musl - musl - an implementation of the standard library for Linux-based systems

musl - an implementation of the standard library for Linux-based systems

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author	Rich Felker <dalias@aerifal.cx>	2012年08月26日 21:09:26 -0400
committer	Rich Felker <dalias@aerifal.cx>	2012年08月26日 21:09:26 -0400
commit	f419bcb9dcfb6af60fbf1d58d92caf4b3d62a4da (patch)
tree	f9b1fc4c34d59ee892504c7259100e94140d3e98 /include/dlfcn.h
parent	9bff7c133e73ecfb200614d7a7d386a164a1a61f (diff)
download	musl-f419bcb9dcfb6af60fbf1d58d92caf4b3d62a4da.tar.gz

dladdr support for dynamic linker (nonstandard extension)

based on patches submitted by boris brezillon. this commit also fixes the issue whereby the main application and libc don't have the address ranges of their mappings stored, which was theoretically a problem for RTLD_NEXT support in dlsym; it didn't actually matter because libc never calls dlsym, and it seemed to be doing the right thing (by chance) for symbols in the main program as well.

Diffstat (limited to 'include/dlfcn.h')

-rw-r--r--

include/dlfcn.h

1 files changed, 10 insertions, 0 deletions

diff --git a/include/dlfcn.h b/include/dlfcn.h
index dea74c7d..e98c8ca6 100644
--- a/include/dlfcn.h
+++ b/include/dlfcn.h

@@ -18,6 +18,16 @@ char *dlerror(void);

void *dlopen(const char *, int);

void *dlsym(void *, const char *);

+#ifdef _GNU_SOURCE

+typedef struct {

+ const char *dli_fname;

+ void *dli_fbase;

+ const char *dli_sname;

+ void *dli_saddr;

+} Dl_info;

+int dladdr(void *, Dl_info *);

+#endif

#ifdef __cplusplus

}

#endif

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