add syscalls for sqlite3

Cargo.lock

@@ -1333,6 +1333,7 @@ dependencies = [
  "structopt 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "wabt 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasmer-clif-backend 0.2.0",
+ "wasmer-dynasm-backend 0.1.0",
  "wasmer-emscripten 0.2.1",
  "wasmer-llvm-backend 0.1.0",
  "wasmer-runtime 0.2.1",
@@ -1371,6 +1372,8 @@ dependencies = [
  "dynasm 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "dynasmrt 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.50 (registry+https://github.com/rust-lang/crates.io-index)",
+ "nix 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasmer-runtime-core 0.2.1",
  "wasmparser 0.28.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

lib/emscripten/src/lib.rs

@@ -474,10 +474,12 @@ pub fn generate_emscripten_env(globals: &mut EmscriptenGlobals) -> ImportObject
             "___syscall75" => func!(crate::syscalls::___syscall75),
             "___syscall85" => func!(crate::syscalls::___syscall85),
             "___syscall91" => func!(crate::syscalls::___syscall191),
+            "___syscall94" => func!(crate::syscalls::___syscall194),
             "___syscall97" => func!(crate::syscalls::___syscall97),
             "___syscall102" => func!(crate::syscalls::___syscall102),
             "___syscall110" => func!(crate::syscalls::___syscall110),
             "___syscall114" => func!(crate::syscalls::___syscall114),
+            "___syscall118" => func!(crate::syscalls::___syscall118),
             "___syscall122" => func!(crate::syscalls::___syscall122),
             "___syscall140" => func!(crate::syscalls::___syscall140),
             "___syscall142" => func!(crate::syscalls::___syscall142),
@@ -496,6 +498,7 @@ pub fn generate_emscripten_env(globals: &mut EmscriptenGlobals) -> ImportObject
             "___syscall199" => func!(crate::syscalls::___syscall199),
             "___syscall201" => func!(crate::syscalls::___syscall201),
             "___syscall202" => func!(crate::syscalls::___syscall202),
+            "___syscall207" => func!(crate::syscalls::___syscall207),
             "___syscall212" => func!(crate::syscalls::___syscall212),
             "___syscall220" => func!(crate::syscalls::___syscall220),
             "___syscall221" => func!(crate::syscalls::___syscall221),

lib/emscripten/src/syscalls/unix.rs

@@ -4,7 +4,6 @@ use crate::varargs::VarArgs;
 use libc::{
     accept,
     bind,
-    // ENOTTY,
     c_char,
     c_int,
     c_void,
@@ -12,17 +11,23 @@ use libc::{
     // fcntl, setsockopt, getppid
     connect,
     dup2,
+    fchmod,
+    fchown,
     fcntl,
+    // ENOTTY,
+    fsync,
     getgid,
     getpeername,
     getsockname,
     getsockopt,
+    gid_t,
     in_addr_t,
     in_port_t,
     ioctl,
     // iovec,
     listen,
     mkdir,
+    mode_t,
     msghdr,
     open,
     pid_t,
@@ -43,6 +48,7 @@ use libc::{
     sockaddr,
     socket,
     socklen_t,
+    uid_t,
     uname,
     utsname,
     EINVAL,
@@ -134,6 +140,15 @@ pub fn ___syscall202(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     }
 }
 
+/// fchown
+pub fn ___syscall207(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
+    debug!("emscripten::___syscall207 (fchown) {}", _which);
+    let fd: c_int = varargs.get(ctx);
+    let owner: uid_t = varargs.get(ctx);
+    let group: gid_t = varargs.get(ctx);
+    unsafe { fchown(fd, owner, group) }
+}
+
 /// dup3
 pub fn ___syscall330(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> pid_t {
     // Implementation based on description at https://linux.die.net/man/2/dup3
@@ -499,6 +514,14 @@ pub fn ___syscall181(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_in
     status
 }
 
+/// fchmod
+pub fn ___syscall94(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
+    debug!("emscripten::___syscall118 (fchmod) {}", _which);
+    let fd: c_int = varargs.get(ctx);
+    let mode: mode_t = varargs.get(ctx);
+    unsafe { fchmod(fd, mode) }
+}
+
 /// wait4
 #[allow(clippy::cast_ptr_alignment)]
 pub fn ___syscall114(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> pid_t {
@@ -517,6 +540,13 @@ pub fn ___syscall114(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> pid_
     res
 }
 
+/// fsync
+pub fn ___syscall118(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
+    debug!("emscripten::___syscall118 (fsync) {}", _which);
+    let fd: c_int = varargs.get(ctx);
+    unsafe { fsync(fd) }
+}
+
 // select
 #[allow(clippy::cast_ptr_alignment)]
 pub fn ___syscall142(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {

lib/emscripten/src/syscalls/windows.rs

@@ -103,6 +103,12 @@ pub fn ___syscall54(_ctx: &mut Ctx, which: c_int, mut _varargs: VarArgs) -> c_in
     -1
 }
 
+/// fchmod
+pub fn ___syscall94(_ctx: &mut Ctx, _which: c_int, _varargs: VarArgs) -> c_int {
+    debug!("emscripten::___syscall118 (fchmod) {}", _which);
+    unimplemented!()
+}
+
 // socketcall
 #[allow(clippy::cast_ptr_alignment)]
 pub fn ___syscall102(_ctx: &mut Ctx, which: c_int, mut _varargs: VarArgs) -> c_int {
@@ -112,6 +118,12 @@ pub fn ___syscall102(_ctx: &mut Ctx, which: c_int, mut _varargs: VarArgs) -> c_i
     -1
 }
 
+/// fsync
+pub fn ___syscall118(_ctx: &mut Ctx, _which: c_int, _varargs: VarArgs) -> c_int {
+    debug!("emscripten::___syscall118 (fsync) {}", _which);
+    unimplemented!()
+}
+
 // pread
 pub fn ___syscall180(_ctx: &mut Ctx, which: c_int, mut _varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall180 (pread) {}", which);
@@ -160,3 +172,9 @@ pub fn ___syscall122(_ctx: &mut Ctx, which: c_int, mut _varargs: VarArgs) -> c_i
     let _ = which;
     -1
 }
+
+/// fchown
+pub fn ___syscall207(_ctx: &mut Ctx, _which: c_int, _varargs: VarArgs) -> c_int {
+    debug!("emscripten::___syscall207 (fchown) {}", _which);
+    unimplemented!()
+}