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+/******************************************************************************
+ *
+ * Module Name: aslfileio - File I/O support
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2012, 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 "aslcompiler.h"
+
+#define _COMPONENT ACPI_COMPILER
+ ACPI_MODULE_NAME ("aslfileio")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: AslAbort
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Dump the error log and abort the compiler. Used for serious
+ * I/O errors.
+ *
+ ******************************************************************************/
+
+void
+AslAbort (
+ void)
+{
+
+ AePrintErrorLog (ASL_FILE_STDERR);
+ if (Gbl_DebugFlag)
+ {
+ /* Print error summary to stdout also */
+
+ AePrintErrorLog (ASL_FILE_STDOUT);
+ }
+
+ exit (1);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: FlFileError
+ *
+ * PARAMETERS: FileId - Index into file info array
+ * ErrorId - Index into error message array
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Decode errno to an error message and add the entire error
+ * to the error log.
+ *
+ ******************************************************************************/
+
+void
+FlFileError (
+ UINT32 FileId,
+ UINT8 ErrorId)
+{
+
+ sprintf (MsgBuffer, "\"%s\" (%s)", Gbl_Files[FileId].Filename,
+ strerror (errno));
+ AslCommonError (ASL_ERROR, ErrorId, 0, 0, 0, 0, NULL, MsgBuffer);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: FlOpenFile
+ *
+ * PARAMETERS: FileId - Index into file info array
+ * Filename - file pathname to open
+ * Mode - Open mode for fopen
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Open a file.
+ * NOTE: Aborts compiler on any error.
+ *
+ ******************************************************************************/
+
+void
+FlOpenFile (
+ UINT32 FileId,
+ char *Filename,
+ char *Mode)
+{
+ FILE *File;
+
+
+ File = fopen (Filename, Mode);
+ if (!File)
+ {
+ FlFileError (FileId, ASL_MSG_OPEN);
+ AslAbort ();
+ }
+
+ Gbl_Files[FileId].Filename = Filename;
+ Gbl_Files[FileId].Handle = File;
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: FlGetFileSize
+ *
+ * PARAMETERS: FileId - Index into file info array
+ *
+ * RETURN: File Size
+ *
+ * DESCRIPTION: Get current file size. Uses seek-to-EOF. File must be open.
+ *
+ ******************************************************************************/
+
+UINT32
+FlGetFileSize (
+ UINT32 FileId)
+{
+ FILE *fp;
+ UINT32 FileSize;
+ long Offset;
+
+
+ fp = Gbl_Files[FileId].Handle;
+ Offset = ftell (fp);
+
+ fseek (fp, 0, SEEK_END);
+ FileSize = (UINT32) ftell (fp);
+
+ /* Restore file pointer */
+
+ fseek (fp, Offset, SEEK_SET);
+ return (FileSize);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: FlReadFile
+ *
+ * PARAMETERS: FileId - Index into file info array
+ * Buffer - Where to place the data
+ * Length - Amount to read
+ *
+ * RETURN: Status. AE_ERROR indicates EOF.
+ *
+ * DESCRIPTION: Read data from an open file.
+ * NOTE: Aborts compiler on any error.
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+FlReadFile (
+ UINT32 FileId,
+ void *Buffer,
+ UINT32 Length)
+{
+ UINT32 Actual;
+
+
+ /* Read and check for error */
+
+ Actual = fread (Buffer, 1, Length, Gbl_Files[FileId].Handle);
+ if (Actual < Length)
+ {
+ if (feof (Gbl_Files[FileId].Handle))
+ {
+ /* End-of-file, just return error */
+
+ return (AE_ERROR);
+ }
+
+ FlFileError (FileId, ASL_MSG_READ);
+ AslAbort ();
+ }
+
+ return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: FlWriteFile
+ *
+ * PARAMETERS: FileId - Index into file info array
+ * Buffer - Data to write
+ * Length - Amount of data to write
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Write data to an open file.
+ * NOTE: Aborts compiler on any error.
+ *
+ ******************************************************************************/
+
+void
+FlWriteFile (
+ UINT32 FileId,
+ void *Buffer,
+ UINT32 Length)
+{
+ UINT32 Actual;
+
+
+ /* Write and check for error */
+
+ Actual = fwrite ((char *) Buffer, 1, Length, Gbl_Files[FileId].Handle);
+ if (Actual != Length)
+ {
+ FlFileError (FileId, ASL_MSG_WRITE);
+ AslAbort ();
+ }
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: FlPrintFile
+ *
+ * PARAMETERS: FileId - Index into file info array
+ * Format - Printf format string
+ * ... - Printf arguments
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Formatted write to an open file.
+ * NOTE: Aborts compiler on any error.
+ *
+ ******************************************************************************/
+
+void
+FlPrintFile (
+ UINT32 FileId,
+ char *Format,
+ ...)
+{
+ INT32 Actual;
+ va_list Args;
+
+
+ va_start (Args, Format);
+
+ Actual = vfprintf (Gbl_Files[FileId].Handle, Format, Args);
+ va_end (Args);
+
+ if (Actual == -1)
+ {
+ FlFileError (FileId, ASL_MSG_WRITE);
+ AslAbort ();
+ }
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: FlSeekFile
+ *
+ * PARAMETERS: FileId - Index into file info array
+ * Offset - Absolute byte offset in file
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Seek to absolute offset.
+ * NOTE: Aborts compiler on any error.
+ *
+ ******************************************************************************/
+
+void
+FlSeekFile (
+ UINT32 FileId,
+ long Offset)
+{
+ int Error;
+
+
+ Error = fseek (Gbl_Files[FileId].Handle, Offset, SEEK_SET);
+ if (Error)
+ {
+ FlFileError (FileId, ASL_MSG_SEEK);
+ AslAbort ();
+ }
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: FlCloseFile
+ *
+ * PARAMETERS: FileId - Index into file info array
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Close an open file. Aborts compiler on error
+ *
+ ******************************************************************************/
+
+void
+FlCloseFile (
+ UINT32 FileId)
+{
+ int Error;
+
+
+ if (!Gbl_Files[FileId].Handle)
+ {
+ return;
+ }
+
+ Error = fclose (Gbl_Files[FileId].Handle);
+ if (Error)
+ {
+ FlFileError (FileId, ASL_MSG_CLOSE);
+ AslAbort ();
+ }
+
+ Gbl_Files[FileId].Handle = NULL;
+ return;
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: FlDeleteFile
+ *
+ * PARAMETERS: FileId - Index into file info array
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Delete a file.
+ *
+ ******************************************************************************/
+
+void
+FlDeleteFile (
+ UINT32 FileId)
+{
+ ASL_FILE_INFO *Info = &Gbl_Files[FileId];
+
+
+ if (!Info->Filename)
+ {
+ return;
+ }
+
+ if (remove (Info->Filename))
+ {
+ printf ("%s (%s file) ",
+ Info->Filename, Info->Description);
+ perror ("Could not delete");
+ }
+
+ Info->Filename = NULL;
+ return;
+}
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