Add xattr functions for OSX

Author: PlasmaPower

libc-test/build.rs

@@ -145,6 +145,7 @@ fn main() {
         cfg.header("mach/mach_time.h");
         cfg.header("malloc/malloc.h");
         cfg.header("util.h");
+        cfg.header("sys/xattr.h");
         if target.starts_with("x86") {
             cfg.header("crt_externs.h");
         }

src/unix/bsd/apple/mod.rs

@@ -1665,6 +1665,23 @@ extern {
     pub fn getpriority(which: ::c_int, who: ::id_t) -> ::c_int;
     pub fn setpriority(which: ::c_int, who: ::id_t, prio: ::c_int) -> ::c_int;
 
+    pub fn getxattr(path: *const c_char, name: *const c_char,
+                    value: *mut ::c_void, size: ::size_t) -> ::ssize_t;
+    pub fn fgetxattr(filedes: ::c_int, name: *const c_char,
+                     value: *mut ::c_void, size: ::size_t) -> ::ssize_t;
+    pub fn setxattr(path: *const c_char, name: *const c_char,
+                    value: *const ::c_void, size: ::size_t,
+                    flags: ::c_int) -> ::c_int;
+    pub fn fsetxattr(filedes: ::c_int, name: *const c_char,
+                     value: *const ::c_void, size: ::size_t,
+                     flags: ::c_int) -> ::c_int;
+    pub fn listxattr(path: *const c_char, list: *mut c_char,
+                     size: ::size_t) -> ::ssize_t;
+    pub fn flistxattr(filedes: ::c_int, list: *mut c_char,
+                      size: ::size_t) -> ::ssize_t;
+    pub fn removexattr(path: *const c_char, name: *const c_char) -> ::c_int;
+    pub fn fremovexattr(filedes: ::c_int, name: *const c_char) -> ::c_int;
+
     pub fn initgroups(user: *const ::c_char, basegroup: ::c_int) -> ::c_int;
 
     #[cfg_attr(all(target_os = "macos", target_arch = "x86"),