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c5796f1572
dlopen_basic just tests that libthr.so can be dlopen()ed, which will
just serve as a sanity check that "libthr.so" is a thing that can be
dlopened in case we get a weird failure in dlopen_recursing.
dlopen_recursing tests a regression reported after the libsys split,
where some dlopen() may cause infinite recursion and a resulting crash.
This case is inspired by bdrewery's description of what seemed to be
causing his issue.
The corresponding fix landed in commit
968a18975a ("rtld: ignore load_filtees() calls if we already [...]")
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D43859
53 lines
873 B
C
53 lines
873 B
C
/*-
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*
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* Copyright (C) 2024 Kyle Evans <kevans@FreeBSD.org>
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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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ATF_TC_WITHOUT_HEAD(dlopen_basic);
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ATF_TC_BODY(dlopen_basic, tc)
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{
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void *hdl, *sym;
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hdl = dlopen("libthr.so", RTLD_NOW);
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ATF_REQUIRE(hdl != NULL);
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sym = dlsym(hdl, "pthread_create");
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ATF_REQUIRE(sym != NULL);
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dlclose(hdl);
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sym = dlsym(hdl, "pthread_create");
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ATF_REQUIRE(sym == NULL);
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}
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ATF_TC_WITHOUT_HEAD(dlopen_recursing);
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ATF_TC_BODY(dlopen_recursing, tc)
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{
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void *hdl;
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/*
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* If this doesn't crash, we're OK; a regression at one point caused
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* some infinite recursion here.
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*/
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hdl = dlopen("libthr.so", RTLD_NOW | RTLD_GLOBAL);
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ATF_REQUIRE(hdl != NULL);
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dlclose(hdl);
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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, dlopen_basic);
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ATF_TP_ADD_TC(tp, dlopen_recursing);
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return atf_no_error();
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}
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