR)) ? 19 : AM_TTL;
#ifdef DEBUG
		dlog("Last hard reference to file server %s - will timeout in %ds", fs->fs_host, ttl);
#endif /* DEBUG */
		if (fs->fs_cid) {
			untimeout(fs->fs_cid);
			/*
			 * Turn off pinging - XXX
			 */
			fs->fs_flags &= ~FSF_PINGING;
		}
		/*
		 * Keep structure lying around for a while
		 */
		fs->fs_cid = timeout(ttl, timeout_srvr, fs);
		/*
		 * Mark the fileserver down and invalid again
		 */
		fs->fs_flags &= ~FSF_VALID;
		fs->fs_flags |= FSF_DOWN;
	}
}

/*
 * Make a duplicate fserver reference
 */
fserver *
dup_srvr(fserver *fs)
{
	fs->fs_refc++;
	return fs;
}

/*
 * Log state change
 */
void srvrlog(fserver *fs, char *state)
{
	plog(XLOG_INFO, "file server %s type %s %s", fs->fs_host, fs->fs_type, state);
}


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: @(#)srvr_afs.c 8.1 (Berkeley) 6/6/93
35			* $Id: srvr_afs.c,v 1.8 2015/12/05 21:15:01 mmcc Exp $
36			*/
37
38			/*
39			* Automount FS server ("localhost") modeling
40			*/
41
42			#include "am.h"
43
44			extern qelem afs_srvr_list;
45			qelem afs_srvr_list = { &afs_srvr_list, &afs_srvr_list };
46
47			static fserver *localhost;
48
49			/*
50			* Find an nfs server for the local host
51			*/
52			fserver *
53			find_afs_srvr(mntfs *mf)
54			{
55			fserver *fs = localhost;
56
57			if (!fs) {
58			fs = ALLOC(fserver);
59			fs->fs_refc = 0;
60			fs->fs_host = strdup("localhost");
61			fs->fs_ip = 0;
62			fs->fs_cid = 0;
63			fs->fs_pinger = 0;
64			fs->fs_flags = FSF_VALID;
65			fs->fs_type = "local";
66			fs->fs_private = 0;
67			fs->fs_prfree = 0;
68
69			ins_que(&fs->fs_q, &afs_srvr_list);
70
71			srvrlog(fs, "starts up");
72
73			localhost = fs;
74			}
75
76			fs->fs_refc++;
77
78			return fs;
79			}
80
81			/------------------------------------------------------------------/
82			/* Generic routines follow */
83
84			/*
85			* Wakeup anything waiting for this server
86			*/
87			void
88			wakeup_srvr(fserver *fs)
89			{
90			fs->fs_flags &= ~FSF_WANT;
91			wakeup(fs);
92			}
93
94			/*
95			* Called when final ttl of server has expired
96			*/
97			static void
98			timeout_srvr(void *arg)
99			{
100			fserver *fs = arg;
101
102			/*
103			* If the reference count is still zero then
104			* we are free to remove this node
105			*/
106			if (fs->fs_refc == 0) {
107			#ifdef DEBUG
108			dlog("Deleting file server %s", fs->fs_host);
109			#endif /* DEBUG */
110			if (fs->fs_flags & FSF_WANT)
111			wakeup_srvr(fs);
112
113			/*
114			* Remove from queue.
115			*/
116			rem_que(&fs->fs_q);
117			/*
118			* (Possibly) call the private free routine.
119			*/
120			if (fs->fs_private && fs->fs_prfree)
121			(*fs->fs_prfree)(fs->fs_private);
122
123			/*
124			* Free the net address
125			*/
126			free(fs->fs_ip);
127
128			/*
129			* Free the host name.
130			*/
131			free(fs->fs_host);
132
133			/*
134			* Discard the fserver object.
135			*/
136			free(fs);
137			}
138			}
139
140			/*
141			* Free a file server
142			*/
143			void
144			free_srvr(fserver *fs)
145			{
146			if (--fs->fs_refc == 0) {
147			/*
148			* The reference count is now zero,
149			* so arrange for this node to be
150			* removed in AM_TTL seconds if no
151			* other mntfs is referencing it.
152			*/
153			int ttl = (fs->fs_flags & (FSF_DOWN\|FSF_ERROR)) ? 19 : AM_TTL;
154			#ifdef DEBUG
155			dlog("Last hard reference to file server %s - will timeout in %ds", fs->fs_host, ttl);
156			#endif /* DEBUG */
157			if (fs->fs_cid) {
158			untimeout(fs->fs_cid);
159			/*
160			* Turn off pinging - XXX
161			*/
162			fs->fs_flags &= ~FSF_PINGING;
163			}
164			/*
165			* Keep structure lying around for a while
166			*/
167			fs->fs_cid = timeout(ttl, timeout_srvr, fs);
168			/*
169			* Mark the fileserver down and invalid again
170			*/
171			fs->fs_flags &= ~FSF_VALID;
172			fs->fs_flags \|= FSF_DOWN;
173			}
174			}
175
176			/*
177			* Make a duplicate fserver reference
178			*/
179			fserver *
180			dup_srvr(fserver *fs)
181			{
182			fs->fs_refc++;
183			return fs;
184			}
185
186			/*
187			* Log state change
188			*/
189			void srvrlog(fserver fs, char state)
190			{
191			plog(XLOG_INFO, "file server %s type %s %s", fs->fs_host, fs->fs_type, state);
192			}