fdatasync()

Synchronize file data

Synopsis:

#include <unistd.h>

int fdatasync( int filedes );

Library:

libc

Description:

The fdatasync() function forces all queued I/O operations for the file specified by the filedes file descriptor to finish, synchronizing the file's data.

This function is similar to fsync(), except that fsync() also guarantees the integrity of file information such as access and modification times.

Returns:

0

Success.

-1

An error occurred (errno is set).

Errors:

EBADF

The specified filedes isn't a valid file descriptor open for writing.

EINVAL

The implementation doesn't support synchronized I/O for the given file.

ENOSYS

The fdatasync() function isn't supported for the filesystem specified by filedes.

Classification:

POSIX 1003.1 (Realtime Extensions)

See also:

aio_fsync(), close(), fcntl(), fsync(), open(), read(), sync(), write()