Merge branch 'setrlimit_impl' into 'master'

sys_resource: setrlimit implementation proposal.

See merge request redox-os/relibc!366

src/header/sys_resource/mod.rs

@@ -71,6 +71,10 @@ pub unsafe extern "C" fn getrlimit(resource: c_int, rlp: *mut rlimit) -> c_int {
     Sys::getrlimit(resource, rlp)
 }
 
+#[no_mangle]
+pub unsafe extern "C" fn setrlimit(resource: c_int, rlp: *const rlimit) -> c_int {
+    Sys::setrlimit(rsource, rlp)
+}
 // #[no_mangle]
 // pub unsafe extern "C" fn getrusage(who: c_int, r_usage: *mut rusage) -> c_int {
 //     // Sys::getrusage(who, r_usage)
@@ -82,7 +86,3 @@ pub unsafe extern "C" fn getrlimit(resource: c_int, rlp: *mut rlimit) -> c_int {
 //     unimplemented!();
 // }
 //
-// #[no_mangle]
-// pub unsafe extern "C" fn setrlimit(resource: c_int, rlp: *const rlimit) -> c_int {
-//     unimplemented!();
-// }

src/platform/linux/mod.rs

@@ -267,6 +267,10 @@ impl Pal for Sys {
         e(syscall!(GETRLIMIT, resource, rlim)) as c_int
     }
 
+    unsafe fn setrlimit(resource: c_int, rlimit: *const rlimit) -> c_int {
+        e(syscall!(SETRLIMIT, resource, rlim)) as c_int
+    }
+
     fn getsid(pid: pid_t) -> pid_t {
         e(unsafe { syscall!(GETSID, pid) }) as pid_t
     }

src/platform/pal/mod.rs

@@ -100,6 +100,8 @@ pub trait Pal {
 
     unsafe fn getrlimit(resource: c_int, rlim: *mut rlimit) -> c_int;
 
+    unsafe fn setrlimit(resource: c_int, rlim: *const rlimit) -> c_int;
+
     fn getsid(pid: pid_t) -> pid_t;
 
     fn gettid() -> pid_t;

src/platform/redox/mod.rs

@@ -535,6 +535,11 @@ impl Pal for Sys {
         0
     }
 
+    unsafe fn setrlimit(resource: c_int, rlim: *const rlimit) -> c_int {
+        unsafe { errno = EPERM };
+        -1
+    }
+
     fn getsid(pid: pid_t) -> pid_t {
         //TODO
         unsafe { errno = ENOSYS };