howto get uid from kernel?

lqu · 08-31-2009, 01:11 PM

Hi all,

I'm compiling a kernel module using 2.6.30.5 (downloaded from kernel.org). I wanted to get the current process' uid and euid thru current-> uid and current->euid. But I got the error: ‘struct task_struct’ has no member named ‘uid’.

I checked SOURCE/inlucde/linux/sched.h, uid and euid are not in struct task_struct any more. How can I access them in version 2.6.30.5?

thanks in advance,
lqu

neonsignal · 09-01-2009, 01:01 AM

The process credentials ('uid' and so on) have been moved into a credentials structure 'cred'. There is a pointer to the credentials (and real credentials) in the task_struct. The structure is defined in sys/cred.h. There were also some macros defined to hide some of the implementation details.