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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);
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.
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.
The getauid() and setauid() functions will fail if: EFAULT
The auid argument points to an invalid address.
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.
Only a process with appropriate privileges can successfully execute these calls.
audit(2), getaudit(2), privileges(5)
These functions have been superseded by getaudit(2) and setaudit().