FreeCalypso > hg > freecalypso-tools
annotate ffstools/tiffs-rd/tree.c @ 1005:9172c2c9bd3e
CHANGES: document -h target changes
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 09 Dec 2023 18:54:28 +0000 |
parents | 1f27fc13eab7 |
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1 /* |
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2 * This C module implements operations on the tree level. |
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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 <stdio.h> |
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7 #include <stdlib.h> |
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8 #include <string.h> |
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9 #include <strings.h> |
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10 #include "types.h" |
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11 #include "struct.h" |
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12 #include "globals.h" |
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13 #include "pathname.h" |
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14 |
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15 static void |
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16 visible_walk_dir(pathbuf_start, pathbuf_ptr, dirino, depth, callback) |
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17 char *pathbuf_start, *pathbuf_ptr; |
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18 void (*callback)(); |
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19 { |
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20 int ndepth = depth + 1; |
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21 int child; |
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22 struct inode_info *inf; |
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23 |
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24 if (depth > MAX_DIR_NEST) { |
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25 fprintf(stderr, |
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26 "error: max dir nesting exceeded at inode #%x\n", |
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27 dirino); |
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28 return; |
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29 } |
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30 for (child = inode_info[dirino]->descend; child; child = inf->sibling) { |
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31 if (!validate_inode(child)) { |
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32 fprintf(stderr, |
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33 "error: walk of visible tree hit invalid inode #%x\n", |
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34 child); |
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35 return; |
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36 } |
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37 inf = inode_info[child]; |
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38 switch (inf->type) { |
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39 case 0x00: |
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40 /* walking the *visible* tree: skip deleted objects */ |
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41 continue; |
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42 case 0xF4: |
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43 fprintf(stderr, |
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44 "warning: directory #%x has child #%x of type segment (F4), skipping\n", |
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45 dirino, child); |
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46 continue; |
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47 } |
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48 if (validate_obj_name(child, 0)) { |
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49 sprintf(pathbuf_ptr, "/%s", inf->dataptr); |
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50 callback(pathbuf_start, child, ndepth, 0); |
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51 } else if (object_name_mincheck(child)) { |
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52 sprintf(pathbuf_ptr, "/!bogo%04x", child); |
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53 callback(pathbuf_start, child, ndepth, 1); |
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54 } else { |
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55 fprintf(stderr, |
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56 "visible tree walk error: no valid name for inode #%x\n", |
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57 child); |
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58 continue; |
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59 } |
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60 if (inf->type == 0xF2) |
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61 visible_walk_dir(pathbuf_start, |
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62 index(pathbuf_ptr, '\0'), child, |
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63 ndepth, callback); |
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64 } |
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65 } |
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66 |
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67 traverse_visible_tree(callback) |
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68 void (*callback)(); |
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69 { |
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70 char pathbuf[PATHNAME_BUF_SIZE]; |
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71 |
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72 visible_walk_dir(pathbuf, pathbuf, root_inode, 0, callback); |
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73 } |
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74 |
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75 /* |
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76 * The following function iterates through the descendants of a directory |
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77 * object looking for a specific directory-member filename. |
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78 * |
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79 * Arguments: |
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80 * - inode # of the parent directory |
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81 * - inode # of the first descendant (descendant pointer from the dir object) |
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82 * - filename to search for |
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83 * |
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84 * Returns: inode # of the sought descendant object if found, 0 otherwise. |
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85 */ |
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86 find_dir_member(dirino, first_descend, srchname) |
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87 char *srchname; |
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88 { |
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89 int ino; |
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90 struct inode_info *inf; |
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91 |
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92 for (ino = first_descend; ino; ino = inf->sibling) { |
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93 if (!validate_inode(ino)) { |
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94 fprintf(stderr, |
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95 "error: pathname search hit invalid inode #%x\n", |
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96 ino); |
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97 exit(1); |
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98 } |
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99 inf = inode_info[ino]; |
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100 switch (inf->type) { |
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101 case 0x00: |
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102 /* walking the *visible* tree: skip deleted objects */ |
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103 continue; |
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104 case 0xF4: |
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105 fprintf(stderr, |
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|
106 "warning: directory #%x has child #%x of type segment (F4), skipping\n", |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
107 dirino, ino); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
108 continue; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
109 } |
919
1f27fc13eab7
tiffs: add support for extended filenames found in SE K2x0 FFS
Mychaela Falconia <falcon@freecalypso.org>
parents:
0
diff
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|
110 if (!object_name_mincheck(ino)) { |
0
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
111 fprintf(stderr, |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
112 "visible tree walk error: no valid name for inode #%x\n", |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
113 ino); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
114 continue; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
115 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
116 if (!strcmp(inf->dataptr, srchname)) |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
117 return(ino); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
118 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
119 return(0); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
120 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
121 |
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parents:
diff
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|
122 /* |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
123 * The following function searches for a pathname from the root down. |
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parents:
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|
124 * Returns the inode # if found, otherwise exits with an error message |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
125 * indicating which step failed. |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
126 * |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
127 * Warning: the pathname in the argument buffer will be destroyed: |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
128 * 0s put in place of the slashes. |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
129 */ |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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|
130 find_pathname(pathname) |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
131 char *pathname; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
132 { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
133 char *cur, *next; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
134 int ino; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
135 struct inode_info *inf; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
136 |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
137 cur = pathname; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
138 if (*cur == '/') |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
139 cur++; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
140 else { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
141 fprintf(stderr, |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
142 "bad pathname \"%s\": TIFFS pathnames must be absolute\n", |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
143 pathname); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
144 exit(1); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
145 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
146 for (ino = root_inode; cur; cur = next) { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
147 if (!*cur) |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
148 break; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
149 next = index(cur, '/'); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
150 if (next == cur) { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
151 fprintf(stderr, |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
152 "malformed pathname: multiple adjacent slashes\n"); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
153 exit(1); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
154 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
155 if (next) |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
156 *next++ = '\0'; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
157 inf = inode_info[ino]; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
158 if (inf->type != 0xF2) { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
159 fprintf(stderr, |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
160 "pathname search error: encountered a non-directory\n"); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
161 exit(1); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
162 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
163 ino = find_dir_member(ino, inf->descend, cur); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
164 if (!ino) { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
165 fprintf(stderr, |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
166 "pathname search error: component name not found\n"); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
167 exit(1); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
168 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
169 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
170 return(ino); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
171 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
172 |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
173 /* |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
174 * treewalk_all() walks the entire inode tree from the root down, without |
e7502631a0f9
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
175 * regard to object types, including deleted objects and even reclaimed ones. |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
176 * The output is the filling of the parent and nparents fields in the inode |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
177 * info array. |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
178 */ |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
179 |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
180 static void |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
181 treewalk_all_node(parent) |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
182 { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
183 int child; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
184 struct inode_info *inf; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
185 |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
186 for (child = inode_info[parent]->descend; child; child = inf->sibling) { |
e7502631a0f9
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
187 if (!validate_inode(child)) { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
188 fprintf(stderr, |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
189 "error: walk of complete tree hit invalid inode #%x\n", |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
190 child); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
191 return; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
192 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
193 inf = inode_info[child]; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
194 inf->parent = parent; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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|
195 inf->nparents++; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
196 if (inf->nparents >= inode_limit) { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
197 fprintf(stderr, |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
198 "error: detected loop in inode tree at #%x, child of #%x\n", |
e7502631a0f9
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
199 child, parent); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
200 return; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
201 } |
e7502631a0f9
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
202 if (inf->nparents == 1) |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
203 treewalk_all_node(child); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
204 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
205 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
206 |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
207 treewalk_all() |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
208 { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
209 treewalk_all_node(root_inode); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
210 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
211 |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
212 pathname_of_inode(ino, pnbuf) |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
213 char *pnbuf; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
214 { |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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215 int level; |
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216 char *revpath[MAX_DIR_NEST+1]; |
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217 struct inode_info *inf; |
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218 char *op; |
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219 |
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220 for (level = 0; ino != root_inode; ino = inf->parent) { |
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221 if (!validate_obj_name(ino, 0)) |
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222 return(-1); |
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223 inf = inode_info[ino]; |
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224 if (!inf->parent) |
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225 return(-1); |
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226 if (level > MAX_DIR_NEST) |
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227 return(-1); |
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228 revpath[level++] = (char *) inf->dataptr; |
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229 } |
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230 op = pnbuf; |
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231 if (!level) |
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232 *op++ = '/'; |
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233 while (level) { |
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234 level--; |
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235 *op++ = '/'; |
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236 strcpy(op, revpath[level]); |
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237 op = index(op, '\0'); |
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238 } |
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239 *op = '\0'; |
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240 return(0); |
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241 } |