Buffering should truncate if read() returns 0 since it's not a valid return there as there should be data left to read. The loop wouldn't break until there was a message in the queue. I just experienced the case with crosslinked files and read stopped making progress, returning 0 each time it was called.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29626 a1c6a512-1295-4272-9138-f99709370657

apps/buffering.c

@@ -691,7 +691,7 @@ static bool buffer_handle(int handle_id, size_t to_buffer)
         /* rc is the actual amount read */
         int rc = read(h->fd, &buffer[h->widx], copy_n);
 
-        if (rc < 0) {
+        if (rc <= 0) {
             /* Some kind of filesystem error, maybe recoverable if not codec */
             if (h->type == TYPE_CODEC) {
                 logf("Partial codec");