posix_fallocate(3) bindings

src/unix/bsd/freebsdlike/mod.rs

@@ -520,6 +520,8 @@ extern {
                         -> ::c_int;
     pub fn clock_gettime(clk_id: ::c_int, tp: *mut ::timespec) -> ::c_int;
     pub fn pthread_set_name_np(tid: ::pthread_t, name: *const ::c_char);
+    pub fn posix_fallocate(fd: ::c_int, offset: ::off_t,
+                           len: ::off_t) -> ::c_int;
 }
 
 cfg_if! {

src/unix/notbsd/linux/mod.rs

@@ -283,6 +283,8 @@ extern {
     pub fn ftello64(stream: *mut ::FILE) -> ::off64_t;
     pub fn fallocate(fd: ::c_int, mode: ::c_int,
                      offset: ::off_t, len: ::off_t) -> ::c_int;
+    pub fn posix_fallocate(fd: ::c_int, offset: ::off_t,
+                           len: ::off_t) -> ::c_int;
 }
 
 cfg_if! {