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This commit is contained in:
Mackenzie Clark
2019-03-21 12:12:58 -07:00
parent 825926f40a
commit 92e1fce83a
3 changed files with 184 additions and 207 deletions
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56
lib/emscripten/src/syscalls/unix/host_fs.rs
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@ -93,16 +93,6 @@ pub fn ___syscall42(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int
result
}
/// dup2
pub fn ___syscall63(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
debug!("emscripten::___syscall63 (dup2) {}", _which);
let src: i32 = varargs.get(ctx);
let dst: i32 = varargs.get(ctx);
unsafe { libc::dup2(src, dst) }
}
/// ioctl
pub fn ___syscall54(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
debug!("emscripten::___syscall54 (ioctl) {}", _which);
@ -145,6 +135,16 @@ pub fn ___syscall54(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int
}
}
/// dup2
pub fn ___syscall63(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
debug!("emscripten::___syscall63 (dup2) {}", _which);
let src: i32 = varargs.get(ctx);
let dst: i32 = varargs.get(ctx);
unsafe { libc::dup2(src, dst) }
}
// socketcall
#[allow(clippy::cast_ptr_alignment)]
pub fn ___syscall102(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
@ -455,6 +455,42 @@ pub fn ___syscall142(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_in
result
}
// writev
#[allow(clippy::cast_ptr_alignment)]
pub fn ___syscall146(ctx: &mut Ctx, _which: i32, mut varargs: VarArgs) -> i32 {
// -> ssize_t
debug!("emscripten::___syscall146 (writev) {}", _which);
let fd: i32 = varargs.get(ctx);
let iov: i32 = varargs.get(ctx);
let iovcnt: i32 = varargs.get(ctx);
#[repr(C)]
struct GuestIovec {
iov_base: i32,
iov_len: i32,
}
debug!("=> fd: {}, iov: {}, iovcnt = {}", fd, iov, iovcnt);
let mut ret = 0;
unsafe {
for i in 0..iovcnt {
let guest_iov_addr =
emscripten_memory_pointer!(ctx.memory(0), (iov + i * 8)) as *mut GuestIovec;
let iov_base = emscripten_memory_pointer!(ctx.memory(0), (*guest_iov_addr).iov_base)
as *const c_void;
let iov_len = (*guest_iov_addr).iov_len as _;
// debug!("=> iov_addr: {:?}, {:?}", iov_base, iov_len);
let curr = libc::write(fd, iov_base, iov_len);
if curr < 0 {
return -1;
}
ret += curr;
}
// debug!(" => ret: {}", ret);
ret as _
}
}
/// pread
pub fn ___syscall180(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
debug!("emscripten::___syscall180 (pread) {}", _which);