Add getrusage

src/header/sys_resource/mod.rs

@@ -88,14 +88,8 @@ pub unsafe extern "C" fn getrlimit(resource: c_int, rlp: *mut rlimit) -> c_int {
 pub unsafe extern "C" fn setrlimit(resource: c_int, rlp: *const rlimit) -> c_int {
     Sys::setrlimit(resource, rlp)
 }
-// #[no_mangle]
-// pub unsafe extern "C" fn getrusage(who: c_int, r_usage: *mut rusage) -> c_int {
-//     // Sys::getrusage(who, r_usage)
-//     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 getrusage(who: c_int, r_usage: *mut rusage) -> c_int {
+    Sys::getrusage(who, &mut *r_usage)
+}

src/platform/linux/mod.rs

@@ -6,9 +6,8 @@ use crate::{
     c_str::CStr,
     header::{dirent::dirent, errno::EINVAL, signal::SIGCHLD, sys_stat::S_IFIFO},
 };
-// use header::sys_resource::rusage;
 use crate::header::{
-    sys_resource::rlimit,
+    sys_resource::{rlimit, rusage},
     sys_stat::stat,
     sys_statvfs::statvfs,
     sys_time::{timeval, timezone},
@@ -76,10 +75,6 @@ pub fn e(sys: usize) -> usize {
 pub struct Sys;
 
 impl Sys {
-    // fn getrusage(who: c_int, r_usage: *mut rusage) -> c_int {
-    //     e(unsafe { syscall!(GETRUSAGE, who, r_usage) }) as c_int
-    // }
-
     pub unsafe fn ioctl(fd: c_int, request: c_ulong, out: *mut c_void) -> c_int {
         // TODO: Somehow support varargs to syscall??
         e(syscall!(IOCTL, fd, request, out)) as c_int
@@ -342,6 +337,10 @@ impl Pal for Sys {
         e(syscall!(SETRLIMIT, resource, rlimit)) as c_int
     }
 
+    fn getrusage(who: c_int, r_usage: &mut rusage) -> c_int {
+        e(unsafe { syscall!(GETRUSAGE, who, r_usage) }) as c_int
+    }
+
     fn getsid(pid: pid_t) -> pid_t {
         e(unsafe { syscall!(GETSID, pid) }) as pid_t
     }

src/platform/pal/mod.rs

@@ -4,7 +4,7 @@ use crate::{
     error::Errno,
     header::{
         dirent::dirent,
-        sys_resource::rlimit,
+        sys_resource::{rlimit, rusage},
         sys_stat::stat,
         sys_statvfs::statvfs,
         sys_time::{timeval, timezone},
@@ -128,6 +128,8 @@ pub trait Pal {
 
     unsafe fn setrlimit(resource: c_int, rlim: *const rlimit) -> c_int;
 
+    fn getrusage(who: c_int, r_usage: &mut rusage) -> c_int;
+
     fn getsid(pid: pid_t) -> pid_t;
 
     fn gettid() -> pid_t;

src/platform/redox/mod.rs

@@ -24,7 +24,7 @@ use crate::{
         fcntl, limits,
         sys_mman::{MAP_ANONYMOUS, MAP_FAILED, PROT_READ, PROT_WRITE},
         sys_random,
-        sys_resource::{rlimit, RLIM_INFINITY},
+        sys_resource::{rlimit, rusage, RLIM_INFINITY},
         sys_stat::{stat, S_ISGID, S_ISUID},
         sys_statvfs::statvfs,
         sys_time::{timeval, timezone},
@@ -529,6 +529,15 @@ impl Pal for Sys {
         -1
     }
 
+    fn getrusage(who: c_int, r_usage: &mut rusage) -> c_int {
+        //TODO
+        eprintln!(
+            "relibc getrusage({}, {:p}): not implemented",
+            who, r_usage
+        );
+        0
+    }
+
     fn getsid(pid: pid_t) -> pid_t {
         let mut buf = [0; mem::size_of::<usize>()];
         let path = if pid == 0 {