Add DSO_global_lookup_func implementation. See commentary in dso_lib.c

[openssl.git] / crypto / dso / dso_dlfcn.c

diff --git a/crypto/dso/dso_dlfcn.c b/crypto/dso/dso_dlfcn.c
index 6d6ee758ef2197589b8afb4d803976955f0714e0..a4ab38f850cb04ad09a19adb0c4b047614a87765 100644 (file)
--- a/crypto/dso/dso_dlfcn.c
+++ b/crypto/dso/dso_dlfcn.c
@@ -99,6 +99,7 @@ static char *dlfcn_name_converter(DSO *dso, const char *filename);
 static char *dlfcn_merger(DSO *dso, const char *filespec1,
        const char *filespec2);
 static int dlfcn_pathbyaddr(void *addr,char *path,int sz);
+static DSO_FUNC_TYPE dlfcn_globallookup(const char *name);
 
 static DSO_METHOD dso_meth_dlfcn = {
        "OpenSSL 'dlfcn' shared library method",
@@ -116,7 +117,8 @@ static DSO_METHOD dso_meth_dlfcn = {
        dlfcn_merger,
        NULL, /* init */
        NULL, /* finish */
-       dlfcn_pathbyaddr
+       dlfcn_pathbyaddr,
+       dlfcn_globallookup
        };
 
 DSO_METHOD *DSO_METHOD_dlfcn(void)
@@ -443,4 +445,18 @@ static int dlfcn_pathbyaddr(void *addr,char *path,int sz)
        ERR_add_error_data(4, "dlfcn_pathbyaddr(): ", dlerror());
        return -1;
        }
+
+static DSO_FUNC_TYPE dlfcn_globallookup(const char *name)
+       {
+       union { void *p; DSO_FUNC_TYPE f; } ret = { NULL };
+       void *handle = dlopen(NULL,RTLD_LAZY);
+       
+       if (handle)
+               {
+               ret.p = dlsym(handle,name);
+               dlclose(handle);
+               }
+
+       return ret.f;
+       }
 #endif /* DSO_DLFCN */