Mercurial > yaffs-ecoscentric-gpl

annotate yportenv.h @ 326:490a804b7bd3

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Change to strnlen() and strncpy() to avoid problems from unbounded strings
author charles <charles>
date Mon, 07 Dec 2009 01:17:33 +0000
parents 887e8c0bb65c
children ce702882929d
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1 /*
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2 * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
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3 *
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4 * Copyright (C) 2002-2007 Aleph One Ltd.
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5 * for Toby Churchill Ltd and Brightstar Engineering
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6 *
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7 * Created by Charles Manning <charles@aleph1.co.uk>
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8 *
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9 * This program is free software; you can redistribute it and/or modify
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10 * it under the terms of the GNU Lesser General Public License version 2.1 as
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11 * published by the Free Software Foundation.
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12 *
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13 * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
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14 */
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17 #ifndef __YPORTENV_H__
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18 #define __YPORTENV_H__
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20 /*
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21 * Define the MTD version in terms of Linux Kernel versions
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22 * This allows yaffs to be used independantly of the kernel
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23 * as well as with it.
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24 */
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26 #define MTD_VERSION(a, b, c) (((a) << 16) + ((b) << 8) + (c))
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28 #if defined CONFIG_YAFFS_WINCE
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30 #include "ywinceenv.h"
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32 #elif defined __KERNEL__
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34 #include "moduleconfig.h"
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36 /* Linux kernel */
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38 #include <linux/version.h>
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39 #define MTD_VERSION_CODE LINUX_VERSION_CODE
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41 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19))
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42 #include <linux/config.h>
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43 #endif
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44 #include <linux/kernel.h>
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45 #include <linux/mm.h>
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46 #include <linux/sched.h>
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47 #include <linux/string.h>
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48 #include <linux/slab.h>
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49 #include <linux/vmalloc.h>
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51 #define YCHAR char
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52 #define YUCHAR unsigned char
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53 #define _Y(x) x
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54 #define yaffs_strcat(a, b) strcat(a, b)
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55 #define yaffs_strcpy(a, b) strcpy(a, b)
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56 #define yaffs_strncpy(a, b, c) strncpy(a, b, c)
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57 #define yaffs_strncmp(a, b, c) strncmp(a, b, c)
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58 #define yaffs_strnlen(s,m) strnlen(s,m)
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59 #define yaffs_sprintf sprintf
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60 #define yaffs_toupper(a) toupper(a)
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62 #define Y_INLINE inline
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64 #define YAFFS_LOSTNFOUND_NAME "lost+found"
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65 #define YAFFS_LOSTNFOUND_PREFIX "obj"
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66
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67 /* #define YPRINTF(x) printk x */
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68 #define YMALLOC(x) kmalloc(x, GFP_NOFS)
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69 #define YFREE(x) kfree(x)
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70 #define YMALLOC_ALT(x) vmalloc(x)
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71 #define YFREE_ALT(x) vfree(x)
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72 #define YMALLOC_DMA(x) YMALLOC(x)
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73
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74 /* KR - added for use in scan so processes aren't blocked indefinitely. */
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75 #define YYIELD() schedule()
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77 #define YAFFS_ROOT_MODE 0755
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78 #define YAFFS_LOSTNFOUND_MODE 0700
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80 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
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81 #define Y_CURRENT_TIME CURRENT_TIME.tv_sec
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82 #define Y_TIME_CONVERT(x) (x).tv_sec
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83 #else
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84 #define Y_CURRENT_TIME CURRENT_TIME
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85 #define Y_TIME_CONVERT(x) (x)
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86 #endif
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88 #define yaffs_SumCompare(x, y) ((x) == (y))
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89 #define yaffs_strcmp(a, b) strcmp(a, b)
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90
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91 #define TENDSTR "\n"
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92 #define TSTR(x) KERN_WARNING x
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93 #define TCONT(x) x
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94 #define TOUT(p) printk p
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96 #define yaffs_trace(mask, fmt, args...) \
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97 do { if ((mask) & (yaffs_traceMask| YAFFS_TRACE_ALWAYS)) \
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98 printk(KERN_WARNING "yaffs: " fmt, ## args); \
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99 } while (0)
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100
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101 #define compile_time_assertion(assertion) \
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102 ({ int x = __builtin_choose_expr(assertion, 0, (void)0); (void) x; })
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103
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104 #elif defined CONFIG_YAFFS_DIRECT
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105
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106 #define MTD_VERSION_CODE MTD_VERSION(2, 6, 22)
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107
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108 /* Direct interface */
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109 #include "ydirectenv.h"
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110
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111 #elif defined CONFIG_YAFFS_UTIL
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113 /* Stuff for YAFFS utilities */
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114
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115 #include "stdlib.h"
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116 #include "stdio.h"
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117 #include "string.h"
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118
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119 #include "devextras.h"
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120
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121 #define YMALLOC(x) malloc(x)
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122 #define YFREE(x) free(x)
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123 #define YMALLOC_ALT(x) malloc(x)
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124 #define YFREE_ALT(x) free(x)
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126 #define YCHAR char
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127 #define YUCHAR unsigned char
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128 #define _Y(x) x
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129 #define yaffs_strcat(a, b) strcat(a, b)
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130 #define yaffs_strcpy(a, b) strcpy(a, b)
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131 #define yaffs_strncpy(a, b, c) strncpy(a, b, c)
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132 #define yaffs_strnlen(s,m) strnlen(s,m)
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133 #define yaffs_sprintf sprintf
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134 #define yaffs_toupper(a) toupper(a)
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135
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136 #define Y_INLINE inline
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137
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138 /* #define YINFO(s) YPRINTF(( __FILE__ " %d %s\n",__LINE__,s)) */
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139 /* #define YALERT(s) YINFO(s) */
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140
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141 #define TENDSTR "\n"
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142 #define TSTR(x) x
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143 #define TOUT(p) printf p
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144
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145 #define YAFFS_LOSTNFOUND_NAME "lost+found"
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146 #define YAFFS_LOSTNFOUND_PREFIX "obj"
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147 /* #define YPRINTF(x) printf x */
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148
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149 #define YAFFS_ROOT_MODE 0755
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150 #define YAFFS_LOSTNFOUND_MODE 0700
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152 #define yaffs_SumCompare(x, y) ((x) == (y))
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153 #define yaffs_strcmp(a, b) strcmp(a, b)
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155 #else
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156 /* Should have specified a configuration type */
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157 #error Unknown configuration
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159 #endif
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161 /* see yaffs_fs.c */
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162 extern unsigned int yaffs_traceMask;
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163 extern unsigned int yaffs_wr_attempts;
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165 /*
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166 * Tracing flags.
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167 * The flags masked in YAFFS_TRACE_ALWAYS are always traced.
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168 */
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169
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170 #define YAFFS_TRACE_OS 0x00000002
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171 #define YAFFS_TRACE_ALLOCATE 0x00000004
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172 #define YAFFS_TRACE_SCAN 0x00000008
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173 #define YAFFS_TRACE_BAD_BLOCKS 0x00000010
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174 #define YAFFS_TRACE_ERASE 0x00000020
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175 #define YAFFS_TRACE_GC 0x00000040
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176 #define YAFFS_TRACE_WRITE 0x00000080
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177 #define YAFFS_TRACE_TRACING 0x00000100
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178 #define YAFFS_TRACE_DELETION 0x00000200
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179 #define YAFFS_TRACE_BUFFERS 0x00000400
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180 #define YAFFS_TRACE_NANDACCESS 0x00000800
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181 #define YAFFS_TRACE_GC_DETAIL 0x00001000
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182 #define YAFFS_TRACE_SCAN_DEBUG 0x00002000
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183 #define YAFFS_TRACE_MTD 0x00004000
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184 #define YAFFS_TRACE_CHECKPOINT 0x00008000
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185
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186 #define YAFFS_TRACE_VERIFY 0x00010000
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187 #define YAFFS_TRACE_VERIFY_NAND 0x00020000
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188 #define YAFFS_TRACE_VERIFY_FULL 0x00040000
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189 #define YAFFS_TRACE_VERIFY_ALL 0x000F0000
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190
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191
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192 #define YAFFS_TRACE_ERROR 0x40000000
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193 #define YAFFS_TRACE_BUG 0x80000000
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194 #define YAFFS_TRACE_ALWAYS 0xF0000000
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195
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196
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197 #define T(mask, p) do { if ((mask) & (yaffs_traceMask | YAFFS_TRACE_ALWAYS)) TOUT(p); } while (0)
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198
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199 #ifndef YBUG
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200 #define YBUG() do {T(YAFFS_TRACE_BUG, (TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR), __LINE__)); } while (0)
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201 #endif
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202
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203 #endif