[sheepdog] [PATCH 1/2] sheep: use xwrite to avoid short write

[Liu Yuan]

From: Liu Yuan <tailai.ly at taobao.com>

Also add one liner to emphasis that we piggyback the ctime onto epoch file

Signed-off-by: Liu Yuan <tailai.ly at taobao.com>
---
 sheep/store.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/sheep/store.c b/sheep/store.c
index 52c4716..d5a080b 100644
--- a/sheep/store.c
+++ b/sheep/store.c
@@ -68,13 +68,14 @@ int update_epoch_log(uint32_t epoch, struct sd_node *nodes, size_t nr_nodes)
 	}
 
 	len = nr_nodes * sizeof(struct sd_node);
-	ret = write(fd, (char *)nodes, len);
+	ret = xwrite(fd, (char *)nodes, len);
 	if (ret != len)
 		goto err;
 
+	/* Piggyback the epoch creation time for 'collie cluster info' */
 	time(&t);
 	len = sizeof(t);
-	ret = write(fd, (char *)&t, len);
+	ret = xwrite(fd, (char *)&t, len);
 	if (ret != len)
 		goto err;
 
-- 
1.7.10.2