示例#1
0
/* Recursively scan the given directory DIR.
   DEVICE is the device number where DIR resides (for --one-file-system).
   If CMDLINE is true, the directory name was explicitly listed in the
   command line.
   Unless *PDIR is NULL, store there a pointer to the struct directory
   describing DIR. */
struct directory *
scan_directory (char *dir, dev_t device, bool cmdline)
{
  char *dirp = savedir (dir);	/* for scanning directory */
  namebuf_t nbuf;
  char *tmp;
  struct stat stat_data;
  struct directory *directory;
  char ch;
  
  if (! dirp)
    savedir_error (dir);

  tmp = xstrdup (dir);
  zap_slashes (tmp);
  
  if (deref_stat (dereference_option, tmp, &stat_data))
    {
      dir_removed_diag (tmp, cmdline, stat_diag);
      free (tmp);
      free (dirp);
      return NULL;
    }

  directory = procdir (tmp, &stat_data, device,
		       (cmdline ? PD_FORCE_INIT : 0),
		       &ch);
  
  free (tmp);

  nbuf = namebuf_create (dir);

  if (dirp && directory->children != NO_CHILDREN)
    {
      char *entry;	/* directory entry being scanned */
      dumpdir_iter_t itr;

      makedumpdir (directory, dirp);

      for (entry = dumpdir_first (directory->dump, 1, &itr);
	   entry;
	   entry = dumpdir_next (itr))
	{
	  char *full_name = namebuf_name (nbuf, entry + 1);

	  if (*entry == 'I') /* Ignored entry */
	    *entry = 'N';
	  else if (excluded_name (full_name))
	    *entry = 'N';
	  else
	    {
	      if (deref_stat (dereference_option, full_name, &stat_data))
		{
		  file_removed_diag (full_name, false, stat_diag);
		  *entry = 'N';
		  continue;
		}

	      if (S_ISDIR (stat_data.st_mode))
		{
		  int pd_flag = 0;
		  if (!recursion_option)
		    pd_flag |= PD_FORCE_CHILDREN | NO_CHILDREN;
		  else if (directory->children == ALL_CHILDREN)
		    pd_flag |= PD_FORCE_CHILDREN | ALL_CHILDREN;
		  *entry = 'D';
		  procdir (full_name, &stat_data, device, pd_flag, entry);
		}

	      else if (one_file_system_option && device != stat_data.st_dev)
		*entry = 'N';

	      else if (*entry == 'Y')
		/* New entry, skip further checks */;

	      /* FIXME: if (S_ISHIDDEN (stat_data.st_mode))?? */

	      else if (OLDER_STAT_TIME (stat_data, m)
		       && (!after_date_option
			   || OLDER_STAT_TIME (stat_data, c)))
		*entry = 'N';
	      else
		*entry = 'Y';
	    }
	}
      free (itr);
    }

  namebuf_free (nbuf);

  if (dirp)
    free (dirp);

  return directory;
}
示例#2
0
文件: incremen.c 项目: Distrotech/tar
/* Recursively scan the directory identified by ST.  */
struct directory *
scan_directory (struct tar_stat_info *st)
{
  char const *dir = st->orig_file_name;
  char *dirp = get_directory_entries (st);
  dev_t device = st->stat.st_dev;
  bool cmdline = ! st->parent;
  namebuf_t nbuf;
  char *tmp;
  struct directory *directory;
  char ch;

  if (! dirp)
    savedir_error (dir);

  info_attach_exclist (st);

  tmp = xstrdup (dir);
  zap_slashes (tmp);

  directory = procdir (tmp, st,
		       (cmdline ? PD_FORCE_INIT : 0),
		       &ch);

  free (tmp);

  nbuf = namebuf_create (dir);

  if (dirp)
    {
      if (directory->children != NO_CHILDREN)
	{
	  char *entry;	/* directory entry being scanned */
	  struct dumpdir_iter *itr;

	  makedumpdir (directory, dirp);

	  for (entry = dumpdir_first (directory->dump, 1, &itr);
	       entry;
	       entry = dumpdir_next (itr))
	    {
	      char *full_name = namebuf_name (nbuf, entry + 1);

	      if (*entry == 'I') /* Ignored entry */
		*entry = 'N';
	      else if (excluded_name (full_name, st))
		*entry = 'N';
	      else
		{
		  int fd = st->fd;
		  void (*diag) (char const *) = 0;
		  struct tar_stat_info stsub;
		  tar_stat_init (&stsub);

		  if (fd < 0)
		    {
		      errno = - fd;
		      diag = open_diag;
		    }
		  else if (fstatat (fd, entry + 1, &stsub.stat,
				    fstatat_flags) != 0)
		    diag = stat_diag;
		  else if (S_ISDIR (stsub.stat.st_mode))
		    {
		      int subfd = subfile_open (st, entry + 1,
						open_read_flags);
		      if (subfd < 0)
			diag = open_diag;
		      else
			{
			  stsub.fd = subfd;
			  if (fstat (subfd, &stsub.stat) != 0)
			    diag = stat_diag;
			}
		    }

		  if (diag)
		    {
		      file_removed_diag (full_name, false, diag);
		      *entry = 'N';
		    }
		  else if (S_ISDIR (stsub.stat.st_mode))
		    {
		      int pd_flag = 0;
		      if (!recursion_option)
			pd_flag |= PD_FORCE_CHILDREN | NO_CHILDREN;
		      else if (directory->children == ALL_CHILDREN)
			pd_flag |= PD_FORCE_CHILDREN | ALL_CHILDREN;
		      *entry = 'D';

		      stsub.parent = st;
		      procdir (full_name, &stsub, pd_flag, entry);
		      restore_parent_fd (&stsub);
		    }
		  else if (one_file_system_option &&
			   device != stsub.stat.st_dev)
		    *entry = 'N';
		  else if (*entry == 'Y')
		    /* New entry, skip further checks */;
		  /* FIXME: if (S_ISHIDDEN (stat_data.st_mode))?? */
		  else if (OLDER_STAT_TIME (stsub.stat, m)
			   && (!after_date_option
			       || OLDER_STAT_TIME (stsub.stat, c)))
		    *entry = 'N';
		  else
		    *entry = 'Y';

		  tar_stat_destroy (&stsub);
		}
	    }
	  free (itr);
	}
      else if (directory->tagfile)
	maketagdumpdir (directory);
    }

  namebuf_free (nbuf);

  free (dirp);

  return directory;
}