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
44 static char sccsid[] = "@(#)utilities.c 8.5 (Berkeley) 4/28/95";
46 static const char rcsid[] =
47 "$Id: utilities.c,v 1.3 1999/10/11 12:59:21 stelian Exp $";
50 #include <sys/param.h>
55 #include <linux/ext2_fs.h>
56 #include <bsdcompat.h>
58 #include <ufs/ufs/dinode.h>
59 #include <ufs/ufs/dir.h>
60 #endif /* __linux__ */
63 #include <compaterr.h>
69 #include <ext2fs/ext2fs.h>
76 * Insure that all the components of a pathname exist.
85 start = strchr(name, '/');
88 for (cp = start; *cp != '\0'; cp++) {
92 ep = lookupname(name);
94 /* Safe; we know the pathname exists in the dump. */
95 ep = addentry(name, pathsearch(name)->d_ino, NODE);
98 ep->e_flags |= NEW|KEEP;
104 * Change a name to a unique temporary name.
107 mktempname(struct entry *ep)
109 char oldname[MAXPATHLEN];
111 if (ep->e_flags & TMPNAME)
112 badentry(ep, "mktempname: called with TMPNAME");
113 ep->e_flags |= TMPNAME;
114 (void) strcpy(oldname, myname(ep));
115 freename(ep->e_name);
116 ep->e_name = savename(gentempname(ep));
117 ep->e_namlen = strlen(ep->e_name);
118 renameit(oldname, myname(ep));
122 * Generate a temporary name for an entry.
125 gentempname(struct entry *ep)
127 static char name[MAXPATHLEN];
131 for (np = lookupino(ep->e_ino);
132 np != NULL && np != ep; np = np->e_links)
135 badentry(ep, "not on ino list");
136 (void) snprintf(name, sizeof(name), "%s%ld%lu", TMPHDR, i, (unsigned long)ep->e_ino);
141 * Rename a file or directory.
144 renameit(char *from, char *to)
146 if (!Nflag && rename(from, to) < 0) {
147 warn("cannot rename %s to %s", from, to);
150 Vprintf(stdout, "rename %s to %s\n", from, to);
154 * Create a new node (directory).
157 newnode(struct entry *np)
161 if (np->e_type != NODE)
162 badentry(np, "newnode: not a node");
164 if (command == 'C') return;
166 if (!Nflag && mkdir(cp, 0777) < 0 && !uflag) {
167 np->e_flags |= EXISTED;
171 Vprintf(stdout, "Make node %s\n", cp);
175 * Remove an old node (directory).
178 removenode(struct entry *ep)
182 if (ep->e_type != NODE)
183 badentry(ep, "removenode: not a node");
184 if (ep->e_entries != NULL)
185 badentry(ep, "removenode: non-empty directory");
186 ep->e_flags |= REMOVED;
187 ep->e_flags &= ~TMPNAME;
189 if (!Nflag && rmdir(cp) < 0) {
193 Vprintf(stdout, "Remove node %s\n", cp);
200 removeleaf(struct entry *ep)
204 if (command == 'C') return;
206 if (ep->e_type != LEAF)
207 badentry(ep, "removeleaf: not a leaf");
208 ep->e_flags |= REMOVED;
209 ep->e_flags &= ~TMPNAME;
211 if (!Nflag && unlink(cp) < 0) {
215 Vprintf(stdout, "Remove leaf %s\n", cp);
222 linkit(char *existing, char *new, int type)
225 /* if we want to unlink first, do it now so *link() won't fail */
229 if (type == SYMLINK) {
230 if (!Nflag && symlink(existing, new) < 0) {
231 warn("cannot create symbolic link %s->%s",
235 } else if (type == HARDLINK) {
238 if (!Nflag && (ret = link(existing, new)) < 0) {
244 * Most likely, the schg flag is set. Clear the
245 * flags and try again.
247 if (stat(existing, &s) == 0 && s.st_flags != 0 &&
248 chflags(existing, 0) == 0) {
249 ret = link(existing, new);
250 chflags(existing, s.st_flags);
254 warn("warning: cannot create hard link %s->%s",
260 panic("linkit: unknown type %d\n", type);
263 Vprintf(stdout, "Create %s link %s->%s\n",
264 type == SYMLINK ? "symbolic" : "hard", new, existing);
273 addwhiteout(char *name)
276 if (!Nflag && mknod(name, S_IFWHT, 0) < 0) {
277 warn("cannot create whiteout %s", name);
280 Vprintf(stdout, "Create whiteout %s\n", name);
288 delwhiteout(struct entry *ep)
292 if (ep->e_type != LEAF)
293 badentry(ep, "delwhiteout: not a leaf");
294 ep->e_flags |= REMOVED;
295 ep->e_flags &= ~TMPNAME;
297 if (!Nflag && undelete(name) < 0) {
298 warn("cannot delete whiteout %s", name);
301 Vprintf(stdout, "Delete whiteout %s\n", name);
306 * find lowest number file (above "start") that needs to be extracted
309 lowerbnd(ino_t start)
311 register struct entry *ep;
313 for ( ; start < maxino; start++) {
314 ep = lookupino(start);
315 if (ep == NULL || ep->e_type == NODE)
317 if (ep->e_flags & (NEW|EXTRACT))
324 * find highest number file (below "start") that needs to be extracted
327 upperbnd(ino_t start)
329 register struct entry *ep;
331 for ( ; start > ROOTINO; start--) {
332 ep = lookupino(start);
333 if (ep == NULL || ep->e_type == NODE)
335 if (ep->e_flags & (NEW|EXTRACT))
342 * report on a badly formed entry
345 badentry(struct entry *ep, const char *msg)
348 fprintf(stderr, "bad entry: %s\n", msg);
349 fprintf(stderr, "name: %s\n", myname(ep));
350 fprintf(stderr, "parent name %s\n", myname(ep->e_parent));
351 if (ep->e_sibling != NULL)
352 fprintf(stderr, "sibling name: %s\n", myname(ep->e_sibling));
353 if (ep->e_entries != NULL)
354 fprintf(stderr, "next entry name: %s\n", myname(ep->e_entries));
355 if (ep->e_links != NULL)
356 fprintf(stderr, "next link name: %s\n", myname(ep->e_links));
357 if (ep->e_next != NULL)
359 "next hashchain name: %s\n", myname(ep->e_next));
360 fprintf(stderr, "entry type: %s\n",
361 ep->e_type == NODE ? "NODE" : "LEAF");
362 fprintf(stderr, "inode number: %lu\n", (unsigned long)ep->e_ino);
363 panic("flags: %s\n", flagvalues(ep));
367 * Construct a string indicating the active flag bits of an entry.
370 flagvalues(struct entry *ep)
372 static char flagbuf[BUFSIZ];
374 (void) strcpy(flagbuf, "|NIL");
376 if (ep->e_flags & REMOVED)
377 (void) strcat(flagbuf, "|REMOVED");
378 if (ep->e_flags & TMPNAME)
379 (void) strcat(flagbuf, "|TMPNAME");
380 if (ep->e_flags & EXTRACT)
381 (void) strcat(flagbuf, "|EXTRACT");
382 if (ep->e_flags & NEW)
383 (void) strcat(flagbuf, "|NEW");
384 if (ep->e_flags & KEEP)
385 (void) strcat(flagbuf, "|KEEP");
386 if (ep->e_flags & EXISTED)
387 (void) strcat(flagbuf, "|EXISTED");
388 return (&flagbuf[1]);
392 * Check to see if a name is on a dump tape.
395 dirlookup(const char *name)
400 ino = ((dp = pathsearch(name)) == NULL) ? 0 : dp->d_ino;
402 if (ino == 0 || TSTINO(ino, dumpmap) == 0)
403 fprintf(stderr, "%s is not on the tape\n", name);
411 reply(const char *question)
416 fprintf(stderr, "%s? [yn] ", question);
417 (void) fflush(stderr);
419 while (c != '\n' && getc(terminal) != '\n')
422 } while (c != 'y' && c != 'n');
429 * handle unexpected inconsistencies
439 panic(const char *fmt, ...)
453 vfprintf(stderr, fmt, ap);
456 if (reply("abort") == GOOD) {
457 if (reply("dump core") == GOOD)