Synchronize file data
#include <unistd.h> int fdatasync( int filedes );
Use the -l c option to qcc to link against this library. This library is usually included automatically.
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. The function blocks until this is finished. For more information about synchronizing, see “Filesystems and block I/O (devb-*) drivers” in the Fine-Tuning Your System chapter of the QNX Neutrino User's Guide.
This function is similar to fsync(), except that fsync() also guarantees the integrity of file information, such as access and modification times.
POSIX 1003.1 SIO
aio_fsync(), close(), fcntl(), fsync(), open(), read(), sync(), write()
“Filesystems and block I/O (devb-*) drivers” in the Fine-Tuning Your System chapter of the QNX Neutrino User's Guide