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vmm: allow TCGETS2/TCSETS2 where TCGETS/TCSETS are

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These are now used by Cloud Hypervisor when linked with Glibc 2.42.

These values should be correct for all currently supported Cloud
Hypervisor platforms, although they are not for all Linux platforms.

Closes: https://github.com/cloud-hypervisor/cloud-hypervisor/issues/7276
Signed-off-by: Alyssa Ross <hi@alyssa.is>
This commit is contained in:
Alyssa Ross
2025-09-06 13:01:23 +02:00
committed by Rob Bradford
parent 3f5c719705
commit 47cff7c37f
1 changed files with 6 additions and 0 deletions
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6
vmm/src/seccomp_filters.rs
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@@ -42,7 +42,9 @@ macro_rules! or {
// See include/uapi/asm-generic/ioctls.h in the kernel code.
const TCGETS: u64 = 0x5401;
const TCGETS2: u64 = 0x802c_542a;
const TCSETS: u64 = 0x5402;
const TCSETS2: u64 = 0x402c_542b;
const TIOCSCTTY: u64 = 0x540E;
const TIOCGPGRP: u64 = 0x540F;
const TIOCSPGRP: u64 = 0x5410;
@@ -311,7 +313,9 @@ fn create_vmm_ioctl_seccomp_rule_common(
and![Cond::new(1, ArgLen::Dword, Eq, SIOCSIFMTU)?],
and![Cond::new(1, ArgLen::Dword, Eq, SIOCSIFNETMASK)?],
and![Cond::new(1, ArgLen::Dword, Eq, TCSETS)?],
and![Cond::new(1, ArgLen::Dword, Eq, TCSETS2)?],
and![Cond::new(1, ArgLen::Dword, Eq, TCGETS)?],
and![Cond::new(1, ArgLen::Dword, Eq, TCGETS2)?],
and![Cond::new(1, ArgLen::Dword, Eq, TIOCGPGRP)?],
and![Cond::new(1, ArgLen::Dword, Eq, TIOCGPTPEER)?],
and![Cond::new(1, ArgLen::Dword, Eq, TIOCGWINSZ)?],
@@ -487,7 +491,9 @@ fn create_api_ioctl_seccomp_rule() -> Result<Vec<SeccompRule>, BackendError> {
fn create_signal_handler_ioctl_seccomp_rule() -> Result<Vec<SeccompRule>, BackendError> {
Ok(or![
and![Cond::new(1, ArgLen::Dword, Eq, TCGETS)?],
and![Cond::new(1, ArgLen::Dword, Eq, TCGETS2)?],
and![Cond::new(1, ArgLen::Dword, Eq, TCSETS)?],
and![Cond::new(1, ArgLen::Dword, Eq, TCSETS2)?],
and![Cond::new(1, ArgLen::Dword, Eq, TIOCGWINSZ)?],
])
}