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Merge branch 'master' into capi-multiple-backends

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Syrus Akbary 2019-12-12 17:06:10 -08:00 committed by GitHub
commit 4aafa45a7a
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16
lib/wasi/src/state/mod.rs
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@ -122,16 +122,30 @@ pub struct Fd {
pub rights_inheriting: __wasi_rights_t,
pub flags: __wasi_fdflags_t,
pub offset: u64,
/// Used when reopening the file on the host system
/// Flags that determine how the [`Fd`] can be used.
///
/// Used when reopening a [`HostFile`] during [`WasiState`] deserialization.
pub open_flags: u16,
pub inode: Inode,
}
impl Fd {
/// This [`Fd`] can be used with read system calls.
pub const READ: u16 = 1;
/// This [`Fd`] can be used with write system calls.
pub const WRITE: u16 = 2;
/// This [`Fd`] can append in write system calls. Note that the append
/// permission implies the write permission.
pub const APPEND: u16 = 4;
/// This [`Fd`] will delete everything before writing. Note that truncate
/// permissions require the write permission.
///
/// This permission is currently unused when deserializing [`WasiState`].
pub const TRUNCATE: u16 = 8;
/// This [`Fd`] may create a file before writing to it. Note that create
/// permissions require write permissions.
///
/// This permission is currently unused when deserializing [`WasiState`].
pub const CREATE: u16 = 16;
}