8fa2e58431
- Add shim-httpboot-support.patch to support HTTPBoot - Add shim-update-openssl-1.0.2g.patch to update openssl to 1.0.2g and Cryptlib to 5e2318dd37a51948aaf845c7d920b11f47cdcfe6 - Drop patches since they are merged into shim-update-openssl-1.0.2g.patch + shim-update-openssl-1.0.2d.patch + shim-gcc5.patch + shim-bsc950569-fix-cryptlib-va-functions.patch + shim-fix-aarch64.patch - Refresh shim-change-debug-file-path.patch - Add shim-bsc973496-mokmanager-no-append-write.patch to work around the firmware that doesn't support APPEND_WRITE (bsc973496) - shim-install : remove '\n' from the help message (bsc#991188) - shim-install : print a message if there is no valid EFI partition (bsc#991187) OBS-URL: https://build.opensuse.org/request/show/416362 OBS-URL: https://build.opensuse.org/package/show/devel:openSUSE:Factory/shim?expand=0&rev=115
104 lines
3.1 KiB
Diff
104 lines
3.1 KiB
Diff
From 3bd098ea88d36cdaa550cdd384f7a08d3586d7e5 Mon Sep 17 00:00:00 2001
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From: Gary Lin <glin@suse.com>
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Date: Thu, 28 Jul 2016 15:11:14 +0800
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Subject: [PATCH] MokManager: Remove the usage of APPEND_WRITE
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We got the bug report about the usage of APPEND_WRITE that may cause the
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failure when writing a variable in Lenovo machines. Although
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EFI_VARIABLE_APPEND_WRITE already exists in the UEFI spec for years,
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unfortunately, some vendors just ignore it and never implement the
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attribute. This commit removes the usage of EFI_VARIABLE_APPEND_WRITE to
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make MokManager work on those machines.
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https://github.com/rhinstaller/shim/issues/55
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Signed-off-by: Gary Lin <glin@suse.com>
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---
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MokManager.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++--------
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1 file changed, 48 insertions(+), 8 deletions(-)
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diff --git a/MokManager.c b/MokManager.c
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index 2de6853..9ed7b4b 100644
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--- a/MokManager.c
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+++ b/MokManager.c
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@@ -23,8 +23,6 @@
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#define SHIM_VENDOR L"Shim"
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#endif
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-#define EFI_VARIABLE_APPEND_WRITE 0x00000040
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-
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EFI_GUID SHIM_LOCK_GUID = { 0x605dab50, 0xe046, 0x4300, {0xab, 0xb6, 0x3d, 0xd8, 0x10, 0xdd, 0x8b, 0x23} };
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EFI_GUID EFI_CERT_SHA224_GUID = { 0xb6e5233, 0xa65c, 0x44c9, {0x94, 0x7, 0xd9, 0xab, 0x83, 0xbf, 0xc8, 0xbd} };
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EFI_GUID EFI_CERT_SHA384_GUID = { 0xff3e5307, 0x9fd0, 0x48c9, {0x85, 0xf1, 0x8a, 0xd5, 0x6c, 0x70, 0x1e, 0x1} };
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@@ -863,6 +861,53 @@ static EFI_STATUS match_password (PASSWORD_CRYPT *pw_crypt,
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return EFI_SUCCESS;
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}
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+static EFI_STATUS write_db (CHAR16 *db_name, void *MokNew, UINTN MokNewSize)
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+{
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+ EFI_GUID shim_lock_guid = SHIM_LOCK_GUID;
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+ EFI_STATUS status;
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+ UINT32 attributes;
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+ void *old_data = NULL;
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+ void *new_data = NULL;
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+ UINTN old_size;
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+ UINTN new_size;
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+
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+ status = get_variable_attr(db_name, (UINT8 **)&old_data, &old_size,
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+ shim_lock_guid, &attributes);
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+ if (EFI_ERROR(status) && status != EFI_NOT_FOUND) {
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+ return status;
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+ }
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+
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+ /* Check if the old db is compromised or not */
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+ if (attributes & EFI_VARIABLE_RUNTIME_ACCESS) {
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+ FreePool(old_data);
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+ old_data = NULL;
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+ old_size = 0;
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+ }
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+
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+ new_size = old_size + MokNewSize;
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+ new_data = AllocatePool(new_size);
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+ if (new_data == NULL) {
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+ status = EFI_OUT_OF_RESOURCES;
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+ goto out;
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+ }
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+
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+ CopyMem(new_data, old_data, old_size);
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+ CopyMem(new_data + old_size, MokNew, MokNewSize);
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+
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+ status = uefi_call_wrapper(RT->SetVariable, 5, db_name,
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+ &shim_lock_guid,
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+ EFI_VARIABLE_NON_VOLATILE
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+ | EFI_VARIABLE_BOOTSERVICE_ACCESS,
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+ new_size, new_data);
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+
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+out:
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+ if (old_size > 0) {
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+ FreePool(old_data);
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+ }
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+
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+ return status;
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+}
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+
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static EFI_STATUS store_keys (void *MokNew, UINTN MokNewSize, int authenticate,
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BOOLEAN MokX)
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{
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@@ -917,12 +962,7 @@ static EFI_STATUS store_keys (void *MokNew, UINTN MokNewSize, int authenticate,
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0, NULL);
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} else {
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/* Write new MOK */
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- efi_status = uefi_call_wrapper(RT->SetVariable, 5, db_name,
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- &shim_lock_guid,
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- EFI_VARIABLE_NON_VOLATILE
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- | EFI_VARIABLE_BOOTSERVICE_ACCESS
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- | EFI_VARIABLE_APPEND_WRITE,
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- MokNewSize, MokNew);
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+ efi_status = write_db(db_name, MokNew, MokNewSize);
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}
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if (efi_status != EFI_SUCCESS) {
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--
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2.9.2
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