FreeCalypso > hg > freecalypso-tools

annotate ffstools/tiffs-rd/object.c @ 619:f82551c77e58

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libserial-newlnx: ASYNC_LOW_LATENCY patch reverted Reports from Das Signal indicate that loadtools performance on Debian is about the same as on Slackware, and that including or omitting the ASYNC_LOW_LATENCY patch from Serg makes no difference. Because the patch in question does not appear to be necessary, it is being reverted until and unless someone other than Serg reports an actual real-world system on which loadtools operation times are slowed compared to the Mother's Slackware reference and on which Slackware-like performance can be restored by setting the ASYNC_LOW_LATENCY flag.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 27 Feb 2020 01:09:48 +0000
parents e7502631a0f9
children 1f27fc13eab7
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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Mychaela Falconia <falcon@freecalypso.org>
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3 */
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4
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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5 #include <sys/types.h>
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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6 #include <ctype.h>
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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7 #include <stdio.h>
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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8 #include <stdlib.h>
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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9 #include <string.h>
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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10 #include <strings.h>
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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11 #include "types.h"
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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12 #include "struct.h"
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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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
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Mychaela Falconia <falcon@freecalypso.org>
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16 validate_obj_name(ino, root_special)
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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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Mychaela Falconia <falcon@freecalypso.org>
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20 int c;
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Mychaela Falconia <falcon@freecalypso.org>
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21
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22 if (!inf->len)
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Mychaela Falconia <falcon@freecalypso.org>
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23 return(0);
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Mychaela Falconia <falcon@freecalypso.org>
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24 p = inf->dataptr;
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Mychaela Falconia <falcon@freecalypso.org>
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25 endp = p + inf->len;
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26 for (; ; p++) {
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27 if (p >= endp)
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28 return(0);
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29 c = *p;
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30 if (!c)
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31 break;
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Mychaela Falconia <falcon@freecalypso.org>
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32 if (c < ' ' || c > '~')
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33 return(0);
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34 if (root_special || isalnum(c))
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35 continue;
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36 switch (c) {
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37 case '.':
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38 case ',':
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Mychaela Falconia <falcon@freecalypso.org>
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39 case '_':
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Mychaela Falconia <falcon@freecalypso.org>
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40 case '-':
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Mychaela Falconia <falcon@freecalypso.org>
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41 case '+':
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Mychaela Falconia <falcon@freecalypso.org>
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42 case '%':
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Mychaela Falconia <falcon@freecalypso.org>
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43 case '$':
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Mychaela Falconia <falcon@freecalypso.org>
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44 case '#':
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45 continue;
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46 default:
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47 return(0);
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48 }
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49 }
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Mychaela Falconia <falcon@freecalypso.org>
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50 if (!root_special) {
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Mychaela Falconia <falcon@freecalypso.org>
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51 c = p - inf->dataptr;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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52 if (c < 1 || c > MAX_FN_COMPONENT)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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53 return(0);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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54 if (!strcmp(inf->dataptr, ".") || !strcmp(inf->dataptr, ".."))
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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55 return(0);
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Mychaela Falconia <falcon@freecalypso.org>
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56 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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57 inf->byte_after_name = p + 1;
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parents:
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58 return(1);
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59 }
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60
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61 u8 *
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62 find_end_of_chunk(inf)
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Mychaela Falconia <falcon@freecalypso.org>
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63 struct inode_info *inf;
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64 {
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65 u8 *p;
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Mychaela Falconia <falcon@freecalypso.org>
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66 int i;
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67
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68 p = inf->dataptr + inf->len;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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69 for (i = 1; i <= 16; i++) {
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70 if (!p[-i])
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71 return(p - i);
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parents:
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72 if (p[-i] != 0xFF)
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parents:
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73 break;
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Mychaela Falconia <falcon@freecalypso.org>
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74 }
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75 fprintf(stderr,
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76 "error: chunk @%x (inode #%x): no valid termination found\n",
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Mychaela Falconia <falcon@freecalypso.org>
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77 inf->offset, inf->ino);
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Mychaela Falconia <falcon@freecalypso.org>
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78 return(p); /* bogon, allows the rest to continue */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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79 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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80
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parents:
diff changeset
81 size_head_chunk(inf, chi)
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82 struct inode_info *inf;
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83 struct chunkinfo *chi;
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84 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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85 chi->start = inf->byte_after_name;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
86 chi->end = find_end_of_chunk(inf);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
87 if (chi->start >= chi->end) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
88 chi->len = 0;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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89 return(0);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
90 } else {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
91 chi->len = chi->end - chi->start;
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Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
92 return(1);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
93 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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94 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
95
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
96 size_extra_chunk(inf, chi)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
97 struct inode_info *inf;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
98 struct chunkinfo *chi;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
99 {
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parents:
diff changeset
100 chi->start = inf->dataptr;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
101 chi->end = find_end_of_chunk(inf);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
102 chi->len = chi->end - chi->start;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
103 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
104
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
105 void
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
106 iterate_seg_file(seghead, callback, callback_data, deleted, verbose)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
107 void (*callback)();
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
108 u_long callback_data;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
109 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
110 int ino;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
111 struct inode_info *inf;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
112
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
113 for (ino = inode_info[seghead]->descend; ino; ino = inf->descend) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
114 loop: if (!validate_inode(ino)) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
115 fprintf(stderr,
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
116 "error: following seg file hit invalid inode #%x\n",
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
117 ino);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
118 return;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
119 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
120 inf = inode_info[ino];
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
121 switch (inf->type) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
122 case 0xF4:
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
123 callback(inf, callback_data);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 continue;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 case 0x00:
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 if (deleted) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 if (inf->len)
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 callback(inf, callback_data);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129 else
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130 fprintf(stderr,
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131 "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
132 ino);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133 continue;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 if (!inf->sibling) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 fprintf(stderr,
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 "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
138 ino);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
139 return;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
141 if (verbose)
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 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
143 ino, inf->sibling);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 ino = inf->sibling;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145 goto loop;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 default:
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 fprintf(stderr,
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148 "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
149 ino, inf->type);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150 return;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
151 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153 }