[RTEMS Project] #4655: sync() whould synchronize all file descriptors

[RTEMS trac]

#4655: sync() whould synchronize all file descriptors
------------------------------+-----------------------------
  Reporter:  Sebastian Huber  |      Owner:  Sebastian Huber
      Type:  defect           |     Status:  assigned
  Priority:  normal           |  Milestone:  5.2
 Component:  fs               |    Version:  4.5
  Severity:  normal           |   Keywords:
Blocked By:                   |   Blocking:
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 According to POSIX

 https://pubs.opengroup.org/onlinepubs/9699919799/functions/sync.html

 we have

 {{{
 The sync() function shall cause all information in memory that updates
 file systems to be scheduled for writing out to all file systems.
 }}}

 Currently, the RTEMS sync() implementation synchronizes only the file
 descriptors associated with a FILE object.  This should be changed to call
 fsync() and fdatasync() for all file descriptors.

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Ticket URL: <http://devel.rtems.org/ticket/4655>
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