testsuite/ltrace.minor/attach-process-dlopen.exp

# This file is part of ltrace.
# Copyright (C) 2012, 2013 Petr Machata, Red Hat Inc.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU 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
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
# 02110-1301 USA

set libll [ltraceCompile libll.so [ltraceSource c {
    #include <unistd.h>
    void sym(void) {
	sleep(1);
    }
}]]

spawn [ltraceCompile exe -ldl [ltraceSource c {
    #include <unistd.h>
    #include <dlfcn.h>
    #include <assert.h>
    #include <stdio.h>
    #include <string.h>
    int main(int argc, char **argv) {
	assert(argc == 2);
    #define FN "libll.so"
	char buf[strlen(argv[1]) + 1 + sizeof FN];
	sprintf(buf, "%s/%s", argv[1], FN);
	void *libll = dlopen(buf, RTLD_LAZY | RTLD_LOCAL);
	assert(libll != NULL);
	sleep(1);
	void (*sym)(void) = dlsym(libll, "sym");
	assert(sym != NULL);
	sym();
	return 0;
    }
}]] $objdir/$subdir

ltraceMatch1 [ltraceRun -e* -p [exp_pid]] {libll.so->sleep} == 1

ltraceDone