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1 /*
2  * Copyright (c) 2012-2015 Dmitry V. Levin <ldv@altlinux.org>
3  * Copyright (c) 2014-2017 The strace developers.
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. The name of the author may not be used to endorse or promote products
15  *    derived from this software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  */
28
29 #include "defs.h"
30
31 enum {
32         SYSLOG_ACTION_CLOSE = 0,
33         SYSLOG_ACTION_OPEN,
34         SYSLOG_ACTION_READ,
35         SYSLOG_ACTION_READ_ALL,
36         SYSLOG_ACTION_READ_CLEAR,
37         SYSLOG_ACTION_CLEAR,
38         SYSLOG_ACTION_CONSOLE_OFF,
39         SYSLOG_ACTION_CONSOLE_ON,
40         SYSLOG_ACTION_CONSOLE_LEVEL,
41         SYSLOG_ACTION_SIZE_UNREAD,
42         SYSLOG_ACTION_SIZE_BUFFER
43 };
44
45 #include "xlat/syslog_action_type.h"
46
47 SYS_FUNC(syslog)
48 {
49         int type = tcp->u_arg[0];
50
51         if (entering(tcp)) {
52                 /* type */
53                 printxval(syslog_action_type, type, "SYSLOG_ACTION_???");
54                 tprints(", ");
55         }
56
57         switch (type) {
58                 case SYSLOG_ACTION_READ:
59                 case SYSLOG_ACTION_READ_ALL:
60                 case SYSLOG_ACTION_READ_CLEAR:
61                         if (entering(tcp))
62                                 return 0;
63                         break;
64                 default:
65                         printaddr(tcp->u_arg[1]);
66                         tprintf(", %" PRI_klu, tcp->u_arg[2]);
67                         return RVAL_DECODED;
68         }
69
70         /* bufp */
71         if (syserror(tcp))
72                 printaddr(tcp->u_arg[1]);
73         else
74                 printstrn(tcp, tcp->u_arg[1], tcp->u_rval);
75         /* len */
76         tprintf(", %d", (int) tcp->u_arg[2]);
77
78         return 0;
79 }