| /* |
| * Copyright 2012 Google Inc. |
| * |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but without any warranty; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| #include <libpayload.h> |
| #include <lzma.h> |
| #include <vboot_api.h> |
| |
| #include "vboot/util/flag.h" |
| |
| uint32_t VbExIsShutdownRequested(void) |
| { |
| int lidsw = flag_fetch(FLAG_LIDSW); |
| int pwrsw = flag_fetch(FLAG_PWRSW); |
| uint32_t shutdown_request = 0; |
| |
| if (lidsw < 0 || pwrsw < 0) { |
| // There isn't any way to return an error, so just hang. |
| printf("Failed to fetch lid or power switch flag.\n"); |
| halt(); |
| } |
| |
| if (!lidsw) { |
| printf("Lid is closed.\n"); |
| shutdown_request |= VB_SHUTDOWN_REQUEST_LID_CLOSED; |
| } |
| if (pwrsw) { |
| printf("Power key pressed.\n"); |
| shutdown_request |= VB_SHUTDOWN_REQUEST_POWER_BUTTON; |
| } |
| |
| return shutdown_request; |
| } |
| |
| VbError_t VbExDecompress(void *inbuf, uint32_t in_size, |
| uint32_t compression_type, |
| void *outbuf, uint32_t *out_size) |
| { |
| switch (compression_type) { |
| case COMPRESS_NONE: |
| if (*out_size < in_size) { |
| printf("Output buffer too small.\n"); |
| return VBERROR_UNKNOWN; |
| } |
| memcpy(outbuf, inbuf, in_size); |
| *out_size = in_size; |
| break; |
| case COMPRESS_EFIv1: |
| printf("EFIv1 compression not supported.\n"); |
| return VBERROR_UNKNOWN; |
| case COMPRESS_LZMA1: |
| *out_size = ulzman(inbuf, in_size, outbuf, *out_size); |
| if (!*out_size) { |
| printf("Error doing LZMA decompression.\n"); |
| return VBERROR_UNKNOWN; |
| } |
| break; |
| default: |
| printf("Unrecognized compression type %d.\n", |
| compression_type); |
| return VBERROR_INVALID_PARAMETER; |
| } |
| return VBERROR_SUCCESS; |
| } |