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2ef9079ece
This tests that with RTLD_DEEPBIND, symbols are looked up in all of the object's needed objects before the global object. PR: 275393 Reviewed by: kib Sponsored by: NetApp, Inc. Sponsored by: Klara, Inc. (cherry picked from commit d9c543b6b0cabea6e6679d70b4e701018e7eab80)
65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
/*-
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*
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* Copyright (C) 2023 NetApp, Inc.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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*/
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#include <dlfcn.h>
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#include <atf-c.h>
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int get_value(void);
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void set_value(int);
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#define APP_VALUE 5
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#define LIB_VALUE 20
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ATF_TC_WITHOUT_HEAD(deepbind_simple);
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ATF_TC_BODY(deepbind_simple, tc)
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{
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void *hdl;
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void (*proxy_set_value)(int);
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int (*proxy_get_value)(void);
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int app_value, lib_value;
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set_value(APP_VALUE);
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/*
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* libdeep has a dependency on libval2.so, which is a rebuild of
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* libval.so that provides get_value() and set_value() for both us and
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* the lib. The lib's get_value() and set_value() should bind to the
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* versions in libval2 instead of libval with RTLD_DEEPBIND.
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*/
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hdl = dlopen("$ORIGIN/libdeep.so", RTLD_LAZY | RTLD_DEEPBIND);
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ATF_REQUIRE(hdl != NULL);
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proxy_set_value = dlsym(hdl, "proxy_set_value");
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ATF_REQUIRE(proxy_set_value != NULL);
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proxy_get_value = dlsym(hdl, "proxy_get_value");
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ATF_REQUIRE(proxy_get_value != NULL);
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(*proxy_set_value)(LIB_VALUE);
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lib_value = (*proxy_get_value)();
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app_value = get_value();
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/*
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* In the initial implementation or if libdeep.so is *not* linked
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* against its own libval2, then these both return the later set
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* LIB_VALUE (20) as they bind to the symbol provided by libval and
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* use its .bss val.
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*/
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ATF_REQUIRE_INTEQ(lib_value, LIB_VALUE);
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ATF_REQUIRE_INTEQ(app_value, APP_VALUE);
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, deepbind_simple);
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return atf_no_error();
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}
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