4.104.114.84.95
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1 | /* |
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2 | * IMFS_find_match_in_dir() |
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3 | * |
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4 | * This routine returns the child name in the given directory. |
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5 | * |
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6 | * COPYRIGHT (c) 1989-1999. |
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7 | * On-Line Applications Research Corporation (OAR). |
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8 | * |
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9 | * The license and distribution terms for this file may be |
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10 | * found in the file LICENSE in this distribution or at |
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11 | * http://www.OARcorp.com/rtems/license.html. |
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12 | * |
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13 | * $Id$ |
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14 | */ |
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15 | |
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16 | #include <errno.h> |
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17 | #include <assert.h> |
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18 | #include "imfs.h" |
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19 | |
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20 | static char dotname[2] = "."; |
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21 | static char dotdotname[2] = ".."; |
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22 | |
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23 | IMFS_jnode_t *IMFS_find_match_in_dir( |
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24 | IMFS_jnode_t *directory, |
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25 | char *name |
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26 | ) |
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27 | { |
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28 | Chain_Node *the_node; |
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29 | Chain_Control *the_chain; |
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30 | IMFS_jnode_t *the_jnode; |
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31 | |
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32 | /* |
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33 | * Check for fatal errors. A NULL directory show a problem in the |
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34 | * the IMFS code. |
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35 | */ |
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36 | |
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37 | assert( directory ); |
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38 | if ( !name ) |
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39 | return 0; |
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40 | |
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41 | assert( name ); |
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42 | if ( !directory ) |
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43 | return 0; |
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44 | |
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45 | /* |
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46 | * Check for "." and ".." |
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47 | */ |
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48 | |
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49 | if ( !strcmp( name, dotname ) ) |
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50 | return directory; |
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51 | |
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52 | if ( !strcmp( name, dotdotname ) ) |
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53 | return directory->Parent; |
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54 | |
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55 | the_chain = &directory->info.directory.Entries; |
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56 | |
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57 | for ( the_node = the_chain->first; |
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58 | !_Chain_Is_tail( the_chain, the_node ); |
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59 | the_node = the_node->next ) { |
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60 | |
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61 | the_jnode = (IMFS_jnode_t *) the_node; |
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62 | |
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63 | if ( !strcmp( name, the_jnode->name ) ) |
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64 | return the_jnode; |
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65 | } |
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66 | |
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67 | return 0; |
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68 | } |
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