X.Org Bug 10632 / Debian Bug 256299: race condition in policy.c:Willing()

X.Org Bugzilla #10632 <https://bugs.freedesktop.org/show_bug.cgi?id=10632>
Reported upstream from
Debian Bug #256299 <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=256299>

1 files changed, 2 insertions, 1 deletions

diff --git a/policy.c b/policy.c
index c18103d..a9d4bcf 100644
--- a/policy.c
+++ b/policy.c
@@ -140,8 +140,9 @@ Willing (
 	    if ((fd = popen(willing, "r")))
 	    {
 		char *s = NULL;
+		errno = 0;
 		while(!(s = fgets(statusBuf, 256, fd)) && errno == EINTR)
-			;
+			errno = 0;
 		if (s && strlen(statusBuf) > 0)
 			statusBuf[strlen(statusBuf)-1] = 0; /* chop newline */
 		else