add unix utilities assumed portable (expecting build failures)

Author: Andrew Salmon

src/unix/mod.rs

@@ -518,6 +518,9 @@ extern {
                    link_name = "kill$UNIX2003")]
     pub fn kill(pid: pid_t, sig: ::c_int) -> ::c_int;
 
+    pub fn brk(addr: *mut ::c_void) -> ::c_int;
+    pub fn sbrk(increment: ::intptr_t) -> *mut ::c_void;
+
     pub fn mlock(addr: *const ::c_void, len: ::size_t) -> ::c_int;
     pub fn munlock(addr: *const ::c_void, len: ::size_t) -> ::c_int;
     pub fn mlockall(flags: ::c_int) -> ::c_int;
@@ -584,6 +587,8 @@ extern {
     #[cfg_attr(target_os = "netbsd", link_name = "__gettimeofday50")]
     pub fn gettimeofday(tp: *mut ::timeval,
                         tz: *mut ::c_void) -> ::c_int;
+    #[cfg_attr(target_os = "netbsd", link_name = "__settimeofday50")]
+    pub fn settimeofday(tv: *const timeval, tz: *const ::timezone) -> ::c_int;
     #[cfg_attr(target_os = "netbsd", link_name = "__times13")]
     pub fn times(buf: *mut ::tms) -> ::clock_t;
 
@@ -745,6 +750,7 @@ extern {
     pub fn daemon(nochdir: ::c_int, noclose: ::c_int) -> ::c_int;
     pub fn gethostname(name: *mut ::c_char, len: ::size_t) -> ::c_int;
     pub fn chroot(name: *const ::c_char) -> ::c_int;
+    pub fn acct(filename: *const ::c_char) -> ::c_int;
     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),
                link_name = "usleep$UNIX2003")]
     pub fn usleep(secs: ::c_uint) -> ::c_int;
@@ -817,6 +823,8 @@ extern {
                        -> ::c_int;
     #[cfg_attr(target_os = "netbsd", link_name = "__sigpending14")]
     pub fn sigpending(set: *mut sigset_t) -> ::c_int;
+    #[cfg_attr(target_os = "netbsd", link_name = "__sigsuspend14")]
+    pub fn sigsuspend(mask: *const sigset_t) -> ::c_int;
 
     #[cfg_attr(target_os = "netbsd", link_name = "__timegm50")]
     pub fn timegm(tm: *mut ::tm) -> time_t;

src/unix/notbsd/mod.rs

@@ -853,6 +853,9 @@ extern {
     pub fn sched_getscheduler(pid: ::pid_t) -> ::c_int;
     pub fn sched_get_priority_max(policy: ::c_int) -> ::c_int;
     pub fn sched_get_priority_min(policy: ::c_int) -> ::c_int;
+    pub fn sched_setparam(pid: ::pid_t, param: *const sched_param) -> ::c_int;
+    pub fn sched_getparam(pid: ::pid_t, param: *mut sched_param) -> ::c_int;
+    pub fn sched_rr_get_interval(pid: ::pid_t, tp: *mut ::timespec) -> ::c_int;
     pub fn epoll_create(size: ::c_int) -> ::c_int;
     pub fn epoll_create1(flags: ::c_int) -> ::c_int;
     pub fn epoll_ctl(epfd: ::c_int,