* Copyright (c) 1990 Jan-Simon Pendry
* Copyright (c) 1990 Imperial College of Science, Technology & Medicine
* Copyright (c) 1990 The Regents of the University of California.
* 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
* 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 the University of
* California, Berkeley and its contributors.
* 4. 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
* @(#)info_union.c 5.3 (Berkeley) 5/12/91
* $Id: info_union.c,v 5.2.1.3 91/05/07 22:18:03 jsp Alpha $
* Get info from the system namespace
* NOTE: Cannot handle reads back through the automounter.
* THIS WILL CAUSE A DEADLOCK!
#define DIRENT struct dirent
#define DIRENT struct direct
#define UNION_PREFIX "union:"
* No way to probe - check the map name begins with "union:"
int union_init
P((char *map
, time_t *tp
));
return strncmp(map
, UNION_PREFIX
, UNION_PREFLEN
) == 0 ? 0 : ENOENT
;
int union_search
P((mnt_map
*m
, char *map
, char *key
, char **pval
, time_t *tp
));
int union_search(m
, map
, key
, pval
, tp
)
char *mapd
= strdup(map
+ UNION_PREFLEN
);
char **v
= strsplit(mapd
, ':', '\"');
*pval
= xmalloc(strlen(*p
) + 5);
sprintf(*pval
, "fs:=%s", *p
);
int union_reload
P((mnt_map
*m
, char *map
, void (*fn
)()));
int union_reload(m
, map
, fn
)
char *mapd
= strdup(map
+ UNION_PREFLEN
);
char **v
= strsplit(mapd
, ':', '\"');
* Add fake /defaults entry
(*fn
)(m
, strdup("/defaults"), strdup("type:=link;opts:=nounmount;sublink:=${key}"));
for (dir
= v
; *dir
; dir
++) {
DIR *dirp
= opendir(*dir
);
plog(XLOG_USER
, "Cannot read directory %s: %m", *dir
);
dlog("Reading directory %s...", *dir
);
while (dp
= readdir(dirp
)) {
if (dp
->d_name
[0] == '.' &&
(dp
->d_name
[1] == '\0' ||
(dp
->d_name
[1] == '.' && dp
->d_name
[2] == '\0')))
dlog("... gives %s", dp
->d_name
);
sprintf(val
, "fs:=%s", *dir
);
(*fn
)(m
, strdup(dp
->d_name
), val
);
{ char *val
= xmalloc(strlen(dir
[-1]) + 5);
sprintf(val
, "fs:=%s", dir
[-1]);
(*fn
)(m
, strdup("*"), val
);
#endif /* HAS_UNION_MAPS */