108 lines
3.5 KiB
Rust
108 lines
3.5 KiB
Rust
use nix::errno::Errno;
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use nix::unistd::*;
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use nix::unistd::ForkResult::*;
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use nix::sys::signal::*;
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use nix::sys::wait::*;
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use libc::_exit;
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#[test]
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#[cfg(not(target_os = "redox"))]
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fn test_wait_signal() {
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let _m = crate::FORK_MTX.lock();
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// Safe: The child only calls `pause` and/or `_exit`, which are async-signal-safe.
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match unsafe{fork()}.expect("Error: Fork Failed") {
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Child => {
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pause();
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unsafe { _exit(123) }
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},
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Parent { child } => {
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kill(child, Some(SIGKILL)).expect("Error: Kill Failed");
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assert_eq!(waitpid(child, None), Ok(WaitStatus::Signaled(child, SIGKILL, false)));
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},
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}
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}
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#[test]
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fn test_wait_exit() {
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let _m = crate::FORK_MTX.lock();
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// Safe: Child only calls `_exit`, which is async-signal-safe.
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match unsafe{fork()}.expect("Error: Fork Failed") {
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Child => unsafe { _exit(12); },
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Parent { child } => {
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assert_eq!(waitpid(child, None), Ok(WaitStatus::Exited(child, 12)));
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},
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}
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}
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#[test]
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fn test_waitstatus_from_raw() {
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let pid = Pid::from_raw(1);
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assert_eq!(WaitStatus::from_raw(pid, 0x0002), Ok(WaitStatus::Signaled(pid, Signal::SIGINT, false)));
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assert_eq!(WaitStatus::from_raw(pid, 0x0200), Ok(WaitStatus::Exited(pid, 2)));
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assert_eq!(WaitStatus::from_raw(pid, 0x7f7f), Err(Errno::EINVAL));
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}
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#[test]
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fn test_waitstatus_pid() {
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let _m = crate::FORK_MTX.lock();
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match unsafe{fork()}.unwrap() {
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Child => unsafe { _exit(0) },
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Parent { child } => {
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let status = waitpid(child, None).unwrap();
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assert_eq!(status.pid(), Some(child));
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}
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}
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}
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#[cfg(any(target_os = "linux", target_os = "android"))]
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// FIXME: qemu-user doesn't implement ptrace on most arches
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#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
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mod ptrace {
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use nix::sys::ptrace::{self, Options, Event};
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use nix::sys::signal::*;
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use nix::sys::wait::*;
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use nix::unistd::*;
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use nix::unistd::ForkResult::*;
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use libc::_exit;
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use crate::*;
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fn ptrace_child() -> ! {
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ptrace::traceme().unwrap();
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// As recommended by ptrace(2), raise SIGTRAP to pause the child
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// until the parent is ready to continue
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raise(SIGTRAP).unwrap();
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unsafe { _exit(0) }
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}
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fn ptrace_parent(child: Pid) {
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// Wait for the raised SIGTRAP
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assert_eq!(waitpid(child, None), Ok(WaitStatus::Stopped(child, SIGTRAP)));
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// We want to test a syscall stop and a PTRACE_EVENT stop
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assert!(ptrace::setoptions(child, Options::PTRACE_O_TRACESYSGOOD | Options::PTRACE_O_TRACEEXIT).is_ok());
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// First, stop on the next system call, which will be exit()
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assert!(ptrace::syscall(child, None).is_ok());
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assert_eq!(waitpid(child, None), Ok(WaitStatus::PtraceSyscall(child)));
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// Then get the ptrace event for the process exiting
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assert!(ptrace::cont(child, None).is_ok());
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assert_eq!(waitpid(child, None), Ok(WaitStatus::PtraceEvent(child, SIGTRAP, Event::PTRACE_EVENT_EXIT as i32)));
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// Finally get the normal wait() result, now that the process has exited
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assert!(ptrace::cont(child, None).is_ok());
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assert_eq!(waitpid(child, None), Ok(WaitStatus::Exited(child, 0)));
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}
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#[test]
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fn test_wait_ptrace() {
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require_capability!("test_wait_ptrace", CAP_SYS_PTRACE);
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let _m = crate::FORK_MTX.lock();
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match unsafe{fork()}.expect("Error: Fork Failed") {
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Child => ptrace_child(),
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Parent { child } => ptrace_parent(child),
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}
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}
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}
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