4.104.114.84.95
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1 | /* |
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2 | * unlink() - POSIX 1003.1b - 5.5.1 - Remove an existing link |
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3 | * |
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4 | * COPYRIGHT (c) 1989-1999. |
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5 | * On-Line Applications Research Corporation (OAR). |
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6 | * |
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7 | * The license and distribution terms for this file may be |
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8 | * found in the file LICENSE in this distribution or at |
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9 | * http://www.OARcorp.com/rtems/license.html. |
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10 | * |
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11 | * $Id$ |
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12 | */ |
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13 | |
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14 | #include <errno.h> |
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15 | |
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16 | #include "libio_.h" |
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17 | |
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18 | int unlink( |
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19 | const char *path |
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20 | ) |
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21 | { |
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22 | rtems_filesystem_location_info_t loc; |
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23 | int result; |
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24 | |
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25 | /* |
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26 | * Get the node to be unlinked. |
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27 | */ |
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28 | |
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29 | result = rtems_filesystem_evaluate_path( path, 0, &loc, FALSE ); |
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30 | if ( result != 0 ) |
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31 | return -1; |
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32 | |
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33 | if ( !loc.ops->node_type ) { |
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34 | rtems_filesystem_freenode( &loc ); |
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35 | set_errno_and_return_minus_one( ENOTSUP ); |
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36 | } |
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37 | |
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38 | if ( (*loc.ops->node_type)( &loc ) == RTEMS_FILESYSTEM_DIRECTORY ) { |
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39 | rtems_filesystem_freenode( &loc ); |
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40 | set_errno_and_return_minus_one( EISDIR ); |
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41 | } |
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42 | |
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43 | if ( !loc.ops->unlink ) { |
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44 | rtems_filesystem_freenode( &loc ); |
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45 | set_errno_and_return_minus_one( ENOTSUP ); |
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46 | } |
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47 | |
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48 | result = (*loc.ops->unlink)( &loc ); |
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49 | |
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50 | rtems_filesystem_freenode( &loc ); |
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51 | |
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52 | return result; |
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53 | } |
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54 | |
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55 | /* |
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56 | * _unlink_r |
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57 | * |
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58 | * This is the Newlib dependent reentrant version of unlink(). |
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59 | */ |
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60 | |
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61 | #if defined(RTEMS_NEWLIB) |
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62 | |
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63 | #include <reent.h> |
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64 | |
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65 | int _unlink_r( |
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66 | struct _reent *ptr, |
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67 | const char *path |
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68 | ) |
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69 | { |
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70 | return unlink( path ); |
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71 | } |
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72 | #endif |
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73 | |
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