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elf: Test for LD_AUDIT module returning zero from la_version [BZ #24122]

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This includes the original test case from commit
8e889c5da3 ("elf: Fix LD_AUDIT for
modules with invalid version (BZ#24122)).
This commit is contained in:
Adhemerval Zanella 2019-02-12 13:51:43 +01:00 committed by Florian Weimer
parent 3b856d093f
commit b3fbfe8196
4 changed files with 138 additions and 2 deletions
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10
ChangeLog
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@ -1,3 +1,13 @@
2019-02-12 Adhemerval Zanella <adhemerval.zanella@linaro.org>
[BZ #24122]
* elf/Makefile (tests): Add tst-audit13.
(modules-names): Add tst-audit13mod1.
(tst-audit13.out, LDFLAGS-tst-audit13mod1.so, tst-audit13-ENV): New
rule.
* elf/tst-audit13.c: New file.
* elf/tst-audit13mod1.c: Likewise.
2019-02-12 Florian Weimer <fweimer@redhat.com>
[BZ #24122]

9
elf/Makefile
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@ -187,7 +187,7 @@ tests += restest1 preloadtest loadfail multiload origtest resolvfail \
tst-nodelete2 tst-audit11 tst-audit12 tst-dlsym-error tst-noload \
tst-latepthread tst-tls-manydynamic tst-nodelete-dlclose \
tst-debug1 tst-main1 tst-absolute-sym tst-absolute-zero tst-big-note \
tst-unwind-ctor tst-unwind-main
tst-unwind-ctor tst-unwind-main tst-audit13
# reldep9
tests-internal += loadtest unload unload2 circleload1 \
neededtest neededtest2 neededtest3 neededtest4 \
@ -275,7 +275,8 @@ modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
tst-latepthreadmod $(tst-tls-many-dynamic-modules) \
tst-nodelete-dlclose-dso tst-nodelete-dlclose-plugin \
tst-main1mod tst-libc_dlvsym-dso tst-absolute-sym-lib \
tst-absolute-zero-lib tst-big-note-lib tst-unwind-ctor-lib
tst-absolute-zero-lib tst-big-note-lib tst-unwind-ctor-lib \
tst-audit13mod1
# Most modules build with _ISOMAC defined, but those filtered out
# depend on internal headers.
modules-names-tests = $(filter-out ifuncmod% tst-libc_dlvsym-dso tst-tlsmod%,\
@ -1392,6 +1393,10 @@ tst-audit12-ENV = LD_AUDIT=$(objpfx)tst-auditmod12.so
$(objpfx)tst-audit12mod1.so: $(objpfx)tst-audit12mod2.so
LDFLAGS-tst-audit12mod2.so = -Wl,--version-script=tst-audit12mod2.map
$(objpfx)tst-audit13.out: $(objpfx)tst-audit13mod1.so
LDFLAGS-tst-audit13mod1.so = -Wl,-z,lazy
tst-audit13-ENV = LD_AUDIT=$(objpfx)tst-audit13mod1.so
# Override -z defs, so that we can reference an undefined symbol.
# Force lazy binding for the same reason.
LDFLAGS-tst-latepthreadmod.so = \

28
elf/tst-audit13.c Normal file
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@ -0,0 +1,28 @@
/* Check for invalid audit version (BZ#24122).
Copyright (C) 2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <stdio.h>
static int
do_test (void)
{
puts ("plt call");
return 0;
}
#include <support/test-driver.c>

93
elf/tst-audit13mod1.c Normal file
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@ -0,0 +1,93 @@
/* Check for invalid audit version (BZ#24122).
Copyright (C) 2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <link.h>
#include <stdlib.h>
unsigned int
la_version (unsigned int version)
{
/* The audit specification says that a version of 0 or a version
greater than any version supported by the dynamic loader shall
cause the module to be ignored. */
return 0;
}
void
la_activity (uintptr_t *cookie, unsigned int flag)
{
exit (EXIT_FAILURE);
}
char *
la_objsearch (const char *name, uintptr_t *cookie, unsigned int flag)
{
exit (EXIT_FAILURE);
}
unsigned int
la_objopen (struct link_map *map, Lmid_t lmid, uintptr_t * cookie)
{
exit (EXIT_FAILURE);
}
void
la_preinit (uintptr_t * cookie)
{
exit (EXIT_FAILURE);
}
uintptr_t
#if __ELF_NATIVE_CLASS == 32
la_symbind32 (Elf32_Sym *sym, unsigned int ndx, uintptr_t *refcook,
uintptr_t *defcook, unsigned int *flags, const char *symname)
#else
la_symbind64 (Elf64_Sym *sym, unsigned int ndx, uintptr_t *refcook,
uintptr_t *defcook, unsigned int *flags, const char *symname)
#endif
{
exit (EXIT_FAILURE);
}
unsigned int
la_objclose (uintptr_t * cookie)
{
exit (EXIT_FAILURE);
}
#include <tst-audit.h>
#if (!defined (pltenter) || !defined (pltexit) || !defined (La_regs) \
|| !defined (La_retval) || !defined (int_retval))
# error "architecture specific code needed in sysdeps/CPU/tst-audit.h"
#endif
ElfW(Addr)
pltenter (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
uintptr_t *defcook, La_regs *regs, unsigned int *flags,
const char *symname, long int *framesizep)
{
exit (EXIT_FAILURE);
}
unsigned int
pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
uintptr_t *defcook, const La_regs *inregs, La_retval *outregs,
const char *symname)
{
exit (EXIT_FAILURE);
}