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https://github.com/cloud-hypervisor/cloud-hypervisor.git
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vmm: config: Close FDs for TAP devices that are provided to VM
These are owned by the config (and are duplicated before being used to create the `Tap` for the virtio-net device.) By implementing Drop on NetConfig we have issues with moving out of members that don't implement the Copy trait. This requires a small adjustment to the unit tests that use the Default::default() function. Fixes: #5197 Signed-off-by: Rob Bradford <robert.bradford@intel.com>
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@ -1150,6 +1150,17 @@ impl Clone for NetConfig {
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}
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}
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}
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}
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impl Drop for NetConfig {
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fn drop(&mut self) {
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if let Some(mut fds) = self.fds.take() {
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for fd in fds.drain(..) {
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// SAFETY: Safe as the fd was given to the config by the API
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unsafe { libc::close(fd) };
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}
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}
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}
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}
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impl RngConfig {
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impl RngConfig {
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pub fn parse(rng: &str) -> Result<Self> {
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pub fn parse(rng: &str) -> Result<Self> {
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let mut parser = OptionParser::new();
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let mut parser = OptionParser::new();
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@ -2343,6 +2354,10 @@ mod tests {
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NetConfig {
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NetConfig {
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mac: MacAddr::parse_str("de:ad:be:ef:12:34").unwrap(),
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mac: MacAddr::parse_str("de:ad:be:ef:12:34").unwrap(),
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host_mac: Some(MacAddr::parse_str("12:34:de:ad:be:ef").unwrap()),
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host_mac: Some(MacAddr::parse_str("12:34:de:ad:be:ef").unwrap()),
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fds: None,
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id: None,
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tap: None,
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vhost_socket: None,
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..Default::default()
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..Default::default()
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}
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}
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);
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);
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@ -2353,6 +2368,9 @@ mod tests {
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mac: MacAddr::parse_str("de:ad:be:ef:12:34").unwrap(),
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mac: MacAddr::parse_str("de:ad:be:ef:12:34").unwrap(),
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host_mac: Some(MacAddr::parse_str("12:34:de:ad:be:ef").unwrap()),
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host_mac: Some(MacAddr::parse_str("12:34:de:ad:be:ef").unwrap()),
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id: Some("mynet0".to_owned()),
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id: Some("mynet0".to_owned()),
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fds: None,
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tap: None,
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vhost_socket: None,
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..Default::default()
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..Default::default()
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}
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}
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);
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);
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@ -2367,6 +2385,9 @@ mod tests {
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tap: Some("tap0".to_owned()),
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tap: Some("tap0".to_owned()),
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ip: "192.168.100.1".parse().unwrap(),
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ip: "192.168.100.1".parse().unwrap(),
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mask: "255.255.255.128".parse().unwrap(),
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mask: "255.255.255.128".parse().unwrap(),
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fds: None,
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id: None,
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vhost_socket: None,
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..Default::default()
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..Default::default()
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}
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}
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);
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);
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@ -2380,6 +2401,9 @@ mod tests {
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host_mac: Some(MacAddr::parse_str("12:34:de:ad:be:ef").unwrap()),
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host_mac: Some(MacAddr::parse_str("12:34:de:ad:be:ef").unwrap()),
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vhost_user: true,
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vhost_user: true,
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vhost_socket: Some("/tmp/sock".to_owned()),
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vhost_socket: Some("/tmp/sock".to_owned()),
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fds: None,
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id: None,
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tap: None,
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..Default::default()
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..Default::default()
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}
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}
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);
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);
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@ -2392,6 +2416,10 @@ mod tests {
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num_queues: 4,
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num_queues: 4,
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queue_size: 1024,
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queue_size: 1024,
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iommu: true,
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iommu: true,
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fds: None,
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id: None,
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tap: None,
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vhost_socket: None,
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..Default::default()
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..Default::default()
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}
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}
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);
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);
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@ -2402,6 +2430,9 @@ mod tests {
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mac: MacAddr::parse_str("de:ad:be:ef:12:34").unwrap(),
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mac: MacAddr::parse_str("de:ad:be:ef:12:34").unwrap(),
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fds: Some(vec![3, 7]),
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fds: Some(vec![3, 7]),
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num_queues: 4,
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num_queues: 4,
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id: None,
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tap: None,
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vhost_socket: None,
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..Default::default()
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..Default::default()
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}
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}
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);
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);
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@ -2824,6 +2855,10 @@ mod tests {
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let mut invalid_config = valid_config.clone();
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let mut invalid_config = valid_config.clone();
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invalid_config.net = Some(vec![NetConfig {
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invalid_config.net = Some(vec![NetConfig {
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vhost_user: true,
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vhost_user: true,
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fds: None,
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id: None,
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tap: None,
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vhost_socket: None,
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..Default::default()
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..Default::default()
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}]);
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}]);
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assert_eq!(
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assert_eq!(
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@ -2835,6 +2870,9 @@ mod tests {
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still_valid_config.net = Some(vec![NetConfig {
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still_valid_config.net = Some(vec![NetConfig {
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vhost_user: true,
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vhost_user: true,
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vhost_socket: Some("/path/to/sock".to_owned()),
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vhost_socket: Some("/path/to/sock".to_owned()),
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fds: None,
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id: None,
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tap: None,
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..Default::default()
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..Default::default()
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}]);
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}]);
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still_valid_config.memory.shared = true;
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still_valid_config.memory.shared = true;
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@ -2843,6 +2881,9 @@ mod tests {
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let mut invalid_config = valid_config.clone();
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let mut invalid_config = valid_config.clone();
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invalid_config.net = Some(vec![NetConfig {
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invalid_config.net = Some(vec![NetConfig {
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fds: Some(vec![0]),
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fds: Some(vec![0]),
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id: None,
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tap: None,
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vhost_socket: None,
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..Default::default()
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..Default::default()
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}]);
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}]);
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assert_eq!(
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assert_eq!(
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@ -2853,6 +2894,10 @@ mod tests {
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let mut invalid_config = valid_config.clone();
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let mut invalid_config = valid_config.clone();
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invalid_config.net = Some(vec![NetConfig {
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invalid_config.net = Some(vec![NetConfig {
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offload_csum: false,
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offload_csum: false,
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fds: None,
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id: None,
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tap: None,
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vhost_socket: None,
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..Default::default()
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..Default::default()
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}]);
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}]);
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assert_eq!(
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assert_eq!(
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@ -2956,6 +3001,10 @@ mod tests {
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still_valid_config.net = Some(vec![NetConfig {
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still_valid_config.net = Some(vec![NetConfig {
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iommu: true,
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iommu: true,
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pci_segment: 1,
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pci_segment: 1,
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fds: None,
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id: None,
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tap: None,
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vhost_socket: None,
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..Default::default()
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..Default::default()
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}]);
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}]);
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assert!(still_valid_config.validate().is_ok());
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assert!(still_valid_config.validate().is_ok());
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@ -3024,6 +3073,10 @@ mod tests {
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invalid_config.net = Some(vec![NetConfig {
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invalid_config.net = Some(vec![NetConfig {
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iommu: false,
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iommu: false,
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pci_segment: 1,
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pci_segment: 1,
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fds: None,
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id: None,
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tap: None,
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vhost_socket: None,
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..Default::default()
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..Default::default()
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}]);
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}]);
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assert_eq!(
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assert_eq!(
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