darwin_libproc/
pid_info.rs

1use std::io;
2use std::mem;
3
4fn pid_info<T>(
5    pid: libc::pid_t,
6    flavor: libc::c_int,
7    arg: u64,
8) -> io::Result<T> {
9    let mut info = mem::MaybeUninit::<T>::uninit();
10    let size = mem::size_of::<T>() as libc::c_int;
11
12    let result = unsafe {
13        darwin_libproc_sys::proc_pidinfo(
14            pid,
15            flavor,
16            arg,
17            info.as_mut_ptr() as *mut libc::c_void,
18            size,
19        )
20    };
21
22    match result {
23        value if value <= 0 => Err(io::Error::last_os_error()),
24        value if value != size => Err(io::Error::new(
25            io::ErrorKind::Other,
26            "invalid value returned",
27        )),
28        _ => unsafe { Ok(info.assume_init()) },
29    }
30}
31
32/// Returns filled `proc_taskinfo` struct for `pid` given.
33pub fn task_info(
34    pid: libc::pid_t,
35) -> io::Result<darwin_libproc_sys::proc_taskinfo> {
36    pid_info(pid, darwin_libproc_sys::PROC_PIDTASKINFO, 0)
37}
38
39/// Returns filled `proc_taskallinfo` struct for `pid` given.
40pub fn task_all_info(
41    pid: libc::pid_t,
42) -> io::Result<darwin_libproc_sys::proc_taskallinfo> {
43    pid_info(pid, darwin_libproc_sys::PROC_PIDTASKALLINFO, 0)
44}
45
46/// Returns filled `proc_vnodepathinfo` struct for pid given.
47pub fn vnode_path_info(
48    pid: libc::pid_t,
49) -> io::Result<darwin_libproc_sys::proc_vnodepathinfo> {
50    pid_info(pid, darwin_libproc_sys::PROC_PIDVNODEPATHINFO, 0)
51}
darwin_libproc/pid_info.rs

darwin_libproc/
pid_info.rs
