adding KERNEL_VERSION macro for linux.

rust-lang · Dec 20, 2022 · 3e5c258 · 3e5c258
1 parent 6a5c07f
commit 3e5c258
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diff --git a/libc-test/semver/linux.txt b/libc-test/semver/linux.txt
@@ -1146,6 +1146,7 @@ J1939_PGN_ADDRESS_COMMANDED
 J1939_PGN_MAX
 J1939_PGN_PDU1_MAX
 J1939_PGN_REQUEST
+KERNEL_VERSION
 KEYCTL_ASSUME_AUTHORITY
 KEYCTL_CHOWN
 KEYCTL_CLEAR

diff --git a/src/unix/linux_like/mod.rs b/src/unix/linux_like/mod.rs
@@ -1615,6 +1615,13 @@ safe_f! {
     pub {const} fn IPTOS_ECN(x: u8) -> u8 {
         x & ::IPTOS_ECN_MASK
     }
+
+    pub {const} fn KERNEL_VERSION(a: u32, b: u32, c: u32) -> u32 {
+        ((a << 16) + (b << 8)) + match c {
+            0 ..= 255 => c,
+            _ => 255,
+        }
+    }
 }
 
 extern "C" {