Function libc::posix_spawnp

pub unsafe extern "C" fn posix_spawnp(
    pid: *mut pid_t,
    file: *const c_char,
    file_actions: *const posix_spawn_file_actions_t,
    attrp: *const posix_spawnattr_t,
    argv: *const *mut c_char,
    envp: *const *mut c_char
) -> c_int