Find user who launched NSRunningApplication

Question

How can I retrieve this info? Given a NSRunningApplication instance, I need to know who launched it. Activity Monitor shows this info.

Answer 1

If you just need the name of the user who launched an instance of NSRunningApplication, here's a category method that should do it:

#import <libproc.h>
#import <pwd.h>

@implementation NSRunningApplication (UserName)

- (NSString *)foo_userName {
    pid_t pid = [self processIdentifier];
    struct proc_bsdshortinfo info;
    proc_pidinfo(pid, PROC_PIDT_SHORTBSDINFO, 0, &info, sizeof(info));
    struct passwd *passwd = getpwuid(info.pbsi_uid);
    return [NSString stringWithUTF8String:passwd->pw_name];
}

@end