1 | /* |
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2 | * sync() - XXX ??? where is this defined |
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3 | * |
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4 | * This function operates by as follows: |
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5 | * for all threads |
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6 | * for all FILE * |
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7 | * fsync() |
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8 | * fdatasync() |
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9 | * |
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10 | * COPYRIGHT (c) 1989-2003. |
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11 | * On-Line Applications Research Corporation (OAR). |
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12 | * |
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13 | * The license and distribution terms for this file may be |
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14 | * found in the file LICENSE in this distribution or at |
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15 | * http://www.rtems.com/license/LICENSE. |
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16 | * |
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17 | * $Id$ |
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18 | */ |
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19 | |
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20 | #if HAVE_CONFIG_H |
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21 | #include "config.h" |
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22 | #endif |
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23 | |
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24 | /* Since we compile with strict ANSI we need to undef it to get |
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25 | * prototypes for extensions |
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26 | */ |
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27 | #undef __STRICT_ANSI__ |
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28 | int fdatasync(int); /* still not always prototyped */ |
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29 | |
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30 | |
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31 | #include <unistd.h> |
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32 | #include <stdio.h> |
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33 | |
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34 | #include <rtems.h> |
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35 | /* |
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36 | #define __RTEMS_VIOLATE_KERNEL_VISIBILITY__ |
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37 | |
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38 | #include <rtems/libio_.h> |
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39 | #include <rtems/seterr.h> |
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40 | */ |
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41 | |
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42 | /* XXX check standards -- Linux version appears to be void */ |
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43 | void _fwalk(struct _reent *, void *); |
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44 | |
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45 | |
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46 | static void sync_wrapper(FILE *f) |
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47 | { |
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48 | int fn = fileno(f); |
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49 | |
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50 | fsync(fn); |
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51 | fdatasync(fn); |
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52 | } |
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53 | |
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54 | /* iterate over all FILE *'s for this thread */ |
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55 | static void sync_per_thread(Thread_Control *t) |
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56 | { |
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57 | struct _reent *current_reent; |
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58 | struct _reent *this_reent; |
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59 | |
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60 | /* |
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61 | * The sync_wrapper() function will operate on the current thread's |
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62 | * reent structure so we will temporarily use that. |
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63 | */ |
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64 | this_reent = t->libc_reent; |
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65 | if ( this_reent ) { |
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66 | current_reent = _Thread_Executing->libc_reent; |
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67 | _Thread_Executing->libc_reent = this_reent; |
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68 | _fwalk (t->libc_reent, sync_wrapper); |
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69 | _Thread_Executing->libc_reent = current_reent; |
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70 | } |
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71 | } |
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72 | |
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73 | int sync(void) |
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74 | { |
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75 | extern struct _reent libc_global_reent; |
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76 | |
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77 | /* |
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78 | * Walk the one used initially by RTEMS. |
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79 | */ |
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80 | _fwalk(&libc_global_reent, sync_wrapper); |
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81 | |
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82 | /* |
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83 | * XXX Do we walk the one used globally by newlib? |
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84 | * XXX Do we need the RTEMS global one? |
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85 | */ |
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86 | |
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87 | /* |
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88 | * Now walk all the per-thread reentrancy structures. |
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89 | */ |
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90 | rtems_iterate_over_all_threads(sync_per_thread); |
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91 | |
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92 | return 0; |
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93 | } |
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