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#[cfg(target_os = "linux")]
#[cfg(feature = "process")]
mod test_prctl {
use std::ffi::CStr;
use nix::sys::prctl;
#[cfg_attr(qemu, ignore)]
#[test]
fn test_get_set_subreaper() {
let original = prctl::get_child_subreaper().unwrap();
prctl::set_child_subreaper(true).unwrap();
let subreaper = prctl::get_child_subreaper().unwrap();
assert!(subreaper);
prctl::set_child_subreaper(original).unwrap();
}
#[test]
fn test_get_set_dumpable() {
let original = prctl::get_dumpable().unwrap();
prctl::set_dumpable(false).unwrap();
let dumpable = prctl::get_dumpable().unwrap();
assert!(!dumpable);
prctl::set_dumpable(original).unwrap();
}
#[test]
fn test_get_set_keepcaps() {
let original = prctl::get_keepcaps().unwrap();
prctl::set_keepcaps(true).unwrap();
let keepcaps = prctl::get_keepcaps().unwrap();
assert!(keepcaps);
prctl::set_keepcaps(original).unwrap();
}
#[test]
fn test_get_set_clear_mce_kill() {
use prctl::PrctlMCEKillPolicy::*;
prctl::set_mce_kill(PR_MCE_KILL_LATE).unwrap();
let mce = prctl::get_mce_kill().unwrap();
assert_eq!(mce, PR_MCE_KILL_LATE);
prctl::clear_mce_kill().unwrap();
let mce = prctl::get_mce_kill().unwrap();
assert_eq!(mce, PR_MCE_KILL_DEFAULT);
}
#[cfg_attr(qemu, ignore)]
#[test]
fn test_get_set_pdeathsig() {
use nix::sys::signal::Signal;
let original = prctl::get_pdeathsig().unwrap();
prctl::set_pdeathsig(Signal::SIGUSR1).unwrap();
let sig = prctl::get_pdeathsig().unwrap();
assert_eq!(sig, Some(Signal::SIGUSR1));
prctl::set_pdeathsig(original).unwrap();
}
#[test]
fn test_get_set_name() {
let original = prctl::get_name().unwrap();
let long_name =
CStr::from_bytes_with_nul(b"0123456789abcdefghijklmn\0").unwrap();
prctl::set_name(long_name).unwrap();
let res = prctl::get_name().unwrap();
// name truncated by kernel to TASK_COMM_LEN
assert_eq!(&long_name.to_str().unwrap()[..15], res.to_str().unwrap());
let short_name = CStr::from_bytes_with_nul(b"01234567\0").unwrap();
prctl::set_name(short_name).unwrap();
let res = prctl::get_name().unwrap();
assert_eq!(short_name.to_str().unwrap(), res.to_str().unwrap());
prctl::set_name(&original).unwrap();
}
#[cfg_attr(qemu, ignore)]
#[test]
fn test_get_set_timerslack() {
let original = prctl::get_timerslack().unwrap() as libc::c_ulong;
let slack = 60_000;
prctl::set_timerslack(slack).unwrap();
let res = prctl::get_timerslack().unwrap() as libc::c_ulong;
assert_eq!(slack, res);
prctl::set_timerslack(original).unwrap();
}
// Loongarch need to use a newer QEMU that disabled these PRCTL subcodes/methods.
// So we should ignore them when testing in QEMU environments.
#[cfg_attr(all(qemu, target_arch = "loongarch64"), ignore)]
#[test]
fn test_disable_enable_perf_events() {
prctl::task_perf_events_disable().unwrap();
prctl::task_perf_events_enable().unwrap();
}
#[test]
fn test_get_set_no_new_privs() {
prctl::set_no_new_privs().unwrap();
let no_new_privs = prctl::get_no_new_privs().unwrap();
assert!(no_new_privs);
}
// Loongarch need to use a newer QEMU that disabled these PRCTL subcodes/methods
// So we should ignore them when testing in QEMU environments.
#[cfg_attr(all(qemu, target_arch = "loongarch64"), ignore)]
#[test]
fn test_get_set_thp_disable() {
let original = prctl::get_thp_disable().unwrap();
prctl::set_thp_disable(true).unwrap();
let thp_disable = prctl::get_thp_disable().unwrap();
assert!(thp_disable);
prctl::set_thp_disable(original).unwrap();
}
// Ignore this test under QEMU, as it started failing after updating the Linux CI
// runner image, for reasons unknown.
//
#[test]
#[cfg_attr(qemu, ignore)]
fn test_set_vma_anon_name() {
use nix::errno::Errno;
use nix::sys::mman;
use std::num::NonZeroUsize;
const ONE_K: libc::size_t = 1024;
let sz = NonZeroUsize::new(ONE_K).unwrap();
let ptr = unsafe {
mman::mmap_anonymous(
None,
sz,
mman::ProtFlags::PROT_READ,
mman::MapFlags::MAP_SHARED,
)
.unwrap()
};
let err = prctl::set_vma_anon_name(
ptr,
sz,
Some(CStr::from_bytes_with_nul(b"[,$\0").unwrap()),
)
.unwrap_err();
assert_eq!(err, Errno::EINVAL);
// `CONFIG_ANON_VMA_NAME` kernel config might not be set
prctl::set_vma_anon_name(
ptr,
sz,
Some(CStr::from_bytes_with_nul(b"Nix\0").unwrap()),
)
.unwrap_or_default();
prctl::set_vma_anon_name(ptr, sz, None).unwrap_or_default();
}
}