Copyright (c) 2017 Peter Tribble
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cc [ flag... ] file... -lbsm -lsocket -lnsl [ library... ] #include <sys/param.h> #include <bsm/libbsm.h> int auditon(int cmd, caddr_t data, int length);
The auditon() function performs various audit subsystem control operations. The cmd argument designates the particular audit control command. The data argument is a pointer to command-specific data. The length argument is the length in bytes of the command-specific data.
The following commands are supported: A_GETCOND
Return the system audit condition in the integer pointed to by data. The following values can be returned: AUC_AUDITING
Audit daemon is active.
Audit is ready but auditd has not run.
Audit daemon is not active.
Auditing has blocked due to lack of space in audit partition.
Set the system's audit on/off condition to the value in the integer pointed to by data. The following audit states can be set: AUC_AUDITING
Turns on audit record generation.
Turns off audit record generation.
Return the event to class mapping for the designated audit event. The data argument points to the au_evclass_map structure containing the event number. The preselection class mask is returned in the same structure.
Set the event class preselection mask for the designated audit event. The data argument points to the au_evclass_map structure containing the event number and class mask.
Return the kernel preselection mask in the au_mask structure pointed to by data. This is the mask used to preselect non-attributable audit events.
Set the kernel preselection mask. The data argument points to the au_mask structure containing the class mask. This is the mask used to preselect non-attributable audit events.
Return the audit ID, preselection mask, terminal ID and audit session ID of the specified process in the auditpinfo structure pointed to by data. Note that A_GETPINFO can fail if the terminal ID contains a network address longer than 32 bits. In this case, the A_GETPINFO_ADDR command should be used.
Returns the audit ID, preselection mask, terminal ID and audit session ID of the specified process in the auditpinfo_addr structure pointed to by data.
Set the preselection mask of the specified process. The data argument points to the auditpinfo structure containing the process ID and the preselection mask. The other fields of the structure are ignored and should be set to NULL.
Set the preselection mask for all processes with the specified audit ID. The data argument points to the auditinfo structure containing the audit ID and the preselection mask. The other fields of the structure are ignored and should be set to NULL.
Set the preselection mask for all processes with the specified audit session ID. The data argument points to the auditinfo structure containing the audit session ID and the preselection mask. The other fields of the structure are ignored and should be set to NULL.
Return the kernel audit queue control parameters. These control the high and low water marks of the number of audit records allowed in the audit queue. The high water mark is the maximum allowed number of undelivered audit records. The low water mark determines when threads blocked on the queue are wakened. Another parameter controls the size of the data buffer used to write data to the audit trail. There is also a parameter that specifies a maximum delay before data is attempted to be written to the audit trail. The audit queue parameters are returned in the au_qctrl structure pointed to by data.
Set the kernel audit queue control parameters as described above in the A_GETQCTRL command. The data argument points to the au_qctrl structure containing the audit queue control parameters. The default and maximum values 'A/B' for the audit queue control parameters are: high water
100/10000 (audit records)
10/1024 (audit records)
1024/1048576 (bytes)
20/20000 (hundredths second)
Return the current working directory as kept by the audit subsystem. This is a path anchored on the real root, rather than on the active root. The data argument points to a buffer into which the path is copied. The length argument is the length of the buffer.
Return the current active root as kept by the audit subsystem. This path can be used to anchor an absolute path for a path token generated by an application. The data argument points to a buffer into which the path is copied. The length argument is the length of the buffer.
Return the system audit statistics in the audit_stat structure pointed to by data.
Reset system audit statistics values. The kernel statistics value is reset if the corresponding field in the statistics structure pointed to by the data argument is CLEAR_VAL. Otherwise, the value is not changed.
Return the audit policy flags in the integer pointed to by data.
Set the audit policy flags to the values in the integer pointed to by data. The following policy flags are recognized: AUDIT_CNT
Do not suspend processes when audit storage is full or inaccessible. The default action is to suspend processes until storage becomes available.
Halt the machine when a non-attributable audit record can not be delivered. The default action is to count the number of events that could not be recorded.
Include in the audit record the argument list for a member of the exec(2) family of functions. The default action is not to include this information.
Include the environment variables for the execv(2) function in the audit record. The default action is not to include this information.
Add a sequence token to each audit record. The default action is not to include it.
Append a trailer token to each audit record. The default action is not to include it.
Include the supplementary groups list in audit records. The default action is not to include it.
Include secondary paths in audit records. Examples of secondary paths are dynamically loaded shared library modules and the command shell path for executable scripts. The default action is to include only the primary path from the system call.
Include in an audit record any downgraded data moved between windows. This policy is available only if the system is configured with Trusted Extensions. By default, this information is not included.
Include in an audit record any upgraded data moved between windows. This policy is available only if the system is configured with Trusted Extensions. By default, this information is not included.
Enable auditing for each local zone. If not set, audit records from all zones are collected in a single log accessible in the global zone and certain auditconfig(1M) operations are disallowed. This policy can be set only from the global zone.
Generate a zone ID token with each audit record.
Upon successful completion, auditon() returns 0. Otherwise, -1 is returned and errno is set to indicate the error.
The auditon() function will fail if: E2BIG
The length field for the command was too small to hold the returned value.
One of the arguments was illegal, Audit has not been installed, or the operation is not valid from a local zone.
The {PRIV_SYS_AUDIT} privilege is not asserted in the effective set of the calling process. Neither the {PRIV_PROC_AUDIT} nor the {PRIV_SYS_AUDIT} privilege is asserted in the effective set of the calling process and the command is one of A_GETCAR, A_GETCLASS, A_GETCOND, A_GETCWD, A_GETPINFO, A_GETPOLICY.
The auditon() function can be invoked only by processes with appropriate privileges.
The use of auditon() to change system audit state is permitted only in the global zone. From any other zone auditon() returns -1 with errno set to EPERM. The following auditon() commands are permitted only in the global zone: A_SETCOND, A_SETCLASS, A_SETKMASK, A_SETQCTRL, A_SETSTAT, A_SETFSIZE, and A_SETPOLICY. All other auditon() commands are valid from any zone.
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE ATTRIBUTE VALUE |
| Interface Stability Committed |
| MT-Level MT-Safe |
auditconfig(1M), auditd(1M), audit(2), exec(2), audit.log(4), attributes(5), privileges(5)
The auditon options that modify or display process-based information are not affected by the "perzone" audit policy. Those that modify system audit data such as the terminal ID and audit queue parameters are valid only in the global zone unless the "perzone" policy is set. The "get" options for system audit data reflect the local zone if "perzone" is set; otherwise they reflects the settings of the global zone.