68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
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/* dlfcn.h
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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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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#include <limits.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* declarations used for dynamic linking support routines */
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extern void *dlopen (const char *, int);
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extern void *dlsym (void *, const char *);
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extern int dlclose (void *);
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extern char *dlerror (void);
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/* specific to CYGWIN */
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#define FORK_RELOAD 1
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#define FORK_NO_RELOAD 0
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extern void dlfork (int);
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/* following doesn't exist in Win32 API .... */
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#define RTLD_DEFAULT NULL
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/* valid values for mode argument to dlopen */
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#define RTLD_LOCAL 0 /* Symbols in this dlopen'ed obj are not */
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/* visible to other dlopen'ed objs. */
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#define RTLD_LAZY 1 /* Lazy function call binding. */
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#define RTLD_NOW 2 /* Immediate function call binding. */
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#define RTLD_GLOBAL 4 /* Symbols in this dlopen'ed obj are visible */
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/* to other dlopen'ed objs. */
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/* Non-standard GLIBC extensions */
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#define RTLD_NODELETE 8 /* Don't unload lib in dlcose. */
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#define RTLD_NOLOAD 16 /* Don't load lib, just return handle if lib */
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/* is already loaded, NULL otherwise. */
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#define RTLD_DEEPBIND 32 /* Place lookup scope so that this lib is */
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/* preferred over global scope. */
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#if __GNU_VISIBLE
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typedef struct Dl_info Dl_info;
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struct Dl_info
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{
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char dli_fname[PATH_MAX]; /* Filename of defining object */
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void *dli_fbase; /* Load address of that object */
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const char *dli_sname; /* Name of nearest lower symbol */
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void *dli_saddr; /* Exact value of nearest symbol */
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};
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extern int dladdr (const void *addr, Dl_info *info);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _DLFCN_H */
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