Function nc::sync_file_range [−][src]
pub fn sync_file_range(
fd: i32,
offset: off_t,
nbytes: off_t,
flags: i32
) -> Result<(), Errno>
Expand description
Sync a file segment to disk
let path = "/tmp/nc-sync-file-range"; let ret = nc::open(path, nc::O_WRONLY | nc::O_CREAT, 0o644); assert!(ret.is_ok()); let fd = ret.unwrap(); let msg = "Hello, Rust"; let ret = nc::write(fd, msg.as_ptr() as usize, msg.len()); assert!(ret.is_ok()); let n_write = ret.unwrap(); assert_eq!(n_write, msg.len() as nc::ssize_t); let ret = nc::sync_file_range( fd, 0, n_write, nc::SYNC_FILE_RANGE_WAIT_BEFORE | nc::SYNC_FILE_RANGE_WRITE | nc::SYNC_FILE_RANGE_WAIT_AFTER, ); assert!(ret.is_ok()); assert!(nc::close(fd).is_ok()); assert!(nc::unlink(path).is_ok());