4.104.114.84.95
Last change
on this file since d6b1d73 was
d6b1d73,
checked in by Joel Sherrill <joel.sherrill@…>, on 01/22/01 at 14:05:14
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2001-01-22 Ralf Corsepius <corsepiu@…>
- configure.in: Add src/imfs/config.h
- src/imfs/Makefile.am: Add INCLUDES += -I. to pickup config.h
- src/imfs/.cvsignore: Add config.h and stamp-h
- src/imfs/*.c: Add config.h support.
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-
Property mode set to
100644
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File size:
1.7 KB
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Line | |
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1 | /* |
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2 | * IMFS_unlink |
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3 | * |
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4 | * Routine to remove a link node from the tree. |
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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 | #if HAVE_CONFIG_H |
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17 | #include "config.h" |
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18 | #endif |
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19 | |
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20 | #include <errno.h> |
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21 | #include <stdlib.h> |
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22 | |
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23 | #include "imfs.h" |
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24 | #include <rtems/libio_.h> |
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25 | |
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26 | int IMFS_unlink( |
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27 | rtems_filesystem_location_info_t *loc /* IN */ |
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28 | ) |
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29 | { |
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30 | IMFS_jnode_t *node; |
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31 | rtems_filesystem_location_info_t the_link; |
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32 | int result = 0; |
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33 | |
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34 | node = loc->node_access; |
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35 | |
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36 | /* |
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37 | * Decrement the link counter of node pointed to and free the |
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38 | * space. |
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39 | */ |
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40 | |
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41 | /* |
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42 | * If this is the last last pointer to the node |
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43 | * free the node. |
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44 | */ |
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45 | |
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46 | if ( node->type == IMFS_HARD_LINK ) { |
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47 | |
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48 | if ( !node->info.hard_link.link_node ) |
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49 | set_errno_and_return_minus_one( EINVAL ); |
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50 | |
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51 | the_link = *loc; |
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52 | the_link.node_access = node->info.hard_link.link_node; |
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53 | IMFS_Set_handlers( &the_link ); |
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54 | |
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55 | /* |
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56 | * If removing the last hard link to a node, then we need |
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57 | * to remove the node that is a link and the node itself. |
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58 | */ |
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59 | |
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60 | node->info.hard_link.link_node->st_nlink --; |
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61 | IMFS_update_ctime( node->info.hard_link.link_node ); |
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62 | if ( node->info.hard_link.link_node->st_nlink < 1) { |
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63 | result = (*the_link.handlers->rmnod_h)( &the_link ); |
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64 | if ( result != 0 ) |
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65 | return -1; |
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66 | } |
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67 | } |
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68 | |
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69 | /* |
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70 | * Now actually free the node we were asked to free. |
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71 | */ |
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72 | |
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73 | result = (*loc->handlers->rmnod_h)( loc ); |
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74 | |
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75 | return result; |
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76 | } |
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77 | |
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