move unix code to unix only location

lib/emscripten/src/syscalls/mod.rs

@@ -276,44 +276,6 @@ pub fn ___syscall75(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     -1
 }
 
-// readlink
-pub fn ___syscall85(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> i32 {
-    debug!("emscripten::___syscall85 (readlink)");
-    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 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!(
-        "=> 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
-    );
-    ret
-}
-
 pub fn ___syscall91(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall91 - stub");
     0

lib/emscripten/src/syscalls/unix.rs

@@ -80,7 +80,7 @@ use std::ffi::CStr;
 use wasmer_runtime_core::{memory::ptr::WasmPtr, vm::Ctx};
 
 use crate::env::EmSockAddr;
-use crate::utils;
+use crate::utils::{self, get_cstr_path};
 #[allow(unused_imports)]
 use std::io::Error;
 use std::mem;
@@ -187,6 +187,35 @@ pub fn ___syscall83(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int
     result
 }
 
+/// readlink
+pub fn ___syscall85(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> i32 {
+    debug!("emscripten::___syscall85 (readlink)");
+    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 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 ret = unsafe { libc::readlink(real_path, buf as _, buf_size as _) as i32 };
+    if ret == -1 {
+        debug!("readlink failed");
+        return ret;
+    }
+    debug!(
+        "=> 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() },
+        buf_size,
+        ret
+    );
+    ret
+}
+
 /// ftruncate64
 pub fn ___syscall194(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall194 (ftruncate64) {}", _which);

lib/emscripten/src/syscalls/windows.rs

@@ -128,6 +128,12 @@ pub fn ___syscall83(_ctx: &mut Ctx, _which: c_int, _varargs: VarArgs) -> c_int {
     unimplemented!()
 }
 
+/// readlink
+pub fn ___syscall85(_ctx: &mut Ctx, _which: c_int, _varargs: VarArgs) -> c_int {
+    debug!("emscripten::___syscall85 (readlink) {}", _which);
+    -1
+}
+
 /// lchown
 pub fn ___syscall198(_ctx: &mut Ctx, _which: c_int, _varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall198 (lchown) {}", _which);