HPUX fsync[2]

 fsync(2)                                                           fsync(2)





 NAME
      fsync - synchronize a file's in-core state with its state on disk

 SYNOPSIS
      #include <unistd.h>

      int fsync(int fildes);

 DESCRIPTION
      fsync() causes all modified data and attributes of fildes to be moved
      to a permanent storage device.  This normally results in all in-core
      modified copies of buffers for the associated file to be written to a
      disk.  fsync() applies to ordinary files, and applies to block special
      devices on systems which permit I/O to block special devices.

      fsync() should be used by programs that require a file to be in a
      known state; such as when building a simple transaction facility.

 RETURN VALUE
      fsync() returns 0 on success or -1 if an error error occurs, and sets
      errno to indicate the error.

 ERRORS
      fsync fails if any of the following conditions are encountered:

           [EBADF]        fildes is not a valid descriptor.

           [EINVAL]       fildes refers to a file type to which fsync() does
                          not apply.

 WARNINGS
      The current implementation of this function is inefficient for large
      files.

 AUTHOR
      fsync() was developed by the the University of California, Berkeley
      and HP.

 SEE ALSO
      fcntl(2), fcntl(5), open(2), select(2), sync(2), sync(1M).

 STANDARDS CONFORMANCE
      fsync(): AES, XPG3, XPG4











 Hewlett-Packard Company            - 1 -     HP-UX Release 9.0: August 1992