2 * aulast-llist.h - Header file for aulastlog-llist.c
3 * Copyright (c) 2008 Red Hat Inc., Durham, North Carolina.
6 * This software may be freely redistributed and/or modified under the
7 * terms of the GNU General Public License as published by the Free
8 * Software Foundation; either version 2, or (at your option) any
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; see the file COPYING. If not, write to the
18 * Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 * Steve Grubb <sgrubb@redhat.com>
24 #ifndef AULASTLIST_HEADER
25 #define AULASTLIST_HEADER
27 #include <sys/types.h>
30 typedef enum { LOG_IN, SESSION_START, LOG_OUT, DOWN, CRASH, GONE } status_t;
32 /* This is the node of the linked list. message & item are the only elements
33 * at this time. Any data elements that are per item goes here. */
34 typedef struct _lnode{
35 unsigned int session; // The kernel login session id
36 time_t start; // first time uid logged in
37 time_t end; // last time uid logged in
38 uid_t auid; // user ID
39 int pid; // pid of program logging in
40 const char *name; // user name
41 const char *term; // terminal name
42 const char *host; // host where logging in from
43 int result; // login results
44 status_t status; // Current status of this session
45 unsigned long loginuid_proof; // audit serial number for loginuid change
46 unsigned long user_login_proof; // audit serial number for user login event
47 unsigned long user_end_proof; // audit serial number for user log out event
48 struct _lnode* next; // Next node pointer
51 /* This is the linked list head. Only data elements that are 1 per
54 lnode *head; // List head
55 lnode *cur; // Pointer to current node
58 void list_create(llist *l);
59 static inline void list_first(llist *l) { l->cur = l->head; }
60 lnode *list_next(llist *l);
61 static inline lnode *list_get_cur(llist *l) { return l->cur; }
62 void list_clear(llist* l);
63 int list_create_session(llist* l, uid_t auid, int pid, int session,
64 unsigned long serial);
65 int list_update_start(llist* l, time_t start, const char *host,
66 const char *term, int res, unsigned long serial);
67 int list_update_logout(llist* l, time_t t, unsigned long serial);
68 lnode *list_delete_cur(llist *l);
70 /* Given a uid, find that record. */
71 lnode *list_find_auid(llist *l, uid_t auid, int pid, unsigned int session);
72 lnode *list_find_session(llist *l, unsigned int session);