127 lines
4.5 KiB
Diff
127 lines
4.5 KiB
Diff
commit 3908fa933a4354309225af616d9242f595e11ccf
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Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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Date: Wed Jun 30 00:21:18 2021 -0300
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elf: Fix audit regression
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Commit 03e187a41d9 added a regression when an audit module does not have
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libc as DT_NEEDED (although unusual it is possible).
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Checked on x86_64-linux-gnu.
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Conflicts:
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elf/Makefile
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diff --git a/elf/Makefile b/elf/Makefile
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index 30417c3ce15abcb4..6262a4a65cfd2148 100644
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--- a/elf/Makefile
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+++ b/elf/Makefile
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@@ -218,6 +218,7 @@ tests += restest1 preloadtest loadfail multiload origtest resolvfail \
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tst-rtld-run-static \
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tst-dlmopen-dlerror \
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tst-dlmopen-gethostbyname \
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+ tst-audit17 \
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# reldep9
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tests-internal += loadtest unload unload2 circleload1 \
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neededtest neededtest2 neededtest3 neededtest4 \
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@@ -1527,6 +1528,16 @@ $(objpfx)tst-auditlogmod-3.so: $(libsupport)
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$(objpfx)tst-audit16.out: \
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$(objpfx)tst-auditlogmod-1.so $(objpfx)tst-auditlogmod-2.so \
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$(objpfx)tst-auditlogmod-3.so
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+$(objpfx)tst-audit17.out: $(objpfx)tst-auditmod17.so
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+# The test check if a audit library without libc.so on DT_NEEDED works as
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+# intended, so it uses an explicit link rule.
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+$(objpfx)tst-auditmod17.so: $(objpfx)tst-auditmod17.os
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+ $(CC) -nostdlib -nostartfiles -shared -o $@.new \
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+ $(filter-out $(map-file),$^)
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+ $(call after-link,$@.new)
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+ mv -f $@.new $@
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+CFLAGS-.os += $(call elide-stack-protector,.os,tst-auditmod17)
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+tst-audit17-ENV = LD_AUDIT=$(objpfx)tst-auditmod17.so
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# tst-sonamemove links against an older implementation of the library.
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LDFLAGS-tst-sonamemove-linkmod1.so = \
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diff --git a/elf/dl-open.c b/elf/dl-open.c
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index 736df62ce6e46d34..661a2172d1789b26 100644
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--- a/elf/dl-open.c
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+++ b/elf/dl-open.c
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@@ -759,16 +759,9 @@ dl_open_worker_begin (void *a)
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namespace. */
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if (!args->libc_already_loaded)
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{
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+ /* dlopen cannot be used to load an initial libc by design. */
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struct link_map *libc_map = GL(dl_ns)[args->nsid].libc_map;
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-#ifdef SHARED
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- bool initial = libc_map->l_ns == LM_ID_BASE;
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-#else
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- /* In the static case, there is only one namespace, but it
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- contains a secondary libc (the primary libc is statically
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- linked). */
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- bool initial = false;
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-#endif
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- _dl_call_libc_early_init (libc_map, initial);
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+ _dl_call_libc_early_init (libc_map, false);
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}
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#ifndef SHARED
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diff --git a/elf/tst-audit17.c b/elf/tst-audit17.c
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new file mode 100644
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index 0000000000000000..92986699d497845f
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--- /dev/null
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+++ b/elf/tst-audit17.c
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@@ -0,0 +1,25 @@
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+/* Check DT_AUDIT with audit not linked against libc.
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+ Copyright (C) 2021 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, see
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+ <https://www.gnu.org/licenses/>. */
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+
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+static int
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+do_test (void)
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+{
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+ return 0;
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+}
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+
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+#include <support/test-driver.c>
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diff --git a/elf/tst-auditmod17.c b/elf/tst-auditmod17.c
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new file mode 100644
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index 0000000000000000..7a4467f597b56cf4
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--- /dev/null
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+++ b/elf/tst-auditmod17.c
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@@ -0,0 +1,23 @@
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+/* Check DT_AUDIT with audit not linked against libc.
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+ Copyright (C) 2021 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, see
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+ <https://www.gnu.org/licenses/>. */
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+
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+unsigned int
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+la_version (unsigned int version)
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+{
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+ return version;
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+}
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