FreeCalypso > hg > freecalypso-tools

annotate ffstools/tiffs-rd/object.c @ 950:bdd92dba7dd9

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
doc/Rvinterf-tools: document rvinterf -X option
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 07 Jun 2023 07:51:49 +0000
parents 1f27fc13eab7
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
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Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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Mychaela Falconia <falcon@freecalypso.org>
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2 * This C module implements object-level analysis.
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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 <ctype.h>
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7 #include <stdio.h>
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8 #include <stdlib.h>
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parents:
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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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Mychaela Falconia <falcon@freecalypso.org>
parents:
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14 #include "pathname.h"
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15
919
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Mychaela Falconia <falcon@freecalypso.org>
parents: 0
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16 object_name_mincheck(ino)
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Mychaela Falconia <falcon@freecalypso.org>
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17 {
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Mychaela Falconia <falcon@freecalypso.org>
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18 struct inode_info *inf = inode_info[ino];
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Mychaela Falconia <falcon@freecalypso.org>
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19 u8 *p, *endp;
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20
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21 if (!inf->len)
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22 return(0);
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23 p = inf->dataptr;
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Mychaela Falconia <falcon@freecalypso.org>
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24 endp = p + inf->len;
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Mychaela Falconia <falcon@freecalypso.org>
parents: 0
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25 for (; ; p++) {
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26 if (p >= endp)
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27 return(0);
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28 if (!*p)
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29 break;
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30 }
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31 inf->byte_after_name = p + 1;
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32 return(1);
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33 }
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34
0
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Mychaela Falconia <falcon@freecalypso.org>
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35 validate_obj_name(ino, root_special)
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36 {
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37 struct inode_info *inf = inode_info[ino];
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38 u8 *p, *endp;
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39 int c;
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40
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41 if (!inf->len)
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42 return(0);
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43 p = inf->dataptr;
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44 endp = p + inf->len;
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45 for (; ; p++) {
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46 if (p >= endp)
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47 return(0);
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48 c = *p;
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49 if (!c)
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50 break;
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51 if (c < ' ' || c > '~')
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52 return(0);
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Mychaela Falconia <falcon@freecalypso.org>
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53 if (root_special || isalnum(c))
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54 continue;
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55 switch (c) {
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56 case '.':
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57 case ',':
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58 case '_':
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59 case '-':
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60 case '+':
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61 case '%':
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62 case '$':
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63 case '#':
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64 continue;
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65 default:
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66 return(0);
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67 }
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68 }
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69 if (!root_special) {
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70 c = p - inf->dataptr;
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71 if (c < 1 || c > MAX_FN_COMPONENT)
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72 return(0);
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73 if (!strcmp(inf->dataptr, ".") || !strcmp(inf->dataptr, ".."))
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74 return(0);
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75 }
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76 inf->byte_after_name = p + 1;
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77 return(1);
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78 }
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79
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80 u8 *
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81 find_end_of_chunk(inf)
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82 struct inode_info *inf;
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83 {
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84 u8 *p;
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85 int i;
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86
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87 p = inf->dataptr + inf->len;
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88 for (i = 1; i <= 16; i++) {
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89 if (!p[-i])
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Mychaela Falconia <falcon@freecalypso.org>
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90 return(p - i);
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Mychaela Falconia <falcon@freecalypso.org>
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91 if (p[-i] != 0xFF)
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92 break;
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93 }
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94 fprintf(stderr,
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95 "error: chunk @%x (inode #%x): no valid termination found\n",
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Mychaela Falconia <falcon@freecalypso.org>
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96 inf->offset, inf->ino);
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Mychaela Falconia <falcon@freecalypso.org>
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97 return(p); /* bogon, allows the rest to continue */
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Mychaela Falconia <falcon@freecalypso.org>
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98 }
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Mychaela Falconia <falcon@freecalypso.org>
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99
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Mychaela Falconia <falcon@freecalypso.org>
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100 size_head_chunk(inf, chi)
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101 struct inode_info *inf;
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102 struct chunkinfo *chi;
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Mychaela Falconia <falcon@freecalypso.org>
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103 {
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Mychaela Falconia <falcon@freecalypso.org>
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104 chi->start = inf->byte_after_name;
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Mychaela Falconia <falcon@freecalypso.org>
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105 chi->end = find_end_of_chunk(inf);
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Mychaela Falconia <falcon@freecalypso.org>
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106 if (chi->start >= chi->end) {
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Mychaela Falconia <falcon@freecalypso.org>
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107 chi->len = 0;
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Mychaela Falconia <falcon@freecalypso.org>
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108 return(0);
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Mychaela Falconia <falcon@freecalypso.org>
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109 } else {
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Mychaela Falconia <falcon@freecalypso.org>
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110 chi->len = chi->end - chi->start;
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Mychaela Falconia <falcon@freecalypso.org>
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111 return(1);
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Mychaela Falconia <falcon@freecalypso.org>
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112 }
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Mychaela Falconia <falcon@freecalypso.org>
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113 }
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Mychaela Falconia <falcon@freecalypso.org>
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114
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Mychaela Falconia <falcon@freecalypso.org>
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115 size_extra_chunk(inf, chi)
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Mychaela Falconia <falcon@freecalypso.org>
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116 struct inode_info *inf;
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Mychaela Falconia <falcon@freecalypso.org>
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117 struct chunkinfo *chi;
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Mychaela Falconia <falcon@freecalypso.org>
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118 {
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119 chi->start = inf->dataptr;
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Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
120 chi->end = find_end_of_chunk(inf);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
121 chi->len = chi->end - chi->start;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
122 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
123
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 void
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 iterate_seg_file(seghead, callback, callback_data, deleted, verbose)
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 void (*callback)();
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 u_long callback_data;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129 int ino;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130 struct inode_info *inf;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132 for (ino = inode_info[seghead]->descend; ino; ino = inf->descend) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133 loop: if (!validate_inode(ino)) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 fprintf(stderr,
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 "error: following seg file hit invalid inode #%x\n",
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 ino);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 return;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
138 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
139 inf = inode_info[ino];
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140 switch (inf->type) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
141 case 0xF4:
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 callback(inf, callback_data);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143 continue;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 case 0x00:
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145 if (deleted) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 if (inf->len)
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 callback(inf, callback_data);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148 else
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
149 fprintf(stderr,
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150 "error: presumed deleted segment inode #%x has been reclaimed\n",
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
151 ino);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 continue;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
154 if (!inf->sibling) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155 fprintf(stderr,
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
156 "error: segment object at inode #%x: marked deleted, but no sibling\n",
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157 ino);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
158 return;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 if (verbose)
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 printf("seg inode #%x deleted, moved to #%x\n",
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162 ino, inf->sibling);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 ino = inf->sibling;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164 goto loop;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165 default:
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 fprintf(stderr,
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167 "error: inode #%x: unexpected type %02X when expecting segment (F4)\n",
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168 ino, inf->type);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169 return;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 }