- select(mdstat_fd >2 ? mdstat_fd+1:3, NULL, NULL, &fds, &tm);
+ select(maxfd + 1, NULL, NULL, &fds, &tm);
+}
+
+void mdstat_wait_fd(int fd, const sigset_t *sigmask)
+{
+ fd_set fds, rfds;
+ int maxfd = fd;
+
+ FD_ZERO(&fds);
+ FD_ZERO(&rfds);
+ if (mdstat_fd >= 0)
+ FD_SET(mdstat_fd, &fds);
+ if (fd >= 0) {
+ struct stat stb;
+ fstat(fd, &stb);
+ if ((stb.st_mode & S_IFMT) == S_IFREG)
+ /* Must be a /proc or /sys fd, so expect
+ * POLLPRI
+ * i.e. an 'exceptional' event.
+ */
+ FD_SET(fd, &fds);
+ else
+ FD_SET(fd, &rfds);
+ }
+ if (mdstat_fd > maxfd)
+ maxfd = mdstat_fd;
+
+ pselect(maxfd + 1, &rfds, NULL, &fds,
+ NULL, sigmask);
+}
+
+int mddev_busy(int devnum)
+{
+ struct mdstat_ent *mdstat = mdstat_read(0, 0);
+ struct mdstat_ent *me;
+
+ for (me = mdstat ; me ; me = me->next)
+ if (me->devnum == devnum)
+ break;
+ free_mdstat(mdstat);
+ return me != NULL;