Use c_int type for SO_SNDBUF (#355) (#357)

This is defined by POSIX as an 'int'. Using a usize causes an invalid value to be read on 64-bit big endian platforms. Signed-off-by: A. Wilcox <[email protected]>
servo · Aug 24, 2024 · 862b0e2 · 862b0e2
1 parent ccf2aad
commit 862b0e2
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/src/platform/unix/mod.rs b/src/platform/unix/mod.rs
@@ -213,8 +213,8 @@ impl OsIpcSender {
     /// Some of it is reserved by the kernel for bookkeeping.
     fn get_system_sendbuf_size(&self) -> Result<usize, UnixError> {
         unsafe {
-            let mut socket_sendbuf_size: usize = 0;
-            let mut socket_sendbuf_size_len = mem::size_of::<usize>() as socklen_t;
+            let mut socket_sendbuf_size: c_int = 0;
+            let mut socket_sendbuf_size_len = mem::size_of::<c_int>() as socklen_t;
             if getsockopt(
                 self.fd.0,
                 libc::SOL_SOCKET,
@@ -225,7 +225,7 @@ impl OsIpcSender {
             {
                 return Err(UnixError::last());
             }
-            Ok(socket_sendbuf_size)
+            Ok(socket_sendbuf_size.try_into().unwrap())
         }
     }