2 * Copyright (c) 1997-1999 Erez Zadok
3 * Copyright (c) 1989 Jan-Simon Pendry
4 * Copyright (c) 1989 Imperial College of Science, Technology & Medicine
5 * Copyright (c) 1989 The Regents of the University of California.
8 * This code is derived from software contributed to Berkeley by
9 * Jan-Simon Pendry at Imperial College, London.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgment:
21 * This product includes software developed by the University of
22 * California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
41 * $Id: srvr_amfs_auto.c,v 1.2 1999/01/10 21:53:53 ezk Exp $
46 * Automount FS server ("localhost") modeling
51 #endif /* HAVE_CONFIG_H */
56 qelem amfs_auto_srvr_list = {&amfs_auto_srvr_list, &amfs_auto_srvr_list};
59 static fserver *localhost;
63 * Find an nfs server for the local host
66 find_amfs_auto_srvr(mntfs *mf)
68 fserver *fs = localhost;
71 fs = ALLOC(struct fserver);
73 fs->fs_host = strdup("localhost");
77 fs->fs_flags = FSF_VALID;
78 fs->fs_type = "local";
82 ins_que(&fs->fs_q, &amfs_auto_srvr_list);
84 srvrlog(fs, "starts up");
94 /*****************************************************************************
95 *** GENERIC ROUTINES FOLLOW
96 *****************************************************************************/
99 * Wakeup anything waiting for this server
102 wakeup_srvr(fserver *fs)
104 fs->fs_flags &= ~FSF_WANT;
110 * Called when final ttl of server has expired
113 timeout_srvr(voidp v)
118 * If the reference count is still zero then
119 * we are free to remove this node
121 if (fs->fs_refc == 0) {
123 dlog("Deleting file server %s", fs->fs_host);
125 if (fs->fs_flags & FSF_WANT)
133 * (Possibly) call the private free routine.
135 if (fs->fs_private && fs->fs_prfree)
136 (*fs->fs_prfree) (fs->fs_private);
139 * Free the net address
145 * Free the host name.
150 * Discard the fserver object.
161 free_srvr(fserver *fs)
163 if (--fs->fs_refc == 0) {
165 * The reference count is now zero,
166 * so arrange for this node to be
167 * removed in AM_TTL seconds if no
168 * other mntfs is referencing it.
170 int ttl = (fs->fs_flags & (FSF_DOWN | FSF_ERROR)) ? 19 : AM_TTL;
173 dlog("Last hard reference to file server %s - will timeout in %ds", fs->fs_host, ttl);
176 untimeout(fs->fs_cid);
178 * Turn off pinging - XXX
180 fs->fs_flags &= ~FSF_PINGING;
184 * Keep structure lying around for a while
186 fs->fs_cid = timeout(ttl, timeout_srvr, (voidp) fs);
189 * Mark the fileserver down and invalid again
191 fs->fs_flags &= ~FSF_VALID;
192 fs->fs_flags |= FSF_DOWN;
198 * Make a duplicate fserver reference
201 dup_srvr(fserver *fs)
211 void srvrlog(fserver *fs, char *state)
213 plog(XLOG_INFO, "file server %s type %s %s", fs->fs_host, fs->fs_type, state);