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vmm: seccomp: unify AArch64 and x86_64 FTRUNCATE syscall

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The definition of libc::SYS_ftruncate on AArch64 is different
from that on x86_64. This commit unifies the previously hard-coded
syscall number for AArch64.

Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This commit is contained in:
Henry Wang 2020-09-17 03:05:18 +00:00 committed by Rob Bradford
parent 48544e4e82
commit 3ea4a0797d
1 changed files with 7 additions and 6 deletions
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13
vmm/src/seccomp_filters.rs
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@ -108,6 +108,12 @@ const KVM_GET_SUPPORTED_CPUID: u64 = 0xc008_ae05;
const KVM_CREATE_DEVICE: u64 = 0xc00c_aee0;
const KVM_GET_REG_LIST: u64 = 0xc008_aeb0;
// The definition of libc::SYS_ftruncate on AArch64 is different from that on x86_64.
#[cfg(target_arch = "aarch64")]
pub const SYS_FTRUNCATE: libc::c_long = 46;
#[cfg(target_arch = "x86_64")]
pub const SYS_FTRUNCATE: libc::c_long = 77;
fn create_vmm_ioctl_seccomp_rule_common() -> Result<Vec<SeccompRule>, Error> {
Ok(or![
and![Cond::new(1, ArgLen::DWORD, Eq, FIOCLEX)?],
@ -300,12 +306,7 @@ fn vmm_thread_rules() -> Result<Vec<SyscallRuleSet>, Error> {
allow_syscall(libc::SYS_fork),
allow_syscall(libc::SYS_fstat),
allow_syscall(libc::SYS_fsync),
#[cfg(target_arch = "x86_64")]
allow_syscall(libc::SYS_ftruncate),
#[cfg(target_arch = "aarch64")]
// The definition of libc::SYS_ftruncate is missing on AArch64.
// Use a hard-code number instead.
allow_syscall(46),
allow_syscall(SYS_FTRUNCATE),
#[cfg(target_arch = "aarch64")]
allow_syscall(libc::SYS_faccessat),
#[cfg(target_arch = "aarch64")]