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      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:
     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