FreeCalypso > hg > freecalypso-tools

annotate ffstools/tiffs-rd/object.c @ 926:6a0aa8d36d06

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rvinterf backslash escape: introduce libprint The new helper function library named libprint is meant to replace the badly misnamed libg23, and will soon contain functions for printing all of the same kinds of GPF TST packets that are now handled in libg23. However, we are also moving safe_print_trace() from libasync to this new library, and changing it to emit our new backslash escape format.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 23 May 2023 03:47:46 +0000
parents 1f27fc13eab7
children
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rev   line source
0
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1 /*
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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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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 #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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17 {
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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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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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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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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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90 return(p - i);
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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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97 return(p); /* bogon, allows the rest to continue */
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98 }
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Mychaela Falconia <falcon@freecalypso.org>
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99
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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>
parents:
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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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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>
parents:
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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>
parents:
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116 struct inode_info *inf;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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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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diff changeset
119 chi->start = inf->dataptr;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
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 }