Implement fallocate and clock.

c-scape/src/fs/fallocate.rs

@@ -0,0 +1,16 @@
+use crate::convert_res;
+use libc::{c_int, off_t};
+use rustix::fd::BorrowedFd;
+use rustix::fs::FallocateFlags;
+
+#[no_mangle]
+unsafe extern "C" fn fallocate(fd: c_int, mode: c_int, offset: off_t, len: off_t) -> c_int {
+    libc!(libc::fallocate(fd, mode, offset, len));
+
+    let fd = BorrowedFd::borrow_raw(fd);
+    let mode = FallocateFlags::from_bits_retain(mode as _);
+    match convert_res(rustix::fs::fallocate(fd, mode, offset as _, len as _)) {
+        Some(()) => 0,
+        None => -1,
+    }
+}

c-scape/src/fs/mod.rs

@@ -3,6 +3,7 @@ mod access;
 mod chmod;
 mod dir;
 mod fadvise;
+mod fallocate;
 mod fcntl;
 mod flock;
 mod inotify;

c-scape/src/time/mod.rs

@@ -126,3 +126,17 @@ unsafe extern "C" fn difftime(time1: libc::time_t, time0: libc::time_t) -> f64 {
 
     (time1 as i128 - time0 as i128) as f64
 }
+
+#[no_mangle]
+unsafe extern "C" fn clock() -> libc::clock_t {
+    //libc!(libc::clock());
+
+    let time = rustix::time::clock_gettime(rustix::time::ClockId::ProcessCPUTime);
+
+    time.tv_sec
+        .checked_mul(1_000_000)
+        .map(|usec| usec + time.tv_nsec / 1000)
+        .unwrap_or(-1)
+        .try_into()
+        .unwrap_or(-1)
+}