From 9483729328d4aa2986a94aa38668495fbe113b93 Mon Sep 17 00:00:00 2001
From: yuanyongjian <yuanyongjian@xiaomi.com>
Date: Wed, 13 Dec 2023 21:06:24 +0800
Subject: [PATCH] syslog/ramlog.c:Syslog add BIOC_FLUSH supports clearing log
 cache

Signed-off-by: yuanyongjian <yuanyongjian@xiaomi.com>
---
 drivers/syslog/ramlog.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/syslog/ramlog.c b/drivers/syslog/ramlog.c
index 4bb602e380..5e84fc8fad 100644
--- a/drivers/syslog/ramlog.c
+++ b/drivers/syslog/ramlog.c
@@ -487,6 +487,9 @@ static int ramlog_file_ioctl(FAR struct file *filep, int cmd,
       case PIPEIOC_POLLINTHRD:
         upriv->rl_threashold = (uint32_t)arg;
         break;
+      case BIOC_FLUSH:
+        priv->rl_header->rl_head = 0;
+        break;
       default:
         ret = -ENOTTY;
         break;