home *** CD-ROM | disk | FTP | other *** search
- /*
- * Copyright (c) 1983 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 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
- * SUCH DAMAGE.
- */
-
- #ifndef lint
- static char sccsid[] = "@(#)utilities.c 5.10 (Berkeley) 12/2/92";
- #endif /* not lint */
-
- #include <sys/param.h>
- #include <sys/stat.h>
-
- #include <ufs/ufs/dinode.h>
- #include <ufs/ufs/dir.h>
-
- #include <errno.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <unistd.h>
-
- #include "restore.h"
- #include "extern.h"
-
- /*
- * Insure that all the components of a pathname exist.
- */
- void
- pathcheck(name)
- char *name;
- {
- register char *cp;
- struct entry *ep;
- char *start;
-
- start = index(name, '/');
- if (start == 0)
- return;
- for (cp = start; *cp != '\0'; cp++) {
- if (*cp != '/')
- continue;
- *cp = '\0';
- ep = lookupname(name);
- if (ep == NULL) {
- ep = addentry(name, pathsearch(name)->d_ino, NODE);
- newnode(ep);
- }
- ep->e_flags |= NEW|KEEP;
- *cp = '/';
- }
- }
-
- /*
- * Change a name to a unique temporary name.
- */
- void
- mktempname(ep)
- register struct entry *ep;
- {
- char oldname[MAXPATHLEN];
-
- if (ep->e_flags & TMPNAME)
- badentry(ep, "mktempname: called with TMPNAME");
- ep->e_flags |= TMPNAME;
- (void) strcpy(oldname, myname(ep));
- freename(ep->e_name);
- ep->e_name = savename(gentempname(ep));
- ep->e_namlen = strlen(ep->e_name);
- renameit(oldname, myname(ep));
- }
-
- /*
- * Generate a temporary name for an entry.
- */
- char *
- gentempname(ep)
- struct entry *ep;
- {
- static char name[MAXPATHLEN];
- struct entry *np;
- long i = 0;
-
- for (np = lookupino(ep->e_ino);
- np != NULL && np != ep; np = np->e_links)
- i++;
- if (np == NULL)
- badentry(ep, "not on ino list");
- (void) sprintf(name, "%s%d%d", TMPHDR, i, ep->e_ino);
- return (name);
- }
-
- /*
- * Rename a file or directory.
- */
- void
- renameit(from, to)
- char *from, *to;
- {
- if (!Nflag && rename(from, to) < 0) {
- fprintf(stderr, "warning: cannot rename %s to %s: %s\n",
- from, to, strerror(errno));
- return;
- }
- vprintf(stdout, "rename %s to %s\n", from, to);
- }
-
- /*
- * Create a new node (directory).
- */
- void
- newnode(np)
- struct entry *np;
- {
- char *cp;
-
- if (np->e_type != NODE)
- badentry(np, "newnode: not a node");
- cp = myname(np);
- if (!Nflag && mkdir(cp, 0777) < 0) {
- np->e_flags |= EXISTED;
- fprintf(stderr, "warning: %s: %s\n", cp, strerror(errno));
- return;
- }
- vprintf(stdout, "Make node %s\n", cp);
- }
-
- /*
- * Remove an old node (directory).
- */
- void
- removenode(ep)
- register struct entry *ep;
- {
- char *cp;
-
- if (ep->e_type != NODE)
- badentry(ep, "removenode: not a node");
- if (ep->e_entries != NULL)
- badentry(ep, "removenode: non-empty directory");
- ep->e_flags |= REMOVED;
- ep->e_flags &= ~TMPNAME;
- cp = myname(ep);
- if (!Nflag && rmdir(cp) < 0) {
- fprintf(stderr, "warning: %s: %s\n", cp, strerror(errno));
- return;
- }
- vprintf(stdout, "Remove node %s\n", cp);
- }
-
- /*
- * Remove a leaf.
- */
- void
- removeleaf(ep)
- register struct entry *ep;
- {
- char *cp;
-
- if (ep->e_type != LEAF)
- badentry(ep, "removeleaf: not a leaf");
- ep->e_flags |= REMOVED;
- ep->e_flags &= ~TMPNAME;
- cp = myname(ep);
- if (!Nflag && unlink(cp) < 0) {
- fprintf(stderr, "warning: %s: %s\n", cp, strerror(errno));
- return;
- }
- vprintf(stdout, "Remove leaf %s\n", cp);
- }
-
- /*
- * Create a link.
- */
- int
- linkit(existing, new, type)
- char *existing, *new;
- int type;
- {
-
- if (type == SYMLINK) {
- if (!Nflag && symlink(existing, new) < 0) {
- fprintf(stderr,
- "warning: cannot create symbolic link %s->%s: %s\n",
- new, existing, strerror(errno));
- return (FAIL);
- }
- } else if (type == HARDLINK) {
- if (!Nflag && link(existing, new) < 0) {
- fprintf(stderr,
- "warning: cannot create hard link %s->%s: %s\n",
- new, existing, strerror(errno));
- return (FAIL);
- }
- } else {
- panic("linkit: unknown type %d\n", type);
- return (FAIL);
- }
- vprintf(stdout, "Create %s link %s->%s\n",
- type == SYMLINK ? "symbolic" : "hard", new, existing);
- return (GOOD);
- }
-
- /*
- * find lowest number file (above "start") that needs to be extracted
- */
- ino_t
- lowerbnd(start)
- ino_t start;
- {
- register struct entry *ep;
-
- for ( ; start < maxino; start++) {
- ep = lookupino(start);
- if (ep == NULL || ep->e_type == NODE)
- continue;
- if (ep->e_flags & (NEW|EXTRACT))
- return (start);
- }
- return (start);
- }
-
- /*
- * find highest number file (below "start") that needs to be extracted
- */
- ino_t
- upperbnd(start)
- ino_t start;
- {
- register struct entry *ep;
-
- for ( ; start > ROOTINO; start--) {
- ep = lookupino(start);
- if (ep == NULL || ep->e_type == NODE)
- continue;
- if (ep->e_flags & (NEW|EXTRACT))
- return (start);
- }
- return (start);
- }
-
- /*
- * report on a badly formed entry
- */
- void
- badentry(ep, msg)
- register struct entry *ep;
- char *msg;
- {
-
- fprintf(stderr, "bad entry: %s\n", msg);
- fprintf(stderr, "name: %s\n", myname(ep));
- fprintf(stderr, "parent name %s\n", myname(ep->e_parent));
- if (ep->e_sibling != NULL)
- fprintf(stderr, "sibling name: %s\n", myname(ep->e_sibling));
- if (ep->e_entries != NULL)
- fprintf(stderr, "next entry name: %s\n", myname(ep->e_entries));
- if (ep->e_links != NULL)
- fprintf(stderr, "next link name: %s\n", myname(ep->e_links));
- if (ep->e_next != NULL)
- fprintf(stderr,
- "next hashchain name: %s\n", myname(ep->e_next));
- fprintf(stderr, "entry type: %s\n",
- ep->e_type == NODE ? "NODE" : "LEAF");
- fprintf(stderr, "inode number: %ld\n", ep->e_ino);
- panic("flags: %s\n", flagvalues(ep));
- }
-
- /*
- * Construct a string indicating the active flag bits of an entry.
- */
- char *
- flagvalues(ep)
- register struct entry *ep;
- {
- static char flagbuf[BUFSIZ];
-
- (void) strcpy(flagbuf, "|NIL");
- flagbuf[0] = '\0';
- if (ep->e_flags & REMOVED)
- (void) strcat(flagbuf, "|REMOVED");
- if (ep->e_flags & TMPNAME)
- (void) strcat(flagbuf, "|TMPNAME");
- if (ep->e_flags & EXTRACT)
- (void) strcat(flagbuf, "|EXTRACT");
- if (ep->e_flags & NEW)
- (void) strcat(flagbuf, "|NEW");
- if (ep->e_flags & KEEP)
- (void) strcat(flagbuf, "|KEEP");
- if (ep->e_flags & EXISTED)
- (void) strcat(flagbuf, "|EXISTED");
- return (&flagbuf[1]);
- }
-
- /*
- * Check to see if a name is on a dump tape.
- */
- ino_t
- dirlookup(name)
- char *name;
- {
- ino_t ino;
-
- ino = pathsearch(name)->d_ino;
- if (ino == 0 || TSTINO(ino, dumpmap) == 0)
- fprintf(stderr, "%s is not on tape\n", name);
- return (ino);
- }
-
- /*
- * Elicit a reply.
- */
- int
- reply(question)
- char *question;
- {
- char c;
-
- do {
- fprintf(stderr, "%s? [yn] ", question);
- (void) fflush(stderr);
- c = getc(terminal);
- while (c != '\n' && getc(terminal) != '\n')
- if (feof(terminal))
- return (FAIL);
- } while (c != 'y' && c != 'n');
- if (c == 'y')
- return (GOOD);
- return (FAIL);
- }
-
- /*
- * handle unexpected inconsistencies
- */
- #if __STDC__
- #include <stdarg.h>
- #else
- #include <varargs.h>
- #endif
-
- void
- #if __STDC__
- panic(const char *fmt, ...)
- #else
- panic(fmt, va_alist)
- char *fmt;
- va_dcl
- #endif
- {
- va_list ap;
- #if __STDC__
- va_start(ap, fmt);
- #else
- va_start(ap);
- #endif
-
- vfprintf(stderr, fmt, ap);
- if (yflag)
- return;
- if (reply("abort") == GOOD) {
- if (reply("dump core") == GOOD)
- abort();
- done(1);
- }
- }
-