Ray, It's for build only but not supposed to be *used* in a platform. If a platform really wants a RngLib, the owners need to change the instance to a proper one. ASSERT will tell them that. Otherwise, the RngLib interface should not be called.
Regards, Jian > -----Original Message----- > From: Ni, Ray <ray...@intel.com> > Sent: Tuesday, November 12, 2019 2:30 PM > To: Wang, Jian J <jian.j.w...@intel.com>; devel@edk2.groups.io > Cc: Yao, Jiewen <jiewen....@intel.com>; Zhang, Chao B > <chao.b.zh...@intel.com>; Kinney, Michael D <michael.d.kin...@intel.com>; > Gao, Liming <liming....@intel.com>; Laszlo Ersek <ler...@redhat.com>; Ard > Biesheuvel <ard.biesheu...@linaro.org> > Subject: RE: [PATCH] SecurityPkg/RngLibNull: add null version of RngLib > > Jian, > If we expect platform to use this library, probably "ASSERT(FALSE)" is not > proper. > > > -----Original Message----- > > From: Wang, Jian J <jian.j.w...@intel.com> > > Sent: Tuesday, November 12, 2019 1:56 PM > > To: devel@edk2.groups.io > > Cc: Yao, Jiewen <jiewen....@intel.com>; Zhang, Chao B > > <chao.b.zh...@intel.com>; Kinney, Michael D > > <michael.d.kin...@intel.com>; Gao, Liming <liming....@intel.com>; Laszlo > > Ersek <ler...@redhat.com>; Ard Biesheuvel <ard.biesheu...@linaro.org>; > > Ni, Ray <ray...@intel.com> > > Subject: [PATCH] SecurityPkg/RngLibNull: add null version of RngLib > > > > This is null version of RngLib which is used for those platforms or > > components > > which don't need random number. > > > > Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1871 > > Cc: Jiewen Yao <jiewen....@intel.com> > > Cc: Chao Zhang <chao.b.zh...@intel.com> > > Cc: Michael D Kinney <michael.d.kin...@intel.com> > > Cc: Liming Gao <liming....@intel.com> > > Cc: Laszlo Ersek <ler...@redhat.com> > > Cc: Ard Biesheuvel <ard.biesheu...@linaro.org> > > Cc: Ray Ni <ray...@intel.com> > > Signed-off-by: Jian J Wang <jian.j.w...@intel.com> > > --- > > .../RngLibNull/RngLibNull.c | 95 +++++++++++++++++++ > > .../RngLibNull/RngLibNull.inf | 31 ++++++ > > .../RngLibNull/RngLibNull.uni | 14 +++ > > 3 files changed, 140 insertions(+) > > create mode 100644 > > SecurityPkg/RandomNumberGenerator/RngLibNull/RngLibNull.c > > create mode 100644 > > SecurityPkg/RandomNumberGenerator/RngLibNull/RngLibNull.inf > > create mode 100644 > > SecurityPkg/RandomNumberGenerator/RngLibNull/RngLibNull.uni > > > > diff --git a/SecurityPkg/RandomNumberGenerator/RngLibNull/RngLibNull.c > > b/SecurityPkg/RandomNumberGenerator/RngLibNull/RngLibNull.c > > new file mode 100644 > > index 0000000000..13677abc84 > > --- /dev/null > > +++ b/SecurityPkg/RandomNumberGenerator/RngLibNull/RngLibNull.c > > @@ -0,0 +1,95 @@ > > +/** @file > > + Null version of Random number generator services. > > + > > +Copyright (c) 2019, Intel Corporation. All rights reserved.<BR> > > +SPDX-License-Identifier: BSD-2-Clause-Patent > > + > > +**/ > > + > > +#include <Library/BaseLib.h> > > +#include <Library/DebugLib.h> > > +#include <Library/RngLib.h> > > + > > +/** > > + Generates a 16-bit random number. > > + > > + if Rand is NULL, then ASSERT(). > > + > > + @param[out] Rand Buffer pointer to store the 16-bit random value. > > + > > + @retval TRUE Random number generated successfully. > > + @retval FALSE Failed to generate the random number. > > + > > +**/ > > +BOOLEAN > > +EFIAPI > > +GetRandomNumber16 ( > > + OUT UINT16 *Rand > > + ) > > +{ > > + ASSERT (FALSE); > > + return FALSE; > > +} > > + > > +/** > > + Generates a 32-bit random number. > > + > > + if Rand is NULL, then ASSERT(). > > + > > + @param[out] Rand Buffer pointer to store the 32-bit random value. > > + > > + @retval TRUE Random number generated successfully. > > + @retval FALSE Failed to generate the random number. > > + > > +**/ > > +BOOLEAN > > +EFIAPI > > +GetRandomNumber32 ( > > + OUT UINT32 *Rand > > + ) > > +{ > > + ASSERT (FALSE); > > + return FALSE; > > +} > > + > > +/** > > + Generates a 64-bit random number. > > + > > + if Rand is NULL, then ASSERT(). > > + > > + @param[out] Rand Buffer pointer to store the 64-bit random value. > > + > > + @retval TRUE Random number generated successfully. > > + @retval FALSE Failed to generate the random number. > > + > > +**/ > > +BOOLEAN > > +EFIAPI > > +GetRandomNumber64 ( > > + OUT UINT64 *Rand > > + ) > > +{ > > + ASSERT (FALSE); > > + return FALSE; > > +} > > + > > +/** > > + Generates a 128-bit random number. > > + > > + if Rand is NULL, then ASSERT(). > > + > > + @param[out] Rand Buffer pointer to store the 128-bit random value. > > + > > + @retval TRUE Random number generated successfully. > > + @retval FALSE Failed to generate the random number. > > + > > +**/ > > +BOOLEAN > > +EFIAPI > > +GetRandomNumber128 ( > > + OUT UINT64 *Rand > > + ) > > +{ > > + ASSERT (FALSE); > > + return FALSE; > > +} > > diff --git a/SecurityPkg/RandomNumberGenerator/RngLibNull/RngLibNull.inf > > b/SecurityPkg/RandomNumberGenerator/RngLibNull/RngLibNull.inf > > new file mode 100644 > > index 0000000000..f6494cdb82 > > --- /dev/null > > +++ b/SecurityPkg/RandomNumberGenerator/RngLibNull/RngLibNull.inf > > @@ -0,0 +1,31 @@ > > +## @file > > +# Null instance of RNG (Random Number Generator) Library. > > +# > > +# Copyright (c) 2019, Intel Corporation. All rights reserved.<BR> # # > > +SPDX-License-Identifier: BSD-2-Clause-Patent # ## > > + > > +[Defines] > > + INF_VERSION = 0x00010005 > > + BASE_NAME = RngLibNull > > + MODULE_UNI_FILE = RngLibNull.uni > > + FILE_GUID = CD8991F8-2061-4084-8C9E-9C6F352DC58D > > + MODULE_TYPE = BASE > > + VERSION_STRING = 1.0 > > + LIBRARY_CLASS = RngLib > > + > > +# > > +# VALID_ARCHITECTURES = IA32 X64 ARM AARCH64 > > +# > > + > > +[Sources] > > + RngLibNull.c > > + > > +[Packages] > > + MdePkg/MdePkg.dec > > + > > +[LibraryClasses] > > + BaseLib > > + DebugLib > > diff --git > > a/SecurityPkg/RandomNumberGenerator/RngLibNull/RngLibNull.uni > > b/SecurityPkg/RandomNumberGenerator/RngLibNull/RngLibNull.uni > > new file mode 100644 > > index 0000000000..40b2ec3fe1 > > --- /dev/null > > +++ b/SecurityPkg/RandomNumberGenerator/RngLibNull/RngLibNull.uni > > @@ -0,0 +1,14 @@ > > +// /** @file > > +// Null Instance of RNG (Random Number Generator) Library. > > +// > > +// Copyright (c) 2019, Intel Corporation. All rights reserved.<BR> // > > +// SPDX-License-Identifier: BSD-2-Clause-Patent // // **/ > > + > > + > > +#string STR_MODULE_ABSTRACT #language en-US "Null Instance of > > RNG Library" > > + > > +#string STR_MODULE_DESCRIPTION #language en-US "Caution: This is > > a null version of RNG library and SHOULD NOT be used on any product ever." > > + > > -- > > 2.17.1.windows.2 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#50442): https://edk2.groups.io/g/devel/message/50442 Mute This Topic: https://groups.io/mt/54019525/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
