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impl ValueType for fdstat_t

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This commit is contained in:
Mark McCaskey 2019-03-29 15:49:42 -07:00
parent 147d71a32c
commit 42e8523c0b
1 changed files with 53 additions and 6 deletions
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59
lib/wasi/src/syscalls/types.rs
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@ -1,8 +1,8 @@
#![allow(non_camel_case_types)] #![allow(non_camel_case_types)]
use crate::ptr::{Array, WasmPtr}; use crate::ptr::{Array, WasmPtr};
use wasmer_runtime_core::types::{ValueError, ValueType};
use std::mem; use std::mem;
use wasmer_runtime_core::types::{ValueError, ValueType};
pub type __wasi_advice_t = u8; pub type __wasi_advice_t = u8;
pub const __WASI_ADVICE_DONTNEED: u8 = 0; pub const __WASI_ADVICE_DONTNEED: u8 = 0;
@ -178,7 +178,7 @@ impl ValueType for __wasi_prestat_u_dir_t {
} }
fn from_le(buffer: &[u8]) -> Result<Self, ValueError> { fn from_le(buffer: &[u8]) -> Result<Self, ValueError> {
if buffer.len() >= mem::size_of::<__wasi_iovec_t>() { if buffer.len() >= mem::size_of::<__wasi_prestat_u_dir_t>() {
let pr_name_len = ValueType::from_le(&buffer[..mem::size_of::<u32>()])?; let pr_name_len = ValueType::from_le(&buffer[..mem::size_of::<u32>()])?;
Ok(Self { pr_name_len }) Ok(Self { pr_name_len })
} else { } else {
@ -195,12 +195,14 @@ pub union __wasi_prestat_u {
impl ValueType for __wasi_prestat_u { impl ValueType for __wasi_prestat_u {
fn into_le(self, buffer: &mut [u8]) { fn into_le(self, buffer: &mut [u8]) {
unsafe {self.dir unsafe {
.into_le(&mut buffer[..mem::size_of::<__wasi_prestat_u_dir_t>()])}; self.dir
.into_le(&mut buffer[..mem::size_of::<__wasi_prestat_u_dir_t>()])
};
} }
fn from_le(buffer: &[u8]) -> Result<Self, ValueError> { fn from_le(buffer: &[u8]) -> Result<Self, ValueError> {
if buffer.len() >= mem::size_of::<__wasi_iovec_t>() { if buffer.len() >= mem::size_of::<__wasi_prestat_u>() {
let dir = ValueType::from_le(&buffer[..mem::size_of::<__wasi_prestat_u_dir_t>()])?; let dir = ValueType::from_le(&buffer[..mem::size_of::<__wasi_prestat_u_dir_t>()])?;
Ok(Self { dir }) Ok(Self { dir })
} else { } else {
@ -225,7 +227,7 @@ impl ValueType for __wasi_prestat_t {
} }
fn from_le(buffer: &[u8]) -> Result<Self, ValueError> { fn from_le(buffer: &[u8]) -> Result<Self, ValueError> {
if buffer.len() >= mem::size_of::<__wasi_iovec_t>() { if buffer.len() >= mem::size_of::<__wasi_prestat_t>() {
let pr_type = ValueType::from_le(&buffer[..mem::size_of::<__wasi_preopentype_t>()])?; let pr_type = ValueType::from_le(&buffer[..mem::size_of::<__wasi_preopentype_t>()])?;
let u = ValueType::from_le(&buffer[mem::size_of::<__wasi_preopentype_t>()..])?; let u = ValueType::from_le(&buffer[mem::size_of::<__wasi_preopentype_t>()..])?;
Ok(Self { pr_type, u }) Ok(Self { pr_type, u })
@ -244,6 +246,51 @@ pub struct __wasi_fdstat_t {
pub fs_rights_inheriting: __wasi_rights_t, pub fs_rights_inheriting: __wasi_rights_t,
} }
impl ValueType for __wasi_fdstat_t {
fn into_le(self, buffer: &mut [u8]) {
self.fs_filetype
.into_le(&mut buffer[..mem::size_of::<__wasi_filetype_t>()]);
self.fs_flags.into_le(
&mut buffer[mem::size_of::<__wasi_filetype_t>()..mem::size_of::<__wasi_fdflags_t>()],
);
self.fs_rights_base.into_le(
&mut buffer[(mem::size_of::<__wasi_filetype_t>() + mem::size_of::<__wasi_fdflags_t>())
..mem::size_of::<__wasi_rights_t>()],
);
self.fs_rights_inheriting.into_le(
&mut buffer[(mem::size_of::<__wasi_filetype_t>()
+ mem::size_of::<__wasi_fdflags_t>()
+ mem::size_of::<__wasi_rights_t>())..],
);
}
fn from_le(buffer: &[u8]) -> Result<Self, ValueError> {
if buffer.len() >= mem::size_of::<__wasi_fdstat_t>() {
let fs_filetype = ValueType::from_le(&buffer[..mem::size_of::<__wasi_filetype_t>()])?;
let fs_flags = ValueType::from_le(
&buffer[mem::size_of::<__wasi_filetype_t>()..mem::size_of::<__wasi_fdflags_t>()],
)?;
let fs_rights_base = ValueType::from_le(
&buffer[(mem::size_of::<__wasi_filetype_t>() + mem::size_of::<__wasi_fdflags_t>())
..mem::size_of::<__wasi_rights_t>()],
)?;
let fs_rights_inheriting = ValueType::from_le(
&buffer[(mem::size_of::<__wasi_filetype_t>()
+ mem::size_of::<__wasi_fdflags_t>()
+ mem::size_of::<__wasi_rights_t>())..],
)?;
Ok(Self {
fs_filetype,
fs_flags,
fs_rights_base,
fs_rights_inheriting,
})
} else {
Err(ValueError::BufferTooSmall)
}
}
}
pub type __wasi_filedelta_t = i64; pub type __wasi_filedelta_t = i64;
pub type __wasi_filesize_t = u64; pub type __wasi_filesize_t = u64;