diff options
Diffstat (limited to 'runtime/ops')
| -rw-r--r-- | runtime/ops/fs.rs | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/runtime/ops/fs.rs b/runtime/ops/fs.rs index fe263d944..2f62e143b 100644 --- a/runtime/ops/fs.rs +++ b/runtime/ops/fs.rs @@ -881,6 +881,8 @@ fn op_copy_file_sync( use libc::unlink; use std::ffi::CString; use std::io::Read; + use std::os::unix::fs::OpenOptionsExt; + use std::os::unix::fs::PermissionsExt; let from = CString::new(from).unwrap(); let to = CString::new(to).unwrap(); @@ -909,8 +911,23 @@ fn op_copy_file_sync( let mut buf = [0u8; 128 * 1024]; let mut from_file = std::fs::File::open(&from_path).map_err(err_mapper)?; - let mut to_file = - std::fs::File::create(&to_path).map_err(err_mapper)?; + let perm = from_file.metadata().map_err(err_mapper)?.permissions(); + + let mut to_file = std::fs::OpenOptions::new() + // create the file with the correct mode right away + .mode(perm.mode()) + .write(true) + .create(true) + .truncate(true) + .open(&to_path) + .map_err(err_mapper)?; + let writer_metadata = to_file.metadata()?; + if writer_metadata.is_file() { + // Set the correct file permissions, in case the file already existed. + // Don't set the permissions on already existing non-files like + // pipes/FIFOs or device nodes. + to_file.set_permissions(perm)?; + } loop { let nread = from_file.read(&mut buf).map_err(err_mapper)?; if nread == 0 { |