netdev - [PATCH iproute2] ip: mroute: add fflush to print

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Date:   Fri, 26 Apr 2019 13:54:21 +0300
From:   Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
To:     netdev@...r.kernel.org
Cc:     roopa@...ulusnetworks.com, stephen@...workplumber.org,
        Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
Subject: [PATCH iproute2] ip: mroute: add fflush to print_mroute

Similar to other print functions we need to flush buffered data
in order to work with pipes and output redirects.

After this patch ip monitor mroute &>log works properly.

Signed-off-by: Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
---
 ip/ipmroute.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ip/ipmroute.c b/ip/ipmroute.c
index b29c78e4cc86..ede09ca96412 100644
--- a/ip/ipmroute.c
+++ b/ip/ipmroute.c
@@ -57,6 +57,7 @@ int print_mroute(struct nlmsghdr *n, void *arg)
 	struct rtmsg *r = NLMSG_DATA(n);
 	int len = n->nlmsg_len;
 	struct rtattr *tb[RTA_MAX+1];
+	FILE *fp = (FILE *)arg;
 	const char *src, *dst;
 	SPRINT_BUF(b1);
 	SPRINT_BUF(b2);
@@ -209,6 +210,7 @@ int print_mroute(struct nlmsghdr *n, void *arg)
 
 	print_string(PRINT_FP, NULL, "\n", NULL);
 	close_json_object();
+	fflush(fp);
 	return 0;
 }
 
-- 
2.20.1