FreeCalypso > hg > freecalypso-tools

annotate target-utils/libtiffs/findfile.c @ 995:74024eb17e04

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
fc-loadtool help: improve language regarding 16 MiB flash chips In FC project history, 16 MiB flash originally meant Pirelli DP-L10. Then we got FCDEV3B with the same flash (our own design), but now we are discovering more Calypso devices that used such large flash, both late Calypso era (Sony Ericsson K2x0) as well as much earlier ones (FIC FLUID devices.txt file with 2004 dates, Leonardo+ rev 5). Hence we need to migrate to more generic or neutral language in associated documentation, without giving elevated status to specific examples that drove our early project history.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 03 Dec 2023 21:11:12 +0000
parents 87cb03b35f77
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 #include <sys/types.h>
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2 #include "types.h"
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3 #include "struct.h"
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4 #include "globals.h"
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5 #include "macros.h"
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6
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7 static u8 *
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Mychaela Falconia <falcon@freecalypso.org>
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8 find_endofchunk(ino)
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9 {
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10 struct inode *irec = tiffs_active_index + ino;
0
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11 u8 *p;
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12 int i;
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13
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14 p = inode_to_dataptr(irec) + irec->len;
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Mychaela Falconia <falcon@freecalypso.org>
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15 for (i = 0; i < 16; i++) {
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16 p--;
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17 if (!*p)
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18 return(p);
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19 if (*p != 0xFF)
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20 break;
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21 }
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22 printf("Error: inode #%x has no valid termination\n", ino);
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23 return(p); /* XXX */
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24 }
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25
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26 tiffs_find_file(pathname, startret, sizeret, continue_ret)
0
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27 char *pathname;
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28 u8 **startret;
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29 size_t *sizeret;
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30 int *continue_ret;
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31 {
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32 int ino, cont;
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33 struct inode *irec;
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34 u8 *start, *end;
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35 int size;
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36
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37 ino = tiffs_pathname_to_inode(pathname);
0
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38 if (ino <= 0)
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39 return(-1);
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40 irec = tiffs_active_index + ino;
0
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41 if (irec->type != OBJTYPE_FILE) {
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42 printf("Error: %s is not a regular file\n", pathname);
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43 return(-1);
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44 }
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45 start = inode_to_dataptr(irec);
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46 start += strlen(start) + 1;
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47 end = find_endofchunk(ino);
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48 size = end - start;
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49 if (size < 0)
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50 size = 0;
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51 cont = irec->descend;
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52 if (cont == 0xFFFF)
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53 cont = 0;
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54 if (startret)
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55 *startret = start;
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56 if (sizeret)
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57 *sizeret = size;
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58 if (continue_ret)
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59 *continue_ret = cont;
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60 return(0);
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61 }
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62
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63 tiffs_get_segment(ino, startret, sizeret, continue_ret)
0
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64 int ino;
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65 u8 **startret;
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66 size_t *sizeret;
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67 int *continue_ret;
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68 {
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69 int cont;
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70 struct inode *irec;
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71 u8 *start, *end;
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72 int size;
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73
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74 for (;;) {
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75 irec = tiffs_active_index + ino;
0
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76 if (irec->type)
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77 break;
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78 if (irec->sibling == 0xFFFF) {
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79 printf("Error: segment inode #%d: deleted and no sibling\n",
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80 ino);
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81 return(-1);
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82 }
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83 ino = irec->sibling;
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84 }
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85 if (irec->type != OBJTYPE_SEGMENT) {
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diff changeset
86 printf("Error: inode #%x is not a segment\n", ino);
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87 return(-1);
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88 }
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89 start = inode_to_dataptr(irec);
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Mychaela Falconia <falcon@freecalypso.org>
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90 end = find_endofchunk(ino);
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91 size = end - start;
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92 if (size <= 0) {
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93 printf("Error: segment inode #%x: bad length\n", ino);
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parents:
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94 return(-1);
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95 }
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96 cont = irec->descend;
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97 if (cont == 0xFFFF)
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98 cont = 0;
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99 if (startret)
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Mychaela Falconia <falcon@freecalypso.org>
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100 *startret = start;
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Mychaela Falconia <falcon@freecalypso.org>
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101 if (sizeret)
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Mychaela Falconia <falcon@freecalypso.org>
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102 *sizeret = size;
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Mychaela Falconia <falcon@freecalypso.org>
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103 if (continue_ret)
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Mychaela Falconia <falcon@freecalypso.org>
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104 *continue_ret = cont;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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105 return(0);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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106 }