Add ignore handler for SIGHUP in lldpcli

lldpcli which is execed by lldpd is expected to resume lldpd operations.
But in some cases, lldpcli can exiting because of SIGHUP.  This fixes
these cases.

Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Kanna Rajagopal <kanna@cumulusnetworks.com>
Signed-off-by: Sam Tannous <stannous@cumulusnetworks.com>

diff --git a/src/client/lldpcli.c b/src/client/lldpcli.c
index 5e0d027e666a0acccfbb87554e21370746faffd0..4737591811d2b51c836685ec8ff95d2d57f10cfb 100644 (file)
--- a/src/client/lldpcli.c
+++ b/src/client/lldpcli.c
@@ -29,6 +29,7 @@
 #include <arpa/inet.h>
 #include <libgen.h>
 #include <dirent.h>
+#include <signal.h>
 #include <sys/queue.h>
 
 #include "client.h"
@@ -426,6 +427,8 @@ main(int argc, char *argv[])
 
        ctlname = lldpctl_get_default_transport();
 
+       signal(SIGHUP, SIG_IGN);
+
        /* Initialize logging */
        while ((ch = getopt(argc, argv, options)) != -1) {
                switch (ch) {

diff --git a/src/daemon/lldpd.c b/src/daemon/lldpd.c
index d9575b961f5f96b2104161705ef4c341106b8105..05e323a4c0ba328cc869082d926349b82dc6d35a 100644 (file)
--- a/src/daemon/lldpd.c
+++ b/src/daemon/lldpd.c
@@ -1471,6 +1471,9 @@ lldpd_main(int argc, char *argv[], char *envp[])
        /* Disable SIGPIPE */
        signal(SIGPIPE, SIG_IGN);
 
+       /* Disable SIGHUP, until handlers are installed */
+       signal(SIGHUP, SIG_IGN);
+
        /* Configuration with lldpcli */
        if (lldpcli) {
                log_debug("main", "invoking lldpcli for configuration");