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 1.12 2001/03/19 13:22:49 stelian Exp $";
49 #include <compaterr.h>
54 #include <sys/param.h>
59 #include <linux/ext2_fs.h>
60 #include <ext2fs/ext2fs.h>
61 #include <bsdcompat.h>
63 #include <ufs/ufs/dinode.h>
64 #include <ufs/ufs/dir.h>
65 #endif /* __linux__ */
71 * Insure that all the components of a pathname exist.
80 start = strchr(name, '/');
83 for (cp = start; *cp != '\0'; cp++) {
87 ep = lookupname(name);
89 /* Safe; we know the pathname exists in the dump. */
90 ep = addentry(name, pathsearch(name)->d_ino, NODE);
93 ep->e_flags |= NEW|KEEP;
99 * Change a name to a unique temporary name.
102 mktempname(struct entry *ep)
104 char oldname[MAXPATHLEN];
106 if (ep->e_flags & TMPNAME)
107 badentry(ep, "mktempname: called with TMPNAME");
108 ep->e_flags |= TMPNAME;
109 (void) strcpy(oldname, myname(ep));
110 freename(ep->e_name);
111 ep->e_name = savename(gentempname(ep));
112 ep->e_namlen = strlen(ep->e_name);
113 renameit(oldname, myname(ep));
117 * Generate a temporary name for an entry.
120 gentempname(struct entry *ep)
122 static char name[MAXPATHLEN];
126 for (np = lookupino(ep->e_ino);
127 np != NULL && np != ep; np = np->e_links)
130 badentry(ep, "not on ino list");
131 (void) snprintf(name, sizeof(name), "%s%ld%lu", TMPHDR, i, (unsigned long)ep->e_ino);
136 * Rename a file or directory.
139 renameit(char *from, char *to)
141 if (!Nflag && rename(from, to) < 0) {
142 warn("cannot rename %s to %s", from, to);
145 Vprintf(stdout, "rename %s to %s\n", from, to);
149 * Create a new node (directory).
152 newnode(struct entry *np)
155 if (np->e_type != NODE)
156 badentry(np, "newnode: not a node");
158 if (command == 'C') return;
160 if (!Nflag && mkdir(cp, 0777) < 0 && !uflag) {
161 np->e_flags |= EXISTED;
165 Vprintf(stdout, "Make node %s\n", cp);
169 * Remove an old node (directory).
172 removenode(struct entry *ep)
176 if (ep->e_type != NODE)
177 badentry(ep, "removenode: not a node");
178 if (ep->e_entries != NULL)
179 badentry(ep, "removenode: non-empty directory");
180 ep->e_flags |= REMOVED;
181 ep->e_flags &= ~TMPNAME;
183 if (!Nflag && rmdir(cp) < 0) {
187 Vprintf(stdout, "Remove node %s\n", cp);
194 removeleaf(struct entry *ep)
198 if (command == 'C') return;
200 if (ep->e_type != LEAF)
201 badentry(ep, "removeleaf: not a leaf");
202 ep->e_flags |= REMOVED;
203 ep->e_flags &= ~TMPNAME;
205 if (!Nflag && unlink(cp) < 0) {
209 Vprintf(stdout, "Remove leaf %s\n", cp);
216 linkit(char *existing, char *new, int type)
219 /* if we want to unlink first, do it now so *link() won't fail */
223 if (type == SYMLINK) {
224 if (!Nflag && symlink(existing, new) < 0) {
225 warn("cannot create symbolic link %s->%s",
229 } else if (type == HARDLINK) {
232 if (!Nflag && (ret = link(existing, new)) < 0) {
238 * Most likely, the schg flag is set. Clear the
239 * flags and try again.
241 if (stat(existing, &s) == 0 && s.st_flags != 0 &&
242 chflags(existing, 0) == 0) {
243 ret = link(existing, new);
244 chflags(existing, s.st_flags);
250 * Most likely, the immutable or append-only attribute
251 * is set. Clear the attributes and try again.
253 if (fgetflags (existing, &s) != -1 &&
254 fsetflags (existing, 0) != -1) {
255 ret = link(existing, new);
256 fsetflags(existing, s);
260 warn("warning: cannot create hard link %s->%s",
266 panic("linkit: unknown type %d\n", type);
269 Vprintf(stdout, "Create %s link %s->%s\n",
270 type == SYMLINK ? "symbolic" : "hard", new, existing);
279 addwhiteout(char *name)
282 if (!Nflag && mknod(name, S_IFWHT, 0) < 0) {
283 warn("cannot create whiteout %s", name);
286 Vprintf(stdout, "Create whiteout %s\n", name);
294 delwhiteout(struct entry *ep)
298 if (ep->e_type != LEAF)
299 badentry(ep, "delwhiteout: not a leaf");
300 ep->e_flags |= REMOVED;
301 ep->e_flags &= ~TMPNAME;
303 if (!Nflag && undelete(name) < 0) {
304 warn("cannot delete whiteout %s", name);
307 Vprintf(stdout, "Delete whiteout %s\n", name);
312 * find lowest number file (above "start") that needs to be extracted
315 lowerbnd(ino_t start)
317 register struct entry *ep;
319 for ( ; start < maxino; start++) {
320 ep = lookupino(start);
321 if (ep == NULL || ep->e_type == NODE)
323 if (ep->e_flags & (NEW|EXTRACT))
330 * find highest number file (below "start") that needs to be extracted
333 upperbnd(ino_t start)
335 register struct entry *ep;
337 for ( ; start > ROOTINO; start--) {
338 ep = lookupino(start);
339 if (ep == NULL || ep->e_type == NODE)
341 if (ep->e_flags & (NEW|EXTRACT))
348 * report on a badly formed entry
351 badentry(struct entry *ep, const char *msg)
354 fprintf(stderr, "bad entry: %s\n", msg);
355 fprintf(stderr, "name: %s\n", myname(ep));
356 fprintf(stderr, "parent name %s\n", myname(ep->e_parent));
357 if (ep->e_sibling != NULL)
358 fprintf(stderr, "sibling name: %s\n", myname(ep->e_sibling));
359 if (ep->e_entries != NULL)
360 fprintf(stderr, "next entry name: %s\n", myname(ep->e_entries));
361 if (ep->e_links != NULL)
362 fprintf(stderr, "next link name: %s\n", myname(ep->e_links));
363 if (ep->e_next != NULL)
365 "next hashchain name: %s\n", myname(ep->e_next));
366 fprintf(stderr, "entry type: %s\n",
367 ep->e_type == NODE ? "NODE" : "LEAF");
368 fprintf(stderr, "inode number: %lu\n", (unsigned long)ep->e_ino);
369 panic("flags: %s\n", flagvalues(ep));
373 * Construct a string indicating the active flag bits of an entry.
376 flagvalues(struct entry *ep)
378 static char flagbuf[BUFSIZ];
380 (void) strcpy(flagbuf, "|NIL");
382 if (ep->e_flags & REMOVED)
383 (void) strcat(flagbuf, "|REMOVED");
384 if (ep->e_flags & TMPNAME)
385 (void) strcat(flagbuf, "|TMPNAME");
386 if (ep->e_flags & EXTRACT)
387 (void) strcat(flagbuf, "|EXTRACT");
388 if (ep->e_flags & NEW)
389 (void) strcat(flagbuf, "|NEW");
390 if (ep->e_flags & KEEP)
391 (void) strcat(flagbuf, "|KEEP");
392 if (ep->e_flags & EXISTED)
393 (void) strcat(flagbuf, "|EXISTED");
394 return (&flagbuf[1]);
398 * Check to see if a name is on a dump tape.
401 dirlookup(const char *name)
406 ino = ((dp = pathsearch(name)) == NULL) ? 0 : dp->d_ino;
408 if (ino == 0 || TSTINO(ino, dumpmap) == 0)
409 fprintf(stderr, "%s is not on the tape\n", name);
417 reply(const char *question)
422 fprintf(stderr, "%s? [yn] ", question);
423 (void) fflush(stderr);
425 while (c != '\n' && getc(terminal) != '\n')
428 } while (c != 'y' && c != 'n');
435 * handle unexpected inconsistencies
445 panic(const char *fmt, ...)
459 vfprintf(stderr, fmt, ap);
462 if (reply("abort") == GOOD) {
463 if (reply("dump core") == GOOD)