1 /****************************************************************************** 2 * 3 * Module Name: efihello - very simple ACPICA/EFI integration example 4 * 5 *****************************************************************************/ 6 7 /* 8 * Copyright (C) 2000 - 2017, Intel Corp. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions, and the following disclaimer, 16 * without modification. 17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 * substantially similar to the "NO WARRANTY" disclaimer below 19 * ("Disclaimer") and any redistribution must be conditioned upon 20 * including a substantially similar Disclaimer requirement for further 21 * binary redistribution. 22 * 3. Neither the names of the above-listed copyright holders nor the names 23 * of any contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * Alternatively, this software may be distributed under the terms of the 27 * GNU General Public License ("GPL") version 2 as published by the Free 28 * Software Foundation. 29 * 30 * NO WARRANTY 31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 * POSSIBILITY OF SUCH DAMAGES. 42 */ 43 44 #include "acpi.h" 45 #include "accommon.h" 46 #include "acapps.h" 47 48 49 #define LINE_SIZE 256 50 static char LineBuffer[LINE_SIZE]; 51 52 /****************************************************************************** 53 * 54 * FUNCTION: main 55 * 56 * PARAMETERS: argc/argv - Standard argc/argv 57 * 58 * RETURN: Status 59 * 60 * DESCRIPTION: C main function for efihello 61 * 62 ******************************************************************************/ 63 64 #ifndef _GNU_EFI 65 int ACPI_SYSTEM_XFACE 66 main ( 67 int argc, 68 char *argv[]) 69 #else 70 int ACPI_SYSTEM_XFACE 71 acpi_main ( 72 int argc, 73 char *argv[]) 74 #endif 75 { 76 ACPI_FILE File; 77 BOOLEAN DoCloseFile = FALSE; 78 char *Result; 79 80 81 AcpiOsInitialize (); 82 83 printf ("argc=%d\n", argc); 84 85 if (argc > 1) 86 { 87 File = fopen (argv[1], "r"); 88 if (!File) 89 { 90 printf ("Failed to open %s.\n", argv[1]); 91 return (-1); 92 } 93 DoCloseFile = TRUE; 94 } 95 else 96 { 97 File = stdin; 98 } 99 100 while (1) 101 { 102 Result = fgets (LineBuffer, LINE_SIZE, File); 103 if (!Result) 104 { 105 printf ("Failed to read %s.\n", argv[1]); 106 fclose (File); 107 return (-2); 108 } 109 110 printf ("%s", LineBuffer); 111 112 if (strncmp (Result, "exit", 4) == 0) 113 { 114 break; 115 } 116 } 117 118 119 if (DoCloseFile) 120 { 121 fclose (File); 122 } 123 return (0); 124 } 125