* Simple test dlopen

* Test dlopen with autotools

Makefile.am

@@ -318,6 +318,13 @@ tss2_HEADERS += $(srcdir)/include/tss2/tss2_tcti_device.h
 lib_LTLIBRARIES += $(libtss2_tcti_device)
 pkgconfig_DATA += lib/tss2-tcti-device.pc
 
+# tcti library for swtpm
+if ENABLE_TCTI_SWTPM
+libtss2_tcti_swtpm = src/tss2-tcti/libtss2-tcti-swtpm.la
+tss2_HEADERS += $(srcdir)/include/tss2/tss2_tcti_swtpm.h
+lib_LTLIBRARIES += $(libtss2_tcti_swtpm)
+pkgconfig_DATA += lib/tss2-tcti-swtpm.pc
+
 if HAVE_LD_VERSION_SCRIPT
 src_tss2_tcti_libtss2_tcti_device_la_LDFLAGS  = -Wl,--version-script=$(srcdir)/lib/tss2-tcti-device.map
 endif # HAVE_LD_VERSION_SCRIPT
@@ -328,12 +335,6 @@ src_tss2_tcti_libtss2_tcti_device_la_SOURCES  = \
 endif # ENABLE_TCTI_DEVICE
 EXTRA_DIST += lib/tss2-tcti-device.map
 
-# tcti library for swtpm
-if ENABLE_TCTI_SWTPM
-libtss2_tcti_swtpm = src/tss2-tcti/libtss2-tcti-swtpm.la
-tss2_HEADERS += $(srcdir)/include/tss2/tss2_tcti_swtpm.h
-lib_LTLIBRARIES += $(libtss2_tcti_swtpm)
-pkgconfig_DATA += lib/tss2-tcti-swtpm.pc
 
 if HAVE_LD_VERSION_SCRIPT
 src_tss2_tcti_libtss2_tcti_swtpm_la_LDFLAGS  = -Wl,--version-script=$(srcdir)/lib/tss2-tcti-swtpm.map

src/tss2-tcti/tcti-libtpms.c

@@ -621,6 +621,7 @@ tcti_libtpms_dl(TSS2_TCTI_LIBTPMS_CONTEXT *tcti_libtpms)
     const char *names[] = {"libtpms.so", "libtpms.so.0"};
 
     for (size_t i = 0; i < ARRAY_LEN(names); i++) {
+        LOG_ERROR("XXX 7 %s", names[i]);
         tcti_libtpms->libtpms = dlopen(names[i], RTLD_LAZY | RTLD_LOCAL);
         if (tcti_libtpms->libtpms != NULL) {
             break;

src/tss2-tcti/tctildr-dl.c

@@ -107,6 +107,7 @@ handle_from_name(const char *file,
             LOG_ERROR("TCTI name truncated in transform.");
             return TSS2_TCTI_RC_BAD_VALUE;
         }
+        LOG_ERROR("XXX 1 %s", file_xfrm);
         *handle = dlopen(file_xfrm, RTLD_NOW);
         if (*handle != NULL) {
             return TSS2_RC_SUCCESS;

test-dlopen/dlopen-autotools/Makefile.am

@@ -0,0 +1,14 @@
+lib_LTLIBRARIES = libmyfu1.la
+libmyfu1_la_SOURCES = myfu1.c
+libmyfu1_la_CFLAGS = -fPIC
+libmyfu1_la_LDFLAGS = -version-info 1:0:0 -rpath /usr/local/lib
+lib_LTLIBRARIES += libmyfu2.la
+libmyfu2_la_SOURCES = myfu2.c
+libmyfu2_la_CFLAGS = -fPIC
+libmyfu2_la_LDFLAGS = -version-info 1:0:0 -rpath /usr/local/lib
+
+main_LDADD = libmyfu1.la libmyfu2.la -ldl
+bin_PROGRAMS = main
+main_SOURCES = main.c
+main_LDADD += libmyfu1.la
+main_LDADD +=  libmyfu2.la

test-dlopen/dlopen-autotools/configure.ac

@@ -0,0 +1,6 @@
+AC_INIT([MyLib], [1.0], [[email protected]])
+AM_INIT_AUTOMAKE
+AC_PROG_CC
+LT_INIT
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT

test-dlopen/dlopen-autotools/main.c

@@ -0,0 +1,23 @@
+#include <stdio.h>
+#include <dlfcn.h>
+
+void myfu() {
+    printf("Hello from main myfu!\n");
+}
+
+
+int main() {
+    void *handle;
+    handle = dlopen("libmyfu2.so", RTLD_NOW);
+    myfu();
+    void (*myfu)() = (void (*)()) dlsym(handle, "myfu");
+    char *error = dlerror();
+    if (error) {
+        fprintf(stderr, "Error finding symbol 'myfu': %s\n", error);
+        dlclose(handle);
+        return 1;
+    }
+    printf("Calling myfu:\n");
+    myfu();
+    return 0;
+}

test-dlopen/dlopen-autotools/myfu.c

@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+// Define the external function
+void myfu() {
+    printf("Hello from so myfu!\n");
+}

test-dlopen/dlopen-autotools/myfu1.c

@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+// Define the external function
+void myfu() {
+    printf("Hello from so1 myfu!\n");
+}

test-dlopen/dlopen-autotools/myfu2.c

@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+// Define the external function
+void myfu() {
+    printf("Hello from so2 myfu!\n");
+}

test-dlopen/dlopen-autotools/run.sh

@@ -0,0 +1,8 @@
+git clean -xdf
+aclocal
+libtoolize
+autoconf
+automake --add-missing
+./configure --disable-dependency-tracking
+gmake -j
+./main

test-dlopen/simple-test/main.c

@@ -0,0 +1,23 @@
+#include <stdio.h>
+#include <dlfcn.h>
+
+void myfu() {
+    printf("Hello from main myfu!\n");
+}
+
+
+int main() {
+    void *handle;
+    handle = dlopen("./libmyfu.so", RTLD_NOW);
+    myfu();
+    void (*myfu)() = (void (*)()) dlsym(handle, "myfu");
+    char *error = dlerror();
+    if (error) {
+        fprintf(stderr, "Error finding symbol 'myfu': %s\n", error);
+        dlclose(handle);
+        return 1;
+    }
+    printf("Calling myfu:\n");
+    myfu();
+    return 0;
+}

test-dlopen/simple-test/make.sh

@@ -0,0 +1,2 @@
+clang -fPIC -shared -o libmyfu.so myfu.c
+clang -o main_program main.c -ldl

test-dlopen/simple-test/myfu.c

@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+// Define the external function
+void myfu() {
+    printf("Hello from so myfu!\n");
+}

tss2-dlopen/tss2-dlopen-fapi.c

@@ -41,7 +41,7 @@ init_dlhandle(void)
 {
     if (dlhandle)
         return TSS2_RC_SUCCESS;
-    dlhandle = dlopen(LIB, RTLD_NOW | RTLD_LOCAL);
+     dlhandle = dlopen(LIB, RTLD_NOW | RTLD_LOCAL);
     if (!dlhandle) {
         WARN("Library " LIB " not found: %s.", dlerror());
         return TSS2_FAPI_RC_NOT_IMPLEMENTED;