sync(2)                      DG/UX 5.4 Rel. 2.01                     sync(2)


NAME
       sync - synchronize disk and memory resident file system information

SYNOPSIS
       #include <unistd.h>

       void  sync ()

DESCRIPTION
       The sync system call causes file system information in memory to be
       written to disk.

       This call works only for the superuser. If a non-superuser makes the
       call, it fails silently.  (The kernel automatically writes file
       system information to disk at MAXBUFAGE intervals.)

       Activity may continue on the file system device while the sync is
       being performed, but there is no guarantee that changes to files or
       file system data occurring after sync starts will get written to
       disk.  Upon return from sync, there is no guarantee that all writes
       to the disk have completed.

ACCESS CONTROL
       None.

RETURN VALUE
       None.

DIAGNOSTICS
       None.

SEE ALSO
       sync(1M), fsync(2).
























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