Auto merge of #608 - Uplifting:unix, r=alexcrichton

add a number of linux syscalls

vfork, wait4, getresuid, getresgid, personality, vhangup,
swapon, swapoff, getdomainname, setdomainname, iopl, ioperm

libc-test/build.rs

@@ -181,6 +181,9 @@ fn main() {
         cfg.header("sys/fsuid.h");
         cfg.header("pty.h");
         cfg.header("shadow.h");
+        if x86_64 {
+            cfg.header("sys/io.h");
+        }
     }
 
     if linux || android {
@@ -194,6 +197,8 @@ fn main() {
         cfg.header("sys/sendfile.h");
         cfg.header("sys/vfs.h");
         cfg.header("sys/syscall.h");
+        cfg.header("sys/personality.h");
+        cfg.header("sys/swap.h");
         if !uclibc {
             cfg.header("sys/sysinfo.h");
         }

src/unix/notbsd/linux/mod.rs

@@ -704,6 +704,10 @@ pub const PR_CAP_AMBIENT_RAISE: ::c_int = 2;
 pub const PR_CAP_AMBIENT_LOWER: ::c_int = 3;
 pub const PR_CAP_AMBIENT_CLEAR_ALL: ::c_int = 4;
 
+pub const ITIMER_REAL: ::c_int = 0;
+pub const ITIMER_VIRTUAL: ::c_int = 1;
+pub const ITIMER_PROF: ::c_int = 2;
+
 pub const XATTR_CREATE: ::c_int = 0x1;
 pub const XATTR_REPLACE: ::c_int = 0x2;
 
@@ -1006,6 +1010,9 @@ extern {
                    flags: ::c_int) -> ::ssize_t;
     pub fn recvmsg(fd: ::c_int, msg: *mut ::msghdr, flags: ::c_int)
                    -> ::ssize_t;
+    pub fn getdomainname(name: *mut ::c_char, len: ::size_t) -> ::c_int;
+    pub fn setdomainname(name: *const ::c_char, len: ::size_t) -> ::c_int;
+    pub fn vhangup() -> ::c_int;
 }
 
 extern {

src/unix/notbsd/linux/other/b64/x86_64.rs

@@ -574,4 +574,7 @@ extern {
                        argc: ::c_int, ...);
     pub fn swapcontext(uocp: *mut ucontext_t,
                        ucp: *const ucontext_t) -> ::c_int;
+    pub fn iopl(level: ::c_int) -> ::c_int;
+    pub fn ioperm(from: ::c_ulong, num: ::c_ulong,
+                  turn_on: ::c_int) -> ::c_int;
 }

src/unix/notbsd/mod.rs

@@ -989,9 +989,19 @@ extern {
     pub fn sigsuspend(mask: *const ::sigset_t) -> ::c_int;
     pub fn setreuid(ruid: ::uid_t, euid: ::uid_t) -> ::c_int;
     pub fn setregid(rgid: ::gid_t, egid: ::gid_t) -> ::c_int;
+    pub fn getresuid(ruid: *mut ::uid_t, euid: *mut ::uid_t,
+                     suid: *mut ::uid_t) -> ::c_int;
+    pub fn getresgid(rgid: *mut ::gid_t, egid: *mut ::gid_t,
+                     sgid: *mut ::gid_t) -> ::c_int;
+    pub fn personality(persona: ::c_ulong) -> ::c_int;
+    pub fn swapon(path: *const ::c_char, swapflags: ::c_int) -> ::c_int;
+    pub fn swapoff(puath: *const ::c_char) -> ::c_int;
     pub fn acct(filename: *const ::c_char) -> ::c_int;
     pub fn brk(addr: *mut ::c_void) -> ::c_int;
     pub fn sbrk(increment: ::intptr_t) -> *mut ::c_void;
+    pub fn vfork() -> ::pid_t;
+    pub fn wait4(pid: ::pid_t, status: *mut ::c_int, options: ::c_int,
+                 rusage: *mut ::rusage) -> ::pid_t;
 }
 
 cfg_if! {