X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=mdstat.c;h=8de51cf755fa0e718f321d54c3714abd92f04cd9;hb=4a06e2c270948bdcfaa447c8a0e80abb0978b5c4;hp=ebdfc67bf6d46705e1ebcb74212299b2aa47b66c;hpb=6c766cf10178b9bae4ddcfd6b8de2d70f9d84568;p=thirdparty%2Fmdadm.git

diff --git a/mdstat.c b/mdstat.c
index ebdfc67b..8de51cf7 100644
--- a/mdstat.c
+++ b/mdstat.c
@@ -280,8 +280,18 @@ void mdstat_wait_fd(int fd, const sigset_t *sigmask)
 	FD_ZERO(&rfds);
 	if (mdstat_fd >= 0)
 		FD_SET(mdstat_fd, &fds);
-	if (fd >= 0)
-		FD_SET(fd, &rfds);
+	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;