Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 61 insertions, 0 deletions

diff --git a/third_party/rust/whatsys/src/apple.rs b/third_party/rust/whatsys/src/apple.rs
new file mode 100644
index 0000000000..000fbe36cb
--- /dev/null
+++ b/third_party/rust/whatsys/src/apple.rs
@@ -0,0 +1,61 @@
+/* Based on code from sysinfo: https://crates.io/crates/sysinfo
+ * Original licenses: MIT
+ * Original author: Guillaume Gomez
+ * License file: https://github.com/GuillaumeGomez/sysinfo/blob/master/LICENSE
+ */
+
+use libc::c_int;
+
+fn get_system_info(value: c_int) -> Option<String> {
+    let mut mib: [c_int; 2] = [libc::CTL_KERN, value];
+    let mut size = 0;
+
+    // Call first to get size
+    unsafe {
+        libc::sysctl(
+            mib.as_mut_ptr(),
+            2,
+            std::ptr::null_mut(),
+            &mut size,
+            std::ptr::null_mut(),
+            0,
+        )
+    };
+
+    // exit early if we did not update the size
+    if size == 0 {
+        return None;
+    }
+
+    // set the buffer to the correct size
+    let mut buf = vec![0_u8; size as usize];
+
+    if unsafe {
+        libc::sysctl(
+            mib.as_mut_ptr(),
+            2,
+            buf.as_mut_ptr() as _,
+            &mut size,
+            std::ptr::null_mut(),
+            0,
+        )
+    } == -1
+    {
+        // If command fails return default
+        None
+    } else {
+        if let Some(pos) = buf.iter().position(|x| *x == 0) {
+            // Shrink buffer to terminate the null bytes
+            buf.resize(pos, 0);
+        }
+
+        String::from_utf8(buf).ok()
+    }
+}
+
+/// Get the version of the currently running kernel.
+///
+/// Returns `None` if an error occured.
+pub fn kernel_version() -> Option<String> {
+    get_system_info(libc::KERN_OSRELEASE)
+}