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Updated imports required for jq. Added get_str method in VarArgs

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This commit is contained in:
Syrus
2019-05-18 12:38:22 -07:00
parent 4ddffb8285
commit 8f345dc284
8 changed files with 97 additions and 48 deletions
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49
lib/emscripten/src/syscalls/mod.rs
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@ -38,6 +38,7 @@ use libc::{
// writev,
stat,
write,
// readlink,
};
use wasmer_runtime_core::vm::Ctx;
@ -93,9 +94,8 @@ pub fn ___syscall6(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int
// chdir
pub fn ___syscall12(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
debug!("emscripten::___syscall12 (chdir) {}", _which);
let path_addr: i32 = varargs.get(ctx);
let path_ptr = varargs.get_str(ctx);
unsafe {
let path_ptr = emscripten_memory_pointer!(ctx.memory(0), path_addr) as *const i8;
let _path = std::ffi::CStr::from_ptr(path_ptr);
let ret = chdir(path_ptr);
debug!("=> path: {:?}, ret: {}", _path, ret);
@ -122,10 +122,8 @@ pub fn ___syscall20(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
// rename
pub fn ___syscall38(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> i32 {
debug!("emscripten::___syscall38 (rename)");
let old_path_addr: u32 = varargs.get(ctx);
let new_path_addr: u32 = varargs.get(ctx);
let old_path = emscripten_memory_pointer!(ctx.memory(0), old_path_addr) as *const i8;
let new_path = emscripten_memory_pointer!(ctx.memory(0), new_path_addr) as *const i8;
let old_path = varargs.get_str(ctx);
let new_path = varargs.get_str(ctx);
let result = unsafe { rename(old_path, new_path) };
debug!(
"=> old_path: {}, new_path: {}, result: {}",
@ -139,8 +137,7 @@ pub fn ___syscall38(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> i32 {
// rmdir
pub fn ___syscall40(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
debug!("emscripten::___syscall40 (rmdir)");
let pathname: u32 = varargs.get(ctx);
let pathname_addr = emscripten_memory_pointer!(ctx.memory(0), pathname) as *const i8;
let pathname_addr = varargs.get_str(ctx);
unsafe { rmdir(pathname_addr) }
}
@ -201,9 +198,30 @@ pub fn ___syscall75(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
-1
}
pub fn ___syscall85(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
debug!("emscripten::___syscall85");
-1
// 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 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 };
debug!("=> buf: {}, buf_size: {}, return: {} ", unsafe { std::ffi::CStr::from_ptr(buf as _).to_str().unwrap() }, 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
}
pub fn ___syscall91(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
@ -397,19 +415,16 @@ pub fn ___syscall199(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
// stat64
pub fn ___syscall195(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
debug!("emscripten::___syscall195 (stat64) {}", _which);
let pathname: u32 = varargs.get(ctx);
let pathname_addr = varargs.get_str(ctx);
let buf: u32 = varargs.get(ctx);
let pathname_addr = emscripten_memory_pointer!(ctx.memory(0), pathname) as *const i8;
unsafe {
let mut _stat: stat = std::mem::zeroed();
let ret = stat(pathname_addr, &mut _stat);
debug!(
"=> pathname: {}, buf: {}, path: {} = {}\nlast os error: {}",
pathname,
buf,
"=> pathname: {}, buf: {} = {}, last os error: {}",
std::ffi::CStr::from_ptr(pathname_addr).to_str().unwrap(),
buf,
ret,
Error::last_os_error()
);