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[PATCH 4/4] block/export: avoid g_return_val_if() input validation
From: |
Stefan Hajnoczi |
Subject: |
[PATCH 4/4] block/export: avoid g_return_val_if() input validation |
Date: |
Wed, 18 Nov 2020 09:16:44 +0000 |
Do not validate input with g_return_val_if(). This API is intended for
checking programming errors and is compiled out with -DG_DISABLE_CHECKS.
Use an explicit if statement for input validation so it cannot
accidentally be compiled out.
Suggested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
block/export/vhost-user-blk-server.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/block/export/vhost-user-blk-server.c
b/block/export/vhost-user-blk-server.c
index 62672d1cb9..d143ce8993 100644
--- a/block/export/vhost-user-blk-server.c
+++ b/block/export/vhost-user-blk-server.c
@@ -267,7 +267,9 @@ vu_blk_get_config(VuDev *vu_dev, uint8_t *config, uint32_t
len)
VuServer *server = container_of(vu_dev, VuServer, vu_dev);
VuBlkExport *vexp = container_of(server, VuBlkExport, vu_server);
- g_return_val_if_fail(len <= sizeof(struct virtio_blk_config), -1);
+ if (len > sizeof(struct virtio_blk_config)) {
+ return -1;
+ }
memcpy(config, &vexp->blkcfg, len);
return 0;
--
2.28.0
- [PATCH 0/4] vhost-user: avoid g_return_val_if() in get/set_config(), Stefan Hajnoczi, 2020/11/18
- [PATCH 1/4] contrib/vhost-user-blk: avoid g_return_val_if() input validation, Stefan Hajnoczi, 2020/11/18
- [PATCH 2/4] contrib/vhost-user-gpu: avoid g_return_val_if() input validation, Stefan Hajnoczi, 2020/11/18
- [PATCH 3/4] contrib/vhost-user-input: avoid g_return_val_if() input validation, Stefan Hajnoczi, 2020/11/18
- [PATCH 4/4] block/export: avoid g_return_val_if() input validation,
Stefan Hajnoczi <=
- Re: [PATCH 0/4] vhost-user: avoid g_return_val_if() in get/set_config(), Marc-André Lureau, 2020/11/18
- Re: [PATCH 0/4] vhost-user: avoid g_return_val_if() in get/set_config(), Markus Armbruster, 2020/11/18
- Re: [PATCH 0/4] vhost-user: avoid g_return_val_if() in get/set_config(), Stefano Garzarella, 2020/11/23