]>
git.wh0rd.org - dump.git/blob - restore/utilities.c
2 * Ported to Linux's Second Extended File System as part of the
3 * dump and restore backup suit
4 * Remy Card <card@Linux.EU.Org>, 1994-1997
5 * Stelian Pop <pop@cybercable.fr>, 1999
10 * Copyright (c) 1983, 1993
11 * The Regents of the University of California. All rights reserved.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 * must display the following acknowledgement:
23 * This product includes software developed by the University of
24 * California, Berkeley and its contributors.
25 * 4. Neither the name of the University nor the names of its contributors
26 * may be used to endorse or promote products derived from this software
27 * without specific prior written permission.
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
41 * $Id: utilities.c,v 1.5 1999/10/11 13:31:14 stelian Exp $
44 #include <sys/param.h>
49 #include <linux/ext2_fs.h>
50 #include <bsdcompat.h>
52 #include <ufs/ufs/dinode.h>
53 #include <ufs/ufs/dir.h>
54 #endif /* __linux__ */
57 #include <compaterr.h>
63 #include <ext2fs/ext2fs.h>
70 * Insure that all the components of a pathname exist.
79 start
= strchr(name
, '/');
82 for (cp
= start
; *cp
!= '\0'; cp
++) {
86 ep
= lookupname(name
);
88 /* Safe; we know the pathname exists in the dump. */
89 ep
= addentry(name
, pathsearch(name
)->d_ino
, NODE
);
92 ep
->e_flags
|= NEW
|KEEP
;
98 * Change a name to a unique temporary name.
101 mktempname(struct entry
*ep
)
103 char oldname
[MAXPATHLEN
];
105 if (ep
->e_flags
& TMPNAME
)
106 badentry(ep
, "mktempname: called with TMPNAME");
107 ep
->e_flags
|= TMPNAME
;
108 (void) strcpy(oldname
, myname(ep
));
109 freename(ep
->e_name
);
110 ep
->e_name
= savename(gentempname(ep
));
111 ep
->e_namlen
= strlen(ep
->e_name
);
112 renameit(oldname
, myname(ep
));
116 * Generate a temporary name for an entry.
119 gentempname(struct entry
*ep
)
121 static char name
[MAXPATHLEN
];
125 for (np
= lookupino(ep
->e_ino
);
126 np
!= NULL
&& np
!= ep
; np
= np
->e_links
)
129 badentry(ep
, "not on ino list");
130 (void) snprintf(name
, sizeof(name
), "%s%ld%lu", TMPHDR
, i
, (unsigned long)ep
->e_ino
);
135 * Rename a file or directory.
138 renameit(char *from
, char *to
)
140 if (!Nflag
&& rename(from
, to
) < 0) {
141 warn("cannot rename %s to %s", from
, to
);
144 Vprintf(stdout
, "rename %s to %s\n", from
, to
);
148 * Create a new node (directory).
151 newnode(struct entry
*np
)
154 if (np
->e_type
!= NODE
)
155 badentry(np
, "newnode: not a node");
157 if (command
== 'C') return;
159 if (!Nflag
&& mkdir(cp
, 0777) < 0 && !uflag
) {
160 np
->e_flags
|= EXISTED
;
164 Vprintf(stdout
, "Make node %s\n", cp
);
168 * Remove an old node (directory).
171 removenode(struct entry
*ep
)
175 if (ep
->e_type
!= NODE
)
176 badentry(ep
, "removenode: not a node");
177 if (ep
->e_entries
!= NULL
)
178 badentry(ep
, "removenode: non-empty directory");
179 ep
->e_flags
|= REMOVED
;
180 ep
->e_flags
&= ~TMPNAME
;
182 if (!Nflag
&& rmdir(cp
) < 0) {
186 Vprintf(stdout
, "Remove node %s\n", cp
);
193 removeleaf(struct entry
*ep
)
197 if (command
== 'C') return;
199 if (ep
->e_type
!= LEAF
)
200 badentry(ep
, "removeleaf: not a leaf");
201 ep
->e_flags
|= REMOVED
;
202 ep
->e_flags
&= ~TMPNAME
;
204 if (!Nflag
&& unlink(cp
) < 0) {
208 Vprintf(stdout
, "Remove leaf %s\n", cp
);
215 linkit(char *existing
, char *new, int type
)
218 /* if we want to unlink first, do it now so *link() won't fail */
222 if (type
== SYMLINK
) {
223 if (!Nflag
&& symlink(existing
, new) < 0) {
224 warn("cannot create symbolic link %s->%s",
228 } else if (type
== HARDLINK
) {
231 if (!Nflag
&& (ret
= link(existing
, new)) < 0) {
237 * Most likely, the schg flag is set. Clear the
238 * flags and try again.
240 if (stat(existing
, &s
) == 0 && s
.st_flags
!= 0 &&
241 chflags(existing
, 0) == 0) {
242 ret
= link(existing
, new);
243 chflags(existing
, s
.st_flags
);
247 warn("warning: cannot create hard link %s->%s",
253 panic("linkit: unknown type %d\n", type
);
256 Vprintf(stdout
, "Create %s link %s->%s\n",
257 type
== SYMLINK
? "symbolic" : "hard", new, existing
);
266 addwhiteout(char *name
)
269 if (!Nflag
&& mknod(name
, S_IFWHT
, 0) < 0) {
270 warn("cannot create whiteout %s", name
);
273 Vprintf(stdout
, "Create whiteout %s\n", name
);
281 delwhiteout(struct entry
*ep
)
285 if (ep
->e_type
!= LEAF
)
286 badentry(ep
, "delwhiteout: not a leaf");
287 ep
->e_flags
|= REMOVED
;
288 ep
->e_flags
&= ~TMPNAME
;
290 if (!Nflag
&& undelete(name
) < 0) {
291 warn("cannot delete whiteout %s", name
);
294 Vprintf(stdout
, "Delete whiteout %s\n", name
);
299 * find lowest number file (above "start") that needs to be extracted
302 lowerbnd(ino_t start
)
304 register struct entry
*ep
;
306 for ( ; start
< maxino
; start
++) {
307 ep
= lookupino(start
);
308 if (ep
== NULL
|| ep
->e_type
== NODE
)
310 if (ep
->e_flags
& (NEW
|EXTRACT
))
317 * find highest number file (below "start") that needs to be extracted
320 upperbnd(ino_t start
)
322 register struct entry
*ep
;
324 for ( ; start
> ROOTINO
; start
--) {
325 ep
= lookupino(start
);
326 if (ep
== NULL
|| ep
->e_type
== NODE
)
328 if (ep
->e_flags
& (NEW
|EXTRACT
))
335 * report on a badly formed entry
338 badentry(struct entry
*ep
, const char *msg
)
341 fprintf(stderr
, "bad entry: %s\n", msg
);
342 fprintf(stderr
, "name: %s\n", myname(ep
));
343 fprintf(stderr
, "parent name %s\n", myname(ep
->e_parent
));
344 if (ep
->e_sibling
!= NULL
)
345 fprintf(stderr
, "sibling name: %s\n", myname(ep
->e_sibling
));
346 if (ep
->e_entries
!= NULL
)
347 fprintf(stderr
, "next entry name: %s\n", myname(ep
->e_entries
));
348 if (ep
->e_links
!= NULL
)
349 fprintf(stderr
, "next link name: %s\n", myname(ep
->e_links
));
350 if (ep
->e_next
!= NULL
)
352 "next hashchain name: %s\n", myname(ep
->e_next
));
353 fprintf(stderr
, "entry type: %s\n",
354 ep
->e_type
== NODE
? "NODE" : "LEAF");
355 fprintf(stderr
, "inode number: %lu\n", (unsigned long)ep
->e_ino
);
356 panic("flags: %s\n", flagvalues(ep
));
360 * Construct a string indicating the active flag bits of an entry.
363 flagvalues(struct entry
*ep
)
365 static char flagbuf
[BUFSIZ
];
367 (void) strcpy(flagbuf
, "|NIL");
369 if (ep
->e_flags
& REMOVED
)
370 (void) strcat(flagbuf
, "|REMOVED");
371 if (ep
->e_flags
& TMPNAME
)
372 (void) strcat(flagbuf
, "|TMPNAME");
373 if (ep
->e_flags
& EXTRACT
)
374 (void) strcat(flagbuf
, "|EXTRACT");
375 if (ep
->e_flags
& NEW
)
376 (void) strcat(flagbuf
, "|NEW");
377 if (ep
->e_flags
& KEEP
)
378 (void) strcat(flagbuf
, "|KEEP");
379 if (ep
->e_flags
& EXISTED
)
380 (void) strcat(flagbuf
, "|EXISTED");
381 return (&flagbuf
[1]);
385 * Check to see if a name is on a dump tape.
388 dirlookup(const char *name
)
393 ino
= ((dp
= pathsearch(name
)) == NULL
) ? 0 : dp
->d_ino
;
395 if (ino
== 0 || TSTINO(ino
, dumpmap
) == 0)
396 fprintf(stderr
, "%s is not on the tape\n", name
);
404 reply(const char *question
)
409 fprintf(stderr
, "%s? [yn] ", question
);
410 (void) fflush(stderr
);
412 while (c
!= '\n' && getc(terminal
) != '\n')
415 } while (c
!= 'y' && c
!= 'n');
422 * handle unexpected inconsistencies
432 panic(const char *fmt
, ...)
446 vfprintf(stderr
, fmt
, ap
);
449 if (reply("abort") == GOOD
) {
450 if (reply("dump core") == GOOD
)