sunos man page for fdatasync

fdatasync(3RT)						    Realtime Library Functions						    fdatasync(3RT)

NAME
       fdatasync - synchronize a file's data

SYNOPSIS
       cc [ flag... ] file... -lrt [ library... ]
       #include <unistd.h>

       int fdatasync(int fildes);

DESCRIPTION
       The  fdatasync()  function  forces  all currently queued I/O operations associated with the file indicated by file descriptor fildes to the
       synchronized I/O completion state.

       The functionality is as described for fsync(3C) (with the symbol _XOPEN_REALTIME defined), with the exception that all I/O  operations  are
       completed as defined for synchronised I/O data integrity completion.

RETURN VALUES
       If  successful,	the fdatasync() function returns 0. Otherwise, the function returns -1 and sets errno to indicate the error. If the fdata-
       sync() function fails, outstanding I/O operations are not guaranteed to have been completed.

ERRORS
       The  fdatasync() function will fail if:

       EBADF	       The fildes argument is not a valid file descriptor open for writing.

       EINVAL	       The system does not support synchronized I/O for this file.

       ENOSYS	       The function fdatasync() is not supported by the system.

       In the event that any of the queued I/O operations fail, fdatasync() returns the error conditions defined for read(2) and write(2).

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Async-Signal-Safe 	   |
       +-----------------------------+-----------------------------+

SEE ALSO
       fcntl(2), open(2), read(2), write(2), fsync(3C), aio_fsync(3RT), fcntl.h(3HEAD), attributes(5), standards(5)

SunOS 5.10							    28 Jun 2002 						    fdatasync(3RT)