+/* r_flush:
+ flush current window to file if file is assocated with set
+ */
+static void r_flush (RSFD rfd, int mk)
+{
+ struct rset_temp_info *info = ((struct rset_temp_rfd*) rfd)->info;
+
+ if (!info->fname && mk)
+ {
+ char *s = (char*) tempnam (temppath_root, "zrs");
+
+ info->fname = xmalloc (strlen(s)+1);
+ strcpy (info->fname, s);
+
+ logf (LOG_DEBUG, "creating tempfile %s", info->fname);
+ info->fd = open (info->fname, O_RDWR|O_CREAT, 0666);
+ if (info->fd == -1)
+ {
+ logf (LOG_FATAL|LOG_ERRNO, "open %s", info->fname);
+ exit (1);
+ }
+ }
+ if (info->fname && info->fd != -1 && info->dirty)
+ {
+ size_t r, count;
+
+ if (lseek (info->fd, info->pos_buf, SEEK_SET) == -1)
+ {
+ logf (LOG_FATAL|LOG_ERRNO, "lseek %s", info->fname);
+ exit (1);
+ }
+ count = info->buf_size;
+ if (count > info->pos_end - info->pos_buf)
+ count = info->pos_end - info->pos_buf;
+ if ((r = write (info->fd, info->buf_mem, count)) < count)
+ {
+ if (r == -1)
+ logf (LOG_FATAL|LOG_ERRNO, "read %s", info->fname);
+ else
+ logf (LOG_FATAL, "write of %ld but got %ld",
+ (long) count, (long) r);
+ exit (1);
+ }
+ info->dirty = 0;
+ }
+}
+
+static void r_close (RSFD rfd)
+{
+ struct rset_temp_info *info = ((struct rset_temp_rfd*)rfd)->info;
+
+ r_flush (rfd, 0);
+ if (info->fname && info->fd != -1)
+ {
+ close (info->fd);
+ info->fd = -1;
+ }
+}
+
+static void r_delete (RSET ct)
+{
+ struct rset_temp_info *info = ct->buf;
+
+ if (info->fname)
+ unlink (info->fname);
+ free (info->buf_mem);
+ logf (LOG_DEBUG, "r_delete: set size %ld", (long) info->pos_end);
+ if (info->fname)
+ {
+ logf (LOG_DEBUG, "r_delete: unlink %s", info->fname);
+ unlink (info->fname);
+ free (info->fname);
+ }
+ free (info);
+}
+
+/* r_reread:
+ read from file to window if file is assocated with set -
+ indicated by fname
+ */
+static void r_reread (RSFD rfd)
+{
+ struct rset_temp_info *info = ((struct rset_temp_rfd*)rfd)->info;
+
+ if (info->fname)
+ {
+ size_t r, count;