From 536362633fc9b7615f3cd2c0543e553c3e0f4cdf Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Fri, 27 Jun 2003 11:55:20 +0000 Subject: Add a test which shows off the broken spots in our dlopen implementation --- test/dlopen/Makefile | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ test/dlopen/libtest1.c | 37 +++++++++++++++++++++++++++++++++++++ test/dlopen/libtest2.c | 39 +++++++++++++++++++++++++++++++++++++++ test/dlopen/test1.c | 33 +++++++++++++++++++++++++++++++++ test/dlopen/test2.c | 39 +++++++++++++++++++++++++++++++++++++++ 5 files changed, 197 insertions(+) create mode 100644 test/dlopen/Makefile create mode 100644 test/dlopen/libtest1.c create mode 100644 test/dlopen/libtest2.c create mode 100644 test/dlopen/test1.c create mode 100644 test/dlopen/test2.c (limited to 'test') diff --git a/test/dlopen/Makefile b/test/dlopen/Makefile new file mode 100644 index 000000000..6e22d8bb6 --- /dev/null +++ b/test/dlopen/Makefile @@ -0,0 +1,49 @@ +# Makefile for uClibc +# +# Copyright (C) 2000,2001 Erik Andersen +# +# This program is free software; you can redistribute it and/or modify it under +# the terms of the GNU Library General Public License as published by the Free +# Software Foundation; either version 2 of the License, or (at your option) any +# later version. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS +# FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more +# details. +# +# You should have received a copy of the GNU Library General Public License +# along with this program; if not, write to the Free Software Foundation, Inc., +# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +TESTDIR=../ +include $(TESTDIR)/Rules.mak + +all: run + +test1: test1.c + $(CC) $(CFLAGS) -o test1 test1.c -ldl + +test2: test2.c + $(CC) $(CFLAGS) -o test2 test2.c -ldl + +libtest1.o: libtest1.c + $(CC) $(CFLAGS) -fPIC -c libtest1.c -o libtest1.o + +libtest2.o: libtest2.c + $(CC) $(CFLAGS) -fPIC -c libtest2.c -o libtest2.o + +libtest1.so: libtest1.o + $(CC) $(CFLAGS) -fPIC -shared -o libtest1.so -Wl,-soname,libtest1.so libtest1.o ./libtest2.so + +libtest2.so: libtest2.o + $(CC) $(CFLAGS) -fPIC -shared -o libtest2.so -Wl,-soname,libtest2.so libtest2.o + +run: libtest2.so libtest1.so test1 test2 + @echo "----------running test 1--------------" + -LD_LIBRARY_PATH=`pwd`:. ./test1 + @echo "----------running test 2--------------" + -LD_LIBRARY_PATH=`pwd`:. ./test2 + +clean: + rm -f *.o libtest1.so* libtest2.so* test1 test2 diff --git a/test/dlopen/libtest1.c b/test/dlopen/libtest1.c new file mode 100644 index 000000000..c440d9b4a --- /dev/null +++ b/test/dlopen/libtest1.c @@ -0,0 +1,37 @@ +#include + +extern int libtest2_func(const char *s); + + +void __attribute__((constructor)) libtest1_ctor(void) +{ + printf("I am the libtest1 constructor!\n"); +} + +void __attribute__((destructor)) libtest1_dtor(void) +{ + printf("I am the libtest1 destructor!\n"); +} + +void __attribute__((weak)) function1(void) +{ + printf("libtest1: I am function1 from libtest1!\n"); +} + +void function2(void) +{ + printf("libtest1: I am overriding function2!\n"); +} + + +int dltest(const char *s) +{ + printf( "libtest1: function1 = %p\n" + "libtest1: function2 = %p\n", + function1, function2); + function1(); + function2(); + return(libtest2_func(s)); +} + + diff --git a/test/dlopen/libtest2.c b/test/dlopen/libtest2.c new file mode 100644 index 000000000..448a5d902 --- /dev/null +++ b/test/dlopen/libtest2.c @@ -0,0 +1,39 @@ +#include +#include + + +extern int __pthread_mutex_init (void); + +void __attribute__((constructor)) libtest2_ctor(void) +{ + printf("I am the libtest2 constructor!\n"); +} + +void __attribute__((destructor)) libtest2_dtor(void) +{ + printf("I am the libtest2 destructor!\n"); +} + +void function1(void) +{ + printf("libtest2: I am overriding function1!\n"); +} + +void __attribute__((weak)) function2(void) +{ + printf("libtest2: I am function2 from libtest2!\n"); +} + + +int libtest2_func(const char *s) +{ + function1(); + function2(); + printf( "libtest2: function1 = %p\n" + "libtest2: function2 = %p\n" + "libtest2: message from main() = '%s'\n", + function1, function2, s); + return 0; +} + + diff --git a/test/dlopen/test1.c b/test/dlopen/test1.c new file mode 100644 index 000000000..c13eb3006 --- /dev/null +++ b/test/dlopen/test1.c @@ -0,0 +1,33 @@ +#include +#include +#include +#include + +#ifdef __UCLIBC__ +extern void _dlinfo(void); +#endif + +int main(int argc, char **argv) { + void *handle; + int (*mydltest)(const char *s); + char *error; + + handle = dlopen ("./libtest1.so", RTLD_LAZY); + if (!handle) { + fprintf(stderr, "Could not open ./libtest1.so: %s\n", dlerror()); + exit(1); + } + + mydltest = dlsym(handle, "dltest"); + if ((error = dlerror()) != NULL) { + fprintf(stderr, "Could not locate symbol 'dltest': %s\n", error); + exit(1); + } + + mydltest("hello world!"); + + dlclose(handle); + + return EXIT_SUCCESS; +} + diff --git a/test/dlopen/test2.c b/test/dlopen/test2.c new file mode 100644 index 000000000..d8428f7f9 --- /dev/null +++ b/test/dlopen/test2.c @@ -0,0 +1,39 @@ +#include +#include +#include +#include + +#ifdef __UCLIBC__ +extern void _dlinfo(void); +#endif + +int main(int argc, char **argv) { + void *handle; + int (*mydltest)(const char *s); + char *error; + + handle = dlopen ("./libtest2.so", RTLD_LAZY); + if (!handle) { + fprintf(stderr, "Could not open ./libtest2.so: %s\n", dlerror()); + exit(1); + } + + handle = dlopen ("./libtest1.so", RTLD_LAZY); + if (!handle) { + fprintf(stderr, "Could not open ./libtest1.so: %s\n", dlerror()); + exit(1); + } + + mydltest = dlsym(handle, "dltest"); + if ((error = dlerror()) != NULL) { + fprintf(stderr, "Could not locate symbol 'dltest': %s\n", error); + exit(1); + } + + mydltest("hello world!"); + + dlclose(handle); + + return EXIT_SUCCESS; +} + -- cgit v1.2.3