GETAUID(2) System Calls GETAUID(2)


NAME


getauid, setauid - get or set user audit identity

SYNOPSIS


cc [ flag ... ] file ... -lbsm -lsocket -lnsl [ library ... ]
#include <sys/param.h>
#include <bsm/libbsm.h>

int getauid(au_id_t *auid);


int setauid(au_id_t *auid);


DESCRIPTION


The getauid() function returns the audit user ID for the current process.
This value is initially set at login time and inherited by all child
processes. This value does not change when the real/effective user IDs
change, so it can be used to identify the logged-in user even when
running a setuid program. The audit user ID governs audit decisions for a
process.


The setauid() function sets the audit user ID for the current process.

RETURN VALUES


Upon successful completion, the getauid() function returns the audit user
ID of the current process on success. Otherwise, it returns -1 and sets
errno to indicate the error.


Upon successful completion the setauid() function returns 0. Otherwise,
-1 is returned and errno is set to indicate the error.

ERRORS


The getauid() and setauid() functions will fail if:

EFAULT
The auid argument points to an invalid address.


EPERM
The {PRIV_SYS_AUDIT} privilege is not asserted in the effective
set of the calling process.


The getauid() function will fail if:

EPERM
The {PRIV_PROC_AUDIT} privilege is not asserted in the effective
set of the calling process.


USAGE


Only a process with appropriate privileges can successfully execute these
calls.

SEE ALSO


audit(2), getaudit(2), privileges(5)

NOTES


These functions have been superseded by getaudit(2) and setaudit().


March 6, 2017 GETAUID(2)