Auto merge of rust-lang#571 - Mic92:dirfd, r=alexcrichton

add dirfd on unix

Author: bors

src/unix/bsd/apple/mod.rs

@@ -1559,6 +1559,8 @@ extern {
     pub fn lio_listio(mode: ::c_int, aiocb_list: *const *mut aiocb,
                       nitems: ::c_int, sevp: *mut sigevent) -> ::c_int;
 
+    pub fn dirfd(dirp: *mut ::DIR) -> ::c_int;
+
     pub fn lutimes(file: *const ::c_char, times: *const ::timeval) -> ::c_int;
 
     pub fn getutxent() -> *mut utmpx;

src/unix/bsd/freebsdlike/mod.rs

@@ -918,6 +918,7 @@ extern {
     pub fn aio_cancel(fd: ::c_int, aiocbp: *mut aiocb) -> ::c_int;
     pub fn lio_listio(mode: ::c_int, aiocb_list: *const *mut aiocb,
                       nitems: ::c_int, sevp: *mut sigevent) -> ::c_int;
+    pub fn dirfd(dirp: *mut ::DIR) -> ::c_int;
     pub fn getnameinfo(sa: *const ::sockaddr,
                        salen: ::socklen_t,
                        host: *mut ::c_char,

src/unix/bsd/netbsdlike/openbsdlike/mod.rs

@@ -457,6 +457,7 @@ pub const KI_MAXLOGNAME: ::c_int = 32;
 pub const KI_EMULNAMELEN: ::c_int = 8;
 
 extern {
+    pub fn dirfd(dirp: *mut ::DIR) -> ::c_int;
     pub fn getnameinfo(sa: *const ::sockaddr,
                        salen: ::socklen_t,
                        host: *mut ::c_char,

src/unix/haiku/mod.rs

@@ -749,6 +749,7 @@ extern {
     pub fn ioctl(fd: ::c_int, request: ::c_int, ...) -> ::c_int;
     pub fn mprotect(addr: *const ::c_void, len: ::size_t, prot: ::c_int)
                     -> ::c_int;
+    pub fn dirfd(dirp: *mut ::DIR) -> ::c_int;
     pub fn getnameinfo(sa: *const ::sockaddr,
                        salen: ::socklen_t,
                        host: *mut ::c_char,

src/unix/notbsd/mod.rs

@@ -835,6 +835,7 @@ extern {
                            rqtp: *const ::timespec,
                            rmtp:  *mut ::timespec) -> ::c_int;
     pub fn clock_settime(clk_id: clockid_t, tp: *const ::timespec) -> ::c_int;
+    pub fn dirfd(dirp: *mut ::DIR) -> ::c_int;
     pub fn settimeofday(tv: *const ::timeval, tz: *const ::timezone) -> ::c_int;
 
     pub fn prctl(option: ::c_int, ...) -> ::c_int;