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vmm: Add missing syscalls to the seccomp filters

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Both clock_gettime and gettimeofday syscalls where missing when running
Cloud-Hypervisor on a Linux host without vDSO enabled. On a system with
vDSO enabled, the syscalls performed by vDSO were not filtered, that's
why we didn't have to whitelist them.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2020-03-27 09:16:34 +01:00 committed by Rob Bradford
parent 33be24bd5a
commit e4ea8b0bef
1 changed files with 2 additions and 0 deletions
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2
vmm/src/seccomp_filters.rs
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@ -175,6 +175,7 @@ pub fn vmm_thread_filter() -> Result<SeccompFilter, Error> {
allow_syscall(libc::SYS_arch_prctl),
allow_syscall(libc::SYS_bind),
allow_syscall(libc::SYS_brk),
allow_syscall(libc::SYS_clock_gettime),
allow_syscall(libc::SYS_clone),
allow_syscall(libc::SYS_close),
allow_syscall(libc::SYS_connect),
@ -195,6 +196,7 @@ pub fn vmm_thread_filter() -> Result<SeccompFilter, Error> {
allow_syscall(libc::SYS_futex),
allow_syscall(libc::SYS_getpid),
allow_syscall(libc::SYS_getrandom),
allow_syscall(libc::SYS_gettimeofday),
allow_syscall(libc::SYS_getuid),
allow_syscall_if(libc::SYS_ioctl, create_vmm_ioctl_seccomp_rule()?),
allow_syscall(libc::SYS_listen),