From fcc00615be2cf733b91147396e017d3b96cea07b Mon Sep 17 00:00:00 2001
From: ericm <ericm>
Date: Thu, 28 Aug 2003 15:25:38 +0000
Subject: [PATCH] [portals]: in handler of SIGALRM, we must reenable SIGALRM
 before longjmp, because it's automatically disabled when entering handler.

---
 lnet/lnet/api-eq.c              | 11 ++++++++++-
 lustre/portals/portals/api-eq.c | 11 ++++++++++-
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/lnet/lnet/api-eq.c b/lnet/lnet/api-eq.c
index c8734f7..9bc9c36 100644
--- a/lnet/lnet/api-eq.c
+++ b/lnet/lnet/api-eq.c
@@ -123,13 +123,22 @@ static jmp_buf eq_jumpbuf;
 
 static void eq_timeout(int signal)
 {
+        sigset_t set;
+
+        /* signal will be automatically disabled in sig handler,
+         * must enable it before long jump
+         */
+        sigemptyset(&set);
+        sigaddset(&set, SIGALRM);
+        sigprocmask(SIG_UNBLOCK, &set, NULL);
+
         longjmp(eq_jumpbuf, -1);
 }
 
 int PtlEQWait_timeout(ptl_handle_eq_t eventq_in, ptl_event_t * event_out,
                       int timeout)
 {
-        static void (*prev) (int);
+        static void (*prev) (int) = NULL;
         static int left_over;
         time_t time_at_start;
         int rc;
diff --git a/lustre/portals/portals/api-eq.c b/lustre/portals/portals/api-eq.c
index c8734f7..9bc9c36 100644
--- a/lustre/portals/portals/api-eq.c
+++ b/lustre/portals/portals/api-eq.c
@@ -123,13 +123,22 @@ static jmp_buf eq_jumpbuf;
 
 static void eq_timeout(int signal)
 {
+        sigset_t set;
+
+        /* signal will be automatically disabled in sig handler,
+         * must enable it before long jump
+         */
+        sigemptyset(&set);
+        sigaddset(&set, SIGALRM);
+        sigprocmask(SIG_UNBLOCK, &set, NULL);
+
         longjmp(eq_jumpbuf, -1);
 }
 
 int PtlEQWait_timeout(ptl_handle_eq_t eventq_in, ptl_event_t * event_out,
                       int timeout)
 {
-        static void (*prev) (int);
+        static void (*prev) (int) = NULL;
         static int left_over;
         time_t time_at_start;
         int rc;
-- 
1.8.3.1