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improve networking in emscripten

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This commit is contained in:
Mark McCaskey
2019-07-01 16:36:30 -07:00
parent fada36a72c
commit 623bec001f
7 changed files with 170 additions and 73 deletions
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43
lib/emscripten/src/syscalls/mod.rs
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@ -279,28 +279,38 @@ pub fn ___syscall75(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
// readlink
pub fn ___syscall85(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> i32 {
debug!("emscripten::___syscall85 (readlink)");
let _path = varargs.get_str(ctx);
let pathname_addr = varargs.get_str(ctx);
let buf = varargs.get_str(ctx);
// let buf_addr: i32 = varargs.get(ctx);
let buf_size: i32 = varargs.get(ctx);
let fd = 3;
let ret = unsafe { read(fd, buf as _, buf_size as _) as i32 };
let real_path_owned = get_cstr_path(ctx, pathname_addr);
let real_path = if let Some(ref rp) = real_path_owned {
rp.as_c_str().as_ptr()
} else {
pathname_addr
};
// let fd = 3;
// let ret = unsafe { read(fd, buf as _, buf_size as _) as i32 };
// debug!(
// "=> buf: {}, buf_size: {}, return: {} ",
// unsafe { std::ffi::CStr::from_ptr(buf as _).to_str().unwrap() },
// buf_size,
// ret
// );
let ret = unsafe { libc::readlink(real_path, buf as _, buf_size as _) as i32 };
if ret == -1 {
debug!("readlink failed");
return ret;
}
debug!(
"=> buf: {}, buf_size: {}, return: {} ",
"=> path: {}, buf: {}, buf_size: {}, return: {} ",
unsafe { std::ffi::CStr::from_ptr(real_path).to_str().unwrap() },
unsafe { std::ffi::CStr::from_ptr(buf as _).to_str().unwrap() },
// std::ffi::CStr::from_ptr(buf).to_str().unwrap(),
// buf,
buf_size,
ret
);
// let ret = unsafe {
// readlink(path, buf as _, buf_size as _) as i32
// };
// debug!("=> path: {}, buf: {}, buf_size: {}, return: {} ",
// unsafe { std::ffi::CStr::from_ptr(path).to_str().unwrap() },
// unsafe { std::ffi::CStr::from_ptr(buf as _).to_str().unwrap() },
// // std::ffi::CStr::from_ptr(buf).to_str().unwrap(),
// // buf,
// buf_size,
// ret);
ret
}
@ -531,11 +541,6 @@ pub fn ___syscall146(ctx: &mut Ctx, _which: i32, mut varargs: VarArgs) -> i32 {
}
}
pub fn ___syscall168(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
debug!("emscripten::___syscall168 - stub");
-1
}
pub fn ___syscall191(ctx: &mut Ctx, _which: i32, mut varargs: VarArgs) -> i32 {
let _resource: i32 = varargs.get(ctx);
debug!(