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vmm: seccomp: Permit TUNGETIFF through the filter

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This is used to obtain the TAP device name.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford 2020-12-16 16:59:02 +00:00 committed by Samuel Ortiz
parent 385d734847
commit 444905071b
1 changed files with 2 additions and 0 deletions
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2
vmm/src/seccomp_filters.rs
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@ -51,6 +51,7 @@ const FIOCLEX: u64 = 0x5451;
const FIONBIO: u64 = 0x5421;
// See include/uapi/linux/if_tun.h in the kernel code.
const TUNGETIFF: u64 = 0x8004_54d2;
const TUNSETIFF: u64 = 0x4004_54ca;
const TUNSETOFFLOAD: u64 = 0x4004_54d0;
const TUNSETVNETHDRSZ: u64 = 0x4004_54d8;
@ -155,6 +156,7 @@ fn create_vmm_ioctl_seccomp_rule_common() -> Result<Vec<SeccompRule>, Error> {
and![Cond::new(1, ArgLen::DWORD, Eq, TCGETS)?],
and![Cond::new(1, ArgLen::DWORD, Eq, TIOCGWINSZ)?],
and![Cond::new(1, ArgLen::DWORD, Eq, TUNGETFEATURES)?],
and![Cond::new(1, ArgLen::DWORD, Eq, TUNGETIFF)?],
and![Cond::new(1, ArgLen::DWORD, Eq, TUNSETIFF)?],
and![Cond::new(1, ArgLen::DWORD, Eq, TUNSETOFFLOAD)?],
and![Cond::new(1, ArgLen::DWORD, Eq, TUNSETVNETHDRSZ)?],