Merge branch 'add-socket-pair-builtin' into combined

Author: sivizius

src/builtins/mod.rs

@@ -170,7 +170,7 @@ pub mod user_id;
 pub use self::{
     basic::BasicCapabilities,
     kill::Kill,
-    network::{Netlink, Networking},
+    network::{Netlink, Networking, SocketPair},
     systemio::SystemIO,
     time::Time,
     truncate::Truncate,

src/builtins/network/mod.rs

@@ -1,6 +1,7 @@
 //! Contains a [`RuleSet`] for allowing networking-related syscalls.
 
 pub mod netlink;
+pub mod socket_pair;
 
 use {
     super::YesReally,
@@ -9,7 +10,7 @@ use {
     syscalls::Sysno,
 };
 
-pub use self::netlink::Netlink;
+pub use self::{netlink::Netlink, socket_pair::SocketPair};
 
 // TODO: make bind calls conditional on the DGRAM/UNIX/STREAM flag in each function
 

src/builtins/network/socket_pair.rs

@@ -0,0 +1,40 @@
+//! Allow `sys_socketpair`.
+
+use {crate::RuleSet, syscalls::Sysno};
+
+/// Allow the syscall `socketpair` to create a pair of connected sockets.
+#[derive(Clone, Copy, Debug, Default, Eq, Hash, PartialEq, PartialOrd)]
+#[must_use]
+pub struct SocketPair;
+
+impl RuleSet for SocketPair {
+    fn simple_rules(&self) -> Vec<Sysno> {
+        Vec::from([Sysno::socketpair])
+    }
+
+    fn name(&self) -> &'static str {
+        "SocketPair"
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use {super::SocketPair, crate::RuleSet as _, syscalls::Sysno};
+
+    #[test]
+    fn name() {
+        assert_eq!(SocketPair.name(), "SocketPair");
+    }
+
+    #[test]
+    fn simple_rules() {
+        let rules = SocketPair.simple_rules();
+        assert_eq!(rules.len(), 1);
+        assert!(rules.contains(&Sysno::socketpair));
+    }
+
+    #[test]
+    fn conditional_rules() {
+        assert!(SocketPair.conditional_rules().is_empty());
+    }
+}