+\f
+/* Prevent recursive inclusion of the same file */
+struct file_id_list
+{
+ struct file_id_list *next;
+ ino_t ino;
+ dev_t dev;
+};
+
+static struct file_id_list *file_id_list;
+
+static void
+add_file_id (const char *filename)
+{
+ struct file_id_list *p;
+ struct stat st;
+
+ if (stat (filename, &st))
+ stat_fatal (filename);
+ for (p = file_id_list; p; p = p->next)
+ if (p->ino == st.st_ino && p->dev == st.st_dev)
+ {
+ FATAL_ERROR ((0, 0, _("%s: file list already read"),
+ quotearg_colon (filename)));
+ }
+ p = xmalloc (sizeof *p);
+ p->next = file_id_list;
+ p->ino = st.st_ino;
+ p->dev = st.st_dev;
+ file_id_list = p;
+}
+\f
+enum read_file_list_state /* Result of reading file name from the list file */
+ {
+ file_list_success, /* OK, name read successfully */
+ file_list_end, /* End of list file */
+ file_list_zero, /* Zero separator encountered where it should not */
+ file_list_skip /* Empty (zero-length) entry encountered, skip it */
+ };
+
+/* Read from FP a sequence of characters up to TERM and put them
+ into STK.
+ */
+static enum read_file_list_state
+read_name_from_file (struct name_elt *ent)
+{
+ int c;
+ size_t counter = 0;
+ FILE *fp = ent->v.file.fp;
+ int term = ent->v.file.term;
+ size_t count;
+
+ for (c = getc (fp); c != EOF && c != term; c = getc (fp))
+ {
+ if (count == name_buffer_length)
+ name_buffer = x2realloc (name_buffer, &name_buffer_length);
+ name_buffer[counter++] = c;
+ if (c == 0)
+ {
+ /* We have read a zero separator. The file possibly is
+ zero-separated */
+ return file_list_zero;
+ }
+ }