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utilities.c

/*
 * Copyright (c) 1980, 1986, 1993
 *    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.
 * 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.
 */

#if 0
#ifndef lint
static const char sccsid[] = "@(#)utilities.c   8.6 (Berkeley) 5/19/95";
#endif /* not lint */
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/sbin/fsck_ffs/utilities.c,v 1.23 2004/04/09 19:58:28 markm Exp $");

#include <sys/param.h>
#include <sys/types.h>
#include <sys/stat.h>

#include <ufs/ufs/dinode.h>
#include <ufs/ufs/dir.h>
#include <ufs/ffs/fs.h>

#include <err.h>
#include <errno.h>
#include <string.h>
#include <ctype.h>
#include <fstab.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#include "fsck.h"


char *
blockcheck(char *origname)
{
      struct stat stblock;
      char *newname, *cp;
      struct fstab *fsinfo;
      int retried = 0, len;
      static char device[MAXPATHLEN];

      newname = origname;
      if (stat(newname, &stblock) < 0) {
            cp = strrchr(newname, '/');
            if (cp == 0) {
                  (void)snprintf(device, sizeof(device), "%s%s",
                        _PATH_DEV, newname);
                  newname = device;
            }
      }
retry:
      if (stat(newname, &stblock) < 0) {
            printf("Can't stat %s: %s\n", newname, strerror(errno));
            return (origname);
      }
      switch(stblock.st_mode & S_IFMT) {
      case S_IFCHR:
      case S_IFBLK:
            return(newname);
      case S_IFDIR:
            if (retried)
                  break;
            
            len = strlen(origname) - 1;
            if (len > 0 && origname[len] == '/')
                  /* remove trailing slash */
                  origname[len] = '\0';
            if ((fsinfo = getfsfile(origname)) == NULL) {
                  printf(
                      "Can't resolve %s to character special device.\n",
                      origname);
                  return (origname);
            }
            newname = fsinfo->fs_spec;
            retried++;
            goto retry;
      }
      /*
       * Not a block or character device, just return name and
       * let the user decide whether to use it.
       */
      return (origname);
}

void
infohandler(int sig __unused)
{
      got_siginfo = 1;
}

void
alarmhandler(int sig __unused)
{
      got_sigalarm = 1;
}

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