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33 * This include file contains function prototypes and type definitions used
34 * within the audit implementation.
37 #ifndef _SECURITY_AUDIT_PRIVATE_H_
38 #define _SECURITY_AUDIT_PRIVATE_H_
41 #error "no user-serviceable parts inside"
45 #include <sys/socket.h>
46 #include <sys/ucred.h>
49 MALLOC_DECLARE(M_AUDITBSM);
50 MALLOC_DECLARE(M_AUDITDATA);
51 MALLOC_DECLARE(M_AUDITPATH);
52 MALLOC_DECLARE(M_AUDITTEXT);
53 MALLOC_DECLARE(M_AUDITGIDSET);
57 * Audit control variables that are usually set/read via system calls and
58 * used to control various aspects of auditing.
60 extern struct au_qctrl audit_qctrl;
61 extern struct audit_fstat audit_fstat;
62 extern struct au_mask audit_nae_mask;
63 extern int audit_panic_on_write_fail;
64 extern int audit_fail_stop;
65 extern int audit_argv;
66 extern int audit_arge;
69 * Success/failure conditions for the conversion of a kernel audit record to
77 * Defines for the kernel audit record k_ar_commit field. Flags are set to
78 * indicate what sort of record it is, and which preselection mechanism
81 #define AR_COMMIT_KERNEL 0x00000001U
82 #define AR_COMMIT_USER 0x00000010U
84 #define AR_PRESELECT_TRAIL 0x00001000U
85 #define AR_PRESELECT_PIPE 0x00002000U
87 #define AR_PRESELECT_USER_TRAIL 0x00004000U
88 #define AR_PRESELECT_USER_PIPE 0x00008000U
91 * Audit data is generated as a stream of struct audit_record structures,
92 * linked by struct kaudit_record, and contain storage for possible audit so
93 * that it will not need to be allocated during the processing of a system
94 * call, both improving efficiency and avoiding sleeping at untimely moments.
95 * This structure is converted to BSM format before being written to disk.
97 struct vnode_au_info {
112 struct socket_au_info {
116 in_addr_t so_raddr; /* Remote address if INET socket. */
117 in_addr_t so_laddr; /* Local address if INET socket. */
118 u_short so_rport; /* Remote port. */
119 u_short so_lport; /* Local port. */
123 * The following is used for A_OLDSETQCTRL and AU_OLDGETQCTRL and a 64-bit
127 u_int64_t aq64_hiwater;
128 u_int64_t aq64_lowater;
129 u_int64_t aq64_bufsz;
130 u_int64_t aq64_delay;
131 u_int64_t aq64_minfree;
133 typedef struct au_qctrl64 au_qctrl64_t;
135 union auditon_udata {
143 au_evclass_map_t au_evclass;
145 auditinfo_t au_auinfo;
146 auditpinfo_t au_aupinfo;
147 auditpinfo_addr_t au_aupinfo_addr;
149 au_qctrl64_t au_qctrl64;
152 auditinfo_addr_t au_kau_info;
155 struct posix_ipc_perm {
161 struct audit_record {
162 /* Audit record header. */
165 int ar_retval; /* value returned to the process */
166 int ar_errno; /* return status of system call */
167 struct timespec ar_starttime;
168 struct timespec ar_endtime;
169 u_int64_t ar_valid_arg; /* Bitmask of valid arguments */
171 /* Audit subject information. */
172 struct xucred ar_subj_cred;
176 uid_t ar_subj_auid; /* Audit user ID */
177 pid_t ar_subj_asid; /* Audit session ID */
179 struct au_tid ar_subj_term;
180 struct au_tid_addr ar_subj_term_addr;
181 struct au_mask ar_subj_amask;
183 /* Operation arguments. */
192 struct au_tid ar_arg_termid;
193 struct au_tid_addr ar_arg_termid_addr;
197 struct groupset ar_arg_groups;
209 char ar_arg_login[MAXLOGNAME];
210 int ar_arg_ctlname[CTL_MAXNAME];
211 struct socket_au_info ar_arg_sockinfo;
215 struct au_mask ar_arg_amask;
216 struct vnode_au_info ar_arg_vnode1;
217 struct vnode_au_info ar_arg_vnode2;
219 int ar_arg_svipc_cmd;
220 struct ipc_perm ar_arg_svipc_perm;
222 void * ar_arg_svipc_addr;
223 struct posix_ipc_perm ar_arg_pipc_perm;
224 union auditon_udata ar_arg_auditon;
229 int ar_arg_exitstatus;
230 int ar_arg_exitretval;
231 struct sockaddr_storage ar_arg_sockaddr;
232 cap_rights_t ar_arg_rights;
236 * Arguments in the audit record are initially not defined; flags are set to
237 * indicate if they are present so they can be included in the audit log
238 * stream only if defined.
240 #define ARG_EUID 0x0000000000000001ULL
241 #define ARG_RUID 0x0000000000000002ULL
242 #define ARG_SUID 0x0000000000000004ULL
243 #define ARG_EGID 0x0000000000000008ULL
244 #define ARG_RGID 0x0000000000000010ULL
245 #define ARG_SGID 0x0000000000000020ULL
246 #define ARG_PID 0x0000000000000040ULL
247 #define ARG_UID 0x0000000000000080ULL
248 #define ARG_AUID 0x0000000000000100ULL
249 #define ARG_GID 0x0000000000000200ULL
250 #define ARG_FD 0x0000000000000400ULL
251 #define ARG_POSIX_IPC_PERM 0x0000000000000800ULL
252 #define ARG_FFLAGS 0x0000000000001000ULL
253 #define ARG_MODE 0x0000000000002000ULL
254 #define ARG_DEV 0x0000000000004000ULL
255 #define ARG_ADDR 0x0000000000008000ULL
256 #define ARG_LEN 0x0000000000010000ULL
257 #define ARG_MASK 0x0000000000020000ULL
258 #define ARG_SIGNUM 0x0000000000040000ULL
259 #define ARG_LOGIN 0x0000000000080000ULL
260 #define ARG_SADDRINET 0x0000000000100000ULL
261 #define ARG_SADDRINET6 0x0000000000200000ULL
262 #define ARG_SADDRUNIX 0x0000000000400000ULL
263 #define ARG_TERMID_ADDR 0x0000000000400000ULL
264 #define ARG_UNUSED2 0x0000000001000000ULL
265 #define ARG_UPATH1 0x0000000002000000ULL
266 #define ARG_UPATH2 0x0000000004000000ULL
267 #define ARG_TEXT 0x0000000008000000ULL
268 #define ARG_VNODE1 0x0000000010000000ULL
269 #define ARG_VNODE2 0x0000000020000000ULL
270 #define ARG_SVIPC_CMD 0x0000000040000000ULL
271 #define ARG_SVIPC_PERM 0x0000000080000000ULL
272 #define ARG_SVIPC_ID 0x0000000100000000ULL
273 #define ARG_SVIPC_ADDR 0x0000000200000000ULL
274 #define ARG_GROUPSET 0x0000000400000000ULL
275 #define ARG_CMD 0x0000000800000000ULL
276 #define ARG_SOCKINFO 0x0000001000000000ULL
277 #define ARG_ASID 0x0000002000000000ULL
278 #define ARG_TERMID 0x0000004000000000ULL
279 #define ARG_AUDITON 0x0000008000000000ULL
280 #define ARG_VALUE 0x0000010000000000ULL
281 #define ARG_AMASK 0x0000020000000000ULL
282 #define ARG_CTLNAME 0x0000040000000000ULL
283 #define ARG_PROCESS 0x0000080000000000ULL
284 #define ARG_MACHPORT1 0x0000100000000000ULL
285 #define ARG_MACHPORT2 0x0000200000000000ULL
286 #define ARG_EXIT 0x0000400000000000ULL
287 #define ARG_IOVECSTR 0x0000800000000000ULL
288 #define ARG_ARGV 0x0001000000000000ULL
289 #define ARG_ENVV 0x0002000000000000ULL
290 #define ARG_ATFD1 0x0004000000000000ULL
291 #define ARG_ATFD2 0x0008000000000000ULL
292 #define ARG_RIGHTS 0x0010000000000000ULL
293 #define ARG_NONE 0x0000000000000000ULL
294 #define ARG_ALL 0xFFFFFFFFFFFFFFFFULL
296 #define ARG_IS_VALID(kar, arg) ((kar)->k_ar.ar_valid_arg & (arg))
297 #define ARG_SET_VALID(kar, arg) do { \
298 (kar)->k_ar.ar_valid_arg |= (arg); \
300 #define ARG_CLEAR_VALID(kar, arg) do { \
301 (kar)->k_ar.ar_valid_arg &= ~(arg); \
305 * In-kernel version of audit record; the basic record plus queue meta-data.
306 * This record can also have a pointer set to some opaque data that will be
307 * passed through to the audit writing mechanism.
309 struct kaudit_record {
310 struct audit_record k_ar;
311 u_int32_t k_ar_commit;
312 void *k_udata; /* User data. */
313 u_int k_ulen; /* User data length. */
314 struct uthread *k_uthread; /* Audited thread. */
315 TAILQ_ENTRY(kaudit_record) k_q;
317 TAILQ_HEAD(kaudit_queue, kaudit_record);
320 * Functions to manage the allocation, release, and commit of kernel audit
323 void audit_abort(struct kaudit_record *ar);
324 void audit_commit(struct kaudit_record *ar, int error,
326 struct kaudit_record *audit_new(int event, struct thread *td);
329 * Functions relating to the conversion of internal kernel audit records to
330 * the BSM file format.
333 int kaudit_to_bsm(struct kaudit_record *kar, struct au_record **pau);
334 int bsm_rec_verify(void *rec);
337 * Kernel versions of the libbsm audit record functions.
339 void kau_free(struct au_record *rec);
343 * Return values for pre-selection and post-selection decisions.
345 #define AU_PRS_SUCCESS 1
346 #define AU_PRS_FAILURE 2
347 #define AU_PRS_BOTH (AU_PRS_SUCCESS|AU_PRS_FAILURE)
350 * Data structures relating to the kernel audit queue. Ideally, these might
351 * be abstracted so that only accessor methods are exposed.
353 extern struct mtx audit_mtx;
354 extern struct cv audit_watermark_cv;
355 extern struct cv audit_worker_cv;
356 extern struct kaudit_queue audit_q;
357 extern int audit_q_len;
358 extern int audit_pre_q_len;
359 extern int audit_in_failure;
362 * Flags to use on audit files when opening and closing.
364 #define AUDIT_OPEN_FLAGS (FWRITE | O_APPEND)
365 #define AUDIT_CLOSE_FLAGS (FWRITE | O_APPEND)
367 #include <sys/fcntl.h>
368 #include <sys/kernel.h>
369 #include <sys/malloc.h>
372 * Some of the BSM tokenizer functions take different parameters in the
373 * kernel implementations in order to save the copying of large kernel data
374 * structures. The prototypes of these functions are declared here.
376 token_t *kau_to_socket(struct socket_au_info *soi);
379 * audit_klib prototypes
381 int au_preselect(au_event_t event, au_class_t class,
382 au_mask_t *mask_p, int sorf);
383 void au_evclassmap_init(void);
384 void au_evclassmap_insert(au_event_t event, au_class_t class);
385 au_class_t au_event_class(au_event_t event);
386 au_event_t audit_ctlname_to_sysctlevent(int name[], uint64_t valid_arg);
387 au_event_t audit_flags_and_error_to_openevent(int oflags, int error);
388 au_event_t audit_flags_and_error_to_openatevent(int oflags, int error);
389 au_event_t audit_msgctl_to_event(int cmd);
390 au_event_t audit_semctl_to_event(int cmr);
391 void audit_canon_path(struct thread *td, int dirfd, char *path,
393 au_event_t auditon_command_event(int cmd);
396 * Audit trigger events notify user space of kernel audit conditions
399 void audit_trigger_init(void);
400 int audit_send_trigger(unsigned int trigger);
403 * Accessor functions to manage global audit state.
405 void audit_set_kinfo(struct auditinfo_addr *);
406 void audit_get_kinfo(struct auditinfo_addr *);
409 * General audit related functions.
411 struct kaudit_record *currecord(void);
412 void audit_free(struct kaudit_record *ar);
413 void audit_shutdown(void *arg, int howto);
414 void audit_rotate_vnode(struct ucred *cred,
416 void audit_worker_init(void);
419 * Audit pipe functions.
421 int audit_pipe_preselect(au_id_t auid, au_event_t event,
422 au_class_t class, int sorf, int trail_select);
423 void audit_pipe_submit(au_id_t auid, au_event_t event, au_class_t class,
424 int sorf, int trail_select, void *record, u_int record_len);
425 void audit_pipe_submit_user(void *record, u_int record_len);
427 #endif /* ! _SECURITY_AUDIT_PRIVATE_H_ */