uClibc: add missing fd exports

Author: jhwgh1968

src/unix/uclibc/mod.rs

@@ -1634,6 +1634,8 @@ extern {
     pub fn uselocale(loc: ::locale_t) -> ::locale_t;
     pub fn creat64(path: *const c_char, mode: mode_t) -> ::c_int;
     pub fn fstat64(fildes: ::c_int, buf: *mut stat64) -> ::c_int;
+    pub fn fstatat64(fildes: ::c_int, path: *const ::c_char,
+                     buf: *mut stat64, flag: ::c_int) -> ::c_int;
     pub fn ftruncate64(fd: ::c_int, length: off64_t) -> ::c_int;
     pub fn getrlimit64(resource: ::c_int, rlim: *mut rlimit64) -> ::c_int;
     pub fn lseek64(fd: ::c_int, offset: off64_t, whence: ::c_int) -> off64_t;
@@ -1853,6 +1855,8 @@ extern {
 
     pub fn seekdir(dirp: *mut ::DIR, loc: ::c_long);
 
+    pub fn dirfd(dirp: *mut ::DIR) -> ::c_int;
+
     pub fn telldir(dirp: *mut ::DIR) -> ::c_long;
     pub fn madvise(addr: *mut ::c_void, len: ::size_t, advice: ::c_int)
                   -> ::c_int;