FreeCalypso > hg > freecalypso-reveng
annotate pirollback/journal.c @ 308:f8344bc4fd61
dspanal: char2coff utility written, compiles
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 28 Oct 2019 05:20:50 +0000 |
parents | 78ac405716db |
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rev | line source |
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1 #include <sys/types.h> |
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2 #include <endian.h> |
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3 #include <stdio.h> |
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4 #include <string.h> |
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5 #include <strings.h> |
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6 #include <stdlib.h> |
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7 #include <unistd.h> |
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8 #include "types.h" |
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9 #include "struct.h" |
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10 |
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11 extern u8 image[0x480000]; |
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12 extern struct inode_info inode[]; |
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13 extern int last_inode; |
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14 extern u8 blank_flash_line[16]; |
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15 |
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16 int journal_start_ino; |
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17 |
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18 find_journal() |
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19 { |
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20 int ino; |
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21 struct inode_info *inf; |
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22 |
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23 for (ino = 2; ino <= last_inode; ino++) { |
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24 inf = inode + ino; |
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25 if (inf->type == 0xE1 && inf->parent == 1 && |
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26 !strcmp(inf->dataptr, ".journal")) |
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27 return(ino); |
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28 } |
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29 fprintf(stderr, "error: cannot find /.journal\n"); |
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30 exit(1); |
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31 } |
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32 |
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33 parse_journal() |
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34 { |
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35 struct inode_info *inf; |
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36 struct journal_entry *jr, *endp; |
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37 int ino = 0; |
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38 u16 tempu16; |
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39 s16 temps16; |
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40 |
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41 inf = inode + find_journal(); |
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42 if (inf->len != 0x4010) { |
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43 fprintf(stderr, |
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44 "error: /.journal file length differs from expected\n"); |
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45 exit(1); |
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46 } |
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47 jr = (struct journal_entry *)(inf->dataptr + 0xC); |
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48 for (endp = jr + 0x3FF; jr < endp; jr++) { |
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49 if (!bcmp(jr, blank_flash_line, 16)) |
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50 break; |
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51 if (jr->status != 0xF1) { |
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52 fprintf(stderr, |
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53 "journal record at %x: status byte != F1\n", |
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54 (u8 *) jr - image); |
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55 exit(1); |
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56 } |
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57 tempu16 = le16toh(jr->this_ino); |
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58 if (ino) { |
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59 ino++; |
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60 if (ino != tempu16) { |
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61 fprintf(stderr, |
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62 "journal record at %x: break in inode # sequence\n", |
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63 (u8 *) jr - image); |
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64 exit(1); |
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65 } |
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66 } else { |
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67 ino = tempu16; |
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68 journal_start_ino = ino; |
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69 } |
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70 if (ino < 3 || ino > last_inode) { |
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71 fprintf(stderr, |
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72 "journal record at %x: inode # out of range\n", |
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73 (u8 *) jr - image); |
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74 exit(1); |
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75 } |
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76 inf = inode + ino; |
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77 inf->jflash = jr; |
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78 if (inf->type) { |
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79 if (jr->objtype != inf->type) { |
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80 fprintf(stderr, |
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81 "journal record at %x: type mismatch\n", |
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82 (u8 *) jr - image); |
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83 exit(1); |
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84 } |
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85 } else { |
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86 switch (jr->objtype) { |
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87 case 0xE1: |
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88 case 0xF1: |
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89 case 0xF2: |
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90 case 0xF4: |
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91 break; |
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92 default: |
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93 fprintf(stderr, |
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94 "journal record at %x: unexpected type byte value\n", |
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95 (u8 *) jr - image); |
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96 exit(1); |
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97 } |
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98 inf->type = jr->objtype; |
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99 } |
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100 if (le32toh(jr->location) != inf->rawloc) { |
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101 fprintf(stderr, |
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102 "journal record at %x: location field mismatch\n", |
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103 (u8 *) jr - image); |
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104 exit(1); |
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105 } |
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106 if (le16toh(jr->size) != inf->len) { |
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107 fprintf(stderr, |
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108 "journal record at %x: size field mismatch\n", |
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109 (u8 *) jr - image); |
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110 exit(1); |
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111 } |
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112 temps16 = le16toh(jr->link_ptr); |
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113 if (temps16 < -last_inode || temps16 > last_inode) { |
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114 fprintf(stderr, |
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115 "journal record at %x: linkptr field out of range\n", |
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116 (u8 *) jr - image); |
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117 exit(1); |
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118 } |
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119 inf->j_unlink_ptr = temps16; |
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120 temps16 = le16toh(jr->replacee); |
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121 if (temps16 < 0 || temps16 > last_inode) { |
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122 fprintf(stderr, |
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123 "journal record at %x: replacee field out of range\n", |
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124 (u8 *) jr - image); |
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125 exit(1); |
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126 } |
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127 inf->j_oldver = temps16; |
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128 if (jr->repli) { |
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129 fprintf(stderr, |
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130 "journal record at %x: last 16-bit word is not zero as expected\n", |
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131 (u8 *) jr - image); |
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132 exit(1); |
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133 } |
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134 } |
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135 if (!ino) { |
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136 fprintf(stderr, "error: journal is empty!\n"); |
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137 exit(1); |
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138 } |
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139 if (ino != last_inode) { |
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140 fprintf(stderr, "error: journal end != inode block end\n"); |
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141 exit(1); |
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142 } |
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143 } |