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/*************************************************************************** |
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* Copyright (c) 2024 Microsoft Corporation |
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* |
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* This program and the accompanying materials are made available under the |
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* terms of the MIT License which is available at |
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* https://opensource.org/licenses/MIT. |
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* |
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* SPDX-License-Identifier: MIT |
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**************************************************************************/ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/** */ |
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/** FileX Component */ |
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/** */ |
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/** File */ |
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/** */ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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#define FX_SOURCE_CODE |
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/* Include necessary system files. */ |
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#include "fx_api.h" |
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#include "fx_file.h" |
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FX_CALLER_CHECKING_EXTERNS |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _fxe_file_read PORTABLE C */ |
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/* 6.1 */ |
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/* AUTHOR */ |
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/* */ |
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/* William E. Lamie, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* This function checks for errors in the read file call. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* file_ptr File control block pointer */ |
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/* buffer_ptr Buffer pointer */ |
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/* request_size Number of bytes requested */ |
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/* actual_size Pointer to variable for the */ |
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/* number of bytes read */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* return status */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _fx_file_read Actual file read service */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* Application Code */ |
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/* */ |
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/* RELEASE HISTORY */ |
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/* */ |
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/* DATE NAME DESCRIPTION */ |
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/* */ |
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/* 05-19-2020 William E. Lamie Initial Version 6.0 */ |
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/* 09-30-2020 William E. Lamie Modified comment(s), */ |
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/* resulting in version 6.1 */ |
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/* */ |
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/**************************************************************************/ |
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179364 |
UINT _fxe_file_read(FX_FILE *file_ptr, VOID *buffer_ptr, ULONG request_size, ULONG *actual_size) |
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{ |
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UINT status; |
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/* Check for a null file or buffer pointer. */ |
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✓✓✓✓
✓✓ |
179364 |
if ((file_ptr == FX_NULL) || (buffer_ptr == FX_NULL) || (actual_size == FX_NULL)) |
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{ |
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return(FX_PTR_ERROR); |
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} |
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/* Check for a valid caller. */ |
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✓✓✓✓
✓✓ |
179091 |
FX_CALLER_CHECKING_CODE |
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/* Call actual file read service. */ |
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178683 |
status = _fx_file_read(file_ptr, buffer_ptr, request_size, actual_size); |
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/* Return status to the caller. */ |
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178683 |
return(status); |
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} |
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