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sync2(2)
NAME
  sync2 - Flush file system metadata and data from memory buffers to disk

SYNOPSIS
  #include <sys/mount.h>

  int sync2(
	  unsigned int POLICY,
	  char *path );

PARAMETERS
  POLICY
      Flush the file system memory buffers to disk. The argument is one of
      the following:

      SYNC_SYNCPOLICY
	  Flush all memory buffers. Specifying this flag causes the function
	  to behave the same as the sync() function.  See sync(2).

      SYNC_SMOOTHSYNCPOLICY
	  Flush all memory buffers except those under smooth sync control.

  path
      The name of a UFS file system or AdvFS fileset.  Specify the optional
      path parameter when you want to have the POLICY act only on that file
      system instead of all file systems.  Specify a NULL argument when you
      want to have the POLICY act on all file systems.

DESCRIPTION
  The sync2() function causes file system data to be flushed (written) to
  disk. Which memory buffers are flushed to disk depends on the POLICY
  argument.

  If the policy is SYNC_SYNCPOLICY, all memory buffers are flushed to disk.
  If the policy is SYNC_SMOOTHSYNCPOLICY, all memory buffers except those
  under smooth sync control are flushed to disk.

  To which file systems the POLICY argument applies depends on the path
  argument.  To apply the policy to one file system, name it in the path
  argument.  To apply the policy to all file systems, specify the path
  argument as NULL.

  The writing, although scheduled, is not necessarily complete upon return
  from the sync2() function.

  See the description of the smoothsync_age attribute in sys_attrs_vfs(5) for
  the definition of the smooth sync age period. See the description of the
  M_SMSYNC2 flag in mount(2) for information on enabling an alternate smooth
  sync policy.

SEE ALSO
  Commands: sync(8)

  Functions: mount(2), sync(2)

  Others: standards(5), sys_attrs_vfs(5)

Index for Section 2

Alphabetical listing for S

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