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virtio-devices: Add seccomp filter list for net worker thread

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This patch adds the seccomp filter list for the virtio_net thread, while
the list was already added for the virtio_net_ctl thread.

Partially fixes: #925

Signed-off-by: Bo Chen <chen.bo@intel.com>
This commit is contained in:
Bo Chen 2020-08-14 14:55:53 -07:00 committed by Sebastien Boeuf
parent 3d6d9ca4de
commit c70ad27247
2 changed files with 30 additions and 1 deletions
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8
virtio-devices/src/net.rs
View File

@ -490,10 +490,16 @@ impl VirtioDevice for Net {
let paused = self.paused.clone();
let paused_sync = self.paused_sync.clone();
// Retrieve seccomp filter for virtio_net thread
let virtio_net_seccomp_filter =
get_seccomp_filter(&self.seccomp_action, Thread::VirtioNet)
.map_err(ActivateError::CreateSeccompFilter)?;
thread::Builder::new()
.name("virtio_net".to_string())
.spawn(move || {
if let Err(e) = handler.run(paused, paused_sync) {
if let Err(e) = SeccompFilter::apply(virtio_net_seccomp_filter) {
error!("Error applying seccomp filter: {:?}", e);
} else if let Err(e) = handler.run(paused, paused_sync) {
error!("Error running worker: {:?}", e);
}
})

23
virtio-devices/src/seccomp_filters.rs
View File

@ -13,6 +13,7 @@ pub enum Thread {
VirtioBlk,
VirtioConsole,
VirtioIommu,
VirtioNet,
VirtioNetCtl,
VirtioPmem,
VirtioRng,
@ -96,6 +97,26 @@ fn virtio_iommu_thread_rules() -> Result<Vec<SyscallRuleSet>, Error> {
])
}
fn virtio_net_thread_rules() -> Result<Vec<SyscallRuleSet>, Error> {
Ok(vec![
allow_syscall(libc::SYS_close),
allow_syscall(libc::SYS_epoll_create1),
allow_syscall(libc::SYS_epoll_ctl),
allow_syscall(libc::SYS_dup),
allow_syscall(libc::SYS_epoll_pwait),
#[cfg(target_arch = "x86_64")]
allow_syscall(libc::SYS_epoll_wait),
allow_syscall(libc::SYS_exit),
allow_syscall(libc::SYS_futex),
allow_syscall(libc::SYS_madvise),
allow_syscall(libc::SYS_munmap),
allow_syscall(libc::SYS_read),
allow_syscall(libc::SYS_rt_sigprocmask),
allow_syscall(libc::SYS_sigaltstack),
allow_syscall(libc::SYS_write),
])
}
fn virtio_net_ctl_thread_rules() -> Result<Vec<SyscallRuleSet>, Error> {
Ok(vec![
allow_syscall(libc::SYS_close),
@ -166,6 +187,7 @@ fn get_seccomp_filter_trap(thread_type: Thread) -> Result<SeccompFilter, Error>
Thread::VirtioBlk => virtio_blk_thread_rules()?,
Thread::VirtioConsole => virtio_console_thread_rules()?,
Thread::VirtioIommu => virtio_iommu_thread_rules()?,
Thread::VirtioNet => virtio_net_thread_rules()?,
Thread::VirtioNetCtl => virtio_net_ctl_thread_rules()?,
Thread::VirtioPmem => virtio_pmem_thread_rules()?,
Thread::VirtioRng => virtio_rng_thread_rules()?,
@ -182,6 +204,7 @@ fn get_seccomp_filter_log(thread_type: Thread) -> Result<SeccompFilter, Error> {
Thread::VirtioBlk => virtio_blk_thread_rules()?,
Thread::VirtioConsole => virtio_console_thread_rules()?,
Thread::VirtioIommu => virtio_iommu_thread_rules()?,
Thread::VirtioNet => virtio_net_thread_rules()?,
Thread::VirtioNetCtl => virtio_net_ctl_thread_rules()?,
Thread::VirtioPmem => virtio_pmem_thread_rules()?,
Thread::VirtioRng => virtio_rng_thread_rules()?,