4.115
Last change
on this file since c499856 was
c499856,
checked in by Chris Johns <chrisj@…>, on 03/20/14 at 21:10:47
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Change all references of rtems.com to rtems.org.
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Property mode set to
100644
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File size:
1.5 KB
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1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Remove an Existing Link |
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5 | * @ingroup libcsupport |
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6 | */ |
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7 | |
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8 | /* |
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9 | * COPYRIGHT (c) 1989-1999. |
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10 | * On-Line Applications Research Corporation (OAR). |
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11 | * |
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12 | * The license and distribution terms for this file may be |
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13 | * found in the file LICENSE in this distribution or at |
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14 | * http://www.rtems.org/license/LICENSE. |
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15 | */ |
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16 | |
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17 | #if HAVE_CONFIG_H |
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18 | #include "config.h" |
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19 | #endif |
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20 | |
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21 | #include <unistd.h> |
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22 | |
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23 | #include <rtems/libio_.h> |
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24 | |
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25 | /** |
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26 | * POSIX 1003.1b - 5.5.1 - Remove an existing link |
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27 | */ |
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28 | int unlink( const char *path ) |
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29 | { |
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30 | int rv = 0; |
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31 | rtems_filesystem_eval_path_context_t ctx; |
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32 | int eval_flags = RTEMS_FS_REJECT_TERMINAL_DOT; |
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33 | rtems_filesystem_location_info_t parentloc; |
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34 | int parent_eval_flags = RTEMS_FS_PERMS_WRITE |
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35 | | RTEMS_FS_PERMS_EXEC |
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36 | | RTEMS_FS_FOLLOW_LINK; |
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37 | const rtems_filesystem_location_info_t *currentloc = |
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38 | rtems_filesystem_eval_path_start_with_parent( |
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39 | &ctx, |
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40 | path, |
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41 | eval_flags, |
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42 | &parentloc, |
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43 | parent_eval_flags |
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44 | ); |
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45 | |
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46 | if ( !rtems_filesystem_location_is_instance_root( currentloc ) ) { |
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47 | const rtems_filesystem_operations_table *ops = currentloc->mt_entry->ops; |
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48 | |
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49 | rv = (*ops->rmnod_h)( &parentloc, currentloc ); |
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50 | } else { |
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51 | rtems_filesystem_eval_path_error( &ctx, EBUSY ); |
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52 | rv = -1; |
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53 | } |
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54 | |
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55 | rtems_filesystem_eval_path_cleanup_with_parent( &ctx, &parentloc ); |
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56 | |
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57 | return rv; |
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58 | } |
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59 | |
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60 | #if defined(RTEMS_NEWLIB) |
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61 | |
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62 | #include <reent.h> |
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63 | |
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64 | /** |
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65 | * This is the Newlib dependent reentrant version of unlink(). |
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66 | */ |
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67 | int _unlink_r( |
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68 | struct _reent *ptr __attribute__((unused)), |
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69 | const char *path |
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70 | ) |
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71 | { |
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72 | return unlink( path ); |
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73 | } |
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74 | #endif |
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