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Mon, 18 Sep 2023 06:08:40 -0700 X-Received: from drhqmail201.nvidia.com (10.126.190.180) by drhqmail202.nvidia.com (10.126.190.181) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.41; Mon, 18 Sep 2023 06:08:40 -0700 X-Received: from NV-CL38DL3.nvidia.com (10.127.8.14) by mail.nvidia.com (10.126.190.180) with Microsoft SMTP Server id 15.2.986.41 via Frontend Transport; Mon, 18 Sep 2023 06:08:39 -0700 From: "Nickle Wang via groups.io" To: CC: Abner Chang , Igor Kulchytskyy , "Nick Ramirez" Subject: [edk2-devel] [PATCH] RedfishPkg/JsonLib: fix JsonObjectGetValue issue Date: Mon, 18 Sep 2023 21:08:38 +0800 Message-ID: <20230918130838.6137-1-nicklew@nvidia.com> MIME-Version: 1.0 X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN1PEPF0002636E:EE_|LV8PR12MB9156:EE_ X-MS-Office365-Filtering-Correlation-Id: 43be57cf-2515-42b0-43e3-08dbb8486613 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam-Message-Info: 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 X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Sep 2023 13:08:49.1501 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 43be57cf-2515-42b0-43e3-08dbb8486613 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.233];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SN1PEPF0002636E.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV8PR12MB9156 Precedence: Bulk List-Subscribe: List-Help: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,nicklew@nvidia.com List-Unsubscribe-Post: List-Unsubscribe=One-Click List-Unsubscribe: X-Gm-Message-State: wrGHZ4JqsFHwECL4mmHCTkm7x1787277AA= Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1695042535242100001 Content-Type: text/plain; charset="utf-8" JsonObjectGetValue() cannot find corresponding JSON value when the EDKII_JSON_VALUE object is created by another UEFI driver. This is because "hashtable_seed" is initialized by current time while JsonLib is loaded. So, "hashtable_seed" will be different in each individual UEFI driver. Signed-off-by: Nickle Wang Cc: Abner Chang Cc: Igor Kulchytskyy Cc: Nick Ramirez Reviewed-by: Igor Kulchytskyy --- RedfishPkg/Library/JsonLib/JsonLib.inf | 1 + RedfishPkg/Library/JsonLib/JsonLib.c | 34 ++++++++++++++++++++++++++ 2 files changed, 35 insertions(+) diff --git a/RedfishPkg/Library/JsonLib/JsonLib.inf b/RedfishPkg/Library/Js= onLib/JsonLib.inf index 9d52a622e13a..b0d1bcac7cb3 100644 --- a/RedfishPkg/Library/JsonLib/JsonLib.inf +++ b/RedfishPkg/Library/JsonLib/JsonLib.inf @@ -15,6 +15,7 @@ MODULE_TYPE =3D DXE_DRIVER VERSION_STRING =3D 1.0 LIBRARY_CLASS =3D JsonLib|DXE_DRIVER UEFI_APPLICATION U= EFI_DRIVER + CONSTRUCTOR =3D JsonLibConstructor =20 # # VALID_ARCHITECTURES =3D IA32 X64 ARM AARCH64 RISCV64 diff --git a/RedfishPkg/Library/JsonLib/JsonLib.c b/RedfishPkg/Library/Json= Lib/JsonLib.c index 9b758b940293..a7ec2ab217a6 100644 --- a/RedfishPkg/Library/JsonLib/JsonLib.c +++ b/RedfishPkg/Library/JsonLib/JsonLib.c @@ -19,6 +19,8 @@ =20 #include "jansson.h" =20 +extern volatile UINT32 hashtable_seed; + /** The function is used to initialize a JSON value which contains a new JSO= N array, or NULL on error. Initially, the array is empty. @@ -1138,3 +1140,35 @@ JsonGetType ( { return (EDKII_JSON_TYPE)(((json_t *)JsonValue)->type); } + +/** + JSON Library constructor. + + @param ImageHandle The image handle. + @param SystemTable The system table. + + @retval EFI_SUCCESS Protocol listener is registered successfully. + +**/ +EFI_STATUS +EFIAPI +JsonLibConstructor ( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable + ) +{ + // + // hashtable_seed is initalized by current time while JsonLib is loaded. + // Due to above mechanism, hashtable_seed will be different in each indi= vidual + // UEFI driver. As the result, the hash of same key in different UEFI dr= iver + // would be different. This breaks JsonObjectGetValue() because + // JsonObjectGetValue() won't be able to find corresponding JSON value if + // this EDKII_JSON_VALUE is created by another UEFI driver. + // + // Initial the seed to a fixed magic value for JsonLib to be working in = all + // UEFI drivers. + // + hashtable_seed =3D 0xFDAE2143; + + return EFI_SUCCESS; +} --=20 2.17.1 -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#108777): https://edk2.groups.io/g/devel/message/108777 Mute This Topic: https://groups.io/mt/101432663/1787277 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org] -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-