FreeCalypso > hg > freecalypso-sw

annotate ffstools/tiffs-rd/inode.c @ 992:a7b0b426f9ca

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target-utils: boot ROM UART autodetection revamped The new implementation should work with both the familiar Calypso C035 boot ROM version found in our regular targets as well as the older Calypso F741979B version found on the vintage D-Sample board.
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Wed, 30 Dec 2015 21:28:41 +0000
parents 024042383a26
children 09b8b2327838
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
231
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1 /*
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2 * This C module implements the reading and decoding of inode information.
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3 */
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4
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5 #include <sys/types.h>
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6 #include <endian.h>
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7 #include <stdio.h>
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8 #include <stdlib.h>
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9 #include <string.h>
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10 #include <strings.h>
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11 #include "types.h"
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12 #include "struct.h"
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13 #include "globals.h"
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14
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15 u8 blank_flash_line[16] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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16 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
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17
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18 alloc_inode_table()
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19 {
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20 inode_info = malloc(sizeof(struct inode_info *) * inode_limit);
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21 if (!inode_info) {
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22 perror("malloc of inode table");
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23 exit(1);
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24 }
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25 bzero(inode_info, sizeof(struct inode_info *) * inode_limit);
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26 }
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27
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28 static int
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29 convert_ptr(in, infp)
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30 int in;
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31 int *infp;
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32 {
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33 if (in == 0xFFFF) {
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34 *infp = 0;
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35 return(0);
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36 }
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37 if (in < 1 || in >= inode_limit)
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38 return(-1);
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39 *infp = in;
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40 return(1);
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41 }
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42
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43 validate_inode(ino)
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44 {
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45 struct inode_flash *fl;
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46 struct inode_info *inf;
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47
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48 if (ino < 1 || ino >= inode_limit)
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49 return(0);
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50 if (inode_info[ino])
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51 return(1);
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52 fl = (struct inode_flash *)inode_block + ino;
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53 if (!bcmp(fl, blank_flash_line, sizeof blank_flash_line))
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54 return(0);
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55 inf = malloc(sizeof(struct inode_info));
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56 if (!inf) {
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57 perror("malloc of struct inode_info");
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58 exit(1);
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59 }
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60 bzero(inf, sizeof(struct inode_info));
234
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61 inf->ino = ino;
231
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62 inf->len = le16toh(fl->len);
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63 if (inf->len & 0xF) {
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64 fprintf(stderr,
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65 "warning: inode #%x: invalid length, skipping\n", ino);
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66 free(inf);
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67 return(0);
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68 }
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69 inf->type = fl->type;
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70 switch (inf->type) {
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71 case 0x00:
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72 break;
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73 case 0xE1:
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74 case 0xF1:
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75 case 0xF2:
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76 case 0xF3:
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77 case 0xF4:
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78 if (!inf->len) {
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79 fprintf(stderr,
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80 "warning: inode #%x: non-deleted object has zero length, skipping\n",
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81 ino);
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82 free(inf);
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83 return(0);
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84 }
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85 break;
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86 default:
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87 fprintf(stderr,
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88 "warning: inode #%x: unexpected object type %02X, skipping\n",
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89 ino, inf->type);
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90 free(inf);
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91 return(0);
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92 }
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93 if (convert_ptr(le16toh(fl->descend), &inf->descend) < 0) {
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94 fprintf(stderr,
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95 "warning: inode #%x: invalid descend pointer, skipping\n",
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96 ino);
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97 free(inf);
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98 return(0);
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99 }
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100 if (convert_ptr(le16toh(fl->sibling), &inf->sibling) < 0) {
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101 fprintf(stderr,
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102 "warning: inode #%x: invalid sibling pointer, skipping\n",
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103 ino);
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104 free(inf);
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105 return(0);
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106 }
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107 if (inf->len) {
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108 inf->rawloc = le32toh(fl->dataptr);
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109 if (inf->rawloc > 0x0FFFFFFF) {
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110 invdptr: fprintf(stderr,
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111 "warning: inode #%x: invalid data pointer, skipping\n",
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112 ino);
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113 free(inf);
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114 return(0);
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115 }
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116 inf->offset = inf->rawloc << 4;
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117 if (inf->offset >= total_ffs_size)
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118 goto invdptr;
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119 if (inf->offset + inf->len > total_ffs_size) {
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120 fprintf(stderr,
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121 "warning: inode #%x: data pointer + length > FFS total size, skipping\n",
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122 ino);
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123 free(inf);
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124 return(0);
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125 }
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126 inf->dataptr = image + inf->offset;
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127 }
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128 inode_info[ino] = inf;
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129 return(1);
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130 }
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131
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132 find_root_inode()
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133 {
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134 int ino;
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135
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136 if (root_inode) {
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137 if (!validate_inode(root_inode)) {
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138 fprintf(stderr,
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139 "error: root inode specified with -r is invalid\n");
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140 exit(1);
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
141 }
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
142 return(1);
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
143 }
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
144 for (ino = 1; ino < inode_limit; ino++) {
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
145 if (!validate_inode(ino))
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
146 continue;
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
147 if (inode_info[ino]->type != 0xF2)
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
148 continue;
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
149 if (*inode_info[ino]->dataptr != '/')
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
150 continue;
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
151 root_inode = ino;
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
152 if (verbose)
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
153 fprintf(stderr, "Found root inode at #%x\n", ino);
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
154 if (inode_info[ino]->sibling)
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
155 fprintf(stderr,
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
156 "warning: root inode #%x has a non-null sibling pointer\n",
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
157 ino);
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
158 return(0);
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
159 }
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
160 fprintf(stderr, "error: no root inode found; try -r\n");
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
161 exit(1);
5ceacdbd4490 tiffs IVA: finds the root inode
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
162 }