getauid(2)
NAME
getauid, setauid − get and set user audit identity
SYNOPSIS
cc [ flag ... ] file ... −lbsm −lsocket −lnsl −lintl [ library ... ]
#include <sys/param.h>
#include <bsm/audit.h>
int getauid( au_id_t ∗auid);
int setauid( au_id_t ∗auid);
AVAILABILITY
The functionality described in this man page is available only if the Basic Security Module (BSM) has been enabled. See bsmconv(1M) for more information.
DESCRIPTION
The getauid() system call 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() system call sets the audit user ID for the current process.
Only the super-user may successfully execute these calls.
RETURN VALUES
getauid() returns the audit user ID of the current process on success. On failure, it returns −1 and sets errno to indicate the error.
setauid() returns:
0 on success.
−1 on failure and sets errno to indicate the error.
ERRORS
EINVAL The parameter auid is not a valid UID.
EPERM The process’s effective user ID is not super-user.
SEE ALSO
NOTES
These system calls have been superseded by getaudit() and setaudit().
Sun Microsystems — Last change: 6 May 1993