1 /*
2  * Copyright (C) 2016 The Android Open Source Project
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *  * Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  *  * Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in
12  *    the documentation and/or other materials provided with the
13  *    distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 
29 #ifndef _LINKER_LOGGER_H_
30 #define _LINKER_LOGGER_H_
31 
32 #include <stdlib.h>
33 #include <limits.h>
34 #include "private/bionic_macros.h"
35 #include "private/bionic_systrace.h"
36 
37 #define LD_LOG(type, x...) \
38   { \
39     g_linker_logger.Log(type, x); \
40   }
41 
42 constexpr const uint32_t kLogErrors = 1 << 0;
43 constexpr const uint32_t kLogDlopen = 1 << 1;
44 constexpr const uint32_t kLogDlsym  = 1 << 2;
45 
46 class LinkerLogger {
47  public:
LinkerLogger()48   LinkerLogger() : flags_(0) { }
49 
50   void ResetState();
51   void Log(uint32_t type, const char* format, ...);
52  private:
53   uint32_t flags_;
54 
55   DISALLOW_COPY_AND_ASSIGN(LinkerLogger);
56 };
57 
58 extern LinkerLogger g_linker_logger;
59 extern char** g_argv;
60 
61 // If the system property debug.ld.greylist_disabled is true, we'll not use the greylist
62 // regardless of API level.
63 extern bool g_greylist_disabled;
64 
65 #endif /* _LINKER_LOGGER_H_ */
66