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| author | Jakub Kicinski <kuba@kernel.org> | 2022-11-18 03:19:14 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-11-18 05:30:39 +0300 |
| commit | 224b744abf9f0663ca6762a79c7298b663fa4f04 (patch) | |
| tree | 4f6a817547e7d0584d96cd539a3d63be75059cf1 /drivers/firmware/efi/libstub/smbios.c | |
| parent | b4b221bd79a1c698d9653e3ae2c3cb61cdc9aee7 (diff) | |
| parent | 847ccab8fdcf4a0cd85a278480fab1ccdc9f6136 (diff) | |
| download | linux-224b744abf9f0663ca6762a79c7298b663fa4f04.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
include/linux/bpf.h
1f6e04a1c7b8 ("bpf: Fix offset calculation error in __copy_map_value and zero_map_value")
aa3496accc41 ("bpf: Refactor kptr_off_tab into btf_record")
f71b2f64177a ("bpf: Refactor map->off_arr handling")
https://lore.kernel.org/all/20221114095000.67a73239@canb.auug.org.au/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/firmware/efi/libstub/smbios.c')
| -rw-r--r-- | drivers/firmware/efi/libstub/smbios.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/firmware/efi/libstub/smbios.c b/drivers/firmware/efi/libstub/smbios.c new file mode 100644 index 000000000000..460418b7f5f5 --- /dev/null +++ b/drivers/firmware/efi/libstub/smbios.c @@ -0,0 +1,48 @@ +// SPDX-License-Identifier: GPL-2.0-only +// Copyright 2022 Google LLC +// Author: Ard Biesheuvel <ardb@google.com> + +#include <linux/efi.h> + +#include "efistub.h" + +typedef struct efi_smbios_protocol efi_smbios_protocol_t; + +struct efi_smbios_protocol { + efi_status_t (__efiapi *add)(efi_smbios_protocol_t *, efi_handle_t, + u16 *, struct efi_smbios_record *); + efi_status_t (__efiapi *update_string)(efi_smbios_protocol_t *, u16 *, + unsigned long *, u8 *); + efi_status_t (__efiapi *remove)(efi_smbios_protocol_t *, u16); + efi_status_t (__efiapi *get_next)(efi_smbios_protocol_t *, u16 *, u8 *, + struct efi_smbios_record **, + efi_handle_t *); + + u8 major_version; + u8 minor_version; +}; + +const u8 *__efi_get_smbios_string(u8 type, int offset, int recsize) +{ + struct efi_smbios_record *record; + efi_smbios_protocol_t *smbios; + efi_status_t status; + u16 handle = 0xfffe; + const u8 *strtable; + + status = efi_bs_call(locate_protocol, &EFI_SMBIOS_PROTOCOL_GUID, NULL, + (void **)&smbios) ?: + efi_call_proto(smbios, get_next, &handle, &type, &record, NULL); + if (status != EFI_SUCCESS) + return NULL; + + strtable = (u8 *)record + recsize; + for (int i = 1; i < ((u8 *)record)[offset]; i++) { + int len = strlen(strtable); + + if (!len) + return NULL; + strtable += len + 1; + } + return strtable; +} |