RTEMS 4.10.2 On-Line Library

Input and Output Primitives Manager fsync - Synchronize file complete in-core state with that on disk

RTEMS POSIX API User's Guide

int fsync(
  int fd
);

On success, zero is returned. On error, -1 is returned, and errno is set appropriately.

EBADF: fd is not a valid descriptor open for writing
EINVAL: fd is bound to a special file which does not support support synchronization
EROFS: fd is bound to a special file which does not support support synchronization
EIO: An error occurred during synchronization

fsync copies all in-core parts of a file to disk.

NONE

RTEMS POSIX API User's Guide