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@noos.fr>, 1999-2000
6 * Stelian Pop <pop@noos.fr> - AlcĂ´ve <www.alcove.fr>, 2000
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
43 static const char rcsid[] =
44 "$Id: utilities.c,v 1.10 2000/12/04 15:43:17 stelian Exp $";
47 #include <sys/param.h>
52 #include <linux/ext2_fs.h>
53 #include <bsdcompat.h>
55 #include <ufs/ufs/dinode.h>
56 #include <ufs/ufs/dir.h>
57 #endif /* __linux__ */
60 #include <compaterr.h>
66 #include <ext2fs/ext2fs.h>
73 * Insure that all the components of a pathname exist.
82 start = strchr(name, '/');
85 for (cp = start; *cp != '\0'; cp++) {
89 ep = lookupname(name);
91 /* Safe; we know the pathname exists in the dump. */
92 ep = addentry(name, pathsearch(name)->d_ino, NODE);
95 ep->e_flags |= NEW|KEEP;
101 * Change a name to a unique temporary name.
104 mktempname(struct entry *ep)
106 char oldname[MAXPATHLEN];
108 if (ep->e_flags & TMPNAME)
109 badentry(ep, "mktempname: called with TMPNAME");
110 ep->e_flags |= TMPNAME;
111 (void) strcpy(oldname, myname(ep));
112 freename(ep->e_name);
113 ep->e_name = savename(gentempname(ep));
114 ep->e_namlen = strlen(ep->e_name);
115 renameit(oldname, myname(ep));
119 * Generate a temporary name for an entry.
122 gentempname(struct entry *ep)
124 static char name[MAXPATHLEN];
128 for (np = lookupino(ep->e_ino);
129 np != NULL && np != ep; np = np->e_links)
132 badentry(ep, "not on ino list");
133 (void) snprintf(name, sizeof(name), "%s%ld%lu", TMPHDR, i, (unsigned long)ep->e_ino);
138 * Rename a file or directory.
141 renameit(char *from, char *to)
143 if (!Nflag && rename(from, to) < 0) {
144 warn("cannot rename %s to %s", from, to);
147 Vprintf(stdout, "rename %s to %s\n", from, to);
151 * Create a new node (directory).
154 newnode(struct entry *np)
157 if (np->e_type != NODE)
158 badentry(np, "newnode: not a node");
160 if (command == 'C') return;
162 if (!Nflag && mkdir(cp, 0777) < 0 && !uflag) {
163 np->e_flags |= EXISTED;
167 Vprintf(stdout, "Make node %s\n", cp);
171 * Remove an old node (directory).
174 removenode(struct entry *ep)
178 if (ep->e_type != NODE)
179 badentry(ep, "removenode: not a node");
180 if (ep->e_entries != NULL)
181 badentry(ep, "removenode: non-empty directory");
182 ep->e_flags |= REMOVED;
183 ep->e_flags &= ~TMPNAME;
185 if (!Nflag && rmdir(cp) < 0) {
189 Vprintf(stdout, "Remove node %s\n", cp);
196 removeleaf(struct entry *ep)
200 if (command == 'C') return;
202 if (ep->e_type != LEAF)
203 badentry(ep, "removeleaf: not a leaf");
204 ep->e_flags |= REMOVED;
205 ep->e_flags &= ~TMPNAME;
207 if (!Nflag && unlink(cp) < 0) {
211 Vprintf(stdout, "Remove leaf %s\n", cp);
218 linkit(char *existing, char *new, int type)
221 /* if we want to unlink first, do it now so *link() won't fail */
225 if (type == SYMLINK) {
226 if (!Nflag && symlink(existing, new) < 0) {
227 warn("cannot create symbolic link %s->%s",
231 } else if (type == HARDLINK) {
234 if (!Nflag && (ret = link(existing, new)) < 0) {
240 * Most likely, the schg flag is set. Clear the
241 * flags and try again.
243 if (stat(existing, &s) == 0 && s.st_flags != 0 &&
244 chflags(existing, 0) == 0) {
245 ret = link(existing, new);
246 chflags(existing, s.st_flags);
252 * Most likely, the immutable or append-only attribute
253 * is set. Clear the attributes and try again.
255 if (fgetflags (existing, &s) != -1 &&
256 fsetflags (existing, 0) != -1) {
257 ret = link(existing, new);
258 fsetflags(existing, s);
262 warn("warning: cannot create hard link %s->%s",
268 panic("linkit: unknown type %d\n", type);
271 Vprintf(stdout, "Create %s link %s->%s\n",
272 type == SYMLINK ? "symbolic" : "hard", new, existing);
281 addwhiteout(char *name)
284 if (!Nflag && mknod(name, S_IFWHT, 0) < 0) {
285 warn("cannot create whiteout %s", name);
288 Vprintf(stdout, "Create whiteout %s\n", name);
296 delwhiteout(struct entry *ep)
300 if (ep->e_type != LEAF)
301 badentry(ep, "delwhiteout: not a leaf");
302 ep->e_flags |= REMOVED;
303 ep->e_flags &= ~TMPNAME;
305 if (!Nflag && undelete(name) < 0) {
306 warn("cannot delete whiteout %s", name);
309 Vprintf(stdout, "Delete whiteout %s\n", name);
314 * find lowest number file (above "start") that needs to be extracted
317 lowerbnd(ino_t start)
319 register struct entry *ep;
321 for ( ; start < maxino; start++) {
322 ep = lookupino(start);
323 if (ep == NULL || ep->e_type == NODE)
325 if (ep->e_flags & (NEW|EXTRACT))
332 * find highest number file (below "start") that needs to be extracted
335 upperbnd(ino_t start)
337 register struct entry *ep;
339 for ( ; start > ROOTINO; start--) {
340 ep = lookupino(start);
341 if (ep == NULL || ep->e_type == NODE)
343 if (ep->e_flags & (NEW|EXTRACT))
350 * report on a badly formed entry
353 badentry(struct entry *ep, const char *msg)
356 fprintf(stderr, "bad entry: %s\n", msg);
357 fprintf(stderr, "name: %s\n", myname(ep));
358 fprintf(stderr, "parent name %s\n", myname(ep->e_parent));
359 if (ep->e_sibling != NULL)
360 fprintf(stderr, "sibling name: %s\n", myname(ep->e_sibling));
361 if (ep->e_entries != NULL)
362 fprintf(stderr, "next entry name: %s\n", myname(ep->e_entries));
363 if (ep->e_links != NULL)
364 fprintf(stderr, "next link name: %s\n", myname(ep->e_links));
365 if (ep->e_next != NULL)
367 "next hashchain name: %s\n", myname(ep->e_next));
368 fprintf(stderr, "entry type: %s\n",
369 ep->e_type == NODE ? "NODE" : "LEAF");
370 fprintf(stderr, "inode number: %lu\n", (unsigned long)ep->e_ino);
371 panic("flags: %s\n", flagvalues(ep));
375 * Construct a string indicating the active flag bits of an entry.
378 flagvalues(struct entry *ep)
380 static char flagbuf[BUFSIZ];
382 (void) strcpy(flagbuf, "|NIL");
384 if (ep->e_flags & REMOVED)
385 (void) strcat(flagbuf, "|REMOVED");
386 if (ep->e_flags & TMPNAME)
387 (void) strcat(flagbuf, "|TMPNAME");
388 if (ep->e_flags & EXTRACT)
389 (void) strcat(flagbuf, "|EXTRACT");
390 if (ep->e_flags & NEW)
391 (void) strcat(flagbuf, "|NEW");
392 if (ep->e_flags & KEEP)
393 (void) strcat(flagbuf, "|KEEP");
394 if (ep->e_flags & EXISTED)
395 (void) strcat(flagbuf, "|EXISTED");
396 return (&flagbuf[1]);
400 * Check to see if a name is on a dump tape.
403 dirlookup(const char *name)
408 ino = ((dp = pathsearch(name)) == NULL) ? 0 : dp->d_ino;
410 if (ino == 0 || TSTINO(ino, dumpmap) == 0)
411 fprintf(stderr, "%s is not on the tape\n", name);
419 reply(const char *question)
424 fprintf(stderr, "%s? [yn] ", question);
425 (void) fflush(stderr);
427 while (c != '\n' && getc(terminal) != '\n')
430 } while (c != 'y' && c != 'n');
437 * handle unexpected inconsistencies
447 panic(const char *fmt, ...)
461 vfprintf(stderr, fmt, ap);
464 if (reply("abort") == GOOD) {
465 if (reply("dump core") == GOOD)