diff options
Diffstat (limited to 'src/app/data_harvester/processes/macos/sysctl_bindings.rs')
| -rw-r--r-- | src/app/data_harvester/processes/macos/sysctl_bindings.rs | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/app/data_harvester/processes/macos/sysctl_bindings.rs b/src/app/data_harvester/processes/macos/sysctl_bindings.rs index e56d79b8..420c6a2e 100644 --- a/src/app/data_harvester/processes/macos/sysctl_bindings.rs +++ b/src/app/data_harvester/processes/macos/sysctl_bindings.rs @@ -264,12 +264,13 @@ pub(crate) struct eproc { /// Obtains the [`kinfo_proc`] given a process PID. /// -/// From [heim](https://github.com/heim-rs/heim/blob/master/heim-process/src/sys/macos/bindings/process.rs#L235). +/// Based on the implementation from [heim](https://github.com/heim-rs/heim/blob/master/heim-process/src/sys/macos/bindings/process.rs#L235). pub(crate) fn kinfo_process(pid: Pid) -> Result<kinfo_proc> { let mut name: [i32; 4] = [CTL_KERN, KERN_PROC, KERN_PROC_PID, pid]; let mut size = mem::size_of::<kinfo_proc>(); let mut info = mem::MaybeUninit::<kinfo_proc>::uninit(); + // SAFETY: libc binding, we assume all arguments are valid. let result = unsafe { libc::sysctl( name.as_mut_ptr(), @@ -290,6 +291,10 @@ pub(crate) fn kinfo_process(pid: Pid) -> Result<kinfo_proc> { bail!("failed to get process for pid {pid}"); } + // SAFETY: info is initialized if result succeeded and returned a non-negative result. If sysctl failed, it returns + // -1 with errno set. + // + // Source: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man3/sysctl.3.html unsafe { Ok(info.assume_init()) } } |