file: when writing a file make sure it's contents are stored

Fixes problems with ubi(fs).

Signed-off-by: Luka Perkov <luka@openwrt.org>

1 files changed, 7 insertions, 1 deletions

diff --git a/file.c b/file.c
index 8eef2b5..f9c65a2 100644
--- a/file.c
+++ b/file.c
@@ -214,8 +214,14 @@ rpc_file_write(struct ubus_context *ctx, struct ubus_object *obj,
 	if ((fd = open(blobmsg_data(tb[RPC_F_PATH]), O_CREAT | O_TRUNC | O_WRONLY)) < 0)
 		return rpc_errno_status();
 
-	write(fd, blobmsg_data(tb[RPC_F_DATA]), blobmsg_data_len(tb[RPC_F_DATA]));
+	if (write(fd, blobmsg_data(tb[RPC_F_DATA]), blobmsg_data_len(tb[RPC_F_DATA])) < 0)
+		return rpc_errno_status();
+
+	if (fsync(fd) < 0)
+		return rpc_errno_status();
+
 	close(fd);
+	sync();
 
 	return 0;
 }