e2a8b1fd19
dladdr() is a GNU extension function, which allows the caller to retrieve symbol information for a specified memory address. It is useful for things like generating backtrace information at runtime. Change-Id: I3a1def1a6c9c666d93e1e97b7d260dfa5b9b79a9
67 lines
2.4 KiB
C
67 lines
2.4 KiB
C
/*
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* Copyright (C) 2008 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef __DLFCN_H__
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#define __DLFCN_H__
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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typedef struct {
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const char *dli_fname; /* Pathname of shared object that
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contains address */
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void *dli_fbase; /* Address at which shared object
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is loaded */
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const char *dli_sname; /* Name of nearest symbol with address
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lower than addr */
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void *dli_saddr; /* Exact address of symbol named
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in dli_sname */
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} Dl_info;
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extern void* dlopen(const char* filename, int flag);
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extern int dlclose(void* handle);
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extern const char* dlerror(void);
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extern void* dlsym(void* handle, const char* symbol);
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extern int dladdr(void* addr, Dl_info *info);
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enum {
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RTLD_NOW = 0,
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RTLD_LAZY = 1,
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RTLD_LOCAL = 0,
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RTLD_GLOBAL = 2,
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};
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#define RTLD_DEFAULT ((void*) 0xffffffff)
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#define RTLD_NEXT ((void*) 0xfffffffe)
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__END_DECLS
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#endif /* __DLFCN_H */
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