Implement sys/file.h

src/platform/src/linux/mod.rs

@@ -84,6 +84,10 @@ pub fn fchown(fildes: c_int, owner: uid_t, group: gid_t) -> c_int {
     e(unsafe { syscall!(FCHOWN, fildes, owner, group) }) as c_int
 }
 
+pub fn flock(fd: c_int, operation: c_int) -> c_int {
+    e(unsafe { syscall!(FLOCK, fd, operation) }) as c_int
+}
+
 pub fn fstat(fildes: c_int, buf: *mut stat) -> c_int {
     let empty_cstr: *const c_char = unsafe { ::cstr_from_bytes_with_nul_unchecked(b"\0") };
     e(unsafe { syscall!(NEWFSTATAT, fildes, empty_cstr, buf, AT_EMPTY_PATH) }) as c_int

src/platform/src/redox/mod.rs

@@ -226,6 +226,11 @@ pub fn fcntl(fd: c_int, cmd: c_int, args: c_int) -> c_int {
     e(syscall::fcntl(fd as usize, cmd as usize, args as usize)) as c_int
 }
 
+pub fn flock(_fd: c_int, _operation: c_int) -> c_int {
+    // TODO: Redox does not have file locking yet
+    0
+}
+
 pub fn fork() -> pid_t {
     e(unsafe { syscall::clone(0) }) as pid_t
 }

src/platform/src/types.rs

@@ -1,3 +1,4 @@
+use core::mem;
 #[cfg(target_os = "redox")]
 use syscall::data::TimeSpec as redox_timespec;
 // Use repr(u8) as LLVM expects `void*` to be the same as `i8*` to help enable