4.115
Last change
on this file since 8d8f363 was
a4097fdb,
checked in by Sebastian Huber <sebastian.huber@…>, on 02/21/12 at 11:56:51
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PR 2026/filesystem - Fix semaphore attributes
Semaphores of type RTEMS_SIMPLE_BINARY_SEMAPHORE are not suitable for a
mutex. Use RTEMS_BINARY_SEMAPHORE with RTEMS_INHERIT_PRIORITY instead.
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-
Property mode set to
100644
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File size:
1.4 KB
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1 | /* |
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2 | * COPYRIGHT (c) 2010 Chris Johns <chrisj@rtems.org> |
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3 | * |
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4 | * The license and distribution terms for this file may be |
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5 | * found in the file LICENSE in this distribution or at |
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6 | * http://www.rtems.com/license/LICENSE. |
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7 | * |
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8 | * $Id$ |
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9 | */ |
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10 | /** |
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11 | * @file |
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12 | * |
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13 | * @ingroup rtems-rfs |
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14 | * |
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15 | * RTEMS File System Mutex. |
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16 | */ |
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17 | |
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18 | #if HAVE_CONFIG_H |
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19 | #include "config.h" |
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20 | #endif |
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21 | |
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22 | #include <rtems/rfs/rtems-rfs-mutex.h> |
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23 | |
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24 | #if __rtems__ |
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25 | /** |
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26 | * RTEMS_RFS Mutex Attributes |
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27 | */ |
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28 | #define RTEMS_RFS_MUTEX_ATTRIBS \ |
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29 | (RTEMS_PRIORITY | RTEMS_BINARY_SEMAPHORE | \ |
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30 | RTEMS_INHERIT_PRIORITY | RTEMS_NO_PRIORITY_CEILING | RTEMS_LOCAL) |
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31 | #endif |
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32 | |
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33 | int |
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34 | rtems_rfs_mutex_create (rtems_rfs_mutex* mutex) |
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35 | { |
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36 | #if __rtems__ |
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37 | rtems_status_code sc; |
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38 | sc = rtems_semaphore_create (rtems_build_name ('R', 'F', 'S', 'm'), |
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39 | 1, RTEMS_RFS_MUTEX_ATTRIBS, 0, |
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40 | mutex); |
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41 | if (sc != RTEMS_SUCCESSFUL) |
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42 | { |
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43 | if (rtems_rfs_trace (RTEMS_RFS_TRACE_MUTEX)) |
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44 | printf ("rtems-rfs: mutex: open failed: %s\n", |
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45 | rtems_status_text (sc)); |
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46 | return EIO; |
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47 | } |
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48 | #endif |
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49 | return 0; |
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50 | } |
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51 | |
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52 | int |
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53 | rtems_rfs_mutex_destroy (rtems_rfs_mutex* mutex) |
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54 | { |
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55 | #if __rtems__ |
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56 | rtems_status_code sc; |
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57 | sc = rtems_semaphore_delete (*mutex); |
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58 | if (sc != RTEMS_SUCCESSFUL) |
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59 | { |
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60 | if (rtems_rfs_trace (RTEMS_RFS_TRACE_MUTEX)) |
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61 | printf ("rtems-rfs: mutex: close failed: %s\n", |
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62 | rtems_status_text (sc)); |
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63 | return EIO; |
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64 | } |
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65 | #endif |
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66 | return 0; |
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67 | } |
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