When overwriting an existing time base authenticated variable we should
compare to the preceding time value and not to the start of the epoch.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
The UEFI specification requires that when UEFI variables are set using time
based authentication we have to check that unused fields of the timestamp
are zero
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Just for style consistency, replace all the uses of debug() to
EFI_PRINT in efi_variable.c.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
efi_get_variable_common() does not use EFI_ENTRY(). So we should not use
EFI_EXIT() either.
Fixes: 767f6eeb01 ("efi_loader: variable: support variable authentication")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
The variables SetupMode, AuditMode, DeployedMode are explicitly defined as
UINT8 in the UEFI specification. The type of SecureBoot is UINT8 in EDK2.
Use variable name secure_boot instead of sec_boot for the value of the
UEFI variable SecureBoot.
Avoid abbreviations in function descriptions.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Variable efi_secure_mode is meant to hold a value of enum efi_secure_mode.
So it should not be defined as int but as enum efi_secure_mode.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
The global variable, efi_guid_cert_type_pkcs7, will also be used in
efi_image_loader.c in a succeeding patch so as to correctly handle
a signature type of authenticode in signed image.
Meanwhile, it is currently defined in efi_variable.c. Once some secure
storage solution for UEFI variables is introduced, efi_variable.c may
not always be compiled in.
So move the definition to efi_signature.c as a common place.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Remove unnecessary debug() from efi_set_variable_common().
native_name is NULL, so there is no meaning to print it.
Signed-off-by: Pragnesh Patel <pragnesh.patel@sifive.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
We should not use typedefs in U-Boot. They cannot be used as forward
declarations which means that header files must include the full header to
access them.
Drop the typedef and rename the struct to remove the _s suffix which is
now not useful.
This requires quite a few header-file additions.
Signed-off-by: Simon Glass <sjg@chromium.org>
The only error case is that a given UUID is in wrong format.
So just return EFI_INVALID_PARAMETER here.
Reported-by: Coverity (CID 300333)
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
efi_variable_parse_signature() returns NULL on error, so IS_ERR()
is an incorrect check. The goto err leads to pkcs7_free_message(),
which works fine on a NULL ptr.
Signed-off-by: Patrick Wildt <patrick@blueri.se>
Reviewed-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
There is no need to call efi_get_variable() instead of
efi_get_variable_common(). So let's use the internal function.
Move forward declarations to the top of the file.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Eliminate superfluous functions efi_set_volatile_variable() and
efi_set_nonvolatile_variable().
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Eliminate superfluous functions efi_get_volatile_variable() and
efi_get_nonvolatile_variable().
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
efi_set_secure_stat() provides the common code for each stat transition
caused by efi_transfer_secure_state().
Suggested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Correct description of return value.
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Pkcs7_parse.h and x509_parser.h are used in UEFI subsystem, in particular,
secure boot. So move them to include/crypto to avoid relative paths.
Suggested-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Don't include include x509_parser.h twice.
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
The following variable is exported as UEFI specification defines:
VendorKeys: whether the system is configured to use only vendor-provided
keys or not
The value will have to be modified if a platform has its own way of
initializing signature database, in particular, PK.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
UEFI specification defines several global variables which are related to
the current secure boot state. In this commit, those values will be
maintained according to operations. Currently, AuditMode and DeployedMode
are defined but not implemented.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
With this commit, EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS
is supported for authenticated variables and the system secure state
will transfer between setup mode and user mode as UEFI specification
section 32.3 describes.
Internally, authentication data is stored as part of authenticated
variable's value. It is nothing but a pkcs7 message (but we need some
wrapper, see efi_variable_parse_signature()) and will be validated by
efi_variable_authenticate(), hence efi_signature_verify_with_db().
Associated time value will be encoded in "{...,time=...}" along with
other UEFI variable's attributes.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
'vendor' is both an input and an output parameter. So it cannot be
constant.
Fixes: 0bda81bfdc ("efi_loader: use const efi_guid_t * for variable services")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
The runtime service GetNextVariable() returns the length of the next
variable including the closing 0x0000. This length should be in bytes.
Comparing the output of EDK2 and U-Boot shows that this is currently not
correctly implemented:
EDK2:
OsIndicationsSupported: 46
PlatformLang: 26
PlatformLangCodes: 36
U-Boot:
OsIndicationsSupported: 23
PlatformLang: 13
PlatformLangCodes: 18
Provide correct length in GetNextVariable().
Fixes: d99a87f84b ("efi_loader: implement GetNextVariableName()")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Drop inclusion of crc.h in common.h and use the correct header directly
instead.
With this we can drop the conflicting definition in fw_env.h and rely on
the crc.h header, which is already included.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
'make tests' on an 32bit ARM system leads to
In file included from ../lib/efi_loader/efi_variable.c:9:
../include/malloc.h:364:7: error: conflicting types for ‘memset’
void* memset(void*, int, size_t);
^~~~~~
In file included from ../include/compiler.h:126,
from ../include/env.h:12,
from ../lib/efi_loader/efi_variable.c:8:
../include/linux/string.h:103:15:
note: previous declaration of ‘memset’ was here
extern void * memset(void *,int,__kernel_size_t);
^~~~~~
In file included from ../lib/efi_loader/efi_variable.c:9:
../include/malloc.h:365:7: error: conflicting types for ‘memcpy’
void* memcpy(void*, const void*, size_t);
^~~~~~
In file included from ../include/compiler.h:126,
from ../include/env.h:12,
from ../lib/efi_loader/efi_variable.c:8:
../include/linux/string.h:106:15:
note: previous declaration of ‘memcpy’ was here
extern void * memcpy(void *,const void *,__kernel_size_t);
^~~~~~
Use common.h as first include as recommended by the U-Boot coding style
guide.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Appending to a non-existent variable must result in an error of type
EFI_NOT_FOUND.
Fixes: 09c76b79a9db ("efi_loader: SetVariable() deleting variables")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
APPEND_WRITE with data length zero is allowable according to the UEFI
specification.
The EDK2 interpretation of no access attributes is attributes = 0. As
the UEFI specification is vague in this respect let's stick to EDK2 here.
Fixes: commit 6d2f27c5fd ("efi_loader: variable: support APPEND_WRITE")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
We always have to return via EFI_EXIT() from EFIAPI functions.
Coverity reported an unreachable line and a resource leak.
Fixes: commit 6d2f27c5fd ("efi_loader: variable: support APPEND_WRITE")
Reported-by: Coverity Scan CID 253575, CID 184095
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
If EFI_VARIABLE_APPEND_WRITE is specified in attributes at
efi_set_variable(), specified data will be appended to the variable's
original value. Attributes other than APPEND_WRITE should not be
modified.
With this patch, APPEND_WRITE test in 'variables' selftest will pass.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
This file contains lots of internal details about the environment. Most
code can include env.h instead, calling the functions there as needed.
Rename this file and add a comment at the top to indicate its internal
nature.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
[trini: Fixup apalis-tk1.c]
Signed-off-by: Tom Rini <trini@konsulko.com>
Add missing parameter descriptions.
Remove an invalid link.
Correct the formatting of a function comment.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Our variable services are only provided at boottime. Therefore when
leaving boottime the variable function are replaced by dummy functions
returning EFI_UNSUPPORTED. Move this patching of the runtime table to the
variable services implementation. Executed it in ExitBootServices().
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Let's keep similar things together.
Move efi_query_variable_info() to lib/efi_loader/efi_variable.c
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Return EFI_INVALID_PARAMETER if the variable name has zero length or the
variable has runtime access but not boottime access.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
The attribute, EFI_VARIABLE_NON_VOLATILE, should be encoded as "nv" flag
in U-Boot variable if specified.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
If a variable already exists, efi_set_variable() should not change
the variable's attributes. This patch enforces it.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
The current efi_st_variable() doesn't support EFI_VARIABLE_APPEND_WRITE
attiribute for now, and so should return an error.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Fix typos is commit message.
Add TODO comment.
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
UEFI spec 2.7 erratum A leaves it undefined if Attributes should be set if
GetVariable() returns EFI_BUFFER_TOO_SMALL.
UEFI spec 2.8 defines that Attributes should be set if the return value is
either EFI_SUCCESS or EFI_BUFFER_TOO_SMALL.
Set Attributes if the return value is EFI_BUFFER_TOO_SMALL.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
For debug messages inside EFI API functions we should use the EFI_PRINT
macro which gives us well aligned output like:
EFI: Entry efi_get_variable("PlatformLang" ...)
EFI: get 'efi_8be4df61-93ca-11d2-aa0d-00e098032b8c_PlatformLang'
EFI: Exit: efi_get_variable: 14
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Add a missing return statement in efi_get_next_variable_name().
Reported-by: Coverity (CID 185834)
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Our current implementation of GetNextVariableName() first collects all EFI
variables. If none is found at all hexport_r() returns a zero length string
terminated by \0 and the value 1 as number of bytes in the returned buffer.
In this case GetNextVariableName() has to return EFI_NOT_FOUND.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
The current GetNextVariableName() is a placeholder.
With this patch, it works well as expected.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
rebased on efi-next
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
Comment the functions implementing the runtime variable services.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
