resource: Add crate for sys/resource.h

Add the basics of sys/resource.h so that work can begin on sys/wait.h

Cargo.lock

@@ -257,6 +257,7 @@ dependencies = [
  "grp 0.1.0",
  "mman 0.1.0",
  "platform 0.1.0",
+ "resource 0.1.0",
  "semaphore 0.1.0",
  "stat 0.1.0",
  "stdio 0.1.0",
@@ -277,6 +278,15 @@ dependencies = [
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "resource"
+version = "0.1.0"
+dependencies = [
+ "cbindgen 0.5.0",
+ "platform 0.1.0",
+ "sys_time 0.1.0",
+]
+
 [[package]]
 name = "rustc-ap-proc_macro"
 version = "40.0.0"

Cargo.toml

@@ -12,13 +12,14 @@ members = ["src/crt0"]
 
 [dependencies]
 compiler_builtins = { git = "https://github.com/rust-lang-nursery/compiler-builtins.git", default-features = false, features = ["mem"] }
-platform = { path = "src/platform" }
 ctype = { path = "src/ctype" }
 errno = { path = "src/errno" }
 fcntl = { path = "src/fcntl" }
 grp = { path = "src/grp" }
 semaphore = { path = "src/semaphore" }
 mman = { path = "src/mman" }
+platform = { path = "src/platform" }
+resource = { path = "src/resource" }
 stat = { path = "src/stat" }
 stdio = { path = "src/stdio" }
 stdlib = { path = "src/stdlib" }

src/resource/Cargo.toml

+[package]
+name = "resource"
+version = "0.1.0"
+authors = ["Dan Robertson <danlrobertson89@gmail.com>"]
+
+[build-dependencies]
+cbindgen = { path = "../../cbindgen" }
+
+[dependencies]
+platform = { path = "../platform" }
+sys_time = { path = "../sys_time" }

src/resource/build.rs

+extern crate cbindgen;
+
+use std::{env, fs};
+
+fn main() {
+    let crate_dir = env::var("CARGO_MANIFEST_DIR").expect("CARGO_MANIFEST_DIR not set");
+    fs::create_dir_all("../../target/include").expect("failed to create include directory");
+    cbindgen::generate(crate_dir)
+        .expect("failed to generate bindings")
+        .write_to_file("../../target/include/sys/resource.h");
+}

src/resource/cbindgen.toml

+sys_includes = ["sys/types.h"]
+include_guard = "_SYS_RESOURCE_H"
+language = "C"
+
+[enum]
+prefix_with_name = true

src/resource/src/lib.rs

+//! sys/resource.h implementation for Redox, following
+//! http://pubs.opengroup.org/onlinepubs/7908799/xsh/sysresource.h.html
+
+#![no_std]
+
+extern crate platform;
+extern crate sys_time;
+
+use platform::types::*;
+use sys_time::timeval;
+
+type rlim_t = u64;
+
+#[repr(C)]
+pub struct rlimit {
+    pub rlim_cur: rlim_t,
+    pub rlim_max: rlim_t,
+}
+
+#[repr(C)]
+pub struct rusage {
+    pub ru_utime: timeval,
+    pub ru_stime: timeval,
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn getpriority(which: c_int, who: id_t) -> c_int {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn getrlimit(resource: c_int, rlp: *mut rlimit) -> c_int {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn getrusage(who: c_int, r_usage: *mut rusage) -> c_int {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn setpriority(which: c_int, who: id_t, nice: c_int) -> c_int {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn setrlimit(resource: c_int, rlp: *const rlimit) -> c_int {
+    unimplemented!();
+}