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author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-06-03 23:12:27 +0200 |
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committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-06-03 23:12:27 +0200 |
commit | 0e36d43c9c87554cdb18aa865eec9edccda17324 (patch) | |
tree | dc2c2cfacca0e9c53ca8148dc91676a30be3f010 /tools/power/acpi/common/cmfsize.c | |
parent | b04c58b1ed26317bfb4b33d3a2d16377fc6acd0f (diff) | |
parent | 729ddb657f6a47a2cb6e495f1ff68fff622c758a (diff) | |
download | op-kernel-dev-0e36d43c9c87554cdb18aa865eec9edccda17324.zip op-kernel-dev-0e36d43c9c87554cdb18aa865eec9edccda17324.tar.gz |
Merge branch 'acpica'
* acpica: (63 commits)
ACPICA: Namespace: Remove _PRP method support.
ACPI: Fix x86 regression related to early mapping size limitation
ACPICA: Tables: Add mechanism to control early table checksum verification.
ACPICA: acpidump: Fix repetitive table dump in -n mode.
ACPI: Clean up acpi_os_map/unmap_memory() to eliminate __iomem.
ACPICA: Clean up redudant definitions already defined elsewhere
ACPICA: Linux headers: Add <asm/acenv.h> to remove mis-ordered inclusion of <asm/acpi.h>
ACPICA: Linux headers: Add <acpi/platform/aclinuxex.h>
ACPICA: Linux headers: Remove ACPI_PREEMPTION_POINT() due to no usages.
ACPICA: Update version to 20140424.
ACPICA: Comment/format update, no functional change.
ACPICA: Events: Update GPE handling and initialization code.
ACPICA: Remove extraneous error message for large number of GPEs.
ACPICA: Tables: Remove old mechanism to validate if XSDT contains NULL entries.
ACPICA: Tables: Add new mechanism to skip NULL entries in RSDT and XSDT.
ACPICA: acpidump: Add support to force using RSDT.
ACPICA: Back port of improvements on exception code.
ACPICA: Back port of _PRP update.
ACPICA: acpidump: Fix truncated RSDP signature validation.
ACPICA: Linux header: Add support for stubbed externals.
...
Diffstat (limited to 'tools/power/acpi/common/cmfsize.c')
-rw-r--r-- | tools/power/acpi/common/cmfsize.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/tools/power/acpi/common/cmfsize.c b/tools/power/acpi/common/cmfsize.c new file mode 100644 index 0000000..5140e5e --- /dev/null +++ b/tools/power/acpi/common/cmfsize.c @@ -0,0 +1,101 @@ +/****************************************************************************** + * + * Module Name: cfsize - Common get file size function + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2014, Intel Corp. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + */ + +#include <acpi/acpi.h> +#include "accommon.h" +#include "acapps.h" +#include <stdio.h> + +#define _COMPONENT ACPI_TOOLS +ACPI_MODULE_NAME("cmfsize") + +/******************************************************************************* + * + * FUNCTION: cm_get_file_size + * + * PARAMETERS: file - Open file descriptor + * + * RETURN: File Size. On error, -1 (ACPI_UINT32_MAX) + * + * DESCRIPTION: Get the size of a file. Uses seek-to-EOF. File must be open. + * Does not disturb the current file pointer. Uses perror for + * error messages. + * + ******************************************************************************/ +u32 cm_get_file_size(FILE * file) +{ + long file_size; + long current_offset; + + /* Save the current file pointer, seek to EOF to obtain file size */ + + current_offset = ftell(file); + if (current_offset < 0) { + goto offset_error; + } + + if (fseek(file, 0, SEEK_END)) { + goto seek_error; + } + + file_size = ftell(file); + if (file_size < 0) { + goto offset_error; + } + + /* Restore original file pointer */ + + if (fseek(file, current_offset, SEEK_SET)) { + goto seek_error; + } + + return ((u32)file_size); + +offset_error: + perror("Could not get file offset"); + return (ACPI_UINT32_MAX); + +seek_error: + perror("Could not seek file"); + return (ACPI_UINT32_MAX); +} |