elf: Add more DT_RELR tests

Verify that:

1. A DT_RELR shared library without DT_NEEDED works.
2. A DT_RELR shared library without DT_VERNEED works.
3. A DT_RELR shared library without libc.so on DT_NEEDED works.
This commit is contained in:
H.J. Lu 2022-04-14 10:46:53 -07:00
parent 60196d2ef2
commit 4ada564f35
10 changed files with 286 additions and 3 deletions

View File

@ -545,7 +545,20 @@ endif
ifeq ($(have-dt-relr),yes)
tests += \
tst-relr \
tst-relr2 \
tst-relr3 \
tst-relr4 \
# tests
modules-names-dt-relr = \
tst-relr-mod2 \
tst-relr-mod3a \
tst-relr-mod3b \
tst-relr-mod4a \
tst-relr-mod4b \
# modules-names-dt-relr
modules-names += $(modules-names-dt-relr)
# These shared libraries have special build rules.
modules-names-nobuild += $(modules-names-dt-relr)
ifeq ($(have-fpie),yes)
tests += \
tst-relr-pie \
@ -560,6 +573,11 @@ endif
CFLAGS-tst-relr-pie.c += $(pie-ccflag)
LDFLAGS-tst-relr += -Wl,-z,pack-relative-relocs
LDFLAGS-tst-relr-pie += -Wl,-z,pack-relative-relocs
CFLAGS-tst-relr-mod2.c += $(no-stack-protector)
CFLAGS-tst-relr-mod3a.c += $(no-stack-protector)
CFLAGS-tst-relr-mod3b.c += $(no-stack-protector)
CFLAGS-tst-relr-mod4a.c += $(no-stack-protector)
CFLAGS-tst-relr-mod4b.c += $(no-stack-protector)
endif
endif
@ -637,7 +655,7 @@ test-extras += \
tst-tlsmod17a \
tst-tlsmod18a \
# test-extras
modules-names = \
modules-names += \
circlemod1 \
circlemod1a \
circlemod2 \
@ -1008,8 +1026,13 @@ extra-test-objs += $(addsuffix .os,$(strip $(modules-names)))
# filtmod1.so, tst-big-note-lib.so, tst-ro-dynamic-mod.so have special
# rules.
modules-names-nobuild := filtmod1 tst-big-note-lib tst-ro-dynamic-mod \
tst-audit24bmod1 tst-audit24bmod2
modules-names-nobuild += \
filtmod1 \
tst-audit24bmod1 \
tst-audit24bmod2 \
tst-big-note-lib \
tst-ro-dynamic-mod \
# modules-names-nobuild
tests += $(tests-static)
@ -2814,3 +2837,50 @@ $(objpfx)check-tst-relr-pie.out: $(objpfx)tst-relr-pie
| sed -ne '/required from libc.so/,$$ p' \
| grep GLIBC_ABI_DT_RELR > $@; \
$(evaluate-test)
# The test checks if a DT_RELR shared library without DT_NEEDED works as
# intended, so it uses an explicit link rule.
$(objpfx)tst-relr2: $(objpfx)tst-relr-mod2.so
$(objpfx)tst-relr-mod2.so: $(objpfx)tst-relr-mod2.os
$(LINK.o) -nostdlib -nostartfiles -Wl,-z,pack-relative-relocs \
$(LDFLAGS-soname-fname) \
-shared -o $@.new $(filter-out $(map-file),$^)
$(call after-link,$@.new)
mv -f $@.new $@
# The test checks if a DT_RELR shared library without DT_VERNEED works as
# intended, so it uses an explicit link rule.
$(objpfx)tst-relr3: $(objpfx)tst-relr-mod3a.so
$(objpfx)tst-relr-mod3b.so: $(objpfx)tst-relr-mod3b.os
$(LINK.o) -nostdlib -nostartfiles -Wl,-z,pack-relative-relocs \
$(LDFLAGS-soname-fname) \
-shared -o $@.new $(filter-out $(map-file),$^)
$(call after-link,$@.new)
mv -f $@.new $@
$(objpfx)tst-relr-mod3a.so: $(objpfx)tst-relr-mod3a.os \
$(objpfx)tst-relr-mod3b.so
$(LINK.o) -nostdlib -nostartfiles -Wl,-z,pack-relative-relocs \
$(LDFLAGS-soname-fname) \
-shared -o $@.new $(filter-out $(map-file),$^)
$(call after-link,$@.new)
mv -f $@.new $@
# The test checks if a DT_RELR shared library without libc.so on DT_NEEDED
# works as intended, so it uses an explicit link rule.
$(objpfx)tst-relr4: $(objpfx)tst-relr-mod4a.so
$(objpfx)tst-relr-mod4b.so: $(objpfx)tst-relr-mod4b.os
$(LINK.o) -nostdlib -nostartfiles -Wl,-z,pack-relative-relocs \
$(LDFLAGS-soname-fname) \
-Wl,--version-script=tst-relr-mod4b.map \
-shared -o $@.new $(filter-out $(map-file),$^)
$(call after-link,$@.new)
mv -f $@.new $@
$(objpfx)tst-relr-mod4a.so: $(objpfx)tst-relr-mod4a.os \
$(objpfx)tst-relr-mod4b.so
$(LINK.o) -nostdlib -nostartfiles -Wl,-z,pack-relative-relocs \
$(LDFLAGS-soname-fname) \
-shared -o $@.new $(filter-out $(map-file),$^)
$(call after-link,$@.new)
mv -f $@.new $@

46
elf/tst-relr-mod2.c Normal file
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@ -0,0 +1,46 @@
/* Test for DT_RELR in a shared library without DT_NEEDED.
Copyright (C) 2022 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
<https://www.gnu.org/licenses/>. */
#include <array_length.h>
static int o, x;
#define ELEMS O O O O O O O O X X X X X X X O O X O O X X X E X E E O X O E
#define E 0,
#define O &o,
#define X &x,
void *arr[] = { ELEMS };
#undef O
#undef X
#define O 1,
#define X 2,
static char val[] = { ELEMS };
int
foo (void)
{
int err = 0;
for (int i = 0; i < array_length (arr); i++)
if (!((arr[i] == 0 && val[i] == 0)
|| (arr[i] == &o && val[i] == 1)
|| (arr[i] == &x && val[i] == 2)))
err++;
return err;
}

49
elf/tst-relr-mod3a.c Normal file
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@ -0,0 +1,49 @@
/* Test for DT_RELR in a shared library without DT_VERNEED.
Copyright (C) 2022 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
<https://www.gnu.org/licenses/>. */
#include <array_length.h>
static int o, x;
#define ELEMS O O O O O O O O X X X X X X X O O X O O X X X E X E E O X O E
#define E 0,
#define O &o,
#define X &x,
void *arr[] = { ELEMS };
#undef O
#undef X
#define O 1,
#define X 2,
static char val[] = { ELEMS };
extern void bar (void);
int
foo (void)
{
int err = 0;
for (int i = 0; i < array_length (arr); i++)
if (!((arr[i] == 0 && val[i] == 0)
|| (arr[i] == &o && val[i] == 1)
|| (arr[i] == &x && val[i] == 2)))
err++;
bar ();
return err;
}

22
elf/tst-relr-mod3b.c Normal file
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@ -0,0 +1,22 @@
/* Test for DT_RELR in a shared library without DT_VERNEED.
Copyright (C) 2022 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
<https://www.gnu.org/licenses/>. */
void
bar (void)
{
}

19
elf/tst-relr-mod4a.c Normal file
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@ -0,0 +1,19 @@
/* Test for DT_RELR in a shared library without libc.so on DT_NEEDED.
Copyright (C) 2022 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
<https://www.gnu.org/licenses/>. */
#include "tst-relr-mod3a.c"

19
elf/tst-relr-mod4b.c Normal file
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@ -0,0 +1,19 @@
/* Test for DT_RELR in a shared library without libc.so on DT_NEEDED.
Copyright (C) 2022 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
<https://www.gnu.org/licenses/>. */
#include "tst-relr-mod3b.c"

3
elf/tst-relr-mod4b.map Normal file
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@ -0,0 +1,3 @@
DT_RELR {
global: bar;
};

27
elf/tst-relr2.c Normal file
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@ -0,0 +1,27 @@
/* Test for DT_RELR in a shared library without DT_NEEDED.
Copyright (C) 2022 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
<https://www.gnu.org/licenses/>. */
extern int foo (void);
static int
do_test (void)
{
return foo ();
}
#include <support/test-driver.c>

27
elf/tst-relr3.c Normal file
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@ -0,0 +1,27 @@
/* Test for DT_RELR in a shared library without libc.so on DT_NEEDED.
Copyright (C) 2022 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
<https://www.gnu.org/licenses/>. */
extern int foo (void);
static int
do_test (void)
{
return foo ();
}
#include <support/test-driver.c>

1
elf/tst-relr4.c Normal file
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@ -0,0 +1 @@
#include "tst-relr3.c"