| 130 | } |
| 131 | |
| 132 | fn write_zeroes(&mut self, offset: u64, length: u64, user_data: u64) -> AsyncIoResult<()> { |
| 133 | let mode = FALLOC_FL_ZERO_RANGE | FALLOC_FL_KEEP_SIZE; |
| 134 | |
| 135 | // SAFETY: FFI call with valid arguments |
| 136 | let result = unsafe { |
| 137 | libc::fallocate( |
| 138 | self.fd as libc::c_int, |
| 139 | mode, |
| 140 | offset as libc::off_t, |
| 141 | length as libc::off_t, |
| 142 | ) |
| 143 | }; |
| 144 | if result < 0 { |
| 145 | return Err(AsyncIoError::WriteZeroes(std::io::Error::last_os_error())); |
| 146 | } |
| 147 | |
| 148 | self.completion_list.push_back((user_data, result)); |
| 149 | self.eventfd.write(1).unwrap(); |
| 150 | |
| 151 | Ok(()) |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | #[cfg(test)] |