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fix basic errors in linux impl

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This commit is contained in:
Mark McCaskey 2019-03-29 15:17:42 -07:00
parent 35fbf573c9
commit 5dcb95dd7a
1 changed files with 12 additions and 3 deletions
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15
lib/wasi/src/syscalls/unix/linux.rs
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@ -1,5 +1,6 @@
use crate::syscalls::types::*;
use std::cell::Cell;
use std::mem;
use libc::preadv;
@ -12,10 +13,18 @@ pub fn platform_fd_pread(
) -> __wasi_errno_t {
let (result, iovec) = unsafe {
let mut iovec = vec![mem::uninitialized(); iovs_len as usize];
(preadv(fd, &mut iovec, iovs_len, offset), iovec)
(
preadv(
fd as i32,
iovec.as_mut_ptr(),
iovs_len as i32,
offset as i64,
),
iovec,
)
};
nread.set(result);
for (arr_cell, i) in iov_arr.iter().enumerate() {
nread.set(result as u32);
for (arr_cell, i) in iovs.iter().enumerate() {
let wasi_iovec = __wasi_iovec_t {
buf: iovec[i] as _,
buf_len: iovec[i].iov_len as u32,