diff options
| -rw-r--r-- | src/sys/ptrace.rs | 17 | ||||
| -rw-r--r-- | test/sys/test_ptrace.rs | 36 |
2 files changed, 43 insertions, 10 deletions
diff --git a/src/sys/ptrace.rs b/src/sys/ptrace.rs index bf395259..73ca9160 100644 --- a/src/sys/ptrace.rs +++ b/src/sys/ptrace.rs @@ -91,18 +91,16 @@ fn ptrace_peek(request: ptrace::PtraceRequest, pid: Pid, addr: *mut c_void, data } } -/// Function for ptrace requests that return values from the data field. +/// Function for ptrace requests that return values from the data field. /// Some ptrace get requests populate structs or larger elements than c_long /// and therefore use the data field to return values. This function handles these /// requests. fn ptrace_get_data<T>(request: ptrace::PtraceRequest, pid: Pid) -> Result<T> { - // Creates an uninitialized pointer to store result in - let data: Box<T> = Box::new(unsafe { mem::uninitialized() }); - let data: *mut c_void = unsafe { mem::transmute(data) }; - ptrace(request, pid, ptr::null_mut(), data)?; - // Convert back into the original data format and return unboxed value - let data: Box<T> = unsafe { mem::transmute(data) }; - Ok(*data) + // Creates an uninitialized pointer to store result in + let data: T = unsafe { mem::uninitialized() }; + let res = unsafe { ffi::ptrace(request, pid.into(), ptr::null_mut(), &data as *const _ as *const c_void) }; + Errno::result(res)?; + Ok(data) } fn ptrace_other(request: ptrace::PtraceRequest, pid: Pid, addr: *mut c_void, data: *mut c_void) -> Result<c_long> { @@ -114,7 +112,8 @@ pub fn ptrace_setoptions(pid: Pid, options: ptrace::PtraceOptions) -> Result<()> use self::ptrace::*; use std::ptr; - ptrace(PTRACE_SETOPTIONS, pid, ptr::null_mut(), options as *mut c_void).map(drop) + let res = unsafe { ffi::ptrace(PTRACE_SETOPTIONS, pid.into(), ptr::null_mut(), options as *mut c_void) }; + Errno::result(res).map(|_| ()) } /// Gets a ptrace event as described by `ptrace(PTRACE_GETEVENTMSG,...)` diff --git a/test/sys/test_ptrace.rs b/test/sys/test_ptrace.rs index 6318495a..57b452cb 100644 --- a/test/sys/test_ptrace.rs +++ b/test/sys/test_ptrace.rs @@ -3,7 +3,8 @@ use nix::errno::*; use nix::unistd::*; use nix::sys::ptrace::*; use nix::sys::ptrace::ptrace::*; -use std::ptr; + +use std::{mem, ptr}; #[test] fn test_ptrace() { @@ -12,3 +13,36 @@ fn test_ptrace() { let err = ptrace(PTRACE_ATTACH, getpid(), ptr::null_mut(), ptr::null_mut()).unwrap_err(); assert!(err == Error::Sys(Errno::EPERM) || err == Error::Sys(Errno::ENOSYS)); } + +// Just make sure ptrace_setoptions can be called at all, for now. +#[test] +fn test_ptrace_setoptions() { + let err = ptrace_setoptions(getpid(), PTRACE_O_TRACESYSGOOD).unwrap_err(); + assert!(err != Error::UnsupportedOperation); +} + +// Just make sure ptrace_getevent can be called at all, for now. +#[test] +fn test_ptrace_getevent() { + let err = ptrace_getevent(getpid()).unwrap_err(); + assert!(err != Error::UnsupportedOperation); +} + +// Just make sure ptrace_getsiginfo can be called at all, for now. +#[test] +fn test_ptrace_getsiginfo() { + match ptrace_getsiginfo(getpid()) { + Err(Error::UnsupportedOperation) => panic!("ptrace_getsiginfo returns Error::UnsupportedOperation!"), + _ => (), + } +} + +// Just make sure ptrace_setsiginfo can be called at all, for now. +#[test] +fn test_ptrace_setsiginfo() { + let siginfo = unsafe { mem::uninitialized() }; + match ptrace_setsiginfo(getpid(), &siginfo) { + Err(Error::UnsupportedOperation) => panic!("ptrace_setsiginfo returns Error::UnsupportedOperation!"), + _ => (), + } +} |