site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com User-agent: Thunderbird 2.0.0.19 (Windows/20081209) On Jan 12, 2009, at 12:54 , Gary Fung wrote: Tried to retrieve task_info_t by using task_for_pid but the following code does not equate to true task_t task = MACH_PORT_NULL; struct task_basic_info tinf; if(task_for_pid(mach_task_self(), pid, &task) == KERN_SUCCESS) { ... //not reached } mach_task_self returns non null value so that should be ok. But task_for_pid does not return anything for &task. Any ideas? I've iterated through all the pids currently running, same result. Ran it on Leopard. task_for_pid() requires special privileges to execute. Instead of testing for KERN_SUCCESS in the future, I suggest using a variable to test, then you can see exactly what failed (in this case, you will not have privileges to execute it). The easiest way to deal with this (although, probably not the best way) is to execute the application as root. You can see the man page for taskgated(8) for more information on task_for_pid() and its security issues. Jason _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... This email sent to site_archiver@lists.apple.com