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(7)

NOTES

These functions have been superseded by getaudit(2) and setaudit().

March 6, 2017 GETAUID(2)