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use unsafe to mark reopen_with_fdflags as having special safety features

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Pat Hickey
2021-01-21 18:08:15 -08:00
parent 69b7352332
commit 9e0d295f8c
5 changed files with 15 additions and 7 deletions
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4
crates/wasi-c2/src/file.rs
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@@ -10,7 +10,9 @@ pub trait WasiFile {
fn sync(&self) -> Result<(), Error>; // file op
fn get_filetype(&self) -> Result<FileType, Error>; // file op
fn get_fdflags(&self) -> Result<FdFlags, Error>; // file op
fn reopen_with_fdflags(&self, flags: FdFlags) -> Result<Box<dyn WasiFile>, Error>; // file op
/// This method takes a `&self` so that it can be called on a `&dyn WasiFile`. However,
/// the caller makes the additional guarantee to drop `self` after the call is successful.
unsafe fn reopen_with_fdflags(&self, flags: FdFlags) -> Result<Box<dyn WasiFile>, Error>; // file op
fn get_filestat(&self) -> Result<Filestat, Error>; // split out get_length as a read & write op, rest is a file op
fn set_filestat_size(&self, _size: u64) -> Result<(), Error>; // write op
fn advise(