pub fn getsid(pid: i32) -> Result<pid_t, Errno>Expand description
getsid() returns the session ID of the process with process ID pid.
If pid is 0, getsid() returns the session ID of the calling process.
§Error
- Errno::EPERM A process with process ID pid exists, but it is not in the same session as the calling process, and the implementation considers this an error.
- Errno::ESRCH No process with process ID pid was found.
§Platform
This function only support standard POSIX implementation platform, so some system such as redox doesn’t supported.